Aligning Liquid Crystal With Means Other Than Alignment Layer Patents (Class 349/191)
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Patent number: 12222607Abstract: The disclosure provides a liquid crystal display panel and a display apparatus. The liquid crystal display panel of the disclosure includes: first and second substrates assembled to form a cell, a plurality of main spacers therebetween, and an auxiliary spacer around at least a portion of the main spacers. Height of the auxiliary spacer is greater than or equal to that of the main spacer. The display panel further includes: pillows on side of the first substrate close to the second substrate and each abutting against a corresponding main spacer. An orthographic projection of the main spacer on the first substrate falls within an orthographic projection of the pillow on the first substrate, and an orthographic projection of the auxiliary spacer on the first substrate does not overlap with the orthographic projection of the pillow on the first substrate.Type: GrantFiled: May 27, 2022Date of Patent: February 11, 2025Assignee: BOE TECHNOLOGY GROUP CO., LTD.Inventors: Yong Yu, Shi Shu, Chuanxiang Xu, Yang Yue, Xiang Li, Shaohui Li, Ce Ning, Jinchao Zhang, Qi Yao, Lizhong Wang
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Patent number: 12025884Abstract: A display device includes a first substrate, a first alignment layer, a second substrate, a second alignment layer, and a display medium. The first alignment layer is disposed on the first substrate. The second substrate is disposed opposite to the first substrate. The second alignment layer is disposed on the second substrate, and the first and second alignment layers are located between the first and second substrates. The display medium is located between the first and second alignment layers, where a surface of the first alignment layer facing the display medium and a surface of the second alignment layer facing the display medium have topographies with irregular areas surrounded by micro-structures. Besides, a manufacturing method of the display device is also provided.Type: GrantFiled: October 3, 2022Date of Patent: July 2, 2024Assignee: AUO CorporationInventor: Yi-Ling Lin
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Patent number: 11131888Abstract: In a display panel, all of a plurality of directors of liquid crystal composition composing the liquid crystal layer are essentially perpendicular to the first alignment film and the second alignment film in the absence of applied voltage. A liquid crystal layer included in each of a plurality of unit pixels arranged in a matrix along a row direction and along a column direction has a single alignment state. A director of liquid crystal composition located at a central portion in a first unit pixel that is one of the plurality of unit pixels is in an opposite orientation with respect to a director of liquid crystal composition located at a central portion in a second unit pixel that is in a same row or a same column as the first unit pixel.Type: GrantFiled: May 22, 2017Date of Patent: September 28, 2021Assignee: SAKAI DISPLAY PRODUCTS CORPORATIONInventors: Atsuko Maeda, Shintaro Yamada, Katsumi Kondo, Hideki Nakagawa, Toshihiro Yamashita
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Patent number: 10338288Abstract: Due to the present invention, a reflection member including two or more layers of fixed cholesteric liquid crystal phases, in which the two or more layers of fixed cholesteric liquid crystal phases exhibit central wavelengths of mutually different selective reflection, and the two or more layers of fixed cholesteric liquid crystal phases include a layer formed of a composition including a disc-like liquid crystal compound and a layer formed of a composition including a rod-like liquid crystal compound and a projected image display member and a heat shield member which include the reflection member are provided. The reflection member of the present invention has favorable selective reflection characteristics with respect to oblique incidence rays.Type: GrantFiled: September 9, 2016Date of Patent: July 2, 2019Assignee: FUJIFILM CorporationInventor: Mitsuyoshi Ichihashi
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Patent number: 9999133Abstract: A flexible printed circuit board includes a base substrate, a first pad part on the base substrate, a second pad part on the base substrate, and a line part on the base substrate, the line part electrically connecting the first pad part and the second pad part. The base substrate includes a first body part including the first pad part thereon and having a curved edge, a second body part including the second pad part thereon, and a connection part between the first pad part and the second pad part and having a width decreasing as a distance from the first body part increases and a distance from the second body part decreases.Type: GrantFiled: September 30, 2016Date of Patent: June 12, 2018Assignee: Samsung Display Co., Ltd.Inventors: Jaehyung Cho, Ahyoung Son, Heesoon Jeong, Myungho Lee
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Patent number: 9563079Abstract: A method for manufacturing alignment films of liquid crystal panel includes the steps of: injecting a liquid crystal mixture containing liquid crystal molecules and liquid crystal reactive monomers to form a liquid crystal cell; placing the liquid crystal cell in a first reaction machine to subject the same to a voltage, ultraviolet radiation, and a temperature, so that the liquid crystal reactive monomers produce a polymerization reaction; moving the liquid crystal cell to a second reaction machine after a first preset time period in order to subject the same to a voltage and a temperature to continue the polymerization reaction, and forming alignment films on inner surfaces of a first substrate and a second substrate, respectively.Type: GrantFiled: February 12, 2015Date of Patent: February 7, 2017Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventors: Rentang Zhao, Yanjun Song, Chung-Ching Hsieh
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Patent number: 8999462Abstract: The present invention provides a photosensitive monomer of which hydrogen atoms of benzene ring of a hard core are substituted by fluorine atoms to increase the electronegativity of the hard core, so that the curing voltage of the curing process is reduced. The photosensitive monomer of the present invention not only reduces the curing voltage and curing time of the curing process of liquid crystal panels, but also increases the pretilt angle of liquid crystal molecules to reduce the response time of a liquid crystal display, so that image sticking and MURA phenomenon are reduced.Type: GrantFiled: November 15, 2012Date of Patent: April 7, 2015Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.Inventors: Sikun Hao, Chung-Ching Hsieh, Chung Yi Chiu
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Patent number: 8994910Abstract: In a display panel and a method of manufacturing the display panel, the display panel includes a display substrate including a first electrode and a second electrode insulated from the first electrode and disposed on the first electrode, an opposite substrate including a third electrode facing the second electrode, and a liquid crystal layer interposed between the display substrate and the opposite substrate. The liquid crystal layer includes liquid crystal molecules, a reactive mesogen polymer, and nano-rods.Type: GrantFiled: June 15, 2012Date of Patent: March 31, 2015Assignees: Samsung Display Co., Ltd., Institute for Research & Industry Cooperation, PNUInventors: Soon-Joon Rho, Hyeok-Jin Lee, Ji-Hong Bae, Jun-Ha Park, Hye-Lim Jang, Tae-Hoon Yoon, Dong-Han Song, Ki-Han Kim, Jung-Wook Kim
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Patent number: 8993076Abstract: The present invention provides a liquid crystal additive, a liquid crystal composition and a liquid crystal panel thereof. The liquid crystal additive of the present invention has a higher clear point, so that adding the liquid crystal additive into a liquid crystal composition of a liquid crystal panel can omit the process of forming alignment films to reduce manufacturing costs and time of liquid crystal panels; meanwhile, the MURA phenomenon due to the different effects of liquid crystal molecules and liquid crystal reactive monomers on alignment films is avoided, so as to improve the uniformity of liquid crystal panel.Type: GrantFiled: November 23, 2012Date of Patent: March 31, 2015Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.Inventor: Houng-Chieh Lu
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Publication number: 20150085241Abstract: The present invention provides a liquid crystal horizontal orientation agent, a horizontal orientation type liquid crystal composition, a horizontal orientation type LCD device and a method of fabricating the horizontal orientation type LCD device. In one embodiment, the liquid crystal molecule is horizontally oriented by the liquid crystal horizontal orientation agent without the rubbed orientation layer.Type: ApplicationFiled: September 22, 2014Publication date: March 26, 2015Applicants: YAMAGATA UNIVERSITY, LG DISPLAY CO., LTD.Inventors: Momoi YUICHI, Mu-Sun KWAK, Koda TOMONORI, Yonetake KOICHIRO, Haba OSAMU
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Patent number: 8953140Abstract: A method for setting a pre-tilt angle of liquid crystal molecules includes (1) providing liquid crystal material, a CF substrate, and a TFT substrate; (2) arranging the substrates to form a gap therebetween in which the liquid crystal material is filled to form a liquid crystal cell; (3) providing a drive control circuit that generates driving voltages and connecting the drive control circuit to the TFT substrate; (4) providing a small-amplitude oscillation device and an irradiation intensity variable ultraviolet light source and positioning the liquid crystal cell on the oscillation device; (5) activating the oscillation device to cause the liquid crystal cell to make small-amplitude oscillation and conducting on the drive control circuit to supply driving voltages to drive the liquid crystal material, the ultraviolet light source being applied to irradiate the liquid crystal cell with ultraviolet lights of different intensities; and (6) repeating step (5) for at least one time.Type: GrantFiled: November 20, 2012Date of Patent: February 10, 2015Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.Inventors: Xinhui Zhong, Xing Feng
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Patent number: 8913204Abstract: A method of driving a bi-stable chiral splay nematic mode liquid crystal display device including first and second substrates, a liquid crystal layer between the first and second substrates, first and second reset electrodes on one of inner surfaces of the first and second substrates, a pixel electrode on the inner surface of the first substrate and a common electrode on the inner surface of the second substrate includes: applying a data voltage and a common voltage to the pixel electrode and the common electrode, respectively, such that a vertical electric field is generated and the liquid crystal layer transitions from a splay state to a ?-twist state during a writing period; and floating the pixel electrode and the common electrode such that the liquid crystal layer keeps the ?-twist state and displays a present image during a memory period.Type: GrantFiled: May 3, 2011Date of Patent: December 16, 2014Assignee: LG Display Co., Ltd.Inventors: Dong-Guk Kim, Wook-Sung Kim
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Publication number: 20140362316Abstract: The liquid crystal display device includes a transparent electrode formed in a plan form and a strip or strips transparent electrode disposed thereon via an insulating film, and controls display by rotating the liquid crystal aligned substantially in parallel to a substrate within a plane that is substantially in parallel to the substrate by an electric field between the both electrodes. Each pixel constituting the display is divided into two regions, the extending directions of the strip electrode in each of the regions are orthogonal, the alignment azimuths of the liquid crystal of each of the regions are orthogonal, and the angles formed between the extending directions of the strip electrode and the alignment azimuth of the liquid crystal are the same.Type: ApplicationFiled: August 21, 2014Publication date: December 11, 2014Applicant: NLT TECHNOLOGIES, LTD.Inventors: Shinichi NISHIDA, Ken SUMIYOSHI, Hideki ITO, Mitsuhiro SUGIMOTO, Hidenori IKENO
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Patent number: 8901525Abstract: The present invention provides a panel alignment apparatus and a panel alignment method. The panel alignment apparatus comprises an image detection device and a first clamp. The method comprises the following steps: utilizing the image detection device to detect a position of a display panel, and to calculate a position adjustment value; and utilizing the first clamp to hold the standing display panel, and to rotate the display panel according to the position adjustment value for adjusting a position of the display panel. The present invention can utilize the clamps to precisely align the standing display panel.Type: GrantFiled: May 12, 2011Date of Patent: December 2, 2014Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.Inventors: Jiasheng Lu, Teng-chou Wei
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Patent number: 8896804Abstract: The present invention provides a method for termination detection of optical alignment of liquid crystal material, which includes: under influence of electrical field, irradiating light on liquid crystal material so that reactive monomers in liquid crystal material polymerizing; detecting a residual amount or a thickness change value of the reactive monomers in liquid crystal material to determine detected residual amount of reactive monomers or thickness change value in liquid crystal box reaching a default value; when reaching default value, terminating optical alignment of liquid crystal material. The present invention also provides a device for termination detection of optical alignment of liquid crystal material. Through detecting termination of optical alignment, the present invention realizes automatic control of irradiation time in optical alignment to reduce the effect of individual glass substrate variation on optical alignment to avoid affecting reaction process of alignment on reactive monomer.Type: GrantFiled: November 27, 2012Date of Patent: November 25, 2014Assignee: Shenzhen China Star Optoelectronics Technology Co., LtdInventor: Liang Xu
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Patent number: 8866981Abstract: The invention provides a vertical alignment liquid crystal panel, which includes a first glass substrate, a second glass substrate, and a liquid crystal layer that includes negative liquid crystal containing liquid crystal molecules having a pre-tilt angle of 0°-7°, chiral agent, and a photo- or heat-polymerizable polymer. The first glass substrate includes a liquid crystal panel driving circuit, which includes a gate driver, a source driver, a plurality of gate lines, and a plurality of data lines. The gate lines and the data lines define a plurality of pixel units, each of which includes a thin-film transistor, a common electrode, and a pixel electrode. The source driver applies a driving voltage of 0-6V via the thin-film transistor to the pixel electrode. The present invention improves elastic energy between the liquid crystal molecules and thus avoids image sticking caused by long term displaying of the same image at the same location.Type: GrantFiled: November 30, 2012Date of Patent: October 21, 2014Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.Inventors: Xinhui Zhong, Xing Feng
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Patent number: 8836909Abstract: A liquid crystal display device which can exhibit a blue phase stably is manufactured. A first substrate and a second substrate are attached by a sealant interposing a liquid crystal layer comprising a liquid crystal composition therebetween, an alignment state of the liquid crystal layer is set to be an isotropic phase by heat treatment, the liquid crystal layer is irradiated with light so as to perform polymer stabilization treatment on the liquid crystal layer, and an alignment state of the liquid crystal layer is changed from an isotropic phase to a blue phase in the light irradiation. Thus, a liquid crystal display device which suppresses a defect which shows an alignment state other than a blue phase (an alignment defect) is manufactured.Type: GrantFiled: November 23, 2011Date of Patent: September 16, 2014Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Daisuke Kubota, Akio Yamashita, Masaru Nakano
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Patent number: 8830423Abstract: A method of making a liquid crystal device is provided, the method comprising (i) providing a cell containing a mixture of a liquid crystal and pre-polymer (ii) applying a stimulus to arrange the liquid crystal in a first predetermined state and (iii) subsequent to, or contemporaneously with, step (ii), causing the pre-polymer to form polymer when the liquid crystal is in a second predetermined state, wherein steps (ii) and (iii) are performed a plurality of times.Type: GrantFiled: November 27, 2008Date of Patent: September 9, 2014Assignee: Merck Patent GmbHInventors: Bo-Ru Yang, Steve Elston, Peter Raynes, Han-Ping Shieh
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Patent number: 8823891Abstract: A liquid crystal display device includes: first and second substrates facing and spaced apart from each other; a gate line and a data line on the first substrate, the gate line and the data line crossing each other to define a pixel region; a thin film transistor and a pixel electrode in the pixel region on the first substrate, the thin film transistor connected to the gate line and the data line, the pixel electrode connected to the thin film transistor; a common electrode on the second substrate, the common electrode facing the pixel electrode; at least one first reset electrode and at least one second reset electrode on one of the first and second substrates, the at least one first reset electrode and the at least one second reset electrode spaced apart from each other; and a bi-stable chiral splay nematic liquid crystal layer between the first and second substrates, the bi-stable chiral splay nematic liquid crystal layer having bi-stable states of a splay state as an initial state and a ?-twist state, wheType: GrantFiled: May 3, 2011Date of Patent: September 2, 2014Assignee: LG Display Co., Ltd.Inventors: Dong-Guk Kim, Wook-Sung Kim
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Publication number: 20140232974Abstract: A security device includes a liquid crystal layer having one of a cholesteric phase, a nematic phase, and a cholesteric phase and having molecules therein aligned volumetrically in a predetermined manner to form a predetermined diffractive optical pattern or image. The molecules of the liquid crystal layer are volumetrically aligned in the predetermined manner through at least a portion of the thickness of the liquid crystal layer.Type: ApplicationFiled: February 15, 2013Publication date: August 21, 2014Applicant: OPSEC SECURITY GROUP, INC.Inventor: DONALD WILLIAM TOMKINS
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Patent number: 8810741Abstract: An aligning and assembling method of a stereoscopic display device is provided and includes providing a liquid crystal (LC) panel and a brightness detector. A lenticular panel is placed between the LC panel and the brightness detector. The LC panel is driven to output a light-dispersion pattern. The lenticular panel is rotated and the brightness detector obtains a plurality of brightness patterns and a plurality of light-dispersion periods generated from the light-dispersion pattern after the light-dispersion pattern has passed through the lenticular panel. The brightness patterns correspond respectively to the light-dispersion periods. A maximum light-dispersion period is found from the light-dispersion periods. The lenticular panel is stopped to rotate when the maximum light-dispersion period is found.Type: GrantFiled: April 2, 2012Date of Patent: August 19, 2014Assignee: Chunghwa Picture Tubes, Ltd.Inventors: Jian-Da Liao, Chun-Ming Huang, Huan-Ting Lee
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Patent number: 8808477Abstract: The invention provides a display unit which can realize reduction in thickness and weight of the display unit by omitting a void between a touch panel and a display panel, and its manufacturing method. Whole faces of the touch panel and the display panel are directly bonded together with an adhesive layer in between. The display panel has a structure wherein a driving substrate in which organic light emitting devices are formed and a sealing substrate are bonded together with an adhesive layer in between. The touch panel has a structure wherein a lower plastic film in which a transparent electrode is formed and a touch-side plastic film in which a transparent electrode is formed are layered so that the transparent electrodes are placed opposite. The display panel is constructed with only the driving substrate, and the organic light emitting devices are sealed by the touch panel instead of the sealing substrate. Therefore, thickness and weight of the display unit can be further reduced.Type: GrantFiled: March 21, 2007Date of Patent: August 19, 2014Assignee: Sony CorporationInventor: Yuichi Iwase
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Patent number: 8760607Abstract: A liquid crystal display (“LCD”) panel includes a display substrate, an opposite substrate and a liquid crystal layer. The display substrate includes a pixel electrode and a first cured layer. The first cured layer has various pretilt angles. The opposite substrate includes a common electrode and a second cured layer. The second cured layer has various pretilt angles. The liquid crystal layer includes a plurality of liquid crystal molecules pretilted at the various pretilt angles by the first and second cured layers.Type: GrantFiled: April 6, 2009Date of Patent: June 24, 2014Assignee: Samsung Display Co., Ltd.Inventors: Myeong-Ha Kye, Jae-Jin Lyu, Ji-Won Sohn
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Patent number: 8734918Abstract: A liquid crystalline coating solution which comprises: an azo compound represented by the following general formula (1); and a solvent to dissolve the azo compound: wherein Q1 is an aryl group which may have any substituent group; Q2 is an arylene group which may have any substituent group; R is a hydrogen atom, an alkyl group having 1 to 3 carbon atoms, an acetyl group, a benzoyl group, or a phenyl group (these groups may have any substituent groups); and M is a counter ion.Type: GrantFiled: October 30, 2008Date of Patent: May 27, 2014Assignee: Nitto Denko CorporationInventors: Shoichi Matsuda, Kyoko Nishiguchi, Tadayuki Kameyama
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Publication number: 20140139800Abstract: The present invention provides a method for termination detection of optical alignment of liquid crystal material, which includes: under influence of electrical field, irradiating light on liquid crystal material so that reactive monomers in liquid crystal material polymerizing; detecting a residual amount or a thickness change value of the reactive monomers in liquid crystal material to determine detected residual amount of reactive monomers or thickness change value in liquid crystal box reaching a default value; when reaching default value, terminating optical alignment of liquid crystal material. The present invention also provides a device for termination detection of optical alignment of liquid crystal material. Through detecting termination of optical alignment, the present invention realizes automatic control of irradiation time in optical alignment to reduce the effect of individual glass substrate variation on optical alignment to avoid affecting reaction process of alignment on reactive monomer.Type: ApplicationFiled: November 27, 2012Publication date: May 22, 2014Applicant: Shenzhen China Star Optoelectronics Technology Co., Ltd.Inventor: Liang Xu
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Patent number: 8704978Abstract: A LCD panel includes a gate driver, an active-matrix array and a switching circuit. The gate driver is disposed on a thin film transistor substrate, and includes a shift register, wherein the shift register has plural output terminals for successively outputting plural gate driving signals. The active-matrix array is disposed on the thin film transistor substrate, and includes plural gate lines, wherein the gate lines are connected with the output terminals of the shift register. The switching circuit is disposed on the thin film transistor substrate, and includes plural switching units, wherein each of the switching units has a first terminal electrically connected with one of the output terminals of the shift register, a control terminal electrically connected with a first input pad, and a second terminal electrically connected with a second input pad.Type: GrantFiled: August 26, 2011Date of Patent: April 22, 2014Assignee: Au Optronics Corp.Inventors: Jing-Ru Chen, Wei-Hsien Wu, Cheng-Hung Chen
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Patent number: 8704981Abstract: Provided is a method of producing a light-reflective film that can prevent the blocking of a liquid crystal layer and a support without lowering transparency of the film. The method includes a step of coating a curable liquid crystal composition that contains a curable cholesteric liquid crystal compound onto one surface of a support of which a surface roughness Ra of the other surface thereof is 4.5 nm to 25 nm; a step of aligning the curable cholesteric liquid crystal compound to make a state of a cholesteric liquid crystal phase aligned by heating the coated curable liquid crystal composition; a step of irradiating in which a light-reflecting layer where the cholesteric liquid crystal phase has been fixed is formed by advancing a curing reaction of the curable liquid crystal composition; and a step of charging the support and the light-reflecting layer with the same polarity.Type: GrantFiled: March 23, 2012Date of Patent: April 22, 2014Assignee: Fujifilm CorporationInventors: Takao Taguchi, Kazuhiro Oki
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Patent number: 8704977Abstract: The invention provides a liquid crystal cell and method thereof. The cell comprises two opposed substrates and a surfactant-free lyotropic chromonic liquid crystals (LCLC) material disposed therebetween. By using an ammonium compound with LCLC or surface treatment on the substrates, the alignment of the LCLC material can be manipulated as a homeotropic bulk alignment; or a hybrid bulk alignment in which the LCLC alignment is changed from homeotropic bulk alignment in the vicinity of one substrate to planar alignment in the vicinity of another substrate. The cell can be used in biosensing, detection and amplification of ligands, optical devices, and photovoltaics etc.Type: GrantFiled: March 5, 2008Date of Patent: April 22, 2014Assignee: Kent State UniversityInventors: Oleg D. Lavrentovich, Yuriy A. Nastyshyn, Vassili G. Nazarenko, Roman M. Vasyuta, Oleksandr P. Boiko, Ye Yin, Sergij V. Shiyanovskii
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Patent number: 8685502Abstract: A liquid crystal display including a first substrate; a second substrate facing the first substrate; a first field generating electrode disposed on the first substrate; a second field generating electrode disposed on the second substrate; and a liquid crystal layer disposed between the first substrate and the second substrate, the liquid crystal layer including a liquid crystal and an alignment assistant, wherein the alignment assistant includes a mesogen and two or more photo-polymerizable groups.Type: GrantFiled: April 1, 2009Date of Patent: April 1, 2014Assignee: Samsung Display Co., Ltd.Inventors: Jun-Hyup Lee, Jae-Jin Lyu
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Patent number: 8687132Abstract: A method of manufacturing a display device according to one aspect of the present invention is a method of manufacturing a display device including a liquid crystal interposed between a CF substrate and a TFT substrate that are opposed to each other, the method including the steps of: bonding the CF substrate and the TFT substrate each having a mother substrate shape to form a cell substrate from which at least one panel is to be cut out; forming, after formation of the cell substrate, a parallax barrier layer for separating a display image on an outer side of the cell substrate at a side of one of the CF substrate and the TFT substrate; and dividing, after formation of the parallax barrier layer, the cell substrate into at least one panel.Type: GrantFiled: December 15, 2010Date of Patent: April 1, 2014Assignee: Mitsubishi Electric CorporationInventor: Akio Nakayama
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Publication number: 20140071393Abstract: Embodiments of the present invention provide a liquid crystal lens, a manufacturing method thereof, a manufacturing apparatus and a 3D display device. The manufacturing method of a liquid crystal lens, comprising: obtaining an actual effective refractive index profile of a liquid crystal layer by simulating, and the liquid crystal layer having an initial pretilt angle; determining a difference region in which a difference exists between a predefined standard pretilt angle and the initial pretilt angle of liquid crystal in the liquid crystal layer and a non-difference region, according to standard and actual effective refractive index profiles; simulating an orientation of the liquid crystal in the difference region of the liquid crystal lens, and determining the standard pretilt angle of the liquid crystal in the difference region; and irradiating the liquid crystal in the liquid crystal lens for alignment.Type: ApplicationFiled: August 28, 2013Publication date: March 13, 2014Applicant: BOE TECHNOLOGY GROUP CO., LTD.Inventor: Juan Chen
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Patent number: 8665414Abstract: Thermochromic liquid crystal filters are fabricated by providing two polarizers oriented at offset polarity with respect to each other; providing alignment structures adjacent the inner surfaces of the polarizers; placing a plurality of spacers between the polarizers; and filling a space created by the spacers with a thermotropic liquid crystal that acts as a depolarizer in a nematic state. The filter acts as a wave block when the liquid crystal is in an isotropic state. Alternatively, the filters can be created by encapsulating a thermochromic liquid crystal with a polymer material to form a flexible film and orienting the thermochromic liquid crystal in the polymer material to create a structure that functions as a thermochromic optical filter. Such filters can control the flow of light and radiant heat through selective reflection, transmission, absorption, and/or re-emission. The filters have particular application in passive or active light-regulating and temperature-regulating films and materials.Type: GrantFiled: August 20, 2009Date of Patent: March 4, 2014Assignee: RavenBrick LLCInventors: Richard M. Powers, Wil McCarthy, Matthew Bryant Kish
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Publication number: 20130333612Abstract: Embodiments described herein relate to compositions, devices, and methods for the alignment of certain materials including liquid crystals. In some cases, a photoresponsive material include a moiety capable of undergoing a di-pi-methane rearrangement. Methods described herein may provide chemically and/or thermally stable alignment materials for use in a various technologies, including transistors, luminescent devices, and liquid crystal devices.Type: ApplicationFiled: March 6, 2013Publication date: December 19, 2013Applicant: Massachusetts Institute of TechnologyInventor: Massachusetts Institute of Technology
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Patent number: 8610872Abstract: A liquid crystal alignment process comprises steps of: providing a first substrate and a second substrate to form a liquid crystal accommodating space therebetween; pouring a liquid crystal composition into the liquid crystal accommodating space, the liquid crystal composition comprising liquid crystal molecules, a first monomer material, and a second monomer material; applying a voltage difference to the first and second substrates for arranging the liquid crystal molecules at a pre-tilt angle; and exposing the liquid crystal composition by mixed multi-spectrum rays for polymerizing the first monomer material and the second monomer material to form at least one type of liquid crystal alignment polymer on opposite surfaces of the first and second substrates. The liquid crystal alignment process is capable of improving the efficiency of exposure procedure, reducing time to manufacture products, and is capable of solving the problems of high costs and waste pollution.Type: GrantFiled: January 21, 2011Date of Patent: December 17, 2013Assignee: Chunghwa Picture Tubes, Ltd.Inventors: Chun-wei Su, Jan-tien Lien
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Patent number: 8593583Abstract: The present invention relates to a liquid crystal display including: a first substrate, a gate line formed disposed on the first substrate, a first data line and a second data lines formed both of which are disposed on the first substrate, and insulated from and intersection disposed substantially perpendicular to the gate line, a first thin film transistor connected to the gate line and the first data line, a second thin film transistor connected to the gate line and the second data line, a first pixel electrode connected to the first thin film transistor, a second pixel electrode connected to the second thin film transistor, a second substrate facing disposed substantially opposite to the first substrate, a common electrode formed disposed on the second substrate, and a liquid crystal layer disposed between the first substrate and the second substrate, and including biaxial liquid crystal.Type: GrantFiled: March 24, 2009Date of Patent: November 26, 2013Assignee: Samsung Display Co., Ltd.Inventors: Seung-Hoon Lee, Joo-Seok Yeom, Hee-Seop Kim, Sung-Woon Kim, Jiangang Lu
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Publication number: 20130293819Abstract: The present invention provides a liquid crystal display device, which includes: a plurality of pixel units. Each of the pixel units further includes: a liquid crystal layer; a pixel electrode and corresponding electrode, disposed on two opposite sides of liquid crystal layer; the corresponding electrode further including: first electrode pattern, disposed oppositely to pixel electrode; second electrode pattern, connected to the first electrode pattern, for applying an external voltage to the first electrode pattern so as to form an alignment electric field for liquid crystal layer between the first electrode pattern and pixel electrode. The present invention changes the way external voltage is applied, and introduce external voltage from one side of color filter substrate to improve success rate of liquid crystal alignment, reduce energy-consumption and reduce waste.Type: ApplicationFiled: May 17, 2012Publication date: November 7, 2013Applicant: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO. ,LTD.Inventors: Bing-jei Liao, Chialiang Lin
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Publication number: 20130286343Abstract: The present invention provides a method and device of liquid crystal photo-alignment. The method comprises: providing a liquid crystal layer, liquid crystal layer doped with reactive monomer; under influence of an electric field, using radiation light to irradiate on liquid crystal layer to trigger polymerization of monomers to achieve the photo-alignment of liquid crystal layer; wherein polymerization of monomers comprising a first stage and a second stage following the first stage, the radiation light having a first illumination in the first stage and having a second illumination in the second stage, and the first illumination being less than the second illumination.Type: ApplicationFiled: May 17, 2012Publication date: October 31, 2013Applicant: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO. ,LTD.Inventor: Liang Xu
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Publication number: 20130258261Abstract: The present invention provides a method for attaching a protection film of a liquid crystal display module, including the following steps: (1) providing a liquid crystal display module protection film and a liquid crystal display module, wherein the liquid crystal display module protection film includes a protection film body and adhesive layers formed at edges of the protection film body and the liquid crystal display module includes a backlight module, a liquid crystal display panel disposed on the backlight module, and a front bezel disposed on the liquid crystal display panel; (2) aligning the liquid crystal display module protection film with respect to the front bezel of the liquid crystal display module; and (3) attaching the adhesive layers of the liquid crystal display module protection film to the front bezel of the liquid crystal display module so as to cover the liquid crystal display panel.Type: ApplicationFiled: April 11, 2012Publication date: October 3, 2013Applicant: Shenzhen China Star Optoelectronics Technology Co. Ltd.Inventor: Lan Wang
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Publication number: 20130188106Abstract: The liquid crystal display device includes a transparent electrode formed in a plan form and a strip or strips transparent electrode disposed thereon via an insulating film, and controls display by rotating the liquid crystal aligned substantially in parallel to a substrate within a plane that is substantially in parallel to the substrate by an electric field between the both electrodes. Each pixel constituting the display is divided into two regions, the extending directions of the strip electrode in each of the regions are orthogonal, the alignment azimuths of the liquid crystal of each of the regions are orthogonal, and the angles formed between the extending directions of the strip electrode and the alignment azimuth of the liquid crystal are the same.Type: ApplicationFiled: November 29, 2012Publication date: July 25, 2013Applicant: NLT TECHNOLOGIES, LTD.Inventor: NLT TECHNOLOGIES, LTD.
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Patent number: 8488072Abstract: To provide a structure and a manufacturing method which can manufacture, at a low cost and with good yield, a liquid crystal display panel having a lenticular lens and a substrate formed in a unified manner. When forming a lenticular lens onto a mother CF substrate by using a wet etching method, substrates are dipped into an etching solution while being raised up in such a manner that the length direction of slit openings of a mask is aligned with a vertical direction and an area having no mask pattern comes on a bottom side. With this, the residuals generated due to glass impurities can be drained towards the lower side along the lenticular lens shape to be discharged to the flat area, which makes it possible to suppress deterioration in the etching processed shape.Type: GrantFiled: April 3, 2009Date of Patent: July 16, 2013Assignee: NLT Technologies, Ltd.Inventors: Hiroshi Okumura, Setsuo Kaneko
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Patent number: 8488097Abstract: One aspect of the invention provides a liquid crystal display device producing method for irradiating a liquid crystal display substrate, in which plural pixels are formed in a matrix state and liquid crystal is sealed between a TFT substrate and a counter electrode substrate, with light having a predetermined wavelength to orient liquid crystal molecules toward a predetermined direction in a state in which an electric field is applied to each pixel of the liquid crystal display substrate. The method includes the steps of: dipping the liquid crystal display substrate and a lamp in a transparent liquid having resistivity of a predetermined value or more and sufficiently high transmittance to the light in a state in which the liquid crystal display substrate and the lamp face each other; and lighting the lamp to irradiate the liquid crystal display substrate with the light having a predetermined light quantity in a state in which the electric field is applied to each pixel.Type: GrantFiled: October 7, 2010Date of Patent: July 16, 2013Assignee: V Technology Co., Ltd.Inventors: Koichi Kajiyama, Michinobu Mizumura, Kazushige Hashimoto
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Publication number: 20130176525Abstract: An aligning and assembling method of a stereoscopic display device is provided and includes providing a liquid crystal (LC) panel and a brightness detector. A lenticular panel is placed between the LC panel and the brightness detector. The LC panel is driven to output a light-dispersion pattern. The lenticular panel is rotated and the brightness detector obtains a plurality of brightness patterns and a plurality of light-dispersion periods generated from the light-dispersion pattern after the light-dispersion pattern has passed through the lenticular panel. The brightness patterns correspond respectively to the light-dispersion periods. A maximum light-dispersion period is found from the light-dispersion periods. The lenticular panel is stopped to rotate when the maximum light-dispersion period is found.Type: ApplicationFiled: April 2, 2012Publication date: July 11, 2013Applicant: Chunghwa Picture Tubes, Ltd.Inventors: Jian-Da Liao, Chun-Ming Huang, Huan-Ting Lee
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Patent number: 8482704Abstract: Provided are an LCD device that can control a viewing angle freely and a manufacturing method thereof. The LCD device includes a first substrate, a second substrate, and an LC layer interposed between the first and second substrates. The LCD device further includes red, green, blue, and viewing angle controlling subpixels. These subpixels are driven in a VA mode. The red, green, and blue subpixels have a transflective structure. The viewing angle controlling subpixel has a transmissive or transflective structure.Type: GrantFiled: April 13, 2011Date of Patent: July 9, 2013Assignee: LG Display Co., Ltd.Inventors: Hyun Suk Jin, Hyung Seok Jang, Tae Han Kim
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Patent number: 8456607Abstract: It is an object of the present invention to suppress light leakage in a dark state which is generated by rubbing treatment. A liquid crystal material containing an ultraviolet curable liquid crystalline monomer at a concentration of more than 0 wt % and not more than 1.0 wt % is used for a liquid crystal layer, and the liquid crystal layer is irradiated with ultraviolet rays. By applying such a liquid crystal layer to a liquid crystal display device, light leakage in a dark state can be suppressed, and the black display can be improved. Therefore, a liquid crystal display device with an excellent contrast and high display quality can be obtained.Type: GrantFiled: February 3, 2010Date of Patent: June 4, 2013Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Daisuke Kubota, Takeshi Nishi, Tetsuji Ishitani
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Publication number: 20130120705Abstract: The present invention discloses a method for manufacturing alignment films for a liquid crystal display panel, characterized in that the method includes steps of: dripping liquid crystal mixture, which comprises liquid crystal molecules and liquid crystal alignment monomers, on a first substrate; gluing the first substrate and a second substrate together, irradiating the first substrate and the second substrate by a first UV ray and providing an electric field between the first substrate and the second substrate at the same time; and irradiating the first substrate and the second substrate by a second UV ray, and curing the first substrate and the second substrate at the same time to form the alignment films.Type: ApplicationFiled: November 18, 2011Publication date: May 16, 2013Applicant: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO LTD.Inventors: Guo Zhao, Chien-pang Lee
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Patent number: 8416370Abstract: A liquid crystal display device includes a polarizer plate attached to at least one of outer surfaces opposed to the inner surfaces of a counter substrate and an array substrate between which a liquid crystal layer is interposed. Active areas are formed on the respective array and counter substrates to form a pixel matrix. A shield element surrounds the active area on the counter substrate and extends to a corner portion of the counter substrate where a polarizer plate fiducial mark is formed to check alignment error of the polarizer plate attached to each of the respective outer surfaces of the array substrate and the counter substrate, the fiducial mark formed by patterning of the material of the shield layer to produce a pattern defined by retained portions of the material of the shield layer and aperture portions where the material of the shield layer has been removed.Type: GrantFiled: November 27, 2009Date of Patent: April 9, 2013Assignee: Japan Display Central Inc.Inventor: Akira Yokogawa
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Publication number: 20130077039Abstract: An apparatus and a method for producing a pre-tilt angle in a liquid crystal panel are disclosed. The apparatus includes a sample stage for placing the liquid crystal panel, at least one ultraviolet (UV) light source for irradiating the liquid crystal panel so that a filler material in a liquid crystal layer rotated to a preset angle can be cured to form a pre-tilt angle, and A UV filtering sheet transmissive to UV rays with wavelengths of 320 nm to 380 nm disposed between the sample stage and the UV light source. By disposing the UV filtering sheet, the filler material in the liquid crystal layer can be quickly cured and a desirable pre-tilt angle can be formed. This shortens the time of UV irradiation, improves the efficiency of producing a pre-tilt angle in the liquid crystal panel and lowers the manufacturing cost of the liquid crystal panel.Type: ApplicationFiled: September 23, 2011Publication date: March 28, 2013Applicant: Shenzhen China Star Optoelectronics Technology Co., LTD.Inventors: Kuan-cheng Lee, Chunliang Lee
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Patent number: 8405799Abstract: An object of the present invention is to obtain a polymer-stabilized liquid crystal composition which can suppress dependency of a driving voltage on a temperature by decreasing the driving voltage. To a low-molecular liquid crystal compound, a chiral compound, and a specific acrylate and a polymerizable liquid crystal compound as polymerizable acrylate compounds are added, to prepare a polymer-stabilized liquid crystal composition. By subjecting the polymer-stabilized liquid crystal composition to ultraviolet exposure while maintaining a desired alignment state to form a polymer chain in a liquid crystal phase, a polymer-stabilized liquid crystal display device containing a low-molecular liquid crystal in a stabilized alignment state is obtained.Type: GrantFiled: March 25, 2008Date of Patent: March 26, 2013Assignee: DIC CorporationInventors: Toru Fujisawa, Kiyofumi Takeuchi, Kazuaki Hatsusaka, Isa Nishiyama, Shunsuke Kobayashi
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Patent number: 8373810Abstract: A micro-array of optical vortex retarders is provided by forming an alignment layer having a plurality of discrete alignment patches with different orientations. A layer of birefringent material, including one of a liquid crystal and a liquid crystal polymer precursor material, is provided adjacent to the alignment layer. The aligning orientation and position of each discrete alignment patch in the plurality of discrete alignment patches is selected to induce the layer of birefringent material to form at least one optical vortex retarder adjacent to a substantially non-oriented region of the alignment layer.Type: GrantFiled: September 10, 2009Date of Patent: February 12, 2013Assignee: JDS Uniphase CorporationInventors: David M. Shemo, Scott McEldowney
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Patent number: RE44889Abstract: In a liquid crystal device a substrate (1) favors at least two stable or metastable differently directed liquid crystal alignments, and switching means for causing the liquid crystal material to switch between the alignments includes means arranged for optically irradiating said device. The latter may provide linearly polarized light (3) for inducing a torque on the liquid crystal to determine the alignment direction, and may optionally cooperate with a second energy supplying means such as an electric field (V) for assisting and switching. Alternatively, the alignment of the liquid crystal may be switched by a second energy supplying means such as an electric field, the light serving to produce heat to aid the switching. Either or both energy sources may be applied locally for switching of selected areas or pixels. Energy levels at the bistable substrate may be adjusted by the use of an oligomeric additive (slippery surface).Type: GrantFiled: February 28, 2008Date of Patent: May 13, 2014Assignee: F. Poszat Hu, LLCInventors: Richard Jonathan Miller, John Clifford Jones