Patents Examined by Dorothy Harris
  • Patent number: 11521530
    Abstract: A display panel including a gate driver on array (GOA) circuit region is provided. The GOA circuit region includes cascaded n-staged GOA circuit units and N high-frequency clock signal lines; each of the staged GOA circuit units is electrically connected to one of the N high-frequency clock signal lines through a signal connection line; the display panel further includes at least two compensation unit groups, which are positioned in a region where the N high frequency clock signal lines are positioned. By setting a compensation unit in the region where the high-frequency clock signal lines are positioned, a problem of a wider GOA region is solved.
    Type: Grant
    Filed: May 9, 2020
    Date of Patent: December 6, 2022
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
    Inventor: Bangqing Xiao
  • Patent number: 11514873
    Abstract: A method of adjusting brightness of a display device is provided. The method includes steps of: generating a synchronization signal having a plurality of periods each of which is a frame time; determining bit values of dithering data according to target brightness data; and determining how many pulse waves in the pulse wave width modulation signal need to be modulated within the frame time according to the bit values of the dithering data, and accordingly modulating widths of the pulse waves of the pulse wave width modulation signal.
    Type: Grant
    Filed: March 28, 2022
    Date of Patent: November 29, 2022
    Assignee: ANPEC ELECTRONICS CORPORATION
    Inventors: Te-Sheng Chen, Che-Chang Chang, Yun-Li Liu
  • Patent number: 11508302
    Abstract: A method for a driver circuit configured to drive a display panel includes steps of: outputting a plurality of control signals according to a first control timing scheme to control a multiplexing circuit comprising a plurality of switches disposed in the display panel in a first operation mode; and outputting the plurality of control signals according to a second control timing scheme to control the multiplexing circuit in a second operation mode. Wherein, the first control timing scheme comprises a pre-charge period in which the plurality of switches of the multiplexing circuit are turned on, and the second control timing scheme comprises no pre-charge period.
    Type: Grant
    Filed: November 5, 2021
    Date of Patent: November 22, 2022
    Assignee: NOVATEK Microelectronics Corp.
    Inventors: Chieh-Hsiang Chang, Wen-Pin Tsai
  • Patent number: 11488530
    Abstract: The present application provides a pixel circuit, a driving method thereof and a display device. An anti-leakage transistor is added between the gate of the driving transistor and the initialization transistor and between the gate of the driving transistor and the compensation transistor. The anti-leakage transistor includes an active layer with oxide semiconductor. Low leakage property of a metal oxide transistor is utilized to suppress potential changes of the gate of the driving transistor during a light-emitting diode emits light.
    Type: Grant
    Filed: September 17, 2020
    Date of Patent: November 1, 2022
    Assignee: WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
    Inventors: Xuanyun Wang, Sunghwan Cho, Chao Dai
  • Patent number: 11488534
    Abstract: A display device includes: a low drop-out (“LDO”) regulator which provides a second power voltage to a power line during a first period of one frame; a buck converter which provides a first power voltage to the power line during a third period of the one frame; and a pixel connected to the LDO regulator and the buck converter through the power line. A voltage level of the second power voltage is equal to a voltage level of the first power voltage.
    Type: Grant
    Filed: September 15, 2021
    Date of Patent: November 1, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Byeong Doo Kang, Jung Taek Kim, Sung Mo Yang, Dong Ki Eun, Yoon Sup Kim, Yoon Ju Kim
  • Patent number: 11490182
    Abstract: A display device including a display panel configured to display an image; a touch sensing device configured to sense a touch of an object; a sound driver configured to generate and transmit a first sound driving signal and a second sound driving signal according to first sound data and second sound data; and a sound generator configured to generate a sound according to the first and second sound driving signals, such that a sound pressure level in a first frequency range is between first and second sound pressure levels in a first operating mode and a second operating mode, wherein the display device is in the first operating mode in response to the touch sensing device not sensing the touch of the object, and the display device is in the second operating mode in response to the touch sensing device sensing the touch of the object.
    Type: Grant
    Filed: August 1, 2019
    Date of Patent: November 1, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Yi Joon Ahn, Jung Hun Noh, Jae Woo Im
  • Patent number: 11482170
    Abstract: The display panel includes: a base substrate; a silicon semiconductor layer, the silicon semiconductor layer including active silicon layers of a driving transistor and an initialization transistor, each of the active silicon layers being provided with a first region, a second region and a first channel region therebetween; a first insulating layer, a first conducting layer, a second insulating layer and an oxide semiconductor layer, the oxide semiconductor layer including an active oxide layer of a voltage stabilizing transistor, the oxide semiconductor layer being provided with a third region, a fourth region and a second channel region therebetween. In the same sub-pixel, the second region of the active silicon layer of the initialization transistor is electrically connected to the third region, and the fourth region is electrically connected to a gate electrode of the driving transistor.
    Type: Grant
    Filed: May 9, 2020
    Date of Patent: October 25, 2022
    Assignee: BOE Technology Group Co., Ltd.
    Inventors: Yu Feng, Libin Liu, Lujiang Huangfu
  • Patent number: 11482168
    Abstract: A gate driving unit, a circuit, a display substrate, a display panel, and a display device are provided. The gate driving unit includes an Nth stage of shift register unit and an (N+1)th stage of shift register unit, N is a positive integer. The Nth stage of shift register unit includes an Nth stage of pull-up node control circuit, and the (N+1)th stage of shift register unit includes an (N+1)th stage of pull-up node control circuit. The Nth stage of pull-up node control circuit is electrically connected to an Nth stage of pull-up node and a control line, respectively, is configured to control a potential of the Nth stage of pull-up node under the control of a control signal inputted by the control line. The (N+1)th stage of pull-up node control circuit is electrically connected to an (N+1)th stage of pull-up node and the control line, respectively, and is configured to control a potential of the (N+1)th stage of pull-up node under the control of the control signal inputted by the control line.
    Type: Grant
    Filed: August 8, 2019
    Date of Patent: October 25, 2022
    Assignees: Hefei BOE Joint Technology Co., Ltd., Beijing BOE Technology Development Co., Ltd.
    Inventors: Xuehuan Feng, Yongqian Li
  • Patent number: 11475842
    Abstract: A display device includes a plurality of pixel electrodes, a plurality of gate lines, and a plurality of data lines. The pixel electrodes arranged in a matrix include a plurality of first color pixel electrodes. The gate lines are configured to sequentially provide a plurality of gate signals to the pixel electrodes in a plurality of line times. The data lines are configured to provide a plurality of the first data voltages and a plurality of the second data voltages to the first color pixel electrodes. The polarity of the first data voltages is opposite to the polarity of the second data voltages in the same frame. In each of the line times, the number of the first color pixel electrodes receiving the first data voltage is substantially equal to the number of the first color pixel electrodes receiving the second data voltages.
    Type: Grant
    Filed: November 22, 2019
    Date of Patent: October 18, 2022
    Assignee: AU OPTRONICS CORPORATION
    Inventor: Cheng-Kuang Wang
  • Patent number: 11468813
    Abstract: The present disclosure provides a method and device for driving a display panel. The method includes steps of: presetting a mapping database of correspondence between each of first voltages and a respective one of image refresh rates; sending a refresh rate adjustment instruction to a timing controller; switching the image refresh rate from the first image refresh rate to the second image refresh rate according to the refresh rate adjustment instruction, and sending a voltage adjustment instruction to a power driving chip; obtaining the first voltage according to the voltage adjustment instruction and the mapping database; obtaining the pixel driving voltage according to the preset correspondence between the first voltage and the pixel driving voltage; and adjusting the display panel according to the pixel driving voltage to change the operating current of each pixel.
    Type: Grant
    Filed: July 22, 2021
    Date of Patent: October 11, 2022
    Assignee: Everdisplay Optronics (Shanghai) Co., Ltd
    Inventors: JehYen Kang, Xiangshu Li, Zhouhui Xia, Keitaro Yamashita
  • Patent number: 11462160
    Abstract: An organic light emitting diode (OLED) display panel and a display device are provided. A first pixel driving circuit of the is configured to compensate a threshold voltage of a drive transistor in the bending area during a first time period before starting up or a second time period after shutting down. A second pixel driving circuit is configured to compensate a threshold voltage of a drive transistor in the non-bending area during a blank time period between adjacent display frames. A duration of the first time period and a duration of the second time period are both greater than a duration of the blank time period. A brightness of the display panel is uniform.
    Type: Grant
    Filed: June 10, 2020
    Date of Patent: October 4, 2022
    Assignee: WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
    Inventor: Zhenfei Cai
  • Patent number: 11455952
    Abstract: A display apparatus includes a first thin-film transistor including a semiconductor layer arranged on a substrate, a driving gate electrode arranged on the semiconductor layer, and a first electrode arranged between the substrate and the semiconductor layer, a second thin-film transistor transmitting a data signal received through a data line to the first thin-film transistor according to a first scan signal received through a first scan line, and a third thin-film transistor transmitting a first voltage to the first electrode according to a second scan signal received through a second scan line.
    Type: Grant
    Filed: October 29, 2020
    Date of Patent: September 27, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Keunwoo Kim, Doona Kim, Sangsub Kim, Dokyeong Lee, Jaehwan Chu
  • Patent number: 11450281
    Abstract: A stage and a scan driver including the same for supplying a scan signal using a stage formed of P-type transistors to prevent output of an unwanted noise in a period where the scan signal is not supplied.
    Type: Grant
    Filed: April 30, 2021
    Date of Patent: September 20, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Soo Hee Oh, Chui Kyu Kang, Dong Sun Lee, Sang Moo Choi
  • Patent number: 11450260
    Abstract: A display device includes a set period setting unit for setting, as a set time, a time for which a set period elapses from a time at which a first area included in an input image is detected as a still area, and a gain generator for gradually decreasing an initial level of a gain value down to a saturation level having a lowest value of the gain value from the set time. The set period setting unit differently sets the saturation level of the gain value and a final level of the gain value, corresponding to grayscale values of the first area and a load value of the input image. The load value is an average value of grayscale values of an entirety of an area of the input image.
    Type: Grant
    Filed: September 20, 2021
    Date of Patent: September 20, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hee Sook Park, Kyoung Ho Lim, Seung Ho Park, Jae Hoon Lee
  • Patent number: 11435838
    Abstract: A mouse includes a button portion, a deformable holding portion and a change-over switch. The button portion has a lower housing and an upper housing assembled to the lower housing. The upper housing has a first button and a second button. The deformable holding portion is connected to the button portion and includes a palm supporting area, a first and second electroactive material layers respectively disposed on two sides of the palm supporting area, and a first and second flexible material layers respectively covering the first and second electroactive material layers. The change-over switch is disposed on the lower housing. The change-over switch is selectively electrically connected to the first electroactive material layer or the second electroactive material layer.
    Type: Grant
    Filed: June 21, 2021
    Date of Patent: September 6, 2022
    Assignee: Chicony Electronics Co., Ltd.
    Inventor: Yi-Hung Wang
  • Patent number: 11430387
    Abstract: In a display device that performs external compensation, pixel circuits are classified into specific and general pixel circuits. When display is restarted, a current measurement circuit, along with a drive circuit, measures a current flowing through a drive transistor in the specific pixel circuit as a first current. A correction circuit obtains a recovery ratio for a characteristic of the drive transistor on the basis of an amount of the first current and corrects a video signal for each of the specific and general pixel circuits using the recovery ratio. Thus, when display is restarted, a suitably compensated image is displayed.
    Type: Grant
    Filed: March 29, 2019
    Date of Patent: August 30, 2022
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Hiroyuki Furukawa, Masafumi Ueno, Chie Toridono
  • Patent number: 11422689
    Abstract: An electronic device disclosed herein is adapted to determine a location of touch input when liquid is present. The electronic device may include a force detection assembly having force detection units. When a touch input is applied to the display layer, the force detection units generates a differential capacitance that is used to determine a location of the touch input. The electronic device may further include a confidence interval algorithm that uses the location and builds a confidence interval around the location. The electronic device may include a touch input components that can determine whether the liquid is present. The confidence interval algorithm determines whether the liquid is present within the confidence interval and provides an updated location of the touch input. The electronic device further includes a machine learning algorithm designed predict a software application the user intends to select using the touch input.
    Type: Grant
    Filed: August 9, 2018
    Date of Patent: August 23, 2022
    Assignee: APPLE INC.
    Inventors: Maegan K. Spencer, Tyler S. Bushnell
  • Patent number: 11423817
    Abstract: A display device includes a display panel and a panel driver. In a case where input image data represents a moving image with respect to a first partial region and represents a still image with respect to a second partial region, the panel driver performs a normal frequency driving operation on the first partial region, and performs a low frequency driving operation on the second partial region. In a standby mode, after the normal frequency driving operation and the low frequency driving operation are performed on the first partial region and the second partial region, respectively, the panel driver sets a portion of the second partial region adjacent to the first partial region as an adjacent region, performs the low frequency driving operation on the first partial region and the second partial region except for the adjacent region, and performs a variable frequency driving operation on the adjacent region.
    Type: Grant
    Filed: June 24, 2021
    Date of Patent: August 23, 2022
    Inventor: Sung Gon Jung
  • Patent number: 11417259
    Abstract: Disclosed are a driving method of a display device and a driving device is described. The driving method of a display panel includes that in response to determining that the display device enters a low power consumption state, controlling a light intensity detection component to detect in real time whether the display device is in a strong light environment; in a case where the display device is in the strong light environment, controlling a driver chip to adjust a picture refresh frequency to a first frequency; in a case where the display device is not in the strong light environment, determining a current gray scale of the display device according to a latest user setting instruction, determining an optimal refresh frequency according to the current gray scale and a corresponding relationship between a preset gray scale and the optimal refresh frequency.
    Type: Grant
    Filed: April 14, 2021
    Date of Patent: August 16, 2022
    Assignees: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD., WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCH
    Inventors: Shuai Yang, Xingyao Zhou, Yue Li, Mengmeng Zhang
  • Patent number: 11415798
    Abstract: An augmented reality (AR) device including at least one optical module is provided. Each of the at least one optical module sequentially includes a transparent display, a first lens, a second lens, and a third lens from a display side to an eye side. The first lens has a negative refractive power. The second lens has a negative refractive power. The third lens has a positive refractive power. The number of lenses of the optical module having refractive powers is three, wherein the transparent display of the optical module is configured to emit a light beam, and the light beam sequentially passes through the first lens, the second lens, and the third lens to be incident into a user's eyes at the eye side, so that an AR virtual image on the display side is seen by the eyes.
    Type: Grant
    Filed: March 8, 2019
    Date of Patent: August 16, 2022
    Assignees: Industrial Technology Research Institute, Intellectual Property Innovation Corporation
    Inventors: Shin-Hong Kuo, Yi-Shou Tsai, Yu-Hsiang Tsai, Kuan-Ting Chen