Patents Examined by Michael J Jansen, II
  • Timing controller, display panel and related driving method thereof
    Patent number: 11514870
    Abstract: A timing controller, a display panel and a driving method are proposed. The display panel includes a display sub-pixel and a virtual sub-pixel. The display sub-pixel includes first sub-pixels, second sub-pixels and third sub-pixels. If the grayscale information of the two adjacent first sub-pixels are the same, then a driving signal of the virtual sub-pixel is the same as a driving signal of a third sub-pixel close to the virtual sub-pixel; otherwise, the driving signal of the virtual sub-pixel is the same as a driving signal of the third sub-pixels, which are outnumbered in the histogram.
    Type: Grant
    Filed: May 19, 2020
    Date of Patent: November 29, 2022
    Assignee: TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Guangxing Xiao
  • Display apparatus
    Patent number: 11508303
    Abstract: A display apparatus is provided to include a pixel array composed of a plurality of pixels. Each pixel includes a pulse-generating unit producing a first pulse and a second pulse with opposite phases; a first switching unit; a light-emitting unit; and a second switching unit. The first switching unit, the light-emitting unit, and the second switching unit are connected in series, the first switching unit is controlled by the first pulse, and the second switching unit is controlled by the second pulse, and the first switching unit and the second switching unit are configured to be turned on or turned off synchronously.
    Type: Grant
    Filed: January 20, 2022
    Date of Patent: November 22, 2022
    Assignee: SeeYA Optronics Co., Ltd.
    Inventor: Zhongshou Huang
  • Display panel driving device
    Patent number: 11508274
    Abstract: The present disclosure relates to a technique for determining a fault of a data line disposed in a display panel using a data driving device. The data driving device may determine a fault of a data line by supplying a data voltage corresponding to a greyscale value to a data line and checking whether another data line is influenced by the data voltage.
    Type: Grant
    Filed: June 24, 2021
    Date of Patent: November 22, 2022
    Assignee: Silicon Works Co., Ltd.
    Inventor: Jung Min Choi
  • Display device and operating method thereof
    Patent number: 11488546
    Abstract: A driving controller of a display device includes a timer which counts an operation time and outputs a count signal, a memory which stores compensation data, a control signal generation part which receives the compensation data from the memory in response to the count signal and outputs a compensation data signal corresponding to the compensation data, and an image processor which converts an image signal into a data signal and outputs the data signal, where the data signal is obtained by combining the image signal and the compensation data signal. The compensation data includes first compensation data corresponding to a first operation time and second compensation data corresponding to a second operation time which is different from the first operation time.
    Type: Grant
    Filed: December 3, 2020
    Date of Patent: November 1, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventor: Kyung-Hun Lee
  • Driving circuit, method for determining connection information of driving circuit and display device
    Patent number: 11488504
    Abstract: A driving circuit includes a gamma chip configured to provide a plurality of initial binding point voltages; the gamma chip including a first type of output terminals and a second type of output terminals, currents corresponding to the initial binding point voltages outputted by the first type of output terminals being less than a preset driving current; and currents corresponding to the initial binding point voltages outputted by the second type of output terminals being greater than the preset driving current; and a data driving chip including a processor and a plurality of operational amplifiers.
    Type: Grant
    Filed: May 6, 2020
    Date of Patent: November 1, 2022
    Assignees: Chongqing HKC Optoelectronics Technology Co., Ltd., HKC Corporation Limited
    Inventor: Li Tang
  • Providing a baseline capacitance for a capacitance sensing channel
    Patent number: 11481066
    Abstract: A capacitance-sensing circuit may include a channel input associated with measuring a capacitance of a unit cell of a capacitive sense array. The capacitance-sensing circuit may also include a capacitive hardware baseliner that is coupled to the channel input. The capacitive hardware baseliner generates a baseline current based on a time constant of the channel input associated with the measuring of the capacitance of the element of the capacitive sense array using the programmable baseline resistor. The capacitive hardware baseliner provides the baseline current at the channel input to provide a charge for a sense capacitor. A change in the charge of the sense capacitor is provided by the baseline current indicating a presence of a tough object proximate to the element.
    Type: Grant
    Filed: June 30, 2021
    Date of Patent: October 25, 2022
    Assignee: Cypress Semiconductor Corporation
    Inventors: Denis Ellis, Kaveh Hosseini, Timothy Williams, Gabriel Rowe, Roman Ogirko, Brendan Lawton
  • Scan driver and a display device including the same
    Patent number: 11468845
    Abstract: A scan driver including a stage that includes: an input circuit controlling a voltage of a first node in response to signals at first and second input terminals; a first signal processing circuit controlling a voltage of a second node in response to the signal at the first input terminal and supplies a voltage of a first power to the second node in response to the signal at the second input terminal; a second signal processing circuit supplying a voltage of a second power to the first node in response to a signal at a third input terminal and the voltage of the second node; a first output circuit outputting the signal at the third input terminal as a first scan signal; and a second output circuit outputting a signal at a fourth input terminal as a second scan signal at a different time from the first scan signal.
    Type: Grant
    Filed: February 10, 2021
    Date of Patent: October 11, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Sung Hwan Kim, Eun Ju Kim
  • Pixel circuit, driving method thereof and display device
    Patent number: 11468825
    Abstract: The present disclosure provides a pixel circuit including: a current control circuit and a time control circuit, the time control circuit includes: a first resetting sub-circuit configured to write a reference voltage and a first initialization voltage to a first node and a second node, respectively; a first data writing sub-circuit configured to write a first data voltage to the first node; a first threshold compensation sub-circuit configured to perform threshold compensation on a transistor within a switch sub-circuit; a ramp writing sub-circuit configured to write a preset ramp signal to the first node; and the switch sub-circuit configured to control electrical coupling and decoupling between a third node and a fourth node. The present disclosure further provides a driving method of the pixel circuit and a display device.
    Type: Grant
    Filed: March 17, 2020
    Date of Patent: October 11, 2022
    Assignee: BEIJING BOE TECHNOLOGY DEVELOPMENT CO., LTD.
    Inventors: Minghua Xuan, Qi Qi, Jing Liu, Han Yue, Dongni Liu
  • Methods for achieving color states of lesser-charged particles in electrophoretic medium including at least four types of particles
    Patent number: 11462182
    Abstract: Methods for driving an electrophoretic medium including two pairs of oppositely charged particles. The first pair including a first type of positive particles and a first type of negative particles and the second pair consists of a second type of positive particles and a second type of negative particles, wherein the first pair of particles and the second pair of particles have different charge magnitudes (identifiable as zeta potentials). In particular, the driving methods produce cleaner optical stakes of the lesser-charged particles with less contamination from the other particles and more consistent electro-optical performance when the intermediate driving voltages are modified.
    Type: Grant
    Filed: June 3, 2021
    Date of Patent: October 4, 2022
    Assignee: E Ink California, LLC
    Inventors: Craig Lin, Feng-Shou Lin
  • Correction method for display panel and display device
    Patent number: 11455966
    Abstract: The present application relates to a correction method for a display panel and a display device, including: after dividing a common electrode layer of a display panel into at least one region, applying corresponding initial voltage to each region and measuring the initial voltages; and then according to a preset voltage, firstly coarsely adjusting the initial voltage of a color shift region, and then finely adjusting a data voltage of a sub-pixel corresponding to each sub-pixel in the color shift region.
    Type: Grant
    Filed: January 9, 2019
    Date of Patent: September 27, 2022
    Assignee: HKC CORPORATION LIMITED
    Inventor: Bin Qiu
  • Pixel driving circuit, display device and operating method thereof
    Patent number: 11455953
    Abstract: A display device includes pixel driving circuits. A first pixel driving circuit includes a light emitting element, first and second driving units and a control unit. The light emitting element emits light according to a current. The first driving unit generates the current. The second driving unit drives the first driving unit to adjust the current according to a first scanning signal. The control unit controls the first driving unit to adjust the current according to a first light emitting signal. The first scanning signal has first slope to third slopes during first to third periods, respectively. The first to third slopes are different from each other. The first light emitting signal has an enable voltage level during the first and third periods, and has a disable voltage level during the second period. The first to third periods are arranged continuously in order.
    Type: Grant
    Filed: October 29, 2021
    Date of Patent: September 27, 2022
    Assignee: AU OPTRONICS CORPORATION
    Inventors: Peng-Bo Xi, Chen-Chi Lin
  • Display device
    Patent number: 11450279
    Abstract: The embodiments relate to a display device that includes an input terminal through which a feedback voltage of a high-potential driving voltage is received from a display panel. An output terminal is included through which a high reference voltage and a low reference voltage generated on the basis of the feedback voltage are output. A flexible printed circuit board (FPCB) includes at least one capacitor connected between the input terminal and the output terminal.
    Type: Grant
    Filed: December 29, 2020
    Date of Patent: September 20, 2022
    Assignee: LG Display Co., Ltd.
    Inventors: Wonsuk Lee, Joonmo Yang
  • Display device
    Patent number: 11450282
    Abstract: A display device includes: a dummy data unit connected to one end portion of a data line, where the dummy data unit supplies a dummy data signal to the data line; a sensing unit connected to an opposing end portion of the data line, where the sensing unit determines a load of the data line based on the dummy data signal supplied thereto through the data line; and a timing controller which controls a supply timing of a data signal to be supplied to the data line, based on the load.
    Type: Grant
    Filed: March 18, 2021
    Date of Patent: September 20, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Chae Hee Park, Jong Soo Kim
  • Liquid crystal display device and display system
    Patent number: 11443708
    Abstract: A liquid crystal display device includes: a liquid crystal panel having pixels with a first electrode and a second electrode; a control circuit; and a counter. The number and an arrangement of pixels where a potential of the second electrode is higher than that of the first electrode in a first mode equal the number and an arrangement of pixels where the potential of the first electrode is higher than that of the second electrode in a second mode. The counter increases a count while the panel operates in the first mode, and decreases the count while the panel operates in the second mode. The control circuit operates the panel in the first mode when the count at a determination timing is not greater than a first threshold, and operates the panel in the second mode when the count at the determination timing is not less than a second threshold.
    Type: Grant
    Filed: June 9, 2021
    Date of Patent: September 13, 2022
    Assignee: Japan Display Inc.
    Inventors: Tomoyuki Ishihara, Kazuhiko Sako
  • Level shift circuit and source driver including the same
    Patent number: 11436963
    Abstract: The present disclosure discloses a source driver including a level shift circuit. The source driver may include a level shift circuit outputting second and third logic signals by shifting a level of a first logic signal and a multiplexer transferring a first or second source signal to a first or second pad in response to the second and third logic signals. The level shift circuit may include a first level shifter outputting first and second input signals by shifting the level of the first logic signal, a second level shifter outputting third and fourth input signals by shifting the level of the first logic signal, and an output circuit outputting the second logic signal in response to the second and fourth input signals and outputting the third logic signal in response to the first and third input signals.
    Type: Grant
    Filed: March 17, 2021
    Date of Patent: September 6, 2022
    Assignee: Silicon Works Co., Ltd
    Inventors: Goon Seok Oh, Hyo Joong Kim
  • Driving method and system of display panel, and display device
    Patent number: 11423854
    Abstract: The present application discloses a driving method and driving system of a display panel, and a display device. The driving method includes: converting the first color signal to obtain a first HSV (hue, saturation, value) spatial signal; obtaining a second HSV spatial signal; reducing the minimum value of the first brightness normalized signals according to the second HSV spatial signal to obtain second brightness normalized signals; converting the second brightness normalized signals to obtain a second color signal; and driving the display panel using the second color signal.
    Type: Grant
    Filed: March 9, 2020
    Date of Patent: August 23, 2022
    Assignees: CHONGQING HKC OPTOELECTRONICS TECHNOLOGY CO., LTD., HKC CORPORATION LIMITED
    Inventor: Jianfeng Shan
  • Gate driver circuit of display panel, driving method therefor and display device
    Patent number: 11423824
    Abstract: The present application discloses a gate driver circuit of a display panel, a driving method therefor and a display circuit. The gate driver circuit of a display panel includes a multi-stage cascaded shift register, where an any-stage shift register includes: a charging circuit, a pull-down circuit for controlling to pull down a potential of an output terminal of the charging circuit to a low level in a non-scanning time, and an output control circuit electrically coupled to the output terminal of the charging circuit for receiving an initial gate scanning signal; the output control circuit is connected to an enable signal and controls the output of the gate scanning signal according to the enable signal.
    Type: Grant
    Filed: June 10, 2021
    Date of Patent: August 23, 2022
    Assignees: CHUZHOU HKC OPTOELECTRONICS TECHNOLOGY CO., LTD., HKC CORPORATION LIMITED
    Inventors: Yunqin Hu, Lidan Ye
  • Liquid crystal display apparatus and method of manufacturing the same
    Patent number: 11417290
    Abstract: A liquid crystal display apparatus includes a shift register unit that sequentially takes in a video signal including s-bit width for the number of columns of a plurality of pixels, a 1-line latch unit that concurrently outputs a plurality of the video signals taken by the shift register unit, comparator units that convert the plurality of video signals output from the 1-line latch unit into a plurality of analog voltages, respectively, and an analog switch unit that switches whether or not the plurality of analog voltages are supplied to the plurality of data lines, respectively.
    Type: Grant
    Filed: June 4, 2021
    Date of Patent: August 16, 2022
    Assignee: JVCKENWOOD CORPORATION
    Inventor: Takayuki Iwasa
  • Systems and methods for measuring visual refractive error
    Patent number: 11402635
    Abstract: A method may include displaying, to a user, a first color in a first area and a second color in a second area, where (1) the second color has a longer wavelength than the first color and (2) the first and second color have an expected longitudinal chromatic aberration for a human eye. The method may also include receiving, from the user, an indication of whether the user perceives (1) the first area as being clearer than the second area or (2) the second area as being clearer than the first area. The method may further include determining, based on the indication of the user and the expected longitudinal chromatic aberration, information about a refractive error of the user's vision. Various other methods, systems, and devices are also disclosed.
    Type: Grant
    Filed: May 24, 2018
    Date of Patent: August 2, 2022
    Assignee: Facebook Technologies, LLC
    Inventors: Marina Zannoli, Kristen Bowles, Ryan Michael Ebert, Douglas Robert Lanman, Kevin James MacKenzie
  • Driving circuit and liquid crystal display device
    Patent number: 11404020
    Abstract: The present disclosure provides a driving circuit and a liquid crystal display device. The driving circuit is configured to drive the liquid crystal to display and includes liquid crystal driving chips configured to receive original Gamma voltage; a time sequence control chip configured to receive the original Gamma voltages transmitted by the liquid crystal driving chips and output Gamma voltage adjust correcting parameters to the liquid crystal driving chips; the liquid crystal driving chip compensating and correcting the original Gamma voltage according to the Gamma voltage adjust correcting parameters to make Gamma voltages of each of the liquid crystal driving chips equal.
    Type: Grant
    Filed: December 10, 2019
    Date of Patent: August 2, 2022
    Inventor: Jinfeng Liu