Field Period Polarity Reversal Patents (Class 345/209)
  • Patent number: 11977302
    Abstract: A cholesteric liquid crystal display device and a driving method for improving non-uniform image quality of the cholesteric liquid crystal display device. The cholesteric liquid crystal display device includes a cholesteric liquid crystal display panel and a liquid crystal drive unit. The cholesteric liquid crystal display panel is composed of multiple row circuit structures and multiple column circuit structures. The liquid crystal driving unit sequentially outputs column driving voltages to a plurality of column circuit structures in a scanning manner. After scanning the multiple column circuit structures, the liquid crystal driving unit applies an unselected voltage to the multiple column circuit structures together with more than 18 times the scanning unit time course, so as to make the brightness of the overall picture more uniform.
    Type: Grant
    Filed: December 8, 2022
    Date of Patent: May 7, 2024
    Assignee: IRIS OPTRONICS CO., LTD.
    Inventors: Ming-Liang Tsai, Wu-Chang Yang, Chi-Chang Liao
  • Patent number: 11823637
    Abstract: A timing control circuit is provided to control a data voltage outputted to a pixel array of a display panel during a frame period to perform a polarity reversal every N scan lines, where N is a positive integer. The timing control circuit includes a receiver and an adjustment circuit. The receiver is configured to sequentially receive first display data and second display data for one data line of the display panel. The adjustment circuit is coupled to the receiver to adjust at least one of gray information of the second display data and charging time of the second display data according to a voltage polarity of the first display data and a voltage polarity of the second display data. A corresponding operation method of the timing control circuit is also provided.
    Type: Grant
    Filed: December 29, 2021
    Date of Patent: November 21, 2023
    Assignee: Novatek Microelectronics Corp.
    Inventors: Yi-Tsung Lin, Yen-Tao Liao
  • Patent number: 11803027
    Abstract: The present invention provides a circuit for controlling a voltage for driving liquid lens including a first voltage generator for outputting a first voltage; a second voltage generator for outputting a second voltage having an opposite polarity to the first voltage; a first switch for selecting one of the first voltage and a ground voltage, and transmitting the selected voltage; a second switch for selecting one of the second voltage and the ground voltage, and transmitting the selected voltage; and a third switch for selecting one of a voltage selected by the first switch and the voltage selected by the second switch, and transmitting the selected voltage, wherein the third switches is plural in number, and the first switch is connected in common to the plurality of third switches.
    Type: Grant
    Filed: December 30, 2020
    Date of Patent: October 31, 2023
    Assignee: LG INNOTEK CO., LTD.
    Inventor: Young Seop Moon
  • Patent number: 11640087
    Abstract: According to one embodiment, a display device includes a first substrate, a second substrate opposing the first substrate, a liquid crystal layer disposed between the first substrate and the second substrate and a sealant which seals the liquid crystal layer. The first substrate includes a pixel electrode disposed in a display area, a peripheral circuit disposed in a peripheral area surrounding the display area and a shield electrode disposed in a position overlapping the peripheral circuit in plan view. The second substrate includes a common electrode disposed in the display area and opposing the pixel electrode. The shield electrode and the common electrode do not overlap each other in plan view.
    Type: Grant
    Filed: June 2, 2022
    Date of Patent: May 2, 2023
    Assignee: Japan Display Inc.
    Inventor: Koichiro Adachi
  • Patent number: 11551628
    Abstract: Disclosed are a driving method including: acquiring a first preset scanning driving signal, a second preset scanning driving signal and a preset data driving signal, and shortening the driving time of the second preset scanning driving signal so as to shorten the driving time of the second preset scanning driving signal compared to the driving time of the preset data driving signal. The even-numbered column pixels in the first row and the odd-numbered column pixels in the second row in the driving period are driven by a first preset scanning driving signal, and the odd-numbered column pixels in the first row and the even-numbered column pixels in the second row in the driving period are driven by a second preset scanning driving signal.
    Type: Grant
    Filed: February 26, 2019
    Date of Patent: January 10, 2023
    Assignee: HKC CORPORATION LIMITED
    Inventor: Jianfeng Shan
  • Patent number: 11545093
    Abstract: A shift register, a gate driving circuit and a gate driving method are provided. The shift register includes: a display pre-charging reset circuit, a display noise reduction circuit and an output circuit, the output circuit is provided with at least one signal output terminal, and includes at least one output sub-circuit; the display pre-charging reset circuit is configured to write a first scanning voltage into a pull-up node in response to a control of a first signal input terminal; and write a second scanning voltage into the pull-up node in response to a control of a second signal input terminal; the display noise reduction circuit is configured to write the second scanning voltage into a pull-down node in response to the control of the first signal input terminal; and write the first scanning voltage into the pull-down node in response to the control of the second signal input terminal.
    Type: Grant
    Filed: January 22, 2021
    Date of Patent: January 3, 2023
    Assignees: Hefei BOE Joint Technology Co., Ltd., BEIJING BOE TECHNOLOGY DEVELOPMENT CO., LTD.
    Inventors: Xuehuan Feng, Yongqian Li
  • Patent number: 11393426
    Abstract: A display and a driving device and method for display panel thereof are provided. The driving method comprises: determining corresponding first high voltage data according to first initial driving data of a first target pixel, and determining corresponding first low voltage data according to second initial driving data of a second target pixel; determining first target high voltage driving data according to the first high voltage data, and determining first target low voltage driving data according to the first low voltage data; and driving the first target pixel with the first target high voltage driving data, and driving the second target pixel with the first target low voltage driving data.
    Type: Grant
    Filed: December 12, 2019
    Date of Patent: July 19, 2022
    Assignee: HKC CORPORATION LIMITED
    Inventor: Jianfeng Shan
  • Patent number: 11335237
    Abstract: A pixel circuit including a drive transistor and a capacitor electrically connected to a control terminal of the drive transistor, a light-emitting element, a first power supply voltage line intersecting a data signal line, and a second power supply voltage line electrically connected to the control terminal via the capacitor are provided, and in a writing period in which a scanning signal line becomes active, the first power supply voltage line and a second conduction terminal of the drive transistor are not conductive with each other, and in a light emission period of the light-emitting element, the first power supply voltage line and the second conduction terminal of the drive transistor are conductive with each other.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: May 17, 2022
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Tohru Okabe, Takeshi Yaneda
  • Patent number: 11308903
    Abstract: A source driving device, a polarity reversal control method thereof, and a liquid crystal display device. In the source driving device, a polarity signal control unit is added, and an output terminal of the polarity signal control unit is connected to control terminals of a first channel selection circuit and a second channel selection circuit in a positive-negative polarity reversal control unit, respectively. Polarity reversal condition of the polarity reversal control signal outputted by the polarity signal control unit is controlled using a trigger control signal inputted to a control terminal of the polarity signal control unit.
    Type: Grant
    Filed: October 10, 2017
    Date of Patent: April 19, 2022
    Assignees: BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Hengzhen Liang
  • Patent number: 11302719
    Abstract: A thin film transistor substrate includes: a plurality of gate signal lines extending in a first direction; a plurality of gate lead-out lines and a plurality of dummy gate lead-out lines extending in a second direction; a plurality of common lines extending in at least one of the first direction and the second direction in the pixel region; and a common electrode provided opposite to a pixel electrode and electrically connected to the plurality of common lines. The plurality of gate lead-out lines are connected to the gate signal lines at least at one point of a plurality of intersections between the plurality of gate signal lines and the plurality of gate lead-out lines, and the common potential is applied to the plurality of dummy gate lead-out lines.
    Type: Grant
    Filed: November 25, 2019
    Date of Patent: April 12, 2022
    Assignee: PANASONIC LIQUID CRYSTAL DISPLAY CO., LTD.
    Inventors: Yugo Takeda, Masafumi Hirata, Hiroaki Iwato
  • Patent number: 11276363
    Abstract: A display driving control circuit, a display panel, and a driving control method are disclosed. A driving control sub-circuit in the display driving control circuit includes a first data selection sub-circuit, a second data selection sub-circuit, a third data selection sub-circuit, and a fourth data selection circuit. The first data selection sub-circuit, the second data selection sub-circuit, the third data selection sub-circuit, and the fourth data selection circuit are electrically connected to a first selection signal line respectively. The first data selection sub-circuit and the third data selection sub-circuit are electrically connected to a first data channel signal line, and the second data selection sub-circuit and the fourth data selection sub-circuit are electrically connected to a second data channel signal line.
    Type: Grant
    Filed: September 19, 2019
    Date of Patent: March 15, 2022
    Assignees: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yafei Li, Zijiao Xue, Lukang Li, Xiaojing Wang, Xin Duan, Lingyun Shi, Xiurong Wang
  • Patent number: 11227559
    Abstract: A display panel, a display device and a driving method are provided. In the display panel, subpixels input with a first voltage data signal and subpixels input with a second voltage data signal are alternately arranged, and among the subpixels with a same color in a same row, the number of the subpixels input with the first voltage data signal with a positive polarity is equal to the number of the subpixels input with the first voltage data signal with a negative polarity; two adjacent pixel groups in a same column adopt contrary polarity driving manners.
    Type: Grant
    Filed: January 15, 2018
    Date of Patent: January 18, 2022
    Assignee: HKC CORPORATION LIMITED
    Inventor: Huai Liang He
  • Patent number: 11205373
    Abstract: A display apparatus and a method of controlling thereof are provided. The display apparatus may include a display including a plurality of light emitting diode (LED) devices, a driver configured to drive the plurality of LED devices, and a controller configured to control the driver to apply an image signal to each of a plurality of scan lines, and apply a first image signal to a first image frame period in a first scan line among the plurality of scan lines and apply the first image signal to a second image frame period in a second scan line among the plurality of scan lines.
    Type: Grant
    Filed: April 22, 2020
    Date of Patent: December 21, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Jaehyang Lee
  • Patent number: 11176900
    Abstract: A display device that is suitable for increasing in size is achieved. Three or more source lines are provided for each pixel column. Video signals having the same polarity are input to adjacent source lines during one frame period. Dot inversion driving is used to reduce a flicker, crosstalk, or the like.
    Type: Grant
    Filed: January 12, 2021
    Date of Patent: November 16, 2021
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Hajime Kimura
  • Patent number: 11164527
    Abstract: A processing system comprises a plurality of output terminals connectable to data lines of a display panel and a plurality of output amplifiers configured to output a plurality of drive voltages, respectively. The drive voltages have the same polarity. The processing system further comprises first switch circuitry configured to connect a first output terminal of the plurality of output terminals to a selected one of the plurality of output amplifiers.
    Type: Grant
    Filed: March 10, 2020
    Date of Patent: November 2, 2021
    Assignee: Synaptics Incorporated
    Inventor: Toshiyuki Hikichi
  • Patent number: 11127343
    Abstract: A display device includes a light-emitting diode including a first conductivity-type semiconductor, an active layer, and a second conductivity-type semiconductor; a first voltage line to which a first voltage is applied; a second voltage line to which a second voltage is applied; a first transistor including a source electrode electrically connected to the first voltage line and a drain electrode electrically connected to a first electrode of the light-emitting diode and to the first conductivity-type semiconductor; a second transistor including a drain electrode electrically connected to a gate electrode of the first transistor and a source electrode electrically connected to a data line to apply a data signal; a capacitor electrically connected to the gate electrode of the first transistor and the first electrode; and a third transistor including a source electrode electrically connected to the second voltage line and a drain electrode electrically connected to the first electrode.
    Type: Grant
    Filed: January 8, 2020
    Date of Patent: September 21, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Min Jae Jeong, Kyung Bae Kim, Chong Chul Chai, Kyung Hoon Chung
  • Patent number: 11032855
    Abstract: Systems, devices, and methods are disclosed for wireless communication of analyte data. In this regard, in embodiments, a mobile includes a transceiver configured to transmit and receive wireless signals. The mobile device includes circuitry operatively coupled to the transceiver. The mobile device also includes a non-transitory computer-readable medium operatively coupled to the circuitry and storing instructions that, when executed, cause the mobile device to perform a number of operations. One such operation is to obtain a derivative of a first signal received via a first link. Another such operation is to obtain a derivative of a second signal received via a second link; and. Yet another such operation is to generate a selection for connection to an analyte sensor system, based on a comparison of the derivative of the first signal and the derivative of the second signal.
    Type: Grant
    Filed: October 12, 2017
    Date of Patent: June 8, 2021
    Assignee: DexCom, Inc.
    Inventors: Aditya Mandapaka, Douglas William Burnette, Hari Hampapuram, Francis William Pascual, James Stephen Amidei, Darin Edward Chum Dew, Apurv Ullas Kamath, Nathanael Paul, William A. Pender, Michael A. Ploof
  • Patent number: 11011088
    Abstract: A shift register unit, a driving method, a gate drive circuit and a display device are provided. The shift register unit includes: an input sub-circuit used to control an electric potential of the pull-up node, an output sub-circuit used to input a first clock signal from a first clock signal terminal to the output terminal, a pull-down control sub-circuit used to control an electric potential of the pull-down node, a pull-down sub-circuit used to control electric potentials of the pull-up node and the output terminal, a first reset control sub-circuit used to control an electric potential of the second control node under control of the first control node and a reset signal from the reset signal terminal and a reset sub-circuit used to control the electric potential of the pull-up node. The shift register unit improves the noise reduction efficiency at the output terminal.
    Type: Grant
    Filed: September 10, 2018
    Date of Patent: May 18, 2021
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., HEFEI BOE OPTOELECTRONICS TECHNOLOGY GROUP CO., LTD.
    Inventors: Liqing Liao, Hongmin Li, Dong Wang, Fengjing Tang
  • Patent number: 11002983
    Abstract: A three-dimensional (3D) image can be rendered by selectively transmitting a left-eye image and a right-eye image from a display panel in a manner of forming a transmitting electrode and a blocking electrode of the same layer on a switching parallax barrier and selectively applying a voltage to the transmitting electrode and the blocking electrode.
    Type: Grant
    Filed: April 28, 2020
    Date of Patent: May 11, 2021
    Assignee: LG DISPLAY CO., LTD.
    Inventors: ChungHwan An, JaeWoo Lee, BoGyun Chung
  • Patent number: 10996529
    Abstract: An array substrate includes plural sub-pixels in plural rows and plural columns; plural data ports; Ndl data lines, each of the Ndl data lines connecting to a column of sub-pixels, the Ndl data lines being divided into plural groups, each group including N data lines; and a multiplexer including M control lines and plural switching units in one-to-one correspondence with the Ndl data lines, each control line being connected to and controlling Ndl M switching units. All of the N data lines in each group are connected to one data port through N switching units, respectively, the data lines in different groups are connected to different data ports, the N switching units corresponding to each group are controlled by N different control lines, respectively, and at least two of the N data lines in each group are provided with a data line another group therebetween.
    Type: Grant
    Filed: December 12, 2018
    Date of Patent: May 4, 2021
    Assignees: ORDOS YUANSHENG OPTOELECTRONICS CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yun Qiao, Zhen Wang, Wei Wang, Fei Huang, Han Zhang, Peng Liu
  • Patent number: 10971093
    Abstract: A pixel circuit includes a storage capacitor, a first switch, and a second switch. The first switch is electrically connected to a first end of the storage capacitor, and configured to provide a data voltage to the first end of the storage capacitor according to a gate signal. The second switch is electrically connected between the first end of the storage capacitor and a second end of the storage capacitor, and configured to receive a first operating voltage from the second end of the storage capacitor and provide the first operating voltage to the first end of the storage capacitor.
    Type: Grant
    Filed: January 4, 2019
    Date of Patent: April 6, 2021
    Assignee: AU OPTRONICS CORPORATION
    Inventors: Peng-Bo Xi, Sung-Yu Su, Chen-Feng Fan, Wan-Heng Chang
  • Patent number: 10909896
    Abstract: The present disclosure provides a common voltage generation circuit, a common voltage generation method, and a display device, and belongs to the field of display technology. The common voltage generation circuit includes: an initial common voltage generation component configured to generate an initial common voltage controlled by a ground voltage and a positive power supply voltage according to a clock synchronization signal and a serial digital signal as received; and a common voltage adjustment component configured to generate a common voltage controlled by the ground voltage and a negative power supply voltage according to the initial common voltage.
    Type: Grant
    Filed: December 21, 2018
    Date of Patent: February 2, 2021
    Assignees: HEFEI BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yifei Zhan, Dayu Zhang, Xiaohan Ling
  • Patent number: 10909938
    Abstract: A display device includes a data driver which outputs a data voltage of a positive polarity or a negative polarity to a data line based on the polarity control signal by a horizontal period, and a number of a positive horizontal period, in which the data voltage of the positive polarity is outputted to the data line, in a frame period is different from a number of a negative horizontal period, in which the data voltage of the negative polarity is outputted to the data line, in the frame period when the frame image data satisfy a condition of an afterimage pattern.
    Type: Grant
    Filed: May 1, 2019
    Date of Patent: February 2, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Dong Keon Kim, Wonjong Ohn, Moah Choi
  • Patent number: 10902931
    Abstract: The present disclosure provides a shift register unit and a method for driving the same, a gate driving circuit, and a display apparatus. The shift register unit includes: a first input sub-circuit configured to transmit a signal at a first signal input terminal to a pull-up node under control of the first signal input terminal; a second input sub-circuit configured to transmit the signal at the first signal input terminal to the pull-up node under control of a second signal input terminal; a first output sub-circuit configured to transmit a signal at a first clock signal terminal to a first signal output terminal under control of the pull-up node; and a second output sub-circuit configured to transmit a signal at a second clock signal terminal to a second signal output terminal under control of the pull-up node.
    Type: Grant
    Filed: August 30, 2019
    Date of Patent: January 26, 2021
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Mingfu Han
  • Patent number: 10896650
    Abstract: A short-circuiting circuit short-circuits source bus lines such that a sum of numbers assigned to two source bus lines forming each set in each group is equal for all sets when it is assumed that K consecutive source bus lines (K is an even number greater than or equal to 4) form one group and numbers from 1 to K are assigned to the K source bus lines. For example, with four consecutive source bus lines forming one group, in each group, the short-circuiting circuit short-circuits the first and fourth source bus lines and short-circuits the second and third source bus lines.
    Type: Grant
    Filed: May 25, 2017
    Date of Patent: January 19, 2021
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Kohji Saitoh, Kosuke Kawamoto, Kazuhisa Yoshimoto, Kazuya Kondoh, Masaki Uehata, Yasuki Mori
  • Patent number: 10885823
    Abstract: A display apparatus includes a display panel, a gate driver and a data driver. The display panel is configured to display an image. The gate driver is configured to output gate signals to the display panel. The data driver includes positive amplifiers configured to output positive data voltages to the display panel and negative amplifiers configured to output negative data voltages to the display panel. A driving timing of the positive amplifiers and a driving timing of the negative amplifiers are independently controlled.
    Type: Grant
    Filed: May 2, 2019
    Date of Patent: January 5, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventor: Wontae Kim
  • Patent number: 10810958
    Abstract: Embodiments of the present disclosure provide a display panel and a drive method thereof, and a display device. The display panel includes a plurality of sets of pixel columns and a plurality of drive circuits. Each of the sets of pixel columns includes a plurality of subpixel columns. The plurality of drive circuits correspond to the plurality of sets of pixel columns respectively. Each of the drive circuits is further configured to send, to an adjacent drive circuit, a source data signal for the subpixel column in the set of pixel columns of the drive circuit, and/or receive, from the adjacent drive circuit, a source data signal for the subpixel column in the set of pixel columns of the adjacent drive circuit and generate a data signal for driving the subpixel column in the set of pixel columns of the drive circuit, based on the received source data signal.
    Type: Grant
    Filed: August 31, 2018
    Date of Patent: October 20, 2020
    Assignees: CHENGDU OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Lixia Shen, Zhiguang Zhang, Chang Zhang, Yong Yu, Tae Hyun Kim
  • Patent number: 10803821
    Abstract: The present invention discloses a liquid crystal display panel and a liquid crystal display device, the liquid crystal display panel includes: a plurality of data lines and a plurality of scan lines, wherein the plurality of data lines intersect with the plurality of scan lines to define X rows and Y columns of pixel units arranged in a matrix, S types of different polarity inversion positions are existed from an i-th column of pixel unit to an [i+(U?1)]-th column of pixel unit, where 0<i<Y, U?4, S?2, and U is a polarity inversion repetition period in a scan line direction. The liquid crystal display panel and the liquid crystal display device provided by the present invention can alleviate the phenomenon of horizontal equidistant horizontal stripes, and can reduce the problem of excessive power consumption and temperature increase caused by driving.
    Type: Grant
    Filed: June 28, 2019
    Date of Patent: October 13, 2020
    Assignee: XIANYANG CAIHONG OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Yusheng Huang, Zihan Liu, Yuyeh Chen, Yuan-Liang Wu
  • Patent number: 10777154
    Abstract: The disclosure relates to a driving method and a driving device for a display panel and a display device, wherein the display panel includes a plurality of first pixel units and a plurality of second pixel units which are disposed adjacently. The driving method includes dividing a plurality of pixel units of the display panel into a plurality of pixel unit groups; driving subpixels in first pixel units and subpixels in second pixel units by using drive voltages of different voltage levels; driving the subpixels arranged in the same line in every two adjacent pixel unit groups by using the drive voltages of opposite polarities; and driving every continuously arranged four lines of pixel units in the same one of the pixel unit groups by using the drive voltages of different polarities.
    Type: Grant
    Filed: October 16, 2018
    Date of Patent: September 15, 2020
    Assignee: HKC CORPORATION LIMITED
    Inventor: Bei Zhou Huang
  • Patent number: 10761389
    Abstract: This application provides a pixel arrangement and a display panel. The pixel arrangement includes a plurality of pixel cells arranged in an array, each pixel cell includes four sub-pixels that are respectively red, green, blue, and white. Sub-pixels in a same row are connected to a same scanning line, and sub-pixels in a same column are connected to a same data line. In the pixel arrangement, sub-pixels connected to eight sequential data lines are arranged as a repetition group, and a data signal on an Nth data line is the same as a data signal on an (N+1)th data line. In one repetition group, polarities of data signals of sub-pixels with a same color that are connected to a same scanning line are opposite.
    Type: Grant
    Filed: November 28, 2018
    Date of Patent: September 1, 2020
    Assignees: CHONGQING HKC OPTOELECTRONICS TECHNOLOGY CO., LTD., HKC CORPORATION LIMITED
    Inventor: Zhenli Song
  • Patent number: 10755653
    Abstract: Provided is a vertical alignment liquid crystal display, comprising a plurality of data lines, a plurality of scan lines and a plurality of common electrode lines; the scan lines intersect the data lines and the common electrode lines to form a plurality of pixel regions arranged in an array; the sub pixel region comprises a first thin film transistor, a second thin film transistor and a sub pixel, and gates of the first thin film transistor and second thin film transistor are coupled to a same scan line, and drains of the first thin film transistor and second thin film transistor are respectively coupled to a data line and a common electrode line which are adjacent, and sources of the first thin film transistor and second thin film transistor are coupled to the sub pixel; the main pixel region comprises a third thin film transistor and a sub pixel.
    Type: Grant
    Filed: August 24, 2018
    Date of Patent: August 25, 2020
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
    Inventor: Sikun Hao
  • Patent number: 10748468
    Abstract: A display panel is provided. The display panel includes a plurality of data lines, a plurality of scan lines, and a plurality of pixel units, wherein each of the plurality of pixel units includes a plurality of sub-pixel units; the plurality of sub-pixels in a same pixel unit are connected to a same data line, and are correspondingly connected to different scan lines. The display panel includes a data driving module and a scan driving module. The data driving module includes a pulse width modulating chip, a gamma correcting chip, a timing control chip, and a data signal generating chip. A display device is also provided.
    Type: Grant
    Filed: June 22, 2017
    Date of Patent: August 18, 2020
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventors: Yuntao Li, Yuyeh Chen, Yinhung Chen
  • Patent number: 10748502
    Abstract: A driving method of a display panel and a display device are provided. The method includes: receiving an external display data; changing a luminance signal of the sub-pixel corresponding to each pixel unit of a display panel in the display data, to generate a data signal; sending the data signal; wherein the luminance of one sub-pixel in the two adjacent sub-pixels in the same color after being changed, is greater than the luminance before being changed, and the luminance of the other sub-pixel after being changed, is smaller than the luminance before being changed. The present disclosure can make the orientation of the liquid crystal molecules in the liquid crystal display panel may be more rich, and the chromaticity viewing angle of the liquid crystal display panel may be improved.
    Type: Grant
    Filed: January 22, 2018
    Date of Patent: August 18, 2020
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
    Inventors: Bing-jei Liao, Yu Wu, Xiaoliang Guan, Geng Wang
  • Patent number: 10741112
    Abstract: A protection circuit is disclosed, applied to a display apparatus. The display apparatus includes a voltage level shifter and a plurality of clock signal lines coupled to the voltage level shifter. The protection circuit includes a plurality of switches. At least one of the switches includes a control terminal, an input terminal, and an output terminal. The control terminal is coupled to a first clock signal line in the clock signal lines. The input terminal is coupled to a second clock signal line in the clock signal lines. The control terminal determines, according to a first clock signal provided by the first clock signal line, whether to conduct the input terminal and the output terminal, and the output terminal outputs a second clock signal provided by the second clock signal line.
    Type: Grant
    Filed: March 6, 2018
    Date of Patent: August 11, 2020
    Assignee: AU OPTRONICS CORPORATION
    Inventors: Jian-Yu Wu, Shih-Hsuan Chen
  • Patent number: 10643535
    Abstract: A driving method for preventing image sticking of a display panel (805) upon shutdown, and a display device (800). The method includes: receiving a shutdown signal (S01, S16); and adjusting driving signals of a sub-pixel circuit (708, 810) of the display panel (805), so as to reduce the voltage difference between a gate electrode and a source electrode of a driving transistor (T1) of the sub-pixel circuit, and hence allowing the display panel (805) to enter an image sticking prevention mode (S02, S17). The method can prevent image sticking of the display panel (805) at the time of shutdown and hence improve the display quality.
    Type: Grant
    Filed: August 29, 2019
    Date of Patent: May 5, 2020
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Fei Yang, Song Meng, Hongjun Xie, Quanhu Li, Yue Wu, Yu Wang
  • Patent number: 10559271
    Abstract: A liquid crystal display device that performs phase inversion drive in which a phase of a polarity of a data voltage is inverted in predetermined timing while performing frame inversion drive in which a positive-polarity data voltage and a negative-polarity data voltage are alternately output to a data line in each one or plurality of frames. In a first frame immediately after the phase is inverted, the source driver outputs a second data voltage to the data line in initial first periods of a horizontal scanning period, the second data voltage being closer to the common voltage than a first data voltage corresponding to input image data, and outputs the first data voltage to the data line in a second period after the first period in the horizontal scanning period.
    Type: Grant
    Filed: July 2, 2019
    Date of Patent: February 11, 2020
    Assignee: Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Hideyuki Noguchi, Toshiki Onishi, Yoshihisa Ooishi
  • Patent number: 10475408
    Abstract: Disclosed are a liquid crystal display panel and a gate driving circuit thereof. The liquid crystal display panel includes a plurality of pixel units arranged in a matrix, a plurality of scan lines, a gate driving circuit, a plurality of data lines and a data driving circuit. Every two scan lines are corresponded to the pixel units in the same column and alternatively connected to the pixel units in the same column. Each data line is connected to the pixel units in the two rows. The driving abilities of the gate driving signals provided to the two scan lines corresponding to the pixel units in the same column are different. In this manner, the liquid crystal display panel can have less brightness variation and thus have a better display performance.
    Type: Grant
    Filed: December 20, 2017
    Date of Patent: November 12, 2019
    Assignee: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd
    Inventor: Wenying Li
  • Patent number: 10431171
    Abstract: A method includes applying a common voltage to a display panel, digitally converting a feedback common voltage from the display panel, detecting an effective ripple signal exceeding a reference value based on the digitally converted feedback common voltage, comparing a total number of effective ripple signals detected during a first frame period with a threshold value, determining whether the effective ripple signals of the first frame period are crosstalk inducing signals based on a comparison result, and determining whether to change a polarity pattern of image data signals to be applied to the display panel during a second frame period based on a determination result in terms of the crosstalk inducing signal.
    Type: Grant
    Filed: August 1, 2017
    Date of Patent: October 1, 2019
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Heendol Kim, Jaihyun Koh, Bonghyun You, Jaehoon Lee, Dongwon Park
  • Patent number: 10312264
    Abstract: A display device includes overlapping two display panels. The display panel on the upper side includes a first display region and a region that transmits visible light. The display panel on the lower side includes a second display region and a region that blocks visible light. The second display region overlaps with the region that transmits visible light. The region that blocks visible light overlaps with the first display region. The display panel on the lower side includes a third display region between the second display region and the region that blocks visible light. The gate signal and the source signal supplied to a first pixel in the third display region are the same as the gate signal and the source signal supplied to a second pixel in the second display region. The second pixel is closer to the first pixel than any other pixels included in the second display region.
    Type: Grant
    Filed: September 12, 2017
    Date of Patent: June 4, 2019
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Daiki Nakamura, Kensuke Yoshizumi
  • Patent number: 10290249
    Abstract: A driver and an electronic device include a driving circuit having a plurality of data line driving circuits that drive a plurality of data lines in an electro-optical panel, a measurement circuit that measures a voltage in the data lines, and a computation circuit that computes a correction coefficient for correcting display data. Based on a measurement result, the computation circuit computes the correction coefficient that changes in accordance with a coupling capacitance between one data line and a data line adjacent thereto.
    Type: Grant
    Filed: January 15, 2016
    Date of Patent: May 14, 2019
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Akira Morita
  • Patent number: 10262607
    Abstract: The present disclosure relates to a driving circuit for liquid crystal panels and a liquid crystal display. The driving circuit of a liquid crystal panel includes a demultiplexer circuit and an inversion switching circuit. Two input ends of the inversion switching circuit input two kinds of data signals having opposite polarity. The output ends of the inversion switching circuit respectively connect to the input end of the demultiplexer circuit. The output end of the demultiplexer circuit respectively connects to the data lines in the odd rows and the even rows. By adding the inversion switching circuit in the input side of the data signals of the demultiplexer circuit, the two input ends of the inversion switching circuit are alternatively connected with the two output ends of the inversion switching circuit while scanning a row of sub-pixels.
    Type: Grant
    Filed: May 12, 2017
    Date of Patent: April 16, 2019
    Assignee: Wuhan China Star Optoelectronics Technology Co., Ltd
    Inventor: Liang Ma
  • Patent number: 10192500
    Abstract: Polarity reversion driving method and apparatus of liquid crystal display and a liquid crystal display are provided. In the method, four frames constitute one polarity reversion driving period, in which a first frame and a third frame have a same polarity arrangement with reversed polarities; a second frame and a fourth frame have a same polarity arrangement with reversed polarities; the first frame and the second frame have different polarity arrangements and corresponding pixels in adjacent two frames have complementary charging effects. The apparatus includes a time schedule controller, a logic controller and a source driver. Charging effects of pixels in frames are controlled by setting a polarity arrangement of pixels in each frame so that charging effects of corresponding pixels are complementary in adjacent two frames, thereby relieving the problem of reduced display quality due to inconsistent charging effects of pixels on two sides of data lines.
    Type: Grant
    Filed: January 31, 2017
    Date of Patent: January 29, 2019
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., HEFEI BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Jinliang Liu, Guangyan Tian
  • Patent number: 10176771
    Abstract: A display panel includes a pixel array, a gate driving circuit, and a data driving circuit. The pixel array includes a plurality of pixel blocks, a plurality of gate lines and a plurality of data lines. The gate driving circuit is electrically coupled to the gate lines for driving sub-pixels of the pixel array. The data driving circuit is electrically coupled to the data lines for providing data signals to the sub-pixels of the pixel array. The sub-pixels of each pixel block include a plurality of first sub-pixels and a plurality of second sub-pixels. For each pixel block, the first sub-pixels and the second sub-pixels have same quantity. For displaying a specified gray-scale value, a luminance value in each first sub-pixel is greater than a luminance value in each second sub-pixel. The data driving circuit changes a polarity of each sub-pixel of the pixel array by using a polarization sequence.
    Type: Grant
    Filed: April 18, 2017
    Date of Patent: January 8, 2019
    Assignee: AU OPTRONICS CORPORATION
    Inventors: Kun-Cheng Tien, Shu-En Li, Chien-Huang Liao, Jia-Long Wu
  • Patent number: 10134350
    Abstract: The embodiments of the present disclosure provide a shift register unit, a method for driving the shift register unit, a gate driving circuit and a display apparatus. The shift register unit comprises a first input module, a first output module, a first reset module, a first storage module and a second reset module. The first input module is configured to output a first pull-up signal to the first output module based on a first input signal. The first output module is configured to output an output signal based on the first pull-up signal and a first clock signal. The first storage module is configured to store the first pull-up signal. The first reset module is configured to reset the first storage module based on a first reset signal. The second reset module is configured to reset the output from the first output module based on a second reset signal.
    Type: Grant
    Filed: July 18, 2017
    Date of Patent: November 20, 2018
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE DISPLAY TECHNOLOGY CO., LTD.
    Inventor: Qiujie Su
  • Patent number: 10114245
    Abstract: An array substrate and a manufacturing method. The array substrate includes a substrate, multiple gate and data lines, and multiple common electrode lines parallel with the gate lines. The substrate includes a first surface. Among two adjacent gate lines and data lines, one pixel region is defined. The array substrate further includes a thin-film transistor, a common electrode, a pixel electrode and a storage capacitor disposed in the pixel region. The transistor includes a gate electrode, the first insulation layer, a channel layer, a source and drain electrode. The storage capacitor includes a first and a second conductive portion. The gate electrode, the common electrode line, the common electrode and the first conductive portion are disposed on the first surface. The channel layer, the source and drain electrode, the second conductive portion and the pixel electrode are disposed on the first insulation layer. The pixel electrode is a metal layer.
    Type: Grant
    Filed: May 13, 2016
    Date of Patent: October 30, 2018
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd
    Inventor: Xiangyang Xu
  • Patent number: 10078985
    Abstract: A liquid crystal display includes: a liquid-crystal-display device; a display control circuit; a backlight device; and a light-emitting-diode control circuit that adjusts luminance of the backlight device using a pulse width modulation signal as an output to the white light emitting diode. Gradation correction data corresponding to a chromaticity variation due to a duty ratio of the pulse width modulation signal is stored in the display control circuit in advance, the display control circuit determines the gradation correction data corresponding to input image data input to the liquid crystal display, based on the input image data and the duty ratio, and the display control circuit outputs output image data, which is calculated so as to correct the chromaticity variation based on the gradation correction data and the input image data, as the image signal to the liquid-crystal-display device.
    Type: Grant
    Filed: June 2, 2016
    Date of Patent: September 18, 2018
    Assignee: Mitsubishi Electric Corporation
    Inventor: Akihiro Mori
  • Patent number: 10056049
    Abstract: A display apparatus includes a timing controller and a display panel. The timing controller generates output image data based on input image data and generates a polarity control signal by analyzing the input image data. The display panel displays a plurality of frame images based on the output image data during a plurality of frames and operates based on an inversion driving scheme in which a polarity pattern of the plurality of frame images is changed based on the polarity control signal per N frames, where N is a natural number. The number N is variable based on the polarity control signal.
    Type: Grant
    Filed: April 15, 2016
    Date of Patent: August 21, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Sangsu Han, Kyoung Won Lee
  • Patent number: 10007379
    Abstract: A display device with built-in touch detection function, the display device includes source lines, detection lines, common lines, gate lines, pixels, control elements, each applying to a corresponding pixel a voltage, a common line driving circuit including a pulse generator that sequentially drives the common lines, the pulse generator generating a first pulse signal for each of the common lines, a pulse compensator, the pulse compensator generating a second pulse signal based on the first pulse signal and the potential input from each of the common lines, the second pulse signal reducing a variation in potential at each of the common lines in response to a potential at each of the source lines, the pulse compensator outputting the second pulse signal to a corresponding common line, and a touch detector that detects a position specified by a user according to the second pulse signal.
    Type: Grant
    Filed: August 22, 2016
    Date of Patent: June 26, 2018
    Assignee: Panasonic Liquid Crystal Display Co., Ltd.
    Inventors: Ryutaro Oke, Junichi Maruyama
  • Patent number: 9996246
    Abstract: Provided are a device and method for displaying association information associated with a first application and a second application. The method may include: presenting a list of applications executable by the device; receiving a user input of moving an icon of the first application, in the presented list of the applications, to an icon of the second application; obtaining the association information associated with the first application and the second application by using at least one piece of preset data corresponding to the icon of the first application, in response to the received user input; and presenting the obtained association information in a periphery of the icon of the second application.
    Type: Grant
    Filed: April 2, 2015
    Date of Patent: June 12, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Young-kyu Jin, Yoon-su Kim, Joo-yoon Bae, Jung-joo Sohn, Yong-gook Park, Yang-wook Kim, Yong-hyun Lim, Jae-ho Jung
  • Patent number: 9997112
    Abstract: Present invention is related to a display device and a driving method thereof. In particularly, the present invention is to provide a display device and a driving method thereof, in which a data driver driven at a low frequency which is capable of inverting a polarity of a data voltage in each frame.
    Type: Grant
    Filed: March 10, 2015
    Date of Patent: June 12, 2018
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Hun Jeoung, Sang Hee Yu, Sung Hyun Cho, Bo Sun Lee, Sung Wook Chang