Liquid Crystal Display Elements (lcd) Patents (Class 345/87)
Color (Class 345/88)
Gray scale capability (e.g., halftone) (Class 345/89)
Control means at each display element (Class 345/90)
Waveform generation (Class 345/94)
Specific display element control means (e.g., latches, memories, logic) (Class 345/98)
Data signal compensation in response to temperature (Class 345/101)
Backlight control (Class 345/102)
Grouped electrodes (e.g., matrix partitioned into sections) (Class 345/103)
Input/output liquid crystal display panel (Class 345/104)
  • Display device and method of controlling brightness of the same based on sample brightness levels
    Patent number: 11189233
    Abstract: A display device includes a display driver configured to drive pixels in correspondence with input image data, timing signals, and a brightness selection signal. The display driver includes a storage unit configured to store gamma data and a duty value for each of a plurality of sample brightness levels including a K-th sample brightness level, and a brightness controller, the display driver being configured to control the brightness of the display area according to the gamma data or the duty value or gamma data obtained by non-linearly interpolating gamma data of a (K?1)-th sample brightness level and the K-th sample brightness level, with respect to a tuning point brightness level. A light emission time of the pixels corresponding to the (K?1)-th sample brightness level is less than or equal to 10% shorter than the light emission time of the pixels corresponding to the K-th sample brightness level.
    Type: Grant
    Filed: April 17, 2020
    Date of Patent: November 30, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Min Seong Son, Hyun Jung Son, Jae Cheon Park, Seung Kyu Lee, Yoon Gyu Lee, Sun Joon Hwang
  • Semiconductor device and method for manufacturing semiconductor device
    Patent number: 11177289
    Abstract: An aperture ratio of a semiconductor device is improved. A driver circuit and a pixel are provided over one substrate, and a first thin film transistor in the driver circuit and a second thin film transistor in the pixel each include a gate electrode layer, a gate insulating layer over the gate electrode layer, an oxide semiconductor layer over the gate insulating layer, source and drain electrode layers over the oxide semiconductor layer, and an oxide insulating layer in contact with part of the oxide semiconductor layer over the gate insulating layer, the oxide semiconductor layer, and the source and drain electrode layers. The gate electrode layer, the gate insulating layer, the oxide semiconductor layer, the source and drain electrode layers, and the oxide insulating layer of the second thin film transistor each have a light-transmitting property.
    Type: Grant
    Filed: October 24, 2019
    Date of Patent: November 16, 2021
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Junichiro Sakata, Hiroyuki Miyake, Hideaki Kuwabara, Tatsuya Takahashi
  • DEMUX display panel and OLED display
    Patent number: 11176893
    Abstract: A demultiplexer (DEMUX) display panel comprising an array substrate, a plurality of DEMUX switches, and a second control signal generating circuit which is connected to a second control signal input terminal and is configured to generate a second control signal. The second control signal is sent to the DEMUX switch before scanning each row of the sub-pixels to make the DEMUX switch transmit a reset signal to the corresponding first data lines through both of the data signal output terminals.
    Type: Grant
    Filed: August 1, 2018
    Date of Patent: November 16, 2021
    Assignee: Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd.
    Inventor: Mian Zeng
  • Display apparatus and method of manufacturing the same
    Patent number: 11177337
    Abstract: A display apparatus includes a display area on a substrate, and in which pixels are arranged; a transmission area in the display area around which the pixels are disposed; a divided data line and constant voltage lines passing through the pixels; and a bypass line connecting the data line and bypassing the transmission area, wherein the bypass line overlaps the constant voltage line.
    Type: Grant
    Filed: January 9, 2020
    Date of Patent: November 16, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Youngwan Seo, Hyeongseok Kim, Cheolgon Lee, Meehye Jung
  • Display apparatus having gate driving circuit
    Patent number: 11176870
    Abstract: A display apparatus includes: a display panel including a plurality of pixels respectively connected to a plurality of gate lines; a gate driving circuit including a plurality of driving stages configured to apply gate signals to the gate lines; a voltage generator configured to output a gate-on voltage through a voltage output terminal thereof; and a signal controller configured to sense a variation in current of the voltage output terminal to output a back bias control voltage corresponding to the sensed current variation, wherein each of the driving stages comprises a plurality of oxide thin film transistors and at least one of the oxide thin film transistors is a four-terminal transistor in which a threshold voltage thereof is controlled by the back bias control voltage.
    Type: Grant
    Filed: November 30, 2018
    Date of Patent: November 16, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Soo-wan Yoon, Joon-chul Goh, Young-Soo Yoon, Bonghyun You
  • Method of operating a display device supporting a variable frame mode, and the display device
    Patent number: 11172160
    Abstract: In a method of operating a display device supporting a variable frame mode, frame data are received during a constant active period of a frame period including the active period and a variable blank period, the received frame data are written to a frame memory in the active period, the received frame data are outputted to a data driver in the active period to display an image based on the received frame data, a time of the variable blank period is counted, and, when the time of the variable blank period reaches a predetermined threshold blank time, the frame data stored in the frame memory are outputted to the data driver in the variable blank period to display an image based on the frame data stored in the frame memory.
    Type: Grant
    Filed: September 6, 2018
    Date of Patent: November 9, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hong-Kyu Kim, Yong-Bum Kim, Po-Yun Park, Dong-Hyun Yeo, Byungkil Jeon
  • Active discharge circuitry for display matrix
    Patent number: 11170698
    Abstract: Active discharge circuitry for fast discharging of charge on an LED display matrix includes a mechanism to effectuate circuit path switching so as to electrically connect a charged node to a discharge circuit for controlled discharging of unwanted charge until it reaches a desired (e.g., programmable) value. The active discharge circuitry includes a control circuit generating appropriate timing and digital control signals for starting and stopping (e.g., actuating a switch) the discharge activities. The disclosed techniques accommodate variations in channel-to-channel start times for mitigating ghosting effects that would otherwise be presented from the LED display matrix due to residual (i.e., unwanted) charges remaining electrically loaded on display elements via, for example, charged parasitic capacitance or other such transients, after a current driver of a specific channel has stopped driving.
    Type: Grant
    Filed: November 27, 2018
    Date of Patent: November 9, 2021
    Assignee: Planar Systems, Inc.
    Inventor: Shahnad Nadershahi
  • Gate on array circuit and display device
    Patent number: 11164536
    Abstract: A gate on array circuit for a display device using dual-gate architecture is disclosed. The GOA circuit comprises circuitry configured to, for a first display line of the display device, generate a first gate driving signal and a second gate driving signal for driving a first gate line and a second gate line of the first display line respectively. A first time period when the first gate driving signal is in an activation state for activating the first gate line of the first display line does not overlap with a first time period when the second gate driving signal is in the activation state for activating the second gate line of the first display line.
    Type: Grant
    Filed: May 8, 2020
    Date of Patent: November 2, 2021
    Assignee: NOVATEK MICROELECTRONICS CORP.
    Inventors: Hung-Hsiang Chen, Tso-Hua Chien, Huang-Chin Tang
  • Display device
    Patent number: 11158267
    Abstract: A display device includes a data driving circuit disposed in a non-display area and including output terminals for outputting a data voltage to the data-lines, a first fan-out line disposed in the non-display area and including a first end connected to an output terminal corresponding to a data line in a first-area of a display area and a second end connected to a first contact portion disposed in an area adjacent to an end of the data driving circuit, a second fan-out line disposed in the non-display-area and including a first end connected to an output terminal corresponding to a data-line in a second area of the display-area and a second end connected to the data-line in the second-area, and a bypass fan-out line disposed in the non-display area and the display area and including a first end connected to the first contact portion and a second end connected to the data-line in the first area.
    Type: Grant
    Filed: March 5, 2020
    Date of Patent: October 26, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Minjae Jeong, Gyung Soon Park, Chong Chul Chai, Jaeyong Jang
  • Circuit substrate, display device and driving method
    Patent number: 11156882
    Abstract: A circuit substrate, a display device and a driving method are provided. The circuit substrate includes a base substrate, a gate driving circuit, and at least one signal trace group which are on the base substrate. The signal trace group includes two signal traces, and the two signal traces are electrically connected with the gate driving circuit and are configured to provide clock signals with inverted phases to the gate driving circuit; the two signal traces are respectively in different layers and are insulated from each other; and orthographic projections of the two signal traces on the base substrate at least partially overlap with each other.
    Type: Grant
    Filed: April 25, 2019
    Date of Patent: October 26, 2021
    Assignees: CHONGQING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Peng Qin, Cheng Zuo, Kangpeng Dang, Yang Rao, Bo Wang, Zhong Jin, Lihua Jiang
  • Shift register, gate line driving method, array substrate, and display apparatus
    Patent number: 11151918
    Abstract: The present disclosure discloses a shift register, a gate line driving method, an array substrate, and a display apparatus, and belongs to the field of displays. The shift register comprises a plurality of shift register units each connected to a group of gate lines on an array substrate, wherein different shift register units are connected to different groups of gate lines, and each group of gate lines comprises at least two gate lines; and a control unit configured to control turn-on and turn-off of the gate lines, wherein the control unit is further configured to control various gate lines in a high resolution region to be turned on and turned off line by line, and control at least two adjacent gate lines in a low resolution region to be turned on and turned off synchronously.
    Type: Grant
    Filed: September 20, 2017
    Date of Patent: October 19, 2021
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Lei Mi, Shijun Wang, Yanna Xue
  • Display device supporting variable frame mode, and method of operating display device
    Patent number: 11138952
    Abstract: A display device supports a variable frame mode where each frame includes a variable blank period. The display device includes a display panel including a plurality of pixels, a backlight unit configured to generate light, a panel driver configured to drive the display panel, a backlight controller configured to drive the backlight unit, and a blank counter configured to count a time of the variable blank period. The backlight controller controls the backlight unit to increase an intensity of the light generated by the backlight unit as the counted time of the variable blank period increases.
    Type: Grant
    Filed: October 24, 2019
    Date of Patent: October 5, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jong Jae Lee, Yoon Soo Kwon, Young Ho Oh, Ju-Ah Lee
  • Electro-optical device and electronic apparatus
    Patent number: 11137647
    Abstract: A liquid crystal apparatus includes a first wiring substrate on which a first driving IC is mounted, a second wiring substrate disposed to overlap the first wiring substrate, a first terminal group electrically connected to the first wiring substrate and including a terminal electrically connected to the first driving IC, a second terminal group electrically connected to the second wiring substrate and including another terminal electrically connected to the terminal, and a monitoring pad provided on the second wiring substrate and electrically connected to the other terminal.
    Type: Grant
    Filed: February 25, 2020
    Date of Patent: October 5, 2021
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Shinsuke Fujikawa
  • Vehicle display device, method of controlling vehicle display device, and computer-readable non-transitory storage medium
    Patent number: 11135970
    Abstract: A vehicle display device mounted on a vehicle and configured to display an image to an outside of the vehicle includes: a self-luminous display unit configured to display an image to the outside of the vehicle by emitting light emitted from a light source to the outside of the vehicle; a reflective display unit configured to display an image to the outside of the vehicle by reflecting light from the outside of the vehicle; an information acquisition unit configured to acquire environment information indicating an environment outside the vehicle; and a controller configured to switch between image display by the self-luminous display unit and image display by the reflective display unit based on the acquired environment information.
    Type: Grant
    Filed: May 9, 2018
    Date of Patent: October 5, 2021
    Assignee: KOITO MANUFACTURING CO., LTD.
    Inventors: Masaya Shido, Toru Ito
  • Array substrate and fabrication method thereof, and display device
    Patent number: 11137652
    Abstract: An array substrate and a fabrication method thereof, and a display device are provided. In the array substrate the pixel units includes common electrode, and the common electrodes of adjacent pixel units in the column direction is electrically connected through a first connection portion; the first signal line is located between the adjacent pixel units in the column direction. A total area of the first connection portion between the common electrodes of every two of the pixel units overlapping with the first signal line is a first overlapping area, at least one end of the first signal line is a first signal input end, and the first overlapping areas decrease as minimum distances from the first connection portions to the first signal input end increase in the row direction.
    Type: Grant
    Filed: October 19, 2017
    Date of Patent: October 5, 2021
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., HEFEI BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Kui Gong, Xianxue Duan, Dezhi Xu
  • Display apparatus having reliable pads
    Patent number: 11138919
    Abstract: A display apparatus includes a first signal pad and a second signal pad on a substrate. The first signal pad receives a first voltage. The second signal pad receives a second voltage less than the first voltage. The at least one conductive pad is between the first signal pad and the second signal pad and receives an alternating current voltage.
    Type: Grant
    Filed: April 9, 2020
    Date of Patent: October 5, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventor: Hyunuk Oh
  • LED driving apparatus having mitigated common impedance effect
    Patent number: 11138922
    Abstract: The present specification discloses a light-emitting diode (LED) driving apparatus in which a voltage drop phenomenon due to a common impedance is mitigated. In the LED driving apparatus according to the present specification, a circuit is configured by combining N-type metal-oxide-semiconductor (NMOS) transistors or P-type MOS (PMOS) transistors such that a positive power source or a negative power source is not connected to a source terminal of a metal oxide semiconductor field-effect transistor (MOSFET). To this end, it is possible to eliminate common impedance effects on the positive power source or the negative power source.
    Type: Grant
    Filed: November 12, 2019
    Date of Patent: October 5, 2021
    Assignee: SAPIEN SEMICONDUCTORS INC.
    Inventors: Jae Hoon Lee, Jin Woong Jang
  • Display device, source drive circuit and display system
    Patent number: 11132930
    Abstract: Disclosed is a display device, a source driving circuit and a display system, the source driving circuit (2200) comprises a plurality of source driving units (2210); a power supply line used for supplying a power supply voltage (VSP), and a plurality of power supply nodes are distributed on the power supply line, each source driving unit is connected to a corresponding power supply node so as to receive the power supply voltage. The source driving circuit further comprises an equalization line, having a receiver end for receiving an equalizing voltage, when a first enable signal is active, the equalization line provides the equalizing voltage to each source driving unit, and when the first enable signal is not active, the equalization line stop receiving the equalizing voltage, and at least a portion of the equalization line can be connected in parallel to at least a portion of the power supply line.
    Type: Grant
    Filed: August 22, 2018
    Date of Patent: September 28, 2021
    Assignee: CHIPONE TECHNOLOGY (BEIJING) CO., LTD.
    Inventors: Zhaocheng Wu, Jun Zhu
  • Electronic device
    Patent number: 11132026
    Abstract: An electronic device includes a host, a driving mechanism, a main display, and an auxiliary display. The main display is connected to the host through the driving mechanism. The auxiliary display is located between the host and the main display. The auxiliary display has a pivoting end and a movable end, the pivoting end is pivotally connected to the host, and the movable end is connected to the driving mechanism. The main display is configured to be folded or unfolded with respect to the host and synchronously drive the auxiliary display to ascend or descend through the driving mechanism.
    Type: Grant
    Filed: May 21, 2020
    Date of Patent: September 28, 2021
    Assignee: Acer Incorporated
    Inventors: Yi-Hsuan Yang, Cheng-Nan Ling, Wu-Chen Lee, Chia-Bo Chen
  • Gamma voltage generating circuit and display driving device including the same
    Patent number: 11127365
    Abstract: A gamma voltage generating circuit includes a gamma buffer configured to output a gamma voltage, a first gamma line and a second gamma line providing an output path of the gamma voltage, an output selecting unit configured to connect an output terminal of the gamma buffer to one of the first gamma line and the second gamma line, and an output resistor unit having a first resistor connected to the first gamma line and a second resistor connected to the second gamma line. The second resistor has a resistance value different from that of the first resistor.
    Type: Grant
    Filed: November 26, 2018
    Date of Patent: September 21, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jee Hwal Kim, Ki Ho Kong, In Suk Kim
  • Method of obtaining overdriving data of a display device capable of providing a substantially uniform charging rate, method of operating a display device, and display device
    Patent number: 11120715
    Abstract: A method of obtaining overdriving data includes providing a first data voltage corresponding to a current line reference gray level to a second pixel for first and second data writing times for first and second pixels in a first frame, measuring first luminance based on the first data voltage, applying a second data voltage corresponding to a previous line reference gray level for the first data writing time in a second frame, providing a third data voltage of an overdriving voltage corresponding to a predicted overdriving gray level added to the first data voltage for the second data writing time in the second frame, measuring second luminance based on the third data voltage, and determining an overdriving value corresponding to a reference gray level pair of the current and the previous line reference gray level as the predicted overdriving gray level when the first and second luminance are the same.
    Type: Grant
    Filed: April 20, 2020
    Date of Patent: September 14, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sangan Kwon, Kyunho Kim, Sungjin Kim, Subin Park, Yeseul Lee
  • Liquid crystal display device
    Patent number: 11114049
    Abstract: A liquid crystal display device includes: a display unit including a first liquid crystal panel and a second liquid crystal panel disposed on a rear surface side of the first liquid crystal panel; and an image processor that generates first and second output image signals respectively output to the first and second liquid crystal panels based on an input image signal. The image processor includes; a distributor that distributes the input image signal into first and second distribution image signals used to generate the first and second output image signals, respectively; and a first unevenness corrector that generates the first output image signal by performing first unevenness correction to prevent display unevenness of the display unit on the first distribution image signal output from the distributor, and outputs the generated first output image signal to the first liquid crystal panel.
    Type: Grant
    Filed: November 21, 2019
    Date of Patent: September 7, 2021
    Assignees: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD., PASONA KNOWLEDGE PARTNER INC.
    Inventors: Satoshi Hirotsune, Yasuyuki Suga, Tatsuo Itoman
  • Anti-peeping circuit, driving method thereof, and display device
    Patent number: 11114053
    Abstract: An anti-peeping circuit for a display panel, a driving method thereof, and a display device. The anti-peeping circuit includes a waveform generator. The waveform generator is connected to an anti-peeping electrode of the display panel, and the waveform generator is configured to generate an anti-peeping signal and output the anti-peeping signal to the anti-peeping electrode of the display panel.
    Type: Grant
    Filed: January 4, 2019
    Date of Patent: September 7, 2021
    Assignees: BEIJING BOE DISPLAY TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xinle Wang, Wei Sun, Wenchao Han, Zhaohui Meng, Lianghao Zhang, Yilin Feng, Xiaoyang Shen
  • Display device
    Patent number: 11112667
    Abstract: A display device includes: a liquid crystal layer between a first substrate and a second substrate; a contact region electrically connecting one of horizontal gate lines to one of vertical signal lines; a plurality of data lines; and a plurality of pixels including transistors that are electrically connected to the horizontal gate lines and the data lines, wherein: the plurality of pixels includes a kickback pixel defined as a pixel that is affected by a kickback voltage caused by the one vertical signal line, and a normal pixel defined as a pixel that is less affected by the kickback voltage caused by the one vertical signal line than the kickback pixel, and the liquid crystal layer in the kickback pixel having a first cell gap, and the liquid crystal layer in the normal pixel having a second cell gap greater than the second cell gap.
    Type: Grant
    Filed: August 27, 2020
    Date of Patent: September 7, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventor: Jung Hwan Hwang
  • Viewing angle control unit, substrate assembly of the viewing angle control unit, and display assembly
    Patent number: 11112627
    Abstract: Disclosed herein are a viewing angle control unit, a substrate assembly of the viewing angle control unit, and a display assembly. The viewing angle control unit includes two substrate assemblies, a liquid crystal (LC) component disposed between the substrate assemblies, and a seal component interconnecting the substrate assemblies and surrounding the LC component. At least one of the substrate assemblies includes a transparent base substrate, a transparent electrode layer disposed on the transparent base substrate, and an alignment film disposed on the transparent electrode layer. The transparent electrode layer has a groove extending along at least part of the seal component, so as to mitigate excessive spreading of a material of the alignment film during manufacturing of the viewing angle control unit. The display assembly includes the viewing angle control unit.
    Type: Grant
    Filed: February 18, 2020
    Date of Patent: September 7, 2021
    Assignee: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
    Inventors: Masahiro Ishii, Tetsuo Fukami, Yukinori Kayama
  • Display apparatus and method of driving the same
    Patent number: 11107435
    Abstract: A display apparatus includes a display panel, a position detector, a driving controller, a gate driver and a data driver. The display panel is configured to display an image. The position detector is configured to determine a position of a user. The driving controller is configured to generate an overdriving value according to a grayscale value of previous frame data and a grayscale value of present frame data. The gate driver is configured to output gate signals to the display panel. The data driver is configured to output data voltages to the display panel based on the overdriving value.
    Type: Grant
    Filed: October 28, 2019
    Date of Patent: August 31, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jongman Kim, Yong-Bum Kim, Dong-Hyun Yeo, Byung Kil Jeon, Woojung Jung
  • Method of preventing false output of GOA circuit of a liquid crystal display panel
    Patent number: 11107430
    Abstract: The present application discloses a method for preventing false output of a GOA circuit in a display panel. The method includes providing N clock signals respectively to N GOA units in each of M groups of GOA units cascaded in series. The N clock signals are outputted time-sequentially from a 1st clock signal to a N-th clock signal. The method additionally includes counting a first total number of pulses of the 1st clock signal and a second total number of pulses of the N-th clock signal, comparing each of them to M, and generating a reset signal based on a determination that at least one of the first total number of pulses and the second total number of pulses is smaller than M. The method furthermore includes releasing residual charges of the GOA circuit without outputting any gate-driving signal for a duration of time.
    Type: Grant
    Filed: June 7, 2017
    Date of Patent: August 31, 2021
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., Hefei Xinsheng Optoelectronics Technology Co., Ltd.
    Inventors: Yuanyuan Liu, Jianjun Wang, Hongjun Wang, Min Wang, Rui Ma
  • Electro-optical device, driving method for electro-optical device, and electronic apparatus
    Patent number: 11107442
    Abstract: An electro-optical device includes a plurality of scan lines, k signal lines, a pixel that is disposed corresponding to each of intersections between the plurality of scan lines and the k signal lines, an image signal circuit configured to sequentially supply the image signal to each of the k signal lines in a horizontal scanning period, a pre-charge circuit configured to supply, in the horizontal scanning period and in a prescribed order, a pre-charge signal to a signal line of the k signal lines to which the image signal circuit has not supplied the image signal yet; and a control circuit configured to set a first supply period of the k supply periods, during which the image signal is sequentially supplied to each of the k signal lines, to be longer than prescribed supply periods excluding the first supply period of the k supply periods.
    Type: Grant
    Filed: May 23, 2019
    Date of Patent: August 31, 2021
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Shinsuke Fujikawa
  • Electro-optic displays with resistors for discharging remnant charges
    Patent number: 11107425
    Abstract: An electro-optic display having a plurality of display pixels, each of the plurality of display pixels comprising: a pixel electrode for driving the display pixel; a thin film transistor (TFT) coupled to the pixel electrode for transmitting waveforms to the pixel electrode; a resistor coupled to the pixel electrode for discharging remnant charges from the display subsequent to the TFT being de-activated; and a storage capacitor coupled to the pixel electrode and placed in parallel with the resistor. A time constant of a circuit comprising the pixel electrode, the resistor, and the storage capacitor is larger than a driving frame time of the electro-optic display.
    Type: Grant
    Filed: September 25, 2020
    Date of Patent: August 31, 2021
    Assignee: E Ink Corporation
    Inventors: Pierre-Yves Emelie, Teck Ping Sim, Kenneth R. Crounse, Karl Raymond Amundson, Chih-Hsiang Ho
  • Data transfer circuit, data transfer system, and method for controlling data transfer circuit
    Patent number: 11108706
    Abstract: The number of wiring lines is reduced in a system that transfers data between different power domains. A transmission side buffer starts, at a start timing, processing of sequentially selecting a plurality of transmission side buffer areas and holding transmission data in the areas selected over a predetermined time. A voltage conversion unit performs voltage conversion on the transmission data held and outputs the transmission data as received data. A reception side buffer starts, when a delay time less than the predetermined time has elapsed from the start timing, processing of sequentially selecting a plurality of reception side buffer areas and holding the received data in the areas selected over the predetermined time.
    Type: Grant
    Filed: March 31, 2017
    Date of Patent: August 31, 2021
    Assignee: Sony Corporation
    Inventor: Toshiaki Shino
  • System and method for a six-primary wide gamut color system
    Patent number: 11100838
    Abstract: Systems and methods for a multi-primary color system for display. A multi-primary color system increases the number of primary colors available in a color system and color system equipment. Increasing the number of primary colors reduces metameric errors from viewer to viewer. A six-primary color system includes Red, Green, Blue, Cyan, Yellow, and Magenta primaries. The systems of the present invention maintain compatibility with existing color systems and equipment and provide systems for backwards compatibility with older color systems.
    Type: Grant
    Filed: February 23, 2021
    Date of Patent: August 24, 2021
    Assignee: BAYLOR UNIVERSITY
    Inventor: Gary B. Mandle
  • Display apparatus and method of driving display panel for reducing power consumption and enhancing display quality when displaying static images
    Patent number: 11100863
    Abstract: A display apparatus configured to adjust a driving frequency of a display panel by including a driving controller configured to: determine a low driving frequency corresponding to input image data; determine a plurality of compensation frequencies greater than the low driving frequency; and insert a plurality of compensation frequency frames having the compensation frequencies prior to a low driving frequency frame having the low driving frequency in a low frequency driving mode.
    Type: Grant
    Filed: January 10, 2020
    Date of Patent: August 24, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Geunjeong Park, Eunho Lee
  • Array substrate and display device
    Patent number: 11092865
    Abstract: An array substrate having a display region and a non-display region, includes signal lines at least located in the display region, signal line leads located in the non-display region, connection portions located in the non-display region for coupling the signal lines to the signal line leads, and the signal lines and the signal line leads are two separate portions.
    Type: Grant
    Filed: November 16, 2018
    Date of Patent: August 17, 2021
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Hongfei Cheng
  • Display device and display system
    Patent number: 11094269
    Abstract: A display device includes: a liquid crystal display panel including a liquid crystal between two substrates; and first, second, and third light sources emitting light in different colors. A light emission period includes a first light emission period in which luminance of the first light source is higher than luminance of the second and third light sources, and at least one of the second and third light sources emits light, a second light emission period in which the luminance of the second light source is higher than the luminance of the first and the third light sources, and at least one of the first and third light sources emits light, and a third light emission period in which the luminance of the third light source is higher than the luminance of the first and second light sources, and at least one of the first and second light sources emits light.
    Type: Grant
    Filed: January 29, 2020
    Date of Patent: August 17, 2021
    Assignee: Japan Display Inc.
    Inventor: Hisashi Tomitani
  • Afterimage compensator and display device having the same
    Patent number: 11094275
    Abstract: An afterimage compensator and a display device having the same are disclosed, and the afterimage compensator includes an image analyzer configured to determine an amount of image variation based on a change of image data, and an image shifter configured to adjust a shift interval, which is an interval between time points at which an image is shifted, according to the amount of image variation.
    Type: Grant
    Filed: November 4, 2019
    Date of Patent: August 17, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jae Hoon Lee, Seung Ho Park, Hee Sook Park, Kyoung Ho Lim
  • Shift register unit and driving method thereof, gate driver, display panel and display device
    Patent number: 11081033
    Abstract: A shift register unit includes: an input terminal, a first voltage terminal, a second voltage terminal, a first clock terminal, a second clock terminal and an output terminal, as well as an input circuit, a control circuit and an output circuit. In addition, a method for driving the shift register unit, a gate driver composed of the shift register units, a display panel comprising the gate driver and a display device comprising the display panel are also disclosed.
    Type: Grant
    Filed: May 21, 2019
    Date of Patent: August 3, 2021
    Assignees: CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Xiaohai Chen
  • Multi-panel liquid crystal display device and method for displaying image therein
    Patent number: 11074877
    Abstract: A liquid crystal (LC) display device includes a first display panel, a second display panel, and an image processor. The image processor generates first image data and second image data that correspond to a first image and a second image for display on the first display panel and the second display panel, respectively. The image processor includes a first image data decision unit that decides the first image data, a filter that decides a correction factor, and a second image data decision unit that decides the second image data based on smoothed image data and the correction factor. A method for displaying an image in a LC display device with a first display panel and a second display panel includes determining first image data based on smoothed input image data, and determining second image data based on the smoothed input image data and a correction factor.
    Type: Grant
    Filed: January 23, 2020
    Date of Patent: July 27, 2021
    Assignees: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD., PASONA KNOWLEDGE PARTNER INC.
    Inventors: Hideyuki Nakanishi, Katsuhiro Kikuchi, Takenobu Nishiguchi, Tatsuo Itoman
  • Viewing system, display device, stage installation, and polymerizable liquid crystal composition
    Patent number: 11067252
    Abstract: The present invention provides a viewing system capable of providing varying visual effects with a simpler configuration. In addition, the present invention also provides a display device, a stage installation, and a polymerizable liquid crystal composition.
    Type: Grant
    Filed: April 1, 2019
    Date of Patent: July 20, 2021
    Assignee: FUJIFILM Corporation
    Inventors: Rie Takasago, Hiroshi Inada, Masaru Yoshikawa, Mitsuyoshi Ichihashi
  • Display device and display optimization method
    Patent number: 11067853
    Abstract: A display device and a display optimization method are disclosed. The display device includes a display screen configured to provide a first display region and a second display region; a first backlight member disposed within the first display region; a light guiding member, a second backlight member, and a camera disposed within the second display region; and a controller adjusting backlight-current of one of the first backlight member and the second backlight member according to a difference between two backlight-brightness levels which are measured within the first display region and the second display region until the two backlight-brightness levels are the same ones. Therefore, it can solve a problem of a visual difference within a display region in the prior art.
    Type: Grant
    Filed: June 30, 2020
    Date of Patent: July 20, 2021
    Assignee: Wuhan China Star Optoelectronics Technology Co., Ltd.
    Inventors: Xindong Mei, Shaojun Hou, Chao Wang, Guanghui Liu, Zhifu Li
  • Electro-optical device
    Patent number: 11062668
    Abstract: An electro-optical device includes first and second signal lines extending in first and second directions respectively on a component substrate; a pixel area disposed at a portion corresponding to an intersection of the first and second signal lines; a signal output circuit disposed outside the pixel area and outputs a driving signal to the first signal line and including circuit blocks arranged next to one another, wherein an outer peripheral edge of the pixel area has a curved or bent portion facing the signal output circuit, a first circuit block included in the circuit blocks is arranged along the curved or bent portion, and a second circuit block included in the circuit blocks and adjacent to the first circuit block is arranged so as to be displaced in the first direction from the first circuit block, and a lead-out area where the first and second circuit blocks are connected.
    Type: Grant
    Filed: June 19, 2020
    Date of Patent: July 13, 2021
    Assignee: Japan Display Inc.
    Inventors: Katsuya Anzai, Hideki Kawada, Hiroshi Matsuda, Yukitada Iwasaki
  • Circuit and method for common voltage feedback compensation and liquid crystal display device
    Patent number: 11062665
    Abstract: The invention provides a circuit and method for common voltage feedback compensation and LCD. The circuit comprises: a timing controller and a power management circuit, the timing controller and the power management circuit being electrically connected; the timing controller providing a corresponding preset feedback compensation value to the power management circuit under different images; the power management circuit comprising a common voltage compensation circuit and an adder, and the adder integrating the feedback compensation value and a feedback common voltage returned from a feedback point in a display panel through addition obtain an integration result, the common voltage compensation circuit obtaining a common voltage compensation signal based on the integration result and providing the common voltage compensation signal to the display panel.
    Type: Grant
    Filed: September 29, 2018
    Date of Patent: July 13, 2021
    Assignees: SHENZHEN CHINA STAR OPTOELECTRONICS, SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
    Inventor: Xianming Zhang
  • Display device
    Patent number: 11056667
    Abstract: A display device includes: a first base substrate which comprises a plurality of pixels; a pixel electrode on the first base substrate in each of the pixels and comprises a reflective film; an organic layer on the pixel electrode; and a common electrode on the organic layer, wherein the pixel electrode has a reflectance of 80% or more for light in a first wavelength range of 420 nm to 470 nm.
    Type: Grant
    Filed: November 26, 2019
    Date of Patent: July 6, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jung Ho Choi, Nam Su Kang, Yi Seul Kim, Heung Su Park, Hyun Shik Lee, Heun Seung Lee, Jae Hoon Hwang
  • Liquid crystal display device and driving method thereof
    Patent number: 11054682
    Abstract: A liquid crystal display device and a driving method thereof are provided. The driving circuit of the liquid crystal display device outputs a drive voltage applied between the first electrode and the second electrode of a sub-pixel of a display panel. When a transmittance of the sub-pixel is changed from a transmittance value to another transmittance value higher than the transmittance value in a first frame period, the drive voltage applied between the first electrode and the second electrode is lower than or equal to a target drive voltage corresponding to the another transmittance value in a front half period of the first frame period, the drive voltage is higher than the target drive voltage in a rear half period of the first frame period, and the drive voltage is equal to the target drive voltage in other frame periods after the first frame period.
    Type: Grant
    Filed: December 12, 2017
    Date of Patent: July 6, 2021
    Assignee: HKC CORPORATION LIMITED
    Inventor: Huailiang He
  • Image projection apparatus and its control method
    Patent number: 11057596
    Abstract: An image projection apparatus configured to project image light and to display a projection image includes a light modulation element driven according to an image signal and configured to modulate incident light to generate the image light, a shifter configured to shift a plurality of pixels of the projection image by changing an optical path of the image light, and a controller configured to control driving of the shifter. The controller changes a driving method of the shifter according to a frame rate of the image signal.
    Type: Grant
    Filed: December 23, 2019
    Date of Patent: July 6, 2021
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Yoshiyuki Okada, Ryohei Mitazaki
  • Electronic device capable of reducing peripheral circuit area
    Patent number: 11056064
    Abstract: A display panel includes a first shift register, a first demultiplexer, a plurality of first gate lines, and a plurality of rows of first sub-pixels. The first shift register outputs a first shift signal. The first demultiplexer is coupled to the first shift register and receives the first shift signal and outputs a plurality of first gate driving signals. The plurality of first gate lines receive the plurality of first gate driving signals. Each row of first sub-pixels is coupled to a corresponding first gate line of the plurality of first gate lines. The first sub-pixels of the same row emit light of a same color.
    Type: Grant
    Filed: October 28, 2019
    Date of Patent: July 6, 2021
    Assignee: InnoLux Corporation
    Inventors: Yi-Shiuan Cherng, Chia-Hao Tsai, Chang-Chiang Cheng, Yung-Hsun Wu
  • Sensors and electronic devices
    Patent number: 11038068
    Abstract: A photoelectric conversion device may include one or more pixel electrodes and an opposed electrode and a photoelectric conversion layer between the one or more pixel electrodes and the opposed electrode. The photoelectric conversion layer may be configured to absorb light of at least one part in a wavelength spectrum and to convert the absorbed light into an electrical signal. Each pixel electrode has an upper surface facing the photoelectric conversion layer, a side surface, and a non-angulated edge where the upper surface and the side surface meet.
    Type: Grant
    Filed: July 16, 2019
    Date of Patent: June 15, 2021
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sung Young Yun, Kyung Bae Park, Sung Jun Park, Gae Hwang Lee, Yong Wan Jin, Chul Joon Heo
  • Display panel and method for manufacturing the same
    Patent number: 11037994
    Abstract: A display panel and a method for manufacturing the same are disclosed. The display panel includes: a display area having a plurality of first pixel units and a plurality of first transparent portions, the first transparent portions being configured such that external light is transmitted from one side of the display panel to the other side of the display panel through the first transparent portions, wherein at least two first pixel units are spaced apart by one or more first transparent portions.
    Type: Grant
    Filed: April 24, 2019
    Date of Patent: June 15, 2021
    Assignees: CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Kuo Sun, Mingche Hsieh, Yang Wang
  • Gate driving apparatus for pixel array and driving method therefor
    Patent number: 11037503
    Abstract: Disclosed are a gate driving apparatus for a pixel array and a driving method therefor. The pixel array includes N gate lines. The gate driving apparatus includes: a plurality of gate drivers, wherein the N gate lines are divided into a plurality of groups, each group includes a plurality of gate lines, each gate driver corresponds to the plurality of groups on a one-to-one basis, and is used for generating a gate driving signal for the plurality of gate lines in the group corresponding thereto; and a driver control module which is used for generating a plurality of driver control signals corresponding to the plurality of gate drivers on a one-to-one basis, and state switching between any two driver control signals has at least a difference of first time, wherein under control of the driver control signals, the gate drivers are switched from first state to second state in sequence.
    Type: Grant
    Filed: March 18, 2020
    Date of Patent: June 15, 2021
    Assignees: CHONGQING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO.. LTD.
    Inventors: Lijun Xiao, Yihjen Hsu, Shuai Hou, Xu Lu, Fei Shang
  • Gate driving circuit having stabilization
    Patent number: 11037517
    Abstract: A display device to display an image during frame intervals, and to display a blank image during a blank interval defined between the frame intervals, includes: a gate driving circuit including a plurality of stages, an ith stage (i is an integer greater than or equal to 2) from among the plurality of stages including a clock terminal to receive a clock signal, wherein the clock signal swings between a first clock voltage and a second clock voltage smaller than the first clock voltage during a normal interval corresponding to each of the frame intervals, and the clock signal is changed to a voltage lower than the second clock voltage during a stabilization interval corresponding to the blank interval.
    Type: Grant
    Filed: October 28, 2019
    Date of Patent: June 15, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Junghwan Hwang, Chanwook Shim, Youngchul Jo
  • Display device
    Patent number: 11036086
    Abstract: A display device includes: a display panel; a driver IC that outputs a driving signal to the display panel; a flexible substrate on which the driver IC is mounted; a first frame that supports the display panel from a side of a light source; and a second frame that supports the light source while being provided independently of the first frame. The first frame includes a metallic frame unit which is opposite to the driver IC from the side of the light source.
    Type: Grant
    Filed: August 28, 2019
    Date of Patent: June 15, 2021
    Assignees: Panasonic Liquid Crystal Display Co., Ltd., Pasona Knowledge Partner Inc.
    Inventors: Yusuke Katagiri, Masaki Tsubokura