Electrical Excitation Of Liquid Crystal (i.e., Particular Voltage Pulses, Ac Vs. Dc, Threshold Voltages, Etc.) Patents (Class 349/33)
  • Patent number: 10502968
    Abstract: An image display apparatus includes a parallax-barrier shutter panel including a plurality of sub-pixels arranged widthwise, the sub-pixels each being changeable between a light transmittance state and a light block state by driving a liquid crystal layer held between a first transparent substrate and a second transparent substrate with a first transparent electrode extending lengthwise. The first transparent substrate includes in a display area, a lower-layer first transparent electrode disposed under an interlayer insulating film and an upper-layer first transparent electrode disposed on the interlayer insulating film, the lower-layer first transparent electrode and the upper-layer first transparent electrode being the first transparent electrode. The first transparent substrate includes in an area adjacent to the display area, a lower-layer metal wire disposed under the interlayer insulating film and an upper-layer metal wire disposed on the interlayer insulating film.
    Type: Grant
    Filed: June 7, 2018
    Date of Patent: December 10, 2019
    Assignee: Mitsubishi Electric Corporation
    Inventors: Shinji Kawabuchi, Osamu Miyakawa
  • Patent number: 10503033
    Abstract: A blue phase liquid crystal display panel and a liquid crystal display device are disclosed, including a first and a second substrates disposed at an interval and parallel. Blue phase liquid crystal is disposed between the first and second substrates. The first substrate includes a first base. The second substrate includes a second base. The blue phase liquid crystal display panel includes a transmissive display region having multiple first base platforms, multiple first electrodes, each of which is disposed on each of the first base platform, and second electrodes disposed on the first base and the second base. A reflective display region has fourth electrodes only disposed on the second base. The first substrate is provided with a reflective layer corresponding to the reflective display region. When light passes through the transmissive display region and the reflective display region, phase delays of the light in the two regions are identical.
    Type: Grant
    Filed: May 16, 2018
    Date of Patent: December 10, 2019
    Assignee: Wuhan China Star Optoelectronics Technology Co., Ltd
    Inventor: Yuejun Tang
  • Patent number: 10481395
    Abstract: A combined head up display and instrument cluster arrangement for a motor vehicle includes a substantially planar liquid crystal display having a first side and a second side opposite the first side. A first area of the liquid crystal display is viewable as an instrument cluster display by a human viewer who is disposed closer to the first side than to the second side. A backlight is disposed closer to the first side than to the second side. The backlight is aligned with a second area of the liquid crystal display such that a light field is emitted by the backlight through the second area. Head up display optics are positioned to receive the light field.
    Type: Grant
    Filed: July 18, 2017
    Date of Patent: November 19, 2019
    Assignee: Pananasonic Automotive Systems Company of America, Division of Panasonic Corporation of North America
    Inventor: Thomas Barron
  • Patent number: 10409111
    Abstract: The invention provides a liquid crystal display device, a liquid crystal display module and a liquid crystal cell thereof. The liquid crystal cell includes an upper substrate, a lower substrate, and a mixture of a quantum dot material and a liquid crystal material disposed between the upper substrate and the lower substrate. The quantum dot material includes a red quantum dot material and a green quantum dot material. A mass ratio of a total mixing amount of the two quantum dot materials occupied in a total mass of the mixture is 0.05˜5 wt %. As to the liquid crystal cell, the introduction of the QD material promotes the directional arrangement of liquid crystal molecules and thus plays a role of alignment; in another aspect, the liquid crystal cell being used in conjunction with a backlight source of blue or white LED can enhance the color gamut.
    Type: Grant
    Filed: May 20, 2016
    Date of Patent: September 10, 2019
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd
    Inventor: Dongze Li
  • Patent number: 10409099
    Abstract: A high screen ratio display device with fingerprint identification includes a lower substrate, an upper substrate, and a cover glass. The lower substrate has a thin film transistor array formed with a plurality of thin film transistors and corresponding capacitors to provide an active area. The upper substrate is disposed on one side of the TFT array, and has an optical film layer. The cover glass is disposed on one side of the upper substrate, and has an opening to accommodate a fingerprint identification module. The opening at least partially overlaps the active area, and a space is defined between the opening of the cover glass and the thin film transistor array to accommodate a portion of the fingerprint identification module.
    Type: Grant
    Filed: August 24, 2017
    Date of Patent: September 10, 2019
    Assignee: FOCALTECH ELECTRONICS, LTD.
    Inventor: Pei-Hung Hsiao
  • Patent number: 10381315
    Abstract: A hardware-embedded security system is described. The system includes connective components, circuit elements and an insulator. The connective components include a variable conductivity layer that is conductive for a first stoichiometry and insulating for a second stoichiometry. The variable conductivity layer is conductive for a first portion of the connective components connected to a first portion of the circuit elements. The variable conductivity layer is insulating for a second portion of the connective components connected to a second portion of the circuit elements. Thus, the first portion of the circuit elements are active and the second portion of the circuit elements are inactive. The insulator is adjacent to at least a portion of each of the connective components. The first stoichiometry may be indistinguishable from the second stoichiometry via optical imaging and electron imaging of a portion of the insulator and the variable conductivity layer.
    Type: Grant
    Filed: March 21, 2018
    Date of Patent: August 13, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Harsono S. Simka, Ganesh Hegde, Joon Goo Hong, Rwik Sengupta, Mark S. Rodder
  • Patent number: 10379402
    Abstract: This application provides a pixel structure of display array substrate and a display device applied thereto. The pixel structure of display array substrate includes a plurality of pixel units arranged in an array manner. Each pixel unit includes a first subpixel, a second subpixel, and a fourth subpixel. Each pixel unit further includes: a first subpixel electrode and a second subpixel electrode, respectively located in the first subpixel and the second subpixel; and a fourth subpixel electrode, where the fourth subpixel electrode includes a first pixel electrode, a second pixel electrode, a third pixel electrode, and a fourth pixel electrode located in four areas of the fourth subpixel, respectively, and each the first pixel electrode, the second pixel electrode, the third pixel electrode, and the fourth pixel electrode are divided into at least two compensation area.
    Type: Grant
    Filed: February 26, 2017
    Date of Patent: August 13, 2019
    Assignees: HKC CORPORATION LIMITED, CHONGQING HKC OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Yu-Jen Chen
  • Patent number: 10338441
    Abstract: According to one embodiment, a display device includes a first polarizing element, a second polarizing element, and a light-modulating layer located between the first polarizing element and the second polarizing element, each of the first polarizing element and the second polarizing element includes a guest-host liquid crystal layer and a control electrode in an active area including at least one sub-area, the guest-host liquid crystal layer including dye having anisotropy in absorptive power for visible light, the control electrode controlling an alignment direction of the dye in the sub-area.
    Type: Grant
    Filed: March 30, 2017
    Date of Patent: July 2, 2019
    Assignee: Japan Display Inc.
    Inventors: Kentaro Okuyama, Tae Kurokawa
  • Patent number: 10317746
    Abstract: A liquid crystal display device includes a pixel electrode having a stem electrode in a first direction and a plurality of branch electrode extending from the stem electrode. An angle between the stem electrode and each of the branch electrode increases as the branch electrodes approach a center of the stem electrode and the angle decreases as the branch electrodes approach an end of the stem electrode.
    Type: Grant
    Filed: April 10, 2017
    Date of Patent: June 11, 2019
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Israel Esteban Lazo, Heung Shik Park, Ki Chul Shin
  • Patent number: 10295871
    Abstract: A liquid crystal display panel and a liquid crystal display device are provided. The liquid crystal display panel comprises a first substrate, a second substrate, a liquid crystal layer sandwiched between the first and second substrate, and an auxiliary electrode. The first substrate includes a plurality of gate electrode lines and a plurality of data lines intersected to define a plurality of pixel units. Each pixel unit corresponds to a pixel electrode and a common electrode. In each region corresponding to one pixel unit, the pixel electrode and the common electrode are configured to form an electric field that drives the liquid crystal layer. A vertical projection of the auxiliary electrode on the first substrate covers an area where the electric field is formed by the pixel electrode and the common electrode, and a thickness of the liquid crystal layer is less than or equal to 3.2 ?m.
    Type: Grant
    Filed: January 24, 2017
    Date of Patent: May 21, 2019
    Assignees: Xiamen Tianma Micro-Electronics Co., Ltd., Tianma Micro-Electronics Co., Ltd.
    Inventors: Binbin Chen, Bozhi Liu, Bingping Liu
  • Patent number: 10274797
    Abstract: A method of fabricating a voltage-tunable liquid crystal-based notch filter requires filling at least two LC cells with cholesteric LC material to create LH and RH LC cells while applying heat to the cell substrates such that their temperatures are raised to near, but below, the clearing point, such that the LC material remains in the cholesteric state. An AC voltage is applied and turned off repeatedly while the LC cells cool down to room temperature, to cause the LC molecules to temporarily deviate from their intrinsic helical alignment. The cells are passed under a UV light sufficient to create cross-linked polymer networks, and self-compensation is used to compensate for in-band retardation. The resulting LH and RH LC cells are stacked such that the electrodes on adjacent substrates are connected to form a common electrode.
    Type: Grant
    Filed: December 4, 2017
    Date of Patent: April 30, 2019
    Assignee: Teledyne Scientific & Imaging, LLC
    Inventor: Dong-Feng Gu
  • Patent number: 10210784
    Abstract: A driving circuit and a method for driving a display panel are proposed. The driving circuit includes: a clock controller; a scan signal driver for generating a first scan signal and a second scan signal; a data signal driver for receiving a source data signal, and generating a first data signal, and generating a second data signal based on the first data signal. A gray level value corresponding to the first data signal is different from a gray level value corresponding to the second data signal. The present invention is able to reduce color shift.
    Type: Grant
    Filed: August 6, 2015
    Date of Patent: February 19, 2019
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Yuchao Zeng, Taijiun Hwang
  • Patent number: 10191310
    Abstract: A power conversion circuit for switching the viewing angle of an LCD, includes an input terminal, an output terminal, a switching unit, an isolating unit, an output unit, a first power supply, a second power supply, and a third power supply. When the input terminal is provided with a low level voltage, the switching unit is switched on, the voltage of the second power supply is provided as a first DC voltage to the output terminal via the switching unit and the isolating unit. When the input terminal is provided with a high level voltage, the switching unit is switched off, the voltage of the third power supply is provided as a second DC voltage to the output terminal via the output unit and the isolating unit, wherein the second DC voltage is higher than the first DC voltage.
    Type: Grant
    Filed: October 15, 2016
    Date of Patent: January 29, 2019
    Assignee: INFOVISION OPTOELECTRONICS (KUNSHAN) CO., LTD.
    Inventors: Dalei Zhang, Yongxin Ruan, Qingbai Lv
  • Patent number: 10157565
    Abstract: A display substrate and a display device including the display substrate are disclosed. In one aspect, the display substrate includes a plurality of pixels formed in a substantially circular pixel area and a driving circuit formed in a peripheral area surrounding the pixel area and configured to drive the pixels. A boundary is formed between the pixel area and the peripheral area, and the boundary is substantially concentric with respect to an arc defining the substantially circular pixel area. The driving circuit comprises a conductive pattern having a first side which extends in a peripheral direction crossing the boundary.
    Type: Grant
    Filed: July 23, 2015
    Date of Patent: December 18, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hye-Jin Shin, Won-Kyu Kwak, Kwang-Min Kim
  • Patent number: 10152913
    Abstract: An anti-interference display panel includes a source driving chip, a switching signal line, a multiplexer, and an anti-interference signal line. The source driving chip is configured to generate a data signal. The switching signal line is configured to transmit a switching signal. The multiplexer is configured to receive the data signal and the switching signal, and is configured to output the data signal according to the switching signal. The anti-interference signal line is configured to transmit an anti-interference signal. An equivalent resistor and an equivalent capacitor are formed on the anti-interference signal line, and resistance of the equivalent resistor is approximate to resistance of a load resistor coupled to the switching signal line, and capacitance of the equivalent capacitor is approximate to capacitance of a load capacitor coupled to the switching signal line.
    Type: Grant
    Filed: December 4, 2017
    Date of Patent: December 11, 2018
    Assignee: AU OPTRONICS CORPORATION
    Inventors: Yi-Cheng Lin, Ming-Hsien Lee, Kai-Wei Hong, Chun-Da Tu, Chuang-Cheng Yang, Chun-Feng Lin
  • Patent number: 10136570
    Abstract: An array substrate includes a driver, a glass substrate having a driver mounting section where the driver is mounted, an anisotropic conductive material that is interposed between the driver and driver mounting section so as to electrically connect both and that at least includes a binder made of a thermosetting resin and conductive particles in the binder, and a heat supply part provided on at least the driver mounting section of the glass substrate for supplying heat to the anisotropic conductive material.
    Type: Grant
    Filed: May 22, 2015
    Date of Patent: November 20, 2018
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Katsuhiro Yamaguchi, Nobuhiro Nakata, Yukinori Masuda, Tomoki Takahara
  • Patent number: 10126601
    Abstract: A liquid crystal display device includes a substrate; a liquid crystal layer containing a liquid crystal material; and a first layer formed on the substrate, the first layer being configured to control the alignment of liquid crystal molecules, the first layer being placed between the substrate and the liquid crystal layer, and being formed by polymerization of two or more kinds of radical polymerizable monomers in the liquid crystal layer.
    Type: Grant
    Filed: April 24, 2013
    Date of Patent: November 13, 2018
    Assignees: SHARP KABUSHIKI KAISHA, TOYO GOSEI CO., LTD.
    Inventors: Masanobu Mizusaki, Satoshi Enomoto
  • Patent number: 10082702
    Abstract: A liquid-crystal display apparatus includes a plurality of rectangular pixels. Each pixel includes a first electrode and a second electrode. A slit region and a concave and convex portion are formed in the first electrode. It further includes a control circuit. The plurality of pixels are constituted of a first pixel group and a second pixel group. First data lines and for applying a voltage on the first electrode are provided closer to the first substrate than the first electrode. In each pixel that constitutes the first pixel group, a second data line extension extending from a second data line is provided adjacent to a first data line. In each pixel that constitutes the second pixel group, a first data line extension extending from the first data line is provided adjacent to the second data line.
    Type: Grant
    Filed: August 7, 2015
    Date of Patent: September 25, 2018
    Assignee: Sony Corporation
    Inventors: Chikashi Kobayashi, Shunichi Suwa, Masashi Miyakawa, Yoji Nagase, Sumito Shiina, Seiji Shibahara, Hiroki Takahashi, Hiromasa Mitani, Kunihiko Nagamine, Koji Hidaka, Masahiko Mizuki
  • Patent number: 10067397
    Abstract: A first substrate (10) in a liquid crystal display device (100) includes a first electrode (11) provided in each pixel and a second electrode (12) generating a lateral electric field in a liquid crystal layer (30) together with the first electrode. A second substrate (20) includes a third electrode (21) generating a vertical electric field in the liquid crystal layer together with the first electrode and the second electrode. Each pixel exhibits, in a switched manner, a black display state where black display is provided in a state where the vertical electric field is generated in the liquid crystal layer, a white display state where white display is provided in a state where the lateral electric field is generated in the liquid crystal layer, and a transparent display state where a rear side of a liquid crystal display panel (1) is seen through in a state where no voltage is applied to the liquid crystal layer.
    Type: Grant
    Filed: August 21, 2015
    Date of Patent: September 4, 2018
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Takahiro Sasaki, Iori Aoyama, Yuichi Kita, Kazutaka Hanaoka
  • Patent number: 10037984
    Abstract: A display device including: a substrate including a display area and a non-display area; a first pad terminal and a second pad terminal disposed in the non-display area, the first pad terminal arranged along a first row and the second pad terminal arranged along a second row; a first connection unit connected to the first pad terminal; a first driving integrated circuit connected to the first connection unit; a second connection unit connected to the second pad terminal; and a second driving integrated circuit connected to the second connection unit, wherein first connection unit is disposed overlapping the second connection unit.
    Type: Grant
    Filed: May 11, 2017
    Date of Patent: July 31, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventor: Myongsoo Oh
  • Patent number: 10020199
    Abstract: Initial film layers prepared from tin(II) chloride spontaneously generate open cavities when the initial film layers are thermally cured to about 400° C. using a temperature ramp of 1° C./minute to 10° C./minute while exposed to air. The openings of the bowl-shaped cavities have characteristic dimensions whose lengths are in a range of 30 nm to 300 nm in the plane of the top surfaces of the cured film layers. The cured film layers comprise tin oxide and have utility in gas sensors, electrodes, photocells, and solar cells.
    Type: Grant
    Filed: May 15, 2017
    Date of Patent: July 10, 2018
    Assignee: International Business Machines Corporation
    Inventors: Amy N. Bowers, Luisa D. Bozano, Andrea Fasoli, Krystelle Lionti, Elizabeth M. Lofano, Robert D. Miller, Linda K. Sundberg
  • Patent number: 10001667
    Abstract: Disclosed is a display apparatus a display of which includes a liquid crystal panel; a light source configured to emit light toward the liquid crystal panel; a first polarization layer disposed on a first surface of the liquid crystal panel and configured to transmit a first polarized component of the light emitted from the light source; a second polarization layer disposed on a second surface of the liquid crystal panel opposed to the first surface and configured to transmit a second polarized component of light emitted from the liquid crystal panel; and a color filter disposed on a surface of the second polarization layer from which the second polarized component exits, the color filter comprising a quantum dot layer configured to filter light having preset colors out of the second polarized component exiting the second polarization layer.
    Type: Grant
    Filed: April 29, 2016
    Date of Patent: June 19, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jinhyun Cho, Jonghee Han
  • Patent number: 9989678
    Abstract: In an anisotropic optical film including two or more anisotropic light diffusion layers where a linear transmittance varies depending on an incident light angle, each of the anisotropic light diffusion layers has a matrix region and a plurality of pillar regions that differ in refractive index from the matrix region, at least two types of anisotropic light diffusion layers (a) and (b) that differ in aspect ratio between a short diameter and a long diameter at a cross section perpendicular to an orientation direction of the pillar regions are used as the anisotropic light diffusion layers, the aspect ratio between the short diameter and the long diameter in the pillar regions is made less than 2 in the anisotropic light diffusion layer (a), and the aspect ratio between the short diameter and the long diameter in the pillar regions is made 2 or more and 20 or less in the anisotropic light diffusion layer (b).
    Type: Grant
    Filed: March 17, 2015
    Date of Patent: June 5, 2018
    Assignee: Tomoegawa Co., Ltd.
    Inventors: Tsubasa Sakano, Masahide Sugiyama
  • Patent number: 9938229
    Abstract: The present invention relates to polymerizable compounds, to processes and intermediates for the preparation thereof, to liquid-crystal (LC) media comprising them, and to the use of the polymerizable compounds and LC media for optical, electro-optical and electronic purposes, in particular in LC displays, especially in LC displays of the polymer sustained alignment type.
    Type: Grant
    Filed: July 29, 2015
    Date of Patent: April 10, 2018
    Assignee: MERCK PATENT GMBH
    Inventors: Eveline Baron, Julian Vogt, Qiong Tong, Constanze Brocke, Helga Haas, Alexander Hahn
  • Patent number: 9927666
    Abstract: A representative LCD system includes: liquid crystal material disposed between first and second substrates; protrusions supported by the first substrate and arranged in an array, each of the protrusions extending from a base; first pixel electrodes, with a corresponding one of the first pixel electrodes being positioned adjacent the base of a corresponding one of the protrusions; first common electrodes, with a corresponding one of the first common electrodes being positioned adjacent the base of a corresponding one of the protrusions such that each of the protrusions is positioned between one of the first pixel electrodes and one of the first common electrodes; second pixel electrodes, with a corresponding one of the second pixel electrodes being positioned on a corresponding one of the protrusions; and second common electrodes, with a corresponding one of the second common electrodes being positioned on a corresponding one of the protrusions.
    Type: Grant
    Filed: April 20, 2016
    Date of Patent: March 27, 2018
    Assignees: a.u. Vista Inc., The University of Central Florida Research Foundation, Inc.
    Inventors: Yi-Fen Lan, Daming Xu, Cheng-Yeh Tsai, Norio Sugiura, Shin-Tson Wu
  • Patent number: 9929183
    Abstract: Embodiments of the present invention disclose an array substrate, a manufacturing method of the array substrate and a display device, and the manufacturing method of the array substrate comprises: forming a gate line and a gate electrode on a base substrate; forming a gate insulating layer above the gate line and the gate electrode; successively depositing a semiconductor layer and a metal layer above the gate insulating layer, and forming an active layer, a source electrode and a drain electrode that are disposed above the gate electrode and a residual semiconductor layer disposed above the gate line and a signal line covering the residual semiconductor layer by using one patterning process; performing a patterning process for the signal line, the residual semiconductor layer disposed below the signal line and the gate insulating layer to form a via hole, so that a surface of the gate line, side sectional surfaces of the signal line, side sectional surfaces of the residual semiconductor layer and side sectio
    Type: Grant
    Filed: June 9, 2013
    Date of Patent: March 27, 2018
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Jian Guo
  • Patent number: 9865552
    Abstract: A water level package includes a substrate, a plurality of semiconductor chips mounted on the substrate, and molding members that contact the substrate and the plurality of semiconductor chips and are formed on the substrate. The molding members include two or more molding members that have coefficients of thermal expansion (CTEs) different from each other.
    Type: Grant
    Filed: January 21, 2016
    Date of Patent: January 9, 2018
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Han-Sung Ryu, Kyong-soon Cho
  • Patent number: 9857634
    Abstract: A liquid crystal display includes a first substrate, a thin film transistor positioned on the first substrate, a first electrode connected to the thin film transistor, a second substrate facing the first substrate, a first alignment layer positioned on the first electrode and a second alignment layer positioned on the second substrate, and a liquid crystal layer positioned between the first substrate and the second substrate and including a liquid crystal molecule. At least one of the first alignment layer and the second alignment layer includes a copolymer of cyclobutanedianhydride (CBDA), a diamine, and a compound represented by Chemical Formula 2. In which X of Chemical Formula 2 represents —(CH2)m-O—(CH2)n—, and a sum of m and n is an odd number.
    Type: Grant
    Filed: September 9, 2014
    Date of Patent: January 2, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Bong Sung Seo, Suk Hoon Kang, Baek Kyun Jeon
  • Patent number: 9835891
    Abstract: The present invention proposes an LCD panel and a method for forming the same. The LCD panel includes an isolator disposed between two adjacent liquid crystal units. Liquid crystal molecules of red liquid crystal units and green liquid crystal units are mixed with quantum rods (QRs) of corresponding colors. The red liquid crystal units correspond to a position of the red pixels, the green liquid crystal units correspond to a position of the green pixels. The QRs and liquid crystal molecules have long axes and directions of the long axes of QRs and liquid crystal molecules are the same.
    Type: Grant
    Filed: October 15, 2015
    Date of Patent: December 5, 2017
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Guohe Liu
  • Patent number: 9835923
    Abstract: A bistable liquid crystal spatial light modulating (SLM) device (SLM) device utilizes the homeotropic and bubble domain texture change of a cholesteric liquid crystal that is responsive to external stimuli, such as electric voltage, light and pressure. The SLM device is configured to be switched between the two stable textures of the bubble domain texture or the fingerprint texture. In addition, the SLM device may be switched between transparent and light-scattering states by the application of an electric field, light irradiation or physical/mechanical pressure. The light transmission state and the light-scattering states of the present invention are also stable in time at zero voltage, and are reversible upon the application of an external field at a different voltage, frequency or wavelength of light.
    Type: Grant
    Filed: July 21, 2015
    Date of Patent: December 5, 2017
    Assignee: Kent State University
    Inventors: Liang-Chy Chien, Andrii Varanytsia
  • Patent number: 9798402
    Abstract: A touch control display screen includes: a touch control electrode layer including a plurality of touch control electrodes; a first electrode layer opposite to the touch control electrode layer and including a plurality of first electrodes; a liquid crystal layer between the touch control electrode layer and the first electrode layer; a switch control circuit connected with at least one touch control electrode; a display control circuit connected with the first electrodes; and a synchronization control circuit connected with the switch control circuit. In the display stage, the display control circuit outputs a first common voltage, and the synchronization control circuit controls the switch control circuit to output a second common voltage equal to the first common voltage. Many advantages are provided, such as a uniform display effect, fewer residual ions, better display quality, higher reliability, simplified circuit, lower cost, and increased light transmittance.
    Type: Grant
    Filed: April 20, 2015
    Date of Patent: October 24, 2017
    Assignees: SHANGHAI TIANMA MICRO-ELECTRONICS CO., LTD., TIANMA MICRO-ELECTRONICS CO., LTD.
    Inventors: Xingyao Zhou, Fei Li, Yong Yuan
  • Patent number: 9791746
    Abstract: The present invention provides a liquid crystal display panel. The liquid crystal display panel includes a TFT substrate and a CF substrate that are respectively provided with first and second alignment films that allow for vertical light alignment, so that after irradiation of ultraviolet light, the first alignment film and the second alignment film have alignment directions that are substantially parallel but opposite to each other and the liquid crystal molecules are set at a tilt angle for being nearly vertically aligned.
    Type: Grant
    Filed: October 28, 2015
    Date of Patent: October 17, 2017
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Yanjun Song, Chungching Hsieh, Yongchao Zhao, Xiang Li
  • Patent number: 9791749
    Abstract: A display device including: a substrate including a display area in which pixels are positioned and a peripheral area around the display area; a common electrode and a pixel electrode that are positioned on the display area and overlapping with each other, with a first insulating layer disposed therebetween; a common voltage line positioned on or below the common electrode and contacting the common electrode; an edge common voltage line connected with the common voltage line and formed along an edge of the display area; and a first common voltage transfer line contacting the edge common voltage line in the peripheral area and configured to transfer a common voltage to the common voltage line.
    Type: Grant
    Filed: November 21, 2016
    Date of Patent: October 17, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hyung Sup Byeon, Sung Hoon Kim, Ji-Won Sohn
  • Patent number: 9785028
    Abstract: To display an image and the back side image in an overlapped state on a screen, with good visibility and see-through capability. The screen scanned with an image light from the projector has an optical layer and a plurality of control electrodes which are arranged side by side along the optical layer. The synchronous controller applies a voltage to the plurality of control electrodes, and, in a scanning period T of the image light, switches the optical state of the screen by the unit of the segmented region, between the visual state and the nonvisual state. The synchronous controller, in the period T, switches the optical state of a plurality of segmented regions 22 in synchronous with the scanning period of the image light, maintains the optical state of a projected region of the screen in the visual state by a voltage with two or more amplitudes.
    Type: Grant
    Filed: August 20, 2015
    Date of Patent: October 10, 2017
    Assignee: PIONEER CORPORATION
    Inventor: Toshihiro Yoshioka
  • Patent number: 9753592
    Abstract: An electrostatic capacitive sensor includes a plurality of transmitter electrodes, a plurality of receiver electrodes, and a control circuit. The control circuit includes: a transmitter circuit configured to apply a periodical transmission signal to each of the plurality of transmitter electrodes; and a receiver circuit configured to generate, based on a reception signal generated in each of the plurality of receiver electrodes in response to the transmission signal, a detection signal indicating a change in electrostatic capacitance formed at each of intersections of the plurality of transmitter electrodes and the plurality of receiver electrodes, wherein the transmitter circuit and the receiver circuit are configured to switch between a first mode and a second mode, in the first mode, the transmission/reception signal is sequentially applied/monitored and in the second mode, the plurality of transmitter/receiver electrodes are grouped so that the same signal is applied to the same group.
    Type: Grant
    Filed: June 11, 2015
    Date of Patent: September 5, 2017
    Assignee: ROHM CO., LTD.
    Inventors: Yuki Oishi, Yo Yamashiro
  • Patent number: 9746726
    Abstract: The present invention discloses a liquid crystal display, a method improving the response time thereof, and an array substrate. The array substrate comprises a substrate and multiple pixel units provided in the array on the substrate. Each said pixel unit comprises a first pixel electrode and a second pixel electrode that are used to generate a first electric field to control liquid crystal molecules deflected from an initial direction to a predetermined angle spaced from each other provided along a first direction, and a third pixel electrode and a fourth pixel electrode that are used to generate a second electric field to control liquid crystal molecules deflected from the predetermined angle to the initial direction spaced from each other provided along a second direction. Compared with the prior art, the present invention can improve the response time of the liquid crystal display, thereby improving the display quality.
    Type: Grant
    Filed: January 19, 2016
    Date of Patent: August 29, 2017
    Assignee: Wuhan China Star Optoelectronics Technology Co., Ltd
    Inventor: Chang Xie
  • Patent number: 9726941
    Abstract: A pixel unit, including: a pixel electrode, a gate electrode, a gate electrode line connected with the gate electrode, a source electrode, a data line connected with the source electrode, a second electrode disposed in a same layer as the pixel electrode, a first drain electrode connected with the pixel electrode, and a second drain electrode connected with the second electrode; the first drain electrode and the second drain electrode and the source electrode are provided with a channel therebetween, and the first drain electrode and the second drain electrode do not contact each other; along a direction of the data line, the edge of the second electrode is parallel with the edge of the pixel electrode and the two do not contact. An array substrate, a pixel driving method and a display device are further disclosed for overcoming the phenomenon of light leakage of the edge of the pixel unit caused by reduction of the width of the black matrix.
    Type: Grant
    Filed: August 2, 2013
    Date of Patent: August 8, 2017
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Zhenwei Wang, Yao Yu, Lei Tang, Xin Li, Jian Ren, Jing Wang, Ying Zhang, Yang Pei
  • Patent number: 9728146
    Abstract: According to an aspect, a liquid-crystal display device includes: a liquid crystal layer including a pixel; a driving circuit unit for applying a driving voltage to the pixel; a status detection unit that detects a response speed of the liquid crystal layer; and a control unit that controls a gradation of the pixel by controlling the driving voltage. The control unit switches between a first mode and a second mode based on a detection result from the status detection unit. In the first mode, the control unit uses each of a predetermined number of voltage values from a minimum voltage value to a maximum voltage as a voltage value of the driving voltage corresponding to a gradation value. In the second mode, the control unit uses part of the predetermined number of voltage values as a voltage value of the driving voltage for overdrive.
    Type: Grant
    Filed: March 19, 2014
    Date of Patent: August 8, 2017
    Assignee: Japan Display Inc.
    Inventor: Toshiharu Matsushima
  • Patent number: 9709637
    Abstract: A light emitting element circuit includes a light emitting element (1), a current supply path to the light emitting element (1), a constant current circuit (2) that supplies a current to the light emitting element (1) via the current supply path, and an electric discharge path that discharges an electric charge accumulated at the light emitting element (1) and at a region connected between the both electrodes when the constant current circuit (2) stops a current supply to the light emitting element (1). A light emitting element failure detector (4) that detects a short-circuit of the light emitting element (1) in a light emitting element circuit includes a current instantaneous interruption circuit (5), a voltage detector (60), and a determiner (62).
    Type: Grant
    Filed: June 28, 2012
    Date of Patent: July 18, 2017
    Assignee: NEC Lighting, Ltd.
    Inventor: Toshiya Iwakiri
  • Patent number: 9691798
    Abstract: A display device includes: an insulating layer positioned on a first insulating substrate; a pixel electrode including a first subregion electrode applied with a first voltage and positioned beneath the insulating layer, a first subpixel electrode which includes a second subregion electrode positioned on the insulating layer, and a second subpixel electrode which is positioned on the insulating layer and applied with a second voltage; a second insulating substrate facing the first insulating substrate; and a common electrode positioned under the second insulating substrate and applied with a common voltage, wherein one pixel area is divided into a first part in which the second subregion electrode is positioned, a second part in which the first subregion electrode and a portion of the second subpixel electrode overlap each other, and a third part which does not overlap the first subregion electrode in the second subpixel electrode.
    Type: Grant
    Filed: February 26, 2016
    Date of Patent: June 27, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: In-Jae Hwang, Mee Hye Jung, Jang Mi Kang, Il Gon Kim
  • Patent number: 9677929
    Abstract: An aperture adjusting apparatus is provided. The aperture adjusting apparatus includes: a variable part of which an aperture size varies; an optical sensor configured to sense light incident to the variable device part and light output from the variable device part; an aperture calculator configured to calculate a size of an aperture formed in the variable part from light intensity sensed by the optical sensor; and a driving controller configured to control driving of the variable device part by receiving a calculation result fed back from the aperture calculator.
    Type: Grant
    Filed: January 7, 2014
    Date of Patent: June 13, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Eun-sung Lee, Seung-wan Lee, Jong-hyeon Chang, Kyu-dong Jung, Min-seog Choi
  • Patent number: 9664962
    Abstract: A pixel electrode formed into a slit structure with striped electrodes opposed to each other for a zero rubbing angle can provide fast response since rotational directions of the liquid crystals become opposite at both sides of the slit in the striped electrodes. The electrode structure, however, poses a problem of low transmittance. Provided is a liquid crystal display device of IPS-Pro scheme including a pixel electrode with one pair of striped electrodes. The first striped electrode includes a short electrode section and long electrode sections, and the second striped electrode also includes a short electrode section and long electrode sections. The long electrode sections of the first striped electrode are disposed adjacently to those of the second striped electrode. Liquid crystals are aligned in a lengthwise direction of the striped electrodes.
    Type: Grant
    Filed: November 4, 2015
    Date of Patent: May 30, 2017
    Assignee: Japan Display Inc.
    Inventors: Mika Oiwa, Shinichiro Oka, Toshiharu Matsushima
  • Patent number: 9658369
    Abstract: Provided is a geometric transformation lens which can transform a target image geometrically as desired, achieving downsizing and reducing energy consumption. Even if another target to be observed more in detail is inside the field of view, the geometric transformation lenses (20a, 20b, 20c and 20d) can magnify optically the desired region within the target projection image by supplying the magnification instruction voltage (V2,mn) to the corresponding magnifying/demagnifying electrodes (EL2,mn) simply without moving the lens itself using heavy mechanical parts motorized. This can achieve downsizing because a space for setting the existing mechanical part to control the direction of the lens and its motion can be disregarded. This also can achieve reducing energy consumption because no space is needed to move the lenses with the heavy mechanical parts.
    Type: Grant
    Filed: May 11, 2012
    Date of Patent: May 23, 2017
    Inventors: Sota Shimizu, Susumu Sato
  • Patent number: 9645623
    Abstract: A semiconductor integrated circuit includes a digital circuit configured to receive a first power supply to operate in synchronization with a clock signal, and an electric-charge supplying circuit configured to supply electric charge from a second power supply to the digital circuit in synchronization with the clock signal.
    Type: Grant
    Filed: April 2, 2014
    Date of Patent: May 9, 2017
    Assignee: FUJITSU LIMITED
    Inventor: Satoshi Matsubara
  • Patent number: 9632368
    Abstract: The present invention provides a liquid crystal display pixel structure and a manufacture method thereof. The liquid crystal display pixel structure comprises: a lower substrate, a passivation layer located on an upper surface of the lower substrate, a pixel electrode located on the passivation layer, an upper substrate, and a common electrode located on a lower surface of the upper substrate; each pixel comprises multi domains; in one pixel, the passivation layer comprises at least two trench structures having different depths, and the pixel electrode uninterruptedly covers on the trench structures, the trench structures having different depths divide the one pixel into different areas to realize that liquid crystals in different areas of the one pixel have different twisted angles under the same driving voltage.
    Type: Grant
    Filed: February 6, 2015
    Date of Patent: April 25, 2017
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd
    Inventors: Feng Zhao, Chungyi Chiu
  • Patent number: 9618903
    Abstract: Disclosed are a holographic image display device and a method for driving the same which may stabilize luminance of a holographic image and reduce flicker. The holographic image display device includes a laser backlight unit, a surface light converter converting laser light emitted from the laser backlight unit into surface light-type laser light and emitting the surface light-type laser light, a spatial light modulator (SLM) implementing an input holographic interference pattern and projecting a holographic image at a viewing point using the surface light-type laser light, and an optical switching unit located between the laser backlight unit and the SLM and controlling polarization of the laser light. The optical switching unit blocks laser light emitted to the SLM in a blocking mode, and transmits the laser light emitted to the SLM in a transmission mode.
    Type: Grant
    Filed: December 17, 2013
    Date of Patent: April 11, 2017
    Assignee: LG Display Co., Ltd.
    Inventors: Dong-Jun Choi, Ju-Seong Park, Woo-Young Choe
  • Patent number: 9612431
    Abstract: An electrowetting display includes first and second substrates facing each other, an electrowetting layer, a first electrode, a second electrode, and a hydrophobic barrier layer. The electrowetting layer is disposed between the first substrate and the second substrate and includes a first fluid and a second fluid, and the first fluid has an electrical conductivity or a polarity. The first electrode is disposed on the first substrate, and the second electrode forms an electric field in cooperation with the first electrode to control a position of the first fluid. The hydrophobic barrier layer is disposed between the first substrate and the electrowetting layer to cover the first electrode and includes a first surface making contact with the first electrode and a second surface having a hydrophobicity stronger than a hydrophobicity of the first surface and making contact with the electrowetting layer.
    Type: Grant
    Filed: November 20, 2014
    Date of Patent: April 4, 2017
    Assignee: Amazon Technologies, Inc.
    Inventors: SungHoon Yang, Woo Yong Sung
  • Patent number: 9601054
    Abstract: There is provided a display device including a pixel array unit in which a plurality of pixels are arrayed in a matrix shape. A predetermined amount of light emission variation is added to a light emission state of each pixel and a cycle of the light emission state of the pixel array unit in the case of the addition is shorter than the cycle of a light emission state of the pixel array unit before the predetermined amount of light emission variation is added.
    Type: Grant
    Filed: May 8, 2013
    Date of Patent: March 21, 2017
    Assignee: JOLED INC.
    Inventor: Tsutomu Shimayama
  • Patent number: 9557570
    Abstract: A display device includes a display panel and a liquid crystal lens panel. The liquid crystal lens panel includes a first substrate and a second substrate that face each other; a first electrode layer disposed on the first substrate; a second electrode layer disposed on the second substrate; and a liquid crystal layer interposed between the first substrate and the second substrate. The first electrode layer includes a plurality of first linear electrodes and a plurality of second linear electrodes, the liquid crystal layer includes first liquid crystal molecules adjacent to the first linear electrode that are pre-tilted in a first direction, and second liquid crystal molecules adjacent to the second linear electrodes that are pre-tilted in a second direction opposite the first direction.
    Type: Grant
    Filed: April 15, 2014
    Date of Patent: January 31, 2017
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Seung Jun Jeong, Kyung Ho Jung
  • Patent number: 9557571
    Abstract: According to an embodiment, a liquid crystal lens device includes an optical element and a voltage controller. The optical element includes: a refractive index modulation layer of which a refractive index distribution changes according to a voltage applied thereto; and electrodes to apply a voltage to the refractive index modulation layer. In a first voltage state, the voltage controller controls voltages applied to the electrodes such that a first refractive index distribution is arranged periodically in the optical element. In a second voltage state, the voltage controller controls voltages applied to the electrodes such that a second refractive index distribution is achieved. In an intermediate voltage state, the voltage controller controls a voltage applied to a first-type electrode, to which a first voltage that is the maximum value among the voltages applied to the electrodes in the first voltage state is applied, to a second voltage lower than the first voltage.
    Type: Grant
    Filed: June 5, 2014
    Date of Patent: January 31, 2017
    Assignee: Kabushiki Kaisha Toshiba
    Inventors: Masako Kashiwagi, Shinichi Uehara, Ayako Takagi