Alignment Layer Patents (Class 349/123)
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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
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Patent number: 11327365Abstract: The present application provides an apparatus for fabricating a display substrate of a liquid crystal display panel. The apparatus includes a support for receiving a mother substrate having a plurality of display substrate units and a photoalignment material layer on the plurality of display substrate units; a plurality of polarizers including a first polarizer having a first light transmission axis, and a second polarizer having a second light transmission axis non-parallel to the first light transmission axis; and a light source for irradiating a light on a first display substrate unit of the plurality of display substrate units through the first polarizer and on a second display substrate unit of the plurality of display substrate units through the second polarizer.Type: GrantFiled: April 4, 2018Date of Patent: May 10, 2022Assignees: Hefei Xinsheng Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.Inventors: Chengyong Zhan, Ting Wan, Jinliang Hu, Wenming Ren
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Patent number: 11326101Abstract: A liquid crystal panel and a manufacture method thereof, a liquid crystal display device are disclosed. The manufacture method of a liquid crystal panel includes: providing a first substrate, a second substrate and a liquid crystal layer between the first substrate and the second substrate, wherein the liquid crystal layer includes a liquid crystal material and photopolymerizable monomers; and exposing the liquid crystal layer to allow the photopolymerizable monomers to be polymerized at a position of exposing to form a columnar spacer.Type: GrantFiled: November 17, 2017Date of Patent: May 10, 2022Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE DISPLAY TECHNOLOGY CO., LTD.Inventors: Xibin Shao, Feifei Wang, Hongming Zhan, Ping Song, Deqiang Liu
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Patent number: 11299675Abstract: A polar compound having high chemical stability, high capability of aligning liquid crystal molecules, high solubility in a liquid crystal composition, and a large voltage holding ratio when the compound is used in a liquid crystal display device; and a composition containing the compound. The compound is represented by formula (1).Type: GrantFiled: July 13, 2018Date of Patent: April 12, 2022Assignees: JNC CORPORATION, JNC PETROCHEMICAL CORPORATIONInventors: Tomohiro Yano, Fumitaka Kondo, Hiroki Sago
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Patent number: 11281051Abstract: A display panel and a method for fabricating the same are provided. The display panel includes a first substrate, a first protrusion, a first liquid crystal layer, a third liquid crystal layer, a second liquid crystal layer, a second protrusion, and a second substrate in order from top to bottom. The first liquid crystal layer, the second liquid crystal layer, and the third liquid crystal layer include negative type liquid crystal molecules. An absolute value of a dielectric anisotropy parameter of the liquid crystal molecules in the first liquid crystal layer and an absolute value of a dielectric anisotropy parameter of the liquid crystal molecules in the second liquid crystal layer are both greater than an absolute value of a dielectric anisotropy parameter of the liquid crystal molecules in the third liquid crystal layer.Type: GrantFiled: May 21, 2020Date of Patent: March 22, 2022Assignee: TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTDInventor: Zhongtian Chen
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Patent number: 11231613Abstract: A display apparatus includes a backlight, a first polarizer, a light controlling panel, a second polarizer, a display panel, and a third polarizer sequentially arranged along a direction. A transmission axis of the first polarizer and a transmission axis of the second polarizer are substantially parallel, and the transmission axis of the second polarizer and a transmission axis of the third polarizer are substantially perpendicular. A set of the first polarizer, the light controlling panel, and the second polarizer has a transmittance, and the transmittance has a maximum value when the light controlling panel is not enabled.Type: GrantFiled: March 9, 2021Date of Patent: January 25, 2022Assignee: Au Optronics CorporationInventors: Guan-Yu Chen, Wei-Ming Cheng, Min-Hsuan Chiu
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Patent number: 11231625Abstract: A liquid crystal panel includes a first substrate, a second substrate, and a liquid crystal layer. A first electrode layer and a first alignment film are disposed on a side of the first substrate facing the second substrate. A second electrode layer and a second alignment film are disposed on a side of the second substrate facing the first substrate. At least one auxiliary electrode layer is disposed between the first alignment film and the second alignment film, and the auxiliary electrode layer is disposed in the liquid crystal layer close to the first alignment film and/or the second alignment film.Type: GrantFiled: December 20, 2019Date of Patent: January 25, 2022Assignee: TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventor: Zhongtian Chen
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Patent number: 11215899Abstract: Provided is an optoelectronic element including a first substrate, a first electrode on the first substrate, a first lens pattern disposed on the first electrode and including a liquid crystal and a black dye molecule, a second lens pattern disposed on the first lens pattern, and a second electrode on the second lens pattern, wherein the black dye molecule includes about 1 to 4 azo groups and about 2 to 5 aromatic cyclic compounds.Type: GrantFiled: August 19, 2020Date of Patent: January 4, 2022Assignee: Electronics and Telecommunications Research InstituteInventors: Gi Heon Kim, Yong Hae Kim, Chi-Sun Hwang
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Patent number: 11215877Abstract: According to an embodiment of the present disclosure, it is provided a display apparatus including a first substrate, a second substrate and a sealant. The back surface of the first substrate is provided with a metal wiring. The metal wiring is provided with a hollow-out region. The metal wiring is arranged in a curved shape.Type: GrantFiled: November 14, 2018Date of Patent: January 4, 2022Assignees: CHONGQING HKC OPTOELECTRONICS TECHNOLOGY CO., LTD., HKC CORPORATON LIMITEDInventor: Shishuai Huang
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Patent number: 11204529Abstract: A display panel and a method for manufacturing a display device are provided. The display panel includes an array substrate, a color film substrate assembled with the array substrate, and liquid crystal molecules sealed between the array substrate and the color film substrate. The array substrate comprises a pixel electrode and a common electrode, orthographic projections of the pixel electrode and the common electrode on the base substrate of the array substrate have an overlapping region, and the liquid crystal molecules have an azimuth angle of 90 degree. As a result, the display panel can have a faster response speed and is applicable to scenarios that require fast and frequent image switching.Type: GrantFiled: March 21, 2019Date of Patent: December 21, 2021Assignee: BOE TECHNOLOGY GROUP CO., LTD.Inventors: Shunhang Zhang, Shiyu Zhang, Yoonsung Um, Yunsik Im, Feng Liao
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Patent number: 11194196Abstract: The application provides an array substrate and a liquid crystal display panel. The array substrate includes a substrate, a driving circuit layer, a color resist layer, and a pixel electrode layer which are disposed in a stack. The color resist layer includes a flow guiding portion and a first via hole having an aperture diameter greater than a threshold. The flow guiding portion is connected to at least part of the first via hole and positioned on at least one of an inside and an outside of the first via hole, and a flow guiding surface of the flow guiding portion is connected to a part of an edge of the aperture of the first via hole. According to the present application, the shape of the aperture is changed so that an alignment liquid does not accumulate when flowing through.Type: GrantFiled: December 26, 2019Date of Patent: December 7, 2021Inventors: Yun Yu, Qingyong Zhu
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Patent number: 11169418Abstract: The present invention provides a liquid crystal alignment device and a method of operating the same. The liquid crystal alignment device includes: a stage; a plurality of slide rails aligned parallel to each other, extending in a first direction and arranged above the stage; and a plurality of ultraviolet lamp tubes aligned parallel to each other and extending in a second direction, and opposite ends of a long axis of each of the plurality of ultraviolet lamp tubes are respectively installed on any two of the plurality of slide rails through the plurality of rollers, such that the plurality of ultraviolet lamp tubes have adjustable intervals in the first direction, wherein the second direction and the first direction are perpendicular to each other.Type: GrantFiled: December 19, 2019Date of Patent: November 9, 2021Assignee: TCL China Star Optoelectrenics Technology Co., Ltd.Inventor: Rentang Zhao
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Patent number: 11156887Abstract: This application discloses a display panel and a display apparatus. The display panel includes a display area, a seal, a first metal wire, a signal line, a channel and a retaining wall. The seal is correspondingly arranged in a nondisplay area of the display panel. The first metal wire is correspondingly arranged between the display area and the seal. The signal line bridges over the first metal wire and is fed into the display area. The channel is located at a bridging connection position of the first metal wire and the signal line. The retaining wall is arranged at a position corresponding to the channel, beside the first metal wire.Type: GrantFiled: December 10, 2018Date of Patent: October 26, 2021Assignees: HKC CORPORATION LIMITED, CHONGQING HKC OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventor: Yunqin Hu
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Patent number: 11126043Abstract: 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: December 8, 2020Date of Patent: September 21, 2021Assignee: Japan Display Inc.Inventor: Motoharu Miyamoto
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Patent number: 11119374Abstract: 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: March 4, 2020Date of Patent: September 14, 2021Assignee: Japan Display Inc.Inventors: Kojiro Ikeda, Kentaro Okuyama, Tenfu Nakamura
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Patent number: 11112654Abstract: A liquid crystal display device, which includes a first substrate and a second substrate disposed to face each other with a liquid crystal sandwiched therebetween. The first substrate is an electrode-provided substrate having a first electrode and a plurality of second electrodes overlaid on the first electrode via an insulating film, formed on a pixel region on a surface on the liquid crystal side, where one of the first electrode and the second electrodes is a pixel electrode and the other is a counter electrode, having a first liquid crystal alignment film formed on the surface on the liquid crystal side of the first substrate covered with the second electrodes. The second substrate is a substrate having a second liquid crystal alignment film formed on a surface on the liquid crystal side, the second liquid crystal alignment film containing a photosensitive side chain type polymer which develops liquid crystallinity.Type: GrantFiled: September 28, 2016Date of Patent: September 7, 2021Assignee: NISSAN CHEMICAL INDUSTRIES, LTD.Inventors: Atsuhiko Mandai, Naoki Sakumoto
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Patent number: 11114646Abstract: An organic light emitting display panel and a display device are provided. The organic light emitting display panel includes a substrate, a plurality of organic light emitting diode elements in an array on one side of the substrate, a phase compensation film on a side of the organic light emitting diode elements away from the substrate, and a circular polarizer on a side of the phase compensation film away from the organic light emitting diode elements, wherein the phase compensation film compensates for phase retardation amounts of the circular polarizer at all viewing angles, so that a phase retardation amount of light obliquely passing through the circular polarizer and the phase compensation film is substantially consistent with that of light perpendicularly passing through the circular polarizer and the phase compensation film.Type: GrantFiled: May 21, 2019Date of Patent: September 7, 2021Assignees: Chengdu BOE Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.Inventors: Qian Li, Bing Zhang
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Patent number: 11067855Abstract: A method for aligning a layer of photopolymers includes projecting light onto a rotating optical element and asymmetrically focusing the light transmitted through the rotating optical element onto a layer of photopolymers. The asymmetrically focused light is swept across different regions of the layer of photopolymers while a direction of polarization in the light is varied due to the rotation of the first optical element, producing a pattern of orientations for the layer of photopolymers. The method can be incorporated in a raster-scanning process to produce an alignment pattern in a layer of photopolymers with a large surface area, and is faster and provides improved precision and/or uniformity of the alignment pattern compared to currently available methods. An apparatus for aligning the layer of photopolymers is also disclosed.Type: GrantFiled: May 8, 2019Date of Patent: July 20, 2021Assignee: Facebook Technologies, LLCInventors: Babak Amirsolaimani, Ying Geng, Scott Charles McEldowney
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Patent number: 11069752Abstract: A display device and a manufacturing method which minimize a difference in touch sensitivity between regions of a display device are disclosed. The display includes a display area, a color filter area disposed over the display area, and a touch area disposed between the display area and the color filter area. The display area includes a substrate, an insulating layer disposed over the substrate, first and second electrodes, partition walls disposed between the insulating layer and the second electrode, an emission layer disposed in an opening formed by the first and second electrodes and adjacent partition walls, and a spacer disposed on at least one of the partition walls. The color filter area includes a first light blocking member disposed at a region overlapping the spacer and including at least two color filters stacked on each other.Type: GrantFiled: January 22, 2020Date of Patent: July 20, 2021Assignee: SAMSUNG DISPLAY CO., LTD.Inventor: Hyeon Bum Lee
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Patent number: 11069977Abstract: A liquid crystal alignment agent according to the present invention includes: an alignment film forming material; and an organic solvent. The organic solvent contains a compound which has at least two functional groups selected from the group consisting of a methylene group, a methyl group, an ether group, a ketone group, and a hydroxyl group, and does not contain a nitrogen atom.Type: GrantFiled: July 12, 2017Date of Patent: July 20, 2021Assignee: SHARP KABUSHIKI KAISHAInventor: Isamu Miyake
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Patent number: 11053442Abstract: The invention relates to a liquid crystal mixture characterised in that it comprises one or more photoreactive mesogens of formula I wherein the parameters and groups occurring are defined as indicated in claim 1, to a process for the fabrication of liquid crystal displays using these liquid crystal mixtures and to a liquid crystal display obtainable by this process. The invention further relates to new compounds of formula I.Type: GrantFiled: December 2, 2016Date of Patent: July 6, 2021Assignee: MERCK PATENT GMBHInventors: Kevin Adlem, Alex Davis, Joseph Sargent, Ian Charles Sage, Edward Plummer, Izumi Saito, Rocco Fortte, Helga Haas, Lars Lietzau
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Patent number: 11036088Abstract: According to one embodiment, a liquid crystal display device includes a first substrate, a second substrate disposed to oppose the first substrate, a layer of liquid crystal located between the first substrate and the second substrate, and an alignment film disposed on the first substrate so as to be in contact with the layer of the liquid crystal. The liquid crystal has a refractive-index anisotropy ?n of 0.11 or more, the layer of the liquid crystal has a thickness d of 2.5 ?m or less, and a product ?nd of the refractive-index anisotropy ?n and the thickness d is 0.20 or more but 0.31 or less. The transmissivity of light having a wavelength of 450 nm in the first substrate and the alignment film is 85% or more but 97% or less.Type: GrantFiled: September 27, 2018Date of Patent: June 15, 2021Assignee: Japan Display Inc.Inventors: Hidehiro Sonoda, Masahiro Kosuge, Yasushi Tomioka, Takenori Hirota, Noboru Kunimatsu
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Patent number: 11030785Abstract: Provided is a display device including a first display unit, a second display unit arranged on a back side of the first display unit, a generation unit configured to perform predetermined image processing on first image data to generate second image data, and a control unit configured to select one of a plurality of display modes including a first display mode on which the first display unit displays an image based on the first image data and the second display unit displays an image based on the second image data, and a second display mode on which the first display unit and the second display unit display the image based on the first image data.Type: GrantFiled: April 12, 2019Date of Patent: June 8, 2021Assignee: CANON KABUSHIKI KAISHAInventor: Masahiro Kamiyoshihara
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Patent number: 11022847Abstract: Provided is a liquid crystal display in lateral-electric-field mode that improves faulty display resulting from static electricity without, in particular, degrading display quality or considerably increasing costs. A liquid crystal display in one aspect of the present invention includes the following: an array substrate and counter substrate processed into a thin plate that is less than 0.5 mm thick; a liquid crystal layer sealed between this pair of substrates; and an alignment film disposed on the counter substrate. The alignment film has a photoconductivity in which the volume resistance value of the alignment film under light irradiation changes to at least not greater than 1/10 of the volume resistance value of the alignment film under no light irradiation.Type: GrantFiled: October 29, 2019Date of Patent: June 1, 2021Assignee: Mitsubishi Electric CorporationInventor: Kazushi Kiyota
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Patent number: 11003007Abstract: A light modulating device including: a light transmissive plate having a curved surface; a light modulating cell; and an optically transparent adhesive film which is disposed between the curved surface of the light transmissive plate and the light modulating cell and attaches one side of the light modulating cell to the curved surface of the light transmissive plate.Type: GrantFiled: March 21, 2017Date of Patent: May 11, 2021Assignee: DAI NIPPON PRINTING CO., LTD.Inventor: Yusuke Hagiwara
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Patent number: 10998348Abstract: A display apparatus includes a substrate including a display area, in which gate lines and data lines are disposed, and a non-display area, in which a gate driver and a pad part are disposed. A gate insulating layer is on the substrate. Data link lines are on the gate insulating layer to connect data pads of the pad part to the data lines, and an interlayer insulating layer is on the data link lines. Gate voltage supply lines are on the interlayer insulating layer to connect the gate driver with the gate lines. A protective layer is on the interlayer insulating layer to cover the gate voltage supply lines, the protective layer including an opening for exposing the interlayer insulating layer of an area overlapping the data link lines.Type: GrantFiled: July 2, 2019Date of Patent: May 4, 2021Assignee: LG Display Co., Ltd.Inventors: Hyun-Chul Um, Jong-Chan Park
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Patent number: 10976578Abstract: 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: January 24, 2019Date of Patent: April 13, 2021Assignee: RealD Spark, LLCInventors: Michael G. Robinson, Graham J. Woodgate, Jonathan Harrold, Robert A. Ramsey
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Patent number: 10969630Abstract: A liquid crystal display apparatus according to an embodiment of the present invention includes a first and a second substrate, and a vertical alignment type liquid crystal layer. The first substrate has a pixel electrode and a first photo alignment film. The second substrate has a counter electrode and a second photo alignment film. Each pixel has a plurality of liquid crystal domains having different reference alignment directions. The plurality of liquid crystal domains include a first liquid crystal domain, the reference alignment direction of the first liquid crystal domain being a first direction. A portion of a plurality of edges of the pixel electrode that is close to the first liquid crystal domain includes a first edge portion, the angle between an azimuth angle direction perpendicular to the first edge portion and pointing toward the inside of the pixel electrode, and the first direction, being greater than 90°.Type: GrantFiled: January 27, 2017Date of Patent: April 6, 2021Assignee: SAKAI DISPLAY PRODUCTS CORPORATIONInventor: Mitsuaki Hirata
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Patent number: 10969633Abstract: A method of fabricating a display panel includes providing a first substrate and a second substrate, forming an alignment material layer on one of the first substrate and the second substrate and patterning the alignment material layer to form an individual central portion, forming a hydrophobic surface extending from an edge of the individual central portion toward an edge of the one of the first substrate and the second substrate, forming a sealant material on the one of the first substrate and the second substrate, dropping a display medium material on the individual central portion, assembling the first substrate and the second substrate with the sealant material and curing the sealant material to form a sealant. A gap separates the sealant material from the individual central portion and the hydrophobic surface extends in the gap. The display medium material is restricted by the hydrophobic surface and does not contact the sealant material.Type: GrantFiled: March 30, 2020Date of Patent: April 6, 2021Assignee: Himax Display, Inc.Inventors: Po-Hung Pan, Hsing-Lung Wang
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Patent number: 10948781Abstract: 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: December 17, 2019Date of Patent: March 16, 2021Assignee: Japan Display Inc.Inventor: Keisuke Takano
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Patent number: 10948779Abstract: An optical waveplate is provided. The optical waveplate includes a positive-C film including a first liquid crystal (“LC”) layer. Tilt angles of LC molecules vary along a thickness direction of the first LC layer. The optical wave also includes an LC cell disposed at a first side of the positive-C film and including a second LC layer aligned in an optically compensated bend (“OCB”) mode. The optical waveplate also includes a positive-A film disposed at a second side of the positive-C film. The optical waveplate further includes a negative biaxial retardation film disposed between the positive-A film and the positive-C film. The LC cell is switchable between at least two predetermined states.Type: GrantFiled: March 23, 2020Date of Patent: March 16, 2021Assignee: FACEBOOK TECHNOLOGIES, LLCInventors: Afsoon Jamali, Yingfei Jiang
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Patent number: 10942397Abstract: A spatial phase modulator and a method for producing a spatial phase modulator are provided. The spatial phase modulator includes a first substrate and a second substrate that are meshed together, and a liquid crystal layer disposed between the two substrates, where a transparent electrode layer and a first alignment and guiding layer are disposed in a cascading manner on a side that is of the first substrate and that faces the liquid crystal layer; and an electrode layer and an insulation medium glass layer are disposed in a cascading manner on a side that is of the second substrate and that faces the liquid crystal layer, where the insulation medium glass layer has an inclined serration structure on a side facing the liquid crystal layer.Type: GrantFiled: October 30, 2017Date of Patent: March 9, 2021Assignees: Huawei Technologies Co., Ltd., Cambridge Enterprise LimitedInventors: Liangjia Zong, Daping Chu, Haining Yang
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Patent number: 10928682Abstract: A display device and a method of manufacturing the same are disclosed. The display device comprises a thin film transistor on a substrate, a protective film on the thin film transistor, and an alignment film on the protective film. The protective film includes one or more protective films, and a protective film adjacent to the alignment film among the one or more protective films has a silicon content higher than a nitrogen content. Thus, it is possible to provide a display device capable of reducing image sticking or flicker.Type: GrantFiled: February 19, 2019Date of Patent: February 23, 2021Assignee: LG Display Co., Ltd.Inventors: HaJoong Lee, Kyungmin Yeo
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Patent number: 10921652Abstract: A display apparatus includes a first base substrate (BS), a second BS facing the first BS, a liquid crystal layer disposed between the first BS and the second BS, a color filter layer, pixel electrodes, a light-shielding column spacer, a common electrode, and trap electrodes. The first BS includes a display area and a non-display area. The color filter layer is disposed on the first BS in the display area. The pixel electrodes are disposed on the color filter layer. The light-shielding column spacer is disposed on the first BS in the non-display area and includes a light-shielding material. The common electrode is disposed on the second BS and faces the pixel electrodes. The liquid crystal layer is disposed between the common electrode and the pixel electrodes. The trap electrodes are disposed on a lower portion of the light-shielding column spacer and face the common electrode.Type: GrantFiled: January 21, 2019Date of Patent: February 16, 2021Assignee: Samsung Display Co., Ltd.Inventors: Doyeong Park, Byoungsun Na, Yoomi Ra, Kyusu Ahn, Richard James, Kookhyun Choi
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Patent number: 10914966Abstract: The disclosure discloses a manufacturing method of a liquid crystal display grating. The method includes preparing a substrate, depositing a transparent film layer on the substrate, patterning the transparent film layer for producing a plurality of containing grooves, depositing a liquid crystal alignment film in the containing grooves, injecting liquid crystal molecules in the containing grooves, aligning and packaging the liquid crystal molecules. The disclosure can achieve 3D display by the method above.Type: GrantFiled: April 25, 2017Date of Patent: February 9, 2021Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.Inventors: Yanhong Meng, Zhixiong Jiang