Alignment Layer Patents (Class 349/123)
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Patent number: 8767153Abstract: The invention relates to a process of preparing an alignment film for the alignment of liquid crystals (LCs) or reactive mesogens (RMs), by a direct particle beam deposition process, to an alignment film obtainable by said process, to the use of said alignment film for the alignment of LCs or RMs, especially in the form of thin layers, to a multilayer comprising said alignment film and one or more LC and/or RM layers, and to the use of the alignment film and multilayer in optical, electronic and electrooptical applications.Type: GrantFiled: February 3, 2009Date of Patent: July 1, 2014Assignee: Merck Patent GmbHInventors: Oleg Yaroshchuk, Eugene Telesh, Aleksander Khokhlov
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Publication number: 20140176888Abstract: The present invention provides a liquid crystal display device which enables to reduce the occurrence of image sticking without deteriorating the electric properties, and a method for manufacturing a liquid crystal display device which enables to reduce the occurrence of image sticking. The liquid crystal display device of the present invention includes a pair of substrates, a liquid crystal layer disposed between the pair of substrates, an alignment film formed on at least one of the pair of substrates, and a polymer layer formed on the alignment film and controlling the alignment of liquid crystal molecules which are adjacent to the polymer layer, wherein the polymer layer is formed by polymerization of one or more kinds of monomers added in the liquid crystal layer, and at least one of the one or more kinds of monomers is a monomer polymerizable upon exposure to visible light.Type: ApplicationFiled: July 6, 2012Publication date: June 26, 2014Applicant: SHARP KABUSHIKI KAISHAInventors: Hiroyuki Hakoi, Masanobu Mizusaki, Koichi Miyachi
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Patent number: 8760614Abstract: This invention relates to an optical element for the purpose of identification and/or prevention of forgery or copying, including at least one layer with anisotropic optical properties, wherein the anisotropic optical properties are patterned, characterized in that the pattern represents biometric information. In addition, this invention relates to a method for the preparation of an optical element for the purpose of identification and/or prevention of forgery or copying.Type: GrantFiled: March 6, 2009Date of Patent: June 24, 2014Assignee: Rolic Ltd.Inventors: Fabien Xavier Delbaere, Hubert Seiberle, Peggy Studer
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Patent number: 8758871Abstract: A liquid crystal display is provided which is capable of reducing the occurrence of defective display due to variations in the initial alignment direction of a liquid crystal alignment control film in a liquid crystal display of an IPS scheme, realizing the stable liquid crystal alignment, providing excellent mass productivity, and having high image quality with a higher contrast ratio. The liquid crystal display has a liquid crystal layer disposed between a pair of substrates, at least one of the substrates being transparent, and an alignment control film formed between the liquid crystal layer and the substrate. At least one of the alignment control films 109 comprises photoreactive polyimide and/or polyamic acid provided with an alignment control ability by irradiation of substantially linearly polarized light.Type: GrantFiled: August 17, 2011Date of Patent: June 24, 2014Assignees: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd.Inventors: Yasushi Tomioka, Hidetoshi Abe, Katsumi Kondo
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Publication number: 20140168587Abstract: A liquid crystal display device includes a first substrate and a second substrate. The first substrate includes a gate line and an auxiliary capacitance line extending in a first direction, a source line extending in a second direction orthogonally crossing the first direction, and a pixel electrode having a main pixel electrode arranged on the auxiliary capacitance line and extending in the first direction. The second substrate includes a common electrode having a main common electrode arranged above the gate line and extending in the first direction. A liquid crystal layer is held between the first substrate and the second substrate having liquid crystal molecules. The liquid crystal molecules are initially aligned in the first direction in a splay alignment state between the first substrate and the second substrate in a state where electric field is not formed between the pixel electrode and the common electrode.Type: ApplicationFiled: February 21, 2014Publication date: June 19, 2014Applicant: JAPAN DISPLAY INC.Inventor: Jin HIROSAWA
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Publication number: 20140168582Abstract: A liquid crystal display device includes a lower panel having a lower substrate. A pixel electrode is formed on the lower substrate and includes a partial plate electrode and a plurality of minute branch electrodes extending from the partial plate electrode. A lower layer is formed on the lower substrate and below the pixel electrode and includes an inclined portion. An upper panel includes an upper substrate facing the lower substrate and a common electrode formed on the upper substrate. A liquid crystal layer is positioned between the lower panel and the upper panel, in which a part of the inclined portion is overlapped with a part of the minute branch electrode.Type: ApplicationFiled: September 4, 2013Publication date: June 19, 2014Applicant: SAMSUNG DISPLAY CO., LTD.Inventors: Hak Sun CHANG, Jang Wi RYU, Jae-Soo JANG, Ki Chul SHIN
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Publication number: 20140168586Abstract: Several aspects of the present invention provide a liquid crystal composition capable of shortening the takt time and achieving excellent display qualities, and a liquid crystal display device and a method for producing a liquid crystal display device which use the liquid crystal composition. The liquid crystal composition of several aspects of the present invention includes a liquid crystal material and one or more kinds of radical polymerizable monomers, at least one kind of the radical polymerizable monomers being a compound generating radicals through a self-cleavage reaction by exposure to light and having at least two radical polymerizable groups.Type: ApplicationFiled: March 8, 2012Publication date: June 19, 2014Applicant: Sharp Kabushiki KaishaInventors: Masanobu Mizusaki, Yuichiro Yamada, Satoshi Enomoto, Yuki Hara, Hideo Kikuchi
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Publication number: 20140168589Abstract: The present invention provides a liquid crystal display panel and a liquid crystal display device having excellent display quality, with reduced string-like defects that occur in display pixels. The liquid crystal display panel of the present invention includes a pair of substrates and a liquid crystal layer interposed between the pair of substrates, wherein at least one of the pair of substrates includes a photo-alignment film, the photo-alignment film aligns liquid crystal molecules horizontally to a main surface of the at least one of the pair of substrates, and the photo-alignment film has a film thickness of 50 nm or more.Type: ApplicationFiled: August 23, 2012Publication date: June 19, 2014Applicant: Sharp Kabushiki KaishaInventors: Isamu Miyake, Koichi Miyachi
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Publication number: 20140168588Abstract: A liquid crystal display device including an array of pixels each including first and second substrates, first and second electrodes formed on opposing surfaces of the first and second substrates, which surfaces are positioned opposite to the second and first substrates, first and second alignment restricting portions provided in the first and second electrodes, first and second alignment films covering respectively the first and second electrodes, the first and second alignment restricting portions, and the opposing surfaces of the first and second substrates, and a liquid crystal layer formed between the first and second alignment films and containing liquid crystal molecules, wherein, in each pixel, major axes of a group of liquid crystal molecules are positioned substantially in the same imaginary plane in a predetermined overlapped region between the first and second electrodes, and a pre-tilt is given to the liquid crystal molecules by at least the first alignment film.Type: ApplicationFiled: February 24, 2014Publication date: June 19, 2014Applicant: Sony CorporationInventors: Shunichi Suwa, Masashi Miyakawa, Masahiko Nakamura, Tadaaki Isozaki
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Patent number: 8755013Abstract: A liquid crystal display device includes an array substrate, an opposite substrate and a liquid crystal display layer. The array substrate includes a pixel electrode and a lower reactive mesogen layer. The pixel electrode includes a plurality of slit portions disposed on a plurality of domains in different directions. The lower reactive mesogen layer is disposed on the pixel electrode to induce an inclined direction of liquid crystal molecules. The opposite substrate includes an upper substrate. An upper reactive mesogen layer is disposed on a common electrode of the opposite substrate. The liquid crystal layer includes liquid crystal molecules arranged to have a pretilt angle between a surface of the lower reactive mesogen layer and a surface of the upper reactive mesogen layer.Type: GrantFiled: April 6, 2009Date of Patent: June 17, 2014Assignee: Samsung Display Co., Ltd.Inventors: Myeong-Ha Kye, Jun-Hyup Lee, Jae-Jin Lyu, Seung-Beom Park, Jong-Ho Son, Ji-Won Sohn, Hoon Kim, Min-Goo Seok, Jun-Hee Na, Min-Jae Kim, Su-Han Woo
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Publication number: 20140160413Abstract: An electro-optical device includes a first substrate, a second substrate and a liquid crystal, and has a display region and a peripheral region. The peripheral region of the first substrate has a peripheral electrode and a first orientation film covering the peripheral electrode. Then, since the density of first orientation film in the display region is different from the density of the first orientation film in the peripheral region, it is possible to efficiently capture ionic impurities present in the liquid crystal.Type: ApplicationFiled: December 5, 2013Publication date: June 12, 2014Applicant: SEIKO EPSON CORPORATIONInventor: Masakazu Nishida
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Publication number: 20140160412Abstract: A lateral electric field type liquid crystal display (LCD) device comprises a first substrate formed with a plurality of first electrodes and at least one second electrode, a second substrate and a liquid crystal layer disposed between the two substrates. Each first electrode comprises an array of electrode segments and every adjacent first and second electrodes have a minimum spacing smaller than a maximum spacing in between. Each second electrode is a strip electrode or also comprises an array of electrode segments. Each electrode segment is a V-shape electrode rotated with an angle or an electrode segment having at least an extruded portion and at least an intruded portion. The array of electrode segments may be a sinusoidal electrode. The first and second electrodes are oriented in parallel with or at a specific angle with respect to the data line of the lateral electric field type LCD device.Type: ApplicationFiled: December 7, 2012Publication date: June 12, 2014Applicant: VastView Technology Inc.Inventors: Cheng-Chung Peng, Yuh-Ren Shen, Hsin-Ta Lee
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Patent number: 8747967Abstract: A liquid crystal display according to an exemplary embodiment of the present invention includes a first substrate and a second substrate facing each other, an alignment layer disposed on at least one of the first substrate or the second substrate, the alignment layer including at least one vertical alignment monomer and a photo-alignment layer separated from the at least one vertical alignment monomer, and a liquid crystal layer disposed between the first substrate and the second substrate. The photo-alignment layer includes a main chain and at least one side chain connected to the main chain, and the at least one side chain includes at least one vertical photo-alignment material.Type: GrantFiled: March 28, 2012Date of Patent: June 10, 2014Assignee: Samsung Display Co., Ltd.Inventors: Suk Hoon Kang, Jun Woo Lee, Baek Kyun Jeon, Kyoung Tae Kim, Soo-Ryun Cho
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Patent number: 8749466Abstract: A mono domain vertical alignment type liquid crystal display apparatus to be multiplex driven is provided whose display uniformity at a large pretilt angle (near 90°) is improved. Waveform A is applied to a liquid crystal cell of a mono domain vertical alignment type, the waveform A having a duty not lower than 4 and a frame frequency of f. The frame frequency f is determined from a pretilt angle ?p, and is a frequency not lower than 60 Hz at a pretilt angle of 88.5°??p<89.6° or a frequency not lower than [120×(?p?89.6)+60] Hz at a pretilt angle of 89.6°??p?89.9°.Type: GrantFiled: May 2, 2008Date of Patent: June 10, 2014Assignee: Stanley Electric Co., Ltd.Inventor: Yoshihisa Iwamoto
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Patent number: 8749741Abstract: A liquid crystal display device including a first substrate, a first alignment film formed over the first substrate, a second substrate, a second alignment film formed over the second substrate, a liquid crystal layer sandwiched between the first alignment film and the second alignment film, and a projecting portion formed over the second substrate. The first and second alignment films are both made of a photo-decomposition-type material. A film thickness “d2” of the second alignment film over the projecting portion and a film thickness “d1” of a portion of the first alignment film facing the projecting portion satisfy a formula (1) and a formula (2): 0 nm<d2<30 nm??(1) d2<d1??(2).Type: GrantFiled: April 29, 2013Date of Patent: June 10, 2014Assignees: Japan Display Inc., Panasonic Liquid Crystal Display Co., Ltd.Inventors: Hidehiro Sonoda, Chikae Matsui, Noboru Kunimatsu
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Publication number: 20140152949Abstract: A liquid crystal display including a first substrate; a second substrate facing the first substrate; a first field generating electrode disposed on the first substrate; a second field generating electrode disposed on the second substrate; and a liquid crystal layer disposed between the first substrate and the second substrate, the liquid crystal layer including a liquid crystal and an alignment assistant, wherein the alignment assistant includes a mesogen and two or more photo-polymerizable groups.Type: ApplicationFiled: February 4, 2014Publication date: June 5, 2014Applicant: Samsung Display Co., LTD.Inventors: Jun-Hyup LEE, Jae-Jin LYU
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Patent number: 8743332Abstract: In one embodiment, a first substrate includes a pixel electrode having a first main electrode in a belt-like shape extending along a first cross line direction which crosses at an acute angle in a counterclockwise direction with respect to an initial alignment direction of liquid crystal molecules, and a second main electrode in the belt-like shape extending along a second cross line direction which crosses at an acute angle in a clockwise direction with respect to the initial alignment direction of the liquid crystal molecules. A second substrate includes a counter electrode having a pair of third main electrodes in the belt-like shape arranged above a pair of regions sandwiching the first main electrode extending along a first cross line direction and a pair of fourth main electrodes in the belt-like shape arranged above a pair of regions sandwiching the second main electrode extending along the second cross line direction.Type: GrantFiled: December 29, 2011Date of Patent: June 3, 2014Assignee: Japan Display Inc.Inventors: Keisuke Takano, Arihiro Takeda, Takashi Sasabayashi, Nobuko Fukuoka, Yusuke Morita, Jin Hirosawa, Hitomi Hasegawa, Yoshitaka Yamada, Keiji Tago, Hirokazu Morimoto
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Patent number: 8741398Abstract: The present invention provides a liquid crystal panel and an alignment film thereof, and the alignment film is made of a modified polyimide which has conjugated double bond at side chain. Resistance value of the alignment film is less than the resistance value of a liquid crystal material of the liquid crystal panel by properties of the conjugated double bond that can reduce the resistance value of a prior art polyimide. In addition, improving the imidization ratio of a modified polyimide alignment film is important. The present invention is conducted the charged ion from liquid crystal layer to the alignment film by the conjugated double bond of the modified polyimide at the side chain to prevent the increase in the ion density of the liquid crystal in part of this area, and improve the problem of image sticking.Type: GrantFiled: October 21, 2011Date of Patent: June 3, 2014Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.Inventors: Chung-Ching Hsieh, Cheng-ming He
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Publication number: 20140139794Abstract: Provided is a liquid crystal display device reducing display unevenness and image sticking even though employing a PSA polymerization step in which monomers are added to a liquid crystal layer. The liquid crystal display device includes a pair of substrates, at least one of the substrates including an alignment film and a structure consisting of an organic insulating material; a polymer layer that is formed on the alignment film to control the alignment of liquid crystal molecules; and a liquid crystal layer containing a liquid crystal material, the layer being placed between the pair of substrates, wherein the polymer layer is formed by polymerization of one or more kinds of radical polymerizable monomers contained in the liquid crystal layer, and at least one kind of the radical polymerizable monomers includes a structure which generates radicals through self-cleavage reaction by light irradiation and two or more radical polymerizable groups.Type: ApplicationFiled: July 27, 2012Publication date: May 22, 2014Applicant: Sharp Kabushiki KaishaInventors: Yasuyuki Ohnishi, Masanobu Mizusaki
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Patent number: 8730439Abstract: 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: GrantFiled: August 3, 2011Date of Patent: May 20, 2014Assignee: Sharp Kabushiki KaishaInventors: Iichiro Inoue, Hiroyuki Hakoi, Shinichi Terashita, Koichi Miyachi
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Patent number: 8730446Abstract: A liquid crystal display panel (1) includes a TFT substrate (10), a CF substrate (20) facing the TFT substrate (10), a liquid crystal layer (25) provided between the TFT substrate (10) and the CF substrate (20), an alignment film configured to control alignment of the liquid crystal layer (25), and a sealing member (26) sandwiched between the TFT substrate (10) and the CF substrate (20) and formed in the shape of a frame surrounding the liquid crystal layer (25). In a region (35) where the sealing member (26) is to be provided, a metal pattern (2) is provided which is configured to reflect infrared light emitted from a Fourier transform infrared spectrometer toward the Fourier transform infrared spectrometer in order to determine the presence or absence of the alignment film in the region (35).Type: GrantFiled: September 24, 2010Date of Patent: May 20, 2014Assignee: Sharp Kabushiki KaishaInventor: Takafumi Hayama
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Patent number: 8728952Abstract: Provided is a coating method of an alignment film, including: providing a board, having a substrate, the substrate forming an alignment liquid coating area thereon; forming a barrier structure around the alignment liquid coating area; coating an alignment liquid in the alignment liquid coating area, wherein the barrier structure blocks the alignment liquid to diffuse outside the alignment liquid coating area; and curing the alignment liquid to form an alignment film. The present invention may assure that the formed alignment film can not affect other areas adjacent to the alignment liquid coating area.Type: GrantFiled: August 31, 2012Date of Patent: May 20, 2014Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.Inventor: MeiNa Zhu
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Publication number: 20140132901Abstract: A display panel includes a first substrate, a second substrate, and a liquid crystal layer disposed between the first and second substrates. The first substrate includes a recess portion recessed into the first substrate from the surface of a common electrode and a first alignment barrier protruded from the recess portion in an area corresponding to at least a portion of an end portion of a first alignment layer.Type: ApplicationFiled: March 15, 2013Publication date: May 15, 2014Applicant: SAMSUNG DISPLAY CO., LTD.Inventors: Swae-Hyun KIM, Je Hyeong PARK, YoungGoo SONG, Kipyo HONG, Sunghee HONG, Sang Woo WHANGBO
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Publication number: 20140132899Abstract: The present invention provides a photosensitive monomer, a liquid crystal composition containing the photosensitive monomer and a vertical alignment liquid crystal panel. The range of absorption wavelength of the photosensitive monomer of the present invention overlaps with the range of an ultraviolet lamp by increasing the length of a hard core. Thus, comparing with the conventional reactive monomer (RM), the photosensitive monomer of the present invention has a faster curing speed to solve the image sticking issue due to a high monomer residue.Type: ApplicationFiled: November 19, 2012Publication date: May 15, 2014Applicant: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventor: Chung-Ching Hsieh
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Publication number: 20140132900Abstract: The present invention provides a photosensitive monomer of which hydrogen atoms of benzene ring of a hard core are substituted by fluorine atoms to increase the electronegativity of the hard core, so that the curing voltage of the curing process is reduced. The photosensitive monomer of the present invention not only reduces the curing voltage and curing time of the curing process of liquid crystal panels, but also increases the pretilt angle of liquid crystal molecules to reduce the response time of a liquid crystal display, so that image sticking and MURA phenomenon are reduced.Type: ApplicationFiled: November 15, 2012Publication date: May 15, 2014Applicant: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO LTDInventors: Sikun Hao, Chung-Ching Hsieh, Chung Yi Chiu
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Publication number: 20140125934Abstract: An image display device includes a liquid crystal lens on a display surface side of a display panel. The liquid crystal lens includes a first substrate, a second substrate, a liquid crystal layer interposed between the first substrate and the second substrate, a first alignment film and a second alignment film formed on an interface of the liquid crystal layer. The first alignment film and the second alignment film are alignment films subjected to a rubbing treatment so that liquid crystal molecules in the liquid crystal layer are aligned in a 90° twist in a first direction by the provision of a pretilt angle. The liquid crystal molecules are aligned, by the addition of a chiral agent to the liquid crystal layer, in a 90° twist in a second direction opposite to the first direction in a state where an electric field is not applied.Type: ApplicationFiled: November 1, 2013Publication date: May 8, 2014Applicant: Japan Display Inc.Inventors: Tomohiko NAGANUMA, Shinichiro OKA
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Patent number: 8717522Abstract: An apparatus for forming an alignment film and a method for fabricating a liquid crystal display panel using the same are disclosed. A steam inspecting unit for inspecting a defective alignment film is disposed for two lines of rubbing equipment, so that a facility investment expense can be reduced and a space of a clean room can be effectively utilized. The apparatus for forming an alignment film comprises a rubbing equipment comprising at least one rubbing unit; and an alignment film inspecting unit installed between the two lines of rubbing equipment and inspecting an alignment film formed on a substrate.Type: GrantFiled: December 27, 2005Date of Patent: May 6, 2014Assignee: LG Display Co., Ltd.Inventor: Byoung Chul Choi
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Publication number: 20140118644Abstract: A liquid crystal (LC) lens includes first and second substrates, an LC layer disposed therebetween, and a plurality of first and second electrode structures. Each electrode structure has a plurality of first, second, third and fourth electrodes spaced-apart and alternately arranged along a first direction, where the first and second electrodes are disposed between the first substrate and the LC layer, while the third and fourth electrodes are disposed between the second substrate and the LC layer. In each first electrode structure, each of the first and second electrodes and a corresponding one of the third and fourth electrodes are aligned at a left tilted angle, while in each second electrode structure, each of the first and second electrodes and a corresponding one of the third and fourth electrodes are aligned at a right tilted angle. The first and second electrode structures are alternately arranged along a second direction.Type: ApplicationFiled: October 25, 2012Publication date: May 1, 2014Applicant: AU OPTRONICS CORPORATIONInventors: Sheng-Chi Liu, Yung-Sheng Tsai, Jen-Lang Tung
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Publication number: 20140118671Abstract: The present invention provides a liquid crystal display panel and a liquid crystal display device each of which exhibits a sufficiently high response speed and an excellent transmittance. The liquid crystal display panel of the present invention includes a first substrate; a second substrate; and a liquid crystal layer disposed between the substrates, the first substrate and the second substrate each comprising an electrode, the electrode of the second substrate including a pair of comb-shaped electrodes and a planar electrode, the liquid crystal layer containing liquid crystal molecules which are inclined from an orthogonal direction to the main faces of the substrates between the pair of comb-shaped electrodes in a plan view of the main faces of the substrates when a voltage lower than a threshold voltage is applied.Type: ApplicationFiled: May 31, 2012Publication date: May 1, 2014Applicant: SHARP KABUSHIKI KAISHAInventors: Iori Aoyama, Takao Imaoku, Yuichi Iyama, Takatomo Yoshioka, Kazuhiko Tsuda
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Publication number: 20140118672Abstract: The present invention provides a polymerizable monomer, a liquid crystal composition containing the polymerizable monomer and a vertical alignment liquid crystal panel. The polymerizable monomer which the present invention provides may generate free radicals more easily under the UV exposure, so as to solve the RM residue due to the improvement of the curing ability of the RM and thus improve the image sticking issue of the liquid crystal panel.Type: ApplicationFiled: November 14, 2012Publication date: May 1, 2014Applicant: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventor: Chung-Ching Hsieh
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Publication number: 20140118639Abstract: The present display device includes a liquid crystal panel having a liquid crystal layer between an array substrate and a facing substrate. The array substrate has an electrode layer having an upper electrode and a lower electrode facing each other in a Z direction, and an opening including a plurality of slits extending in an X direction is formed in the upper electrode and the lower electrode. The liquid crystal layer is provided on the electrode layer, liquid crystal molecules in vicinity regions on one side and the other side of the opening which face each other in a width direction of each slit are oriented as rotating in reverse to each other, and the facing substrate has a conductive layer.Type: ApplicationFiled: October 21, 2013Publication date: May 1, 2014Applicant: Japan Display Inc.Inventor: Toshiharu Matsushima
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Patent number: 8711315Abstract: An LCD includes a first substrate, a second substrate, a liquid crystal layer between the first and second substrates, first and second alignment films respectively disposed on the first and second substrates. The first substrate comprises multiple scanning lines and multiple data lines intercrossed with the multiple scanning lines to define multiple pixel areas. Each pixel area comprises multiple electrically interconnected first electrodes and multiple electrically interconnected second electrodes. The first electrodes and the second electrodes are disposed on different layers and mutually intersected to define multiple sub-pixel areas. Each sub-pixel area further comprises two protrusion-shaped patterns facing each other on two adjacent first electrodes where the first electrodes and the second electrodes are not overlapped.Type: GrantFiled: July 26, 2012Date of Patent: April 29, 2014Assignee: Infovision Optoelectronics(Kunshan)Co., Ltd.Inventors: Te-Chen Chung, Yongqian Li, Wenjun Dai, Chia-Te Liao
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Publication number: 20140111716Abstract: A liquid crystal display panel having pixel regions includes a light shielding layer having opening regions corresponding to the pixel regions, first pixel electrodes and second pixel electrodes. Each first pixel electrode includes strip first pixel electrode patterns. Each second pixel electrode includes strip second pixel electrode patterns. Each opening region includes sub regions. Each of the strip first pixel electrode patterns and its neighboring strip second pixel electrode pattern in each of the sub regions are separated by an electrode spacing. Electrode spacings in different sub regions are different. An area of all the sub regions with the electrode spacings less than or equal to 12 micrometers accounts for less than or equal to 35% area of each opening region. An area of the other sub regions with the electrode spacings greater than 12 micrometers accounts for more than or equal to 65% area of each opening region.Type: ApplicationFiled: March 1, 2013Publication date: April 24, 2014Applicant: AU OPTRONICS CORPORATIONInventors: Sau-Wen Tsao, Mei-Ju Lu, Cho-Yan Chen, Tien-Lun Ting
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Publication number: 20140111752Abstract: There is provided a liquid crystal display device including a liquid crystal display element including a first alignment film and a second alignment film provided on opposing surfaces of a pair of substrates, and a liquid crystal layer arranged between the first alignment film and the second alignment film and including crystal molecules having negative dielectric constant anisotropy. At least the first alignment film includes a compound in which a polymer compound having a first side chain and a second side chain is crosslinked or polymerized. The first side chain has a crosslinkable functional group or a polymerizable functional group. The second side chain has a structure inducing dielectric anisotropy. The liquid crystal molecules are pretilted by the first alignment film.Type: ApplicationFiled: March 26, 2013Publication date: April 24, 2014Applicant: Sony CorporationInventor: Sony Corporation
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Publication number: 20140111753Abstract: A liquid crystal display device includes a plurality of pixels arranged in a matrix, each pixel having: first and second substrates; a first electrode formed on an opposing face of the first substrate opposing the second substrate; a first alignment film covering the first electrode and the opposing face of the first substrate; a second electrode formed on the opposing face of the second substrate opposing the first substrate; a second alignment film covering the second electrode and the opposing face of the second substrate, and a liquid crystal layer which is provided between the first alignment film and the second alignment film and includes liquid crystal molecules, where a pretilt is imparted on the liquid crystal molecules, a plurality of uneven portions is formed on the first electrode, and a width of a portion of the convex portions provided on the first electrode becomes narrower toward the tip portion.Type: ApplicationFiled: October 11, 2013Publication date: April 24, 2014Applicant: Sony CorporationInventors: Chikashi Kobayashi, Shunichi Suwa, Masashi Miyakawa
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Publication number: 20140111754Abstract: The present invention provides a liquid crystal display device capable of reducing image sticking phenomena and of maintaining the voltage holding ratio, the liquid crystal display device being produced using photo-alignment technology and PSA technology in combination.Type: ApplicationFiled: June 20, 2012Publication date: April 24, 2014Applicant: Sharp Kabushiki KaishaInventors: Toshiro Matsumoto, Masanobu Mizusaki, Masayuki Kanehiro, Yuichi Kawahira
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Patent number: 8704983Abstract: The invention discloses an LCD panel, an LCD device, and a manufacturing method thereof. The LCD panel comprises substrate(s); the substrate is provided with an oriented film and a frame adhesive, and the frame adhesive is formed on the periphery of the oriented film; the oriented film comprises an ordinary oriented film covering the effective display area and a porous oriented film arranged around the edge of the ordinary oriented film for adsorbing the impurities in the frame adhesive area. The oriented film in the LCD panel of the invention comprises a porous oriented film; the porous oriented film can absorb the foreign particles produced by the frame adhesive to prevent the impurities in the frame adhesive area from permeating into the effective display area, can effectively prevent the impurities produced by the frame adhesive from permeating into the effective display area to become liquid crystal pollutants, and can avoid pixel to produce stains or non-uniform display.Type: GrantFiled: December 6, 2011Date of Patent: April 22, 2014Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.Inventor: Yu Song
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Patent number: 8704977Abstract: The invention provides a liquid crystal cell and method thereof. The cell comprises two opposed substrates and a surfactant-free lyotropic chromonic liquid crystals (LCLC) material disposed therebetween. By using an ammonium compound with LCLC or surface treatment on the substrates, the alignment of the LCLC material can be manipulated as a homeotropic bulk alignment; or a hybrid bulk alignment in which the LCLC alignment is changed from homeotropic bulk alignment in the vicinity of one substrate to planar alignment in the vicinity of another substrate. The cell can be used in biosensing, detection and amplification of ligands, optical devices, and photovoltaics etc.Type: GrantFiled: March 5, 2008Date of Patent: April 22, 2014Assignee: Kent State UniversityInventors: Oleg D. Lavrentovich, Yuriy A. Nastyshyn, Vassili G. Nazarenko, Roman M. Vasyuta, Oleksandr P. Boiko, Ye Yin, Sergij V. Shiyanovskii
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Publication number: 20140104553Abstract: A liquid crystal display device includes first and second substrates, at least one of which is transparent, a liquid crystal layer which is disposed between the first and second substrates, a pixel electrode and a common electrode which are formed on one of the first and second substrates and which apply an electric field to the liquid crystal layer, a plurality of active elements which is connected to the pixel electrode and the common electrode, an alignment film which is disposed on at least one of the first and second substrates and has one surface contacting the liquid crystal layer, and an underlying layer which is disposed on at least one of the first and second substrates and contacts the other surface of the alignment film. The pixel electrode is laminated on the common electrode having a plane shape through an isolation film.Type: ApplicationFiled: December 13, 2013Publication date: April 17, 2014Applicants: Panasonic Liquid Crystal Display Co., Ltd., Japan Display Inc.Inventors: Yasuo Imanishi, Masaki Matsumori, Yasushi Tomioka
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Publication number: 20140104554Abstract: A liquid crystal display device has a liquid crystal display panel including pixels each having an active device, a pixel electrode, a common electrode and a liquid crystal layer arranged in a dot matrix array. The liquid crystal display panel has a first substrate, a second substrate, and a liquid crystal layer provided between the first substrate and the second substrate. The first substrate has the active device, the pixel electrode, the common electrode and a first alignment film. The second substrate has a second alignment film. The first alignment film and the second alignment film are respectively a photo alignment film formed by irradiating a photo decomposition type insulating film with light. The second alignment film has a thickness of at least 10 nm and no greater 50 nm and is thinner than the first alignment film.Type: ApplicationFiled: December 16, 2013Publication date: April 17, 2014Applicants: Panasonic Liquid Crystal Display Co., Ltd., Japan Display Inc.Inventors: Hidehiro SONODA, Chikae MATSUI, Noboru KUNIMATSU, Yuko MATSUMOTO
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Publication number: 20140104548Abstract: The invention provides a liquid crystal display (LCD) device comprising a first substrate, a first electrode, a second substrate, a liquid crystal layer, a main spacer and an auxiliary spacer. The first electrode is disposed on the first substrate and has a first thickness and a second thickness, wherein the first thickness is smaller than the second thickness. The second substrate and the first substrate are disposed oppositely. The liquid crystal layer is disposed between the first substrate and the second substrate. The main spacer is disposed between the first substrate and the second substrate and corresponding to a part of the first electrode having the first thickness. The auxiliary spacer is disposed between the first substrate and the second substrate and corresponding to a part of the first electrode having the second thickness.Type: ApplicationFiled: October 8, 2013Publication date: April 17, 2014Applicant: Innolux CorporationInventors: Ching-Che Yang, Fu-Cheng Chen, Yu-Heng Yang
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Patent number: 8698986Abstract: The present invention provides a liquid crystal display device capable of suppressing alignment disorder of liquid crystal and having satisfactory VR characteristics. According to the present invention, a liquid crystal display device includes a pair of substrates and a liquid crystal layer interposed between the pair of substrates, the liquid crystal display device having a reflective region and a transmissive region. One of the pair of substrates includes a longitudinal projecting portion and a liquid-crystal-layer-thickness adjusting portion for setting a liquid crystal layer thickness in the reflective region to be smaller than a liquid crystal layer thickness in the transmissive region. At least a part of the projecting portion is arranged without a gap along at least a part of a step portion of the liquid-crystal-layer-thickness adjusting portion.Type: GrantFiled: October 27, 2009Date of Patent: April 15, 2014Assignee: Sharp Kabushiki KaishaInventors: Katsuya Ogawa, Kazuyoshi Fujioka, Tomoo Furukawa, Masaaki Saitoh
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Patent number: 8696950Abstract: A liquid crystal display device including an array of pixels each including first and second substrates, first and second electrodes formed on opposing surfaces of the first and second substrates, which surfaces are positioned opposite to the second and first substrates, first and second alignment restricting portions provided in the first and second electrodes, first and second alignment films covering respectively the first and second electrodes, the first and second alignment restricting portions, and the opposing surfaces of the first and second substrates, and a liquid crystal layer formed between the first and second alignment films and containing liquid crystal molecules, wherein, in each pixel, major axes of a group of liquid crystal molecules are positioned substantially in the same imaginary plane in a predetermined overlapped region between the first and second electrodes, and a pre-tilt is given to the liquid crystal molecules by at least the first alignment film.Type: GrantFiled: June 22, 2011Date of Patent: April 15, 2014Assignee: Sony CorporationInventors: Shunichi Suwa, Masashi Miyakawa, Masahiko Nakamura, Tadaaki Isozaki
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Patent number: 8691349Abstract: A liquid crystal display panel including a first substrate, a second substrate, a liquid crystal layer, and a polymer stabilized alignment layer is provided. The second substrate is disposed opposite to the first substrate. The liquid crystal layer is disposed between the first substrate and the second substrate. The polymer stabilized alignment layer is disposed between the first substrate and the liquid crystal layer, and an average surface roughness of the polymer stabilized alignment layer is greater than or equal to 10 nm.Type: GrantFiled: December 7, 2012Date of Patent: April 8, 2014Assignee: Au Optronics CorporationInventors: Cheng-Jung Chiang, Chih-Ho Chiu, Chung-Ching Hsieh, Chia-Hsuan Pai, Bo-Hsin Huang, Te-Sheng Chen
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Patent number: 8691350Abstract: An object of the present invention is to provide a liquid crystal display device in which a risk of generation of a image sticking is reduced. A liquid crystal display device (100) of the present invention includes a pair of glass substrates (11) and (21), a liquid crystal layer (30) provided between the pair of glass substrates (11) and (21), an alignment layer (23) provided between the liquid crystal layer (30) and at least one of the pair of glass substrates (11) and (21), and an alignment sustaining layer (24) for defining a direction in which liquid crystal molecules constituting the liquid crystal layer (30) are inclined, the alignment sustaining layer (24) being provided between the alignment layer (23) and the liquid crystal layer (30), the alignment layer (23) and the alignment sustaining layer (24) being covalently bound to each other.Type: GrantFiled: April 28, 2010Date of Patent: April 8, 2014Assignee: Sharp Kabushiki KaishaInventors: Masanobu Mizusaki, Youhei Nakanishi
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Patent number: 8687163Abstract: The present invention provides a display panel that can improve the adhesion strength of a sealing member and that can reduce moisture permeation caused by an alignment film without performing a treatment to remove the alignment film. A display panel according to the present invention is a display panel having a pair of substrates attached to each other via a sealing member. At least one of the pair of substrates has a configuration in which a transparent resin film and an alignment film are laminated. In the display panel, a side face of an edge of the transparent resin film has a reverse tapered shape; the alignment film is separated at the side face of the edge; and the transparent resin film and the sealing member are attached to each other without having the alignment film therebetween.Type: GrantFiled: August 9, 2010Date of Patent: April 1, 2014Assignee: Sharp Kabushiki KaishaInventor: Nobuo Sasaki
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Patent number: 8687164Abstract: A liquid crystal display device includes an illuminator and a liquid crystal panel for performing displaying by using light which is emitted from the illuminator. The liquid crystal panel includes a pair of substrates, a liquid crystal layer provided between the pair of substrates, and a pair of alignment films provided on sides of the pair of substrates facing the liquid crystal layer. At least one of the alignment films is a photo-alignment film which is imparted with an orientation regulating force through a photo-alignment treatment, and the illuminator includes a light source causing primary generation of at least blue light, among other light which is used for displaying.Type: GrantFiled: July 25, 2012Date of Patent: April 1, 2014Assignee: Sharp Kabushiki KaishaInventor: Koichi Miyachi
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Patent number: 8685502Abstract: A liquid crystal display including a first substrate; a second substrate facing the first substrate; a first field generating electrode disposed on the first substrate; a second field generating electrode disposed on the second substrate; and a liquid crystal layer disposed between the first substrate and the second substrate, the liquid crystal layer including a liquid crystal and an alignment assistant, wherein the alignment assistant includes a mesogen and two or more photo-polymerizable groups.Type: GrantFiled: April 1, 2009Date of Patent: April 1, 2014Assignee: Samsung Display Co., Ltd.Inventors: Jun-Hyup Lee, Jae-Jin Lyu
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Publication number: 20140085579Abstract: A method of manufacturing LCOS panel is disclosed. The method includes: providing a silicon substrate on which at least one conductive pad is formed and a transparent substrate on which a transparent electrode layer is formed; dispensing or coating a sealing material on a predetermined area of the silicon substrate or the transparent substrate; bonding the silicon substrate with the transparent substrate; singulating the bonded silicon substrate and transparent substrate such that at least one space is provided between the silicon substrate and the transparent substrate on an outer side of the sealing material and a part of the transparent electrode layer is exposed in the space; and dispensing a conductive adhesive into the space to connect the transparent electrode layer to the conductive pad. The method is able to achieve a smaller-size of the LCOS panels, a higher production yield and a lower process requirement.Type: ApplicationFiled: April 18, 2013Publication date: March 27, 2014Applicant: OMNIVISION TECHNOLOGIES (SHANGHAI) CO., LTD.Inventor: Regis Fan
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Patent number: RE44889Abstract: In a liquid crystal device a substrate (1) favors at least two stable or metastable differently directed liquid crystal alignments, and switching means for causing the liquid crystal material to switch between the alignments includes means arranged for optically irradiating said device. The latter may provide linearly polarized light (3) for inducing a torque on the liquid crystal to determine the alignment direction, and may optionally cooperate with a second energy supplying means such as an electric field (V) for assisting and switching. Alternatively, the alignment of the liquid crystal may be switched by a second energy supplying means such as an electric field, the light serving to produce heat to aid the switching. Either or both energy sources may be applied locally for switching of selected areas or pixels. Energy levels at the bistable substrate may be adjusted by the use of an oligomeric additive (slippery surface).Type: GrantFiled: February 28, 2008Date of Patent: May 13, 2014Assignee: F. Poszat Hu, LLCInventors: Richard Jonathan Miller, John Clifford Jones