Alignment Layer Patents (Class 349/123)
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Patent number: 12044935Abstract: The liquid crystal display device includes: a TFT substrate including scanning lines extending in a first direction and being arranged in a second direction, video signal lines extending in the second direction and being arranged in the first direction, pixel electrodes arranged in regions surrounded by the scanning lines and the video signal lines, and common electrodes formed with an insulating film arranged between the common electrodes and the pixel electrodes; a counter substrate opposed to the TFT substrate; and a liquid crystal. The first common electrode extends between the first and second scanning lines in the first direction, and the second common electrode extends between the second and third scanning lines in the first direction. The first and second common electrodes are electrically connected by a bridge. The bridge covers the first video signal line without covering the second video signal line, when seen in a plan view.Type: GrantFiled: August 25, 2023Date of Patent: July 23, 2024Assignee: Japan Display Inc.Inventor: Motoharu Miyamoto
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Patent number: 12048225Abstract: An organic light-emitting display device includes a first substrate having sub-pixel areas, each sub-pixel area having a light-emitting area and a non-light-emitting area; thin-film transistors respectively in non-light-emitting areas of the sub-pixel areas; a first planarization layer in the sub-pixel areas while covering the thin-film transistors; organic light-emitting elements on the first planarization layer and in light-emitting areas of the sub-pixel areas; a liquid crystal layer on the organic light-emitting elements and in the sub-pixel areas and in an area between the sub-pixel areas; and a second substrate on the liquid crystal layer. Liquid crystal molecules of the liquid crystal layer in the light-emitting areas are in a hybrid alignment. In the hybrid alignment, an alignment of the liquid crystal molecules gradually changes from a horizontal alignment to a vertical alignment. Liquid crystal molecules of the liquid crystal layer in the non-light-emitting areas are in a tilted alignment.Type: GrantFiled: December 15, 2021Date of Patent: July 23, 2024Assignee: LG DISPLAY CO., LTD.Inventors: Hyejeong Park, Sumin Lee, Youngmin Oh
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Patent number: 12038633Abstract: A privacy display comprises a polarised output spatial light modulator, reflective polariser, plural polar control retarders and a polariser. In a privacy mode of operation, on-axis light from the spatial light modulator is directed without loss, whereas off-axis light has reduced luminance. Further, display reflectivity is reduced for on-axis reflections of ambient light, while reflectivity is increased for off-axis light. The visibility of the display to off-axis snoopers is reduced by means of luminance reduction and increased frontal reflectivity to ambient light. In a public mode of operation, the liquid crystal retardance is adjusted so that off-axis luminance and reflectivity are unmodified.Type: GrantFiled: March 27, 2023Date of Patent: July 16, 2024Assignee: RealD Spark, LLCInventors: Michael G. Robinson, Graham J. Woodgate, Jonathan Harrold, Robert A. Ramsey
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Patent number: 12032790Abstract: A display device includes: a substrate; a display layer disposed on the substrate and including a plurality of light emitting areas; a code pattern layer disposed on the display layer and including a plurality of position code patterns; and a reflective layer that receives first light incident from the outside having a first wavelength band and reflects the first light to generate second light having a second wavelength band, wherein a second peak wavelength of the second light is smaller than a first peak wavelength of the first light.Type: GrantFiled: January 24, 2023Date of Patent: July 9, 2024Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Da Som Gu, Ki Jun Roh, Gil Yeong Park, Sung Guk An, Hee Young Lee, So Yeon Han
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Patent number: 12025896Abstract: A display device includes a first pixel electrode having a first strip electrode and a second strip electrode, a second pixel electrode having a third strip electrode and a fourth strip electrode disposed in the second main pixel, and a light-shielding layer overlapping the first strip electrode. The light-shielding layer has a first opening exposing the second strip electrode, and a second opening exposing the third strip electrode and the fourth strip electrode. A size of the first opening is less than a size of the second opening. A width of the second strip electrode is less than a width of the first strip electrode.Type: GrantFiled: May 5, 2023Date of Patent: July 2, 2024Assignee: Japan Display Inc.Inventor: Koichiro Adachi
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Patent number: 12025887Abstract: A shooting method applied to the electronic device including a display screen and a camera. The display screen includes a first polarizer and a second polarizer, and a liquid crystal is arranged between the first polarizer and the second polarizer. The method includes: adjusting an electrode voltage of the display screen as a target voltage value, where in a case that the electrode voltage of the display screen is the target voltage value, and a light transmittance of the display screen meets a preset condition; and acquiring a first image through the camera.Type: GrantFiled: March 16, 2022Date of Patent: July 2, 2024Assignee: VIVO MOBILE COMMUNICATION CO., LTD.Inventor: Lue Jiang
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Patent number: 12001103Abstract: According to one embodiment, a liquid crystal display device includes a first substrate including a first alignment film covering a pixel electrode, a second substrate including a second alignment film covering a second common electrode, a sealant attaching the first substrate and the second substrate, and a liquid crystal layer held between the first alignment film and the second alignment film, wherein the first alignment film and the second alignment film are formed of a material in which a principal chain is composed of silica (SiO2), and extend at a position overlapping the sealant between an inner face and an outer face of the sealant.Type: GrantFiled: May 8, 2023Date of Patent: June 4, 2024Assignee: Japan Display Inc.Inventor: Keisuke Takano
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Patent number: 11994775Abstract: In this liquid crystal display device, a plurality of pixels 30 are arranged in a display region. The liquid crystal display device comprises a first substrate 11 in which a pixel electrode 15 having slits 15a is provided, a second substrate disposed face to the first substrate 11, a liquid crystal layer 13 containing liquid crystal molecules that have negative dielectric anisotropy, a first alignment film 22, and a second alignment film 23. The slits 15a are positioned in each alignment region of a plurality of alignment regions in the pixels 30, and have oblique slit parts extending in an oblique direction with respect to sides of the pixels 30. The angle ? formed by the direction in which the oblique slit parts extends and a liquid crystal projection direction is 15 degrees or more and 85 degrees or less.Type: GrantFiled: July 21, 2020Date of Patent: May 28, 2024Assignee: JSR CORPORATIONInventors: Yoshihiko Kuroda, Koichi Miyachi
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Patent number: 11984454Abstract: The display device has a first substrate having a display area including pixels and a peripheral area surrounding the display area and including a peripheral circuit, a second substrate arranged facing the first substrate, a liquid crystal layer arranged between the first substrate and the second substrate, and a plurality of gate wirings spaced apart in a first direction in the peripheral circuit of the first substrate, and a plurality of signal lines spaced apart in a second direction intersecting the first direction, wherein the second substrate has a black matrix with a lattice area at a position facing the display area and the peripheral circuit, and the lattice area of the black matrix is arranged to overlap the plurality of gate wirings and the plurality of signal lines of the peripheral circuit.Type: GrantFiled: May 9, 2023Date of Patent: May 14, 2024Assignee: JAPAN DISPLAY INC.Inventors: Kentaro Kawai, Yuuji Oomori, Yoshihide Ohue
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Patent number: 11982907Abstract: A liquid crystal panel is provided and includes first and second substrates with liquid crystal layer therebetween; and first electrode in display region; second electrode disposed between first electrode and first substrate; and alignment film having alignment direction, wherein first electrode has: pair of electrode branches; slit between pair of electrode branches; first and second connections connecting pair of electrode branches; wherein first electrode has areas including first and second bent portions, main portion disposed between first and second bent portions, wherein first bent portion is adjacent to contact hole of first electrode, wherein first and second bent portions are bent relative to main portion, and wherein direction of first bent portion is substantially parallel to direction of second bent portion.Type: GrantFiled: January 27, 2023Date of Patent: May 14, 2024Assignee: Japan Display Inc.Inventors: Yoshihiro Sakurai, Hironao Tanaka, Harumi Okuno, Takeo Koito
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Patent number: 11974467Abstract: A display device and manufacturing method thereof with a high level of reliability is provided without increasing the number of manufacturing processes. The display device includes a first conductor, a first insulation layer including a first contact hole exposing a part of the first conductor, a second insulation layer including a second contact hole exposing at least a part of the first contact hole and a part of a surface of the first insulation layer, a pixel electrode overlapping a part of the second contact hole and electrically connected to the first conductor, and a third insulation layer contacting the first insulation layer via the second contact hole.Type: GrantFiled: December 13, 2021Date of Patent: April 30, 2024Assignee: Japan Display Inc.Inventors: Kenta Kajiyama, Masakazu Kaida
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Patent number: 11971627Abstract: Provided are a display panel and a method for preparing same, and a display apparatus. The display panel includes an array substrate and an opposite substrate, which are oppositely arranged, and a liquid crystal layer, which is arranged between the array substrate and the opposite substrate, wherein a compensation layer is arranged on the array substrate or the opposite substrate, and an included angle between an optical axis direction of the compensation layer and an initial optical axis direction of liquid crystal molecules in the liquid crystal layer is less than or equal to 10 degrees; dispersion characteristics of the liquid crystal layer and the compensation layer are the opposite of each other.Type: GrantFiled: April 26, 2021Date of Patent: April 30, 2024Assignees: BEIJING BOE DISPLAY TECHNOLOGY CO., LTD., BOE Technology Group Co., Ltd.Inventors: Feifei Wang, Hongming Zhan, Xibin Shao, Lintao Ji
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Patent number: 11966122Abstract: A light control sheet including a first transparent electrode layer, a second transparent electrode layer, a light control layer including a resin layer which is formed between the first and second transparent electrode layers and includes a liquid crystal composition in holes formed in the resin layer, the liquid crystal composition including liquid crystal molecules, and a first alignment layer formed between the first transparent electrode layer and the light control layer such that a haze of the light control layer is increased upon application of a voltage to the first transparent electrode layer. The light control layer includes a first high-density portion and a low-density portion, and the first high-density portion is in contact with the first alignment layer and includes the liquid crystal composition at a density higher than a density of the liquid crystal composition in the low-density portion per unit thickness of the light control layer.Type: GrantFiled: December 8, 2022Date of Patent: April 23, 2024Assignee: TOPPAN Inc.Inventors: Gen Nakamura, Toshiji Yasuhara, Taisuke Enya, Yuka Kurokawa, Yusuke Takahashi
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Patent number: 11967295Abstract: A display driver includes: a conversion part which converts first to n-th display data pieces representing a brightness level of each pixel based on an image signal into first to n-th gradation voltages each having a voltage value corresponding to the brightness level and outputs them, where n is an integer of 2 or more; a polarity inversion signal generation circuit which generates a polarity inversion signal for prompting polarity inversion for each frame display period according to the image signal; a first external terminal which receives an operation mode signal representing a test mode or a normal mode; and a first selector which receives a test polarity inversion signal and the polarity inversion signal, selects and outputs the polarity inversion signal when the operation mode signal represents the normal mode, and selects and outputs the test polarity inversion signal when the operation mode signal represents the test mode.Type: GrantFiled: September 5, 2022Date of Patent: April 23, 2024Assignee: LAPIS Technology Co., Ltd.Inventor: Hiroaki Ishii
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Patent number: 11966123Abstract: A device for photo alignment includes: a bearing platform; a linearly polarized light source located at one side of the bearing platform; and a control assembly located between the linearly polarized light source and the bearing platform. One side of the bearing platform close to the control assembly is configured for placing a large plate glass to be aligned, and the large plate glass to be aligned includes a plurality of alignment areas; the linearly polarized light source is configured for providing a first polarized light to the control assembly; the control assembly is configured for adjusting a polarization direction of the first polarized light, and configured for providing a second polarized light to the plurality of alignment areas included in the large plate glass to be aligned; and polarization directions of the second polarized light respectively corresponding to at least two alignment areas are different.Type: GrantFiled: December 30, 2021Date of Patent: April 23, 2024Assignee: HKC CORPORATION LIMITEDInventors: Jing He, Sihui Yu
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Patent number: 11940695Abstract: A manufacturing method of a light modulation panel, a light modulation panel and a light modulation device. The light modulation panel comprises: a first substrate and a second substrate arranged in align with each other, a liquid crystal filled between the first substrate and the second substrate, and spacer structures located between the first substrate and the second substrate and configured to maintain a cell gap of the liquid crystal; wherein the spacer structures comprise a first post spacer and a second post spacer arranged in a cascaded manner, the first post spacer is arranged on a side of the first substrate close to the second substrate, the second post spacer is arranged on a side of the second substrate close to the first substrate.Type: GrantFiled: September 23, 2021Date of Patent: March 26, 2024Assignees: Beijing BOE Sensor Technology Co., Ltd., BOE Technology Group Co., Ltd.Inventors: Sikai Zhang, Chunlei Wang, Jing Yu
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Patent number: 11914234Abstract: A touch panel and a touch display device are provided. The touch panel includes a display module and a package cover plate. The display module includes a display screen and a first polarizer placed on a side of the display screen. A first frame glue is placed between the package cover plate and the display module, and the first frame glue, the package cover plate and the display module form a cavity. A first liquid crystal is filled in the cavity. The first liquid crystal includes a plurality of first liquid crystal molecules, and orthogonal projections of light axes of some of the first liquid crystal molecules intersect a polarization direction of the first polarizer.Type: GrantFiled: July 17, 2020Date of Patent: February 27, 2024Assignee: HUIZHOU CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventor: Chingyuan Cheng
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Patent number: 11908875Abstract: A display panel and a display device are provided. A retaining wall is disposed on a middle position of a driver circuit layer, the retaining wall can prevent an insulating film from overlapping a whole sealing layer in an insulating film coating process, which improves adhesion of the display panel and reliability against high temperature and high humidity, thereby improving quality of the display panel.Type: GrantFiled: May 20, 2020Date of Patent: February 20, 2024Assignee: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd.Inventor: Wei Ren
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Patent number: 11860470Abstract: A flexible optical element adopting liquid crystals (LCs) as the materials for realizing electrically tunable optics is foldable. A method for manufacturing the flexible element includes patterned photo-polymerization. The LC optics can include a pair of LC layers with orthogonally aligned LC directors for polarizer-free properties, flexible polymeric alignment layers, flexible substrates, and a module for controlling the electric field. The lens power of the LC optics can be changed by controlling the distribution of electric field across the optical zone.Type: GrantFiled: November 20, 2020Date of Patent: January 2, 2024Assignee: COOPERVISION INTERNATIONAL LIMITEDInventors: Yi-Hsin Lin, Ming-Syuan Chen, Yu-Jen Wang
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Patent number: 11852939Abstract: A display device includes a first substrate, a second substrate, a first electrically conductive portion and a second electrically conductive portion disposed between the first substrate and the second substrates. The first substrate includes a first line, a second line, a first connection electrode projecting from the first line toward the second line, and a second connection electrode projecting from the second line toward the first line. The second substrate includes a first electrode, a third connection electrode electrically connected to the first electrode and disposed to overlap the first connection electrode, a second electrode, and a fourth connection electrode electrically connected to the second electrode and disposed to overlap the second connection electrode. The first electrically conductive portion overlaps and contacts the first connection electrode and the third connection electrode.Type: GrantFiled: January 4, 2023Date of Patent: December 26, 2023Assignee: Sharp Display Technology CorporationInventor: Ryo Yonebayashi
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Patent number: 11823641Abstract: The display device of the present disclosure comprises: a display panel; a backlight for providing light to the display panel; a liquid crystal panel which is arranged between the display panel and the backlight and which includes a first transparent electrode sheet, a second transparent electrode sheet, and a liquid crystal layer formed between the first and second transparent electrode sheets and arranged according to the difference in voltages applied to the first and second transparent electrode sheets; and a control unit for applying a driving voltage to a block, which corresponds to a region of the display panel, from among a plurality of blocks of the first transparent electrode sheet in order to apply a voltage to a specific point inside the block, wherein the voltage applied to the specific point is determined on the basis of the distance between a point of the first transparent electrode sheet.Type: GrantFiled: October 30, 2019Date of Patent: November 21, 2023Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Sunrock Lee, Yongmin Jung, Hyeongsik Choi
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Patent number: 11815706Abstract: Provided are a method of manufacturing an optical element in which an optically-anisotropic layer having a small amount of in-plane unevenness can be prepared, and an optical element.Type: GrantFiled: January 26, 2021Date of Patent: November 14, 2023Assignee: FUJIFILM CorporationInventors: Hiroshi Sato, Yukito Saitoh
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Patent number: 11807794Abstract: A liquid crystal alignment agent and a preparation method thereof, a liquid crystal alignment film and a preparation method thereof, and a liquid crystal cell are provided. A piperazine monomer is added to a liquid crystal alignment agent, a bulk resistance value and a surface resistance value of a liquid crystal alignment agent material can be reduced, and the ability of the liquid crystal alignment agent material to release residual charges can be effectively improved, thereby increasing the reliability and stability of an electronic product. The liquid crystal cell using the liquid crystal alignment agent has advantages such as high voltage holding ratio (VHR) and low residual voltage.Type: GrantFiled: October 22, 2021Date of Patent: November 7, 2023Assignee: SHENZHEN DALTON ELECTRONIC MATERIAL CO., LTDInventors: Shenglin Wang, Houming Li, Jianghua Su
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Patent number: 11809047Abstract: The present invention is to enable avoidance of a reduction in external appearance quality, and stable driving, and prevent diffracted light from being discerned by avoiding a reduction in transmittance and a deterioration in liquid crystal alignment. A light control film is provided with: a first laminate in which an alignment layer is provided; a second laminate in which an alignment layer is provided; a liquid crystal layer which is sandwiched between the first and second laminates and contains liquid crystal molecules; a spacer disposed in the liquid crystal layer to hold the thickness of the liquid crystal layer; and electrodes provided in the first laminate and/or the second laminate, and controls transmitted light by controlling the alignment of the liquid crystal molecules driven by the electrodes. The proportion of an area occupied by the spacer per unit area in a light controllable-region of the liquid crystal layer is 0.1-10%.Type: GrantFiled: November 11, 2016Date of Patent: November 7, 2023Assignee: DAI NIPPON PRINTING CO., LTD.Inventors: Keisuke Miura, Yusuke Nushi, Yusuke Hagiwara
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Patent number: 11774794Abstract: A liquid crystal display panel is provided, which includes a color filter substrate, an array substrate disposed opposite to the color filter substrate, and a liquid crystal layer disposed between the color filter substrate and the array substrate. The array substrate includes: a substrate; an array driving layer disposed on the substrate; an insulating layer disposed on the array driving layer; a pixel electrode disposed on the insulating layer and electrically connected to a thin film transistor in the array driving layer by a via hole on the insulating layer; and a distributed Bragg reflective film disposed on the pixel electrode.Type: GrantFiled: August 31, 2020Date of Patent: October 3, 2023Assignee: TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventors: Yihe Zhang, Zhijun Huang
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Patent number: 11754885Abstract: The present invention is to enable avoidance of a reduction in external appearance quality, and stable driving, and prevent diffracted light from being discerned by avoiding a reduction in transmittance and a deterioration in liquid crystal alignment. A light control film is provided with: a first laminate in which an alignment layer is provided; a second laminate in which an alignment layer is provided; a liquid crystal layer which is sandwiched between the first and second laminates and contains liquid crystal molecules; a spacer disposed in the liquid crystal layer to hold the thickness of the liquid crystal layer; and electrodes provided in the first laminate and/or the second laminate, and controls transmitted light by controlling the alignment of the liquid crystal molecules driven by the electrodes. The proportion of an area occupied by the spacer per unit area in a light controllable-region of the liquid crystal layer is 0.1-10%.Type: GrantFiled: November 11, 2016Date of Patent: September 12, 2023Assignee: DAI NIPPON PRINTING CO., LTD.Inventors: Keisuke Miura, Yusuke Nushi, Yusuke Hagiwara
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Patent number: 11754891Abstract: According to one embodiment, a display device includes, a first inorganic insulating layer, a first metal layer, a wiring group, a first organic insulating layer formed above the first inorganic insulating layer, the first metal layer and the wiring group, a second inorganic insulating layer formed above the first organic insulating layer and includes an opening portion overlapping the first metal layer, and a first transparent conductive layer formed above the second inorganic insulating layer, overlapping the opening portion and electrically connected to the first metal layer. The first organic insulating layer includes a groove portion which exposes the first inorganic insulating layer between the opening portion and the wiring group.Type: GrantFiled: May 6, 2022Date of Patent: September 12, 2023Assignee: JAPAN DISPLAY INC.Inventors: Tomokazu Ishikawa, Masaru Nakakomi
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Patent number: 11747682Abstract: The present application provides a pixel electrode, a display panel, and a display device. The pixel electrode includes a stripe main electrode, a first metal trace, and branch electrodes; the stripe main electrode includes a first main electrode and a second main electrode; the first metal trace is disposed between two main traces parallel to a first direction, and is coupled to the first main electrode and the second main electrode to form four display regions.Type: GrantFiled: September 8, 2020Date of Patent: September 5, 2023Assignee: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd.Inventor: Yinfeng Zhang
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Patent number: 11681191Abstract: A display device includes a first pixel electrode having a first strip electrode and a second strip electrode, a second pixel electrode having a third strip electrode and a fourth strip electrode disposed in the second main pixel, and a light-shielding layer overlapping the first strip electrode. The light-shielding layer has a first opening exposing the second strip electrode, and a second opening exposing the third strip electrode and the fourth strip electrode. A size of the first opening is less than a size of the second opening. A width of the second strip electrode is less than a width of the first strip electrode.Type: GrantFiled: August 29, 2022Date of Patent: June 20, 2023Assignee: Japan Display Inc.Inventor: Koichiro Adachi
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Patent number: 11630336Abstract: A privacy display comprises a polarised output spatial light modulator, reflective polariser, plural polar control retarders and a polariser. In a privacy mode of operation, on-axis light from the spatial light modulator is directed without loss, whereas off-axis light has reduced luminance. Further, display reflectivity is reduced for on-axis reflections of ambient light, while reflectivity is increased for off-axis light. The visibility of the display to off-axis snoopers is reduced by means of luminance reduction and increased frontal reflectivity to ambient light. In a public mode of operation, the liquid crystal retardance is adjusted so that off-axis luminance and reflectivity are unmodified.Type: GrantFiled: March 8, 2021Date of Patent: April 18, 2023Assignee: RealD Spark, LLCInventors: Michael G. Robinson, Graham J. Woodgate, Jonathan Harrold, Robert A. Ramsey
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Patent number: 11609466Abstract: Disclosed in the disclosure are a display panel and a display device. The display panel includes: a first base substrate; a plurality of scan signal lines arranged on a side of the first base substrate; a plurality of data signal lines arranged on sides, facing away from the first base substrate, of the scan signal lines; and first shielding parts arranged on sides, facing away from the scan signal lines, of the data signal lines, wherein each first shielding part is of a strip structure, and in each sub-pixel unit, both sides of the data signal line are each provided with one first shielding part.Type: GrantFiled: September 23, 2021Date of Patent: March 21, 2023Assignees: Wuhan BOE Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.Inventors: Ning Zhu, Peng Jiang, Yanping Liao, Yujie Gao, Jun Liu
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Patent number: 11604388Abstract: According to one embodiment, a display device includes a first substrate including a pixel electrode, a second substrate including a common electrode, a liquid crystal layer located between the first substrate and the second substrate and containing polymer and liquid crystal molecules, and a light emitting element opposed to an end surface of the second substrate, the common electrode being separated from the pixel electrode by a first distance, at a first position, the common electrode being separated from the pixel electrode by a second distance, at a second position more separated from the light emitting element than the first position, the second distance being smaller than the first distance.Type: GrantFiled: September 14, 2021Date of Patent: March 14, 2023Assignee: Japan Display Inc.Inventors: Tenfu Nakamura, Kojiro Ikeda, Kentaro Okuyama
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Patent number: 11598770Abstract: A novel detection system and method is presented, where a two-bead receptor method is used for capturing pathogens, with one type of bead being magnetic and having a size of 3 microns or smaller, and the other type being polymeric and having a size of 3 microns or larger. The first type is used to concentrate a pathogen; the latter is used to create a detectable signal. Fast sensitive detection is achieved by collecting the optical signal created by the distortion of a homeotropically aligned chromonic azo dye in the presence of captured pathogens.Type: GrantFiled: October 16, 2019Date of Patent: March 7, 2023Assignee: Pathogen Systems, Inc.Inventor: Luana Tortora
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Patent number: 11586087Abstract: According to one embodiment, a display device includes a liquid crystal layer between a first substrate and a second substrate. The first substrate includes a wiring line and a pixel electrode. The liquid crystal layer contains a stripe-shaped polymer extending in a first direction and a liquid crystal molecule. The liquid crystal layer contains a first polymer in an area overlapping the wiring line and a second polymer in an area overlapping the pixel electrode. The first polymer includes a first portion extending in a direction different from the first direction. The second polymer includes a second portion extending in a direction different from the first direction. A density of the first portion is higher than a density of the second portion.Type: GrantFiled: August 16, 2021Date of Patent: February 21, 2023Assignee: Japan Display Inc.Inventors: Kojiro Ikeda, Kentaro Okuyama, Tenfu Nakamura
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Patent number: 11567369Abstract: A liquid crystal panel is provided and includes first and second substrates with liquid crystal layer therebetween; and first electrode in display region; second electrode disposed between first electrode and first substrate; and alignment film having alignment direction, wherein first electrode has: pair of electrode branches; slit between pair of electrode branches; first and second connections connecting pair of electrode branches; wherein first electrode has areas including first and second bent portions, main portion disposed between first and second bent portions, wherein first bent portion is adjacent to contact hole of first electrode, wherein first and second bent portions are bent relative to main portion, and wherein direction of first bent portion is substantially parallel to direction of second bent portion.Type: GrantFiled: June 4, 2021Date of Patent: January 31, 2023Assignee: Japan Display Inc.Inventors: Yoshihiro Sakurai, Hironao Tanaka, Harumi Okuno, Takeo Koito
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Patent number: 11550192Abstract: A liquid crystal device including a single or a plurality of pixel elements is provided. Each pixel element includes: a first substrate, a second substrate parallel to the first substrate, a liquid crystal layer disposed between the first substrate and the second substrate, a first plurality of electrodes formed between the first substrate and the liquid crystal layer, a second plurality of electrodes formed between the second substrate and the liquid crystal layer. The first plurality of electrodes and the second plurality of electrodes are composed to generate electric fields in three orthogonal directions, and the electric fields in two of the three orthogonal directions are in-plane electric fields, while the other electric field of the three orthogonal directions is an out-of-plane electric field.Type: GrantFiled: November 10, 2021Date of Patent: January 10, 2023Assignee: National Tsing Hua UniversityInventors: Masahito Ohe, Deng-Yun Zheng
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Patent number: 11543720Abstract: According to one embodiment, a display device includes a liquid crystal layer between a first substrate and a second substrate. The first substrate includes a wiring line and a pixel electrode. The liquid crystal layer contains a stripe-shaped polymer extending in a first direction and a liquid crystal molecule. The liquid crystal layer contains a first polymer in an area overlapping the wiring line and a second polymer in an area overlapping the pixel electrode. The first polymer includes a first portion extending in a direction different from the first direction. The second polymer includes a second portion extending in a direction different from the first direction. A density of the first portion is higher than a density of the second portion.Type: GrantFiled: August 16, 2021Date of Patent: January 3, 2023Assignee: Japan Display Inc.Inventors: Kojiro Ikeda, Kentaro Okuyama, Tenfu Nakamura
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Patent number: 11531237Abstract: A pixel electrode structure and a liquid crystal display panel are provided. The pixel electrode structure includes a trunk electrode, a control electrode, and a connection electrode. The trunk electrode divides the pixel electrode structure into a first pixel electrode region and a second pixel electrode region. The control electrode is close to the first pixel electrode region and away from the second pixel electrode region, and is connected to a second branch electrode of the second pixel electrode region through the connection electrode. Increasing a transmission distance from the control electrode to the pixel electrode in a display region prevents an occurrence of dark streaks.Type: GrantFiled: April 3, 2020Date of Patent: December 20, 2022Assignee: TCL China Star Optoelectronics Technology Co., Ltd.Inventor: Zixiang Zhang
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Patent number: 11513408Abstract: According to one embodiment, a display device includes a liquid crystal layer between a first substrate and a second substrate. The first substrate includes a wiring line and a pixel electrode. The liquid crystal layer contains a stripe-shaped polymer extending in a first direction and a liquid crystal molecule. The liquid crystal layer contains a first polymer in an area overlapping the wiring line and a second polymer in an area overlapping the pixel electrode. The first polymer includes a first portion extending in a direction different from the first direction. The second polymer includes a second portion extending in a direction different from the first direction. A density of the first portion is higher than a density of the second portion.Type: GrantFiled: August 16, 2021Date of Patent: November 29, 2022Assignee: Japan Display Inc.Inventors: Kojiro Ikeda, Kentaro Okuyama, Tenfu Nakamura
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Patent number: 11487179Abstract: The present application relates to an optical device. The present application provides an optical device capable of varying transmittance, and such an optical device can be used for various applications such as eyewear, for example, sunglasses or AR (augmented reality) or VR (virtual reality) eyewear, an outer wall of a building or a sunroof for a vehicle.Type: GrantFiled: April 25, 2018Date of Patent: November 1, 2022Inventors: Ji Hoon Park, Hye Min Yu, Moon Soo Park, Young Shin Lee
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Patent number: 11474387Abstract: A display apparatus (DSP1) includes: a flexible substrate (10) configured to include a region (DA1) and a region (DA2) on its surface; a liquid crystal film (LQ); and a photolytic alignment film configured to be in contact with the liquid crystal film (LQ). A material of the alignment film (AL1) in the region (DA1) is different from a material of the alignment film (AL2) in the region (DA2).Type: GrantFiled: December 8, 2020Date of Patent: October 18, 2022Assignee: Japan Display Inc.Inventors: Koichi Igeta, Hidehiro Sonoda
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Patent number: 11467457Abstract: According to one embodiment, a display device includes a first pixel electrode having a first strip electrode and a second strip electrode, a second pixel electrode having a third strip electrode and a fourth strip electrode disposed in the second main pixel, and a light-shielding layer overlapping the first strip electrode. The light-shielding layer has a first opening exposing the second strip electrode, and a second opening exposing the third strip electrode and the fourth strip electrode. A size of the first opening is less than a size of the second opening. A width of the second strip electrode is less than a width of the first strip electrode.Type: GrantFiled: April 15, 2021Date of Patent: October 11, 2022Assignee: JAPAN DISPLAY INC.Inventor: Koichiro Adachi
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Patent number: 11460733Abstract: According to one embodiment, a display device comprises a first A spacer, a second A spacer, a third A spacer and a fourth A spacer. The first A spacer and the third A spacer are on a first substrate. The second A spacer and the fourth A spacer are on a second substrate. At least one of the first and second substrates is a flexible substrate. The first A spacer and the second A spacer are aligned in a first direction. The third A spacer and the fourth A spacer are aligned in a second direction. Side surfaces of the first A spacer and the second A spacer face in the first direction. Side surfaces of the third A spacer and the fourth A spacer face in the second direction.Type: GrantFiled: September 30, 2020Date of Patent: October 4, 2022Assignee: Japan Display Inc.Inventor: Mitsutaka Okita
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Patent number: 11442315Abstract: To provide a vertical alignment liquid crystal display device capable of achieving a high-definition image display. Tilt directions of liquid crystal molecules when a voltage is applied are within a plane that is in parallel to a border between a first pixel and a second pixel, and are different by 180 degrees between the first and second pixels. The first pixel is constituted with three sub-pixels for R, G, and B arranged in a direction in parallel to the border. Similarly, the second pixel is constituted with three sub-pixels for R, G, and B. The tilt directions of the liquid crystal molecules when a voltage is applied are different by 180 degrees from each other between the sub-pixels for R of the first and second pixels, between the sub-pixels for G of the first and second pixels, and between the sub-pixels for B of the first and second pixels.Type: GrantFiled: August 2, 2021Date of Patent: September 13, 2022Assignee: TIANMA MICROELECTRONICS CO., LTD.Inventor: Kenichi Takatori
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Patent number: 11436974Abstract: A display device includes: a pixel, the pixel having a pixel circuit area and an adjacent area extending around at least a portion of the pixel circuit area; first lines at least partially in the adjacent area and extending in a first direction; second lines at least partially in the adjacent area and extending in a second direction perpendicular to the first direction; and alignment electrode layers extending in the second direction and on the first and second lines. A first number of the alignment electrode layers are in the pixel circuit area, and a second number of the alignment electrode layers are in the adjacent area. The first number is greater than the second number.Type: GrantFiled: October 4, 2021Date of Patent: September 6, 2022Assignee: Samsung Display Co., Ltd.Inventors: Na Hyeon Cha, Sun Kwun Son
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Patent number: 11422400Abstract: This application discloses a display panel and a display device. The display panel includes: a first substrate, provided with a plurality of recessed portions; a second substrate, including a first metal layer; a plurality of photo spacers; a peripheral area; and a second metal layer. The depth of the recessed portion is smaller than a doubled thickness of the second metal layer.Type: GrantFiled: October 31, 2018Date of Patent: August 23, 2022Assignees: HKC CORPORATION LIMITED, CHONGQING HKC OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventor: Zhongnian Liu
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Patent number: 11391992Abstract: A liquid crystal display includes: a first substrate; a second substrate overlapping the first substrate and spaced apart therefrom; a liquid crystal layer between the first substrate and the second substrate and including liquid crystal molecules; a first alignment layer between the first substrate and the liquid crystal layer; and a plurality of protrusions between the first alignment layer and the liquid crystal layer, wherein the first alignment layer includes a photoinitiator, wherein the plurality of protrusions include a polymerization product of the photoinitiator, a reactive mesogen, and a vertical alignment additive, and the vertical alignment additive may be less reactive than the photoinitiator.Type: GrantFiled: May 16, 2018Date of Patent: July 19, 2022Assignee: SAMSUNG DISPLAY CO., LTD.Inventors: Oh Jeong Kwon, Ka Eun Kim, Tae Min Kim, Duck Jong Suh, Bong-Sung Seo, Seul Gee Lee
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Patent number: 11361720Abstract: A grayscale voltage output unit outputs, for a signal line including a disconnection location, a first grayscale voltage to a first signal line portion, the first grayscale voltage being corrected to be lower than the grayscale voltage to be output to the signal line on the basis of the location of the disconnection location and the wiring resistance of the signal line, and the grayscale voltage output unit outputs a second grayscale voltage to a second signal line portion, the second grayscale voltage being corrected from the grayscale voltage to be output to the signal line on the basis of the location of the disconnection location, the wiring resistance of the signal line, and the wiring resistance of spare wiring. Thereby, a display device with a simple configuration capable of reducing luminance deviation along a signal line with a disconnection location is provided.Type: GrantFiled: July 13, 2018Date of Patent: June 14, 2022Assignee: SAKAI DISPLAY PRODUCTS CORPORATIONInventor: Shiro Miyawaki
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Patent number: 11353762Abstract: A display device comprises a first pixel including a first transistor including a first control electrode, a first input electrode, and a first output electrode spaced apart from the first input electrode and a first pixel electrode connected to the first output electrode, a second pixel adjacent to the first pixel in a first direction and including a second transistor including a second control electrode, a second input electrode, and a second output electrode spaced apart from the second input electrode and a second pixel electrode connected to the second output electrode, and a scan line for providing a scan signal to the first and second control electrodes. The first and second input electrodes are disposed in a second direction intersecting the first direction from the first and second output electrodes, respectively, and the first input electrode includes a first extension portion extending toward the second output electrode.Type: GrantFiled: February 19, 2021Date of Patent: June 7, 2022Inventors: Dong Hee Shin, Geunho Lee, Yonghee Lee
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Patent number: 11333940Abstract: In a display device having high reliability, even if being a narrow framing type, and a method for manufacturing thereof, having a display panel, being made up with a first substrate 101 and a second substrate 201, which are adhered with using a seal 301, a main SOC 302 is disposed like a wall, on a peripheral end portion of the first substrate 101 and the second substrate 201, and the seal 301 is disposed inwardly of the main SOC 302. Also, in a method for manufacturing thereof, the main SOC 302 is formed in a region including a cutting plane between the display panel regions neighboring with, and on the cutting plane is made the cutting thereof.Type: GrantFiled: April 6, 2021Date of Patent: May 17, 2022Assignee: Japan Display Inc.Inventor: Eisuke Hatakeyama