Field Period Polarity Reversal Patents (Class 345/209)
  • 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: 9997095
    Abstract: A display apparatus includes a display driving circuit and a controller. The display driving circuit includes a data driver to sequentially drive a plurality of pixel groups during one horizontal period in a time-division manner. The pixel groups are included in each of the horizontal lines of a display panel. The controller analyzes a pattern of received image data and determines a driving sequence of the plurality of pixel groups of each horizontal line based on a result of the analysis of the pattern of received image data.
    Type: Grant
    Filed: July 22, 2016
    Date of Patent: June 12, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Jee-hwal Kim
  • 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
  • Patent number: 9978298
    Abstract: A display panel including a plurality of digital code display units is provided. The digital code display units respectively display digital codes. Each of the digital code display units includes a plurality of display segments. The display segments are at least grouped into a first group and a second group. A signal waveform of at least one of a plurality of common voltage signals that drive the first group is the same as a signal waveform of at least one of a plurality of common voltage signals that drive the second group. Furthermore, a driving method of the display panel is also provided.
    Type: Grant
    Filed: July 30, 2015
    Date of Patent: May 22, 2018
    Assignee: E Ink Holdings Inc.
    Inventors: Wei-Hsuan Tsai, Shao-Wei Su, Chih-Jen Wu, Chi-Mao Hung
  • Patent number: 9966026
    Abstract: A GOA substrate includes GOA circuit units connected in cascade. The GOA circuit unit includes an output module, a reset module, a latch module, and an input module. The output module is used for outputting the scan signal based on a trigger signal. The reset module is used for resetting the trigger signal based on the reset signal. The latch module is used to hold and pull down the electric potential of the trigger signal. The input module is used for receiving the scan signal outputted by the previous stage GOA circuit unit. The input module includes a first CMOS transmission gate and a first transistor. The input module can lower the equivalent on-resistance of the transistor, elevate the drive current between the input terminal and the output terminal, so to increase level transmission speed, lower drive power loss of the transistor and improve the stability of the circuit.
    Type: Grant
    Filed: December 23, 2015
    Date of Patent: May 8, 2018
    Assignee: Wuhan China Star Optoelectronics Technology Co., Ltd.
    Inventor: Mang Zhao
  • Patent number: 9940887
    Abstract: A liquid crystal display device is provided. The liquid crystal including an array of pixels each having a memory function; and a buffer to output a first voltage, wherein a second voltage is supplied to a counter electrode of a liquid crystal capacitor, and wherein each of the pixels supplies one of the first voltage and the second voltage to a pixel electrode of the liquid crystal capacitor according to a data value stored in the each of the pixels.
    Type: Grant
    Filed: June 1, 2016
    Date of Patent: April 10, 2018
    Assignee: Japan Display Inc.
    Inventor: Yasuyuki Teranishi
  • Patent number: 9933649
    Abstract: A display panel including a first substrate, a plurality of pixel units disposed on the first substrate and a shielding layer is provided. Each pixel unit includes a thin-film transistor, a first signal line and a second signal line electrically connected to the thin-film transistor. The shielding layer includes a first portion located on a peripheral region and a second portion located on a non-rectangular display region. An inner contour of an orthogonal projection of the first portion of the shielding layer on the first substrate includes a plurality of first line segments and a plurality of second line segments. The first line segments are parallel to orthogonal projections of the first signal lines on the first substrate. The second line segments are respectively parallel to orthogonal projections of the second signal lines on the first substrate.
    Type: Grant
    Filed: November 22, 2016
    Date of Patent: April 3, 2018
    Assignees: HannStar Display(Nanjing) Corp., HannStar Display Corporation
    Inventors: Hsuan-Chen Liu, Chien-Ting Chan
  • Patent number: 9928796
    Abstract: A scanning signal is precisely output to a scanning signal line corresponding to a row range even in a case where a plurality of scanning signals (including a precharge signal) are output at the same time. A display control circuit of the display device sets row selection enable signals at H level so that main charging periods are set in a range from an ith row to an mth row, which corresponds to a moving image region, and precharging periods corresponding to the main charging periods are also set. Accordingly, a precise scanning signal in which a precharging period having a necessary length is set and no unnecessary precharging period is set at all is output to each of scanning signal lines connected to a scanning signal line driving circuit, so that deterioration of display quality is prevented.
    Type: Grant
    Filed: June 23, 2015
    Date of Patent: March 27, 2018
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Aya Nakatani, Kohhei Tanaka, Shigeto Yoshida
  • Patent number: 9912937
    Abstract: The present disclosure provides a driving signal generating circuit, a driving signal generating method and a 3D display device. The driving signal generating circuit includes a voltage conversion unit, an output unit and a control unit. The voltage conversion unit is configured to convert an external input voltage into a plurality of polarization voltages for driving a polarization control panel in an active polarization 3D display device, and transmit the plurality of polarization voltages to the output unit. The control unit is configured to generate a control signal. The output unit is configured to output one of the polarization voltages or a zero voltage to the polarization control panel in a time-division manner according to the control signal.
    Type: Grant
    Filed: September 29, 2014
    Date of Patent: March 6, 2018
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE DISPLAY TECHNOLOGY CO., LTD.
    Inventors: Luqiang Guo, Weihao Hu, Daekeun Yoon, Zongze He, Lei Liu, Zhiming Meng, Jianming Wang
  • Patent number: 9905184
    Abstract: Provided are a display panel and a display apparatus. The display panel includes a plurality of first and second signal lines intersecting with and insulated from each other, pixel units are defined at positions where the first and second signal lines intersect with each other, the first signal lines are open-ring signal lines, the plurality of first signal lines are arranged one by one from inside to outside and spaced apart from each other, and each of the first signal lines surrounds a preceding one of the first signal lines. The display panel further includes a driving unit provided in a region defined by any one of the first signal lines. The driving unit is connected to the second signal lines, and is connected to the first signal lines via the signal introducing lines, so as to provide driving signals to the first and second signal lines.
    Type: Grant
    Filed: March 18, 2016
    Date of Patent: February 27, 2018
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Wenbo Li
  • Patent number: 9870748
    Abstract: A method of driving a display panel is provided. The display panel includes first through n-th gate lines and a plurality of pixels each connected to one of the first through n-th gate lines (where n is a natural number). The method includes charging pixels connected to the n-th gate line with first data voltages corresponding to a first frame image during a first period, charging pixels connected to the first gate line with the first data voltages during the first period, charging the pixels connected to the first gate line with second data voltages corresponding to a second frame image during a second period subsequent to the first period, and charging pixels connected to the second gate line with the second data voltages during the second period.
    Type: Grant
    Filed: June 16, 2015
    Date of Patent: January 16, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hak-Mo Choi, Hoi-Sik Moon, Gwang-Ho Nam, Chang-Soo Lee, Min-Yup Chae
  • Patent number: 9837047
    Abstract: A flat panel display includes a four-color conversion unit, a backlight control unit, a backlight module, and a pixel array. The four-color conversion unit provides a first set of four color image signals corresponding to three color image input signals based on a preliminary conversion lookup table and provides corresponding conversion scaling factors. The backlight control unit generates a backlight adjusting factor based on the conversion scaling factors. The backlight module provides a backlight output having an intensity adjusted according to the backlight adjusting factor. The four-color conversion unit further provides a second set of four color image signals corresponding to the three color image input signals based on the backlight adjusting factor. The pixel array displays an image according to the second set of four color image signals and the backlight output.
    Type: Grant
    Filed: September 23, 2010
    Date of Patent: December 5, 2017
    Assignee: AU OPTRONICS CORP.
    Inventors: Hui Chu Ke, Sheng-Wen Cheng
  • Patent number: 9799284
    Abstract: A driving device includes a first driving circuit, coupled to a first voltage source and a second voltage source having a voltage level lower than the first voltage source, for driving a positive output voltage to a first output end according to a first display voltage and charging the first output end with the second voltage source according to a control signal indicating whether the driving device performs a polarity inversion; and a second driving circuit, coupled to the second voltage source and a third voltage source having a voltage level lower than the second voltage source, for driving a negative output voltage to a second output end according to a second display voltage and discharging the second output end with the second voltage source according to the control signal.
    Type: Grant
    Filed: August 14, 2017
    Date of Patent: October 24, 2017
    Assignee: NOVATEK Microelectronics Corp.
    Inventors: Chieh-An Lin, Pang-Chen Hung
  • Patent number: 9767750
    Abstract: The present disclosure discloses a GOA unit for co-driving a gate electrode and a common electrode, including: a trigger; a first selective input circuit; a second selective input circuit which is used to respectively gate the high level input for common electrode and the high level input for gate electrode to the clock end of the trigger in different time sequences to pull up the voltage on the trigger output end; a third selective input circuit which is used to select level signals or edge signals on gate line n+1 and gate line n+4 to serve as the reset signal of the trigger; a fourth selective input circuit which is used to pull down the voltage thereon; a selective output circuit with the input being connected to the trigger output end, for selectively outputting a gate electrode driving signal or a common electrode driving signal.
    Type: Grant
    Filed: February 20, 2014
    Date of Patent: September 19, 2017
    Assignee: Shenzhen China Star Optoelectronics Technology, Co., Ltd.
    Inventor: Xiangyang Xu
  • Patent number: 9734784
    Abstract: The present invention provides a voltage output device, which comprises a direct-current power supply, a reference level input terminal, a predetermined level output terminal, a voltage regulation module and a control signal generation module, the control signal generation module comprises a control signal generation unit, the voltage regulation module comprises a plurality of storage capacitors, wherein the control signal generation unit can send a charging control signal to the voltage regulation module in a charging stage of the voltage output device, and send an operation control signal to the voltage regulation module in an operating stage of the voltage output device. The present invention further provides a gate driving circuit and a display apparatus. With the voltage output device provided by the present invention, a high-level voltage that is high enough and/or a low-level voltage that is low enough can be outputted, thereby satisfying specific application requirements.
    Type: Grant
    Filed: April 22, 2016
    Date of Patent: August 15, 2017
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE DISPLAY TECHNOLOGY CO., LTD.
    Inventors: Baoyu Liu, Zhihua Sun, Seungmin Lee, Honglin Zhang, Weichao Ma, Jianming Wang, Shulin Yao, Xu Zhang
  • Patent number: 9721515
    Abstract: A liquid crystal display panel and a grayscale voltage compensating method thereof are provided. The compensating method includes: obtaining an actual voltage distribution of a common voltage on a common electrode; and compensating positive polarity grayscale voltages as well as negative polarity grayscale voltages of respective pixel electrodes according to the actual voltage distribution to make that: for a same grayscale value, a difference value between the compensated positive polarity grayscale voltage of each pixel electrode and the common voltage on an opposing position of the pixel electrode on the common electrode is equal to a difference value between the compensated negative polarity grayscale voltage of the pixel electrode and the common voltage on the opposing position. By the above method, the invention can eliminate the flicker phenomenon when the liquid crystal display panel is displaying and therefore the display effect is improved.
    Type: Grant
    Filed: November 28, 2014
    Date of Patent: August 1, 2017
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd
    Inventor: Shen-sian Syu
  • Patent number: 9715852
    Abstract: An organic light emitting display device includes a display panel and a stage block. The display panel includes 4m (m is a natural number) number of horizontal lines in which organic light emitting diodes (OLEDs) are arranged. The stage block provides a scan signal and an emission control signal to each of the horizontal lines. An i (i is a natural number equal to or smaller than m) stage block includes a block signal generating unit, an emission control signal generating unit, and a plurality of scan signal generating units.
    Type: Grant
    Filed: November 12, 2015
    Date of Patent: July 25, 2017
    Assignee: LG DISPLAY CO., LTD.
    Inventor: Kiyoung Sung
  • Patent number: 9691340
    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: June 18, 2013
    Date of Patent: June 27, 2017
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., HEFEI BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Jinliang Liu, Guangyan Tian
  • Patent number: 9563300
    Abstract: The present invention discloses a liquid crystal display touch screen array substrate, which comprises multiple pixel units defined by a gate line and a data line, each pixel unit is provided with a thin film transistor and a pixel electrode inside; a common electrode line provided in parallel at the side of each said gate line; which further comprise: a touch circuit unit used for touch positioning, the touch circuit unit comprising a touch emission line and a touch sensing line intersecting each other, and a light sensing unit provided at the intersection and respectively connected to the touch emission line and the touch sensing line. The touch emission line is the common electrode line, and the touch sensing line is parallel with the data line. The embodiment of the present invention correspondingly discloses a liquid crystal display touch screen.
    Type: Grant
    Filed: January 9, 2014
    Date of Patent: February 7, 2017
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd
    Inventor: Xiangyang Xu
  • Patent number: 9552787
    Abstract: The present disclosure provides a display driving circuit, a driving method thereof, and a display apparatus, to solve the issue regarding power consumption of the display driver due to multiple reversal of the data voltage. The driving method comprises: firstly, determining pre-input data signals that are respectively input by a data line to each pixel unit of a column of pixel units corresponding to the data line when inputting a Nth image frame; next, determining, according to magnitudes or polarities of the pre-input data signals, a scanning order for the gate lines; then, scanning the gate lines according to the scanning order; and then, inputting the pre-input data signals to corresponding pixel units by the data lines.
    Type: Grant
    Filed: June 18, 2015
    Date of Patent: January 24, 2017
    Assignees: BOE Technology Group Co., Ltd., Beijing BOE Display Technology Co., Ltd.
    Inventor: Jieqiong Wang
  • Patent number: 9549439
    Abstract: A method of driving backlight of a display apparatus and the display apparatus are provided. The method includes: generating a control pulse configured to drive a backlight unit, the control pulse including: a first high pulse section configured to turn on the backlight unit; and an afterimage removal section configured to remove a frame afterimage; and inputting the control pulse into the backlight unit to alternately turn on and off the backlight unit, wherein the afterimage removal section comprises at least one second high pulse section having smaller duty than duty of the first high pulse section.
    Type: Grant
    Filed: July 9, 2014
    Date of Patent: January 17, 2017
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Kyu-heon Lee, Sung-hwan Jang
  • Patent number: 9524915
    Abstract: A mask includes a substrate, an effective pixel formation region and a reference pattern formation region. A pixel pattern for forming a pixel component that constitutes a pixel is arranged in the effective pixel formation region. A reference pattern for indicating a reference position where pixel pattern should be arranged in the effective pixel formation region is arranged in the reference pattern formation region. Pixel pattern is arranged to be displaced from the reference position toward a center side of the effective pixel formation region.
    Type: Grant
    Filed: May 4, 2015
    Date of Patent: December 20, 2016
    Assignee: Renesas Electronics Corporation
    Inventor: Hiroyuki Momono
  • Patent number: 9519531
    Abstract: In one example embodiment, a memory device includes a cell array configured to receive data at an associated address in response to a write command. The memory device further includes a storage unit configured to receive the associated address and the data in response to the write command and output the data to the associated address of the cell array in response to a rewrite command. The memory device further includes a violation determining unit configured to determine violation data, count a number of the violation data and determine data written to the storage unit as the violation data if a storage duration of the written data is less than a write recovery time (tWR).
    Type: Grant
    Filed: October 16, 2013
    Date of Patent: December 13, 2016
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Seong-Young Seo, Chul-Woo Park