With Particular Non-zero Angle Between Polarization Axis And Orientation Direction Patents (Class 349/99)
  • Patent number: 10509284
    Abstract: A liquid crystal display device according to an aspect of the disclosure includes a liquid crystal panel including an element substrate, a counter substrate facing the element substrate, a liquid crystal layer sandwiched between the element substrate and the counter substrate, an incident-side linear polarizing plate arranged on a light-incident side of the liquid crystal layer, and an emission-side linear polarizing plate arranged on a light-emission side of the liquid crystal layer. Each of the element substrate and the counter substrate uses a resin film as base material. A plurality of insulating films are formed on the base material. A contact hole is formed in the plurality of insulating films, the contact hole being rectangular in plan view. Either a long side or a short side of the contact hole is parallel with an absorption axis of the incident-side linear polarizing plate or the emission-side linear polarizing plate.
    Type: Grant
    Filed: March 27, 2017
    Date of Patent: December 17, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Mayuko Sakamoto, Tetsunori Tanaka, Yuki Yasuda
  • Patent number: 10082619
    Abstract: According to an aspect, a display device includes: a display unit; a light source device that irradiates the display unit with light, and that includes a plurality of luminous bodies; at least one power reception unit that receives power for the light source device; and at least one power transmission unit that wirelessly transmits power to the power reception unit.
    Type: Grant
    Filed: February 14, 2017
    Date of Patent: September 25, 2018
    Assignee: Japan Display Inc.
    Inventor: Shinji Koura
  • Patent number: 9829617
    Abstract: The present disclosure relates to a retarder plate with adjustable dispersion of retardation. The retarder can form a quarter-wave plate that exhibits a reverse or flat dispersion of retardation.
    Type: Grant
    Filed: January 6, 2015
    Date of Patent: November 28, 2017
    Assignee: LIGHT POLYMERS HOLDING
    Inventors: Evgeny Morozov, Valeriy Kuzmin, Sergey Fedotov
  • Patent number: 9280021
    Abstract: Each of branch portions 62ae of a pixel electrode 62a and inclined portions S1k of data lines S1 extends in a direction different from an x direction and a y direction in a pixel region PA and inclined with respect to the y direction. Further, a liquid crystal layer 203 is orientated in a direction different from the x direction and the y direction in the pixel region PA and inclined with respect to the y direction.
    Type: Grant
    Filed: March 27, 2009
    Date of Patent: March 8, 2016
    Assignee: JAPAN DISPLAY INC.
    Inventors: Kenji Ogura, Hironao Tanaka, Hidemasa Yamaguchi
  • Patent number: 9069209
    Abstract: A liquid crystal display which is a reflective liquid crystal display includes: a front substrate; a rear substrate; and a liquid crystal material layer disposed between the front substrate and the rear substrate, wherein an optical design is performed such that an extreme value of a liquid crystal applied voltage-reflectance curve in a state of being observed from a normal observing direction is shifted further to a lower voltage side than an extreme value of a liquid crystal applied voltage-reflectance curve in a state of being observed from a direction deviated from the normal observing direction, and wherein an anisotropic scatterer disposed such that a direction where scattering characteristics are the maximum is aligned with the normal observing direction is provided on the front substrate side.
    Type: Grant
    Filed: January 16, 2013
    Date of Patent: June 30, 2015
    Assignee: JAPAN DISPLAY INC.
    Inventor: Masaya Tamaki
  • Patent number: 9013657
    Abstract: A liquid crystal device includes a liquid crystal panel including a pair of substrates that sandwiches a liquid crystal layer containing liquid crystal molecules exhibiting a parallel alignment in an initial alignment state, and a polarizing plate disposed on either side of the liquid crystal panel. The liquid crystal molecules are inclined at a pretilt angle and aligned in a predetermined direction in planes of the substrates. The liquid crystal panel emits light entering through one of the polarizing plates toward the other. The liquid crystal panel emits light having the maximum intensity in a direction different from a direction normal to the substrates. The azimuth of the maximum-light-intensity direction projected onto the planes of the substrates is substantially parallel to the predetermined direction.
    Type: Grant
    Filed: May 23, 2014
    Date of Patent: April 21, 2015
    Assignee: Seiko Epson Corporation
    Inventor: Osamu Okumura
  • Publication number: 20150055063
    Abstract: A display apparatus includes a first substrate, a second substrate and a liquid crystal layer. The first substrate has a curved first side. The Range of curvature radius of the first side is between 500 mm and 10000 mm. On the first substrate is defined at least a datum line. The included angle of the datum line and the first side is between 80 degrees and 100 degrees. The second substrate is disposed opposite to the first substrate. The liquid crystal layer has a plurality of liquid crystal molecules. Wherein, the liquid crystal molecules at the datum line corresponding in a pixel area have a first tilt direction and a second tilt direction respectively, and the first tilt direction and the second tilt direction are different.
    Type: Application
    Filed: August 20, 2014
    Publication date: February 26, 2015
    Inventor: Chih-Yung HSIEH
  • Publication number: 20150036086
    Abstract: A liquid crystal display device includes: a first polarizer; a liquid crystal cell including a liquid crystal layer containing liquid crystal molecules aligned in parallel with a substrate of the liquid crystal cell; a first compensation film; and a second polarizer, wherein, as viewed perpendicularly to the substrate, an absorption axis of the first polarizer is parallel with an optical axis of the first compensation film, and an angle ? between the absorption axis of the first polarizer and an optical axis of the liquid crystal layer satisfies 0°<?, in a cross section of the liquid crystal cell as viewed along a transmission axis of the first polarizer, an optical axis of the liquid crystal layer and the optical axis of the first compensation film have a tilt angle in the same direction to a face of the substrate, and the first compensation film has a positive birefringence.
    Type: Application
    Filed: July 28, 2014
    Publication date: February 5, 2015
    Applicant: FUJIFILM Corporation
    Inventor: Tatsuya IWASAKI
  • Publication number: 20150036085
    Abstract: Disclosed herein is a display device switchable between a mirror mode and a display mode. The display device includes a display panel, a polarizing element and a reflective polarizer. The display panel has a light-emitting surface for emitting a polarized light. The polarizing element has an absorption axis, and is disposed on a side adjacent to the light-emitting surface. The polarizing element is switchable between a polarizing mode and a non-polarizing mode. When the polarizing element is operated in the polarizing mode, the polarizing element absorbs a polarized light in the polarization direction parallel with the absorption axis. When the polarizing element is operated in the non-polarizing mode, the polarizing element allows the polarized light emitted from the display panel to pass there through. The reflective polarizer is disposed between the display panel and the polarizing element.
    Type: Application
    Filed: May 23, 2014
    Publication date: February 5, 2015
    Applicant: AU OPTRONICS CORP.
    Inventors: Kuei-Bai CHEN, Chia-Hao LI, Chen-Hsien LIAO, Chih-Ling HSUEH
  • Publication number: 20140347609
    Abstract: A display apparatus is provided. The display apparatus comprises a liquid crystal display device, a first polarizer and a diffractive optical element. The first polarizer is disposed on a light emitting side of the liquid crystal display device. An azimuth angle of a polarizing direction of the first polarizer is 90 degrees. The diffractive optical element is disposed on the light emitting side of the liquid crystal display device and comprises at least a first diffraction grating. An azimuth angle of a grating direction of the first diffraction grating is 10±30 degrees or 85±25 degrees.
    Type: Application
    Filed: August 6, 2014
    Publication date: November 27, 2014
    Inventors: Wang-Yang Li, Ting-I Wu
  • Patent number: 8865275
    Abstract: A light absorption anisotropic film, wherein content of a liquid crystalline non-colorable low molecular weight compound is 30% by mass or less; and which is obtained by fixing the alignment of a dichroic dye composition comprising at least one type of azo-based dichroic dye having nematic liquid crystallinity; and shows a diffraction peak derived from a periodic structure in a direction parallel to the alignment axis on measurement of X-ray diffraction. The light absorption anisotropic film is high in dichroism.
    Type: Grant
    Filed: March 28, 2011
    Date of Patent: October 21, 2014
    Assignee: Fujifilm Corporation
    Inventors: Shinichi Morishima, Nobutaka Iwahashi
  • Patent number: 8817199
    Abstract: A 3D display apparatus includes a display device, a liquid crystal panel, and a lens unit. The display device is configured to output polarized lights of one or more images with a first polarization direction. The liquid crystal panel is coupled to the display device and contains a plurality of pixel display areas to receive the polarized lights. The display areas can be individually controlled by corresponding active switches to a first state in which the first polarization direction is transformed into a second polarization direction or a second state in which the first polarization direction is maintained. Further, the lens unit is coupled to the liquid crystal panel and is configured to guide the polarized lights with the second polarization direction to pass through for 2D display and to guide polarized lights with the first polarization direction into predetermined transmitting directions for 3D display.
    Type: Grant
    Filed: August 29, 2012
    Date of Patent: August 26, 2014
    Assignee: Superd Co. Ltd.
    Inventors: Fuzhong Guo, Zhang Ge, Lei Song
  • Publication number: 20140218667
    Abstract: Provided is a liquid crystal display device provided with light fastness, stabilized alignment of liquid crystal, and excellent display quality by a polymer layer disposed on a photo-alignment film. The liquid crystal display device of the present invention is a liquid crystal display device in which at least one of a pair of substrates includes a polymer layer, a photo-alignment film, and an electrode in the stated order from a liquid crystal layer side; the photo-alignment film aligns liquid crystal molecules horizontally; a polarization transmission axis direction of a polarizing element in observation surface side of a liquid crystal cell is along an alignment direction of liquid crystal molecules at a voltage lower than the threshold voltage; and a material constituting the photo-alignment film contains a material for aligning liquid crystal molecules in a direction crossing a polarization direction of polarized light by polarized light irradiated to the photo-alignment film.
    Type: Application
    Filed: August 7, 2012
    Publication date: August 7, 2014
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Koichi Miyachi, Isamu Miyake
  • Publication number: 20140218649
    Abstract: Provided are a liquid crystal lens, an optical filter, and a display device. The exemplary liquid crystal lens may exhibit optical anisotropy and optical isotropy according to a polarization state of incident light. When the liquid crystal lens is applied to a display device capable of generating a 2D image and a 3D image, the 3D image may be seen without glasses in the state of the optical anisotropy, and the 2D image can be seen in the state of the optical isotropy.
    Type: Application
    Filed: April 11, 2014
    Publication date: August 7, 2014
    Applicant: LG CHEM, LTD.
    Inventors: Byoung Kun Jeon, Su Young Ryu, Moon Soo Park
  • Publication number: 20140211132
    Abstract: Provided is a liquid crystal display device provided with light fastness, stabilized alignment of liquid crystal, and excellent display quality. The liquid crystal display device of the present invention is a liquid crystal display device in which at least one of a pair of substrates includes a photo-alignment film, and an electrode in the stated order from the liquid crystal layer side; the photo-alignment film aligns liquid crystal molecules horizontally to the photo-alignment film surface; a polarization transmission axis direction of a polarizing element in the observation surface side of the liquid crystal cell crosses an alignment direction of liquid crystal molecules at a voltage lower than the threshold voltage in the liquid crystal layer; and a material constituting the photo-alignment film contains a material for aligning liquid crystal molecules in a direction crossing a polarization direction of polarized light by polarized light irradiated to the photo-alignment film.
    Type: Application
    Filed: August 7, 2012
    Publication date: July 31, 2014
    Applicant: SHARP KABUSHIKI KAISHA
    Inventors: Koichi Miyachi, Isamu Miyake
  • Patent number: 8773481
    Abstract: A pixel structure disposed on a substrate including a scan line, a data line, an active element, a first electrode, and a second electrode is provided. The scan line and the data line are intersected to define a rectangular pixel area. The active element is electrically connected to the scan line and the data line. The first electrode has stripe patterns and connecting patterns located in the rectangular pixel area. Each connecting pattern is connected to the central parts or the parts near the central parts of two adjacent stripe patterns to demarcate or define two silts between the two adjacent stripe patterns. The extending direction of the slits is intersected to the rectangle length of the rectangular pixel area by an angle ? wherein 0°??<45°. The second electrode is located between the first electrode and the substrate and part of the second electrode is exposed by the slits.
    Type: Grant
    Filed: March 10, 2010
    Date of Patent: July 8, 2014
    Assignee: AU Optronics Corporation
    Inventors: Ying-Chi Lu, Chih-Yun Chai, Ming-Chun Li, Hong-Ji Huang, Seok-Lyul Lee
  • Patent number: 8773621
    Abstract: A liquid crystal device includes a liquid crystal panel including a pair of substrates that sandwiches a liquid crystal layer containing liquid crystal molecules exhibiting a parallel alignment in an initial alignment state, and a polarizing plate disposed on either side of the liquid crystal panel. The liquid crystal molecules are inclined at a pretilt angle and aligned in a predetermined direction in planes of the substrates. The liquid crystal panel emits light entering through one of the polarizing plates toward the other. The liquid crystal panel emits light having the maximum intensity in a direction different from a direction normal to the substrates. The azimuth of the maximum-light-intensity direction projected onto the planes of the substrates is substantially parallel to the predetermined direction.
    Type: Grant
    Filed: February 13, 2009
    Date of Patent: July 8, 2014
    Assignee: Seiko Epson Corporation
    Inventor: Osamu Okumura
  • Publication number: 20140176881
    Abstract: This liquid crystal display device (100) includes: a vertical alignment liquid crystal layer (3); a pixel electrode (11) and a counter electrode (21) arranged on first and second substrates (1, 2), respectively, to front on the liquid crystal layer; and first and second alignment films (12, 22). Each pixel region (10) includes first, second, third and fourth liquid crystal domains (A, B, C, D) in which liquid crystal molecules (3a) are tilted in first, second, third and fourth predetermined directions, respectively, which are defined so that an angle formed between any two of them is approximately equal to an integral multiple of 90 degrees. The first liquid crystal domain is located close to at least a part of edges of the pixel electrode, which includes a first edge portion (EG1) where an azimuthal direction (e1) perpendicular to the part and pointing toward the inside of the pixel electrode defines an angle greater than 90 degrees to the first direction.
    Type: Application
    Filed: August 9, 2012
    Publication date: June 26, 2014
    Applicant: SHARP KABUSHIKI KAISHA
    Inventor: Youhei Nakanishi
  • Patent number: 8698982
    Abstract: A liquid crystal device includes a first substrate and a second substrate that are arranged so as to face each other, a liquid crystal layer that is pinched between the first substrate and the second substrate, one pair of polarizers that are arranged on both outer sides of the first substrate and the second substrate, a first optical element having a polarization separation function that is disposed in at least one spot of the first substrate, and a display area that contributes to display. The first optical element is arranged outside the display area.
    Type: Grant
    Filed: August 24, 2009
    Date of Patent: April 15, 2014
    Assignee: Seiko Epson Corporation
    Inventors: Yutaka Tsuchiya, Takumi Seki
  • Publication number: 20140092348
    Abstract: Provided is a retardation film that can be incorporated into a liquid crystal display device having low power consumption. The retardation film includes a support (A) and a rodlike liquid crystalline compound layer (B), which satisfies a particular brightness when the retardation film is incorporated into a liquid crystal device.
    Type: Application
    Filed: September 18, 2013
    Publication date: April 3, 2014
    Applicant: FUJIFILM Corporation
    Inventors: Ayako MURAMATSU, Hiroshi SATO
  • Publication number: 20140055725
    Abstract: An optical compensation structure and a display device are disclosed. The former comprises a front side polarizer and a rear side polarizer arranged at both sides of a VA liquid crystal unit; the front side polarizer includes a front side polarization unit and a first front side TAC film; the absorption axis of the front side polarization unit is perpendicular to the horizontal normal of the VA liquid crystal unit; the rear side polarizer includes a rear side polarization unit and a biaxial film; and the absorption axis of the rear side polarization unit is parallel to the horizontal normal. The region having serious dark-state light leakage can be transferred from a horizontal viewing angle to a vertical viewing angle, which improves the display effect. Meanwhile, there is no addition of the number of layers of the biaxial film, which reduces the cost.
    Type: Application
    Filed: September 7, 2012
    Publication date: February 27, 2014
    Applicant: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventors: Chih-Tsung Kang, Bo Hai
  • Publication number: 20130229588
    Abstract: To acquire a fine viewing angle property from oblique view fields in a lateral electric field type liquid crystal display device having liquid crystal initial alignment directions in two orthogonal directions. The absorption axis of the incident-side polarization plate and the absorption axis of the exit-side polarization plate are orthogonal to each other in both of the region I and the region II, and the liquid crystal layer, the in-cell retarder as an optical compensation layer, the A-plate, and the C-plate sandwiched therebetween are in parallel to either one of the absorption axes or orthogonal to the substrates. Therefore, the transmittance can be suppressed to be low and a fine black display can be acquired even when the display surface is viewed from the oblique view fields.
    Type: Application
    Filed: March 1, 2013
    Publication date: September 5, 2013
    Applicant: NLT TECHNOLOGIES, LTD.
    Inventors: Shinichi NISHIDA, Hidenori IKENO, Hideki ITO, Mitsuhiro SUGIMOTO
  • Patent number: 8488070
    Abstract: A polarizing element includes a substrate with protruded threads, and metal thin wires provided on the protruded threads. Each metal thin wire includes a first thin wire provided to a first side surface of the protruded thread and a second thin wire provided to a second side surface of the protruded thread. Each first thin wire has a first volume. Each second thin wire has a second volume. Each metal thin wire has a third volume which is the sum of the first and second volumes. As a distance from one end of the substrate increases, the volume of each first thin wire decreases and the volume of each second thin wire increases so that the third volume is maintained within a predetermined range.
    Type: Grant
    Filed: February 1, 2010
    Date of Patent: July 16, 2013
    Assignee: Seiko Epson Corporation
    Inventor: Yoshitomo Kumai
  • Patent number: 8471984
    Abstract: A polarizing element includes a substrate; a plurality of protruded threads formed on one of surfaces of the substrate in a rough stripe pattern when viewed two-dimensionally, each of the protruded threads having a side surface forming a slope inclined with respect to the one surface of the substrate; and a plurality of metal thin wires each formed on the slope of the each protruded thread so as to be cantilever-supported by the slope and each extended in an extension direction of the protruded thread.
    Type: Grant
    Filed: December 3, 2009
    Date of Patent: June 25, 2013
    Assignee: Seiko Epson Corporation
    Inventor: Yoshitomo Kumai
  • Patent number: 8467017
    Abstract: A polarizing element includes a substrate; a plurality of protruded threads formed on one of surfaces of the substrate in a rough stripe pattern when viewed two-dimensionally, each of the protruded threads having a side surface forming a slope inclined with respect to the one surface of the substrate; a plurality of metal thin wires each formed on the slope of the each protruded thread so as to be cantilever-supported by the slope and each extended in an extension direction of the protruded thread; and a protection film covering the protruded threads and the metal thin wires.
    Type: Grant
    Filed: December 3, 2009
    Date of Patent: June 18, 2013
    Assignee: Seiko Epson Corporation
    Inventor: Yoshitomo Kumai
  • Patent number: 8436969
    Abstract: A photo alignment process and a liquid crystal display using the same are provided. The photo alignment process includes the following steps. A photo alignment material layer is formed on a substrate. The photo alignment material layer is irradiated by a linearly polarized light. A surface of the photo alignment material layer is a first plane. A wave vector of the linearly polarized light is a K vector. A second plane is constructed from a normal vector of the first plane and the K vector. A polarization direction of the linearly polarized light is neither perpendicular nor parallel to the second plane.
    Type: Grant
    Filed: February 20, 2011
    Date of Patent: May 7, 2013
    Assignee: Chimei Innolux Corporation
    Inventors: Yao-Jen Ou, Hang-Lian Lee, Jian-Cheng Chen, Bo-Chin Tsuei
  • Publication number: 20130077028
    Abstract: According to one embodiment, a liquid crystal display device includes a first substrate, a second substrate, a liquid crystal layer, pixels a first polarizer having a first absorption axis, a second polarizer having a second absorption axis, a first retardation film having a first slow axis, and a second retardation film having a second slow axis. Each of the pixels includes a primary pixel electrode and a pair of primary common electrodes. Re1<Re2 holds, Re1+Re2=150±50 nm holds for light having a wavelength of 550 nm, and Rth1+Rth2=?10±50 nm holds for the light having the wavelength of 550 nm.
    Type: Application
    Filed: September 13, 2012
    Publication date: March 28, 2013
    Inventors: Kayoko MIYAZAKI, Keiji Tago
  • Patent number: 8395727
    Abstract: The present invention relates to a VA-mode liquid-crystal display device comprising a front-side polarizing element (14), a rear-side polarizing element (12), a VA-mode liquid-crystal cell (LC) disposed between the front-side polarizing element and the rear-side polarizing element, and a first retardation region (16) comprising one or more retardation layers between the rear-side polarizing element and the VA-mode liquid-crystal cell, wherein the first retardation region satisfies 0 nm?Re(590)?10 nm, and |Rth(590)|?25 nm. Re(?) means retardation (nm) in plane at a wavelength ? nm, and Rth(?) means retardation (nm) along the thickness direction at a wavelength ? nm.
    Type: Grant
    Filed: November 30, 2009
    Date of Patent: March 12, 2013
    Assignee: FUJIFILM Corporation
    Inventor: Makoto Ishiguro
  • Publication number: 20130038823
    Abstract: According to one embodiment, a liquid crystal display device includes a main pixel electrode which extends in a second direction, a sub-pixel electrode which extends in a first direction and crosses the main pixel electrode, a color filter which includes a first aperture portion defined by a first edge surrounding a position opposed to cross points between the main pixel electrode and the sub-pixel electrode, main common electrodes which extend in the second direction on both sides of the main pixel electrode.
    Type: Application
    Filed: May 11, 2012
    Publication date: February 14, 2013
    Inventors: Arihiro Takeda, Tomoko Kozuka, Jin Hirosawa
  • Patent number: 8368849
    Abstract: There is provided a polarizer integrally containing view angle compensating film used in an in-plane switching liquid crystal display (IPS-LCD) filled with liquid crystal (??>0) having positive dielectric anisotropy and an in-plane switching liquid crystal display comprising the same. More particularly, there is provided an integrated polarizer capable of being used to manufacture a thin polarizer and securing a good view angle by employing a view angle compensating film as a protective film of a polarizing film forming the polarizer and an IPS-LCD comprising the same. The integrated polarizer comprises a polarizing film; a protective film attached to one surface of the polarizing film; and a +A plate coated with a +C plate attached to the other surface of the polarizing film. The +C plate is coated in the form of liquid crystals.
    Type: Grant
    Filed: March 24, 2009
    Date of Patent: February 5, 2013
    Assignee: LG Chem, Ltd.
    Inventors: Jnn-Won Chang, Dae-Hee Lee, Moon-Soo Park
  • Publication number: 20130027643
    Abstract: According to one embodiment, a liquid crystal display device includes a main pixel electrode having a first width in a first direction and a first edge extending in a second direction, and a sub-pixel electrode. The sub-pixel electrode has a second width, which is greater than the first width in the first direction, has a third width, which is a maximum width in the first direction at a central portion of the sub-pixel electrode, has a fourth width in the second direction at a position with a first distance from the first edge in the first direction, and has a fifth width, which is less than the fourth width at a position with a second distance, which is greater than the first distance, from the first edge in the first direction.
    Type: Application
    Filed: February 8, 2012
    Publication date: January 31, 2013
    Inventor: Jin HIROSAWA
  • Publication number: 20120313918
    Abstract: This disclosure provides a liquid crystal display panel, comprising a first polarizer sheet, a liquid crystal layer and a second polarizer sheet from the bottom up in this order. A first biaxial ¼ wave plate and a first biaxial ½ wave plate for expanding the wavelength range of the first biaxial ¼ wave plate are provided, in order from the top down, between the liquid crystal layer and the first polarizer sheet; and a second biaxial ¼ wave plate and a second biaxial ½ wave plate for expanding the wavelength range of the second biaxial ¼ wave plate are, in order from the bottom up, between the liquid crystal layer and the second polarizer sheet.
    Type: Application
    Filed: June 7, 2012
    Publication date: December 13, 2012
    Applicant: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Guangkui QIN, Jaegeon YOU, Teruaki SUZUKI
  • Patent number: 8294852
    Abstract: An E-type polarizing layer is provided between a pair of orthogonally oriented O-type polarizing layers, and alternatively, an O-type polarizing layer and an E-type polarizing layer which are oriented orthogonal to each other are provided. When a liquid crystal layer has a slow axis, the E-type polarizing layer is disposed so that an absorption axis thereof is orthogonal to the slow axis. Therefore, a liquid crystal display device having a wide viewing angle is realized in which a contrast ratio is improved by suppressing a light leakage occurring when observed from an oblique direction.
    Type: Grant
    Filed: August 20, 2010
    Date of Patent: October 23, 2012
    Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Masaya Adachi, Takato Hiratsuka
  • Patent number: 8279363
    Abstract: A three-dimensional (3D) display apparatus is provided. The 3D display apparatus includes a display device, a twisted nematic (TN) liquid crystal panel, and a lens unit. The display device is configured to output first polarized lights of an image. The TN liquid crystal panel is coupled to the display device and containing a plurality of controllable pixel display areas to receive the polarized lights with a first polarization direction from the display device. Each pixel display area is capable of being in a first state in which the first polarization direction is transformed into a second polarization direction different from the first polarization direction and a second state in which the first polarization direction is maintained.
    Type: Grant
    Filed: October 18, 2010
    Date of Patent: October 2, 2012
    Assignee: SuperD Co., Ltd.
    Inventors: Zhang Ge, Fuzhong Guo
  • Publication number: 20120229739
    Abstract: A liquid crystal display device (100) according to the present invention includes a vertical alignment type liquid crystal layer (3); and a pair of optical alignment films (12, 22). A plurality of picture elements (R, G, B, Y) each include four liquid crystal domains (D1 through D4) in which tilt directions of liquid crystal molecules when a voltage is applied are different. The four liquid crystal domains are located in a matrix of 2 rows×2 columns. The pair of optical alignment films have such an alignment regulation force that causes an identical alignment pattern to appear in repetition in the liquid crystal layer along a first direction which is parallel to one of a row direction and a column direction, with 2n pixels (n is an integer of 1 or greater) being a minimum unit.
    Type: Application
    Filed: November 16, 2010
    Publication date: September 13, 2012
    Inventors: Iichiroh Inoue, Koichi Miyachi, Hidetoshi Nakagawa, Akihiro Shohraku
  • Patent number: 8259262
    Abstract: Provided is a liquid crystal display apparatus including: a liquid crystal panel including a pair of substrates; a liquid crystal layer sandwiched by the pair of substrates; plural electrodes formed on at least one of the pair of substrates; and a pair of polarizers provided in respective outsides of the pair of substrates; and a back light unit provided in a rear of the liquid crystal panel, in which one of the pair of polarizers, which is provided at a side of the back light unit, includes at least two types of layers which cause polarization, and in which the two types of layers include a first layer provided on a side of the liquid crystal layer and a second layer provided on a side of the back light unit, the first layer being a negative uniaxial polarizer layer, the second layer being a positive uniaxial polarizer layer.
    Type: Grant
    Filed: August 12, 2009
    Date of Patent: September 4, 2012
    Assignees: Hitachi Displays, Ltd., Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Yuka Utsumi, Ikuo Hiyama, Katsumi Kondo, Shigeru Matsuyama
  • Patent number: 8223298
    Abstract: An optical pulse shaper includes an optical delay line; a spatial light modulator placed at the Fourier plane of the optical delay line having a spectral amplitude spatial light modulator; a spectral phase and polarization ellipticity spatial light modulator; and a spectral polarization rotator; and a controller configured to independently control an amplitude, a phase and polarization ellipticity, and a linear polarization of an optical pulse. A method for shaping an optical pulse is also provided.
    Type: Grant
    Filed: June 18, 2009
    Date of Patent: July 17, 2012
    Assignee: Raytheon Company
    Inventors: Joshua J. Thornes, Robin A. Reeder, Steven R. Wilkinson
  • Patent number: 8193531
    Abstract: A technology for reducing distance between adjacent pixel electrodes to smaller than the limit set by conventional process margin and also preventing adjacent pixel electrodes from being short circuited is provided.
    Type: Grant
    Filed: February 28, 2008
    Date of Patent: June 5, 2012
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Akira Ishikawa, Yoshiharu Hirakata
  • Publication number: 20120086893
    Abstract: A photo alignment process and a liquid crystal display using the same are provided. The photo alignment process includes the following steps. A photo alignment material layer is formed on a substrate. The photo alignment material layer is irradiated by a linearly polarized light. A surface of the photo alignment material layer is a first plane. A wave vector of the linearly polarized light is a K vector. A second plane is constructed from a normal vector of the first plane and the K vector. A polarization direction of the linearly polarized light is neither perpendicular nor parallel to the second plane.
    Type: Application
    Filed: February 20, 2011
    Publication date: April 12, 2012
    Applicant: CHIMEI INNOLUX CORPORATION
    Inventors: Yao-Jen OU, Hang-Lian LEE, Jian-Cheng CHEN, Bo-Chin TSUEI
  • Publication number: 20120038860
    Abstract: A liquid crystal display device includes first and second substrate facing each other, a pixel electrode and a common electrode on an inner surface of the first substrate and generating an electric field substantially parallel to the first substrate, a first alignment layer on the inner surface of the first substrate and homeotropically aligned, a first polarizer on an outer surface of the first substrate and having a first polarization axis, a second alignment layer on an inner surface of the second substrate and homogeneously aligned, a second polarizer on an outer surface of the second substrate and having a second polarization axis perpendicular to the first polarization axis, and a liquid crystal layer between the first and second alignment layers.
    Type: Application
    Filed: August 11, 2011
    Publication date: February 16, 2012
    Inventors: Wook-Sung KIM, Su-Seok Choi
  • Patent number: 8098352
    Abstract: The present invention is directed to the provision of an optical pickup apparatus in which a liquid crystal optical element constructed by combining an aberration correcting liquid crystal panel and a ?/4 liquid crystal panel in an integral fashion is mounted in a tilted position. More particularly, the invention provides a liquid crystal optical element comprising a first liquid crystal layer for correcting aberration, a second liquid crystal layer functioning as an n?/4 plate and combined in an integral fashion with the first liquid crystal layer, a transparent electrode for generating a potential difference on the second liquid crystal layer in order to control an amount of phase difference for the light beam passing through the second liquid crystal layer, and a driver for driving the transparent electrode so as to generate a potential difference that is the lowest among a plurality of potential differences that cause the second liquid crystal layer to function as an n?/4 plate.
    Type: Grant
    Filed: March 5, 2007
    Date of Patent: January 17, 2012
    Assignee: Citizen Holdings Co., Ltd.
    Inventors: Naoki Fujii, Shuji Naka, Yoshiharu Takane
  • Patent number: 8094265
    Abstract: The present invention relates to a liquid crystal display, comprising a lower alignment film formed on a lower substrate; an upper alignment film formed on an upper substrate; a liquid crystal layer sandwiched between the lower and upper substrates; a phase compensation film adhered on the outer surface of the upper substrate; and a polarizer adhered on the phase compensation film wherein the lower alignment film has an alignment angle of ?10 to 20° with respect to a horizontal line, the upper alignment film has an alignment angle of 40 to 55° with respect to a horizontal line, the liquid crystal layer has a phase delay value (d?n) of 0.24-0.27 ?m, the phase compensation film has a phase compensation function of ?/4 and also has an optical axis making 140-146° with a horizontal line, and the polarizer has a absorption axis making 120 to 122.5° with a horizontal line.
    Type: Grant
    Filed: August 21, 2009
    Date of Patent: January 10, 2012
    Assignee: Hydis Technologies Co., Ltd.
    Inventors: Dong Hae Suh, Young Il Park, Hee Cheol Kim, Hwan Su Shim, Won Geon Lee
  • Patent number: 8094264
    Abstract: The present invention relates to a liquid crystal display, comprising a lower alignment film formed on a lower substrate; an upper alignment film formed on an upper substrate; a liquid crystal layer sandwiched between the lower and upper substrates; a phase compensation film adhered on the outer surface of the upper substrate; and a polarizer adhered on the phase compensation film wherein the lower alignment film has an alignment angle of ?10 to 20° with respect to a horizontal line, the upper alignment film has an alignment angle of 40 to 55° with respect to a horizontal line, the liquid crystal layer has a phase delay value (d?n) of 0.24-0.27 ?m, the phase compensation film has a phase compensation function of ?/4 and also has an optical axis making 140-146° with a horizontal line, and the polarizer has a absorption axis making 120 to 122.5° with a horizontal line.
    Type: Grant
    Filed: August 21, 2009
    Date of Patent: January 10, 2012
    Assignee: Hydis Technologies Co., Ltd.
    Inventors: Dong Hae Suh, Young Il Park, Hee Cheol Kim, Hwan Su Shim, Won Geon Lee
  • Publication number: 20110242462
    Abstract: A polarizing plate for a liquid crystal display is provided and includes a first protective film, a polarizer, a second protective film and a light diffusion layer in order. The light diffusion layer is a layer including a translucent resin and translucent particles having a refractive index different from a refractive index of the translucent resin. The internal haze of the light diffusion layer is 45% to 80%.
    Type: Application
    Filed: June 15, 2011
    Publication date: October 6, 2011
    Applicant: FUJIFILM Corporation
    Inventors: Junichi HIRAKATA, Minoru WADA, Yukito SAITOH, Yusuke OHASHI, Katsufumi OHMURO
  • Patent number: 8004632
    Abstract: A flat display device includes a flat display panel, an upper polarizing plate disposed on a light exit plane of the flat display panel, and a lower polarizing plate disposed on a light entrance plane of the flat display panel. The upper polarizing plate includes a wide view film, and its absorption axis and a horizontal view direction of the flat display panel have an included angle of about 15 degrees. The absorption axis of the lower polarizing plate and the horizontal view direction of the flat display panel have an included angle of about 105 degrees.
    Type: Grant
    Filed: October 14, 2008
    Date of Patent: August 23, 2011
    Assignee: BenQ Materials Corporation
    Inventors: Shih-Wei Chao, Ying-Ying Chu, Chun-Hung Lin
  • Patent number: 7993017
    Abstract: A projection display apparatus 101 in which the light quantity adjusting means has a simple and readily interchangeable structure, and which can improve image quality by adjusting the quantity of light received by a light valve continuously, without causing illuminance irregularities, and without having unwanted light radiated onto the screen, the light quantity adjusting means 9 having light blocking members 91L, 91R for blocking light in transit to a second lens array 22, and rotational axes 91LA, 91RA for turnably supporting each of the light blocking members on an xy plane, the light blocking members 91L, 91R and rotational axes 91LA, 91RA being positioned so that the rotational axes 91LA, 91RA are disposed in positions symmetric with respect to the optical axis AX on the xy plane, and the turning range from the light blocking initiation position at which the light blocking members 91L, 91R, by being turned, start to block light in transit toward the second lens array 22 to the maximum light blocking posi
    Type: Grant
    Filed: October 29, 2007
    Date of Patent: August 9, 2011
    Assignee: Mitsubishi Electric Corporation
    Inventors: Akihiro Yamada, Motoo Takahashi, Akira Daijogo, Tomohiro Bessho, Kenji Samejima
  • Patent number: 7995179
    Abstract: An electro-optical device includes, a first substrate, a second substrate, an electrooptic material layer, an illuminating device, and a polarizing device. The electrooptic material layer is held between the first substrate and the second substrate. The illuminating device irradiates illumination light to an outer surface of the first substrate. The polarizing device is provided on the outer surface of the first substrate. The electrooptic material layer exhibits optical isotropy when no electric field is applied, and, when an electric field is applied, exhibits optical anisotropy corresponding to the magnitude of the electric field. The electrooptic material layer further has a characteristic to selectively reflect a first circularly polarized light having a first rotation direction. Light that passes through the polarizing device is a second circularly polarized light that has a second rotation direction reverse to the first rotation direction of the first circularly polarized light.
    Type: Grant
    Filed: October 6, 2008
    Date of Patent: August 9, 2011
    Assignee: Sony Corporation
    Inventor: Akihide Haruyama
  • Patent number: 7964251
    Abstract: A liquid crystal display device of an in-plane switching mode comprises a pair of polarizing plates which are constituted with a polarizing plate at the output side comprising a polarizer at the output side and a polarizing plate at the incident side comprising a polarizer at the incident side having a transmission axis approximately perpendicular to a transmission axis of the polarizer at the output side and two or more sheets of optically anisotropic members and liquid crystal cells disposed between the pair of polarizing plates. The device exhibits excellent scratch resistance and excellent quality of black depth and uniform and high contrast in viewing at any angles.
    Type: Grant
    Filed: December 26, 2005
    Date of Patent: June 21, 2011
    Assignee: Panasonic Electric Works Co., Ltd.
    Inventors: Takeyuki Yamaki, Hiroshi Yokogawa, Akira Tsujimoto, Ryozo Fukuzaki, Tetsuya Toyoshima, Masanori Yoshihara, Kohei Arakawa
  • Patent number: 7956956
    Abstract: An ECB-mode liquid crystal display device having a pair of substrates 9 and 12, a liquid crystal layer 11, a pair of polarizing plates (1,3,5) (16,18,20) and at least one optically anisotropic layer 7 and/or 14, wherein they are disposed such that the absorption axes 4 and 19 of the polarizing films 3 and 18 in the polarizing plates are parallel or vertical to the left-rightward direction of the screen of the display device. The orientation axes 10 and 13 of the substrates 9 and 12 and the orientation axes 8 and 15 of the optically anisotropic layers 7 and 14 preferably cross the absorption axes 4 and 19 of the polarizing films 3 and 18 of the adjacent polarizing plates at an angle of 45°.
    Type: Grant
    Filed: January 10, 2007
    Date of Patent: June 7, 2011
    Assignee: FUJIFILM Corporation
    Inventors: Yukito Saitoh, Yusuke Ohashi, Katsufumi Ohmuro
  • Publication number: 20110102713
    Abstract: The present invention provides a multi-domain type liquid crystal display device with a vertical alignment liquid crystal layer that can get a display operation done without making the viewer sense any unnaturalness and with the decrease in optical transmittance minimized. In the liquid crystal display device of this invention, the liquid crystal layer of each pixel has liquid crystal regions in which liquid crystal molecules tilt in multiple different directions when a voltage is applied between first and second electrodes. Each pixel has an opaque portion arranged on a boundary between the liquid crystal regions. The opaque portion is provided for at least one of the substrates so that when a voltage is applied between the first and second electrodes, the liquid crystal molecules neighboring the boundary will tilt while turning one of their end portions, which is closer to the substrate with the opaque portion, away from the boundary.
    Type: Application
    Filed: March 30, 2009
    Publication date: May 5, 2011
    Inventors: Yoshito Hashimoto, Hiroyuki Ohgami, Masayuki Soga, Masakazu Shibasaki, Masumi Kubo