Alignment Layer Patents (Class 349/123)
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Publication number: 20150036088Abstract: A liquid crystal display includes an interval layer to reduce a cell gap between a lower substrate and an upper substrate. A first electrode is disposed on the lower substrate. The interval layer covers on the first electrode. A second electrode is disposed on the upper substrate and facing the lower electrode. A liquid crystal layer including a liquid crystal material is interposed between the interval layer and the second electrode. The first electrode includes repetitively patterned electrodes.Type: ApplicationFiled: February 24, 2014Publication date: February 5, 2015Applicant: SAMSUNG DISPLAY CO., LTDInventors: Hyung Guen YOON, Soon Joon RHO, Hye Lim JANG
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Publication number: 20150029451Abstract: Provided are a liquid crystal display device that suppresses occurrence of drop marks during production without degrading various properties, such as dielectric anisotropy, viscosity, nematic phase upper limit temperature, rotational viscosity (?1), and ghosting property, and a method for producing the liquid crystal display device. A liquid crystal display device 10 of the present invention includes a liquid crystal composition layer 13 sandwiched between a first substrate 11 and a second substrate 12 and vertical alignment films 16 and 17 that contain a polymer of a polymerizable compound having a reactive group. The liquid crystal composition constituting the liquid crystal composition layer 13 contains compounds represented by general formulae (I) and (II).Type: ApplicationFiled: September 5, 2012Publication date: January 29, 2015Applicant: DIC CORPORATIONInventors: Shinji Ogawa, Yoshinori Iwashita, Takeshi Kuriyama
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Publication number: 20150029453Abstract: A liquid-crystal photo-alignment layer that is composed of polymer stabilized azo dyes is provided, where a polymer network is introduced in the photo-alignment layer for stabilization. The photo-alignment layer is realized based on a two-step irradiation to first achieve molecule alignment to form the photo-alignment layer and then stabilize this layer. To realize the photo-alignment layer, a pre-determined surface of the substrate is first coated with a film of mixture. The mixture comprises an azo dye and a monomer preferably mixed in an optimal concentration of 0.67 wt/wt. The azo dye and the monomer have light-absorption peaks at different wavelengths such that photo-alignment of the azo-dye molecules and stabilization of the photo-alignment layer by polymerization of the monomer are achievable by two separate exposures of light to the film.Type: ApplicationFiled: June 25, 2014Publication date: January 29, 2015Inventors: Qi GUO, Abhishek Kumar SRIVASTAVA, Vladimir Grigorievich CHIGRINOV, Hoi Sing KWOK
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Publication number: 20150029448Abstract: According to one embodiment, a liquid crystal display device includes a first substrate including a cross-shaped pixel electrode which includes a main pixel electrode and a sub-pixel electrode, and a second substrate including a common electrode which includes main common electrodes and sub-common electrodes. A first horizontal inter-electrode distance between the main pixel electrode and the main common electrode is less than a second horizontal inter-electrode distance between the sub-pixel electrode and the sub-common electrode and is greater than a vertical inter-electrode distance between the main pixel electrode and the main common electrode.Type: ApplicationFiled: September 10, 2014Publication date: January 29, 2015Applicant: JAPAN DISPLAY INC.Inventors: Jin HIROSAWA, Arihiro TAKEDA
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Publication number: 20150029452Abstract: Provided are a liquid crystal display device that suppresses occurrence of drop marks during production without degrading various properties, such as dielectric anisotropy, viscosity, nematic phase upper limit temperature, rotational viscosity (?1), and ghosting property, and a method for producing the liquid crystal display device. A liquid crystal display device 10 of the present invention includes a liquid crystal composition layer 13 sandwiched between a first substrate 11 and a second substrate 12 and vertical alignment films 16 and 17 formed of a cured product of a polymerizable liquid crystal compound. The liquid crystal composition constituting the liquid crystal composition layer 13 contains compounds represented by general formulae (I) and (II).Type: ApplicationFiled: September 5, 2012Publication date: January 29, 2015Applicant: DIC CORPORATIONInventors: Shinji Ogawa, Yoshinori Iwashita, Takeshi Kuriyama
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Patent number: 8937698Abstract: First alignment is performed by forming an alignment layer that includes a photopolymerizable monomer or oligomer on a substrate and the like, introducing liquid crystal, and bringing the liquid crystal into contact with the alignment layer including the photopolymerizable monomer or oligomer. The liquid crystal is then subjected to secondary alignment by photopolymerizing the photopolymerizable monomer or oligomer including the alignment layer to form an alignment regulator in a state in which an electric field is applied to the liquid crystal to change the alignment of the liquid crystal.Type: GrantFiled: June 26, 2012Date of Patent: January 20, 2015Assignee: Samsung Display Co., Ltd.Inventor: Jae-Hoon Kim
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Publication number: 20150015839Abstract: A liquid crystal lens includes a liquid crystal layer and at least two driving electrode plates. The liquid crystal layer is arranged between the driving electrode plates. Each of the driving electrode plates includes a transparent substrate, a circuit layer, an insulating layer, an electrode layer, at least a conducting pillar and an alignment layer. The transparent substrate has a surface, and the circuit layer is atop the surface. The conducting pillar is arranged in the insulating layer and connected to the electrode layer and the circuit layer. The alignment layer contacts the liquid layer. The electrode layer is interposed between the alignment layer and the insulating layer. The electrode layer in at least one of the driving electrode plates includes at least two ring-shaped electrodes.Type: ApplicationFiled: February 4, 2014Publication date: January 15, 2015Applicant: SILICON TOUCH TECHNOLOGY INC.Inventors: CHI-YUAN CHIN, YAN WU, RONG-LI LIU, LING-YUAN TSENG, YONG CAO, CHENG-CHIEH YANG
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Publication number: 20150015826Abstract: The present invention provides a liquid crystal display device that can suppress image sticking, ensure the long-term reliability, and improve the display quality; and a method of producing the same. The present invention provides a liquid crystal display device including: a first substrate; a second substrate; a photoalignment film provided on at least one of the first and second substrates; a polymer layer provided on the photoalignment film; and a liquid crystal layer provided between the first and second substrates, the polymer layer containing a polymer having a monomer unit derived from two or more kinds of polymerizable monomers, the two or more kinds of polymerizable monomers including at least a monomer that increases the polymerization rate as compared with a conventional case and a monomer that improves the residual DC voltage and prevents lowering of the VHR.Type: ApplicationFiled: January 7, 2013Publication date: January 15, 2015Inventor: Masanobu Mizusaki
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Publication number: 20150015840Abstract: A liquid crystal display device includes a TFT substrate and a counter substrate on each of which an alignment film is formed and a liquid crystal interposed and held between the alignment films of the TFT and counter substrate, wherein the alignment film is made of a material capable of applying liquid crystal alignment regulation force by polarized light irradiation, a convex structure is formed on the TFT substrate or the counter substrate, and the alignment film is applied the liquid crystal alignment regulation force to a surface of a region ranging from the periphery of the convex structure to the vicinity of an inclined part of the convex structure and is not applied the liquid crystal alignment regulation force to a surface of the inclined part of the convex structure.Type: ApplicationFiled: July 8, 2014Publication date: January 15, 2015Inventors: Yasuo IMANISHI, Yosuke HYODO, Chikae MATSUI, Hidehiro SONODA, Noboru KUNIMATSU
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Patent number: 8928555Abstract: A display device can include a housing, a processor, and a display assembly. The processor can be arranged within the housing. The display assembly can be operably coupled to the processor and arranged within the housing. The display assembly can include a first display, a privacy filter, and a second display. The first display can output a first portion of the display. The second display can output a second portion of the display. The privacy filter and the first and second displays can be arranged such that the first portion of the display assembly is filtered by the privacy filter to be viewable in a first viewable arc. The second portion of the display assembly can be viewable in a second viewable arc that is different than the first viewable arc. The first and second displays can be LCD's.Type: GrantFiled: March 15, 2013Date of Patent: January 6, 2015Assignee: Google Inc.Inventors: Roy Want, Richard Carl Gossweiler, III, Colin Albright McDonough
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Publication number: 20150002798Abstract: A liquid crystal display device includes multiple pixels which are arrayed. Each pixel includes a first substrate, a second substrate, a first electrode formed on an opposing face of the first substrate which faces the second substrate, a second electrode formed on an opposing face of the second substrate which faces the first substrate, a liquid crystal layer which includes liquid crystal molecules, situated between the first electrode and the second electrode, and a planarization layer. The liquid crystal molecules are pretilted. Multiple ridge-and-groove portions are formed at the first electrode. At least the grooves of the first electrode are filled in by the planarization layer.Type: ApplicationFiled: June 20, 2014Publication date: January 1, 2015Applicant: Sony CorporationInventors: Masashi Miyakawa, Chikashi Kobayashi, Shunichi Suwa
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Publication number: 20150002799Abstract: A liquid crystal display device (100) includes a first substrate (10) and a second substrate (20) opposing each other, and a liquid crystal layer (30) provided between the first substrate and the second substrate. At least one of the first substrate and the second substrate includes a horizontal alignment film (12, 22) provided on a side closer to the liquid crystal layer. The liquid crystal display device further includes an alignment sustaining layer (40a, 40b) provided between the horizontal alignment film and the liquid crystal layer, the alignment sustaining layer containing a polymerization product of a photopolymerizable compound. The photopolymerizable compound contains an acrylate group or a methacrylate group. The polymerization product in the alignment sustaining layer contains an acrylate group or a methacrylate group as a residue. The horizontal alignment film contains an acrylate group or a methacrylate group.Type: ApplicationFiled: January 28, 2013Publication date: January 1, 2015Applicant: Sharp Kabushiki KaishaInventors: Isamu Miyake, Koichi Miyachi, Hiroaki Asagi, Akira Hirai
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Publication number: 20150002770Abstract: In a liquid crystal display device, liquid crystal molecules are oriented in a vertical direction to the first substrate and the second substrate by the first molecule orientation film and the second molecule orientation film, respectively, in a non-driving state. A structural pattern is formed so as to extend in a first direction parallel a surface of the liquid crystal layer and so as to form, in a driving state, an electric field periodically changing in a second direction that is parallel to the liquid crystal layer and vertical to the first direction. The liquid crystal molecules substantially tilt in the first direction in the driving state.Type: ApplicationFiled: September 12, 2014Publication date: January 1, 2015Inventors: Shingo Kataoka, Arihiro Takeda, Takahiro Sasaki, Tsutomu Seino, Yoshio Koike, Hidefumi Yoshida, Yuichi Inoue, Kazutaka Hanaoka, Seiji Tanuma, Takatoshi Mayama, Kimiaki Nakamura, Hideo Chida, Seiji Doi, Tetsuya Fujikawa, Takashi Takagi, Hiroyasu Inoue
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Publication number: 20150002797Abstract: The present invention provides a liquid crystal material including: a liquid crystal molecule including an alkenyl group; a phenol-based antioxidant; and a light stabilizer for recycling the phenol-based antioxidant.Type: ApplicationFiled: May 30, 2014Publication date: January 1, 2015Applicant: LG Display Co., Ltd.Inventors: Seung-Kwang ROH, Woo-Young CHOI
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Publication number: 20140375940Abstract: The present invention relates a technique of liquid crystal display, especially to an alignment film applied to a substrate of a liquid crystal display. The alignment film includes a plurality of alignment molecules including polyamic acid and/or polyimide and a plurality of photo-sensitive molecules including terphenyl and/or substituted terphenyl, wherein a mass ratio of the plurality of alignment molecules to the plurality of photo-sensitive molecules is 3˜7%:0.0002˜2%. The present invention further provides a method of fabricating the alignment film and a liquid crystal display using the same. Due to the photosensitive group of the monomers, the plurality of alignment molecules can be formed with an appropriated rate, and the alignment film formed thereby has homogeneity. Therefore, the optic quality and overall performance of the liquid crystal display are enhanced.Type: ApplicationFiled: June 28, 2013Publication date: December 25, 2014Applicant: Shenzhen China Star Optoelectronics Technology Co., Ltd.Inventors: Xinhui Zhong, Kuan-cheng Lee
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Publication number: 20140375913Abstract: A liquid crystal lens includes a plurality of first stripe-shaped electrodes, a plurality of second stripe-shaped electrodes, and a plurality of third stripe-shaped electrodes. Each first stripe-shaped electrode is disposed between any two of the second stripe-shaped electrodes that are adjacent to each other, and each second stripe-shaped electrode and each first stripe-shaped electrode are arranged along a first direction alternately. The third stripe-shaped electrodes are arranged along a second direction sequentially and interlaced with the first stripe-shaped electrodes and the second stripe-shaped electrodes. Any two of the second stripe-shaped electrodes and two opposite sides of each third stripe-shaped electrode perpendicular to the second direction define a lens region.Type: ApplicationFiled: June 25, 2014Publication date: December 25, 2014Inventors: Tai-Hsiang Jen, Yan-Yu Su, Yi-Pai Huang, Chong-Yang Fang
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Publication number: 20140375939Abstract: The present invention relates a technique of liquid crystal display, especially to an alignment film applied to a substrate of a liquid crystal display. The alignment film includes a plurality of alignment molecules formed by polymerizing monomers having at least a photosensitive group, and has formula e as wherein the component A and/or the component B in formula e comprise(s) terphenyl. The present invention further provides a method of fabricating the alignment film and a liquid crystal display using the same. Due to the photosensitive group of the monomers, the plurality of alignment molecules can be formed with an appropriated rate, and the alignment film formed thereby has homogeneity. Therefore, the optic quality and overall performance of the liquid crystal display are enhanced.Type: ApplicationFiled: June 28, 2013Publication date: December 25, 2014Applicant: Shenzhen China Star Optoelectronics Technology Co., Ltd.Inventors: Xinhui Zhong, Kuan-cheng Lee
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Publication number: 20140368776Abstract: An object of the present invention is to provide a liquid-crystal lens having excellent imaging performance. A liquid-crystal lens (1) according to the present invention includes a first liquid-crystal layer (11), a second liquid-crystal layer (12), a third liquid-crystal layer (13), and a fourth liquid-crystal layer (14) which are arranged in this order along an optical axis (C). The first liquid-crystal layer (11) and the second liquid-crystal layer (12) are 90° different in alignment direction from each other in a plane perpendicular to the optical axis (C). The first liquid-crystal layer (11) and the fourth liquid-crystal layer (14) are 180° different in alignment direction from each other in the plane perpendicular to the optical axis (C). The second liquid-crystal layer (12) and the third liquid-crystal layer (13) are 180° different in alignment direction from each other in the plane perpendicular to the optical axis (C).Type: ApplicationFiled: January 11, 2013Publication date: December 18, 2014Inventors: Masaaki Kadomi, Hirokazu Tanaka, Masanori Wada, Takasi Akimoto
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Publication number: 20140368777Abstract: A liquid crystal display device includes first and second substrates. The first substrate includes a pixel electrode having a main pixel electrode in the shape of a belt and a first alignment film covering the pixel electrode. The first alignment film is alignment processed in a first alignment treatment direction substantially in parallel with an extending direction of the main pixel electrode. The second substrate includes a common electrode arranged on both sides sandwiching the pixel electrode and extending substantially in parallel with the extending direction of the main pixel electrode. A sub-common electrode extends in a direction crossing the extending direction of the main pixel electrode on one end side of the main pixel electrode located on a starting side of the first alignment treatment direction. A second alignment film is alignment processed in a second alignment treatment direction substantially in the same direction as the first alignment treatment direction.Type: ApplicationFiled: September 2, 2014Publication date: December 18, 2014Applicant: JAPAN DISPLAY INC.Inventor: Jin HIROSAWA
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Publication number: 20140368775Abstract: An alignment film for liquid crystal display device includes a first portion positioned towards to the liquid crystal layer and a second portion positioned away from the liquid crystal layer. The first portion provides improved anchoring force while the second portion exhibits a lower volume resistance than the first portion. Thus, AC image sticking and DC image sticking can be minimized at the same time.Type: ApplicationFiled: June 17, 2014Publication date: December 18, 2014Inventors: SeungRyull Park, HyunJin Park, JinPil Kim, Han Jin Ahn, Hanseok Lee, Su-Bin Lee
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Publication number: 20140368778Abstract: In one embodiment, a first shield electrode and a second shield electrode are arranged on a first substrate. A first source line and a second source line are arranged facing the first and second shield electrodes through an insulating layer, respectively. A first main common electrode and a second main common electrode are formed facing the first and second source lines through an insulating layer, respectively. A main pixel electrode is formed so as to locate between the first and second main common electrodes. A second substrate includes a third main common electrode and a fourth main common electrode facing the first and second main common electrodes, respectively. A liquid crystal layer is held between the first and second substrates. The first, second, third and fourth main common electrodes are set to the same electric potential.Type: ApplicationFiled: September 2, 2014Publication date: December 18, 2014Applicant: JAPAN DISPLAY INC.Inventors: Koji YAMAMOTO, Tetsuya IIZUKA
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Publication number: 20140362317Abstract: A display device having less defective alignment is provided. A display device having a high aperture ratio and including a capacitor which can increase charge capacity is also provided. A display device having a high aperture ratio, including a capacitor with large charge capacity, and having less defective alignment is also provided. A display device includes a pixel in a region defined by a scan line, a data line, and a capacitor line. The pixel includes a liquid crystal layer between a counter electrode and a pixel electrode, a spacer in the liquid crystal layer, and a transistor connected to the pixel electrode. The pixel electrode has a depressed portion, and alignment in the liquid crystal layer is controlled by the depressed portion and the spacer.Type: ApplicationFiled: May 29, 2014Publication date: December 11, 2014Applicant: Semiconductor Energy Laboratory Co., Ltd.Inventors: Daisuke KUBOTA, Yusuke KUBOTA
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Patent number: 8908134Abstract: In the step of curing a resin for bonding a TFT substrate and a counter substrate each having an alignment film that has been optically aligned by using UV-light, damage to the alignment film due to the UV-light can be prevented without using a light shielding mask. A UV-light absorption layer is formed between each black matrix on the counter substrate. The TFT and counter substrates are sealed at their periphery by a resin that is cured by UV-light radiated from the counter substrate side. Since the absorption layer has a high absorbability to UV-light at a wavelength of 300 nm or less that degrades the alignment film, damage to the alignment film due to the UV-light for curing the resin can be prevented. Thus, provision of a light shielding mask for shielding the UV-light for the display region can be saved.Type: GrantFiled: October 22, 2013Date of Patent: December 9, 2014Assignee: Japan Display Inc.Inventors: Noboru Kunimatsu, Yuko Matsumoto, Yasushi Tomioka, Masateru Morimoto, Atsuhiro Katayama
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Patent number: 8906474Abstract: Disclosed is a liquid crystal display device including: a first substrate and a second substrate, one of which is transparent; a liquid crystal layer disposed between the first substrate and the second substrate; a group of electrodes for applying an electric field to the liquid crystal layer, which is formed on one of the first substrate and the second substrate; a plurality of active elements connected to the group of electrodes; and an alignment film disposed on one of the first substrate and the second substrate, wherein the alignment film contains a polyimide and a precursor of the polyimide, each of which is formed from a diamine and an acid anhydride, and the diamine contains a first diamine having an acidic group and a second diamine having a nitrogen atom-containing functional group other than two amino groups.Type: GrantFiled: October 6, 2011Date of Patent: December 9, 2014Assignee: Japan Display Inc.Inventors: Masaki Matsumori, Yasuo Imanishi, Yasushi Tomioka, Noboru Kunimatsu
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Patent number: 8908135Abstract: A manufacturing method includes providing a structural element that provides a predetermined gap between a first substrate and a second substrate to at least one of the first and second substrates, forming an alignment film on each of the first and second substrates, and subjecting the alignment film formed on each of the first and second substrates to a rubbing process. The structural element is formed after the alignment film is formed and before or after the rubbing process is performed.Type: GrantFiled: January 30, 2013Date of Patent: December 9, 2014Assignee: Japan Display West Inc.Inventors: Takeo Koito, Daisuke Takama
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Patent number: 8908141Abstract: A display panel and a liquid crystal device are disclosed. The display panel includes a first substrate, a second substrate opposite to the first substrate, a sealant. The first substrate is arranged with a first alignment film. The second substrate is arranged with a second alignment film. The sealant surrounds the first substrate and the second substrate. A first wall is arranged on the first substrate, and the first wall is between an edge of the first alignment film and the sealant. A second wall is arranged on the second substrate, and the second wall is between an edge of the second alignment film and the plastic film. In this way, the distance between an active area and edges of the display panel is reduced so that the narrow bezel design may be implemented.Type: GrantFiled: September 6, 2012Date of Patent: December 9, 2014Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.Inventors: Ming-hung Shih, Zuomin Liao
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Patent number: 8908136Abstract: The invention provides a liquid crystal display panel with a multi-domain pixel layout, including: a plurality of pixel units arranged in a matrix formed by columns and rows, wherein each pixel unit is divided into a plurality of domains; a first alignment layer aligned to directions along the columns; and a second alignment layer aligned to directions along the rows. For two adjacent pixel units arranged in the column direction, the domains adjacent to a boundary between the two adjacent pixel units are defined with the same directions which liquid crystal molecules tilt toward by the first and second alignment layers.Type: GrantFiled: November 9, 2012Date of Patent: December 9, 2014Assignee: InnoLux CorporationInventors: Jian-Cheng Chen, Bo-Chin Tsuei, Bo-Han Lyu, Hong-Sheng Hsieh, Tzung-Han Tsai
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Patent number: 8908133Abstract: 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: GrantFiled: December 16, 2013Date of Patent: December 9, 2014Assignees: Japan Display Inc., Panasonic Liquid Crystal Co., Ltd.Inventors: Hidehiro Sonoda, Chikae Matsui, Noboru Kunimatsu, Yuko Matsumoto
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Publication number: 20140354930Abstract: The present invention provides a liquid crystal display device including a horizontal alignment type liquid crystal layer, sub spacers, and a photo-alignment film, wherein the liquid crystal display device can suppress the occurrence of a disclination. The present invention relates to a liquid crystal display device including: a pair of substrates facing each other; and a horizontal alignment type liquid crystal layer interposed between the pair of substrates, wherein at least one of the pair of substrates includes a photo-alignment film, one of the pair of substrates includes multiple sub spacers, the multiple sub spacers are not in contact with the facing substrate under atmospheric pressure, and each of the multiple sub spacers is formed such that its thickness in a cross section monotonically increases and then monotonically decreases from one end to another end of the sub spacer.Type: ApplicationFiled: November 9, 2012Publication date: December 4, 2014Applicant: Sharp Kabushiki KaishaInventors: Shinichi Hirato, Isamu Miyake
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Publication number: 20140354929Abstract: To improve the display quality of a vertical alignment liquid crystal display apparatus. The apparatus comprises two substrates, a first electrode extending in a first direction, a second electrode extending in a second direction intersecting the first direction, a crystal layer provided between the substrates, a pixel is configured where the two electrodes intersect, an electrode edge of the second electrode is of a shape that includes line segments obliquely crossed relative to the second direction and bend back, the pixel edges of the pixel are demarcated, including the line segments that are obliquely crossed, and the liquid crystal layer is disposed so that the angle of the alignment direction of the crystal molecules at the center and the direction perpendicular to the second direction is greater than 0°, and the alignment direction of the crystal molecules and the direction of obliquely crossed line segments don't become perpendicular.Type: ApplicationFiled: May 19, 2014Publication date: December 4, 2014Applicant: STANLEY ELECTRIC CO., LTD.Inventors: Makoto KOBAYASHI, Mitsuo FUJII, Yasuhiro NOMURA, Yoshihisa IWAMOTO
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Publication number: 20140354926Abstract: A display apparatus includes a first substrate including a first base substrate and pixel electrodes on the first base substrate, the pixel electrodes including a plurality of fine slits, a second substrate including a second base substrate facing the first base substrate, the second base substrate including a reference electrode and being coupled to the first base substrate, a structure part including a step portion and extending from the second base substrate toward the first base substrate, the structure part being in a boundary area between two adjacent pixel electrodes and being configured to block a fringe field in the boundary area, and a liquid crystal layer between the pixel electrodes and the reference electrode and including liquid crystal molecules, an alignment of the liquid crystal molecules in an area adjacent to the structure part being controlled by the step portion of the structure part.Type: ApplicationFiled: May 22, 2014Publication date: December 4, 2014Applicant: SAMSUNG DISPLAY CO., LTD.Inventors: Eun-Kil PARK, Seungho YANG, Wan-Soon IM
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Publication number: 20140347614Abstract: This liquid crystal display device (100) includes: a first substrate (10) including a pixel electrode (11); a second substrate (20) including a counter electrode (21); and a vertical alignment liquid crystal layer (30). At least one liquid crystal domain with axisymmetric alignment is produced when a voltage is applied between the pixel electrode and the counter electrode in each pixel. The second substrate further includes an alignment controlling projection which induces liquid crystal molecules (31) in the liquid crystal domain to get aligned axisymmetrically and a plurality of columnar spacers (24), which includes a first columnar spacer (24m) and a second columnar spacer (24s) which is lower than the first columnar spacer. The pixel electrode has a length of 35 ?m or less as measured along its shorter sides. In at least some of the pixels, the second columnar spacer functions as the alignment controlling projection.Type: ApplicationFiled: January 11, 2013Publication date: November 27, 2014Inventors: Katsushige Asada, Manabu Sawasaki, Junichi Morinaga, Masayuki Yamanaka
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Publication number: 20140333878Abstract: A liquid crystal display is disclosed. The liquid crystal display may include an insulation substrate a pixel electrode formed on the insulation substrate a lower alignment layer formed on the pixel electrode and includes an inorganic alignment layer formed of an inorganic insulating material, a liquid crystal layer disposed in a microcavity formed on the lower alignment layer, an upper alignment layer formed along a side and an upper surface of the microcavity and includes an inorganic alignment layer formed of an inorganic insulating material, and a common electrode formed on the upper alignment layer. The upper alignment layer and the lower alignment layer enclose the liquid crystal layer. A method of manufacturing a liquid crystal display is also disclosed.Type: ApplicationFiled: April 9, 2014Publication date: November 13, 2014Applicant: Samsung Display Co., Ltd.Inventors: Hee Keun LEE, Yeun Tae KIM, Soon Joon RHO
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Patent number: 8885121Abstract: A novel document security and authentication system is based on a transparent element on which more than one image appears depending on the manner in which the element is viewed. The system is based on cells or sheets of liquid crystal doped with one or more dichroic dyes. The images obtained with the aid of a polarizer can be printed onto a very thin (?m or 10 tens of a ?m) sheet of polymer material; the images may also be in greyscale or in color. There is no need to apply electrical signals during the production or use thereof.Type: GrantFiled: November 12, 2010Date of Patent: November 11, 2014Assignee: Universidad Politecnica de MadridInventors: Xabier Quintana Arregui, Jose Manuel Oton Sanchez, Morten Andreas Geday, Carlos Carrasco Vela
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Patent number: 8881671Abstract: A rubbing system for an alignment layer of a liquid crystal display (LCD) device, comprises: a rubbing table on which a substrate having an alignment layer thereon is positioned; a rubbing roll on which a rubbing material is wound, substantially positioned on the rubbing table thus to substantially contact the alignment layer, for rubbing the alignment layer by rotation of the rubbing roll; and a controlling unit for controlling the alignment layer to be rubbed by substantially contacting the rubbing roll onto the alignment layer by simultaneously lifting and lowering a rubbing table and the rubbing roll according to an alignment controlling force to be applied to the alignment layer.Type: GrantFiled: December 15, 2010Date of Patent: November 11, 2014Assignee: LG Display Co., Ltd.Inventors: Seung-Won Moon, Byoung-Chul Choi
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Patent number: 8885127Abstract: A first substrate includes a wiring layer formed on a support substrate, and an insulating film covering the wiring layer on the support substrate and having a surface which is located opposite to the support substrate and partially and directly covered with an alignment film. As seen perpendicularly to (i.e. as seen in the direction of the normal to) a surface of the support substrate, a recess portion formed on the insulating film at least partially overlaps the wiring layer. A bank of the recess portion has such a shape that a tangent plane of the bank increases in inclination toward the support substrate as the tangent plane is shifted toward a bottom of the recess portion, and supports an edge end of the alignment film.Type: GrantFiled: May 18, 2011Date of Patent: November 11, 2014Assignee: Sharp Kabushiki KaishaInventors: Yohsuke Kanzaki, Hiroyuki Moriwaki
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Publication number: 20140327865Abstract: In an aspect, an liquid crystal display including a first substrate, a second substrate facing the first substrate, and a liquid crystal layer interposed between the first substrate and the second substrate and including liquid crystals, a first alignment polymer, and a second alignment polymer is provided, In an aspect, the first alignment polymer is formed by radiating electromagnetic radiation on a first alignment aid photoreactive in a first wavelength region, the second alignment polymer is formed by radiating electromagnetic radiation on a second alignment aid photoreactive in a second wavelength region, and the first wavelength region and the second wavelength region are different from each other.Type: ApplicationFiled: March 24, 2014Publication date: November 6, 2014Applicant: Samsung Display Co., Ltd.Inventors: Keun Chan Oh, Jun Hyup Lee
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Patent number: 8879009Abstract: An optical filter for a stereoscopic display device separating left-view and right-view images includes a substrate, one or more alignment layers formed on the substrate in a predetermined pattern and each having partition wall parts on edges of each alignment layer, and one or more liquid crystal layers formed on the alignment layers, wherein a height of each of the partition wall parts is two to ten times greater than a thickness of a center part of each alignment layer.Type: GrantFiled: November 10, 2011Date of Patent: November 4, 2014Assignee: LG Chem, Ltd.Inventors: Hyun-Sik Kim, Jung-Ho Park
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Patent number: 8877303Abstract: To form an optical alignment film having large anchoring strength and suppress an AC afterimage of a liquid crystal display device, in a liquid crystal display device of an IPS mode. In an alignment film material subjected to optical alignment processing, polyimide which becomes a rigid high molecule and polyimide which becomes a flexible high molecule are mixed and used. The material of the present invention can easily rotate oligomer after irradiating polarized ultraviolet rays and improve a UV-absorbed two-color ratio of an alignment film. Accordingly, an anchoring strength for liquid crystals by the alignment film is large to suppress an AC afterimage.Type: GrantFiled: May 9, 2012Date of Patent: November 4, 2014Assignee: Japan Display Inc.Inventors: Shoichi Uchino, Noboru Kunimatsu
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Publication number: 20140320791Abstract: A pixel electrode formed into a slit structure with striped electrodes opposed to each other for a zero rubbing angle can provide fast response since rotational directions of the liquid crystals become opposite at both sides of the slit in the striped electrodes. The electrode structure, however, poses a problem of low transmittance. Provided is a liquid crystal display device of IPS-Pro scheme including a pixel electrode with one pair of striped electrodes. The first striped electrode includes a short electrode section and long electrode sections, and the second striped electrode also includes a short electrode section and long electrode sections. The long electrode sections of the first striped electrode are disposed adjacently to those of the second striped electrode. Liquid crystals are aligned in a lengthwise direction of the striped electrodes.Type: ApplicationFiled: April 24, 2014Publication date: October 30, 2014Applicant: Japan Display Inc.Inventors: Mika OIWA, Shinichiro OKA, Toshiharu MATSUSHIMA
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Publication number: 20140320789Abstract: A liquid crystal display (LCD) device and a manufacturing method thereof are provided. An alignment layer and a seal pattern are formed to overlap to reduce a width of a bezel, and one or more alignment layer spreading preventing means are formed to prevent a degradation of adhesive strength between the seal pattern and a substrate due to the characteristics of the alignment layer.Type: ApplicationFiled: December 23, 2013Publication date: October 30, 2014Applicant: LG DISPLAY CO., LTD.Inventors: Kyung Mo SON, Dong Kyu LEE, Eun Hye LEE
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Publication number: 20140320793Abstract: 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: July 3, 2014Publication date: October 30, 2014Applicant: JAPAN DISPLAY, INC.Inventor: Jin HIROSAWA
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Publication number: 20140320790Abstract: A liquid crystal display device including a first substrate, a first alignment layer provided on the first substrate, a second substrate facing the first substrate, a second alignment layer provided on the second substrate, and a liquid crystal layer provided between the first substrate and the second substrate and including liquid crystal molecules is provided. Each of the first alignment layer and the second alignment layer includes a base alignment layer, and an alignment forming layer provided on the base alignment layer, and the alignment forming layer comprises a derivative of a heat stabilizer and an alignment material comprising first functional group which is polymerized to initially align the liquid crystal molecules.Type: ApplicationFiled: January 21, 2014Publication date: October 30, 2014Applicant: Samsung Display Co., Ltd.Inventors: GAK SEOK LEE, Duckjong SUH, Hyunku AHN, Kyoungtae KIM, TAEKJOON LEE, Seungyeon JEONG
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Patent number: 8873006Abstract: The present invention prevents the shaving of an alignment film caused by a columnar spacer in a liquid crystal display device of an IPS method using photo-alignment. A plinth higher than a pixel electrode is formed at a part where a columnar spacer formed over a counter substrate touches a TFT substrate. When an alignment film of a double-layered structure is applied over the pixel electrode and the plinth, the thickness of the alignment film over the plinth reduces by a leveling effect. When photo-alignment is applied in the state, a photodegraded upper alignment film over the plinth disappears and a lower alignment film having a high mechanical strength remains. As a result, it is possible to prevent the shaving of the alignment film.Type: GrantFiled: February 28, 2012Date of Patent: October 28, 2014Assignee: Japan Display Inc.Inventors: Noboru Kunimatsu, Masaki Matsumori, Hidehiro Sonoda, Yasushi Tomioka, Toshiki Kaneko
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Patent number: 8872990Abstract: An arrangement with a shared polarizer disposed between two panels capable of displaying a 3D image using parallax barrier techniques is provided, where the quality of a displayed 3D image is prevented from decreasing due to the left-right imbalance in contrast ratio. The arrangement includes: a main panel; a switch panel for displaying a slit image serving as a parallax barrier; a polarizer located closer to the viewed side of the main panel; a polarizer located between the main panel and the switch panel; and a polarizer located closer to the side of the switch panel opposite the side closer to the main panel. The direction of rubbing for one of the alignment films of the switch panel is at an angle relative to the absorption axis of one of the polarizers such that a contrast ratio within a view range of the left and right eyes is equal to or higher than a reference value, the contrast ratio being measured on a visual line corresponding to the transmission axis of one of the polarizers.Type: GrantFiled: July 11, 2011Date of Patent: October 28, 2014Assignee: Sharp Kabushiki KaishaInventors: Kimitaka Nomura, Tomoo Takatani, Hiroshi Fukushima, Ryoh Kikuchi
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Patent number: 8873005Abstract: A method for manufacturing an alignment layer is provided. An alignment material having an ultraviolet reactive functional group is formed on a substrate. A pre-baking process is performed on the alignment material located on the substrate. An ultraviolet polarizer is provided on the substrate. An aligning process is performed on the pre-baked alignment material, so as to irradiate an ultraviolet light to the substrate. The ultraviolet light passes through the ultraviolet polarizer and irradiates to the pre-baked alignment material. A post-baking process is performed on the alignment material after being aligned, so as to fully cure the alignment material.Type: GrantFiled: December 27, 2012Date of Patent: October 28, 2014Assignee: Chunghwa Picture Tubes, Ltd.Inventors: Chia-Sheng Hsieh, Hsin-Min Fu, Hung-Yu Wu, Jan-Tian Lian
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Patent number: 8867133Abstract: The present disclosure relates to a polarization converting device and a method for manufacturing the same, wherein the polarization converting device includes a polarization separation unit aligned with a plurality of unit blocks including an optical separator transmitting a first polarization between an upper surface and a lower surface and reflecting a second polarization, and a phase retarder aligned in correspondence to an upper surface of each unit block of the polarization separation unit where a first region and a second region are alternately formed, wherein any one of the first and second regions of the phase retarder converts the polarized light while the other region emits the polarized light as it is.Type: GrantFiled: July 6, 2010Date of Patent: October 21, 2014Assignee: LG Innotek Co., Ltd.Inventors: Eunsung Seo, Seungman Jeong, Hyunho Choi
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Patent number: 8867007Abstract: A liquid crystal display device includes an array substrate including a pixel electrode which is disposed in each of pixels, a counter-substrate which is disposed to be opposed to the array substrate and includes a counter-electrode which is common to a plurality of the pixels, and a liquid crystal layer which is held between the array substrate and the counter-substrate. The pixel electrode includes a first major electrode portion having a strip shape, and the counter-electrode includes second major electrode portions each having a strip shape, the second major electrode portions being disposed in parallel to the first major electrode portion in a manner that the first major electrode portion is interposed between the second major electrode portions and that the first major electrode portion and the second major electrode portions are alternately arranged.Type: GrantFiled: June 27, 2013Date of Patent: October 21, 2014Assignee: Japan Display Inc.Inventor: Jin Hirosawa
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Patent number: 8865273Abstract: A photoalignment compound is represented by the following Chemical Formula 1, wherein “x” represents an integer in a range of 1 to 4, each of R1 and R2 represents —(CH2)n—, “n” represents an integer in a range of 1 to 6, at least one of the (—CH2-)s in R1 is replaceable with R3 represents —(CH2)mCH3, “m” represents an integer in a range of 1 to 12, each hydrogen atom of R3 is replaceable with F or Cl, R4 represents an amino group, aniline group, carboxy group, hydroxyl group, cyano group, alkylene group, or functional groups being represented by the following Chemical Formulas 2, 3, 4, or 5, each hydrogen atom of Chemical Formula 1 is replaceable with —O(CH2)kCH3, —(CH2)kCH3, F, or Cl, and “k” represents an integer in a range of 1 to 3, or 0.Type: GrantFiled: August 7, 2012Date of Patent: October 21, 2014Assignee: Samsung Display Co., Ltd.Inventors: Sung-Chan Jo, Weon-Eik Oii
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Patent number: 8867002Abstract: To provide a photoalignable material that can yield a photoalignable film having a high optical uniformity and no alignment defect, and allows photoalignment with exposure in a short period of time. A photoalignable polymer composition containing a specific photoalignable polymer having a silicone group or a fluorine-substituted alkyl group, and a photoalignable group, and a specific non-photoalignable polymer is manufactured, and the photoalignable film is manufactured by applying the polymer composition onto a base material or the like, drying an applied surface thereon, and irradiating the applied surface with light.Type: GrantFiled: January 30, 2013Date of Patent: October 21, 2014Assignees: JNC Corporation, JNC Petrochemical CorporationInventors: Mayumi Tanabe, Daisuke Ootsuki, Kie Kubouchi