With Plural Alignments On The Same Substrate Patents (Class 349/129)
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Patent number: 8054425Abstract: An alignment-treating method including a first irradiation step of conducting an alignment-treating for realizing an alignment of liquid crystals in a predetermined azimuth direction on a alignment layer of a substrate by obliquely irradiating the substrate with ultraviolet rays, and a second irradiation step of conducting an alignment-treating for realizing an alignment of liquid crystals in an azimuth direction different from the predetermined azimuth direction by obliquely irradiating a region of the substrate where ultraviolet ray irradiation has not been conducted in the first irradiation step with ultraviolet rays in an azimuth direction 180° different from an azimuth direction of ultraviolet ray irradiation in the first irradiation step.Type: GrantFiled: September 3, 2010Date of Patent: November 8, 2011Assignee: Sharp Kabushiki KaishaInventors: Hidefumi Yoshida, Tsutomu Seino, Yasutoshi Tasaka
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Patent number: 8049852Abstract: The present invention relates to a method of manufacturing a liquid crystal display, the method including; disposing a thin film transistor having an input terminal and an output terminal on a first substrate, connecting a pixel electrode to the output terminal, disposing an organic layer on the pixel electrode, forming a first alignment layer having at least two different alignment directions by disposing a mask on the organic layer and radiating an ion beam to the organic layer, disposing a common electrode on a second substrate corresponding to the first substrate, forming a second alignment layer having at least two different alignment directions on the common electrode, and disposing a liquid crystal layer between the first alignment layer and the second alignment layer.Type: GrantFiled: April 9, 2009Date of Patent: November 1, 2011Assignees: Samsung Electronics Co., Ltd., Pusan National UniversityInventors: Soon-Joon Rho, Jang-Sub Kim, Baek-Kyun Jeon, Hee-Keun Lee, Jae-Chang Kim, Tae-Hoon Yoon, Phil-Kook Son, Bong-Kyun Jo
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Patent number: 8049851Abstract: A liquid crystal dripping method has a problem in that an uncured sealant increases in width at the time of attaching a pair of substrates and thus a liquid crystal material enters the sealant and unevenness occurs in the inner periphery of the sealant. A region in which reduced is the speed of diffusion of liquid crystal at the time of attaching a pair of substrates is provided between a sealant and an orientation film. Further, time for diffusing the liquid crystal and coming in contact with the sealant is made long. Accordingly, the sealant is subjected to photo-curing before the liquid crystal comes in contact with the sealant. The region in which reduced is the speed of diffusion of the liquid crystal is formed using a material for forming a vertical orientation film, a silane coupling agent, a substance having a photocatalytic function, or the like.Type: GrantFiled: June 20, 2008Date of Patent: November 1, 2011Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Masahide Kanai, Takeshi Nishi, Daisuke Kubota, Tetsuji Ishitani
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Patent number: 8045112Abstract: A display device includes: a first panel having a pixel region including a pixel electrode therein; a second panel having a common electrode facing the first panel; a liquid crystal layer having vertically aligned liquid crystal molecules interposed between the first and second panels; a first alignment layer disposed on the pixel electrode; and a second alignment layer disposed on the common electrode. At least one of the pixel electrode and the common electrode has a micro slit pattern. At least one of the first and second alignment layers divides the pixel region into domains, is formed to have pretilt directions corresponding to a given domain, and pretilts the vertically aligned liquid crystal molecules in the given domain. A direction of summed horizontal components of a fringe field at an edge of the pixel region is substantially equal to a direction of summed horizontal components of a pretilt direction of the at least one of the first and second alignment layer.Type: GrantFiled: June 27, 2008Date of Patent: October 25, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Jun-woo Lee, Hwa-sung Woo, Baek-kyun Jeon, Ji-won Sohn, In-suk Lee, Kyoung-tae Kim
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Patent number: 8045113Abstract: A thin film transistor (TFT) substrate including a base, a plurality of scan lines and data lines and a pixel unit is provided. The scan lines are disposed on the base. The data lines are disposed above the scan lines and are perpendicular to the scan lines to define a plurality of pixel areas. The pixel unit is disposed on the base and inside one of the pixel areas. The pixel unit comprises a TFT and a pixel electrode. The TFT comprises a source and a drain. The pixel electrode is electrically connected to the drain. The pixel electrode comprises a first main electrode, a second main electrode and a plurality of branch electrodes. The first main electrode is perpendicular to the second main electrode. The branch electrodes are connected to the first main electrode and/or the second main electrode. The first main electrode substantially divides the pixel area evenly.Type: GrantFiled: December 8, 2009Date of Patent: October 25, 2011Assignee: AU Optronics Corp.Inventors: Ya-Chieh Chen, Te-Wei Chan, Hsiang-Pin Fan
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Patent number: 8045076Abstract: An active matrix substrate includes a transistor, a pixel electrode connected with one of the current-flowing electrodes of the transistor, a storage capacitor wiring, a lead wiring extending from one of the current-flowing electrodes of the transistor, and a repair wiring extending from the storage capacitor wiring. The repair wiring overlaps a portion of the lead wiring with an insulating layer interposed therebetween. As a result, TFT defects (for example, a short circuit between a source electrode and a drain electrode) can be repaired, and performance of fast display and reduction in electric power consumption can be realized.Type: GrantFiled: September 30, 2009Date of Patent: October 25, 2011Assignee: Sharp Kabushiki KaishaInventors: Toshihide Tsubata, Yoshihiro Okada, Atsushi Ban, Toshinori Sugihara
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Patent number: 8045131Abstract: The present invention provides a transparent liquid crystal display device which is less in display characteristics and viewing angle dependency and can provide bright images and high contrasts. The transparent liquid crystal display device comprises at least: a backlight; a polarizer; a second optical anisotropic layer with a retardation of 50 to 180 nm at a wavelength of 550 nm; a first optical anisotropic layer with a retardation of 20 to 140 nm at a wavelength of 550 nm; a homogeneously aligned liquid crystal cell comprising upper and lower substrates facing each other and a liquid crystal layer sandwiched between the upper and lower substrates; a third optical anisotropic layer with a retardation of 50 to 200 nm at a wavelength of 550 nm; and a polarizer, arranged in piles in this order from the backlight, wherein the first optical anisotropic layer comprising at least a liquid crystal film with a fixed nematic hybrid liquid crystal alignment structure.Type: GrantFiled: October 30, 2007Date of Patent: October 25, 2011Assignee: Nippon Oil CorporationInventors: Tetsuya Uesaka, Satoru Ikeda
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Patent number: 8045114Abstract: A liquid crystal display device includes: a first substrate and a second substrate; a gate line and a data line on the first substrate that cross each other to define a pixel region; a pixel electrode in the pixel region; a thin film transistor at the crossing of the gate and data lines, and connected to the pixel electrode; at least one first electric field distortion unit in the pixel electrode to control a liquid crystal director by electric field distortion; a second electric field distortion unit between the pixel electrode and the first substrate; and a layer of liquid crystal molecules between the first and second substrates.Type: GrantFiled: August 17, 2010Date of Patent: October 25, 2011Assignee: LG Display Co., Ltd.Inventors: Ji Young Ahn, Hyeon Ho Son
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Patent number: 8045117Abstract: A display element has an arrangement that allows the pixel to have at least two domains in which the medium shows optical anisotropies of different directions when a force (for example, an electric field) is applied or when no force is applied. It is preferable that directions of the optical anisotropies occurred in the respective domains when the electric field is applied respectively have 45 degrees±10 degrees with absorption axes of polarizers, and that the directions of the optical anisotropies occurred in the respective domains when the electric field is applied make 90 degrees±20 degrees.Type: GrantFiled: September 22, 2009Date of Patent: October 25, 2011Assignee: Sharp Kabushiki KaishaInventors: Koichi Miyachi, Seiji Shibahara, Iichiro Inoue, Shoichi Ishihara, Takako Koide
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Patent number: 8045079Abstract: A display device which includes a substrate, a gate line formed on the substrate, a data line intersecting the gate line, and a thin film transistor having a gate electrode connected to the gate line, a source electrode which overlaps the gate electrode and is connected to the data line, and a drain electrode which overlaps the gate electrode. The overlapping area between the gate electrode and the drain electrode is larger than the overlapping area between the gate electrode and the source electrode.Type: GrantFiled: August 26, 2008Date of Patent: October 25, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Kwang-Chul Jung, Mee-Hye Jung, Joon-Chul Goh, Chong-Chul Chai
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Patent number: 8045110Abstract: Provided are an LCD capable of improving an image quality and an aperture ratio by uniform alignment of liquid crystal, and a method for fabricating the LCD. A first ion beam is irradiated onto an alignment layer formed on a substrate in a first direction, and a second ion beam is irradiated onto the alignment layer in a second direction that is symmetrical or asymmetrical to the first direction with respect to a line perpendicular to the substrate. Accordingly, the entire surface of the alignment layer can be uniformly aligned. Consequently, light leakage can be prevented and thus an image quality can be enhanced. Also, a black matrix margin can be reduced and an aperture ratio can be enhanced.Type: GrantFiled: October 11, 2005Date of Patent: October 25, 2011Assignee: LG Display Co., Ltd.Inventor: Yong Sung Ham
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Patent number: 8040472Abstract: A multi-domain vertical alignment liquid crystal display that does not require physical features on the substrate (such as protrusions and ITO slits) is disclosed. Each pixel of the MVALCD is subdivided into color components, which are further divided into color dots. The polarity of the color dots are arranged so that fringe fields from adjacent color dots causes multiple liquid crystal domains in each color dot. Specifically, the color dots of a pixel are arranged so that each color dot of a first polarity has four neighboring pixels of a second polarity. Thus, a checkerboard pattern of polarities is formed. Furthermore, the checkerboard pattern is extended across multiple pixels in the MVALCD. In addition, many display unit include multiple pixel designs to improve color distribution or electrical distribution.Type: GrantFiled: June 25, 2009Date of Patent: October 18, 2011Assignee: Hiap L. Ong and Kyoritsu Optronics, Co., Ltd.Inventor: Hiap L. Ong
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Patent number: 8040479Abstract: A gate line extending in a transverse direction and a data line intersecting the gate line are formed on the substrate. The data line includes a curved portion and an intermediate portion crossing the gate line substantially at a right angle. A pixel electrode is formed on an insulating layer. The pixel electrode is connected to a thin film transistor and it has an edge extending substantially parallel to the curved portion of the data line.Type: GrantFiled: August 4, 2009Date of Patent: October 18, 2011Assignee: Samsung Electronics Co., Ltd.Inventor: Jang-Kun Song
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Patent number: 8035785Abstract: The present invention relates generally to the field of electronics and may be used for making displays and, in particular, liquid crystal information displays, panels, cells e.t.c. The object of invention is to simplify the method for making liquid crystal devices by reducing the number of technological operations and consequently to reduce the cost of liquid crystal display without sacrificing the quality (wide viewing angle). To achieve this the electric field applied to the liquid crystal in such display has the non-uniform component parallel to the plane of the substrates, which leads to the non-uniform reorientation of the aforementioned liquid crystal in the space between the aforementioned electrodes within the pixel area and hence improves optical properties of this display in various directions of observation.Type: GrantFiled: September 23, 2010Date of Patent: October 11, 2011Assignee: LG Display Co., Ltd.Inventors: Sergey E Yakovenko, Anatoly A Minko, Victor A Konovalov, Anatoly A Muravsky
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Patent number: 8035784Abstract: A semi-transmissive liquid crystal display device is formed by sealing liquid crystal of negative dielectric anisotropy between a TFT substrate and a counter substrate, and has a transmission region controlling transmitted light and a reflection region controlling reflected light. Moreover, a reflecting electrode and a transparent electrode on the TFT substrate are covered with a first vertical orientation film, and a common electrode on the counter substrate is covered with a second vertical orientation film. Only the entire second vertical orientation film and the first vertical orientation film in the transmission region are modified by light, a pretilt angle of liquid crystal molecules on an interface between the first and second vertical orientation films is 45° or more, and the liquid crystal molecules in the transmission region are subjected to bend orientation.Type: GrantFiled: January 28, 2005Date of Patent: October 11, 2011Assignee: Sharp Kabushiki KaishaInventors: Kunihiro Tashiro, Yasutoshi Tasaka, Hidefumi Yoshida
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Publication number: 20110242468Abstract: A liquid crystal display panel, including: a pixel electrode formed on a first substrate; an alignment layer formed on the pixel electrode, wherein the alignment layer includes an alignment layer material and aligns first liquid crystal molecules in a direction substantially perpendicular to the pixel electrode; and a photo hardening layer formed on the alignment layer, wherein the photo hardening layer includes a photo hardening layer material and aligns second liquid crystal molecules to be tilted with respect to the pixel electrode, wherein the alignment layer material and the photo hardening layer material have different polarities from each other.Type: ApplicationFiled: February 1, 2011Publication date: October 6, 2011Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Kyong-Sik Choi, Myung-Jae Park, Min-Wook Park, Sung-Hoon Kim, Gak-Seok Lee, Woo-Jung Shin, Jun-Hyup Lee, Keun-Chan Oh, Sang-Gyun Kim, Su-Jeong Kim, Seung-Beom Park, Youn-Hak Jeong
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Patent number: 8031286Abstract: A liquid crystal display includes a first insulating substrate, and a second insulating substrate facing the first insulating substrate. Gate lines are formed on the first insulating substrate while extending in a horizontal direction. A gate insulating layer is formed on the gate lines. A semiconductor layer and data lines are formed on the gate insulating layer. The data lines extend in a vertical direction. Source electrodes are formed on the semiconductor layer while being connected to the data lines. Drain electrodes face the source electrodes. A protective layer is formed on the data lines, and pixel electrodes are formed on the protective layer such that the pixel electrodes are connected to the drain electrodes while having a plurality of slits and horizontal opening portions. A common electrode is formed on the second insulating substrate with a plurality of opening portions.Type: GrantFiled: August 2, 2007Date of Patent: October 4, 2011Assignee: Samsung Electronics Co., Ltd.Inventor: Jang-Kun Song
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Patent number: 8031273Abstract: A first transparent electrode film, which is a component of a SW-LCD for viewing angle control, is used as a touch panel. When a contacting object contacts the surface of the first transparent electrode film, a position detector detects currents flowing from plural parts of the first transparent electrode film so as to detect the contacting position of the contacting object, with reference to the detection result. With this, it is possible to provide a built-in touch sensor display device which is thin, lightweight, and low-cost, a viewing angle control device, and an electronic device.Type: GrantFiled: September 12, 2005Date of Patent: October 4, 2011Assignee: Sharp Kabushiki KaishaInventors: Koji Yabuta, Hiroshi Fukushima, Tomoo Takatani, Akira Imai
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Patent number: 8023085Abstract: A liquid crystal display apparatus including a pair of substrates having electrodes and vertical alignment layers. A liquid crystal having a negative anisotropy of dielectric is inserted between the substrates. Each substrate has linearly arranged alignment control structures for controlling the alignment of the liquid crystal. The alignment control structures are formed in the form of projections or slits. Each alignment control structure is formed of a plurality of constituent units. In addition, means for forming a boundary of alignment of liquid crystal (singular point in director field) to control the liquid crystal located on the alignment control structures.Type: GrantFiled: July 21, 2010Date of Patent: September 20, 2011Assignee: Sharp Kabushiki KaishaInventors: Takahiro Sasaki, Arihiro Takeda, Katsufumi Ohmuro, Hideo Chida, Yoshio Koike, Kimiaki Nakamura, Kunihiro Tashiro
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Patent number: 8018546Abstract: The present invention provides a display device which can display characters clearly and display images smoothly. An area gray scale method is adopted and a configuration of one pixel is changed depending on a mode, by selecting one or more display regions in each pixel. When characters are needed to be displayed clearly, one pixel is configured by selecting a stripe arrangement. Thus, clear display can be conducted. When images are needed to be displayed, one pixel is configured by selecting an indented state. Thus, smooth display can be conducted.Type: GrantFiled: February 23, 2011Date of Patent: September 13, 2011Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Hajime Kimura, Shunpei Yamazaki
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Patent number: 8018561Abstract: Electrode slit portions are formed in a pixel electrode in a direction of crossing a slit for dividing a liquid crystal layer into a plurality of domains. A titanium oxide film is formed so as to be exposed to the liquid crystal layer side via the electrode slit portions, the titanium oxide film having a relative dielectric constant higher than that of an organic film formed at positions corresponding to the electrode slit portions. By the titanium oxide film, an electric field of each domain is set, angles between the director in the vicinity of the electrode slit portion and transmission axes of polarizing plates are made to approximately 45°, and a decrease in transmittance caused by the falling direction of the director can be suppressed. The transmittance and contrast ratio are secured, and simultaneously an excellent wide viewing angle range can be obtained.Type: GrantFiled: January 6, 2009Date of Patent: September 13, 2011Assignee: Toshiba Matsushita Display Technology Co., Ltd.Inventors: Masaki Obi, Azusa Ikeda, Hideki Ito, Yasushi Kawata, Akio Murayama
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Patent number: 8018559Abstract: A liquid crystal display apparatus having a plurality of pixels, including: a pair of substrates; a liquid crystal having a negative dielectric anisotropy inserted between the pair of substrates; and first and second electrodes formed on the pair of substrates, respectively. A first alignment control structure is formed linearly on one of the pair of substrates for controlling an alignment of the liquid crystal and a second alignment control structure is formed linearly on the other of the pair of substrates for controlling an alignment of the liquid crystal. The first and second alignment control structures are bent in zigzag fashion and extend parallel with each other. The liquid crystal display apparatus also includes an additional structure for controlling an alignment of the liquid crystal. The additional structure extends from a bent portion of at least one of the first and second alignment control structures.Type: GrantFiled: July 31, 2009Date of Patent: September 13, 2011Assignee: Sharp Kabushiki KaishaInventors: Takahiro Sasaki, Arihiro Takeda, Katsufumi Ohmuro, Hideo Chida, Yoshio Koike, Kimiaki Nakamura, Kunihiro Tashiro
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Pixels having polarity extension regions for multi-domain vertical alignment liquid crystal displays
Patent number: 8018537Abstract: A multi-domain vertical alignment liquid crystal display that does not require physical features on the substrate (such as protrusions and ITO slits) is disclosed. Each pixel of the MVA LCD is subdivided into color components, which are further divided into color dots. The color components include polarized extension regions that extend between color dots of neighboring color components (and neighboring pixels). The voltage polarity of the color dots and polarized extension regions are arranged so that fringe fields in each color dot causes multiple liquid crystal domains in each color dot. Specifically, the color dots and polarity extension regions of the display are arranged so that neighboring polarized elements have opposite polarities.Type: GrantFiled: January 23, 2008Date of Patent: September 13, 2011Assignees: Kyoritsu Optronics Co., Ltd.Inventor: Hiap L. Ong -
Patent number: 8013966Abstract: A display panel is provided. The display panel includes a substrate and a pixel electrode disposed on the substrate and having a pair of first primary edges facing each other and a pair of second primary edges connected to the first primary edges and facing each other, wherein the second primary edges include a plurality of protrusions of the pixel electrode having the shape of sawteeth.Type: GrantFiled: December 3, 2009Date of Patent: September 6, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Hee-Wook Do, Yeon-Ju Kim, Yoon-Sung Um, Hak-Sun Chang, Seung-Hoo Yoo, Hyun-Wuk Kim, Jae-Jin Lyu, Chang-Hun Lee
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Patent number: 8013967Abstract: Two electrodes parallel to each other are formed on one of two substrates, homeotropic alignment films are formed on the substrates and a liquid crystal material having positive dielectric anisotropy is injected between the substrates. When a voltage is applied to the two electrodes, a parabolic electric field between the electrodes drives the liquid crystal molecules. Since the generated electric field is symmetrical with respect to the boundary-plane equal distance from each of the two electrodes, the liquid crystal molecules are symmetrically aligned with respect to the boundary-plane, and the optical characteristic is compensated in both regions divided by the boundary-plane, thereby obtaining a wide viewing angle. The electric field does not exert influences on the liquid crystal molecules on the boundary-plane since the electric field on the boundary-plane is parallel to the substrates and perpendicular to the two electrodes; and thus, it is perpendicular to the liquid crystal molecules.Type: GrantFiled: June 18, 2010Date of Patent: September 6, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Kyeong-Hyeon Kim, Jung-Uk Shim, Seung-Beom Park, Jang-Kun Song
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Patent number: 8004639Abstract: An LCD panel includes a first substrate, a second substrate, alignment protrusions and a liquid crystal layer between the first substrate and the second substrate. The first substrate includes pixel units arranged in an array. Each of the pixel units has at least one reflection area and one transmittance area. The first substrate has concaves in the reflection areas. The second substrate is above the first substrate. The first substrate or the second substrate has at least one padding layer in the reflection area. The alignment protrusions having approximately the same height are disposed on the second substrate and located in centers of each of the reflections and the transmittance areas. In the reflection area, a group of the alignment protrusions are in the concaves to keep a gap from the first substrate. The other group of the alignment protrusions outside of the concaves contact with the first substrate directly.Type: GrantFiled: December 23, 2010Date of Patent: August 23, 2011Assignee: Au Optronics CorporationInventors: Shih-Chyuan Fan Jiang, Ching-Huan Lin, Chih-Ming Chang
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Patent number: 8004738Abstract: An electro-wetting display panel including an active device array substrate, a dielectric layer, a wall structure, a first liquid containing dyes, a second liquid, and an opposite substrate is provided. The active device array substrate includes a substrate, scan lines, data lines, and pixels. The pixels are electrically connected with the scan lines and the data lines accordingly. Each pixel includes an active device, a transparent pixel electrode, and a reflective layer. The transparent pixel electrode located above the reflective layer is electrically connected with the active device. The reflective layer has a bumpy surface. The dielectric layer is disposed on the active device array substrate. The wall structure is disposed on the dielectric layer. The first liquid is disposed on the dielectric layer. The opposite substrate is disposed above the active device array substrate. The second liquid is disposed between the active device array substrate and the opposite substrate.Type: GrantFiled: February 10, 2010Date of Patent: August 23, 2011Assignee: Au Optronics CorporationInventors: Syuan-Ling Yang, Yi-Hsueh Lin, Shih-Chyuan Fan-Jiang, Chih-Hung Shih
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Patent number: 7999879Abstract: A liquid crystal display device is provided which has a pair of substrates and a liquid crystal layer sandwiched between the pair of substrates, in which liquid crystal molecules are vertically aligned with respect to the substrates when no voltage is applied between the substrates and the liquid crystal molecules tilt in a plurality of directions to be almost parallel to the substrates by applying a voltage between the substrates. In the liquid crystal layer, when the voltage is applied, a proportion of a region where the liquid crystal molecules tilt in a direction of 0 degrees to 180 degrees is different from a proportion of a region where the liquid crystal molecules tilt in a direction of 180 degrees to 360 degrees with the angle being defined counterclockwise with the right direction on a screen being 0 degrees.Type: GrantFiled: March 12, 2007Date of Patent: August 16, 2011Assignee: Sharp Kabushiki KaishaInventors: Hidefumi Yoshida, Takashi Sasabayashi, Arihiro Takeda, Yasutoshi Tasaka, Hideo Chida, Yoshio Koike
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Patent number: 7995170Abstract: In a liquid crystal display apparatus in which a liquid crystal domain having radially tilted orientation is formed in a pixel, high-quality reflection display with occurrence of an afterimage being suppressed is attained. The liquid crystal display apparatus of this invention includes a first substrate 110a, a second substrate 110b and a vertically aligned liquid crystal layer 120 placed therebetween, and has pixels each including a first electrode 111, a second electrode 131 and a liquid crystal layer located therebetween. The first substrate includes a reflection layer 116 having a concave/convex surface and an insulating layer 117 formed to cover the reflection layer. The first electrode 111 is placed on the insulating layer 117 and has a shape defined to exert alignment regulating force with which at least one liquid crystal domain having radially tilted orientation is formed in the liquid crystal layer in a voltage applied state.Type: GrantFiled: March 20, 2006Date of Patent: August 9, 2011Assignee: Sharp Kabushiki KaishaInventors: Noriaki Onishi, Kazuhiko Tamai, Takaaki Okamoto, Nobukazu Nagae
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Patent number: 7995176Abstract: The liquid crystal display device according to this invention includes a control structure provided at each of or one of a liquid crystal side of a first substrate and a liquid crystal side of a second substrate to control a tilt direction of a liquid crystal upon application of a voltage to a liquid crystal layer, a first domain where a liquid crystal tilts in one direction upon application of a voltage to a liquid crystal layer, and a second domain where a liquid crystal tilts in a direction different from the tilt direction of the liquid crystal in the first domain by substantially 180°. Herein, an angle formed by the tilt direction of the liquid crystal in the first domain and a horizontal direction of a screen in the liquid crystal display device falls within a range between 22° and 39° or a range between 51° and 68°.Type: GrantFiled: August 22, 2008Date of Patent: August 9, 2011Assignee: Mitsubishi Electric CorporationInventors: Takahiro Nishioka, Tetsuya Satake, Suguru Nagae
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Patent number: 7990503Abstract: A liquid crystal display device includes a pair of substrates; a liquid crystal sealed between the substrates; plural pixel regions each having a first pixel electrode formed on one of the pair of substrates and a second pixel electrode separated from the first pixel electrode; a TFT having a source electrode which is electrically connected to the first pixel electrode; a control capacitance portion which has a control capacitance electrode electrically connected to the source electrode and opposed to at least part of the second pixel electrode via an insulating film, and which thereby establishes capacitive coupling between the source electrode and the second pixel electrode; linear projections formed on the other substrate; and apertures formed in the first and second pixel electrodes so as to occupy parts of overlap regions of the linear projections and the first and second pixel electrodes as viewed perpendicularly to the substrate surfaces, for controlling the positions of singular points of alignment veType: GrantFiled: January 18, 2006Date of Patent: August 2, 2011Assignee: Sharp Kabushiki KaishaInventors: Yasutoshi Tasaka, Masakazu Shibasaki, Yohei Nakanishi, Hidefumi Yoshida, Tsuyoshi Kamada, Kazuya Ueda, Hideaki Tsuda
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Patent number: 7982836Abstract: A liquid crystal display device in which a pair of substrates having electrodes face each other, and liquid crystal is sealed between the substrates. The liquid crystal display device includes a insulating layer that varies electric field orientations in a pixel region when a voltage is applied between the pair of substrates.Type: GrantFiled: July 7, 2006Date of Patent: July 19, 2011Assignee: Sharp Kabushiki KaishaInventors: Arihiro Takeda, Yoshio Koike, Takashi Sasabayashi
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Patent number: 7978293Abstract: A liquid crystal display including an upper panel having an upper alignment layer, a lower panel having a lower alignment layer, and a liquid crystal layer including liquid crystal molecules interposed between the upper panel and the lower panel. Each of the liquid crystal molecules has different refractive indexes and different permittivities with respect to each axis direction. The upper alignment layer and the lower alignment layer are vertical alignment layers and have a rubbing direction, respectively. Before the application of an electric field, a first axis of each liquid crystal molecule is aligned in a vertical direction by the vertical alignment layer, and a second axis of each liquid crystal molecule is aligned in a direction parallel to the rubbing direction, and, after the application of the electric field, one having the largest permittivity of the axis directions of the liquid crystal molecule is aligned in parallel to the applied electric field.Type: GrantFiled: May 7, 2008Date of Patent: July 12, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Young-Chol Yang, Sung-Woon Kim, Jiangang Lu, Seung-Hoon Lee
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Patent number: 7978295Abstract: A vertically aligned system liquid crystal display in which deterioration in display quality such as graininess, burn-in, afterimages due to disorder in orientation of liquid crystal molecules based on a connection electrodes for interconnecting sub-pixel electrodes can be prevented, and a method for manufacturing such liquid crystal display. In the liquid crystal display, each pixel electrode (2) of a liquid crystal panel is constituted by combining at least two sub-pixel electrodes (2a), and each sub-pixel electrode (2a) is connected through a bridge (3) narrower than the sub-pixel electrode (2a). A vertically aligned system in which liquid crystal molecules tilt symmetrically to the central axis of orientation in the direction perpendicular to the surface of each sub-pixel electrode (2a) upon application of a voltage is employed. The bridge (3) is provided at a position asymmetric to the sub-pixel electrode (2a).Type: GrantFiled: June 21, 2006Date of Patent: July 12, 2011Assignee: Sharp Kabushiki KaishaInventors: Yasutoshi Tasaka, Mutsumi Nakajima, Masayuki Inoue, Keisuke Yoshida, Hirofumi Katsuse
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Patent number: 7978298Abstract: In a liquid crystal display device which presents display by forming liquid crystal domains that take radially-inclined orientation, persisting display unevenness is prevented from occurring when the panel surface is pressed, thus realizing high-quality displaying. A liquid crystal display device according to the present invention includes a first substrate, a second substrate provided so as to oppose the first substrate, and a vertical-alignment type liquid crystal layer provided therebetween. The liquid crystal display device according to the present invention further includes wall-like structures regularly arranged on the liquid crystal layer side of the first substrate, such that, when a predetermined voltage is applied, the liquid crystal layer forms at least one liquid crystal domain that takes a radially-inclined orientation state in a region substantially surrounded by the wall-like structures.Type: GrantFiled: February 20, 2007Date of Patent: July 12, 2011Assignee: Sharp Kabushiki KaishaInventors: Masaaki Saitoh, Toshihiro Matsumoto, Tsuyoshi Okazaki, Kazuyoshi Fujioka, Katsuya Ogawa, Tohru Sonoda
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Patent number: 7978290Abstract: A liquid crystal display device including first and second substrates, liquid crystal with negative dielectric anisotropy, a polymer which determines directions in which liquid crystal molecules tilt when voltage is applied, and a plurality of picture elements located on the first substrate. At least one of the picture elements includes a switching element, a first sub picture element electrode with a plurality of band-shaped microelectrode parts and a first connecting electrode part electrically connecting the microelectrode parts with one another, and a second sub picture element electrode including a plurality of band-shaped microelectrode parts and a second connecting electrode part electrically connecting the microelectrode parts of the second sub picture element electrode with one another. A voltage applied to the second sub picture element electrode is different from a voltage applied to the first sub picture element electrode.Type: GrantFiled: December 27, 2010Date of Patent: July 12, 2011Assignee: Sharp Kabushiki KaishaInventors: Yohei Nakanishi, Kunihiro Tashiro, Katsufumi Ohmuro, Kazutaka Hanaoka, Jin Hirosawa, Norio Sugiura, Kengo Kanii, Shota Makimoto, Naoto Kondo, Isao Tsushima, Tomonori Tanose, Takashi Takagi, Tetsuya Fujikawa
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Patent number: 7978296Abstract: The invention is directed to an improved flat panel liquid crystal display (LCD). In one embodiment the improved LCD includes a liquid crystal layer that completely fills a gap formed between a color filter array and a thin film transistor (TFT) array. The TFT array includes a substrate that includes one or more pixel areas. Each pixel area may be divided into at least two pixel sub-areas. Each pixel sub-area is configured to have a different electric field than its counterparts, such that mutual compensation in the sub-areas decreases distortion of a gamma curve and improves lateral visibility of the flat panel display. In one embodiment, a first pixel electrode is formed in a first of the at least two pixel sub-areas; and a second pixel electrode is formed in a second of the at least two pixel sub-areas.Type: GrantFiled: October 2, 2009Date of Patent: July 12, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Hee-Seop Kim, Jae-Jin Lyu, Doo-Hwan You
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Publication number: 20110164213Abstract: An alignment film (100) according to the present invention contains polyimide (102) and a polyvinyl compound (104), the polyvinyl compound (104) containing a polymerization product of a polyfunctional monomer having a plurality of vinyl groups. Preferably, each of the plurality of vinyl groups of the polyfunctional monomer is a part of a methacrylate group or an acrylate group. Preferably, the polyfunctional monomer has two or more directly-bonded ring structures or one or more condensed ring structures between the plurality of vinyl groups. Preferably, both of the polyimide (102) and the polyvinyl compound (104) are present on the surface and in the interior.Type: ApplicationFiled: August 28, 2009Publication date: July 7, 2011Inventors: Yohei Nakanishi, Masanobu Mizusaki
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Patent number: 7973899Abstract: A thin film transistor array panel according to one embodiment of the invention comprises: first, second, and third pixel electrodes arranged sequentially, the second pixel electrode including first and second sub-pixel electrodes, the second pixel electrode occupying an area comprising a first area and a second area that is disposed closer to the third pixel electrode than the first area; first, second, and third thin film transistors connected to the first, the second, and the third pixel electrodes, respectively; first, second, and third gate lines connected to the first, the second, and the third thin film transistors, respectively; and a data line connected to the first, the second, and the third thin film transistors, wherein the second sub-pixel electrode is capacitively coupled to the third pixel electrode, and the second sub-pixel electrode is present in both the first and the second areas.Type: GrantFiled: August 20, 2009Date of Patent: July 5, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Hyun-Wuk Kim, Jae-Jin Lyu, Yoon-Sung Um, Chang-Hun Lee
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Publication number: 20110157529Abstract: A liquid crystal display device includes a liquid crystal layer 1 whose state is switchable between a light-transmitting state and a light-scattering state, a front substrate 3 and a rear substrate 2 between which the liquid crystal layer 1 is held, a pair of electrodes 4, 8 between which the liquid crystal layer 1 is interposed and which are configured to apply a voltage across the liquid crystal layer 1, and first and second alignment films 13, 12 respectively provided between the liquid crystal layer 1 and the front substrate 3 and between the liquid crystal layer 1 and the rear substrate 2. The liquid crystal layer 1 includes, in each of the pixels, a continuous wall 10, a plurality of small sections 14 separated by the wall 10, and a plurality of liquid crystal regions 11, each of which is formed in any one of the plurality of small sections 14.Type: ApplicationFiled: August 21, 2009Publication date: June 30, 2011Inventors: Yasushi ASsaoka, Kiyoshi Minoura, Eiji Asaoka
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Patent number: 7969546Abstract: A liquid crystal display panel and a method of fabricating the same are provided. In the method, a first substrate is provided, and gates and scan lines are formed. An insulation layer covering the gates and the scan lines is formed, and a channel layer is formed on the insulation layer. A source and a drain are formed on each channel layer, and a data line electrically connected to each source is formed. A plurality of pixel electrodes are then formed, and a second substrate is provided. A plurality of pillar spacers are formed on the second substrate, and the first substrate and the second substrate are assembled. A liquid crystal layer then fills between the first substrate and the second substrate.Type: GrantFiled: May 26, 2009Date of Patent: June 28, 2011Assignee: Chunghwa Picture Tubes, Ltd.Inventors: Der-Chun Wu, De-Jiun Li, Hung-Hsiang Chiang
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Patent number: 7969535Abstract: A pixel unit having a display area is provided. The pixel unit includes a first substrate, a second substrate, a liquid crystal layer, and at least one ultraviolet light (UV) absorption pattern. The second substrate is disposed in parallel to the first substrate, and the liquid crystal layer is disposed between the first substrate and the second substrate. The UV absorption pattern is disposed between the first substrate and the second substrate. A part of the display area overlaps the UV absorption pattern to define at least one first alignment area, while the part of the display area which does not overlap the UV absorption pattern defines at least one second alignment area. The liquid crystal molecules of the liquid crystal layer present different pre-tilt angles in the first alignment area and the second alignment area.Type: GrantFiled: April 29, 2008Date of Patent: June 28, 2011Assignee: Au Optronics CorporationInventors: Chung-Hsiang Chiu, Ching-Huan Lin, Sung-Kao Liu, Yue-Shih Jeng
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Patent number: 7968158Abstract: The present invention relates to a liquid crystal alignment layer used in a liquid crystal cell, which is capable of providing high pretilt angles.Type: GrantFiled: October 5, 2004Date of Patent: June 28, 2011Assignee: The Hong Kong University of Science and TechnologyInventors: Hoi-Sing Kwok, Fion Sze Yan Yeung, Xie Fengchao, Ophelia Kwan Chui Tsui, Ping Sheng
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Publication number: 20110149210Abstract: A liquid crystal display device comprising, a first substrate, a second substrate, a liquid crystal layer provided between the substrates, a first alignment film provided on the liquid crystal layer side surface of the first substrate, and a second alignment film provided on the liquid crystal layer side surface of the second substrate, wherein the liquid crystal layer includes liquid crystal molecules with negative dielectric anisotropy, the first alignment film and the second alignment film align the liquid crystal molecules substantially vertically to the alignment film surfaces and align the liquid crystal molecules near the first alignment film and the second alignment film such that alignment directions of the liquid crystal molecules near the first and second alignment films are perpendicular to each other, and the first alignment film and the second alignment film are photo-alignment films made of a material having a photosensitive group.Type: ApplicationFiled: March 2, 2011Publication date: June 23, 2011Applicant: Sharp Kabushiki KaishaInventor: Koichi MIYACHI
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Patent number: 7965361Abstract: An MVA-LCD panel, including an active component array substrate, an opposite substrate and a liquid crystal layer disposed between is provided. The active component array substrate includes scan lines, data lines, control lines and pixel units. Each of the pixel units includes an active component, a domain division electrode (DDE) and a pixel electrode. The active component is electrically connected with the corresponding scan line and the corresponding data line, the DDE being electrically connected with the corresponding control line, the pixel electrode being electrically connected with the active component. The pixel electrode has first slits, and the first DDE are disposed under the first slits. The opposite substrate has a common electrode layer facing toward the active component array substrate. The common electrode layer includes second slits and at least a part of the second slits is disposed over the first domain division electrode.Type: GrantFiled: August 31, 2009Date of Patent: June 21, 2011Assignee: Au Optronics CorporationInventor: Jenn-Jia Su
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Patent number: 7965354Abstract: A color filter substrate for a liquid crystal display and a method of fabricating the same are provided. The color filter substrate for a liquid crystal display includes: light shielding parts formed on a front surface of a substrate at predetermined intervals to prevent light leakage; color filter Layers disposed between the light shielding parts on the front surface of the substrate and including color filter patterns of red (R), green (G) and blue (B) for implementing a color image; and a transparent conductive layer formed on a rear surface of the substrate, where the rear surface of the substrate is opposite the front surface of the substrate on which the color filter layers are formed, and formed in a porous structure having a plurality of holes spaced at predetermined intervals. Therefore, it is possible to shield an electrostatic field due to external static electricity and improve image display quality, thereby increasing high brightness characteristics and readability.Type: GrantFiled: April 8, 2008Date of Patent: June 21, 2011Assignee: Hydis Technologies Co., Ltd.Inventors: Cheol Hwan Lee, Yoon Seok Choi, Dae Suk Kim, Suk Choi
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Publication number: 20110141420Abstract: An MVA LCD device includes a first alignment region, a second alignment region, a third alignment region, and a fourth alignment region. The liquid crystal molecules disposed in the first alignment region have a first aligning direction, and the azimuth angle of the first aligning direction is substantially between 70 and 110 degrees. The liquid crystal molecules disposed in the second alignment region have a second aligning direction, and the azimuth angle of the second aligning direction is substantially between 160 and 200 degrees. The liquid crystal molecules disposed in the third alignment region have a third aligning direction, and the azimuth angle of the third aligning direction is substantially between 250 and 290 degrees. The liquid crystal molecules disposed in the fourth alignment region have a fourth aligning direction, and the azimuth angle of the fourth aligning direction is substantially between ?20 and 20 degrees.Type: ApplicationFiled: April 8, 2010Publication date: June 16, 2011Inventors: Cho-Yan Chen, Kuan-Chun Huang, Ching-Huan Lin, Ching-Sheng Cheng, Chih-Hung Shih
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Patent number: 7961265Abstract: An array substrate includes first and second gate lines, a data line, a pixel electrode, a domain electrode, first, second and third switching elements, and a voltage-changing part. The domain-dividing electrode divides the first and second pixel parts into a plurality of areas. The first, second and third switching elements are controlled by a first gate signal applied from the first gate line. The first, second and third switching elements apply a data signal received from the data line to the first and second pixel parts and the domain-dividing electrode, respectively. The voltage-changing part is controlled by a second gate signal applied from the second gate line. The voltage-changing part increases a voltage level of the domain-dividing electrode and decreases a voltage level of the second pixel part.Type: GrantFiled: August 15, 2008Date of Patent: June 14, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Jian-Gang Lu, Hee-Seop Kim, Young-Chol Yang, Seung-Hoon Lee
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Publication number: 20110134380Abstract: To provide a production method of a liquid crystal display device and a liquid crystal display device, in which generation of a joint line on a display screen is suppressed and yield can be improved even if a substrate is subjected to an alignment treatment by completing exposure for the substrate through several exposures in a liquid crystal display device including pixels each having two or more domains.Type: ApplicationFiled: December 3, 2010Publication date: June 9, 2011Applicant: Sharp Kabushiki KaishaInventors: Iichiro INOUE, Hiroyuki Hakoi, Shinichi Terashita, Koichi Miyachi
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Patent number: 7956943Abstract: A thin film transistor array panel according to an embodiment includes: a substrate; a plurality of gate line formed on the substrate; a plurality of first capacitor electrodes formed on the substrate and separated from the gate lines; a plurality of data line intersecting the gate lines; a plurality of thin film transistor connected to the gate lines and the data lines; a plurality of second capacitor electrodes disposed on the first electrode; a plurality of interconnections connected to the second capacitor electrodes and the thin film transistor and disposed symmetrical to the data lines; and a plurality of pixel electrode, each pixel electrode including a first subpixel electrode connected to one of the thin film transistors and a second subpixel electrode connected to one of the first capacitor electrodes.Type: GrantFiled: October 1, 2009Date of Patent: June 7, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Chang-Hun Lee, Hyun-Wuk Kim, Mee-Hye Jung, Kyoung-Ju Shin, Hak-Sun Chang, Yoon-Sung Um