Multiple Compensators Patents (Class 349/119)
  • Patent number: 11119381
    Abstract: A method for directing light beams includes generating a light beam along a light path. A voltage differential is created by generating a voltage in a first and second linear electrode contacts arranged such that the first and second linear electrical contacts alternate with each other. The light path is altered by passing the light beam through a liquid crystal device coupled to the first and second linear electrical contacts.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: September 14, 2021
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventor: Sajjad A. Khan
  • Patent number: 11079645
    Abstract: A display comprises a polarised output spatial light modulator, switchable liquid crystal retarder, absorbing polariser and touch panel electrodes. The switchable liquid crystal layer is stabilised by a cured reactive mesogen material during application of an applied voltage. Light scatter in privacy mode is reduced and visual security level enhanced. Visibility of disclinations during application of applied pressure, for example from a finger on a touch screen is minimised.
    Type: Grant
    Filed: June 21, 2019
    Date of Patent: August 3, 2021
    Assignee: RealD Spark, LLC
    Inventors: Jonathan Harrold, Graham J. Woodgate, Robert Ramsey
  • Patent number: 11073731
    Abstract: An array substrate, a display panel and a display device are disclosed. The array substrate includes a first data line and a second data line which extend substantially along a first direction and are adjacent to each other, a first gate line and a second gate line that extend substantially along a second direction intersected with the first direction and are adjacent to each other, and at least two sub-pixels which are sequentially arranged in parallel along the first direction; the first gate line and the second gate line are disposed at two sides of the at least two sub-pixels in the first direction, respectively.
    Type: Grant
    Filed: November 2, 2017
    Date of Patent: July 27, 2021
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yoon Sung Um, Shunhang Zhang, Yun Sik Im
  • Patent number: 10999931
    Abstract: A manufacturing method of a display device is disclosed. The method includes the following steps. A first substrate having a first region and a second region is provided. A second substrate is disposed on the first substrate. The second substrate is overlapping the first region. At least one drive IC is disposed on the second region. A protection layer is disposed on the second region. The protection layer is disposed enclosing the at least one drive IC. The protection layer has a maximum height larger than a maximum height of the at least one drive IC.
    Type: Grant
    Filed: October 24, 2019
    Date of Patent: May 4, 2021
    Assignee: INNOLUX CORPORATION
    Inventors: Chin-Cheng Kuo, Chia-Chun Yang, Wen-Cheng Huang
  • Patent number: 10788711
    Abstract: An in-plane switching (IPS) mode liquid crystal display (LCD) device includes a liquid crystal display panel having a first substrate, a second substrate, and a liquid crystal layer between the first and second substrates; a second polarizer on an outer surface of the second substrate, the second polarizer having a second polarizing element; and an in-cell retarder on an inner surface of the second substrate, wherein the in-cell retarder compensates a light leakage in a front direction of the liquid crystal display panel.
    Type: Grant
    Filed: September 30, 2019
    Date of Patent: September 29, 2020
    Assignee: LG Display Co., Ltd.
    Inventors: JeongHwan Kim, YongHak Park, JaeHyun Lee, SooWon Hwang
  • Patent number: 10788710
    Abstract: A privacy display comprises a spatial light modulator and a compensated switchable liquid crystal retarder arranged between first and second polarisers arranged in series with the spatial light modulator. In a privacy mode of operation, on-axis light from the spatial light modulator is directed without loss, whereas off-axis light has reduced luminance. The visibility of the display to off-axis snoopers is reduced by means of luminance reduction over a wide polar field. In a wide angle mode of operation, the switchable liquid crystal retardance is adjusted so that off-axis luminance is substantially unmodified.
    Type: Grant
    Filed: May 28, 2019
    Date of Patent: September 29, 2020
    Assignee: RealD Spark, LLC
    Inventors: Michael G. Robinson, Graham J. Woodgate, Robert A. Ramsey, Jonathan Harrold
  • Patent number: 10788712
    Abstract: A multi-function light-adjusting glass includes first and second substrates delimiting an intermediate space therebetween, a light-adjusting layer disposed in the intermediate space, and a first polarizing board located at an outer side of the first substrate away from the intermediate space, and a second polarizing board located at an outer side of the second substrate away from the intermediate space. Each substrate includes an electrically conductive film on an inner surface of the substrate facing the intermediate space, and an alignment film disposed between the electrically conductive film and the intermediate space. The two alignment films respectively have two alignment directions orthogonal to each other. The light-adjusting layer includes liquid crystal molecules and salt-in ions.
    Type: Grant
    Filed: June 24, 2019
    Date of Patent: September 29, 2020
    Assignee: NATIONAL SUN YAT-SEN UNIVERSITY
    Inventors: Tsung-Hsien Lin, Cheng-Chang Li, Heng-Yi Tseng, Hung-Chang Jau, Duan-Yi Guo, Li-Min Chang
  • Patent number: 10754218
    Abstract: A substrate detection device and method are provided. The substrate detection device includes: a base platform; and a birefringence structure; the base platform comprising a light source and a bearing platform; the bearing platform being configured to place the substrate to be detected; the light source being configured to illuminate the substrate to be detected from one side, close to the bearing platform, of the substrate to be detected. The phase difference of the lights is increased by a birefringence structure layer, such that interfere may happen with some lights having a relatively smaller phase difference. The difference in brightness of different regions on the light-outgoing side of the birefringence structure layer increases, such that the non-uniformity on the substrate manifests more easily. Therefore, the effect of avoiding the missed detection is achieved.
    Type: Grant
    Filed: August 30, 2018
    Date of Patent: August 25, 2020
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD
    Inventor: Tingting Zhao
  • Patent number: 10668690
    Abstract: The present invention provides: an optical laminate comprising at least two films, the optical laminate comprising at least a film A satisfying a given condition (1) and a film C satisfying a given condition (2), wherein a retardation value Re(0) observed in a direction of an axis perpendicular to a plane of the optical laminate is 4,000 to 30,000 nm, and a retardation value Re(40) observed in a direction of an axis tilted from the axis perpendicular to the plane of the optical laminate toward a slow axis by 40 degrees in a plane lying perpendicular to the plane of the optical laminate and extending along the slow axis is 4,000 to 25,000 nm, the slow axis being an axis along which refractive index is highest in a plane of the film A; and a display device comprising the optical laminate.
    Type: Grant
    Filed: June 30, 2017
    Date of Patent: June 2, 2020
    Assignees: DAI NIPPON PRINTING CO., LTD.
    Inventors: Seiichi Isojima, Takashi Kuroda
  • Patent number: 10636999
    Abstract: An object of the invention is to provide a novel laminate and a novel image display device which have both of a gas barrier function and a circular polarization conversion function and have a reduced thickness as compared to those in the related art. A laminate of the invention has a substrate, an inorganic layer, an alignment film, and an organic layer in this order, and the organic layer contains a liquid crystal compound.
    Type: Grant
    Filed: July 18, 2017
    Date of Patent: April 28, 2020
    Assignee: FUJIFILM Corporation
    Inventors: Junichi Hirakata, Yuya Hamaguchi
  • Patent number: 10502966
    Abstract: The present application discloses a liquid crystal lens. The liquid crystal lens comprises: a first electrode; a second electrode; a liquid crystal layer located between the first and the second electrode; a third electrode, located at a side of the first electrode away from the liquid crystal layer; and a driving means. The driving means is configured to: in a 3D display mode, apply voltages to the first and the second electrode to generate an electric field, such that liquid crystal molecules in the liquid crystal layer are deflected to a first state and form a plurality of lens units, and when switching from the 3D display mode to a 2D display mode, apply voltages to the first and the third electrode to generate an electric field, such that the liquid crystal molecules in the liquid crystal layer are deflected to a second state and form no lens unit.
    Type: Grant
    Filed: May 16, 2017
    Date of Patent: December 10, 2019
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., ORDOS YUANSHENG OPTOELECTRONICS CO., LTD.
    Inventors: Xiangdong Wei, Xue Dong, Dan Wang, Yun Qiu, Lihua Liu
  • Patent number: 10473980
    Abstract: An in-plane switching (IPS) mode liquid crystal display (LCD) device includes a liquid crystal display panel having a first substrate, a second substrate, and a liquid crystal layer between the first and second substrates; a second polarizer on an outer surface of the second substrate, the second polarizer having a second polarizing element; and an in-cell retarder on an inner surface of the second substrate, wherein the in-cell retarder compensates a light leakage in a front direction of the liquid crystal display panel.
    Type: Grant
    Filed: August 17, 2015
    Date of Patent: November 12, 2019
    Assignee: LG Display Co., Ltd.
    Inventors: JeongHwan Kim, YongHak Park, JaeHyun Lee, SooWon Hwang
  • Patent number: 10431777
    Abstract: An object of the invention is to provide a novel laminate and a novel image display device which have both of a gas barrier function and a circular polarization conversion function and have a reduced thickness as compared to those in the related art. A laminate of the invention has a substrate, an organic layer A, an inorganic layer B, and an organic layer B in this order, and at least one of the organic layer A or the organic layer B contains a liquid crystal compound.
    Type: Grant
    Filed: July 19, 2017
    Date of Patent: October 1, 2019
    Assignee: FUJIFILM Corporation
    Inventors: Junichi Hirakata, Yuya Hamaguchi
  • Patent number: 10310153
    Abstract: The present invention provides a polarizer excellent in transmittance even if it includes a light-transmitting substrate having no in-plane phase difference. The present invention relates to a polarizer configured to be disposed on a backlight source side in an image display device, the polarizer including at least a light-transmitting substrate having in-plane birefringence and a polarizing element layered in said order from the backlight source side, the light-transmitting substrate receiving incidence of polarized light, the light-transmitting substrate and the polarizing element being layered such that a fast axis of the light-transmitting substrate along a direction in which the substrate shows a smaller refractive index and a transmission axis of the polarizing element form an angle of 0°±30° or 90°±30°.
    Type: Grant
    Filed: August 6, 2014
    Date of Patent: June 4, 2019
    Assignee: DAI NIPPON PRINTING CO., LTD.
    Inventor: Takashi Kuroda
  • Patent number: 10222654
    Abstract: According to one embodiment, a liquid crystal display device includes an array substrate, a counter-substrate, a negative liquid crystal layer including liquid crystal molecules, a retardation film attached to a surface of the array substrate, a first polarizer attached to the retardation film and having a first absorption axis, a second polarizer attached to a surface of the counter-substrate, and having a second absorption axis which is parallel to a direction of initial alignment of the liquid crystal molecules and perpendicular to the first absorption axis, a cover member located opposite to the second polarizer, and ultraviolet curing resin which bonds the second polarizer and the cover member to each other.
    Type: Grant
    Filed: December 19, 2017
    Date of Patent: March 5, 2019
    Assignee: JAPAN DISPLAY INC.
    Inventor: Keiji Tago
  • Patent number: 10207474
    Abstract: A multilayer film including: a first long-length substrate; and an optically anisotropic layer that is formed directly on the first substrate and contains cured liquid crystal molecules, wherein the first substrate has an Nz factor of 1.1 to 3.0, variation of orientation angle of 1.0° or less, and an orientation-regulating force caused by stretching, and an angle formed between a slow axis of the first substrate and a widthwise direction of the first substrate is 0° or more and less than 90°; and manufacturing method and use thereof.
    Type: Grant
    Filed: January 20, 2016
    Date of Patent: February 19, 2019
    Assignee: ZEON CORPORATION
    Inventors: Hiromasa Hashimoto, Masakazu Saito
  • Patent number: 10162469
    Abstract: [Object] In a touch screen in which an electrode portion is formed on a base film, a pattern of the electrode portion is made less visible. [Solution] A touch screen 1 includes a first base film 11, a first transparent electrode 15, a second base film 13, a second transparent electrode 17, and a second intermediate base film 21. The first transparent electrode 15 is formed on the first base film 11. The second base film 13 is placed to face the first base film 11. The second transparent electrode 17 is formed on the second base film 13. The second intermediate base film 21 has a retardation value of 3000 nm or more and is placed so that a contraction direction thereof and contraction directions of the first base film 11 and the second base film 13 are matched.
    Type: Grant
    Filed: November 18, 2015
    Date of Patent: December 25, 2018
    Assignee: NISSHA PRINTING CO., LTD.
    Inventors: Takashi Yokoyama, Takao Ichihara, Kenji Okumura, Kazuhiro Nishikawa
  • Patent number: 10073204
    Abstract: Optical film stacks are described. More particularly, optical film stacks including a half-wave retardation layer are described. Achromatic half-wave retardation layers, including achromatic half-wave layers formed from a quarter-wave and a three-quarters-wave retardation layer, are described. Film stacks including reflective polarizers tuned to reduce wavelength dispersion of the half-wave retardation layer are also described.
    Type: Grant
    Filed: November 24, 2014
    Date of Patent: September 11, 2018
    Assignee: 3M INNOVATIVE PROPERTIES COMPANY
    Inventors: Sun-Yong Park, Song-Geun Lee, Matthew B. Johnson, Adam D. Haag
  • Patent number: 10066975
    Abstract: An environmental seal is formed around a square sensor disposed beneath a circular button cap within a button assembly. The button assembly includes shelf portions each extending separately into the interior of the assembly from a sidewall of the assembly. Portions of the sidewall are exposed between the shelf portions large enough to permit the four corners of the square sensor to contact the sidewall. The button cap is set above the sensor, resting upon the shelf portions. A first sealant bonds the top faces of the shelf portions to the bottom of the button cap. A second sealant bonds the edges of the sidewall to the corners of the sensor. The second sealant interfaces with the first sealant to form a complete environmental seal.
    Type: Grant
    Filed: January 15, 2016
    Date of Patent: September 4, 2018
    Assignee: APPLE INC.
    Inventors: Matthew P. Rao, Scott A. Myers, James R. Krogdahl, Alex M. Lee
  • Patent number: 9874781
    Abstract: According to one embodiment, a liquid crystal display device includes an array substrate, a counter-substrate, a negative liquid crystal layer including liquid crystal molecules, a retardation film attached to a surface of the array substrate, a first polarizer attached to the retardation film and having a first absorption axis, a second polarizer attached to a surface of the counter-substrate, and having a second absorption axis which is parallel to a direction of initial alignment of the liquid crystal molecules and perpendicular to the first absorption axis, a cover member located opposite to the second polarizer, and ultraviolet curing resin which bonds the second polarizer and the cover member to each other.
    Type: Grant
    Filed: August 28, 2015
    Date of Patent: January 23, 2018
    Assignee: Japan Display Inc.
    Inventor: Keiji Tago
  • Patent number: 9835770
    Abstract: A functional polarizing film includes a polarizing layer, at least one moisture-binding layer on a first surface of the polarizing layer, and at least one moisture-blocking layer disposed on a first surface of the moisture-binding layer.
    Type: Grant
    Filed: April 23, 2014
    Date of Patent: December 5, 2017
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Nam Jin Kim, Chul Hwan Park, Sang Woo Kim, Mi Kyung Kim
  • Patent number: 9753200
    Abstract: An organic light emitting diode display including: a display panel; a first retarder on the display panel and including a first reactive liquid crystal; a second retarder on the first retarder and including a second reactive liquid crystal; and a polarizer on the second retarder, wherein a first optical axis of the first reactive liquid crystal is inclined by 2?+45° relative to an absorption axis of the polarizer, and a second optical axis of the second reactive liquid crystal is inclined by ? relative to the absorption axis of the polarizer.
    Type: Grant
    Filed: October 16, 2015
    Date of Patent: September 5, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hee Young Lee, Yun Jang, Hyeon Jeong Sang, Eun Mi Seo, Suk Choi
  • Patent number: 9726923
    Abstract: The present invention provides a touch LCM comprising an array substrate and a color film substrate provided opposite to each other, wherein an optical film set is provided at a side of the color film substrate away from the array substrate, comprising a touch signal feedback layer, a touch signal receiving layer and an upper polarizer film provided there between. With the design of integrating the upper polarizer film, the touch signal feedback layer and the touch signal receiving layer into the optical film set, the optical film set has both the polarizing function in the conventional sense and the function of touch electrode.
    Type: Grant
    Filed: December 16, 2013
    Date of Patent: August 8, 2017
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Xiaochuan Chen, Hailin Xue, Chuncheng Che, Lei Wang, Yanna Xue
  • Patent number: 9720280
    Abstract: A compensation film includes: a first retardation layer including a polymer; a second retardation layer including a liquid crystal having positive birefringence; and a compensation layer including a liquid crystal having a vertical alignment property, where an angle between slow axes of the first and second retardation layers is in a range of about 85 to about 95 degrees, an entire in-plane retardation (Re0) of the first retardation layer, the second retardation layer and the compensation layer for wavelengths of 450 nm, 550 nm and 650 nm satisfy the following inequation: Re0(450 nm)<Re0(550 nm)<Re0(650 nm), an in-plane retardation (Re3) of the compensation layer for the incident light having a wavelength of about 550 nm is in a range of about zero to about 50 nm, and a thickness direction retardation (Rth3) of the compensation layer for the incident light is less than zero.
    Type: Grant
    Filed: March 13, 2014
    Date of Patent: August 1, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hyung Jun Kim, Sang ah Gam, Myung Sup Jung, Hyun-Seok Choi
  • Patent number: 9638957
    Abstract: An embodiment of present invention discloses a liquid crystal display provided with viewing angle compensation. The liquid crystal display provided with viewing angle compensation comprises a liquid crystal cell in a vertical arrangement, upper and lower polarizer sheets, and further comprises the first biaxial compensation film provided between the liquid crystal cell and the lower polarizer sheet, the second biaxial compensation film provided between the liquid crystal cell and the upper polarizer sheet, and a monoaxial compensation film provided at the upside and/or downside of the liquid crystal cell. The embodiment of present invention may be applicable for the viewing angle compensation in wide viewing-angle techniques.
    Type: Grant
    Filed: October 8, 2012
    Date of Patent: May 2, 2017
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yafeng Yang, Guangkui Qin, Jiaoming Lu, Jaegeon You
  • Patent number: 9557450
    Abstract: A pressure-sensitive adhesive layer-attached polarizing film of the invention includes: a polarizing film; and a pressure-sensitive adhesive layer provided on the polarizing film, wherein the polarizing film includes a polarizer and a transparent protective film provided on only one side of the polarizer, the pressure-sensitive adhesive layer is provided on a side of the polarizer where the transparent protective film is absent, and the pressure-sensitive adhesive layer is made of a pressure-sensitive adhesive composition containing a (meth)acryl-based polymer (A) and an alkali metal salt (B). The pressure-sensitive adhesive layer-attached polarizing film has a pressure-sensitive adhesive layer with an antistatic function and satisfactory durability and whose optical properties are less likely to be degraded.
    Type: Grant
    Filed: May 24, 2012
    Date of Patent: January 31, 2017
    Assignee: NITTO DENKO CORPORATION
    Inventors: Atsushi Yasui, Yuusuke Toyama, Tomoyuki Kimura, Masayuki Satake, Shusaku Goto, Takeharu Kitagawa, Minoru Miyatake, Tomohiro Mori, Takashi Kamijo
  • Patent number: 9482802
    Abstract: A method for producing a long retardation film having an optical axis in an oblique direction relative to the length direction of the long retardation film is provided.
    Type: Grant
    Filed: August 7, 2014
    Date of Patent: November 1, 2016
    Assignee: SUMITOMO CHEMICAL COMPANY, LIMITED
    Inventors: Mitsutaka Sase, Nobuyuki Hatanaka, Tadahiro Kobayashi
  • Patent number: 9399317
    Abstract: Method for producing a phase difference plate includes step of forming a layered body including resin-layer (a) containing resin-A having a positive intrinsic birefringence, resin-layer (b) contains resin-B having a negative intrinsic birefringence and is provided on a surface of resin-layer (a), and resin-layer (c) contains resin-C having positive intrinsic birefringence and is provided on another surface opposite to the resin-layer (a) of resin-layer (b); a first step of stretching the layered body in one direction at temperature T1 and stretching ratio of 3 times or more; and a second stretching step of, after the first stretching step, stretching the layered body in another direction approximately orthogonal to the stretching direction at a temperature T2 that is lower than temperature T1 to obtain a phase difference plate, wherein resin-C contains polymer X having a positive intrinsic birefringence and cross-linked particles of polymer Y having a negative intrinsic birefringence.
    Type: Grant
    Filed: February 27, 2013
    Date of Patent: July 26, 2016
    Assignee: ZEON CORPORATION
    Inventor: Hironari Sudeji
  • Patent number: 9368759
    Abstract: A display device includes a display unit for displaying an image, a first retarder provided on the display panel, a first polarizing plate provided on the first retarder, a touch unit provided on the first polarizing plate, a second retarder provided on the touch unit, and a second polarizing plate provided on the second retarder. With this arrangement, external light entering into the display may either be transmitted or reflected off of the touch unit, and in either case, be absorbed by the second polarizing plate without leaving the display device.
    Type: Grant
    Filed: October 24, 2012
    Date of Patent: June 14, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sung-Chul Kim, Jae-Myong Yoo, Ung-Sik Kim, Tae-Soo Kim
  • Patent number: 9357042
    Abstract: A handheld electronic device has a display side and a back side opposite to the display side. The handheld electronic device includes a case, a host system, an optical device, an opening region, and a liquid crystal light valve. The host system and the optical device are disposed in the case, and the optical device is electrically coupled to the host system. The opening region is located on the display side or the back side to expose the optical device. The liquid crystal light valve is disposed in the opening region and is electrically coupled to the host system to control the luminous flux passing through the opening region.
    Type: Grant
    Filed: September 6, 2012
    Date of Patent: May 31, 2016
    Assignee: HTC CORPORATION
    Inventor: Chi-Yi Liao
  • Patent number: 9285630
    Abstract: A transparent display is disclosed. The display includes a self-emitting display unit, a first polarizing unit arranged on a viewing side of the self-emitting display unit, a liquid crystal module, and a second polarizing unit. The liquid crystal module and the second polarizing unit are arranged on a backlight side of the self-emitting display unit. In addition, the liquid crystal module is configured to adjust a display contrast of the self-emitting display unit.
    Type: Grant
    Filed: November 20, 2013
    Date of Patent: March 15, 2016
    Assignee: Shanghai Tianma Micro-Electronics Co., Ltd.
    Inventor: Junhui Lou
  • Patent number: 9274376
    Abstract: The present invention provides a liquid crystal display device which enables costs to be reduced, excels in productivity, and enables a high contrast ratio over a wide viewing angle range to be realized.
    Type: Grant
    Filed: March 23, 2012
    Date of Patent: March 1, 2016
    Assignee: SHARP KABUSHIKI KAISHA
    Inventor: Akira Sakai
  • Patent number: 9158157
    Abstract: An LCD includes a TAC film, a PVA film, a biaxial compensation film, an LC cell, a second TAC film, a second PVA film, and a third TAC film from the incident surface to the emitting surface. The biaxial compensation film is used for providing a first retardation value and a second retardation value by adjusting thickness and by adjusting a first refractive index, a second refractive index, and a third refractive index. The second TAC film is used for providing a third retardation value by adjusting thickness and by adjusting a fourth refractive index, a fifth refractive index, and a sixth refractive index corresponding to the light in the first direction, the light in the second direction, and the light in the third direction, respectively. Leakage of light is controlled according to the first retardation value, the second retardation value, and the third retardation value in the LCD.
    Type: Grant
    Filed: September 6, 2012
    Date of Patent: October 13, 2015
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Chihtsung Kang, Bo Hai
  • Patent number: 9134859
    Abstract: The present invention relates to a display device having a touch panel, and more particularly, to a touch panel display device which can improve visibility. The display device of the present invention includes: a display panel; a first film layer that is disposed on the display panel, and includes a first material, a first transparent layer having a first pattern disposed on the first material, and an index matching layer disposed between the first material and the first transparent layer; a second film layer that is disposed on the first film layer, and includes a second material, a second transparent layer having a second pattern disposed on the second material, and an index matching layer disposed between the second material and the second transparent layer; and a touch window disposed on the second film layer.
    Type: Grant
    Filed: May 16, 2011
    Date of Patent: September 15, 2015
    Assignee: LG Electronics Inc.
    Inventors: Seongman Jeon, Sangcheon Kim
  • Patent number: 9110304
    Abstract: An LCD device operably switchable between 2D and 3D display modes includes an active retardation panel having a plurality of retardation pixels arranged in at least M*N retardation pixel matrix with a first liquid crystal (LC) layer, and an LCD panel positioned having a plurality of display pixels arranged in at least M*N display pixel matrix with a second LC layer. Each retardation pixel has a first retardation A(i, j), and each display pixel has a second retardation B(i, j). The active retardation panel and LCD panel are arranged such that the retardation pixel matrix is positioned corresponding to the display pixel matrix, and an image displayed from each display pixel and passed through corresponding retardation pixel is simultaneously viewable by left and right eyes of a viewer and satisfies with: L(i,j)=f[A(i+1,j)+B(i,j)], and R(i,j)=f[A(i,j)+B(i,j)]. L(i, j) and R(i, j) are respectively left-eye and right-eye viewed gray levels of the image.
    Type: Grant
    Filed: October 23, 2012
    Date of Patent: August 18, 2015
    Assignee: AU OPTRONICS CORPORATION
    Inventor: Po-Jung Wu
  • Patent number: 9105224
    Abstract: A stereoscopic display device includes: a parallax barrier in which light transmission parts that transmit light and light shielding parts that block light are formed alternately, and a display panel that displays a stereoscopic image. A plurality of pixels for displaying the stereoscopic image are formed on the display panel. Each pixel includes a plurality of color forming subpixels that contribute to the color formation of the stereoscopic image, and a contrasting subpixel that contributes to the contrast of the stereoscopic image. In each pixel, the contrasting subpixel is positioned at both ends of the pixel in a direction in which the light transmission parts and the light shielding parts are arranged alternately. In each pixel that overlaps the light shielding part when the display panel is viewed from front, the contrasting subpixel is positioned at both ends of the light shielding part.
    Type: Grant
    Filed: November 17, 2011
    Date of Patent: August 11, 2015
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Makoto Eguchi, Shinya Yamasaki, Akira Imai, Tomoo Takatani
  • Patent number: 9104037
    Abstract: The present invention provides a circularly polarizing VA mode liquid crystal display device having an excellent gray scale viewing angle from an intermediate gray scale to a high gray scale at an azimuth angle of 45°.
    Type: Grant
    Filed: March 18, 2010
    Date of Patent: August 11, 2015
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Akira Sakai
  • Patent number: 9103988
    Abstract: Disclosed is a liquid-crystal display device wherein the total of Rthrear(?) and Rthfront(?) is within a range capable of compensating ?nd(?) in the black state; and the total scattering intensity of the front-side substrate satisfies the following formula (0); and the front-member scattering intensity, and the total scattering intensity of the rear-side substrate, and Rthfront(?) and Rthrear(?) satisfy following relationship (1) or (2): (0) The front-member scattering intensity? 1/38000, (1) The rear-member scattering intensity>The front-member scattering intensity, and Rthfront(?)>Rthrear(?), (2) The rear-member scattering intensity<The front-member scattering intensity, and Rthfront(?)<Rthrear(?).
    Type: Grant
    Filed: November 29, 2010
    Date of Patent: August 11, 2015
    Assignee: FUJIFILM CORPORATION
    Inventor: Makoto Ishiguro
  • Patent number: 9075201
    Abstract: A polarization conversion mechanism for a touch screen display includes a crystal layer and a polarizing layer. The crystal layer includes a birefringent crystal for changing phase delay effect in accordance with the orientation of the crystal axis thereof. The polarizing layer includes at least one linear polarizer such that an incident light after hitting a display module of the display device reflects and emits out through the linear polarizer and the crystal layer sequentially as reflection light in form of circularly polarized light or elliptically polarized light. The assembly of the crystal layer and the layer are installed to the display device and/or touch screen display in such a manner that the assembly is located on the display module thereof.
    Type: Grant
    Filed: March 15, 2013
    Date of Patent: July 7, 2015
    Assignee: TERA XTAL TECHNOLOGY CORPORATION
    Inventor: Jun-Wen Chung
  • Patent number: 9063294
    Abstract: A wavelength plate includes: a first quartz plate unit including a plurality of quartz plates which have main surfaces disposed in the same plane and are jointed with each other; and a second quartz plate unit including a plurality of quartz plates which have main surfaces disposed on a main surface of the first quartz plate unit and are jointed with each other in a position different from a joint position of the first quartz plate unit.
    Type: Grant
    Filed: January 23, 2012
    Date of Patent: June 23, 2015
    Assignee: SONY CORPORATION
    Inventors: Ryoko Horikoshi, Yuichi Takahashi, Koji Kita
  • Publication number: 20150146142
    Abstract: The present invention relates to liquid crystal display technology, and provides an optical compensation film for a liquid crystal display, including a first polarizer and a second polarizer disposed on both sides of the liquid crystal panel respectively, and an A-plate and a C-plate arranged between the liquid crystal panel and the first polarizer or between the liquid crystal panel and the second polarizer, wherein the in-plane compensation value for optical path difference of the A-plate RoA-plate lies in the range of [92, 184]nm, the compensation value for optical path difference in the thickness direction of the A-plate RthA-plate lies in the range of [46, 92]nm. The dark-state light leakage distribution and the contrast ratio of the display are improved through the optical compensation film according to the invention. The invention further provides a liquid crystal display including an optical compensation film.
    Type: Application
    Filed: January 21, 2014
    Publication date: May 28, 2015
    Inventors: Chih-Tsung Kang, Bo Hai
  • Patent number: 9040115
    Abstract: Disclosed is a negative C-type retardation compensator for a liquid crystal display. The negative C-type retardation compensator for the liquid crystal display includes polyarlate having a thio group or a sulfur oxide group in a polymer main chain thereof. Accordingly, the retardation compensator has an absolute value of negative retardation that is larger in a thickness direction that a retardation compensator which includes polyarylate having no thio group or sulfur oxide group in a polymer main chain thereof even though the retardation compensator having the thio group or sulfur oxide group and the retardation compensator having no thio group or sulfur oxide group are the same as each other in thickness. Thereby, the negative C-type retardation compensator for liquid crystal displays is capable of being desirably applied to the liquid crystal displays.
    Type: Grant
    Filed: May 21, 2013
    Date of Patent: May 26, 2015
    Assignees: LG Chem, Ltd., IUCF-HYU (Industry-University Cooperation Foundation Hanyang University
    Inventors: Hee-Jung Kim, Dong-Ryul Kim, Ho-Jun Lee, Sang-Uk Ryu, Hyo-Sun Lee, Boong-Goon Jeong, Dae-Woo Nam, Ju-Eun Cha
  • Patent number: 9019451
    Abstract: A liquid crystal display (LCD) device includes a birefringent layer that satisfies the relationship nx>ny?nz and may be considered a first-class birefringent layer, a birefringent layer that satisfies the relationship nx<ny?nz may be considered a second-class birefringent layer, and a birefringent layer that satisfies the relationship nx?ny?nz may be considered a third-class birefringent layer. The LCD may include a first polarizer, a first first-class birefringent layer whose in-plane phase difference is adjusted to a quarter wave, an LC cell, a second first-class birefringent layer whose Nz factor is substantially the same as the first first-class birefringent layer and whose in-plane phase difference is adjusted to a quarter wave, a second-class birefringent layer, and a second polarizer which may be stacked in this order.
    Type: Grant
    Filed: May 20, 2010
    Date of Patent: April 28, 2015
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Akira Sakai, Kazuyoshi Sakuragi, Masahiro Hasegawa
  • Patent number: 9019438
    Abstract: A 3D image display apparatus featuring a new polarization system is introduced which minimizes crosstalk between stereoimages. The polarization system includes a shutter panel that shifts the phase of an incident light, a polarizing film disposed between the shutter panel and an observer, a first retardation film disposed between the shutter panel and the polarizing film, a second retardation film disposed between the polarizing film and the first retardation film to correspond to the left eye of the observer, and a third retardation film disposed between the polarizing film and the first retardation film to correspond to the right eye of the observer.
    Type: Grant
    Filed: May 4, 2012
    Date of Patent: April 28, 2015
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sang-Gu Lee, Hee Wook Do, Tecksoo Kim, Seungbeom Park, DuckJong Suh, Min Oh Choi
  • Patent number: 9019452
    Abstract: The present invention discloses a compensation system and a liquid crystal display apparatus used for a liquid crystal panel. The compensation system comprises a first biaxial retardation film and a second biaxial retardation film respectively disposed on either side of the liquid crystal panel. An in-plane retardation value of the first biaxial retardation film at a wavelength of 550 nm is Ro1. An out-of-plane retardation value in a thickness direction is Rth1. An in-plane retardation value of the second biaxial retardation film at the wavelength of 550 nm is Ro2. An out-of-plane retardation value in a thickness direction is Rth2. Wherein: 30.8 nm?Ro1?91 nm; 70.4 nm?Rth1?208 nm; 21 nm?Ro2?93.8 nm; Y1?Rth2?Y2; Y1=0.00424817×Rth12?1.9854256×Rth1+277.7: Y2=?0.003333×Rth12?0.033459×Rth1+234.2. The present invention effectively reduces light leakage of the liquid crystal panel in dark mode by disposing the double-layered biaxial retardation films having reasonable retardation values.
    Type: Grant
    Filed: November 30, 2012
    Date of Patent: April 28, 2015
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd
    Inventors: Chih-tsung Kang, Bo Hai
  • Patent number: 8994912
    Abstract: A transparent display device includes a cholesteric liquid crystal display (LCD) panel to display an image, a first polarized sheet arranged on one side of the cholesteric LCD panel, and a first ¼ phase delay sheet arranged between the first polarized sheet and the display panel.
    Type: Grant
    Filed: January 9, 2013
    Date of Patent: March 31, 2015
    Inventors: Chiachiang Hsiao, Chihwen Chen
  • Patent number: 8970813
    Abstract: The present invention provides an optical compensation film group and a method for reducing light leakage of a vertical alignment LCD using the same. For the vertical alignment LCD at a wavelength of 550 nm, an LC?nd in the range of [305.8 nm, 324.3 nm], and a pretilt angle in the range of [85°, 90°), a compensation value Ro of an in-plane optical path difference of the biaxial compensation film is in the range of 48 nm?Ro?84 nm, and a compensation value Rth of an out-of-plane optical path difference of the biaxial compensation film is in the range of 160 nm?Rth?280 nm, and a TAC compensation film having a compensation value Rth is in the range of Y1?Rth?Y2. The present invention can effectively improve the serious light leakage caused by the conventional compensation structure with a single biaxial compensation film, the contrast and sharpness at the large viewing angles, and the costs.
    Type: Grant
    Filed: September 28, 2012
    Date of Patent: March 3, 2015
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventors: Chih-Tsung Kang, Bo Hai
  • Patent number: 8934074
    Abstract: There is provided an electrically controllable birefringence liquid crystal display (ECB-LCD) device, including: a liquid crystal panel including a first substrate, a second substrate, and a liquid crystal cell interposed between the first substrate and the second substrate and including a liquid crystal having positive dielectric anisotropy, the liquid crystal cell having a cell gap of 1 to 5 ?m and operating in an ECB mode; a first polarizer disposed on an upper portion of the first substrate and having a first absorption axis; a second polarizer disposed on a lower portion of the second substrate and having a second absorption axis; a first liquid crystal film interposed between the first substrate and the first polarizer; and a second liquid crystal film interposed between the second substrate and the second polarizer; wherein the first liquid crystal film includes a first base substrate; and a first liquid crystal layer formed on a surface of the first base substrate and including a nematic liquid crysta
    Type: Grant
    Filed: July 15, 2011
    Date of Patent: January 13, 2015
    Assignee: LG Chem, Ltd.
    Inventors: Byoung-Kun Jeon, Su-Young Ryu, Moon-Soo Park, Sang-Jun Yoon
  • Patent number: 8913216
    Abstract: Provided are diffuser, method of manufacturing same, and liquid crystal display device employing the diffuser. Liquid crystal display device includes: backlight unit; liquid crystal panel on which image is formed by using light emitted by backlight unit, and comprising: color filter comprising plurality of pixels each of which comprises plurality of subpixels that are alternately arranged and transmit light in different wavelength bands; and liquid crystal layer whose transmittance is adjusted under electrical control; and diffuser disposed on a top surface or a bottom surface of the liquid crystal panel and comprising diffusing areas and transparent areas which alternate with each other at intervals corresponding to the width of the subpixels, wherein the liquid crystal layer comprises liquid crystal areas corresponding to the diffusing areas and liquid crystal areas corresponding to the transparent areas and the transmittances of the liquid crystal areas are adjusted according to the subpixels.
    Type: Grant
    Filed: February 12, 2009
    Date of Patent: December 16, 2014
    Assignee: Samsung Display Co., Ltd.
    Inventors: Kyumin Choe, Seongmo Hwang, Moongyu Lee
  • Patent number: 8908132
    Abstract: Disclosed is a liquid crystal display device that includes: a blue phase mode liquid crystal layer between the first and second substrates, and has an optical anisotropy when an electric field is applied and not applied; polarizing plates on outer surfaces of first and second substrates, respectively; and one of a first optical compensation film including a +C plate, and a second optical compensation film including a biaxial phase retardation layer, between the polarizing plate and the liquid crystal panel.
    Type: Grant
    Filed: November 10, 2010
    Date of Patent: December 9, 2014
    Assignee: LG Display Co., Ltd.
    Inventor: Sang-Wook Lee