Electroluminescent Patents (Class 345/76)
  • Patent number: 11521559
    Abstract: The present disclosure relates to a display panel and a driving method thereof. The display panel includes a source driving circuit and a pixel driving circuit. The source driving circuit includes a DAC power amplifier, and a switch unit. The DAC is configured to convert a digital data signal into an analog data signal; the power amplifier is configured to receive the analog data signal and improve a driving capability of the analog data signal; the switch unit is connected to the DAC, the power amplifier, and a control signal terminal, and is configured to connect the DAC to the power amplifier in response to a signal of the control signal terminal. The pixel driving circuit includes a data signal terminal; an output terminal of the power amplifier is connected to the data signal terminal, and is configured to input the analog data signal with improved driving capability to the data signal terminal.
    Type: Grant
    Filed: March 27, 2020
    Date of Patent: December 6, 2022
    Assignee: Beijing BOE Technology Development Co., Ltd.
    Inventors: Xiao Bai, Shengji Yang, Pengcheng Lu
  • Patent number: 11521550
    Abstract: A data current generation circuit includes a data voltage generation circuit, a data voltage transmission control circuit, a compensation control circuit, a first capacitor, a first transistor and a reference voltage writing circuit. The data voltage transmission control circuit transmits a data voltage from the data voltage generation circuit to a first electrode of the first transistor; the compensation control circuit is electrically connected to a gate and a second electrode of the first transistor separately and associates a threshold voltage of the first transistor with the gate of the first transistor; the first capacitor stores a voltage of the gate of the first transistor; the reference voltage writing circuit is electrically connected to the first electrode of the first transistor and a first reference voltage output terminal separately; and the second electrode of the first transistor serves as an output of the data current generation circuit.
    Type: Grant
    Filed: November 15, 2021
    Date of Patent: December 6, 2022
    Assignee: SEEYA OPTRONICS CO., LTD.
    Inventors: Ping-lin Liu, Haodong Zhang
  • Patent number: 11514844
    Abstract: A pixel drive circuit includes a data write sub-circuit, an input and read sub-circuit, a drive sub-circuit, and a first output control sub-circuit. The data write sub-circuit is configured to transmit data signals input from a first data voltage terminal at different times to a first node. The input and read sub-circuit is configured to: transmit a signal of a signal transmission terminal to a second node in a write period, and transmit an electrical signal of the second node to the signal transmission terminal in a threshold voltage read period. The drive sub-circuit is configured to output a drive signal. The first output control sub-circuit is configured to: be coupled to an element to be driven, and transmit the drive signal output by the drive sub-circuit to the element to be driven.
    Type: Grant
    Filed: September 10, 2020
    Date of Patent: November 29, 2022
    Assignee: Beijing BOE Technology Development Co., Ltd.
    Inventors: Li Xiao, Minghua Xuan, Dongni Liu, Jing Liu, Qi Qi, Haoliang Zheng, Zhenyu Zhang, Liang Chen, Hao Chen
  • Patent number: 11515509
    Abstract: A virtual image display device including a display panel including a plurality of pixels and configured to display an image, a window disposed on the display panel, and a multi-viewpoint layer provided between the display panel and the window, and including a plurality of lenses.
    Type: Grant
    Filed: February 26, 2020
    Date of Patent: November 29, 2022
    Assignee: Samsung Display Co., LTD.
    Inventors: Soomin Baek, Jaejoong Kwon, Jiwon Lee, SuJung Huh
  • Patent number: 11515512
    Abstract: A portable information handling system integrates a display film having OLED pixels to a housing with a graphene foam having graphene particles disposed in an intermediary material with varied orientations that promote thermal transfer from the display film. For example, graphene particles disposed in a silicon resin to form the foam couples between a portable housing and a display film to transfer thermal energy to the portable housing from the display film.
    Type: Grant
    Filed: November 18, 2020
    Date of Patent: November 29, 2022
    Assignee: Dell Products L.P.
    Inventors: Deeder M. Aurongzeb, Jong Seo Lee, Travis C. North
  • Patent number: 11514842
    Abstract: A display panel is provided. The display panel includes a plurality of light-emitting diodes constituting a plurality of sub-pixels of the display panel and configured to be divided into a plurality of groups; and a plurality of LED driving circuits configured to: receive a PWM data voltage in a scanning period; and based on the PWM data voltage, drive the plurality of light-emitting diodes by providing drive current to the plurality of light-emitting diodes for a time corresponding to the PWM data voltage in an emission period, wherein each of the plurality of LED driving circuits is configured to be connected to light-emitting diodes included in respective groups of the plurality of groups, and drive the light-emitting diodes of the respective groups.
    Type: Grant
    Filed: February 3, 2021
    Date of Patent: November 29, 2022
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Youngki Jung, Tetsuya Shigeta, Jinho Kim, Chulgyu Jung
  • Patent number: 11514855
    Abstract: A display device includes a pixel, wherein the pixel includes a light emitting element, a first transistor connected to a first power line and the light emitting element and controlled by a voltage of a first node, a second transistor connected to a data line and the first transistor and controlled by an i-th scan signal, a third-first transistor connected to the first transistor and a second node and controlled by a first control signal, a third transistor connected to the second node and the first node and controlled by a second control signal, and a dummy transistor including a first electrode receiving a reference voltage, a second electrode connected to the second node, and a control electrode connected to an emission line.
    Type: Grant
    Filed: March 31, 2021
    Date of Patent: November 29, 2022
    Inventors: Jaekeun Lim, Hongsoo Kim, Jinyoung Roh, Sehyuk Park, Hyojin Lee
  • Patent number: 11513644
    Abstract: Various embodiments provide a thin and lightweight organic light-emitting display device having a touch sensor. The organic light-emitting display device having a touch sensor includes a touch-sensing line and a touch-driving line disposed on an encapsulation stack so as to overlap each other. The touch-sensing line and the touch-driving line overlap each other in a location in which an organic touch dielectric film and an inorganic touch dielectric film are disposed therebetween, thereby preventing the generation of spots in the event of degeneration of the organic touch dielectric film and preventing damage to the organic touch dielectric film.
    Type: Grant
    Filed: September 3, 2021
    Date of Patent: November 29, 2022
    Assignee: LG Display Co., Ltd.
    Inventors: Jeong-Gi Yun, Go-Eun Lim
  • Patent number: 11508289
    Abstract: The present disclosure provides a pixel driving circuit, a method of driving the same and a display device. The pixel driving circuit includes a light-emission time control sub-circuitry, a first energy storage sub-circuitry, a first resetting sub-circuitry, a first light-emission control sub-circuitry, a time control data write-in sub-circuitry and a data control sub-circuitry. The time control data write-in sub-circuitry controls a time control data line to be electrically connected to a second end of the first energy storage sub-circuitry under the control of a first gate driving signal. The light-emission time control sub-circuitry controls a first end of the light-emission time control sub-circuitry to be electrically connected to a second end of the light-emission time control sub-circuitry.
    Type: Grant
    Filed: November 29, 2019
    Date of Patent: November 22, 2022
    Assignee: BEIJING BOE TECHNOLOGY DEVELOPMENT CO., LTD.
    Inventors: Minghua Xuan, Xiaochuan Chen, Dongni Liu
  • Patent number: 11508290
    Abstract: A pixel according to some embodiments includes a light source unit, a first transistor coupled between a first power source and a first node, and configured to control a driving current applied to the light source unit, a first bias transistor coupled between a first bias power source and a gate electrode of the first transistor, and a second bias transistor coupled between a second bias power source and a second node that is electrically coupled to an anode of the light source unit, wherein the first bias transistor and the second bias transistor are configured to be turned on during a first period before a data voltage is applied among one frame, and wherein the second bias transistor is configured to be turned on at least once during a second period after the data voltage is applied among the one frame.
    Type: Grant
    Filed: May 24, 2021
    Date of Patent: November 22, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Yun Ki Baek, Oh Jo Kwon, Bong Hyun You, Seok Ha Hong
  • Patent number: 11508301
    Abstract: An embodiment of the present disclosure provides a pixel circuit, including: a reference writing circuit configured to write a reference voltage to a control electrode of a driving transistor; a data writing circuit configured to write a data voltage to a threshold compensation circuit; the threshold compensation circuit configured to acquire a threshold voltage of the driving transistor, and to supply a first control voltage to the control electrode of the driving transistor and supply a second control voltage to a second electrode of the driving transistor; a reset circuit configured to write a reset voltage to the pixel circuit; and the driving transistor having a first electrode electrically coupled to a first operating voltage terminal and the second electrode electrically coupled to a first electrode of a light emitting element, and configured to drive the light emitting element to emit light.
    Type: Grant
    Filed: January 19, 2021
    Date of Patent: November 22, 2022
    Assignee: BEIJING BOE TECHNOLOGY DEVELOPMENT CO., LTD.
    Inventor: Tian Dong
  • Patent number: 11508320
    Abstract: A pixel of an OLED display device includes a first capacitor, a second capacitor, a first transistor configured to generate a driving current, a second transistor configured to transfer a data voltage to a first node, a third transistor configured to diode-connect the first transistor, a fourth transistor configured to transfer an initialization voltage to the second node, a fifth transistor configured to transfer a reference voltage to the first node, a sixth transistor configured to couple a drain of the first transistor and an anode of an organic light emitting diode, a seventh transistor configured to transfer the initialization voltage to the anode of the organic light emitting diode, an eighth transistor configured to transfer the initialization voltage to the drain of the first transistor, and the organic light emitting diode.
    Type: Grant
    Filed: September 10, 2021
    Date of Patent: November 22, 2022
    Inventors: Jihye Kim, Jakyoung Jin, Yu-Chol Kim, Jin-Wook Yang
  • Patent number: 11508292
    Abstract: According to one embodiment, a display device includes a first power supply line, a second power supply line, a reset line, pixels, gate lines, control wiring lines, source lines, a first driver and a second driver. Each of the pixels includes a drive transistor, a light emitting element, a pixel switch, a storage capacitor and a reset switch. The reset switch is connected between the reset line and a gate electrode of the drive transistor, and switched between an ON state and an OFF state by a second control signal provided via a corresponding control wiring line among the control wiring lines.
    Type: Grant
    Filed: August 20, 2021
    Date of Patent: November 22, 2022
    Assignee: JAPAN DISPLAY INC.
    Inventors: Tsutomu Harada, Tadafumi Ozaki, Kazunari Tomizawa
  • Patent number: 11501707
    Abstract: A pixel circuit includes: pixel units, wherein each pixel unit includes a light-emitting element and a pixel driving circuit, the pixel driving circuit and the light-emitting element are electrically connected to a first node; a first compensation sub-circuit electrically connected to each pixel driving circuit, and configured to provide an initialization signal to the pixel driving circuit, obtain a voltage at the first node when the light-emitting element emits light via the pixel driving circuit, and generate a compensation data signal based on the voltage at the first node; and a second compensation sub-circuit electrically connected to each pixel driving circuit and configured to keep the voltage at the first node within a set operating voltage range of the light-emitting element. The pixel driving circuit is further configured to initialize the first node based on the initialization signal, and use the compensation data signal to drive the light-emitting element.
    Type: Grant
    Filed: March 31, 2020
    Date of Patent: November 15, 2022
    Assignees: CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BEIJING BOE TECHNOLOGY DEVELOPMENT CO., LTD.
    Inventors: Ziyang Yu, Zhu Wang, Sheng Hu, Tianliang Liu, Guo Liu
  • Patent number: 11501710
    Abstract: A display device includes: a display portion including a plurality of pixel circuits arranged in a matrix; and a gate driver that outputs one driving pulse for each horizontal cycle. The plurality of pixel circuits each include subpixel circuits each including a light emitting element, a driving transistor that supplies a current to the light emitting element, a write transistor, a reference transistor, and an initialization transistor. The one driving pulse is input per vertical cycle from the gate driver to the initialization transistor included in each of a plurality of rows in the plurality of pixel circuits, and the one driving pulse input to the initialization transistors included in mutually different rows among the plurality of rows is input to each of the write transistor and the reference transistor, the mutually different rows being other than a row in which the write transistor and the reference transistor are included.
    Type: Grant
    Filed: January 11, 2022
    Date of Patent: November 15, 2022
    Assignee: JOLED INC.
    Inventor: Masanori Ohara
  • Patent number: 11501720
    Abstract: A display panel comprises a reset module, a data-writing module, a driving transistor, a light-emitting control module, a first memory module and a first signal module. The reset module is configured to provide a reset signal to an anode of a light-emitting element through a light-emitting control module. The first signal module is configured to provide a data voltage signal to the data-writing module in a data-writing stage to write the data voltage signal to a gate electrode of the driving transistor and a first end of the first memory module through the data-writing module and provide a data current signal to the driving transistor in the data-writing stage to compensate a threshold voltage of the driving transistor to the second node. The light-emitting control module controls a driving current generated by the driving transistor to flow into a light-emitting element to drive the light-emitting element to emit light.
    Type: Grant
    Filed: July 30, 2021
    Date of Patent: November 15, 2022
    Assignee: SeeYA Optronics Co., Ltd.
    Inventors: Ping-Lin Liu, Tong Wu
  • Patent number: 11495184
    Abstract: A control method of an electronic ink screen includes: outputting a first color driving signal to pixel(s) expected to display a first color in the electronic ink screen. The first color driving signal includes a first dither signal and a first color first pull-up signal in adjacent periods. The first dither signal includes a first rectangular wave signal, a first electric field cancellation signal and a first constant voltage signal. The first constant voltage signal is configured to drive first color charged particles in the pixel(s) expected to display the first color to move toward a side proximate to a display surface of the electronic ink screen, and the first color first pull-up signal is configured to drive the first color charged particles in the pixel(s) expected to display the first color to move toward the side proximate to the display surface of the electronic ink screen.
    Type: Grant
    Filed: September 29, 2020
    Date of Patent: November 8, 2022
    Assignees: Chongqing BOE Smart Electronics System Co., Ltd., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Lichun Chen, Lianghui Shi, Heng Zheng
  • Patent number: 11488505
    Abstract: An embodiment is disclosed that makes it possible to reduce the area of a digital-to-analog converter circuit by interpolating one reference voltage and generating a plurality of gamma voltages.
    Type: Grant
    Filed: December 2, 2020
    Date of Patent: November 1, 2022
    Assignee: SILICON WORKS CO., LTD.
    Inventors: Taiming Piao, Young Bok Kim, Young Tae Kim, Won Kim
  • Patent number: 11490481
    Abstract: A pulse width modulation (PWM) driver and an operation method thereof are provided. The PWM driver includes a PWM generating circuit and multiple driving channels. The PWM generating circuit generates multiple PWM signals. The driving channels drive multiple light emitting elements of a light emitting element array. Each of the driving channels includes a PWM selection circuit. The PWM selection circuits are coupled to the PWM generating circuit to receive the PWM signals. Each of the PWM selection circuits selects a PWM signal from the PWM signals according to corresponding sub-pixel data. The selected PWM signal is output to at least one corresponding light emitting element among the light emitting elements.
    Type: Grant
    Filed: March 30, 2021
    Date of Patent: November 1, 2022
    Assignee: Novatek Microelectronics Corp.
    Inventors: Jen-Chung Chang, Yi-Nung Hu
  • Patent number: 11485878
    Abstract: An optically clear adhesive film includes at least one first adhesive layer and at least one second adhesive layer that are stacked. A modulus of each first adhesive layer is less than a modulus of each second adhesive layer, and a glass transition temperature of the first adhesive layer is less than a glass transition temperature of the second adhesive layer.
    Type: Grant
    Filed: October 21, 2020
    Date of Patent: November 1, 2022
    Assignee: Beijing BOE Technology Development Co., Ltd.
    Inventors: Shuang Du, Paoming Tsai
  • Patent number: 11482582
    Abstract: The present disclosure provides a display panel and an electronic device. The display panel includes: a base substrate; and a pixel arranged on the base substrate, wherein the pixel includes a first sub-pixel including a first sub-pixel drive circuit and a first light emitting element and a second sub-pixel including a second sub-pixel drive circuit and a second light emitting element, the first and second sub-pixel drive circuits are arranged sequentially in a first direction and extend in a second direction, wherein the first light emitting element includes a first anode, the second light emitting element includes a second anode, an orthographic projection of each of the first and the second anodes partially covers an orthographic projections of the first and second sub-pixel drive circuits, and the orthographic projection of the first anode does not overlap the orthographic projection of the second anode.
    Type: Grant
    Filed: May 15, 2020
    Date of Patent: October 25, 2022
    Assignees: Hefei BOE Joint Technology Co., Ltd., Beijing BOE Technology Development Co., Ltd.
    Inventors: Meng Li, Zhongyuan Wu, Yongqian Li, Dacheng Zhang, Jingquan Wang, Yu Wang, Chen Xu
  • Patent number: 11475836
    Abstract: A display device includes a first pixel area having first pixels and a second pixel area having second pixels. Each first pixel includes a driving transistor initialized to a voltage of a first initialization power supply. Each second pixel includes a driving transistor initialized to a voltage of a second initialization power supply. The first initialization power supply and the second initialization power supply are set to different voltages. The first pixel area and the second pixel area have different widths.
    Type: Grant
    Filed: April 13, 2021
    Date of Patent: October 18, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Yang Wan Kim, Sun Ja Kwon, Byung Sun Kim, Hyun Ae Park, Hyung Jun Park, Su Jin Lee, Jae Yong Lee, Yu Jin Jeon
  • Patent number: 11475834
    Abstract: A pixel circuit comprises a light emission element; a driving transistor including a first electrode connected to the first node, a second electrode connected to a second node, and a gate electrode connected to a third node; a first transistor including a first electrode receiving a third voltage, a second electrode connected to the first node, and a gate electrode receiving a second light emission control signal; a first transistor including a first electrode connected to a first line transferring a first power voltage, a second electrode connected to the second node, and a gate electrode receiving a first light emission control signal; a first storage capacitor connected between the third node and a fourth node; and a switching transistor including a first electrode connected to a data line, a second electrode connected to the fourth node, and a gate electrode receiving a scan signal.
    Type: Grant
    Filed: February 19, 2021
    Date of Patent: October 18, 2022
    Inventor: Il-Hun Jeong
  • Patent number: 11475831
    Abstract: A display panel, a method of driving a display panel, and a display device are provided. The display panel includes a plurality of sub-pixel units arranged in an array, a plurality of compensation driving circuits and a plurality of light emitting control lines; sub-pixel units in each row are divided into a plurality of compensation light emitting groups, the plurality of compensation light emitting groups include a plurality of first compensation light emitting groups, the first compensation light emitting groups each include N sub-pixel units that are adjacent, and light emitting circuits of the N sub-pixel units that are adjacent are connected to one same compensation driving circuit; the light emitting circuits of the N sub-pixel units that are adjacent of each of the first compensation light emitting groups are respectively connected to N light emitting control lines that are different.
    Type: Grant
    Filed: November 1, 2018
    Date of Patent: October 18, 2022
    Assignee: Beijing BOE Technology Development Co., Ltd.
    Inventors: Minghua Xuan, Lei Wang, Li Xiao, Xiaochuan Chen
  • Patent number: 11468834
    Abstract: The present application discloses a pixel driving circuit for a sub-pixel in light-emitting display. The pixel driving circuit includes a driving sub-circuit comprising N driving transistors connected in series. N is an integer greater than 1. The N driving transistors include a first driving transistor having a source electrode coupled to a first input voltage port and an N-th driving transistor having a drain electrode coupled to a light-emitting diode. Additionally, the pixel driving circuit includes a power-storage sub-circuit coupled to a gate electrode of the first driving transistor and the drain electrode of the N-th driving transistor. Furthermore, the pixel driving circuit includes a charge-input sub-circuit configured to use a first control signal from a first scan line to control a connection between the gate electrode of the first driving transistor and a data line supplying a data voltage.
    Type: Grant
    Filed: May 18, 2018
    Date of Patent: October 11, 2022
    Assignees: Chengdu BOE Optoelectronics Technology Co., Ltd., Beijing BOE Technology Development Co., Ltd.
    Inventors: Yachuan Ma, Fucheng Yang, Jingang Zhang
  • Patent number: 11462151
    Abstract: A light emitting device including a plurality of pixels is provided. At least one of the pixels includes a light emitting unit, a first pixel driving circuit and a second pixel driving circuit. The first pixel driving circuit is configured to drive the light emitting unit. The second pixel driving circuit is configured to drive the light emitting unit. An emission period of the first pixel driving circuit is shorter than an emission period of the second pixel driving circuit.
    Type: Grant
    Filed: February 8, 2021
    Date of Patent: October 4, 2022
    Assignee: Innolux Corporation
    Inventor: Kazuyuki Hashimoto
  • Patent number: 11462172
    Abstract: A display device includes: a pixel part including a plurality of pixels; a first scan driver to provide a first scan signal to each of the pixels; and an initialization controller to control the first scan driver. Each of the pixels includes a pixel circuit including a plurality of transistors, and a light emitting element connected to the pixel circuit, an anode of the light emitting element is to be initialized to a first initialization voltage in response to the first scan signal having a gate-on level, and the initialization controller is to determine whether to provide the first scan signal having the gate-on level to each of the pixels for each frame.
    Type: Grant
    Filed: December 15, 2020
    Date of Patent: October 4, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Se Hyuk Park, Ji Youn Kim, Hong Soo Kim, Jin Young Roh, Hyo Jin Lee, Jae Keun Lim
  • Patent number: 11462154
    Abstract: A display system includes an LED array and a driving device. The driving device includes a current driver, a scan selector and a capacitor. The current driver is connected to drive lines of the LED array, and provides a plurality of driving current signals respectively to the drive lines. The scan selector is connected to scan lines of the LED array, and has a first terminal that is configured to receive an input voltage, and a second terminal. The scan selector outputs the input voltage to a selected one of the scan lines, and outputs a clamp voltage provided at the second terminal thereof to the other ones of the scan lines. The capacitor has a first terminal, and a second terminal that is connected to the second terminal of the scan selector.
    Type: Grant
    Filed: March 7, 2022
    Date of Patent: October 4, 2022
    Assignee: MACROBLOCK. INC.
    Inventors: Che-Wei Chang, Chen-Yuan Kuo, Chi-Min Hsieh
  • Patent number: 11462145
    Abstract: A display apparatus includes a display panel displaying an image based on an input image data, a data driver outputting a data voltage to a data line, and a driving controller determining a driving frequency of the display panel based on the input image data. The driving controller includes a flicker value storage configured to store flicker values for grayscale values corresponding to the input image data, a voltage drop determiner configured to adjust a flicker value of the flicker values based on a voltage drop of the display panel, a still image determiner configured to determine whether the input image data is a still image or a video image, and a driving frequency determiner configured to determine the driving frequency of the display panel using the flicker value based on the input image data being the still image.
    Type: Grant
    Filed: August 12, 2020
    Date of Patent: October 4, 2022
    Inventors: Suk Hun Lee, Sangan Kwon, Hong Soo Kim, Jin Young Roh, Sehyuk Park, Hyo Jin Lee
  • Patent number: 11462158
    Abstract: The embodiments of the present disclosure provide a pixel compensation circuit, a display panel, a driving method and a display device. The pixel compensation circuit includes a light emitting component; a drive circuit configured to generate a drive current input to a first electrode of the light emitting component; and a light emission control circuit configured to provide a first power signal to a second electrode of the light emitting component in response to a first light emission control signal, and to provide a second power signal to the second electrode of the light emitting component in response to a second light emission control signal, wherein the first power signal and the second power signal have opposite levels.
    Type: Grant
    Filed: March 29, 2019
    Date of Patent: October 4, 2022
    Assignee: Beijing BOE Technology Development Co., Ltd.
    Inventor: Xinshe Yin
  • Patent number: 11464121
    Abstract: A display-screen stretch and retraction auxiliary mechanism and an electronic apparatus are provided. The electronic apparatus includes a flexible display screen having an end fixed to a front face of the electronic apparatus, and another end extending via a side face of the electronic apparatus to a rear face of the electronic apparatus. The mechanism includes: a sliding member connected with the flexible display screen arranged on the rear face; a bracket slidably connected with the sliding member and arranged between the sliding member and the side face, and configured to be driven to apply a first action force towards the side face to the flexible display screen; and an elastic member having a first end connected to the sliding member and a second end fixed relative to the bracket, and configured to apply a second action force, facing away from the side face, to the sliding member.
    Type: Grant
    Filed: May 21, 2021
    Date of Patent: October 4, 2022
    Assignee: BEIJING XIAOMI MOBILE SOFTWARE CO., LTD.
    Inventor: Zhenhua Liu
  • Patent number: 11462166
    Abstract: A display apparatus includes first to third demultiplexer circuits respectively providing a data signal, supplied from a data driver, to three data lines. Each of the first to third demultiplexer circuits includes a switching unit providing the data signal to a corresponding data line of the three data lines on the basis of a voltage of a corresponding control line of first to third control lines, a voltage controller controlling the voltage of the corresponding control line in response to a corresponding time division control signal of first to third time division control signals and a corresponding auxiliary signal of first to third auxiliary signals which partially overlap the first to third time division control signals respectively, and a voltage discharger discharging the voltage of the corresponding control line.
    Type: Grant
    Filed: September 9, 2020
    Date of Patent: October 4, 2022
    Assignee: LG Display Co., Ltd.
    Inventors: Yeonwoo Shin, JungHyun Lee, Yewon Hong
  • Patent number: 11462153
    Abstract: An LED display device includes an LED array and a driver system thereof. The LED display device is configured so that LEDs in the LED array can switch between receiving scan signals at their anodes or receiving scan signals at their cathodes.
    Type: Grant
    Filed: December 20, 2021
    Date of Patent: October 4, 2022
    Assignee: SCT LTD.
    Inventors: Eric Li, Jim Wickenhiser, Yi Zhang, Shang-Kuan Tang, Shean-Yih Chiou, Brandon Li
  • Patent number: 11462152
    Abstract: A display device includes: a pixel including a first transistor connected between a first node and a second node to generate a driving current; an emission driver supplying an emission control signal; a scan driver supplying first to fourth scan signals in a period in which the emission control signal is supplied; a data drive supplying a data signal; a power supply supplying a voltage of a first power source; and a timing controller controlling driving of the scan driver, the emission driver, the data driver, and the power supply The first scan signal controls a timing at which the voltage of the first power source is supplied to the first node or the second node. The power supply changes a level of the voltage of the first power source in one frame period.
    Type: Grant
    Filed: July 20, 2021
    Date of Patent: October 4, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Yun Seong Kim, Seung Kyu Lee, Sun Joon Hwang, Min Seong Son, Youn Woo Choe
  • Patent number: 11455951
    Abstract: A pixel circuit, a driving method thereof and a display device are disclosed. The pixel circuit includes: a reset sub-circuit, a drive sub-circuit, a write sub-circuit, a compensation sub-circuit, a light-emitting control sub-circuit and a light-emitting element. The drive transistor is in the on-bias state in the reset period; the write sub-circuit is configured to write a data voltage of the data voltage terminal into the drive sub-circuit; the compensation sub-circuit is configured to compensate a threshold voltage of the drive transistor in the drive sub-circuit; the light-emitting control sub-circuit is configured to transmit a drive current, generated by the drive sub-circuit under action of the first voltage terminal, the second voltage terminal and the data voltage written into the drive sub-circuit, to the light-emitting element; and the light-emitting element is configured to emit light according to the drive current.
    Type: Grant
    Filed: July 2, 2018
    Date of Patent: September 27, 2022
    Assignee: Beijing BOE Technology Development Co., Ltd.
    Inventor: Chengchung Yang
  • Patent number: 11456715
    Abstract: An operational amplifier includes an output transistor having a gate coupled to an output node, at least one intermediate transistor each having a common gate node, an input transistor having a gate coupled to an input node, and a load device coupled to sources of the output transistor, the at least one intermediate transistor, and the input transistor. The operational amplifier further includes an output stage coupled to the output node, configured to drive the voltage on the output node based on currents through the output transistor, the at least one intermediate transistors, and the input transistor. The operational amplifier further includes a first switch coupled between the common gate node of the at least one intermediate transistor and the gate of the input transistor, and a second switch coupled between the output node and the common gate node of the at least one intermediate transistors.
    Type: Grant
    Filed: December 29, 2021
    Date of Patent: September 27, 2022
    Assignee: Synaptics Incorporated
    Inventor: Yutaka Saeki
  • Patent number: 11455938
    Abstract: A display device includes pixels coupled to first scan lines, second scan lines, emission control lines, and data lines; a first scan driver to supply a scan signal to each of the first scan lines at a first frequency to drive the display device at a first driving frequency, and to supply the scan signal to each of the first scan lines at a second frequency to drive the display device at a second driving frequency lower than the first driving frequency; a second scan driver to supply a scan signal to each of the second scan lines at the first frequency to drive the display device at the first driving frequency, and to supply the scan signal to each of the second scan lines at the second frequency to drive the display device at the second driving frequency; an emission driver to supply an emission control signal to each of the emission control lines at the first frequency; and a data driver to supply a data signal to each of the data lines in response to the scan signal supplied to each of the first scan lines
    Type: Grant
    Filed: July 4, 2021
    Date of Patent: September 27, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Kyong Hwan Oh, Ji Hyun Ka, Ki Myeong Eom, Hai Jung In, Jin Jeon, Won Kyu Kwak, Hyun Lee, Hwan Soo Jang, Jin Tae Jeong
  • Patent number: 11447437
    Abstract: An organic compound is represented by formula (1). In the formula (1), R1 to R24 are each independently selected from the group consisting of a hydrogen atom, a halogen atom, a substituted or unsubstituted alkyl group, a substituted or unsubstituted alkoxy group, a substituted or unsubstituted amino group, a substituted or unsubstituted aryl group, a substituted or unsubstituted heterocyclic group, a substituted or unsubstituted aryloxy group, a silyl group, and a cyano group.
    Type: Grant
    Filed: February 7, 2020
    Date of Patent: September 20, 2022
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yosuke Nishide, Naoki Yamada, Jun Kamatani
  • Patent number: 11450284
    Abstract: Two or more sensing switches are included in a sensing unit for detecting a characteristic value of a subpixel, and are electrically coupled to a reference voltage line. The two or more sensing switches share a sampling switch with a sensing capacitor included in the sensing unit, which reduces size of the sensing unit. Sensing may include driving simultaneously two or more sensing switches sharing a sensing capacitor, or sensing may be performed through continuous and short driving after simultaneous driving. Overall sensing time can be reduced and sensing accuracy improved.
    Type: Grant
    Filed: December 7, 2021
    Date of Patent: September 20, 2022
    Assignee: LG Display Co., Ltd.
    Inventors: Jinhee Jung, MooKyoung Hong
  • Patent number: 11450709
    Abstract: A novel functional panel that is highly convenient or highly reliable is provided. The functional panel includes a first pixel. The first pixel includes a first element, a color conversion layer, and a first functional layer. The first functional layer is positioned between the first element and the color conversion layer. The first element has a function of emitting light and contains gallium nitride. The color conversion layer has a function of converting the color of light emitted from the first element into a different color. The first functional layer includes a first insulating film and a pixel circuit. The first insulating film includes a region positioned between the pixel circuit and the first element, and has an opening. The pixel circuit includes a first transistor. The first transistor includes a first oxide semiconductor film and is electrically connected to the first element through the opening.
    Type: Grant
    Filed: November 10, 2020
    Date of Patent: September 20, 2022
    Assignee: SEMICONDUCTOR ENERGY LABORATORY CO., LTD.
    Inventors: Shunpei Yamazaki, Takayuki Ikeda
  • Patent number: 11450088
    Abstract: A method of detecting biometric feature with an electronic device and the method includes the following steps. Firstly, a detection region is provided on the electronic, the electronic device includes a plurality of first sensor units and a plurality of second sensor units. Then, a first scanning light is generated in the detection region, and the first scanning light is sensed by the plurality of first sensor units. Next, a second scanning light is generated in the detection region, and the second scanning light is sensed by the plurality of second sensor units. Finally, a biometric feature is determined.
    Type: Grant
    Filed: October 1, 2019
    Date of Patent: September 20, 2022
    Assignee: InnoLux Corporation
    Inventor: Ayumu Mori
  • Patent number: 11450836
    Abstract: A display device including a display panel having a light emitting area and a non-light emitting area around the light emitting area, a first conductive pattern disposed in the non-light emitting area, a second conductive pattern disposed on the first conductive pattern, and a reflection pattern overlapping the non-light emitting area and disposed between the light emitting area and the second conductive pattern.
    Type: Grant
    Filed: October 27, 2020
    Date of Patent: September 20, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jungwook Lee, Minjae Baek, Jinbo Shim, Jongwon Lee, Wongu Cho, Sang Youn Han
  • Patent number: 11444261
    Abstract: In non-limiting example embodiments, an electroluminescent device may include a lower structure including an emission area, and an encapsulation structure located on the lower structure. The lower structure may include a window. The window may be a light transmitting region or a notch. The light transmitting region may be spaced apart from the emission area and completely or partially surrounded by the emission area in a plan view. The notch may be formed at one side of the lower structure and recessed inward in a plan view such that one side of the emission area substantially conforms to the notch.
    Type: Grant
    Filed: December 4, 2020
    Date of Patent: September 13, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventor: Myoung Seo Park
  • Patent number: 11443670
    Abstract: Embodiment of the present disclosure relate to a display device, a controller, a driving circuit, and a driving method capable of easily improving the motion picture response time through a multi-scanning operation of switching devices.
    Type: Grant
    Filed: May 19, 2020
    Date of Patent: September 13, 2022
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Hyuckjun Kim, SeungTae Kim, Yumin Hong
  • Patent number: 11443695
    Abstract: A display apparatus includes a substrate having a display area and a peripheral area, the peripheral area being outside the display area, a display unit on the display area of the substrate, the display unit including a pixel circuit and a display device electrically connected to the pixel circuit, a driver in the peripheral area of the substrate and configured to provide a signal to the display device, and an output wiring configured to transmit the signal from the driver to the display device, at least a part of the output wiring overlapping the driver.
    Type: Grant
    Filed: February 8, 2019
    Date of Patent: September 13, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventor: Byungsun Kim
  • Patent number: 11443682
    Abstract: A display device, a gate drive circuit, a shift register and a control method are disclosed. A first shift register unit of the shift register is configured to write a first control signal to a first node under control of a first input signal, write a first clock signal to a first signal output terminal; a second shift register unit of the shift register is configured to write a second control signal to the first node under control of a second input signal, write a second clock signal to a second signal output terminal; during the first frame, the first clock signal and the first input signal are pulse signals, the second clock signal and the second input signal are DC signals; during the second frame, the first clock signal and the first input signal are DC signals, the second clock signal and the second input signal are pulse signals.
    Type: Grant
    Filed: January 9, 2019
    Date of Patent: September 13, 2022
    Assignees: HEFEI BOE DISPLAY TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Zuquan Hu, Zhenyu Zhang, Haipeng Yang, Ke Dai
  • Patent number: 11443411
    Abstract: A system and method for correcting image distortion is provided. The system and method remaps pixel position of distorted images using a combination of radial distortion correction and tangential distortion correction lookup tables consuming less physical memory. The solution conserves both memory and memory access bandwidth. The radial distortion correction lookup table is formed by taking advantage of radial distortion being generally symmetric about a determined optical center of the camera lens. This symmetry allows for use of a quarter LUT for correction in all quadrants of a distorted image. In addition, tangential distortion can be corrected in a symmetric manner that saves memory space as well.
    Type: Grant
    Filed: July 8, 2020
    Date of Patent: September 13, 2022
    Assignee: NXP USA, Inc.
    Inventors: Ankur Bindal, Michael Andreas Staudenmaier, Sharath Subramanya Naidu
  • Patent number: 11443683
    Abstract: A display device: a substrate including a first display area and a second display area; a signal line which overlaps the first display area and the second display area; and a common electrode which overlaps the first display area and the second display area, where the first display area includes a first pixel area, the second display area includes a second pixel area and a transmitting area, the transmitting area includes a first transmitting area and a second transmitting area, which have different transmittances from each other, the common electrode overlaps the first pixel area, the second pixel area and the second transmitting area, and in the second transmitting area, at least a part of the signal line and the common electrode overlap each other.
    Type: Grant
    Filed: May 29, 2020
    Date of Patent: September 13, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Dong Hyun Kim, Gun Hee Kim, Sang Hoon Kim, Soo Hyun Moon, Seung Chan Lee, Joo Hee Jeon, Sung Jin Hong, Tae Hoon Yang
  • Patent number: 11444134
    Abstract: A light-emitting device includes a semi-transmissive reflection layer, a first reflection layer that is disposed in a first sub-pixel, a first pixel electrode that is disposed in the first sub-pixel, a first color filer that is disposed in the first sub-pixel, a second reflection layer that is disposed in a second sub-pixel, a second pixel electrode that is disposed in the second sub-pixel, a second color filter that is disposed in the second sub-pixel, the second color filter that is same color as the first color filter, a light-emitting functional layer, and an insulating layer that is disposed between the first reflection layer and the first pixel electrode, the light-emitting functional layer that is disposed between the second reflection layer and the second pixel electrode. A thickness of the insulating layer in the second sub-pixel is thicker than a thickness of the insulating layer in the first sub-pixel.
    Type: Grant
    Filed: July 23, 2020
    Date of Patent: September 13, 2022
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Takeshi Koshihara, Jun Irobe
  • Patent number: 11444137
    Abstract: A display panel and a display device including the display panel are provided. The display panel includes a first substrate and a second substrate opposite to each other. The first substrate includes a first base, and the second substrate includes a second base. The first substrate further includes a plurality of first electrodes in an array on the first base, and the second substrate further includes a plurality of second electrodes in an array on the second base. An orthographic projection of each second electrode on the first base at least partially overlaps orthographic projections of n first electrodes on the first base, n is an integer greater than 1.
    Type: Grant
    Filed: March 20, 2020
    Date of Patent: September 13, 2022
    Assignees: Beijing BOE Optoelectronics Technology Co., Ltd., Beijing BOE Technology Development Co., Ltd.
    Inventors: Jiaxing Wang, Hongliang Yuan, Xiaojuan Wu, Qi Zheng, Yao Bi, Zhiqiang Zhao, Xuan Zhong, Zhangxiang Cheng, Donghua Zhang