Field Period Polarity Reversal Patents (Class 345/96)
  • Patent number: 11151958
    Abstract: A driving method and a driving apparatus of a display panel and a display apparatus are provided. The display panel includes adjacently disposed several first pixel units and several second pixel units. The driving method includes: dividing multiple pixel units of the display panel into multiple pixel unit groups each including adjacent two rows of pixel units; using driving voltages of different voltage levels to drive each sub-pixel of a first pixel unit and each sub-pixel of a second pixel unit; using driving voltages of opposite polarities to drive sub-pixels arranged in a same column in each adjacent two of the pixel unit groups; and using driving voltages with a same polarity distribution to drive adjacent two columns of pixel units of each successively arranged three columns of pixel units in a same pixel unit group.
    Type: Grant
    Filed: August 1, 2018
    Date of Patent: October 19, 2021
    Assignee: HKC CORPORATION LIMITED
    Inventor: Bei Zhou Huang
  • Patent number: 11030931
    Abstract: Provided are a shift register unit, a driving method, a gate drive circuit and a display device in the field of display technology. The shift register unit includes an input circuit, an output circuit, and a first pull-down circuit. The output circuit is coupled to a first clock signal terminal, a first node, a first DC power supply terminal, and a first output terminal respectively, and configured to output a first power supply signal from the first DC power supply terminal to the first output terminal in response to a potential of the first node and a first clock signal provided by the first clock signal terminal.
    Type: Grant
    Filed: August 21, 2019
    Date of Patent: June 8, 2021
    Assignees: HEFEI BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Ying Wang, Meng Li, Hongmin Li
  • Patent number: 11017709
    Abstract: The invention provides a driving method for a pixel matrix. The pixel matrix includes a plurality of sub-pixels arranged in a matrix, the polarity of data lines is inverted once every two columns, the polarity of the voltage loaded in the direction of the data lines is exchanged once every N sub-pixels, and each data line alternately loads the voltage to the lth column and (I+2)th column of sub-pixels every N sub-pixels. The driving method includes: acquiring original pixel data; generating a first driving voltage and a second driving voltage according to the original pixel data; and loading the first driving voltage or the second driving voltage to the pixel matrix along the data lines within one frame, where I?1, N?2. In addition, the invention further provides a display device.
    Type: Grant
    Filed: March 4, 2019
    Date of Patent: May 25, 2021
    Assignee: XIANYANG CAIHONG OPTOELECTRONICS TECHNOLOGY CO., LTD
    Inventors: Yusheng Huang, Yuyeh Chen
  • Patent number: 11004400
    Abstract: A display device includes a display panel including a plurality of pixels, a gray group data generator configured to receive current line data for pixels in a current row, and to generate current row gray group data based on the current line data, a horizontal crosstalk determiner configured to determine whether horizontal crosstalk occurs in the current row, a horizontal crosstalk compensator configured to compare the current row gray group data with adjacent row gray group data when the horizontal crosstalk is determined to occur in the current row, and to selectively adjust a plurality of gamma reference voltages according to a result of the comparison between the current row gray group data and the adjacent row gray group data, and a data driver configured to generate and provide data voltages corresponding to the current line data based on the selectively adjusted plurality of gamma reference voltages.
    Type: Grant
    Filed: January 17, 2020
    Date of Patent: May 11, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Changnoh Yoon, Soon-Dong Kim, Jin-Wook Yang
  • Patent number: 10950322
    Abstract: A shift register unit circuit is disclosed that includes a first node control circuit, a second node control circuit, and a plurality of output circuits. Each of the plurality of output circuits is connected to a respective output terminal and provides a gate drive signal to the respective output terminal. Also disclosed are a method of driving the shift register unit circuit, a gate drive circuit, and a display apparatus.
    Type: Grant
    Filed: September 4, 2017
    Date of Patent: March 16, 2021
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., ORDOS YUANSHENG OPTOELECTRONICS CO., LTD.
    Inventors: Jun Fan, Jie Zhang, Jiguo Wang, Fuqiang Li
  • Patent number: 10923065
    Abstract: A data signal delay circuit and delay method and a display device are disclosed. The data signal delay circuit includes a feedback signal generation sub-circuit, a compensation signal generation sub-circuit, and a control sub-circuit. The feedback signal generation sub-circuit is configured to generate a feedback signal based on a first level signal from the first level signal terminal and a second level signal from the second level signal terminal under the control of a gate drive signal from a scan signal line currently being scanned. The compensation signal generation sub-circuit is configured to generate a compensation signal based on the feedback signal and a data enable signal from the data enable signal line. The control sub-circuit is configured to delay a data enable signal of the data enable signal line in a next cycle based on the compensation signal.
    Type: Grant
    Filed: August 29, 2019
    Date of Patent: February 16, 2021
    Assignees: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Mingming Wang, Wei Sun, Ming Chen, Xue Dong, Wenchao Han, Rui Liu
  • Patent number: 10915192
    Abstract: A method for driving a display panel, a display panel, and a display device are provided. The display panel includes: a first gate driver circuit, a second gate driver circuit, common electrodes in an array, data lines, and gate lines, where the gate lines include first and second gate lines alternately row by row in the extension direction of the data lines, the first gate driver circuit is connected with the first gate lines, the second gate driver circuit is connected with the second gate lines, and the common electrodes are reused as touch electrodes; and in one frame, a gate scan signal or an alternating-current touch scan signal is input respectively to the first gate lines and the second gate lines in different periods so that a display function can be enabled, but also a touch report rate can be improved.
    Type: Grant
    Filed: May 7, 2019
    Date of Patent: February 9, 2021
    Assignees: Chongqing BOE Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Jingpeng Zhao, Jieqiong Wang, Zhi Zhang, Guangquan Wang, Xiang Wang, Panpan Li, Yanfei Yan, Xiuzhu Tang, Shuai Chen
  • Patent number: 10890811
    Abstract: An LCD device includes first and second electrodes in each of the first and second pixel regions, a first TFT connected to a second gate line and a first data line and configured to supply a first data voltage to the first electrode in the first pixel region, a second TFT connected to the second gate line and a second data line and configured to supply a second data voltage having a level opposite the first data voltage to the second electrode in the first pixel region, a third TFT connected to a fourth gate line and the first data line and configured to supply the first data voltage to the second electrode in the second pixel region, and a fourth TFT connected to the fourth gate line and the second data line and configured to supply the second data voltage to the first electrode in the second pixel region.
    Type: Grant
    Filed: December 26, 2017
    Date of Patent: January 12, 2021
    Assignee: LG Display Co., Ltd.
    Inventors: Sang-Wook Lee, Hyung-Beom Shin
  • Patent number: 10877611
    Abstract: According to an aspect, a display device with a touch detection function includes a plurality of drive electrodes that face a plurality of pixel electrodes in an orthogonal direction to the surface of the substrate, and extend in a direction parallel to the direction in which a plurality of signal lines extend. The display device with a touch detection function also includes a scan driving unit that applies a touch drive signal to a signal line that faces, in an overlapping manner in the orthogonal direction, a drive electrode to which the touch drive signal is applied.
    Type: Grant
    Filed: October 18, 2018
    Date of Patent: December 29, 2020
    Assignee: Japan Display Inc.
    Inventors: Yoshitoshi Kida, Koji Noguchi, Yasuyuki Teranishi, Hiroshi Mizuhashi, Kohei Azumi
  • Patent number: 10878779
    Abstract: The present disclosure discloses a method of establishing overdrive lookup table for display panel, which could determine the overdrive lookup table of the display panel according to an overdrive lookup table of a target adjustment area after determining the overdrive lookup table of the target adjustment area.
    Type: Grant
    Filed: January 21, 2019
    Date of Patent: December 29, 2020
    Assignees: Chongqing HKC Optoelectronics Technology Co., Ltd., HKC Corporation Limited
    Inventors: Feilin Ji, Wei Chen
  • Patent number: 10861368
    Abstract: A driving method for a display panel is through making the first demultiplexing signal, the second demultiplexing signal, the third demultiplexing signal, the fourth demultiplexing signal, the fifth demultiplexing signal and the sixth demultiplexing signal according to the first sequence generate the high-level pulse in the first image frame, and through making the first demultiplexing signal, the second demultiplexing signal, the third demultiplexing signal, the fourth demultiplexing signal, the fifth demultiplexing signal and the sixth demultiplexing signal according to the second sequence different from the first sequence generate the high-level pulse in the second image frame, thereby by adding the effect of the two image frames to eliminate stripes on the images displayed by the display panel to improve the display effect.
    Type: Grant
    Filed: May 7, 2019
    Date of Patent: December 8, 2020
    Assignee: WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Lihua Zheng, Mang Zhao
  • Patent number: 10852887
    Abstract: A system and method for reducing electromagnetic interference of a display device. The display device may have a plurality of gate electrodes and a plurality of common electrodes. Further, the display device includes a processing system that is configured to drive a first gate electrode of a plurality of gate electrodes of the display device with a first gate select signal to select first subpixels for updating during a first period. The processing system further comprises driving a first common electrode proximate the first gate electrode with a reference signal during the first period. Further, the processing system is configured to drive a second common electrode with a first interference reduction signal during the first period to reduce the electromagnetic interference of the display device.
    Type: Grant
    Filed: February 4, 2019
    Date of Patent: December 1, 2020
    Assignee: SYNAPTICS INCORPORATED
    Inventors: Petr Shepelev, Tetsuo Tanemura, Takayuki Noto
  • Patent number: 10796651
    Abstract: Disclosed a driving method and a device of display panel, as well as a display panel, taking a time duration of scanning at least three adjacent columns of pixel unit as a driving period, driving a common electrode of each sub-pixel of the pixel unit with a preset voltage in a current driving period, and if the preset voltage is a positive or negative polarity driving voltage, driving the high voltage sub-pixels of the pixel and the low voltage sub-pixels of the pixel unit with a preset driving mode.
    Type: Grant
    Filed: January 7, 2019
    Date of Patent: October 6, 2020
    Assignees: Chongqing HKC Optoelectronics Technology Co., Ltd., HKC Corporation Limited
    Inventor: Chihtsung Kang
  • Patent number: 10796657
    Abstract: Provided is a conversion circuit, including a switch signal input terminal; first and second input terminals; and first and second output terminals. The switch signal input terminal receives a switch control signal. The first and second input terminals receive first and second input signals, and polarities of first and second input signals are different and alternately switch. Depending on the switch control signal, the first input terminal is in communication with the first output terminal and the second input terminal is in communication with the second output terminal, or the second input terminal is in communication with the first output terminal and the first input terminal is in communication with the second output terminal, so that a first output signal outputted from first output terminal has a consistent polarity at any time and a second output signal outputted from the second output terminal has a consistent polarity at any time.
    Type: Grant
    Filed: November 4, 2019
    Date of Patent: October 6, 2020
    Assignee: WuHan TianMa Micro-electronics CO., LTD
    Inventors: Chuan Liu, Junjie Fu, Zhihua Yu, Tianlong Xiang
  • Patent number: 10777155
    Abstract: A method for controlling polarity of each subpixels of a display panel by using a pattern detection manner is provided. The method includes the following steps: receiving image data of each subpixels of the display panel, in which the image data of the subpixels corresponds to an image pattern displayed on the display panel; performing the pattern detection manner to determine whether the image pattern is a killer pattern which induces occurrence of horizontal stripes on the display panel; employing a 1-column inversion method to drive the display panel when the image pattern is not the killer pattern; and employing a 2-column inversion method to drive the display panel when the image pattern is the killer pattern.
    Type: Grant
    Filed: July 16, 2019
    Date of Patent: September 15, 2020
    Assignee: HIMAX TECHNOLOGIES LIMITED
    Inventors: Ho-Sheng Chuang, Shih-Yu Wen
  • Patent number: 10650759
    Abstract: A display apparatus including a display panel, a gate driving part and a data driving part. The display panel is configured to display an image, and includes a gate line and a data line. The gate driving part is configured to output a gate signal to the gate line. The data driving part is configured to output a data signal to the data line, and to change a transition time when the data signal transits from a low level to a high level, according to at least one of a change of an inversion method for driving the display panel, and a change of a frame frequency of the image.
    Type: Grant
    Filed: June 27, 2017
    Date of Patent: May 12, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Taehyeong An, Jeongbong Lee, Yujin Kim, Gyuhun Han
  • Patent number: 10643558
    Abstract: A driving method of display panel, a display panel and a display device are disclosed. The driving method includes: in a single-frame display time, sequentially applying signals to a plurality of first sub-pixels connected to first data lines in a scanning direction so that: a signal polarity applied to each of a plurality of first white sub-pixels connected to first data lines is opposite to a signal polarity applied to a first sub-pixel which is located at an upstream of the first white sub-pixel along the scanning direction and is adjacent to the first white sub-pixel, and a signal polarity applied to each of a plurality of first colored sub-pixels is identical with a signal polarity applied to a first sub-pixel which is located at an upstream of the first colored sub-pixel along the scanning direction and is adjacent to the first colored sub-pixel.
    Type: Grant
    Filed: February 24, 2017
    Date of Patent: May 5, 2020
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE DISPLAY TECHNOLOGY CO., LTD.
    Inventors: Guohuo Su, Zhihua Sun, Yujie Gao, Shulin Yao, Baoyu Liu, Xu Zhang, Weichao Ma, Zhihao Zhang, Wenkai Mu, Yingmeng Miao, Guangquan He
  • Patent number: 10592022
    Abstract: Embodiments described herein include a method, processing system, and input device having a display device with an integrated sensing device. The method comprises selecting, using first gate driver circuitry, a first subset of a first plurality of gate electrodes of the display device for performing display updating during a first period. The method further comprises selecting, using second gate driver circuitry, a first subset of a second plurality of gate electrodes of the display device for display updating during a second period. The method further comprises operating, during a third period between the first and second periods, at least a first sensor electrode of a plurality of sensor electrodes for capacitive sensing.
    Type: Grant
    Filed: December 29, 2015
    Date of Patent: March 17, 2020
    Assignee: SYNAPTICS INCORPORATED
    Inventor: Petr Shepelev
  • Patent number: 10553185
    Abstract: Provided are a driving circuit and driving method of a display panel and a display device. A drive voltage signal converted from an Nth-row data of current-frame data is inverted into an Nth-row data of previous-frame data relative to next-frame data and the Nth-row data of previous-frame data relative to next-frame data is cached, so that the Nth-row data of previous-frame data can be cached without using a double-data-rate synchronous dynamic random access memory.
    Type: Grant
    Filed: August 31, 2017
    Date of Patent: February 4, 2020
    Assignees: HKC Corporation Limited, Chongqing HKC Optoelectronics Technology Co., Ltd.
    Inventor: Yu-jen Chen
  • Patent number: 10522097
    Abstract: Disclosed are a method and a device for displaying an image on a liquid crystal panel. The method includes: controlling a timing controller to load a pre-set image from a pre-programmed memory after the liquid crystal panel is powered on, wherein the liquid crystal panel comprises the timing controller, the timing controller is connected with the memory; judging whether the pre-set image is valid; and controlling the liquid crystal panel to display the pre-set image until an external source image is received when the pre-set image is valid. The disclosure solves the technical problem in the related art that a liquid crystal panel cannot display any image before an external system provides an external source image.
    Type: Grant
    Filed: July 14, 2017
    Date of Patent: December 31, 2019
    Assignees: Analogix (China) Semiconductor, Inc., Analogix International LLC
    Inventor: Adam Chen
  • Patent number: 10466832
    Abstract: It is provided a touch panel including a substrate where a touch electrode layer and multiple touch lines are disposed on, and the touch panel further includes: a multipath gating circuit including multiple touch switches and at least one touch clock signal line, where each touch switch includes a control terminal, a signal input terminal and a signal output terminal, the signal output terminal of the touch switch is connected to a second terminal of a touch line corresponding to the touch switch, the signal input terminals of at least two of the touch switches are electronically connected to each other and are connected to a touch signal source, the control terminal of each of the touch switches is connected to the touch clock signal line corresponding to the touch switch.
    Type: Grant
    Filed: March 22, 2016
    Date of Patent: November 5, 2019
    Inventor: Yingteng Zhai
  • Patent number: 10438548
    Abstract: The invention provides a driver circuit structure for RGBW display panel, by arranging the driving TFTs on both sides of the data line to control the corresponding sub-pixels and disposing the plurality of scanning lines into two or four groups for interlaced scanning so that any data line only controlling sub-pixels of the same color during the time a group of scan lines being turned on. As such, the present invention can effectively improve the color shift when displaying solid color screen, improve the display quality, reduce the number of switches of data signal in the data line and reduce energy consumption.
    Type: Grant
    Filed: April 19, 2017
    Date of Patent: October 8, 2019
    Assignee: WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Cong Wang
  • Patent number: 10424259
    Abstract: Exemplary embodiments of the present disclosure provide a demultiplexer circuit, a signal line circuit and a corresponding output circuit, and a display. The demultiplexer circuit includes at least one first input terminal configured to receive a first signal, at least one second input terminal configured to receive a second signal, at least one first output terminal configured to output the first signal and the second signal, and at least one second output terminal configured to output the first signal and the second signal. The demultiplexer circuit according to exemplary embodiments of the present disclosure can reduce the signal input lines and the input ports, further facilitate to reduce the layout space of wiring.
    Type: Grant
    Filed: May 6, 2016
    Date of Patent: September 24, 2019
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Chunping Long, Yong Qiao
  • Patent number: 10353236
    Abstract: A color film substrate includes: a plurality of first color filters, a plurality of second color filters, a plurality of first common electrode sheets and a plurality of second common electrode sheets; the plurality of first color filters and the plurality of second color filters are arranged in an array, and the plurality of first common electrode sheets and the plurality of second common electrode sheets are arranged in an array, the first color filter is in one-to-one correspondence with the first common electrode sheet, and the second color filter is in one-to-one correspondence with the second common electrode sheet; and pixels corresponding to the first color filter and the second color filter serve to store pixel voltages having opposite polarities, respectively, and the first common electrode sheet serves to transmit a direct-current common voltage, and the second common electrode sheet serves to transmit a square-wave common voltage.
    Type: Grant
    Filed: July 14, 2017
    Date of Patent: July 16, 2019
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventor: Shuai Chen
  • Patent number: 10325546
    Abstract: An array substrate, a display panel, a driving method thereof and a display device are provided. Each pixel in the array substrate includes four sub-pixels having different color filter colors and arranged in two rows and two columns. With respect to an example in which each row of sub-pixels corresponds to one gate line and each column of sub-pixels correspond to two data lines, during 3D display, two gate lines corresponding to each row of pixels apply gate scanning signals to this row of pixels, and two data lines corresponding to each column of sub-pixels apply gray scale signals to two sub-pixels belonging to each pixel in this column of sub-pixels respectively. Two sub-pixels having color filters of different colors belonging to a single pixel, in each column of sub-pixels, may receive gray scale signals over different data lines.
    Type: Grant
    Filed: September 1, 2015
    Date of Patent: June 18, 2019
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE DISPLAY TECHNOLOGY CO., LTD.
    Inventors: Chunbing Zhang, Yichiang Lai, Liang Zhang
  • Patent number: 10262604
    Abstract: A host control section (30) is a control device for a display device (1). The host control section (30) includes an image determining section (35) for calculating a density of pixels, which have intermediate grayscale levels (i.e., grayscale levels of a first range), among a plurality of pixels in an image; and a driving changing section (36) for changing a refresh rate of the display device (1) in accordance with the density which has been calculated.
    Type: Grant
    Filed: December 3, 2015
    Date of Patent: April 16, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Hidenori Kuwajima, Junki Asai
  • Patent number: 10235949
    Abstract: A timing controller includes a data grouping part that generates a plurality of grayscale groups based on input image data, each grayscale group including n×m grayscales, a grayscale classifying part that generates a plurality of grayscale patterns respectively corresponding to the grayscale groups, a grayscale in the grayscale groups being classified in the grayscale patterns as a first grayscale if the grayscale is higher than a first reference grayscale or as a second grayscale if the grayscale is lower than a second reference grayscale, a pattern comparing part that compares each grayscale pattern with a first pattern including the n×m first and second grayscales, a pattern counter that counts a number of patterns of the grayscale patterns that are substantially the same as the first pattern, and a driving mode changing part that changes a driving mode of a display panel when the number is greater than a reference number.
    Type: Grant
    Filed: April 12, 2016
    Date of Patent: March 19, 2019
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Young-Soo Sohn, Jae Hyoung Park, Ok-Kwon Shin, Jong-Jae Lee
  • Patent number: 10217424
    Abstract: A liquid crystal display includes a liquid crystal panel including a plurality of gate lines extending in a first direction, a plurality of data lines extending in a second direction crossing the first direction, and a plurality of pixels connected to the gate lines and the data lines, a gate driver configured to apply gate signals to the gate lines, a data driver configured to apply data voltages to the data lines, and a timing controller configured to receive a control signal and image data, to apply a gate control signal to the gate driver, and to apply a data control signal to the data driver, wherein the timing controller is further configured to determine whether to change a present polarity arrangement on a basis of a color ratio of the image data.
    Type: Grant
    Filed: May 23, 2016
    Date of Patent: February 26, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jinpil Kim, Seunghwan Moon, Jung-won Kim, Dongwon Park, Jaesung Bae
  • Patent number: 10192501
    Abstract: The present invention provides a liquid crystal display device with excellent display quality in which the color shift is reduced without increasing power consumption.
    Type: Grant
    Filed: April 18, 2016
    Date of Patent: January 29, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventor: Takehisa Sakurai
  • Patent number: 10176772
    Abstract: The present disclosure provides an array substrate, a display device, and a drive method for the display device. The array substrate comprises gate lines and data lines and a plurality of pixel units defined by intersection of the gate lines and the data lines with one another; wherein the plurality of pixel units is divided into a number of pixel regions each of which includes at least one column of the pixel units and is driven by a data line driving unit; wherein, first and second data lines are disposed side by side between two adjacent pixel units that are respectively located at the margins of any two adjacent pixel regions; and, one of the first and the second data lines is connected with the pixel units adjacent thereto and located in odd rows while the other is connected with the pixel units adjacent thereto and located in even rows.
    Type: Grant
    Filed: August 29, 2014
    Date of Patent: January 8, 2019
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE DISPLAY TECHNOLOGY CO., LTD.
    Inventors: Zhihua Sun, Liang Zhang, Yizhen Xu, Baoyu Liu, Shulin Yao
  • Patent number: 10171798
    Abstract: A liquid crystal lenticular lens element that: comprises a first substrate, a second substrate that is parallel thereto, a liquid crystal layer that is provided between the substrates, a first electrode that is formed on the liquid crystal layer side of the first substrate, and a second electrode comprising a plurality of stripe-shaped electrodes that are formed on the liquid crystal layer side of the second substrate; and that is characterized by having a configuration in which a stripe-shaped repeating structure that comprises a repeating unit along the arrangement direction of the second electrode is formed and an asymmetrical refractive index distribution is induced on a plane that bisects each of the repeating units in a direction that is perpendicular to the arrangement direction by applying an electrical signal from the exterior to each of the electrodes.
    Type: Grant
    Filed: February 13, 2015
    Date of Patent: January 1, 2019
    Assignee: NLT TECHNOLOGIES, LTD.
    Inventors: Ayuko Imai, Ken Sumiyoshi, Hidenori Ikeno
  • Patent number: 10170032
    Abstract: A gate drive circuit unit includes an input sub-circuit for pulling a voltage at a first node as the same as a voltage at a first level terminal, a control sub-circuit for pulling a voltage at a second node as the same as a voltage of the first level terminal, or pulling a voltage at a second node as the same as a voltage of a second level terminal, an energy storage sub-circuit for storing a voltage at the first node, a reset sub-circuit for pulling the voltage at the first node as the same as the voltage at the second level terminal and pulling the voltage at the signal output terminal as the same as the voltage at the second level terminal, and an output sub-circuit for outputting a second clock signal of a second clock signal terminal at the signal output terminal.
    Type: Grant
    Filed: September 22, 2017
    Date of Patent: January 1, 2019
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., HEFEI BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Silin Feng
  • Patent number: 10126612
    Abstract: A display device includes a plurality of signal lines that are so juxtaposed as to be extended along one direction, a plurality of common drive electrodes that are so juxtaposed as to be extended along the signal lines, and a plurality of display elements that are each connected to a respective one of the plurality of signal lines and are each connected also to the common drive electrode that makes a pair with the connected signal line. Scan driving of the plurality of display elements is performed in the direction of the signal lines.
    Type: Grant
    Filed: October 22, 2015
    Date of Patent: November 13, 2018
    Assignee: Japan Display Inc.
    Inventors: Takayuki Nakanishi, Takeya Takeuchi
  • Patent number: 10109246
    Abstract: A driving device of a liquid crystal display panel, including: a data driver, wherein the data driver includes a temperature detection module, and the data driver outputs a feedback signal according to the detected temperature; and a timing controller to provide a polarity control signal to the data driver, wherein the timing controller receives the feedback signal, and controls the polarity inversion manner indicated by the polarity control signal according to the received feedback signal. The driving device of the liquid crystal display panel adjusts a period of the polarity control signal provided to the data controller by the timing controller according to the feedback signal transmitted to the timing controller by the data driver, so as to control the polarity inversion manner indicated by the polarity control signal, thereby improving display quality of the liquid crystal display panel prominently, and reducing production cost effectively.
    Type: Grant
    Filed: July 12, 2016
    Date of Patent: October 23, 2018
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventor: Zhi Xiong
  • Patent number: 10074327
    Abstract: A display apparatus includes a mode determiner configured to compare image signals of a previous frame and a current frame and to determine an image mode of the current frame, a sync signal generator configured to generate a panel sync signal with a low frequency corresponding to the image mode using an original sync signal with a normal frequency, the low frequency being a non-divisor frequency of the normal frequency and lower than the normal frequency, a data driver configured to drive a data line of a display panel using a data sync signal based on the panel sync signal with the low frequency, and a gate driver configured to drive a gate line of the display panel using a gate sync signal based on the panel sync signal with the low frequency.
    Type: Grant
    Filed: March 3, 2016
    Date of Patent: September 11, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Ji-Myoung Seo, Dong-Won Park, Jae-Wan Park, Sang-Mi Kim, Yong-Doo Park, Kyoung-Won Lee, Joon-Chul Goh, Bonghyun You
  • Patent number: 10056032
    Abstract: An organic light-emitting display includes: a display panel including first and second pixels, each having an organic light-emitting diode; and a data driver including a first operational amplifier having a non-inverting terminal coupled to a reference voltage terminal and an inverting terminal coupled to the first pixel, and a second operational amplifier having a non-inverting terminal coupled to the reference voltage terminal and an inverting terminal coupled to the second pixel. The first pixel includes a sensing transistor, a first driving transistor, and a first switch transistor. The second pixel includes a second driving transistor and a second switch transistor.
    Type: Grant
    Filed: April 17, 2015
    Date of Patent: August 21, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Oh Jo Kwon, Joo Hyung Lee, Kyung Youl Min
  • Patent number: 10049633
    Abstract: An array substrate includes a plurality of scan lines formed on a substrate in parallel, a plurality of data lines, which are formed on the substrate in a direction perpendicular to the respective scan lines, but disposed in a different layer from the scan lines, a plurality of pixel units respectively disposed in areas formed by the scan lines and the data lines, each pixel unit including at least one pixel electrode and at least two TFT switches. A first TFT switch pre-charges the pixel electrode, and a second TFT switch pre-charges the pixel electrode with gray scale voltage. A scan signal of at least one scan line enables the first TFT switches of the pixel units on in a line, and at the same time enables the second TFT switches of the pixel units on in another line. A method for driving the array substrate is also described.
    Type: Grant
    Filed: August 21, 2014
    Date of Patent: August 14, 2018
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Xiangyang Xu
  • Patent number: 10049606
    Abstract: A gate driver and a method for adjusting output channels thereof are provided. The method includes: setting a target number of the output channels; dividing the output channels into a first channel chain and a second channel chain; enabling a scanning operation of the first channel chain according to a clock signal and counting the clock signal to obtain a counting value; and when the counting value reaching a threshold value, enabling a scanning operation of the second channel chain, wherein the threshold value is determined according to a difference value between the target number and the physical number.
    Type: Grant
    Filed: September 2, 2015
    Date of Patent: August 14, 2018
    Assignee: Novatek Microelectronics Corp.
    Inventors: Ting-Chun Lin, Shu-Wei Chang, Chiu-Hung Cheng, Chih-Kai Yu
  • Patent number: 10032421
    Abstract: According to one embodiment, a liquid display device includes a liquid crystal display panel provided with pixel which includes pixel electrode, and has gradation values that vary, a driver which drives the pixel electrode, and a processor which supplies, if the gradation value of the pixel varies, the driver with a correction image signal based on an addition image signal in which a voltage based on the gradation value and a compensation voltage are added. The compensation voltage is based on pixel capacitances prior to and subsequent to variation of the gradation value and a voltage subsequent to the variation of the gradation value.
    Type: Grant
    Filed: August 18, 2016
    Date of Patent: July 24, 2018
    Assignee: Japan Display Inc.
    Inventors: Hajime Yamaguchi, Yasushi Kawata, Akio Murayama
  • Patent number: 10025410
    Abstract: A display of an electric device includes a plurality of separated transparent electrode blocks, which are configured to provide one or more of supplemental features such as touch recognition. Signal paths between the transparent electrode blocks and the driver for the supplemental feature are implemented with a plurality of conductive lines placed under positioned under one or more planarization layers. The conductive lines implementing the signal paths are routed across the display area, directly toward a non-display area where drive-integrated circuits are located.
    Type: Grant
    Filed: December 28, 2015
    Date of Patent: July 17, 2018
    Assignee: LG Display Co., Ltd.
    Inventors: Jongbin Kim, MoonSeok Jung, KyoungSeok Park, JoonHo Lee
  • Patent number: 9991890
    Abstract: An object of the present invention is to provide a driver circuit including a normally-on thin film transistor, which driver circuit ensures a small malfunction and highly reliable operation. The driver circuit includes a static shift register including an inverter circuit having a first transistor and a second transistor, and a switch including a third transistor. The first to third transistors each include a semiconductor layer of an oxide semiconductor and are depletion-mode transistors. An amplitude voltage of clock signals for driving the third transistor is higher than a power supply voltage for driving the inverter circuit.
    Type: Grant
    Filed: July 28, 2016
    Date of Patent: June 5, 2018
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Jun Koyama, Hiroyuki Miyake
  • Patent number: 9978323
    Abstract: A liquid crystal display panel and a liquid crystal display device, where polarities of signals provided by data lines are inversed when half gate lines are scanned to comply with the driving manners of half column inversion, and gate lines on one side which are sequentially scanned line by line from top to bottom are scanned alternately with gate lines on the other side which are sequentially scanned line by line from bottom to top, thus the effect of the dot inversion is realized, thereby reducing the power consumption.
    Type: Grant
    Filed: September 7, 2015
    Date of Patent: May 22, 2018
    Assignees: SHANGHAI AVIC OPTOELECTRONICS CO., LTD., TIANMA MICRO-ELECTRONICS CO., LTD.
    Inventors: Huijun Jin, Yao Lin
  • Patent number: 9959809
    Abstract: An EL display apparatus according to the present invention includes an EL device adapted to emit light at a luminance corresponding to a current fed thereto. A source driver outputs a current higher than a current corresponding to an analog video signal to the EL device through a source signal line. This operation charges/discharges a parasitic capacitance present in the source signal line. A second gate driver circuit controls a transistor formed between the EL device and the source driver to operate so that the EL device is fed with the current for only a part of a one-frame period. As a result, the El device emits light for only the part of the period.
    Type: Grant
    Filed: April 20, 2017
    Date of Patent: May 1, 2018
    Assignee: JOLED INC.
    Inventors: Hiroshi Takahara, Hitoshi Tsuge
  • Patent number: 9939690
    Abstract: Disclosed are an array substrate and a display device. The array substrate comprises a plurality of sub-pixel units arranged in an array. Each of the sub-pixel units comprises a first transparent electrode and a second transparent electrode cooperating with each other, and a first switching element and a second switching element cooperating with each other. The signals provided by the first switching element and the second switching element are different, and are interchanged with each other each time after a given time period.
    Type: Grant
    Filed: January 16, 2015
    Date of Patent: April 10, 2018
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventor: Yuejun Tang
  • Patent number: 9910329
    Abstract: A liquid crystal display (LCD) device according to an embodiment includes a liquid crystal panel in which a gate line, a dummy data line, and a data line are disposed, a timing controller configured to generate compensation data, a data driver configured to generate a compensation data voltage on the basis of the compensation data, provide the generated compensation data voltage to the dummy data line, and provide a data voltage for displaying an image to the data line, a common electrode configured to provide a common voltage to pixels of the liquid crystal panel, and a compensation capacitor positioned outside of a pixel array of the liquid crystal panel and charged upon receiving the compensation data voltage.
    Type: Grant
    Filed: August 28, 2015
    Date of Patent: March 6, 2018
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Kyujin Kim, Ooksang Yoo, Taehun Kim
  • Patent number: 9905176
    Abstract: A display device includes: a display panel including a plurality of pixels and a plurality of dots having a pixel set including n pixels of the plurality of pixels as a unit; a signal controller configured to receive input image signals for the pixels and process the input image signals to generate output image signals; and a data driver configured to convert the output image signals into data voltages and apply the data voltages to the display panel, wherein the data driver is configured to apply data voltages having different polarities to a first dot and a second dot of the plurality of dots, the second dot being positioned in a row that is the same as a row in which the first dot is positioned to neighbor the first dot.
    Type: Grant
    Filed: September 3, 2015
    Date of Patent: February 27, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventor: Duk-Sung Kim
  • Patent number: 9886929
    Abstract: A timing control chip includes a pulse signal generation module for generating first and second pulse signals, a data signal sending module having a data signal including valid and invalid data segments, and a synthesis module for synthesizing the first and second pulse signals into the invalid data segment to form a synthesized data signal and then transfer it to the data signal sending module. The data signal sending module is to connect a data driver chip to make the data driver chip decompose the synthesized data signal into the first and the second pulse signal, grab a state of the second pulse signal when the first pulse signal is at a first edge and control a polarity of an outputted driving voltage according to the grabbed state of the second pulse signal. The invention further provides a data driver chip and a driving circuit.
    Type: Grant
    Filed: August 21, 2015
    Date of Patent: February 6, 2018
    Assignee: Shenzhen China Star Optoelectroics Technology Co., Ltd.
    Inventor: Zhi Xiong
  • Patent number: 9886918
    Abstract: A method for driving a liquid crystal display panel is disclosed. The liquid crystal display panel comprises a plurality of sub pixels, and the method comprises presenting images to be displayed on the liquid crystal display panel frame by frame through regulating a gray-scale of each sub pixel of the liquid crystal display panel, wherein durations of image frames are not all equal to one another so as to reduce a direct current bias voltage of the sub pixel. According to the method, the direct current bias voltage during the isochronous driving process can be effectively reduced, and thus the afterimage of the liquid crystal display panel can be alleviated.
    Type: Grant
    Filed: June 25, 2015
    Date of Patent: February 6, 2018
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventor: Yuejun Tang
  • Patent number: 9847053
    Abstract: A display apparatus, a gate driver and an operation method thereof are provided. The gate driver includes a first input buffer and a gate line driving circuit. An input terminal of the first input buffer is configured to receive a timing control signal from the outside of the gate driver. The gate line driving circuit is coupled to an output terminal of the first input buffer. The gate line driving circuit is configured to scan a plurality of gate lines of the display panel based on the control of the timing control signal. An output impedance of the first input buffer is correspondingly adjusted according to the coupling noise of the gate driver.
    Type: Grant
    Filed: February 5, 2016
    Date of Patent: December 19, 2017
    Assignee: Novatek Microelectronics Corp.
    Inventors: Jen-Chieh Hu, Jung-Chieh Cheng
  • Patent number: 9842557
    Abstract: A gate driving circuit provides a plurality of gate lines of a display panel with gate signals, the gate driving circuit including: a plurality of driving stages which correspond to the plurality of gate lines, respectively, and each of which outputs a carry signal and a gate signal for driving a corresponding gate line in response to a clock signal, an input signal, and a carry signal of a next stage; and a dummy driving stage which outputs a dummy carry signal in response to the clock signal, a carry signal of the last stage of the plurality of driving stages, and a carry signal output from any one of the plurality of driving stages.
    Type: Grant
    Filed: December 7, 2015
    Date of Patent: December 12, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jonghee Kim, Youngwan Seo, Jaekeun Lim