Electrical Excitation Of Liquid Crystal (i.e., Particular Voltage Pulses, Ac Vs. Dc, Threshold Voltages, Etc.) Patents (Class 349/33)
  • Patent number: 11307446
    Abstract: A display device is disclosed that has a touch sensor, which includes a display panel, an integrated driving circuit, a common voltage ring line, and a common voltage feedback line. The integrated driving circuit outputs a touch driving signal and a display common voltage for respectively driving a touchscreen and the display panel. The integrated driving circuit outputs the display common voltage through a common voltage ring pad in a period in which the display panel is driven and outputs a load-free common voltage having a form different from that of the display common voltage through the common voltage ring pad in a period in which the touchscreen is driven.
    Type: Grant
    Filed: July 14, 2020
    Date of Patent: April 19, 2022
    Assignee: LG Display Co., Ltd.
    Inventor: Seung-Kuk Ahn
  • Patent number: 11300756
    Abstract: A method is provided for adjusting a loupe including an eyepiece and a tube framework having a first optical system adjacent to an object and a second optical system adjacent to the eyepiece. At least two zoom lenses in the first optical system shift along an optical axis between a first and a second position to change magnification. The method includes shifting at least one lens in the first optical system such that a distance at which the object is focused when the zoom lenses are shifted to the first position is substantially equal to a distance at which the object is focused when the zoom lenses are shifted to the second position; and then shifting at least one lens in the second optical system along the optical axis such that the object is focused when the zoom lenses are shifted to the first position or the second position.
    Type: Grant
    Filed: October 20, 2017
    Date of Patent: April 12, 2022
    Assignee: Konica Minolta, Inc.
    Inventor: Isao Ishimoda
  • Patent number: 11276359
    Abstract: A display panel for displaying an image is provided with a plurality of pixels arranged in a matrix. Each pixel includes one or more units each including a plurality of subunits. Each subunit includes a transistor in which an oxide semiconductor layer which is provided so as to overlap a gate electrode with a gate insulating layer interposed therebetween, a pixel electrode which drives liquid crystal connected to a source or a drain of the transistor, a counter electrode which is provided so as to face the pixel electrode, and a liquid crystal layer provided between the pixel electrode and the counter electrode. In the display panel, a transistor whose off current is lower than 10 zA/?m at room temperature per micrometer of the channel width and off current of the transistor at 85° C. can be lower than 100 zA/?m per micrometer in the channel width.
    Type: Grant
    Filed: October 29, 2019
    Date of Patent: March 15, 2022
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Shunpei Yamazaki
  • Patent number: 11271051
    Abstract: A light source panel and a display device are disclosed. The display device includes: a display panel of reflection type and a light source panel disposed on a light emitting side of the display panel, the light source panel includes a parallax barrier structure and light emitting units, the parallax barrier structure includes light splitting components, the light splitting components include at least a non-transparent state, the light transmission areas are located in spaces between adjacent splitting light components, and the light emitting units at least partially overlap with the light splitting components in a direction perpendicular to the light source panel.
    Type: Grant
    Filed: December 1, 2017
    Date of Patent: March 8, 2022
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE DISPLAY TECHNOLOGY CO., LTD.
    Inventors: Weipin Hu, Xiang Feng, Congcong Wei, Chun Wang, Mingxiao Jiang, Xiao Sun
  • Patent number: 11269204
    Abstract: A viewing angle switchable liquid crystal display device includes a display panel. The display panel includes a first substrate, a second substrate disposed opposite the first substrate, and a liquid crystal layer disposed between the first substrate and the second substrate. The second substrate is provided with a first electrode and a second electrode. The first electrode is a common electrode, and the second electrode is a pixel electrode. The first substrate is provided with a third electrode for controlling the switching of the viewing angle. A periodic alternating voltage is applied to the third electrode when the viewing angle of the liquid crystal display device is switched, and a period of the periodic alternating voltage is an even multiple of a refresh period of each frame of the display panel.
    Type: Grant
    Filed: December 1, 2016
    Date of Patent: March 8, 2022
    Assignee: INFOVISION OPTOELECTRONICS (KUNSHAN) CO., LTD.
    Inventors: Te-Chen Chung, Chia-Te Liao, Zifang Su, Limei Jiang
  • Patent number: 11249362
    Abstract: Disclosed is a liquid crystal display apparatus in which a low-resistance alignment film and a low-resistance liquid crystal layer are provided only in red (R) and green (G) pixel areas so as to prevent bright pixel defects caused by occurrence of data coupling (DC). The liquid crystal display apparatus includes gate lines and data lines arranged on a first substrate so as to define red (R), green (G) and blue (B) pixel areas, thin film transistors provided at intersections between the gate lines and the data lines, a first alignment film provided on the first substrate, a second substrate arranged with a uniform gap with the first substrate, red, green and blue color filter layers provided on the second substrate, and a second alignment film provided on the second substrate, wherein the first alignment film provided on the red and green color filter layers is a low-resistance alignment film.
    Type: Grant
    Filed: December 18, 2020
    Date of Patent: February 15, 2022
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Min-Suk Kong, Moon-Soo Kang, Jong-Chun Lim
  • Patent number: 11246194
    Abstract: A driver circuit for a semiconductor light source and to a method for controlling the brightness thereof are provided. When a pulse width modulated semiconductor light source reaches a duty cycle threshold value, the voltage is increased or decreased through a variable voltage source in order to achieve a higher dynamic range.
    Type: Grant
    Filed: July 24, 2018
    Date of Patent: February 8, 2022
    Assignee: SCHOTT AG
    Inventors: Bernd Woelfing, Andreas Hatzenbuehler
  • Patent number: 11227138
    Abstract: A LCD device defining a display area includes a color filter substrate, a thin film transistor (TFT) substrate facing the color filter substrate, a backlight module on a side of the TFT substrate away from the color filter substrate, a transparent cover on a side of the color filter substrate away from the TFT substrate, and a fingerprint sensor in the display area. The fingerprint sensor defines a fingerprint sensing area in the display area. The LCD device further includes a light emitting diode on a side of the transparent cover adjacent to the color filter substrate. The light emitting diode is configured to emit light toward the fingerprint sensing area of the transparent cover.
    Type: Grant
    Filed: December 2, 2019
    Date of Patent: January 18, 2022
    Assignee: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: Wei-Chih Chang, Kuo-Sheng Lee, I-Min Lu
  • Patent number: 11208595
    Abstract: Compounds of the formula I, in which Y1 denotes —O— or —CH2—, and the groups R1, L1 to L6 and X1 have the meanings indicated in claim 1. A process for the preparation thereof, and liquid-crystalline media comprising at least one compound of the formula I and electro-optical displays containing a liquid-crystalline medium this type. The compounds of the formula I include, as structural element, a combination of a 1,4-substituted cyclohexene ring besides a dioxane or tetrahydropyran ring and a substituted biphenyl group.
    Type: Grant
    Filed: March 17, 2020
    Date of Patent: December 28, 2021
    Assignee: Merck Patent GmbH
    Inventors: Constanze Brocke, Katharina Linke, Sven Christian Laut
  • Patent number: 11199871
    Abstract: A display device includes a substrate including a display area, a non-display area, a first additional area connected to the non-display area at a first boundary, and a second additional area connected to the first additional area at a second boundary, pixels on the display area, an encapsulation film on the pixels, electrodes on the encapsulation film, pads on the second additional area, sensing wires connecting the electrodes and the pads, a first sensing insulating film on the encapsulation film, and a second sensing insulating film on the first sensing insulating film. The substrate includes a curved first side in the first additional area and the first additional area decreases in width from the first boundary to the second boundary, and a boundary of the first sensing insulating film is closer to the first side than a boundary of the second sensing insulating film is to the first side.
    Type: Grant
    Filed: February 18, 2020
    Date of Patent: December 14, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Young Woo Park, Ki Ho Bang, Sang Hyun Jun, Won Suk Choi
  • Patent number: 11187961
    Abstract: A liquid crystal lens and an imaging device including the liquid crystal lens are provided. The liquid crystal lens includes: a first substrate and a second substrate arranged opposite to each other; a liquid crystal layer located between the first substrate and the second substrate; the liquid crystal layer is configured to transmit a first portion of incident light transmitted through the first substrate, and converge the first portion of incident light to a predetermined region of the second substrate; and a light adjustment structure arranged between the first substrate and the second substrate, and configured to enable a second portion of incident light transmitted through the first substrate to be transmitted through the liquid crystal layer and converged to the predetermined region.
    Type: Grant
    Filed: June 12, 2019
    Date of Patent: November 30, 2021
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Lijia Zhou, Zhidong Wang, Junrui Zhang, Rongjian Yan, Quanguo Zhou, Li Tian, Yungchiang Lee, Meng Guo
  • Patent number: 11183525
    Abstract: An image sensor includes a substrate including a plurality of unit pixels, a stack structure on the substrate, and a grid pattern between ones of the plurality of unit pixels on the stack structure. The grid pattern includes a lower grid pattern and an upper grid pattern on the lower grid pattern, the lower grid pattern including lanthanum oxide (LaO), amorphous silicon (a-Si), or polysilicon (poly-Si) and the upper grid pattern including a conductive material.
    Type: Grant
    Filed: May 2, 2019
    Date of Patent: November 23, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Ha Jin Lim
  • Patent number: 11164931
    Abstract: The present disclosure provides a display panel and a display device. The display panel has a display area and a non-display area surrounding the display area. The display panel includes: at least one barrier portion located in the non-display area, the at least one barrier portion including a first barrier portion and a second barrier portion, and the second barrier portion being located at a side of the first barrier portion that is away from the display area; a first signal line for applying a first signal; and at least one electrostatic discharge unit arranged between the first barrier portion and the second barrier portion. The at least one electrostatic discharge unit includes a first electrostatic discharge unit. The first electrostatic discharge unit is connected to the first signal line and configured to discharge static electricity on the first signal line.
    Type: Grant
    Filed: June 26, 2019
    Date of Patent: November 2, 2021
    Assignee: SHANGHAI TIANMA AM-OLED CO., LTD.
    Inventors: Jian Jin, Congyi Su
  • Patent number: 11158277
    Abstract: A display device includes: a plurality of sub-pixels each including a memory block that includes a plurality of memories each of which is configured to store sub-pixel data; a plurality of memory selection line groups provided to respective rows and each including a plurality of memory selection lines electrically coupled to the corresponding memory blocks in the sub-pixels that belong to a corresponding row; a memory selection circuit configured to simultaneously output a memory selection signal to the memory selection line groups, the memory selection signal being a signal for selecting one from the plurality of memories in each of the memory blocks. In accordance with the memory selection lines supplied with the memory selection signal, the sub-pixels display an image based on the sub-pixel data stored in memories in the respective sub-pixels, the memories each being one of the plurality of memories in the corresponding sub-pixel.
    Type: Grant
    Filed: May 12, 2020
    Date of Patent: October 26, 2021
    Assignee: Japan Display Inc.
    Inventors: Yutaka Mitsuzawa, Takayuki Nakao, Masaya Tamaki, Yutaka Ozawa
  • Patent number: 11143898
    Abstract: Described are multicolor liquid crystal writing devices that exhibit high brightness and contrast and methods for manufacturing multicolor liquid crystal writing devices that exhibit high brightness and contrast. The liquid crystals used in the devices and methods described are photosensitized using UV light to modify a reflective character of the liquid crystals and different amounts, intensities, wavelengths, or exposure durations of UV light provide for different reflective colors.
    Type: Grant
    Filed: September 12, 2019
    Date of Patent: October 12, 2021
    Assignee: WICUE, INC.
    Inventors: Fenghua Li, Rui Bao
  • Patent number: 11137650
    Abstract: The present application relates to an optical element, a driving method of the optical element, a transmittance-variable device and a use thereof. In one example, the present application may provide a driving method suppressing a back-flow phenomenon caused by a bulk liquid crystal compound even when a cell gap of a liquid crystal layer becomes thick. The driving method may ensure excellent response speeds and driving characteristics.
    Type: Grant
    Filed: September 27, 2018
    Date of Patent: October 5, 2021
    Inventors: Eun Jung Lim, Dong Hyun Oh, Jung Sun You, Jin Hong Kim, Hyun Jun Lee, Nam Hun Kim, Min Jun Gim
  • Patent number: 11131872
    Abstract: A mirror display apparatus that subjects a mirror optical element to pulse voltage driving so that a reflectivity in a mirror mode can be changed by means of a duty cycle of the pulse voltage is provided. A mirror display apparatus includes a monitor display device and a mirror optical element disposed on the front side of the monitor display device. The mirror optical element includes a liquid-crystal panel with a reflection-type polarizer disposed on the back side thereof. The mirror optical element has a reflectivity and a transmissivity that are changed in respective directions opposite to each other via electric driving using a voltage applied to the liquid-crystal panel. A control circuit drives the liquid-crystal panel using a pulse voltage and performs control to change the reflectivity and the transmissivity of the mirror optical element by changing a duty cycle of the pulse voltage.
    Type: Grant
    Filed: December 28, 2020
    Date of Patent: September 28, 2021
    Assignee: MURAKAMI CORPORATION
    Inventors: Yoshihiro Gohara, Noriyuki Unno, Mina Sugino
  • Patent number: 11099446
    Abstract: When polymer-stabilized blue-phase liquid crystal is driven by comb-shaped electrodes, a large electric field is generated near the electrodes, and electrostriction results in degradations in the switching speed of polymer-stabilized blue-phase liquid crystal. This optical switching engine is manufactured by inserting polymer-stabilized blue-phase liquid crystal between parallel plates on which are formed conventional thin film electrodes, followed by bonding a polarization grating plate thereto, and disposing or bonding two silicon wedges having triangular cross sections to the sides thereof so as to have rotational symmetry with each other.
    Type: Grant
    Filed: June 27, 2018
    Date of Patent: August 24, 2021
    Assignee: NATIONAL INSTITUTE OF ADVANCED INDUSTRIAL SCIENCE AND TECHNOLOGY
    Inventor: Hisato Uetsuka
  • Patent number: 11054679
    Abstract: A display apparatus and a control method for controlling a display apparatus are provided. The display apparatus includes: a display panel including multiple rows of scan lines and multiple columns of data lines, the scan lines and the data lines defining multiple sub-pixel regions, a first view pixel and a second view pixel being provided in each sub-pixel region; and a view control device connected with display panel, the view control device configured to: identify the number of users on a user side of display panel; and control a driving voltage of the scan lines according to the number of the users, so that the display panel controls first view pixel and second view pixel according to driving voltage so as to display a first view mode or a second view mode. A visual angle in the first view mode is greater than a visual angle in the second view mode.
    Type: Grant
    Filed: August 9, 2019
    Date of Patent: July 6, 2021
    Assignees: CHONGQING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Gang Chen, Zhihui Wang, He Sun, Xiuzhu Tang, Guang Wang, Yanli Zhao, Xiaolong Liu, Shuo Yang, Di Wang, Yu Wang
  • Patent number: 11054956
    Abstract: A touch device includes a touch panel, a driving circuit, a sensing circuit, and a controller. The touch panel includes a first scan line cascaded with a first diode, a second scan line cascaded with a second diode, and a sense line interlaced with the first scan line and a second scan line. The first scan line and the second scan line are cascaded between a first node and a second node. The driving circuit generates a scan voltage across the first node and the second node according to a scan signal. The sensing circuit detects a capacitance of the sense line according to a detection signal to generate a receive signal. The controller generates the scan signal and the sense signal and determines the location of a touch point on the touch panel according to the scan voltage and the receive signal.
    Type: Grant
    Filed: March 25, 2020
    Date of Patent: July 6, 2021
    Assignee: WISTRON CORP.
    Inventors: Hua Min Tseng, Chiu Yen Lin
  • Patent number: 11051405
    Abstract: A flexible display including a buffer layer, a plurality of pixel structures, a plurality of first pads, a plurality of first conductive through holes, a flexible circuit board and an adhesive layer is provided. The pixel structures are disposed on a first surface of the buffer layer. The first pads are disposed on a second surface of the buffer layer. The first conductive through holes are embedded in the buffer layer. The first pads are respectively electrically connected to the pixel structures through the first conductive through holes. The adhesive layer is disposed between the second surface of the buffer layer and the flexible circuit board. An orthogonal projection of the adhesive layer on the buffer layer overlaps an orthogonal projection of the pixel structures on the buffer layer. The first pads are electrically connected to first signal lines of the flexible circuit board.
    Type: Grant
    Filed: February 17, 2020
    Date of Patent: June 29, 2021
    Assignee: Au Optronics Corporation
    Inventors: Keh-Long Hwu, Yung-Chih Chen, Tsung-Ying Ke, Wan-Tsang Wang, Chun-Hsin Liu
  • Patent number: 11024216
    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: February 14, 2020
    Date of Patent: June 1, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hye-Jin Shin, Won-Kyu Kwak, Kwang-Min Kim
  • Patent number: 11003016
    Abstract: A flexible optical element adopting liquid crystals (LCs) as the materials for realizing electrically tunable optics is foldable. A method for manufacturing the flexible element includes patterned photo-polymerization. The LC optics can include a pair of LC layers with orthogonally aligned LC directors for polarizer-free properties, flexible polymeric alignment layers, flexible substrates, and a module for controlling the electric field. The lens power of the LC optics can be changed by controlling the distribution of electric field across the optical zone. Lens power control can be provided using combinations of electrode configurations, drive signals and anchoring strengths in the alignment layers.
    Type: Grant
    Filed: September 21, 2018
    Date of Patent: May 11, 2021
    Assignee: COOPERVISION INTERNATIONAL LIMITED
    Inventors: Hung-Chun Lin, Yu-Jen Wang, Hao-Ren Lo, Yi-Hsin Lin
  • Patent number: 10972018
    Abstract: A kinetic energy harvester includes a P-type hydrogel composite electrode; an N-type hydrogel composite electrode; a separator disposed between the P-type hydrogel composite electrode and the N-type hydrogel composite electrode; and a current collector between the P-type hydrogel composite electrode and the N-type composite electrode.
    Type: Grant
    Filed: March 5, 2019
    Date of Patent: April 6, 2021
    Assignees: SAMSUNG ELECTRONICS CO., LTD., THE PENN STATE RESEARCH FOUNDATION
    Inventors: Kyounghwan Choi, Qiming Zhang, Qing Wang, Yong Zhang, Changkyu Jeong
  • Patent number: 10942411
    Abstract: A liquid crystal display device of the present invention includes: a first substrate including a pair of counter electrodes; a second substrate including a pixel electrode and a common electrode; and a liquid crystal layer that includes liquid crystal molecules aligned horizontally with the substrates. The liquid crystal display device is configured to perform display in any of multiple display modes. The multiple display modes include: a first display mode of performing display in a first state where an alternating-current voltage is applied at a first frequency between the pair of counter electrodes; and a second display mode of performing display in at least one of a second state where no voltage is applied between the pair of counter electrodes, or a third state where an alternating-current voltage is applied at a second frequency that is higher than the first frequency between the pair of counter electrodes.
    Type: Grant
    Filed: February 10, 2020
    Date of Patent: March 9, 2021
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Koji Murata, Hidefumi Yoshida
  • Patent number: 10903681
    Abstract: A solar display device and a power switching method are disclosed. The solar display device includes a plurality of solar pixel components, a plurality of micro display components and a power control circuit. The solar pixel components are configured to generate a first solar power and a second solar power. The power control circuit is configured to compare the first solar power and a reference signal. The power control circuit is further configured to drive the micro display components by using one of a system power and the second solar power according to a comparison result.
    Type: Grant
    Filed: October 30, 2019
    Date of Patent: January 26, 2021
    Assignee: Acer Incorporated
    Inventors: Jui-Chieh Hsiang, Chih-Chiang Chen
  • Patent number: 10885858
    Abstract: An array substrate, a display panel, a display device and a method for designing the display panel are provided. The array substrate includes a plurality of pixel units, wherein each of the pixel units includes a plurality of sub-pixels, each of the sub-pixels includes a pixel electrode, and the pixel electrode includes a plurality of strip-shaped sub-pixel electrodes arranged in a comb-teeth form, and the sub-pixels of one of the pixel units include at least two sub-pixels. A width of the strip-shaped sub-pixel electrode of any one of the at least two sub-pixels is different from a width of the strip-shaped sub-pixel electrode of any other one of the at least two sub-pixels, and/or an interval between the strip-shaped sub-pixel electrodes of any one of the at least two sub-pixels is different from an interval between the strip-shaped sub-pixel electrodes of any other one of the at least two sub-pixels.
    Type: Grant
    Filed: July 13, 2017
    Date of Patent: January 5, 2021
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Jilei Gao, Jinliang Liu, Yang Zhang, Xuebing Jiang, Songmei Sun
  • Patent number: 10884262
    Abstract: This disclosure provides a liquid crystal lens, a method for producing the same, and a display apparatus. This liquid crystal lens comprises: a first substrate and a second substrate, wherein a plurality of prism units are provided between the first substrate and the second substrate, each of the prism units comprises a first electrode and a second electrode group, the second electrode group comprises a plurality of second electrodes, a liquid crystal layer is provided between the first electrode and the second electrode group, a transparent insulating separation structure is provided between two adjacent prism units, and the refractive index of the separation structure is the same as that of the long axis of the liquid crystal molecule constituting the liquid crystal layer. The liquid crystal lens in this disclosure is used for a naked-eye 3D display apparatus.
    Type: Grant
    Filed: July 12, 2017
    Date of Patent: January 5, 2021
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Haiyan Wang, Zhongxiao Li
  • Patent number: 10877312
    Abstract: Provided is a reflection system including a windshield and a feeder. The windshield includes an upper transparent layer, an upper electrode, a liquid crystal layer, a lower electrode array, and a lower transparent layer, and the feeder is configured to apply a voltage pattern to the lower electrode array. A refractive index of the liquid crystal layer varies across the liquid crystal layer according to the voltage pattern applied by the feeder to the lower electrode array, and the feeder is configured to apply a first voltage pattern to cause a first change in the refractive index of the liquid crystal layer such that parallel light rays incident to the windshield and reflected from the upper transparent layer and the lower transparent layer, respectively, meet at a virtual focal point.
    Type: Grant
    Filed: May 24, 2019
    Date of Patent: December 29, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yoonsun Choi, Dong Kyun Nam, Jinho Lee
  • Patent number: 10839745
    Abstract: A display unit includes a display panel, a photochromic layer, and an ultraviolet absorption layer. The photochromic layer is configured to be colored by ultraviolet light and be decolored or color-faded by visible light. The display panel includes an image display surface with a plurality of pixels. The pixels are provided below the image display surface and each include an organic light-emitting layer.
    Type: Grant
    Filed: January 10, 2019
    Date of Patent: November 17, 2020
    Assignee: JOLED INC.
    Inventors: Masahiko Kondo, Jiro Yamada, Atsuhito Murai, Yasuhiro Terai, Noriteru Maeda
  • Patent number: 10831075
    Abstract: A display device is provided. The display device comprises a plurality of data lines extending in a first direction. The display device also comprises a plurality of gate lines. The plurality of gate lines comprises a first gate line, a second gate line and a third gate line extending in a second direction different than the first direction to form a matrix with the plurality of data lines. The first gate line and the second gate line are separated from each other and are arranged in a same row of the matrix. The display device further comprises a first gate connector line and a second gate connector line, respectively, electrically connecting the first gate line and the second gate line to one or two gate drivers. The first gate connector line and the second gate connector line extend in the first direction.
    Type: Grant
    Filed: October 29, 2018
    Date of Patent: November 10, 2020
    Assignee: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
    Inventors: Norimichi Shirai, Ryutaro Oke, Daisuke Kajita
  • Patent number: 10825381
    Abstract: A display system includes: a display device that transits from a power-off state to a power-on state; and a brightness calculation device that calculates a brightness setting sequence based on a humidity amount over a first period in which the display device is in the power-off state, the brightness setting sequence being a sequence of a setting value of a brightness of the display device during a second period, the second period starting from when the display device transits to the power-on state, the setting value changing in time series. The display device displays an image signal at a brightness according to the brightness setting sequence.
    Type: Grant
    Filed: July 15, 2019
    Date of Patent: November 3, 2020
    Assignee: NEC DISPLAY SOLUTIONS, LTD.
    Inventors: Shigenobu Jo, Hironori Kobayashi
  • Patent number: 10788727
    Abstract: A liquid crystal light deflector includes a first electrode layer including a plurality of pattern electrodes arranged with a constant pitch in a first direction on a first substrate, a first alignment layer covering the first electrode layer and having a plurality of concave portions formed on an upper surface thereof and extending in parallel to a second direction perpendicular to the first direction, a liquid crystal layer including a plurality of liquid crystal molecules each having a long diameter substantially parallel to the concave portions on the first alignment layer, a second electrode layer, which is a common electrode, disposed on the liquid crystal layer, and a second substrate disposed on the second electrode layer.
    Type: Grant
    Filed: November 10, 2017
    Date of Patent: September 29, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Young Kim, Yunhee Kim, Hoon Song, Kanghee Won, Yeonhee Kim, Kideok Bae, Hongseok Lee
  • Patent number: 10782557
    Abstract: An adjustable reflective device includes a base substrate, a reflective film disposed above the base substrate, and an adjustment assembly configured to control reflectivities of different portions of the reflective film.
    Type: Grant
    Filed: September 24, 2018
    Date of Patent: September 22, 2020
    Assignees: BEIJING BOE DISPLAY TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yang You, Yun Qiu, Ruizhi Yang, Zhenhua Lv, Ruiyong Wang, Yonglian Qi
  • Patent number: 10784965
    Abstract: A method selects a phase shift profile to be applied to a programmable optical phase shift modulator having an array of pixels. A base stepped phase shift profile for the modulator is selected such that when applied to the modulator, the base stepped phase shift profile allows the modulator to function as a blazed grating steering an optical beam through a prescribed angle. The base stepped phase shift profile has a plurality of segments each extending over a given number of the pixels defining a linear array of pixels. Each segment has first and last pixels in the linear array of pixels. Variations in minimum and maximum luminosity levels among the segments of the base stepped phase shift profile are reduced so that any changes to a slope of each segment arising from reducing the variations in the minimum and maximum luminosity level is maintained below a given amount.
    Type: Grant
    Filed: May 31, 2019
    Date of Patent: September 22, 2020
    Assignee: Molex, LLC
    Inventor: Bradford Smith
  • Patent number: 10739654
    Abstract: The present application provides an array substrate including an array layer, a first insulating layer, a second insulating layer, and a first indium tin oxide (ITO) layer. The array layer includes first thin film transistors and second thin film transistors, the first ITO layer electrically connected to the first thin film transistors, and a second ITO layer and a polymer dispersed liquid crystal layer are further disposed between the first insulating layer and the second insulating layer, the second ITO layer electrically connected to the second thin film transistors and electrically insulated from the first thin film transistors.
    Type: Grant
    Filed: February 21, 2019
    Date of Patent: August 11, 2020
    Assignee: Wuhan China Star Optoelectronics Technology Co., Ltd.
    Inventor: Wei Cheng
  • Patent number: 10714507
    Abstract: A semiconductor device includes a first resin layer, one or more first wirings above the first resin layer, a second resin layer above the first wiring, the second resin layer including a first opening part, a transistor above the second resin layer, the transistor including a semiconductor layer, a gate insulation layer, and a gate electrode layer; and a second wiring above the second resin layer, the second wiring being connected to the transistor and connected to the first wiring via the first opening part.
    Type: Grant
    Filed: April 16, 2019
    Date of Patent: July 14, 2020
    Assignee: Japan Display Inc.
    Inventors: Toshinari Sasaki, Shinichiro Oka, Takuma Nishinohara
  • Patent number: 10698271
    Abstract: A liquid crystal display panel includes a first substrate, a second substrate, a liquid crystal layer, a plurality of first regions and a plurality of second regions. The first regions and the second regions are formed on the first substrate and the second substrate. In a narrow viewing mode, the luminous flux of the first regions along a first viewing direction is different from that of the first regions along a second viewing direction opposite to the first viewing direction, and the luminous flux of the second regions along the first viewing direction is substantially different from that of the first regions along the first viewing direction.
    Type: Grant
    Filed: August 27, 2018
    Date of Patent: June 30, 2020
    Assignee: AU OPTRONICS CORPORATION
    Inventors: Chao-Wei Yeh, Chien-Huang Liao, Wen-Hao Hsu, Tien-Lun Ting, Chao-Yuan Chen, Jenn-Jia Su
  • Patent number: 10684513
    Abstract: A liquid crystal display includes a pair of substrates, a liquid crystal layer, and an alignment-controlling layer. The liquid crystal layer is disposed between the pair of substrates and includes a liquid crystal material. The alignment-controlling layer, which is formed by polymerization of a polymerizable monomer added to a liquid crystal composition forming the liquid crystal layer so as to be brought into contact with the liquid crystal layer, and controls an alignment of the liquid crystal material to the substrate at a predetermined angle. One substrate of the pair of substrates has an alignment film coated and formed so as to be brought into contact with the alignment-controlling layer, and the other substrate has no alignment film.
    Type: Grant
    Filed: September 6, 2018
    Date of Patent: June 16, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventor: Masanobu Mizusaki
  • Patent number: 10657295
    Abstract: A hardware encryption housing and a payment device using the hardware encryption housing includes a top shell, a bottom shell, a circuit board and a trigger switch configured to transmit a trigger signal when the top shell is separated from the bottom shell. A security chip, mounted on the circuit board, has a storage module configured to store key information and a detection module configured to clear the key information and lock the security chip after the trigger signal is detected. The trigger signal is transmitted when the top shell is separated from the bottom shell, and the detection module is provided in the security chip to detect whether the trigger switch transmits a trigger signal. When detected, the key information in the storage module is cleared and the security chip is locked.
    Type: Grant
    Filed: July 31, 2017
    Date of Patent: May 19, 2020
    Assignee: PAX COMPUTER TECHNOLOGY (SHENZHEN) CO., LTD.
    Inventors: Xiaoyan Su, Yuzhuo Wang, Liheng Deng
  • Patent number: 10656476
    Abstract: A liquid crystal panel includes a first substrate, a second substrate, a liquid crystal layer disposed between the first substrate and the second substrate, and a spacer. The first substrate includes pixel electrodes and a common electrode overlapping the pixel electrodes. The second substrate has a display surface displaying an image thereon and is arranged opposite the first substrate and includes a transparent electrode overlapping the common electrode. The spacer has conductivity and is disposed in a display region where the image is displayed and between the first substrate and the second substrate and contacted with the common electrode and the transparent electrode.
    Type: Grant
    Filed: November 27, 2018
    Date of Patent: May 19, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventor: Masakatsu Tominaga
  • Patent number: 10634969
    Abstract: In a liquid crystal display apparatus in which a first substrate and a second substrate are disposed in parallel to each other through a liquid crystal layer, a liquid crystal molecule in the liquid crystal layer is rotated in a plane parallel to the first substrate and the second substrate by driving voltage applied to the liquid crystal layer. A voltage value corresponding to a maximum gradation value of the driving voltage applied to the liquid crystal layer is a driving voltage value at which transmittance peaks based on V-T characteristics in an inclination direction inclined from a normal direction of a display surface of the liquid crystal display apparatus to a direction in which a refractive index of the liquid crystal layer is maximum.
    Type: Grant
    Filed: December 7, 2017
    Date of Patent: April 28, 2020
    Assignee: TIANMA MICROELECTRONICS CO., LTD.
    Inventor: Hidenori Ikeno
  • Patent number: 10613391
    Abstract: A method for preparing a liquid crystal alignment layer, a liquid crystal alignment layer, and a display device. The method for preparing a liquid crystal alignment layer includes: S1, dripping liquid crystals and performing cell-assembling, wherein a liquid alignment material is added to the liquid crystals and the alignment material is curable and includes molecules capable of inducing alignment of liquid crystal molecules; S2, applying an electric field or a magnetic field, wherein the direction of the electric field is approximately the same as a preset direction of the liquid crystal alignment layer, and the direction of the magnetic field is perpendicular to the preset direction of the liquid crystal alignment layer; and S3, performing curing while maintaining the electric field or the magnetic field until the alignment material completes the curing reaction.
    Type: Grant
    Filed: February 5, 2016
    Date of Patent: April 7, 2020
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Qiangtao Wang, Yun Sik Im
  • Patent number: 10613392
    Abstract: A method is disclosed for realizing a liquid crystal tri-dimensional aligned structure, including: providing a first substrate having a first surface; forming a liquid crystal layer in contact to said first surface, said liquid crystal layer including a polymerizable liquid crystal compound; realizing a first aligning formation within said liquid crystal layer by irradiating a first portion of said liquid crystal layer with electromagnetic or electron beam radiation according to a given first pattern, so that said first portion of liquid crystal compound becomes polymerized and said first aligning formation is made of said polymerized liquid crystal compound according to said given first pattern, said first aligning structure defining a first aligning axis; locally orienting optical axes of molecules of said liquid crystal layer along said first aligning axis.
    Type: Grant
    Filed: December 23, 2014
    Date of Patent: April 7, 2020
    Assignees: CONSIGLIO NAZIONALE DELLE RICERCHE—CNR, LABORATORIO EUROPEO DI SPETTROSCOPIE NON LINEARI (LENS)
    Inventors: Hao Zeng, Piotr Jan Wasylczyk, Diederik Sybolt Wiersma, Camilla Parmeggiani, Chih-Hua Ho
  • Patent number: 10593254
    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: November 20, 2018
    Date of Patent: March 17, 2020
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hye-Jin Shin, Won-Kyu Kwak, Kwang-Min Kim
  • Patent number: 10580336
    Abstract: A display driver device includes a timing controller, a display driver integrated circuit, a flexible printed circuit board, a connection line, and a test line. The timing controller includes an output pad unit. The display driver integrated circuit includes an input pad unit. The connection line is formed at the flexible printed circuit board to electrically connect the input pad unit with the output pad unit. The test line is formed at the flexible printed circuit board, and is used to provide a test signal to the input pad unit. The display driver device operates in a normal mode or operates in the test mode based on a test mode signal.
    Type: Grant
    Filed: July 13, 2017
    Date of Patent: March 3, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Minhwa Jang, Chulho Choi, Hyunje Park
  • Patent number: 10571742
    Abstract: A display panel and a display device are provided. The display panel comprises: a display area; a non-display area surrounding the display area; and a plurality of primary-color pixels and a plurality of color-mixing pixels disposed in the display area. A primary-color pixel includes a first electrode, and the first electrode includes M number of stripe-shaped first electrode branches. A color-mixing pixel includes a second electrode, and the second electrode includes N number of stripe-shaped second electrode branches, where M>N, and both M and N are integers greater than 0. A width D2 of the second electrode branch is greater than a width D1 of the first electrode branch.
    Type: Grant
    Filed: May 25, 2018
    Date of Patent: February 25, 2020
    Assignee: SHANGHAI TIANMA MICRO-ELECTRONICS CO., LTD.
    Inventors: Zhaokeng Cao, Dandan Qin, Min Cai
  • Patent number: 10558085
    Abstract: The present invention provides a liquid crystal display device capable of achieving a high contrast ratio, a wide viewing angle, and a high-speed response. The liquid crystal display device includes an upper substrate; a lower substrate; and a liquid crystal layer sandwiched between the upper substrate and the lower substrate. The lower substrate includes a first electrode, and a second electrode and a third electrode arranged in a layer different from the first electrode. The first electrode includes a trunk portion and multiple branch portions branching from the trunk portion and is provided with an opening between the branch portions. The second electrode and the third electrode constitute a pair of comb-shaped electrodes and each include a trunk portion and multiple branch portions branching from the trunk portion. The branch portions of the first electrode are each bent at a predetermined angle. The electrodes each have a predetermined configuration.
    Type: Grant
    Filed: July 5, 2017
    Date of Patent: February 11, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Takuma Tomotoshi, Mitsuhiro Murata, Yosuke Iwata, Satoshi Matsumura
  • Patent number: 10558098
    Abstract: Provided is a display apparatus including a liquid crystal panel and a shutter panel, wherein the shutter panel includes a shutter layer configured to change a polarizing axis of light transmitted through a selected area, a shutter polarizing layer disposed on a front surface of the shutter layer, and configured to transmit light having the polarizing axis changed by the shutter layer, and a quantum rod layer disposed on a rear surface of the shutter layer, and configured to convert a wavelength of light that is incident to the shutter panel, and to transmit light having a polarizing axis of a predetermined direction to the shutter layer. Therefore, the display apparatus may implement a local dimming structure and improve the optical efficiency.
    Type: Grant
    Filed: October 25, 2018
    Date of Patent: February 11, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Byoung Jin Cho, Nae Won Jang, Seung Hun Chae
  • Patent number: 10545605
    Abstract: An electronic device is provided. The electronic device includes a display panel, a plurality of input sensing panels which are one of layered on and bonded to the display panel, a driver integrated circuit (IC) connected to the display panel and configured to generate a synchronization signal for controlling the display panel, and a plurality of input sensors connected to the plurality of input sensing panels and configured to scan a respective one of the plurality of input sensing panels, according to scan timing, which is time-divided with reference to the synchronization signal.
    Type: Grant
    Filed: July 11, 2017
    Date of Patent: January 28, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jin-Man Kim, Min Uk Kim, Kyungok Jang, Youngho Cho, Ju-Hee Han, Ji-Woo Lee