Patents Examined by Long D Pham
  • Patent number: 11327537
    Abstract: An electronic device is disclosed, including: a printed circuit board, a first support member including a first surface and a second surface opposite to the first surface, the first support member defining a first hole formed through the first surface and the second surface, wherein the printed circuit board is coupled to the second surface, and a display coupled to the first surface of the first support member, the display defining: a second hole on a first side of the display to correspond to at least a portion of the first hole, and a third hole on a second side of the display opposite the first side, the third hole adjacent to the second hole and corresponding to the remaining portion of the first hole, wherein signal lines related to driving pixels of the display are disposed in an area between the second hole and the third hole, and wherein at least a partial area of the display is set as an active area configured to display a screen.
    Type: Grant
    Filed: January 30, 2020
    Date of Patent: May 10, 2022
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Woosung Chun, Dongil Son, Hyunwoo Sim, Seungbum Choi
  • Patent number: 11322071
    Abstract: An operational amplifier includes an input stage with a first main input unit, a first auxiliary input unit, a second main input unit and a second auxiliary input unit, an amplification stage with a first current mirror receiving currents from the first main input unit and the first auxiliary input unit, and a second current mirror receiving currents from the second main input unit and the second auxiliary input unit, an output stage receiving voltages from the first current mirror and the second current mirror, a voltage storage unit storing an intermediate voltage based on an output signal generated by the output stage during at least one of a first operation period and a second operation period, and a switching unit that differently controls a first feedback path between the output stage and the input stage and a second feedback path between the output stage to the voltage storage unit in accordance with the first operation period and the second operation period.
    Type: Grant
    Filed: November 5, 2020
    Date of Patent: May 3, 2022
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Kyunghoon Chung, Jaesung Kang, Jihyun Lee, Jeongwoo Lim, Yunseok Jang, Jaewon Choi
  • Patent number: 11315490
    Abstract: A pixel circuit, a driving method thereof and a display panel are disclosed. The pixel circuit includes a data writing circuit, a light-emitting drive circuit, and a voltage amplification circuit; the data writing circuit is electrically connected with a first node and is configured to write a data signal to the first node under control of a scan signal; two ends of the voltage amplification circuit are electrically connected with the first node and a second node respectively, and the voltage amplification circuit are configured to obtain an amplified voltage signal based on the data signal and write the amplified voltage signal to the second node; and the light-emitting drive circuit is electrically connected with the second node and is configured to drive a light-emitting component to emit light under control of the amplified voltage signal.
    Type: Grant
    Filed: December 29, 2018
    Date of Patent: April 26, 2022
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Guohong Qin, Xiaochuan Chen, Shengji Yang, Pengcheng Lu, Weihai Wang, Rongrong Shi
  • Patent number: 11315507
    Abstract: A display panel control method, a display panel control device, and a display panel. The control method comprises: obtaining a first polarity of a drive voltage of a first pixel column, a second polarity of a drive voltage of a green pixel column, and a third polarity of a drive voltage of a third pixel column (S10); when the second polarity is opposite to the first polarity and the third polarity, determining a voltage compensation value of each of green sub-pixels according to a preset common voltage value and the current common voltage value (S30); and reducing the corresponding first voltage according to each of the voltage compensation values (S40).
    Type: Grant
    Filed: December 6, 2019
    Date of Patent: April 26, 2022
    Assignee: HKC CORPORATION LIMITED
    Inventor: Liang Zhang
  • Patent number: 11308885
    Abstract: The disclosure relates to a display panel. The display panel may include a pixel unit group and a scanning circuit. The pixel unit group may include a first pixel unit and a second pixel unit. The scanning circuit may include a first scan signal terminal and a second scan signal terminal. The first scan signal terminal may be configured to simultaneously provide a same gate signal to the first pixel unit and the second pixel unit, and/or the second scan signal terminal may be configured to simultaneously provide a same light emitting control signal to the first pixel unit and the second pixel unit.
    Type: Grant
    Filed: June 28, 2019
    Date of Patent: April 19, 2022
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Tian Dong
  • Patent number: 11302267
    Abstract: A driving device and an operation method thereof are provided. The driver device includes a source driver circuit, an output switching circuit, and an equalization control circuit. Two input ends of the output switching circuit are coupled to two output ends of the source driver circuit. Two output ends of the output switching circuit are coupled to two data lines of an LED display panel. The equalization control circuit checks whether sub-pixel data of the two data lines meets a predetermined condition. A plurality of sub-pixels located on a current display line of the LED display panel are reset in a reset period. In a data scanning period after the reset period, the equalization control circuit determines whether to control the output switching circuit to perform an equalization operation on the two data lines according to the checking result.
    Type: Grant
    Filed: December 16, 2020
    Date of Patent: April 12, 2022
    Assignee: Novatek Microelectronics Corp.
    Inventors: Chun-Hung Chen, Chia-Hsin Tung, Hsin-Hung Ou, Hung-Yi Lin
  • Patent number: 11302759
    Abstract: A display device, a display panel and an OLED array substrate thereof are provided. As an example, the OLED array substrate includes a display driving chip and a display area, and the display area includes a non-transparent display area and a transparent display area. The non-transparent display area includes a plurality of first OLED pixels arranged in an array. The transparent display area includes a set of at least one column of second OLED pixels; A driving mode of the set of the at least one column of second OLED pixels is an active drive, and the set of the at least one column of second OLED pixels and the plurality of first OLED pixels are controlled by the display driving chip.
    Type: Grant
    Filed: September 30, 2020
    Date of Patent: April 12, 2022
    Assignee: KunShan Go-Visionox Opto-Electronics Co., Ltd.
    Inventors: Lu Zhang, Junhui Lou
  • Patent number: 11289023
    Abstract: A pixel driver circuit and a display panel are provided. The pixel driver circuit includes a control transistor, a first transistor, a fourth transistor, a light emitting device. A gate electrode of the control transistor receives first control signals, a source electrode of the control transistor receives data signals. A drain electrode of the control transistor is connected to a gate electrode of the first transistor and a gate electrode of the fourth transistor. A source electrode of the first transistor receives first power signals. A source electrode of the fourth transistor receives second power signals. Drain electrodes of the first transistor and fourth transistor are connected to an anode of the light emitting device. The first transistor and fourth transistor correspond to a first driving time period and a second driving time period alternated. The pixel driver circuit and display panel of the present invention enhance display effect.
    Type: Grant
    Filed: December 18, 2019
    Date of Patent: March 29, 2022
    Assignee: Shenzhen China Star Optoeleetronies Semiconductor Display Technology Co., Ltd.
    Inventors: Liuqi Zhang, Baixiang Han
  • Patent number: 11282426
    Abstract: A display device, including: pixels coupled to scan lines and data lines; a data driver configured to supply respective data signals to the data lines, including an amplifier disposed at an output terminal of the data driver, the amplifier including a first power terminal and a second power terminal; a switch unit configured to perform a power switching operation of alternately connecting the first power terminal and the second power terminal of the amplifier to a first driving power source and a second driving power source; and a driving controller configured to control the data driver and the switch unit, wherein the driving controller is configured to output a switch control signal to control the switch unit and interrupt the power switching operation during a blank period between source output periods, during which the data driver is configured to output the data signals of each frame.
    Type: Grant
    Filed: May 7, 2020
    Date of Patent: March 22, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jae Cheon Park, Seung Kyu Lee, Yoon Gyu Lee, Chae Han Hyun
  • Patent number: 11270645
    Abstract: The present disclosure provides an organic light emitting display device capable of sensing changes in characteristics due to a heat of an analogue-to-digital converting portion to convert sensing voltages corresponding to the threshold values into digital values with the threshold voltages when the threshold voltages of the driving transistors of an organic light emitting display panel are sensed in each horizontal line unit.
    Type: Grant
    Filed: December 11, 2020
    Date of Patent: March 8, 2022
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Mangyu Park, Zonggun Oh, Miso Kim
  • Patent number: 11263979
    Abstract: The present invention provides a method of driving a display panel and a driving device. The present invention determines sub-pixels shared by sub-pixel rendering technology through comparing differences of the color components, and the sub-pixels shared by the display image are not fixed. Since the sub-pixels with the smallest absolute value of the color component difference are selected for sharing, a contrast of an edge region of an image is improved, and distortion of an edge region of an image is reduced.
    Type: Grant
    Filed: December 3, 2019
    Date of Patent: March 1, 2022
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
    Inventor: Bo Yang
  • Patent number: 11263971
    Abstract: An organic light emitting display device includes a display panel, a display panel driver, and a power supply. The display panel includes pixels. Each of the pixels includes an organic light emitting diode configured to emit light in an emission period based on a first power supply voltage and a second power supply voltage. The display panel driver is configured to apply a scan signal, an emission control signal, and a data signal to the pixels. The power supply is configured to: generate the first power supply voltage, the second power supply voltage, and a third power supply voltage applied to the pixels in a non-emission period; and adjust a voltage level of the second power supply voltage and a voltage level of the third power supply voltage based on an ambient temperature and a brightness of the display panel.
    Type: Grant
    Filed: October 19, 2020
    Date of Patent: March 1, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Si Beak Pyo, Choon Yul Oh
  • Patent number: 11244634
    Abstract: A display device includes a plurality of pixels, a driving integrated circuit (IC) configured to generate a data voltage for driving the pixels, a display substrate including a display region in which the pixels are disposed and a driving IC region in which the driving IC is disposed, and a first power wire overlapping the driving IC region, wherein the first power wire is insulated from the driving IC, and the first power wire transmits a first power-supply voltage for driving the pixels.
    Type: Grant
    Filed: September 3, 2020
    Date of Patent: February 8, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hyun Lee, Dong Wook Kim
  • Patent number: 11244633
    Abstract: A method of driving a display panel includes dividing an input image into a plurality of segments, generating a flicker value of a segment of the plurality of segments, determining whether to compensate the flicker value of the segment or not according to a segment size, compensating the flicker value of the segment based on the segment size, determining a frame rate of the display panel based on the flicker value of the segment and outputting a data voltage to the display panel in the frame rate. The flicker value of the segment is compensated based on the flicker value of the segment and flicker values of segments that are adjacent to the segment.
    Type: Grant
    Filed: July 2, 2020
    Date of Patent: February 8, 2022
    Inventors: Sehyuk Park, Sangan Kwon, HongSoo Kim, Jinyoung Roh, Hyo Jin Lee
  • Patent number: 11244641
    Abstract: A device is applicable to a display driver, including a sampling circuit and a logic circuit. The sampling circuit is configured to sample a command signal by recording a plurality of command values of the command signal at different times. The plurality of command values corresponds to at least one data line of a pixel circuit. The logic circuit is electrically coupled to the sampling circuit, and is configured to receive the plurality of command values. The logic circuit is further configured to generate a filtered command signal according to the plurality of command values, and is configured to provide the filtered command signal to drive the pixel circuit.
    Type: Grant
    Filed: August 31, 2020
    Date of Patent: February 8, 2022
    Assignee: NOVATEK Microelectronics Corp.
    Inventors: Wei-Sheng Tseng, Wen-Sheng Chen
  • Patent number: 11238811
    Abstract: A stage and a scan driver having the same. The stage outputs a scan signal and a sensing signal to a scan line and a sensing line, respectively. The stage includes a first controller configured to control a voltage of a sensing node and a driving node based on first to third control signals and a carry signal of the stage and another stage connected to the stage, a second controller configured to control a voltage of an inversion driving node based on a first carry clock signal, the voltage of the driving node, and the third control signal, and a first output buffer configured to output a second carry clock signal or a second low potential power as the carry signal in correspondence with the voltage of the driving node and the inversion driving node.
    Type: Grant
    Filed: July 22, 2020
    Date of Patent: February 1, 2022
    Assignee: Samsung Display Co, Ltd.
    Inventors: Bo Yong Chung, Tak Young Lee, Sang Uk Lim
  • Patent number: 11227527
    Abstract: A display panel and a display device are disclosed. The display panel includes a number of sub-pixels formed in a display region. Each sub-pixel includes a light-emitting unit and a drive switch. Each light-emitting unit includes a first electrode, and the drive switch is electrically connected to the first electrode. The light-emitting units in the multiple sub-pixels form a pixel array including a number of pixel columns, and light-emitting units in at least one pixel column of the pixel array correspond to sub-pixels of at least two different colors. The drive switches in the multiple sub-pixels form a drive array including a number of drive columns. The drive array includes two drive columns in which, the drive switches electrically connected to light-emitting units of a same color are connected to a same data line.
    Type: Grant
    Filed: May 10, 2018
    Date of Patent: January 18, 2022
    Assignee: KUNSHAN GO-VISIONOX OPTO-ELECTRONICS CO., LTD.
    Inventor: Jianlong Wu
  • Patent number: 11227547
    Abstract: The present disclosure provides a pixel circuit, a pixel circuit driving method, and a display device. The display device can sense and store an original threshold voltage of a driving transistor in the turn-on stage by designing a pixel structure and detecting time sequence. An accrual threshold voltage of the driving transistor is read in an next turn-on stage according to a detected result in order to perform an internal compensation in real-time, and in order to sense and store a mobility of the driving transistor. As a result, unevenness of display can be improved.
    Type: Grant
    Filed: November 18, 2019
    Date of Patent: January 18, 2022
    Inventors: Zhen Wu, Zhenling Wang
  • Patent number: 11227537
    Abstract: A display device includes a timing controller configured to generate clock signals, a start signal, and image data. A scan driver includes a plurality of stages configured to sequentially output the clock signals as scan signals in response to the start signal. A data driver is configured to generate a data signal based on the image data. A display unit includes pixels configured to emit light with luminance corresponding to the data signal in response to the scan signal. The timing controller is to mask at least one of the clock signals in a first section, a second section, and a third section included in one frame section and spaced from each other.
    Type: Grant
    Filed: March 25, 2020
    Date of Patent: January 18, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Chang Noh Yoon, Hae Kwan Seo, Won Tae Kim
  • Patent number: 11217180
    Abstract: A display device includes: a display panel including a plurality of pixels; a power supply configured to provide a power supply voltage to the display panel; and a controller configured to control the power supply, the controller including: a motion calculation block configured to calculate a motion amount of image data based on the image data in a previous frame and the image data in a current frame, and to determine a motion gain based on the motion amount of the image data; a maximum gray determination block configured to determine a maximum gray level of the image data in the current frame; a voltage drop calculation block configured to calculate a voltage drop amount in the display panel; and a power supply voltage determination block configured to determine an initial voltage level of the power supply voltage.
    Type: Grant
    Filed: August 21, 2020
    Date of Patent: January 4, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventor: Seok Ha Hong