With Plural Alignments On The Same Substrate Patents (Class 349/129)
  • Patent number: 8531635
    Abstract: Disclosed herein is a liquid-crystal display apparatus including: a pair of substrates facing each other to sandwich a liquid-crystal layer; signal and scan lines laid out in a matrix form to sandwich a first insulation film on one of the substrates; a lower electrode created in each area enclosed by the signal and scan lines; a second insulation film created on a surface of the lower electrode; an upper electrode on which a plurality of slits are created in parallel all over an entire surface of the second insulation film; and an oriented film created to cover surfaces of the upper electrode and the second insulation film.
    Type: Grant
    Filed: April 12, 2011
    Date of Patent: September 10, 2013
    Assignee: Japan Display West Inc.
    Inventor: Hideki Kaneko
  • Patent number: 8525965
    Abstract: A unit pixel of a liquid crystal display panel includes a plurality of domains formed using a photoalignment process technology. The domains have different domain alignment vectors, and major axes of liquid crystal molecules on alignment layers are aligned in parallel to transmission axes of the liquid crystal display panel. In addition, the unit pixel has a pixel electrode including slits. The slits have a slit angle at which the slits cross alignments of the domains at a predetermined angle, and the slit angle is less than 45°. As a result, transmittance of the unit pixel may increase, ensuring high image quality.
    Type: Grant
    Filed: August 19, 2011
    Date of Patent: September 3, 2013
    Assignee: Samsung Display Co., Ltd
    Inventors: Young-Gu Kim, Jin-Soo Jung, Hak-Sun Chang, Hee-June Kwak
  • Patent number: 8514270
    Abstract: A liquid crystal display includes a first substrate and a second substrate facing each other, a pixel electrode disposed on the first substrate and including a first sub-pixel electrode and a second sub-pixel electrode spaced apart from the first sub-pixel electrode by a gap, a common electrode disposed on the second substrate, a shielding member disposed on the first substrate or the second substrate and overlapping the gap between the first sub-pixel electrode and the second sub-pixel electrode, an alignment layer disposed on at least one of the pixel electrode and the common electrode, and a liquid crystal layer disposed between the first substrate and the second substrate.
    Type: Grant
    Filed: April 2, 2012
    Date of Patent: August 20, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Mee-Hye Jung, Chong-Chul Chai, Yong-Woo Lee, Young-Gu Kim
  • Patent number: 8514358
    Abstract: A liquid crystal display device including a pair of substrates, a liquid crystal layer including liquid crystal molecules disposed between the substrates, an alignment layer disposed above at least one of the substrates, and a polymer disposed on the alignment layer. The device also includes scanning lines and signal lines, a TFT connected to one of the scanning lines and one of the signal lines, and a pixel electrode connected to the TFT and applying driving voltages to the liquid crystal molecules in an area defined by the pixel electrode. The polymer is formed through polymerization of monomers, different from monomers constituting the alignment layer, by active energy ray irradiation, or by both active energy ray irradiation and heat, and is arranged to align the liquid crystal molecules without rubbing so that the liquid crystal molecules in the area form multiple domains when driving voltages are applied from the TFT.
    Type: Grant
    Filed: June 26, 2012
    Date of Patent: August 20, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Yohei Nakanishi, Yuichi Inoue, Kazutaka Hanaoka, Hidefumi Yoshida, Yasutoshi Tasaka, Kunihiro Tashiro
  • Publication number: 20130208216
    Abstract: A normally black liquid crystal display device includes a liquid crystal layer in which liquid crystal molecules are arranged vertically when no voltage is applied, and arranged horizontally by applying a voltage. In each of pixel regions in alignment films which are segmented in a grid by source lines and gate lines, is divided into two along a direction parallel to the source lines. The first alignment film includes a first region and a second region. The second alignment film includes a third region facing the first region and a fourth region facing the second region. In an adjacent pair of the pixel regions, pairs of the regions are adjacent to each other with corresponding one of the source lines interposed therebetween.
    Type: Application
    Filed: June 17, 2011
    Publication date: August 15, 2013
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Takayuki Hayano, Masayuki Tsuji, Kohji Hayashi
  • Patent number: 8508683
    Abstract: A flat panel display having an improved picture quality is disclosed. In on embodiment, a first pixel electrode and a second pixel electrode are formed in each subpixel area. The electrodes enclose an open space (gap) such that their outer boundary has a substantially rectangular shape. The flat panel display may also include a capacitance electrode coupled to the second pixel electrode to form a coupling capacitor. In use, the coupling capacitor operates such that a magnitude of a voltage applied to the first pixel electrode is lower than an applied data voltage, and a magnitude of a voltage applied to the second pixel electrode is higher than an applied voltage. The different voltages operate such that a tilt direction of LC molecules disposed above the first pixel electrode differs from a tilt direction of LC molecules disposed above the second pixel electrode.
    Type: Grant
    Filed: March 28, 2011
    Date of Patent: August 13, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventor: Jang-Kun Song
  • Patent number: 8508704
    Abstract: A pixel array including a plurality of scan lines, a plurality of data lines, and a plurality of sub-pixels is provided. Each sub-pixel is electrically connected to one of the scan lines and one of the data lines correspondingly. Each sub-pixel arranged in the nth row includes a first switch, a second switch, a first pixel electrode, a second pixel electrode and a third switch. The first switch and the second switch are electrically connected to the nth scan line and the mth data line. The first pixel electrode is electrically connected to the first switch. The second pixel electrode is electrically connected to the second switch and has an opening for accommodating the first pixel electrode. In each sub-pixel, the first pixel electrode is surrounded by the second pixel electrode. In addition, the third switch is electrically connected to the (n+1)th scan line and the second pixel electrode.
    Type: Grant
    Filed: March 23, 2010
    Date of Patent: August 13, 2013
    Assignee: Au Optronics Corporation
    Inventor: Te-Wei Chan
  • Patent number: 8508699
    Abstract: A transflective LCD unit includes a liquid crystal (LC) layer: first and second substrates sandwiching therebetween the LC layer to define an array of pixels each including a reflective area and a transmissive area; an electrode assembly for driving the LC layer such that the LC layer in the reflective area is driven in a longitudinal-electric-field mode and the LC layer in the transmissive area is driven in a lateral-electric-field mode; and a reverse-tilt control member for controlling a reverse tilt area in which a reverse tilt of LC molecules occurs near the boundary between the reflective area and the transmissive area.
    Type: Grant
    Filed: November 10, 2008
    Date of Patent: August 13, 2013
    Assignee: NLT Technologies, Ltd.
    Inventors: Kenichi Mori, Michiaki Sakamoto, Hiroshi Nagai
  • Patent number: 8508702
    Abstract: This liquid crystal display device comprises electrodes that are formed on at least one of a pair of substrates, and are used for applying voltage onto liquid crystal molecules; a first alignment control layer that is sandwiched between the substrates, and makes the liquid crystal molecules aligned vertically; a liquid crystal layer formed by sandwiching a liquid crystal composition comprising a liquid crystal and a photopolymerizable compound between the substrates, followed by ultraviolet ray irradiation; and a second alignment control layer composed of a UV-cured product formed by the ultraviolet ray irradiation that is formed so that not less than two domains having different threshold voltages are present in a pixel, and at least one of the domains has a threshold voltage higher than the threshold voltage by the first alignment control layer. Liquid crystal display devices having good half-tone viewing angle characteristics are provided.
    Type: Grant
    Filed: October 20, 2005
    Date of Patent: August 13, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Shingo Kataoka, Yoshio Koike
  • Patent number: 8502943
    Abstract: A new type of liquid crystal display (LCD) device with improved high transmittance and wide-view-angle characteristics while without gray-level inversion at an inclined viewing angle is provided. The LCD device includes a first substrate with common electrodes, a second substrate with at least one pixel unit, a liquid crystal (LC) layer disposed between the first substrate and the second substrate, a first polarizer, and a second polarizer. The pixel unit has a pixel electrode, which is formed by at least one dense electrode area and at least one sparse electrode area. The LC molecules of the LC layer form a continuous-domain alignment after being driven by a voltage.
    Type: Grant
    Filed: April 27, 2011
    Date of Patent: August 6, 2013
    Assignee: Innolux Corporation
    Inventors: Shih-Hung Fan, Yuhren Shen, Cheng-Chung Peng
  • Patent number: 8497002
    Abstract: An alignment film is given a 2-layer structure comprising a photoalignment film that is photoalignable and a low-resistivity alignment film whose resistivity is smaller than that of the photoalignment film. The photoalignment film is formed by a polyimide whose precursor is polyamide acid alkyl ester, the number molecular weight of the photoalignment film is large, and the stability of alignment of the photoalignment film by photoalignment is excellent. The low-resistivity alignment film is formed by a polyimide whose precursor is polyamide acid, the number molecular weight of the low-resistivity alignment film is small, and the resistivity of the low-resistivity alignment film is small. The 2-layer structure alignment film can be maintaining an excellent photoalignment characteristic, so DC afterimages can be controlled.
    Type: Grant
    Filed: September 16, 2009
    Date of Patent: July 30, 2013
    Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co. Ltd.
    Inventors: Chikae Matsui, Noboru Kunimatsu, Hidehiro Sonoda
  • Patent number: 8497965
    Abstract: An array substrate of a liquid crystal display (LCD) device and a method of manufacturing the array substrate area disclosed. An array substrate of an LCD device includes an insulation substrate, a gate line, a data line, a thin film transistor connected to the gate line and the data line, a common electrode disposed at a pixel area, a pixel electrode overlapping with the common electrode, and a common line. The common line is connected to the common electrode and overlaps with a gap between the common electrode and the data line.
    Type: Grant
    Filed: October 10, 2008
    Date of Patent: July 30, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventor: Youngjoon Cho
  • Patent number: 8497001
    Abstract: A first substrate and a second substrate are provided. An alignment process is performed on a surface of the first substrate and a surface of the second substrate respectively. A liquid crystal mixture is prepared, where the liquid crystal mixture includes a liquid crystal molecule and a liquid crystal monomer having a functional group of diacrylates, and the liquid crystal monomer having the functional group of diacrylates occupies 0.01-2 wt % of the liquid crystal mixture. The first substrate and the second substrate are assembled, and the liquid crystal mixture is filled therebetween. A polymerization curing process is performed such that the liquid crystal monomer having the functional group of diacrylates is polymerized to respectively form a liquid crystal polymer film on the aligned surfaces of the first and second substrates. The method enhances anchoring energy and reduces problems of V-T shift, surface gliding, and residual image.
    Type: Grant
    Filed: November 2, 2012
    Date of Patent: July 30, 2013
    Assignees: Taiwan TFT LCD Association, Chunghwa Picture Tubes, Ltd., AU Optronics Corporation, Hannstar Display Corporation, Chi Mei Optoelectronics Corporation, Industrial Technology Research Institute
    Inventors: Cho-Ying Lin, Ding-Jen Chen, Hui-Min Lin, Yang-Ching Lin
  • Patent number: 8497960
    Abstract: A liquid-crystal display device makes it possible to attach an optical element to a liquid-crystal display panel with high positional accuracy while avoiding or minimizing the enlargement of the picture-frame region (i.e., the non-display region) induced by the formation of markers on the panel and the increase of the fabrication cost. The panel comprises a main substrate, an opposite substrate, and a liquid crystal enclosed in a gap between the main and opposite substrates, wherein a polarizer plate is attached at least to the opposite substrate. Markers for attaching an optical element to the panel are formed at positions that overlap with the polarizer plate in a non-display region on the main or opposite substrate. Alignment direction regulators regulate the alignment of the liquid crystal molecules to a predetermined direction in the vicinities of the markers, allowing light to pass through at least the opposite substrate.
    Type: Grant
    Filed: October 31, 2012
    Date of Patent: July 30, 2013
    Assignee: NLT Technologies, Ltd.
    Inventors: Tsutomu Hiroya, Koji Shigemura, Jin Matsushima
  • Patent number: 8497962
    Abstract: A liquid crystal display device includes first and second substrates, 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. 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: Grant
    Filed: May 3, 2012
    Date of Patent: July 30, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Koichi Miyachi
  • Patent number: 8497963
    Abstract: A pixel unit of a liquid crystal display includes a first sub-pixel electrode coupled by a direct current path to a corresponding switching element and a second sub-pixel electrode capacitively connected to the first sub-pixel electrode. The second sub-pixel electrode has a protrusion extending upwardly toward a spaced apart common electrode. The common electrode has a cut-out directly above the protrusion.
    Type: Grant
    Filed: May 14, 2012
    Date of Patent: July 30, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jae-Hyun Kim, Gee-Bun Kim, Ae Shin
  • Patent number: 8493534
    Abstract: A liquid crystal display device including first and second substrates and a liquid crystal layer therebetween. The device also includes a plurality of gate bus lines, and a plurality of drain bus lines that intersect the gate bus lines, as well as a plurality of pixel regions defined by the gate and drain bus lines. Additionally, the device includes a thin film transistor and a resin color filter layer formed in each of the pixel regions. There is a pixel electrode formed in each of the pixel regions on the resin color filter layer that includes a slit extending in parallel with an edge of the pixel region and a plurality of finer slits diagonally extending from the slit. Finally, the device includes a common electrode formed on the second substrate, and a vertical alignment film applied to each of surfaces of the substrates.
    Type: Grant
    Filed: June 8, 2012
    Date of Patent: July 23, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Manabu Sawasaki, Yuichi Inoue, Masakazu Shibasaki, Naoto Kondo, Tetsuya Fujikawa, Takashi Takagi, Tomonori Tanose, Tomoshige Oda, Akira Komorita, Katsunori Misaki, Shiro Hirota
  • Patent number: 8482685
    Abstract: In a liquid crystal display panel, an array substrate includes a plurality of pixels that each having a switching device, a first pixel electrode, a coupling electrode, and a second pixel electrode. The switching device outputs a data voltage in response to a gate signal, and the first pixel electrode and the coupling electrode are connected to an output electrode of the switching device to receive the data voltage. The second pixel electrode faces the coupling electrode and receives a voltage lower than the data voltage. The resistance between the second pixel electrode and the coupling electrode is less than the resistance between the second pixel electrode and the common electrode.
    Type: Grant
    Filed: December 2, 2010
    Date of Patent: July 9, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventor: Kyung-Wook Kim
  • Patent number: 8482708
    Abstract: According to an exemplary embodiment of the present invention, a liquid crystal layer may be aligned by using an alignment layer including an alignment base layer having a horizontal alignment base layer and a vertical alignment base layer, and an alignment control agent. Accordingly, a multi-domain liquid crystal display having an excellent viewing angle for all grays may be provided. Also, a multi-domain liquid crystal display having a fast response speed as well as an excellent viewing angle for all grays may be provided.
    Type: Grant
    Filed: March 12, 2010
    Date of Patent: July 9, 2013
    Assignee: IUCF-Hyu (Industry-University Cooperation Foundation Hanyang University)
    Inventor: Jae-Hoon Kim
  • Patent number: 8482709
    Abstract: In a liquid crystal display, a first alignment layer formed on a first substrate includes a first region aligned in a first direction and a second region aligned in a second direction opposite to the first direction, and a second alignment layer formed on a second substrate facing the first substrate includes a third region aligned in a third direction different from the first direction and a fourth region aligned in a fourth direction opposite to the third direction. The liquid crystal molecules interposed between the first and second alignment layers are aligned in different directions in different domains defined by the first to fourth regions. A pixel electrode includes an extension part extending in at least one of the first to fourth directions. The aperture ratio and the light transmittance of the liquid crystal display are improved.
    Type: Grant
    Filed: April 13, 2011
    Date of Patent: July 9, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Kyoungju Shin, YongHwan Shin, Janwoo Lee, Young Gu Kim, Hyeongchan Ko, Hyunku Ahn, Baekkyun Jeon, Kyoungtae Kim, Gyo Jic Shin, Tai-Huem Om, Min-Sik Jung, Hoi-Lim Kim, Jin-Soo Jung
  • Patent number: 8482703
    Abstract: A transflective liquid crystal display is provided which includes a color-filter substrate, an active matrix substrate, and a liquid crystal layer interposed between them. The active matrix substrate includes a first transparent substrate and includes a plurality of switching devices, a plurality of transparent pixel electrodes and a plurality of reflective pixel electrodes formed on the first transparent substrate. The color-filter substrate includes a second transparent substrate, a first and second transparent conducting layers and a dielectric layer. The first transparent conducting layer is interposed between the second transparent substrate and the second transparent conducting layer, and the dielectric layer is interposed between the first and second transparent conducting layers. The second transparent conducting layer in each pixel area has at least one opening. The openings positionally correspond to the reflective pixel electrodes.
    Type: Grant
    Filed: July 13, 2010
    Date of Patent: July 9, 2013
    Assignees: Dongguan Masstop Liquid Crystal Display Co., Ltd., Wintek Corporation
    Inventors: Wen-Chun Wang, Ming-Chang Yu, Yung-Cheng Chang
  • Patent number: 8482702
    Abstract: 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: Grant
    Filed: August 21, 2009
    Date of Patent: July 9, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Yasushi Asaoka, Eiji Satoh, Kiyoshi Minoura, Sayuri Fujiwara
  • Patent number: 8482701
    Abstract: The present invention provides a polymer stabilization alignment liquid crystal display panel having a plurality of pixel regions. Each pixel region includes a main region and a sub region, and a first pixel electrode and a second pixel electrode correspond to the main region and the sub region respectively. Each first pixel electrode is separated from the adjacent data line and thereby forming a gap therebetween. Each second pixel electrode partially overlaps the adjacent data line. In addition, each second pixel electrode includes a plurality of branches, and at least one edge of the branches may be parallel to the data lines. Accordingly, the present invention not only can increase the aperture ratio, but also well control the liquid crystal molecules located near the data lines. Therefore, the display quality of the liquid crystal display panel can be improved.
    Type: Grant
    Filed: June 29, 2010
    Date of Patent: July 9, 2013
    Assignee: Au Optronics Corp.
    Inventors: Chin-An Tseng, Chia-Yu Lee, Yen-Heng Huang, Wen-Hsien Tseng, Chia-Hui Pai, Chung-Kai Chen, Wei-Yuan Cheng, Ting-Yi Cho
  • Patent number: 8477276
    Abstract: A thin film transistor array substrate comprises a transparent substrate, and scanning lines, data lines and pixel regions that are formed on the transparent substrate. Each pixel region comprises a pixel electrode, a thin film transistor for controlling the pixel electrode, a first push alignment electrode and a second push alignment electrode. Projections of the first and second push alignment electrodes on the transparent substrate are located on two opposite sides of the pixel electrode. The pixel electrode is covered with an insulation layer and the insulation layer is provided with a pull alignment opening. When the thin film transistor array substrate is in operation, an oblique pull electric field is formed at the pull alignment opening, and transverse push electric fields are formed between the first push alignment electrode and the pixel electrode as well as between the second push alignment electrode and the pixel electrode, respectively.
    Type: Grant
    Filed: November 2, 2010
    Date of Patent: July 2, 2013
    Assignee: Infovision Optoelectronics (Kunshan) Co. Ltd.
    Inventors: Te-Chen Chung, Liufei Zhou, Yanbing Qiao, Xia Huang, Chia-Te Liao
  • Patent number: 8471989
    Abstract: A pixel unit of an FFS type TFT-LCD array substrate comprises a slit electrode. The slit electrode comprises at least one slit unit, a direction from one side of the slit unit to the opposite side of the slit unit is defined as a first direction, the slit unit comprises a plurality of slits, extending in a same direction and arranged along the first direction, and electrode parts between two adjacent slits. The sum of the width of each electrode part and the width of a slit adjacent to the electrode part at a side in the first direction increases gradually along the first direction.
    Type: Grant
    Filed: September 22, 2010
    Date of Patent: June 25, 2013
    Assignee: Beijing BOE Optoelectronics Technology Co., Ltd.
    Inventor: Hanjun Park
  • Patent number: 8471999
    Abstract: Disclosed herein is a liquid crystal lens with a variable focal length. The gradient profile of the liquid crystals molecules that causes the gradient profile of the refractive index is achieved by inducing non-uniformly distributed anchoring energy and an external electric or magnetic field applied to the liquid crystal layer. Unlike existing electrically controlled liquid crystal lens, the external electric or magnetic field has a uniform spatial distribution within the liquid crystal layer. The focal length of the liquid crystal lens is controlled via the non-uniformly distributed anchoring energy and by varying the uniformly distributed electric or magnetic field.
    Type: Grant
    Filed: April 20, 2009
    Date of Patent: June 25, 2013
    Assignee: The Hong Kong University of Science and Technology
    Inventors: Sergiy Valyukh, Vladimir Grigorievich Chigrinov, Hoi Sing Kwok
  • Patent number: 8467022
    Abstract: A liquid crystal display device comprising: a liquid crystal layer provided between a first substrate and a second substrate; first electrodes, which are formed above the first substrate as a first layer, each first electrode having a side which extends to incline toward a first direction in which the data line extends, that is, second direction, each first electrode electrically connected to corresponding data line via corresponding switching device; and a second electrode, which is formed above the first substrate as a second layer, having a slit in each part of the area overlapping with corresponding first electrode, at least one side of the slit extending in the second direction.
    Type: Grant
    Filed: October 1, 2009
    Date of Patent: June 18, 2013
    Assignee: Casio Computer Co., Ltd.
    Inventor: Shinichi Shimomaki
  • Patent number: 8462302
    Abstract: 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: Grant
    Filed: April 8, 2010
    Date of Patent: June 11, 2013
    Assignee: AU Optronics Corp.
    Inventors: Cho-Yan Chen, Kuan-Chun Huang, Ching-Huan Lin, Ching-Sheng Cheng, Chih-Hung Shih
  • Patent number: 8456447
    Abstract: A coordinate detection system can comprise a display screen, a touch surface corresponding the top of the display screen or a material positioned above the screen and defining a touch area, at least one camera outside the touch area and configured to capture an image of space above the touch surface, an illumination system comprising a light source, the illumination system configured to project light from the light source through the touch surface, and a processor executing program code to identify whether an object interferes with the light from the light source projected through the touch surface based on the image captured by the at least one camera. Light can be directed upward by sources positioned behind the screen, by sources positioned behind the screen that direct light into a backlight assembly that directs the light upward, and/or by a forward optical assembly in front of the screen that directs the light upward.
    Type: Grant
    Filed: September 29, 2009
    Date of Patent: June 4, 2013
    Assignee: Next Holdings Limited
    Inventor: John David Newton
  • Patent number: 8456597
    Abstract: A liquid crystal display includes a first insulating substrate. A pixel electrode is formed on a top surface of the first insulating substrate. The pixel electrode has a first opening pattern at each pixel area. The pixel electrode is substantially rectangular in shape with first second long sides, and first and second short sides. The pixel electrode is divided into an upper region defined by the first and second long sides and first short side, and a lower region defined by the first and second long sides and second short side. A common electrode is formed on a bottom surface of a second insulating substrate, and has a second opening pattern at each pixel area. The first and second opening patterns each have a plurality of openings, the openings of the first opening pattern and the second opening pattern being alternately arranged parallel to each other.
    Type: Grant
    Filed: May 8, 2012
    Date of Patent: June 4, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jang-Kun Song, Jae-Jin Ryu
  • Patent number: 8456600
    Abstract: An array substrate for an in-plane switching mode liquid crystal display device includes a gate line on a substrate including a pixel region, the pixel region including a first domain at a lower side with respect to the gate line and a second domain at an upper side with respect to the gate line; a data line crossing the gate line; a thin film transistor in the pixel region and at a crossing portion of the gate and data lines; a plurality of first pixel electrodes in the first domain; a plurality of second pixel electrodes in the second domain, the plurality of first pixel electrodes and plurality of second pixel electrodes sharing the thin film transistor; a plurality of first common electrodes in the first domain and alternately arranged with the plurality of first pixel electrodes; and a plurality of second common electrodes in the second domain and alternately arranged with the plurality of second pixel electrodes.
    Type: Grant
    Filed: April 15, 2011
    Date of Patent: June 4, 2013
    Assignee: LG Display Co., Ltd.
    Inventor: Won-Ho Lee
  • Patent number: 8456599
    Abstract: A display substrate includes a switching element and a pixel electrode. The pixel electrode is electrically connected to the switching element. The pixel electrode includes a plurality of slit electrodes that are conductive elements respectively disposed in a plurality of domains oriented substantially parallel to each other and extending substantially in a first direction. The slit electrodes each extend in a direction different from the first direction. Each slit electrode is an elongated structure having first and second long sides, and first and second short sides positioned opposite to each other and each extending between the first and second long sides, where the first long side oriented at an angle with respect to the first direction that is different from that of the second long side. Thus, a plurality of domains is formed, so that generation of texture may be decreased and compensating efficiency may be enhanced.
    Type: Grant
    Filed: December 2, 2009
    Date of Patent: June 4, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Youn-Hak Jeong, Hee-Hwan Lee, Keun-Chan Oh
  • Patent number: 8451392
    Abstract: A liquid crystal display (LCD) includes: a first substrate; a second substrate facing the first substrate; an electrode portion formed on at least one of the first substrate and the second substrate, and configured to generate an electric field between the first substrate and the second substrate; and a liquid crystal film positioned between the first substrate and the second substrate, and at least one liquid crystal and an associated liquid crystal space in the liquid crystal film.
    Type: Grant
    Filed: April 11, 2011
    Date of Patent: May 28, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jong-In Baek, Won-Sang Park, Jae-Hyun Kim, Jae-Ik Lim
  • Patent number: 8451393
    Abstract: A liquid crystal display includes: a plurality of signal lines disposed on a substrate, a pixel electrode connected to the plurality of signal lines and including a first subpixel electrode and a second subpixel electrode, a common electrode facing the pixel electrode, a liquid crystal layer disposed between the pixel electrode and the common electrode and a step-up capacitor connected between an output terminal of a switching element connected to the second subpixel electrode and the first subpixel electrode. The step-up capacitor is formed by overlapping a first conductor connected to the output terminal of the switching element and a second conductor connected to the first subpixel electrode via an insulating layer, and the second conductor has a cutout at an edge opposite the output terminal of the switching element.
    Type: Grant
    Filed: July 8, 2010
    Date of Patent: May 28, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Seon-Ah Cho, Jang-Kun Song, Hyun-Wuk Kim, Eun-Je Jang, You-Sik Shin
  • Patent number: 8451407
    Abstract: A liquid crystal display includes a first substrate including pixels, each having a transmissive area and a reflective area, a second substrate, and a liquid crystal layer disposed between the first and second substrates. Each of the pixels includes first and second thin film transistors which output a data signal in response to a first gate signal, a transmissive pixel electrode disposed in the transmissive area and electrically connected to the first thin film transistor to charge a first pixel voltage based on the data signal, a reflective pixel electrode disposed in the reflective area and electrically connected to the second thin film transistor to charge a second pixel voltage based on the data signal, and a voltage controller which controls the first pixel voltage and the second pixel voltage in response to a second gate signal, which is generated after the first gate signal.
    Type: Grant
    Filed: November 18, 2009
    Date of Patent: May 28, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Youn Hak Jeong, Jooseok Yeom, Keunchan Oh, Heehwan Lee, Jaejin Lyu
  • Patent number: 8441604
    Abstract: A VA mode LCD device is disclosed, to improve the viewing-angle properties by isotropically compensating for a viewing angle, in which the VA mode LCD device includes first and second substrates; a plurality of gate and data lines formed on the first substrate, and formed perpendicularly to define a plurality of pixel regions. A thin film transistor is formed in each pixel region of the first substrate. A pixel electrode and a common electrode are formed in each pixel of the respective first and second substrates, wherein the pixel and common electrodes generate an electric field. At least one first slit of a curved-stripe shape, such as a circular-stripe shape, is formed in the pixel electrode of the first substrate. At least one second slit is formed in the common electrode of the second substrate. A liquid crystal layer formed between the first and second substrates.
    Type: Grant
    Filed: October 3, 2011
    Date of Patent: May 14, 2013
    Assignee: LG Display Co., Ltd.
    Inventors: Youn-Seung Choi, Jin-Ho Kim
  • Patent number: 8441605
    Abstract: The present invention provides a polarizing plate including: a layer of polarizer for polarizing incident light and emitting the polarized light; and a coating type optically anisotropic layer disposed on the side to which the polarized light is emitted from the polarizer layer.
    Type: Grant
    Filed: May 18, 2012
    Date of Patent: May 14, 2013
    Assignee: Japan Display West Inc.
    Inventor: Eiji Sakai
  • Patent number: 8436970
    Abstract: Provided is a liquid crystal display including: a first substrate and a second substrate facing each other; a pixel electrode disposed on the first substrate; an opposing electrode disposed on the second substrate; a liquid crystal layer in vertical alignment mode interposed between the first substrate and the second substrate and including a plurality of liquid crystal molecules; and a tilt direction determining member determining tilt directions of the liquid crystal molecules when an electric field is generated in the liquid crystal layer, wherein the liquid crystal layer includes a first area and a second area in each of the first area and the second area, the liquid crystal molecules being aligned to have a pretilt without the electric field in the liquid crystal layer, and a pretilt angle of the liquid crystal molecules in the first area is larger a pretilt angle that of the liquid crystal molecules in the second area.
    Type: Grant
    Filed: August 18, 2011
    Date of Patent: May 7, 2013
    Assignee: Samsung Display Co., Ltd.
    Inventors: Min-Goo Seok, Keun Chan Oh, Dong-Gi Seong, Min-Jae Kim, Min-Hee Kim
  • Patent number: 8436971
    Abstract: To prevent occurrence of display roughness in a PSA-type liquid crystal display device, a liquid crystal display device of the present invention includes: a first substrate 10 which includes a signal line 15 for supplying a display signal to thin film transistors, an insulating layer 18 provided on the signal line 15, and pixel electrodes 12 provided in a matrix arrangement; a second substrate 20 which includes a counter electrode 22; a liquid crystal layer 30 interposed between the first substrate 10 and the second substrate 20; a vertical alignment film 33 provided between the first substrate 10 and the liquid crystal layer 30; and an alignment sustaining layer 32 provided between the vertical alignment film 33 and the liquid crystal layer 30 for regulating an orientation of liquid crystal molecules 31 included in the liquid crystal layer 30.
    Type: Grant
    Filed: July 14, 2009
    Date of Patent: May 7, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Hisashi Nagata
  • Patent number: 8432518
    Abstract: A liquid crystal display device including first and second substrates; liquid crystal contained between the substrates; a polymer which determines directions in which liquid crystal molecules tilt; a plurality of gate and data bus lines; and a plurality of picture elements. At least one of the picture elements includes a switching element, and first and second sub picture element electrodes. The first sub picture element electrode connects to the switching element and the second sub picture element electrode connects, via capacitive coupling, to the switching element. The first substrate further includes a control electrode that is connected to the switching element and the first sub picture element electrode. The control electrode is capacitively coupled to the second sub picture element electrode through an insulating film. The area of the second sub picture element electrode is larger than the area of the first sub picture element electrode.
    Type: Grant
    Filed: January 17, 2011
    Date of Patent: April 30, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventors: 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
  • Patent number: 8432519
    Abstract: A pixel includes a plurality of first linear alignment regulating structures (22) provided on the liquid crystal layer side of a first substrate and a plurality of second linear alignment regulating structures (44) provided on the liquid crystal layer side of a second substrate. The first and second linear alignment regulating structures each have a first component (22a, 44a) extending along a first axis and a second component (22b, 44b) extending along a second axis which is different from the first axis, the second linear alignment regulating structures being linear dielectric protrusions. The liquid crystal display device further includes a connection dielectric protrusion (45a, 45b, 45c) for interconnecting two linear dielectric protrusions which belong to pixels adjoining each other and which are not collinear.
    Type: Grant
    Filed: May 24, 2010
    Date of Patent: April 30, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Masahiro Yoshida, Takahiro Sasaki, Yasunao Iwata
  • Patent number: 8432520
    Abstract: A liquid crystal display device in which alignment control in a vertical-alignment-type liquid crystal layer is excellent at a side portion or a corner portion of a pixel electrode. The liquid crystal display device includes a pixel electrode including openings of slits as an alignment control mechanism, a common electrode including linear protrusions as an alignment control mechanism, the electrodes opposed to each other, and a vertical-alignment-type liquid crystal layer sandwiched between the electrodes, wherein the linear protrusion is placed at a position where the linear protrusion controls alignment in the liquid crystal layer inside a position where an oblique electric field generated at the edge of an corner portion of the pixel electrode at the time when a voltage is applied between the electrodes controls the alignment in the liquid crystal layer.
    Type: Grant
    Filed: April 16, 2012
    Date of Patent: April 30, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Yuichi Inoue, Hidehiko Yamaguchi
  • Patent number: 8427611
    Abstract: A production method for making a liquid crystal display device includes subjecting a first alignment film and/or a second alignment film to scanning exposure continuously over a plurality of pixel regions; the scanning exposure including, in an inside of each of a plurality of pixel regions, a first scanning exposure for aligning liquid crystal molecules in a first alignment direction and a second scanning exposure for aligning liquid crystal molecules in a second alignment direction. The second alignment direction may be parallel and opposed to the first alignment direction. In the exposures, a light beam may be made incident from a oblique direction to a normal line on the substrate surface.
    Type: Grant
    Filed: May 14, 2012
    Date of Patent: April 23, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Hiroyuki Hakoi, Iichiro Inoue, Koichi Miyachi
  • Patent number: 8427612
    Abstract: A liquid crystal device includes a first substrate, a second substrate disposed to face the first substrate, a plurality of pixel electrodes arranged between the first substrate and the second substrate at intervals with each other, and a liquid crystal layer. The liquid crystal layer is interposed between the first substrate and the second substrate, and configured to include a vertical alignment liquid crystal. When the interval between the pixel electrodes adjacent to each other is s [?m], the thickness of the liquid crystal layer is d [?m] and the pretilt angle of the vertical alignment liquid crystal is ?[°], a relation equation ?1.6×s/d+4.4????2.6×s/d+5.6 is satisfied.
    Type: Grant
    Filed: April 1, 2011
    Date of Patent: April 23, 2013
    Assignee: Seiko Epson Corporation
    Inventor: Ayae Sawado
  • Patent number: 8427610
    Abstract: A liquid crystal display device includes a pair of substrates provided opposite to each other, a common electrode provided on one of the pair of substrates, and a pixel electrode provided on the other of the pair of substrates. A vertical alignment type liquid crystal is sealed between the pair of substrates. An alignment film is polymerizable upon irradiation of UV, and is obtained by polymerizing substantially the entire alignment film with a voltage applied between the electrodes after the liquid crystal is sealed between the substrates. A pixel region has areas whose electro-optical characteristics are different from each other because of a difference between applied voltages at the time of polymerization.
    Type: Grant
    Filed: May 23, 2011
    Date of Patent: April 23, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Kazuya Ueda, Tsuyoshi Kamada, Hidefumi Yoshida, Yoshio Koike, Kenji Okamoto, Yuichi Inoue, Seiji Tanuma
  • Patent number: 8421975
    Abstract: The present invention provides a liquid crystal display device which can suppress generation of an afterimage.
    Type: Grant
    Filed: June 22, 2009
    Date of Patent: April 16, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Katsuhiko Morishita, Toshihiro Matsumoto, Tsuyoshi Okazaki
  • Patent number: 8421974
    Abstract: A pixel structure includes a first pixel electrode and a second pixel electrode. The second pixel electrode is configured around the first pixel electrode. The first pixel electrode is coupled to a first voltage and the second pixel electrode is coupled to a second voltage. The second voltage is higher than the first voltage. The area of the first pixel electrode is larger than that of the second pixel electrode.
    Type: Grant
    Filed: December 28, 2007
    Date of Patent: April 16, 2013
    Assignee: Chimei Innolux Corporation
    Inventors: Chih Yung Hsieh, Chien Hong Chen
  • Patent number: 8421971
    Abstract: The present invention provides a liquid crystal display (LCD) module and a one-piece back plate thereof. The one-piece back plate of the LCD module comprises a plurality of first stepped portions, a plurality of second stepped portions and a plurality of engaging portions extending and being bent from the bottom thereof in sequence. An optical film assembly is supported and mounted by the first stepped portions, and a liquid crystal panel is supported and mounted by the second stepped portions. With the design of the one-piece back plate of the LCD module of the present invention, it is possible to omit the housing and the front frame, and the liquid crystal panel can be directly arranged on the one-piece back plate, so as to simplify and speed up the assembly process, and to further reduce the research cost, development cycle and production cost thereof.
    Type: Grant
    Filed: August 29, 2011
    Date of Patent: April 16, 2013
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventors: Yanxue Zhang, Chengming He
  • Patent number: 8421972
    Abstract: There is provided a liquid crystal display device of high picture quality with high brightness and small display unevenness. A vertical alignment type liquid crystal display device which has a plurality of pixels includes: a first electrode which includes, in each of the plurality of pixels, a plurality of first branch portions extending in a first direction and a plurality of second branch portions extending in a second direction that is different from the first direction; a second electrode disposed so as to oppose the first electrode; and a liquid crystal layer interposed between the first electrode and the second electrode, wherein a width of each of the plurality of first branch portions and the plurality of second branch portions is in a range not less than 1.4 ?m and not more than 8.0 ?m.
    Type: Grant
    Filed: December 11, 2008
    Date of Patent: April 16, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Hiroyuki Ohgami, Yoshito Hashimoto, Masakazu Shibasaki, Yuichi Iyama, Masumi Kubo, Masayuki Soga
  • Patent number: RE44470
    Abstract: A first electrode 14 provided in a liquid crystal display device of a vertical alignment mode includes, for each picture element region, a lower conductive layer 11, a dielectric layer 12 covering the lower conductive layer 11, and an upper conductive layer 13 provided on one side of the dielectric layer 12 which is closer to a liquid crystal layer 30. The upper conductive layer 13 includes an upper layer opening 13a, and the lower conductive layer 11 includes a lower layer opening 11a, thus forming first, second and third regions (R1, R2, R3) having gradually decreasing electric field strengths. Liquid crystal molecules 30a of the liquid crystal layer 30 in an orientation-regulating region T1 in which the first, second and third regions are arranged in this order in a predetermined direction change the orientation direction thereof so that they are inclined in a single direction in the presence of an applied voltage.
    Type: Grant
    Filed: November 11, 2010
    Date of Patent: September 3, 2013
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Fumikazu Shimoshikiryo