Temporal Processing (e.g., Pulse Width Variation Over Time Patents (Class 345/691)
  • Patent number: 11120723
    Abstract: A display panel driver includes a storage unit configured to store an align pattern and a timing controller configured to output align image data based on an align control signal provided from a facility driver during a mechanism assembly process of a display panel. The align pattern includes an align mark, and the align image data includes the align pattern.
    Type: Grant
    Filed: December 13, 2019
    Date of Patent: September 14, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Silyi Bang, Myung Bo Sim, Won Bok Lee, Shim Ho Yi, Jinhyuk Jang, Chan Sung Jung
  • Patent number: 11120742
    Abstract: Provided herein may be a display device and a driving method thereof. The display device may include a pixel area including multiple pixels, a timing controller configured to generate a control signal based on an input image, a data driver configured to supply a data voltage to data lines coupled to the pixel area depending on the control signal, a scan driver configured to supply scan signals to scan lines coupled to the pixel area depending on the control signal, and a power manager configured to supply an initialization voltage for initializing the multiple pixels and a first supply voltage for driving the multiple pixels to the pixel area. The power manager senses a voltage change in the first supply voltage supplied to the pixel area, and changes the first supply voltage and supplies the same to the pixel area in order to compensate for the sensed voltage change.
    Type: Grant
    Filed: June 4, 2020
    Date of Patent: September 14, 2021
    Inventor: Jong Kwang Hwang
  • Patent number: 11114011
    Abstract: A display driver circuit for high resolution and high frame rate and a display device using the same are provided. A display driver circuit for high resolution and high frame rate includes a GAMMA output circuit, multiple digital-to-analog converters (DACs), multiple source operation amplifiers and at least a pre-charging circuit. The GAMMA output circuit outputs multiple grayscales of GAMMA voltages. Each DAC receives the GAMMA voltages and provides an output data voltage according to display data. Input terminals of the source operation amplifiers correspondingly coupled to output terminals of the DACs receive the corresponding output data voltages. The pre-charging circuit coupled between the input terminal of at least one of the source operation amplifiers and the output terminal of at least one of the DACs pre-charges the input terminal of the coupled source operation amplifier, so that an output terminal of the coupled source operation amplifier has fast response to the received output data voltage.
    Type: Grant
    Filed: September 17, 2020
    Date of Patent: September 7, 2021
    Assignee: FOCALTECH SYSTEMS CO., LTD.
    Inventors: Li-Shen Chang, Chien-Hsien Lin, Ko-Ming Su, Wen-Shian Shie
  • Patent number: 11100855
    Abstract: A display device capable of improving image quality is provided. A first pixel circuit and a second pixel circuit are included; a memory node is provided in each pixel circuit and a first signal can be retained in the memory node. The first signal is added to a second signal by capacitive coupling, and then can be supplied to a display element. Thus, the display device can display a corrected image. Furthermore, the first pixel circuit and the second pixel circuit share a signal line, whereby the aperture ratio of a pixel can be increased.
    Type: Grant
    Filed: December 19, 2018
    Date of Patent: August 24, 2021
    Inventors: Kazunori Watanabe, Kei Takahashi, Susumu Kawashima, Kouhei Toyotaka, Koji Kusunoki
  • Patent number: 11100304
    Abstract: Display panel, driving method, and display device are provided. The display panel includes first signal output lines, first signal input lines, fingerprint recognition units arranged in an array, touch-control electrodes arranged in an array, and a driving circuit. One touch-control electrode corresponds to at least two fingerprint recognition units, and is electrically connected to at least one first signal input line. One fingerprint recognition unit includes a photodiode, a first electrode, and a switch module. A first terminal of the photodiode is electrically connected to the switch module, a second terminal of the photodiode is electrically connected to a corresponding touch-control electrode, the switch module is electrically connected to a corresponding first signal output line, and the first electrode is electrically connected to the first terminal of the photodiode. The first signal output lines and the first signal input lines are electrically connected to the driving circuit.
    Type: Grant
    Filed: May 13, 2020
    Date of Patent: August 24, 2021
    Assignee: XIAMEN TIANMA MICRO-ELECTRONICS CO., LTD.
    Inventors: Min Huang, Ying Sun, Yumin Xu
  • Patent number: 11100899
    Abstract: In one embodiment, a computing system may access a first rendered frame generated at a first frame rate. The system may generate, based on the first rendered frame, subframes at a second frame rate higher than the first frame rate. The system may generate a first subframe by determining a viewing direction of the user based on sensor data, determining, based on the viewing direction, at least a first viewing region encompassing a foveal focus point of the user and a second viewing region excluding the first viewing region, determining, for the first subframe, color values corresponding to the first viewing region using a first sampling resolution and color values corresponding to the second viewing region using a second sampling resolution lower than the first sampling resolution. The system may output subframes for display at the second frame rate.
    Type: Grant
    Filed: August 13, 2019
    Date of Patent: August 24, 2021
    Assignee: Facebook Technologies, LLC
    Inventor: Larry Seiler
  • Patent number: 11094251
    Abstract: A method includes representing dots of an image to be displayed within a field by a digital image code. The field is divided into sub-fields which are further divided into a first and second time interval which respectively comprise a first and a second number of equally long time slots. Time slots are assigned to each bit of the digital image code according to each bit's significance. Successive time slots of the first time interval are assigned to one of the bits of the image code and successive time slots of the second time interval are assigned to a different one of the bits of the image code. Within the duration of at least one sub-field, each rows is selected twice for respectively writing a first bit of the image code during the first time interval and writing a second bit of the image code during the second time interval.
    Type: Grant
    Filed: December 20, 2019
    Date of Patent: August 17, 2021
    Assignee: IMEC VZW
    Inventor: Jan Genoe
  • Patent number: 11094279
    Abstract: A pixel compensation method, a pixel compensation device and a display device are provided. The pixel compensation method includes: determining a target sub-pixel to be compensated in a display area; setting at least one charged sub-pixel connected to a same data line as the target sub-pixel, as a reference sub-pixel; acquiring a compensation value of the target sub-pixel; and compensating a display parameter of the target sub-pixel based on the compensation value.
    Type: Grant
    Filed: November 27, 2018
    Date of Patent: August 17, 2021
    Assignees: BEIJING BOE DISPLAY TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yifang Chu, Guangliang Shang, Jieqiong Wang
  • Patent number: 11072988
    Abstract: A fluid control system includes an apparatus comprising a first and second fluid port, first and second control lines, a valve arrangement being configurable between a first state in which the first fluid port is in fluid communication with the first control line and the second fluid port is in fluid communication with the second control line, wherein the apparatus is switchable between first and second configurations responsive to pressure differentials between the first and second control lines, and a second state in which the second fluid port is in fluid communication with a pressurized line and the first fluid port is in fluid communication with a vent arrangement to thereby configure the apparatus into the second configuration, and a control arrangement for reconfiguring the valve arrangement between the first and second states in response to an actuation signal.
    Type: Grant
    Filed: December 19, 2017
    Date of Patent: July 27, 2021
    Assignee: Expro North Sea Limited
    Inventors: Paul Deacon, Dariusz Szpunar
  • Patent number: 11074864
    Abstract: A pixel circuit compensates the threshold voltage variations of the drive transistor with an ultra-short one horizontal (1H) time, with additionally removing the possible memory effects associated with the light-emitting device and the drive transistor from the previous frame. An ultra-short 1H time (<2 ?s) is achieved via separation of threshold compensation of the drive transistor and data programming phases. The pixel circuit has a two-capacitor configuration, whereby a first capacitor is used for drive transistor threshold compensation, and a second capacitor is used to store the data voltage during a data pre-loading phase. Two transistors are employed to electrically connect the gate of the drive transistor to the second capacitor that stores the data voltage, wherein each transistor in this dual transistor configuration is controlled by a different control signal.
    Type: Grant
    Filed: March 26, 2020
    Date of Patent: July 27, 2021
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Tong Lu, Michael James Brownlow
  • Patent number: 11074850
    Abstract: Disclosed is a method for generating gray-scale voltage of display panel, which includes: generating, by a data source integrate circuit, a preset number of gamma voltages according to a target analog voltage(S10); and generating the gray-scale voltage of the display panel in accordance with each gamma voltage (S20).
    Type: Grant
    Filed: November 21, 2018
    Date of Patent: July 27, 2021
    Assignee: HKC Corporation Limited
    Inventors: Shuixiu Hu, Dongsheng Guo
  • Patent number: 11076464
    Abstract: A driving circuit, for providing a driving current to a light emitting diode, includes a PWM demodulator, a current source and a local clock generator. The PWM demodulator is configured to sample a PWM input signal in reference with a local clock signal and generate a brightness code according to a duty ratio of the PWM input signal. The current source is coupled with the PWM demodulator and the light emitting diode. The current source is configured to generate the driving current with a current amplitude according to the brightness code. The local clock generator is configured to generate the local clock signal according to a global clock signal during a first cycle period of successive cycle periods of the PWM input signal. The local clock generator suspends oscillation of the local clock signal during a second cycle period of the successive cycle periods of the PWM input signal.
    Type: Grant
    Filed: September 6, 2019
    Date of Patent: July 27, 2021
    Assignee: NOVATEK Microelectronics Corp.
    Inventor: Hsiang-Yi Chiu
  • Patent number: 11069303
    Abstract: An organic light-emitting display device and a method of driving the same. The organic light-emitting display device is driven, with one frame being divided into a first period, a second period, a third period, and a fourth period, and includes pixels coupled to scan lines and data lines, a first power supply configured to supply first driving power, wherein the first driving power is set to a first voltage during the first period and the fourth period and a second voltage lower than the first voltage during the second period and the third period, a second power supply configured to supply second driving power. The second driving power is set to a third voltage during the first to third periods and to a fourth voltage lower than the third voltage during the fourth period.
    Type: Grant
    Filed: August 9, 2018
    Date of Patent: July 20, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Won Jun Lee, Choi Ho Kim, Gun Woo Yang
  • Patent number: 11056042
    Abstract: Systems and methods for providing display panels with reduced visual artifacts. A display system is provided that includes a pixel array having a plurality of pixels arranged in rows and columns. The display system receives an image stream that includes a plurality of sets of image data that each represent an image to be sequentially presented by the display system. The data for each frame or set of image data is loaded into the pixel array according to a loading sequence with reduces the visual artifacts perceived by a viewer of the display system. The loading sequence may include an inside-out loading sequence which gives preference to a central region of the pixel array, a speculative preloading sequence which first loads portions of the pixel array with speculative data, or various combinations thereof.
    Type: Grant
    Filed: March 24, 2020
    Date of Patent: July 6, 2021
    Assignee: Valve Corporation
    Inventors: Jeremy Adam Selan, Duane Martin Evans
  • Patent number: 11022806
    Abstract: A near-eye display system includes a transmissive display panel to display a near-eye light field frame comprising an array of elemental images. The transmissive display panel is configured to transmit light rays of the near-eye light field frame away from the user's eye and towards an array of curved beam splitters. The curved beam splitters collimate the transmitted light rays and reflect the collimated light rays back towards the transmissive display panel for passing to the user's eye.
    Type: Grant
    Filed: May 4, 2020
    Date of Patent: June 1, 2021
    Assignee: Google LLC
    Inventors: John D. Perreault, Patrick Llull
  • Patent number: 11017719
    Abstract: A display device includes a plurality of pixels. Each pixel includes a first transistor that controls an amount of current received from a first power supply voltage line connected via a second node to an organic light emitting diode in response to a voltage of a first node, a second transistor connected between a data line and the second node and that includes a first gate electrode connected to a first scan line, a light emitting line connected to a gate electrode of at least one light emitting transistor located in a current path between the first power supply voltage line and the organic light emitting diode, and a seventh transistor connected between one of at least one second gate electrode of the second transistor and the light emitting line. Accordingly, a threshold voltage of a switching transistor included in each of the plurality of pixels may be negatively shifted.
    Type: Grant
    Filed: September 11, 2019
    Date of Patent: May 25, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hyo Jung Kim, Tae Young Kim, Yong Sung Park, Jong Woo Park, Mi Seon Seo, Keun Soo Lee, Ki Ju Im, Dae Youn Cho, Young Tae Choi, Hyun Cheol Hwang
  • Patent number: 11017723
    Abstract: A pixel of a display device includes a capacitor; a light emitting diode; and first, second, third, and fourth transistors. The display device has a normal frequency mode and a low frequency mode. Two electrodes of the capacitor are respectively connected to a first voltage source and a gate node. A gate electrode of the first transistor is connected to the gate node. In a hold period in the low frequency mode, both the second and third transistors receive a scan signal, the third transistor diode-connects the first transistor, the fourth transistor receives an initialization signal and transfers an initialization voltage to the gate node, the scan signal is at a first off voltage level, and the initialization signal is at a second off voltage level unequal to the first off voltage level. The cathode of the light emitting diode is connected to a second voltage source.
    Type: Grant
    Filed: May 6, 2020
    Date of Patent: May 25, 2021
    Inventors: Hyo Jin Lee, Sangan Kwon, Jin Young Roh, Sehyuk Park
  • Patent number: 11004402
    Abstract: An embodiment provides a technology relating to data transmission or reception in a display panel. In the embodiment, a plurality of integrated circuits sharing a data line may transmit an indication signal through signal lines connected 1:1 to the circuits, and transmit data through the data line in response to the indication signal.
    Type: Grant
    Filed: November 29, 2018
    Date of Patent: May 11, 2021
    Assignee: SILICON WORKS CO., LTD.
    Inventors: Seung Hwan Ji, Min Young Jeong, Yong Jung Kwon, Jung Bae Yun, Jeung Hie Choi
  • Patent number: 10998069
    Abstract: An electronic device includes an active area and multiple shift registers. The active area comprises multiple pixel circuits. Each of the multiple shift registers is configured to output a first control signal, a second control signal, and a third control signal to a part of pixel circuits of the multiple pixel circuits. A duty ratio of the third control signal is greater than a duty ratio of the second control signal, and the duty ratio of the second control signal is greater than a duty ratio of the first control signal. A part of the multiple shift registers and other part of the multiple shift registers are substantially symmetrically disposed at two sides of the active area, respectively.
    Type: Grant
    Filed: February 14, 2020
    Date of Patent: May 4, 2021
    Assignee: AU OPTRONICS CORPORATION
    Inventors: Ling-Ying Chien, Kuang-Hsiang Liu, Chee-Wai Lau
  • Patent number: 10997934
    Abstract: Image display control by which effective correction is performed even for a biased change in a source potential for one frame in a liquid crystal display device is achieved. A liquid crystal display device (2) includes a correction unit that corrects a source voltage value to a pixel. The correction unit calculates a correction amount by using an integrated value of a source potential for previous one frame instead of an integrated value of the source potential for next one frame. The liquid crystal display device (2) applies the source voltage based on the correction amount to the pixel.
    Type: Grant
    Filed: October 26, 2018
    Date of Patent: May 4, 2021
    Assignee: SHARP KABUSHIKI KAISHA
    Inventor: Tomohiko Mori
  • Patent number: 10984759
    Abstract: An afterimage compensator includes: a global shifter configured to determine an upscaling area and a downscaling area of a display unit, that together correspond to a preset global shift path, to shift a main image of the display unit; a logo shifter configured to analyze image data corresponding to a logo image and a preset logo peripheral area surrounding the logo image, and configured to determine a logo upscaling area and a logo downscaling area that are each included in the logo peripheral area, the logo shifter being further configured to shift the logo image; and a scaler configured to combine the upscaling area, the downscaling area, the logo upscaling area, and the logo downscaling area and configured to scale image data corresponding to the combined scaling area.
    Type: Grant
    Filed: June 20, 2019
    Date of Patent: April 20, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Byung Ki Chun, Young Wook Yoo, Jun Gyu Lee
  • Patent number: 10984736
    Abstract: An image display processing method for a display device, an image display processing device, a display device and a storage medium are provided. The display device includes a backlight unit, the backlight unit includes a plurality of backlight blocks and is driven by a local dimming mode, and the image display processing method includes: acquiring a regional eigenvalue of each backlight block of an (n)th frame image and a regional eigenvalue of each backlight block of an (n?1)th frame image; and performing a peak driving processing on a backlight luminance of each backlight block of the (n)th frame image, based on a preset threshold, the regional eigenvalue of each backlight block of the (n)th frame image and the regional eigenvalue of each backlight block of the (n?1)th frame image, so as to acquire an adjusted backlight luminance of each backlight block of the (n)th frame image.
    Type: Grant
    Filed: April 23, 2019
    Date of Patent: April 20, 2021
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yanhui Xi, Ming Chen, Xiaomang Zhang, Yan Sun, Bin Dai, Zhihua Ji, Tiankuo Shi, Yuxin Bi, Lingyun Shi
  • Patent number: 10977992
    Abstract: A driving compensation method for a pixel circuit includes: in a compensation phase of the pixel circuit, providing a preset signal to the control terminal of the driving transistor to write the preset signal to the control terminal of the driving transistor, to write internal loss voltage of the driving transistor to the first terminal of the driving transistor; wherein the compensation phase includes a first external compensation phase and a second external compensation phase; in the first external compensation phase, the preset signal is a sum of a reference signal and a threshold voltage of the driving transistor; in the second external compensation phase, the preset signal is the sum of the data signal and the threshold voltage of the driving transistor.
    Type: Grant
    Filed: November 30, 2018
    Date of Patent: April 13, 2021
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yicheng Lin, Yu Wang, Ling Wang, Pan Xu, Cuili Gai, Baoxia Zhang, Guang Yan, Dongfang Yang
  • Patent number: 10971096
    Abstract: A display device includes a sensing storage line disposed in a first direction; a sensing data line disposed in a second direction; pixel thin film transistors which includes a first gate electrode connected to a gate line, a first source electrode connected to a data line, and a first drain electrode spaced apart from the first source electrode; and sensor thin film transistors which include a second gate electrode connected to the sensing storage line, a second source electrode electrically connected to the sensing data line, and a second drain electrode spaced apart from the second source electrode, wherein the second drain electrode may be electrically connected to the first drain electrode to share a pixel storage capacitor.
    Type: Grant
    Filed: July 25, 2019
    Date of Patent: April 6, 2021
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Daeyoung Seo, Joon Heo, YoungMin Jeong, SeungHwan Shin
  • Patent number: 10964264
    Abstract: An electroluminescent display panel including a pixel driving circuit that includes a light-emitting element, a first capacitor connected to a first node and a second node, a second capacitor connected to the second node and a high potential voltage line, a driving transistor supplying electric current to the light-emitting element, a first switching circuit controlled by a first scan signal and turned on during the sampling period to compensate for a time-varying characteristic of the driving transistor, a second switching circuit controlled by a second scan signal and turned on during the programming period to apply a data voltage to the second node, and a light emission control circuit controlled by an emission signal and turned on during the initialization period and the emission period to apply the high potential voltage to the driving transistor.
    Type: Grant
    Filed: May 12, 2020
    Date of Patent: March 30, 2021
    Assignee: LG DISPLAY CO., LTD.
    Inventor: Jung Chul Kim
  • Patent number: 10950169
    Abstract: An organic light emitting diode display includes a substrate. The substrate defines a first pixel portion and one or more second pixel portions. Pixels formed in the first pixel portion include at least some transparent organic light emitting diode pixels, while other pixels formed in the one or more second pixel portions include only reflective organic light emitting diode pixels.
    Type: Grant
    Filed: June 20, 2019
    Date of Patent: March 16, 2021
    Assignee: Motorola Mobility LLC
    Inventor: Ye Yang
  • Patent number: 10930208
    Abstract: A luminance control unit includes: a driving power voltage setting unit configured to determine a driving power voltage to be provided to a display panel, the driving power voltage corresponding to a target brightness, based on a plurality of driving power voltages respectively corresponding to a plurality of reference brightnesses of the display panel; and a gamma voltage setting unit configured to determine a target luminance corresponding to the target brightness, based on a plurality of target luminances respectively corresponding to the plurality of reference brightnesses, and to set gamma voltages for implementing the target luminance, wherein the driving power voltage and the gamma voltages are differently set with respect to the same reference brightness according to an ambient illumination intensity of the display panel.
    Type: Grant
    Filed: March 17, 2020
    Date of Patent: February 23, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Si Beak Pyo, Sung Kook Kim
  • Patent number: 10923044
    Abstract: A method of adjusting luminance of a backlight unit included in a liquid crystal display device that performs inversion driving is provided. The method derives a positive polarity histogram and a negative polarity histogram of an image frame based on image frame data, corresponding to the image frame, and a data polarity pattern for implementing the image frame, derives a luminance compensation value according to data polarity dominance of the image frame by analyzing the positive polarity histogram and the negative polarity histogram, and applies the luminance compensation value to the luminance of the backlight unit during a portion of a time period of the image frame.
    Type: Grant
    Filed: October 18, 2019
    Date of Patent: February 16, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jahun Koo, Su-Han Woo, Kyung-Hun Lee
  • Patent number: 10916618
    Abstract: The present disclosure relates to an array substrate and a method for repairing an array substrate.
    Type: Grant
    Filed: May 15, 2019
    Date of Patent: February 9, 2021
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Minghua Xuan, Xiaochuan Chen, Han Yue, Ning Cong
  • Patent number: 10909941
    Abstract: A liquid crystal display device and a driving method of the liquid crystal display device includes a display panel including a plurality of gate lines, a plurality of data lines crossing the gate lines, and a plurality of pixels coupled to the gate lines and the data lines, a gate driver configured to provide a gate signal to the pixels through the gate lines, a data driver configured to provide a data signal to the pixels through the data lines and a timing controller configured to receive an image data provided from an external device and generate control signals that control the gate driver and the data driver. The timing controller analyzes a pattern of the image data by every frame, and changes an inversion driving method and gamma voltages of the image data based on a pattern analyzing result from the analysis of the pattern of the image data.
    Type: Grant
    Filed: December 28, 2018
    Date of Patent: February 2, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Taehyeong An, KyoungHo Lim, Soo-Yeon Lee, Jaehoon Lee, Nam-Gon Choi
  • Patent number: 10908866
    Abstract: An organic light emitting diode (OLED) display device includes a communication transceiver configured to connect with a terminal; a display including pixels constituted by OLEDs; and a controller configured to receive mirroring image data, which corresponds to a screen displayed on the terminal, through the communication transceiver, control the display to display a mirroring image on an area of the display based on the received mirroring image data, and adjust brightness of the displayed mirroring image based on an average picture level (APL) of the displayed mirroring image.
    Type: Grant
    Filed: November 8, 2019
    Date of Patent: February 2, 2021
    Assignee: LG ELECTRONICS INC.
    Inventor: Youngho Chun
  • Patent number: 10902783
    Abstract: Provided is a light emitting display device and a method of driving the same. The light emitting display device includes: a display panel in which pixel lines including a plurality of pixels are divided into at least one area A and at least one area B; a panel driver connected to the pixel line; and a timing controller for controlling operation of the panel driver to perform image data writing (IDW) driving for sequentially writing input image data to a plurality of pixel lines included in one of the area A and the area B and to perform sensing data writing (SDW) driving for writing sensing data to a pixel line included in one of the area A and the area B in a vertical blank period in which image data writing driving is not performed. The timing controller writes coupling compensation data during the vertical blank period.
    Type: Grant
    Filed: August 27, 2019
    Date of Patent: January 26, 2021
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Joonmin Park, Shinji Takasugi
  • Patent number: 10896643
    Abstract: A current detection method for a pixel circuit, a display panel and a display device are provided, for implementing both a compensation for the threshold voltage Vth of the drive transistor and a compensation for the aging of the light emitting element organic light emitting diode (OLED) by controlling to turn on or turn off the first switch transistor and the second switch transistor, and by acquiring the drive current of the drive transistor and the compensation current of the light emitting element, thus the brightness differences among pixels are compensated, thereby avoiding the problem of non-uniform display brightness and poor image uniformity.
    Type: Grant
    Filed: June 27, 2017
    Date of Patent: January 19, 2021
    Assignee: SHANGHAI TIANMA AM-OLED CO., LTD.
    Inventors: Yue Li, Gang Liu
  • Patent number: 10891904
    Abstract: Disclosed are an organic light-emitting diode-based display device and a method for controlling the device. The device may include an organic light-emitting diode-based display panel; and a data driver configured for: dividing a reference gamma voltage into a first gamma voltage corresponding to a high gray level and a second gamma voltage corresponding to a low gray level; selecting one between the first and second gamma voltage based on a gray level of video data; and supplying the selected one through a corresponding output stage among dual output stages, wherein the dual output stages respectively correspond to the first and second gamma voltages.
    Type: Grant
    Filed: July 3, 2019
    Date of Patent: January 12, 2021
    Assignee: LG Display Co., Ltd.
    Inventors: Wonsik Jeon, Jongsik Ham
  • Patent number: 10867547
    Abstract: An electronic device includes a display panel including a first edge extending in a first direction and a second edge in a second direction perpendicular to the first direction, a first group of gate lines supplying a first gate voltage to a first pixel line and supplying a third gate voltage to a third pixel line, a second group of gate lines supplying a second gate voltage to a second pixel line and supplying a fourth gate voltage to a fourth pixel line, and at least one processor configured to control the electronic device to: sequentially supply the first gate voltage and the third gate voltage through the first group of gate lines to output a first part of specified image data and sequentially supply the second gate voltage and the fourth gate voltage through the second group of gate lines to output a second part of the specified image data the second part of the specified image data being different from the first part of the specified image data.
    Type: Grant
    Filed: April 4, 2019
    Date of Patent: December 15, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jungchul An, Jongkon Bae, Donghwy Kim, Hyungsup Byeon
  • Patent number: 10861388
    Abstract: A display panel and a driving method thereof, a display device. The display panel includes a common cathode, a first power terminal, a first wire and a first switch. The driving method includes: obtaining a total image current of a display image; and determining whether the total image current is greater than a first threshold current, if the total image current is greater than the first threshold current, controlling the first switch to disconnect the first wire, if the total image current is not greater than the first threshold current, controlling the first switch to connect the first wire, so that the second side of the common cathode is connected to the first power terminal through the first wire.
    Type: Grant
    Filed: July 22, 2019
    Date of Patent: December 8, 2020
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Zhenzhen Li, Libin Liu, Li Wang
  • Patent number: 10861395
    Abstract: The present disclosure provides a display device including a display panel and a scan driver. The display panel has a display area for displaying an image. A scan driver is arranged in a non-display area of the display panel, and includes circuits for generating scan signals and a scan driver having signal lines for transferring signals and voltages for driving the circuits. Each of the circuits is composed of a plurality of stages and disposed along the display area, and the signal lines are disposed outside the circuits.
    Type: Grant
    Filed: December 11, 2018
    Date of Patent: December 8, 2020
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Sunji Moon, Soonhwan Hong, Juyun Lee
  • Patent number: 10861418
    Abstract: A method, a storage medium, and a device are provided for determining ambient brightness in the field of electronic technology. The method includes: outputting a control signal by the IC to the display screen, the control signal being configured to control brightness of the display screen; sending an instruction message by the IC to the brightness sensor when a level of the control signal is a first level, the first level being configured to control the display screen to display black, the instruction message being configured to instruct the brightness sensor to acquire an optical signal passing through the display screen; and determining an ambient brightness value by the brightness sensor based on the optical signal.
    Type: Grant
    Filed: June 12, 2019
    Date of Patent: December 8, 2020
    Assignee: Beijing Xiaomi Mobile Software Co., Ltd.
    Inventors: Yuan Zhang, Gang Wang
  • Patent number: 10854129
    Abstract: Hybrid architectures and method methods of operating a display panel are described. In an embodiment, row driver and pixel driver functions are combined in a group of backbone hybrid pixel driver chips, wherein global signal lines are distributed to the backbone hybrid pixel driver chips, where the global signals are manipulated and distributed to a row of pixel driver chips.
    Type: Grant
    Filed: March 18, 2019
    Date of Patent: December 1, 2020
    Assignee: Apple Inc.
    Inventors: Xiang Lu, Mahdi Farrokh Baroughi, Xiaofeng Wang, Derek K. Shaeffer, Henry C. Jen, Hopil Bae
  • Patent number: 10847113
    Abstract: A method of driving a liquid crystal display panel is provided. The liquid crystal display panel includes: a liquid crystal display pixel including a liquid crystal structure including a pixel electrode, a liquid crystal layer, and a common electrode; a switching transistor connected between the pixel electrode of the liquid crystal structure and a data-line; and a storage capacitor connected to the pixel electrode of the liquid crystal structure. The method includes: calculating an accumulated driving time of the liquid crystal display panel by accumulating a driving time of the liquid crystal display panel; determining whether or not the accumulated driving time has reached a deterioration reference time; and when the accumulated driving time is determined to have reached the deterioration reference time, changing a gate-off voltage applied to a gate terminal of the switching transistor and a common voltage applied to the common electrode.
    Type: Grant
    Filed: January 31, 2019
    Date of Patent: November 24, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sangan Kwon, Junpyo Lee, Kyunho Kim, Sungjin Kim, Yong-Jin Shin, Neung-Beom Lee, Kyung-Hwa Lim, Jinhyuk Jang
  • Patent number: 10831087
    Abstract: An illumination system includes a blue light source, an excitation light source, a first light splitting element and a wavelength conversion element. The blue light source provides a blue light beam. The excitation light source provides an excitation light beam. The first light splitting element and the wavelength conversion element are disposed on transmission paths of the blue light beam and the excitation light beam. The wavelength conversion element includes a diffusion region and a wavelength conversion region. In a first timing period, the excitation light beam passing through the first light splitting element is transmitted to the wavelength conversion region to be converted into an excited light beam. In a second timing period, the blue light beam passing through the diffusion region is transmitted to the first light splitting element. The excited light beam includes a first red light beam and a green light beam.
    Type: Grant
    Filed: May 6, 2019
    Date of Patent: November 10, 2020
    Assignee: Coretronic Corporation
    Inventor: Haw-Woei Pan
  • Patent number: 10825401
    Abstract: A method, device of compensating viewing angle chromatic aberration of a display device, and a display device are provided, wherein the method includes the steps as follows: receiving an inputted image, looking-up each of pixel driving signals of the inputted image and obtaining a first driving signal and a second driving signal corresponded to each of pixels within two adjacent frames of the image individually, computing a mean value of the first driving signals and a mean value of the second driving signals individually, computing a mean value of the first the second driving signals in the same frame of the image individually, computing a brightness compensation signal required in a backlight module of a backlight region based on the computed mean values and a predetermined standard brightness signal; and compensating viewing angle chromatic aberration of post frames of the image based on the brightness compensation signal.
    Type: Grant
    Filed: September 1, 2017
    Date of Patent: November 3, 2020
    Assignees: HKC Corporation Limited, Chongqing HKC Optoelectronics Technology Co., Ltd.
    Inventor: Yu-Jen Chen
  • Patent number: 10818237
    Abstract: An OLED display device capable of improving picture quality by turning off an OLED element regardless of a charging time and input data of each subpixel is discussed. A reference voltage supplied to a reference line is supplied to an OLED element during at least one OLED off time after a light-emitting time and before a charging time according to control of a scan gate line and a sense gate line to turn off the OLED element. The reference voltage is lower than a threshold voltage of the OLED element.
    Type: Grant
    Filed: December 18, 2018
    Date of Patent: October 27, 2020
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Dong-In Noh, Young-Ho Kim
  • Patent number: 10818253
    Abstract: A display device comprises a display panel, a drive circuit configured to drive the display panel, a timing controller configured to control the drive circuit, and a power supply configured to output a supply voltage to the display panel. The timing controller is configured to output a vertical synchronization signal having an image display period and a blanking interval. The power supply is configured to vary a level of the supply voltage during the blanking interval of the vertical synchronization signal.
    Type: Grant
    Filed: August 30, 2016
    Date of Patent: October 27, 2020
    Assignee: LG Display Co., Ltd.
    Inventors: Nojin Park, Jeonga Lee, Jiwoong Park
  • Patent number: 10818230
    Abstract: A pixel circuit for a display device is operable in a compensation phase, a data programming phase, and an emission phase, whereby the one horizontal time is minimized while maintaining accurate compensation of the threshold voltage of the drive transistor, and noise applied to the gate of drive transistor during the emission phase is substantially eliminated. The pixel circuit includes a drive transistor configured to control an amount of current from a power supply to a light-emitting device during the emission phase depending upon a voltage input applied to a gate of the drive transistor, and a threshold voltage of the drive transistor is compensated during the compensation phase.
    Type: Grant
    Filed: June 3, 2019
    Date of Patent: October 27, 2020
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Tong Lu
  • Patent number: 10810939
    Abstract: A display device related to one embodiment of the present invention includes a plurality of pixel circuits each connected to a scanning signal line, initialization control signal line, light emitting control signal line and video signal line, wherein each of the plurality of pixel circuits includes a first transistor connected to the scanning signal line and the video signal line, a second transistor connected to a first node and the first transistor, a third transistor connected to the first node and a scanning signal line, a fourth transistor connected to the second transistor and the light emitting control signal line, and a fifth transistor connected to the second transistor, a power supply voltage line, and the light emitting control signal line.
    Type: Grant
    Filed: July 25, 2019
    Date of Patent: October 20, 2020
    Assignee: Japan Display Inc.
    Inventor: Ilin Wu
  • Patent number: 10796642
    Abstract: A display device includes first pixels in a first pixel area, a first scan driver configured to supply first scan signals to first scan lines, second pixels in a second pixel area, a second scan driver configured to supply second scan signals to second scan lines, third pixels in a third pixel area, a third scan driver configured to supply third scan signals to third scan lines, and a timing controller configured to supply a first start signal to the first scan driver, a second start signal to the second scan driver, and a third start signal to the third scan driver, wherein an order in which the first, second, and third start signal are supplied in a first mode, and an order in which the first, second, and third start signal are supplied in a second mode that is different from the first mode, are different from each other.
    Type: Grant
    Filed: January 8, 2018
    Date of Patent: October 6, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sang Moo Choi, Min Woo Byun, Chae Han Hyun, Min Kyu Woo, Jae Du Noh, Jae Sic Lee, Seung Yeon Cho
  • Patent number: 10789881
    Abstract: An organic light emitting diode (OLED) display device includes a display panel having a display region and a peripheral region, an OLED at the display region and including an end connected to a first voltage, a pixel circuit at the display region, a repair pixel circuit at the peripheral region, a repair line for connecting the repair pixel circuit to the OLED, and a switching circuit configured to apply a second voltage to the repair line during a power-up of the OLED display device.
    Type: Grant
    Filed: April 24, 2017
    Date of Patent: September 29, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventor: Kyong-Tae Park
  • Patent number: 10762814
    Abstract: A display panel and a testing method thereof, a display device are provided. The display panel includes a plurality of data lines and a plurality of test signal lines, an even number of adjacent data lines are grouped as a data line group, one test signal line is provided at a middle position of the data line group, a plurality of data line groups are in one-to-one correspondence with the plurality of test signal lines, each of the plurality of test signal lines includes a first extending part and a plurality of second extending parts coupled to the first extending part, and each of the second extending parts extends symmetrically at both sides of the first extending part.
    Type: Grant
    Filed: June 24, 2019
    Date of Patent: September 1, 2020
    Assignees: HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Qi Hu, Hui Jing, Weijing Liao
  • Patent number: 10755629
    Abstract: The disclosure discloses a display screen, a pixel driving method, and a display device. The display screen includes at least one display unit including a first pixel, a second pixel, and a comparator. A first input end of the comparator is coupled to a drive signal output end of the first pixel. The drive signal output end of the first pixel is used to output a first drive signal; a second input end of the comparator is coupled to a drive signal line, and the drive signal line is used to provide a second drive signal. The second drive signal is an undelayed signal. An output end of the comparator is coupled to a drive signal input end of the second pixel. The comparator is used to compare the first drive signal with the second drive signal and output a third drive signal. The third drive signal is an undelayed signal, and the third drive signal is used to drive the second pixel.
    Type: Grant
    Filed: June 14, 2018
    Date of Patent: August 25, 2020
    Assignee: YUNGU (GU'AN) TECHNOLOGY CO., LTD.
    Inventors: Liwei Ding, Rubo Xing, Qi Shan