Specific Display Element Control Means (e.g., Latches, Memories, Logic) Patents (Class 345/98)
  • Patent number: 11455969
    Abstract: A transistor whose channel region includes an oxide semiconductor is used as a pull down transistor. The band gap of the oxide semiconductor is 2.0 eV or more, preferably 2.5 eV or more, more preferably 3.0 eV or more. Thus, hot carrier degradation in the transistor can be suppressed. Accordingly, the circuit size of the semiconductor device including the pull down transistor can be made small. Further, a gate of a pull up transistor is made to be in a floating state by switching of on/off of the transistor whose channel region includes an oxide semiconductor. Note that when the oxide semiconductor is highly purified, the off-state current of the transistor can be 1 aA/?m (1×10?18 A/?m) or less. Therefore, the drive capability of the semiconductor device can be improved.
    Type: Grant
    Filed: August 30, 2021
    Date of Patent: September 27, 2022
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Atsushi Umezaki, Hajime Kimura
  • Patent number: 11450292
    Abstract: This application discloses a charge sharing circuit and charge sharing method for a display panel and a display panel. The charge sharing circuit includes a controller (250) and n sets of sharing sub-circuits (240), where each set of sharing sub-circuits (240) operates in response to a corresponding one of different polarity driving modes of pixel electrodes of the display panel, each set of sharing sub-circuits (240) includes a plurality of control elements (241), in a set of sharing sub-circuits (240), each of the data lines is connected to only one control element (241), within the same period of time, the controller drives only one set of sharing sub-circuits to operate, and n?1.
    Type: Grant
    Filed: June 10, 2020
    Date of Patent: September 20, 2022
    Assignees: HKC CORPORATION LIMITED, CHONGQING HKC OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Xiaoyu Huang
  • Patent number: 11450137
    Abstract: A display device adapted to perform in-screen fingerprint identification is provided. The display device includes a plurality of sub-pixel circuits, a plurality of light sensing circuit stages, and a plurality of sensing drive lines. The light sensing circuit stages correspond to the sub-pixel circuits. The sensing drive lines drive the light sensing circuit stages sequentially. In a first time interval, a first sensing drive line among the sensing drive lines provides a first sensing drive signal to a qth light sensing circuit stage and a latter light sensing circuit stage among the light sensing circuit stages. In the first time interval, the qth light sensing circuit stage performs a light sensing reset operation according to the first sensing drive signal, and the latter light sensing circuit stage performs a light sensing write operation according to the first sensing drive signal.
    Type: Grant
    Filed: January 27, 2021
    Date of Patent: September 20, 2022
    Assignee: Au Optronics Corporation
    Inventors: Ming-Yao Chen, Cheng-Hsing Lin, Shu-Wen Tzeng, Hsin-Lin Hu, Jui-Chi Lo
  • Patent number: 11450253
    Abstract: The present invention provides a display panel and an electronic device. A gate driver on array (GOA) circuit in the display panel includes a plurality of cascaded GOA units. The GOA units include a plurality of effective GOA units and 2m redundant GOA units arranged in sequence. The plurality of effective GOA units forms a plurality of effective GOA modules that are arranged in sequence. In the effective GOA module, the 2m effective GOA units are sequentially connected to the 2m clock signal lines, and the 2m redundant GOA units are sequentially connected to the 2m clock signal lines. The display panel of the present invention has no periodic dark lines at low gray levels.
    Type: Grant
    Filed: April 21, 2020
    Date of Patent: September 20, 2022
    Assignee: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd.
    Inventors: Xiaojin He, Chengcai Dong, Ilgon Kim
  • Patent number: 11442579
    Abstract: A method for accidental touch prediction using machine learning (ML) classification is provided. The method includes determining, by an electronic device, a mutual data index of a sensor data using a first ML model. Further, the method includes recognizing whether the sensor data corresponds to an object touch or a non-object touch based on the mutual data index. Further, the method includes performing, by the electronic device, one of detecting that the electronic device is in a pocket mode and providing an object touch notification on a touch screen of the electronic device in response to determining that the sensor data corresponds to the object touch, and recognizing whether the sensor data corresponds to an accidental touch or a non-accidental touch using at least one second ML model based on touch data in response to determining that the sensor data corresponds to the non-object touch.
    Type: Grant
    Filed: December 9, 2020
    Date of Patent: September 13, 2022
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Ankit Agarwal, Sunil Rathour, Harshit Oberoi, Nitesh Goyal, Nitin Kishorbhai Tanwar, Vipin Khushu, Choice Choudhary
  • Patent number: 11443710
    Abstract: A display interface device capable of reducing power consumption is disclosed. In the display interface device, a timing controller configured to compare input pixel data in horizontal line units and operate in a low power mode according to a result of comparison between an input time of horizontal lines having the same pixel data and a reference time in the horizontal line units. The timing controller operates in any one of a first low power mode for transmitting a training pattern and a second low power mode including a first duration during which data transmission and reception are stopped and a second duration during which the training pattern is transmitted, according to the result of comparison between the input time of horizontal lines having the same pixel data and the reference time.
    Type: Grant
    Filed: November 4, 2020
    Date of Patent: September 13, 2022
    Assignee: LG Display Co., Ltd.
    Inventors: Jin-Sung Kim, Gyeong-Hwan Kim
  • Patent number: 11443693
    Abstract: A display control device for controlling a display device including a display panel having a plurality of pixels arranged in rows and columns includes: a first driving unit supplying a data voltage corresponding to a luminance to the pixels by the columns; and a second driving unit selecting the pixels receiving the data voltage by the rows, wherein the first driving unit and the second driving unit, in one frame: sequentially supply the data voltage for an image display to the pixels of a first block including a first group of the rows; supply a black level voltage to the pixels of a second block including a second group of the rows; and supply the black level voltage to the pixels in at least one of the rows of the first block while the black level voltage is supplied to the pixels of the second block.
    Type: Grant
    Filed: October 12, 2020
    Date of Patent: September 13, 2022
    Assignee: LG Display Co., Ltd.
    Inventor: Shinji Takasugi
  • Patent number: 11443698
    Abstract: A display device includes a display panel, a data driver which provides data voltages to the display panel, and a controller which provides output image data to the data driver. The controller includes a data line memory which stores input image data for each pixel row of the display panel, an address line memory which stores addresses for the input image data, and a data serialize block which generates the output image data provided to the data driver by rearranging the input image data stored in the data line memory based on the addresses stored in the address line memory.
    Type: Grant
    Filed: February 10, 2021
    Date of Patent: September 13, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventor: Hai-Jung In
  • Patent number: 11430401
    Abstract: The present application discloses a drive circuit, a display module driving method and a display module. The drive circuit includes: a timing control chip, configured to output a state signal; a control circuit, configured to receive the state signal and output a ready signal; and a gate drive circuit, configured to control, according to the ready signal, whether a display screen displays a picture or not.
    Type: Grant
    Filed: November 13, 2018
    Date of Patent: August 30, 2022
    Assignee: HKC CORPORATION LIMITED
    Inventor: Mingliang Wang
  • Patent number: 11430899
    Abstract: A display device including a pixel having a memory. The pixel includes at least a display element, a capacitor, an inverter, and a switch. The switch is controlled with a signal held in the capacitor and a signal output from the inverter so that voltage is supplied to the display element. The inverter and the switch can be constituted by transistors with the same polarity. A semiconductor layer included in the pixel may be formed using a light-transmitting material. Moreover, a gate electrode, a drain electrode, and a capacitor electrode may be formed using a light-transmitting conductive layer. The pixel is formed using a light-transmitting material in such a manner, whereby the display device can be a transmissive display device while including a pixel having a memory.
    Type: Grant
    Filed: July 13, 2021
    Date of Patent: August 30, 2022
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Hajime Kimura, Kengo Akimoto, Masashi Tsubuku, Toshinari Sasaki
  • Patent number: 11431935
    Abstract: There is provided a solid-state imaging element in which a first substrate in which a pixel circuit including a pixel array unit is formed and a second substrate in which a plurality of signal processing circuits are formed are laminated, and a common reference clock is supplied to the plurality of signal processing circuits that are formed on the second substrate.
    Type: Grant
    Filed: July 22, 2021
    Date of Patent: August 30, 2022
    Assignee: Sony Corporation
    Inventors: Kunihiko Izuhara, Yuuko Sonoda
  • Patent number: 11423844
    Abstract: A high-definition display device is provided. A small display device is provided. In the display device, a first layer and a second layer are stacked and provided. The first layer includes a gate driver circuit and a source driver circuit, and the second layer includes a display portion. The gate driver circuit and the source driver circuit are provided to include a region overlapping with the display portion. The gate driver circuit and the source driver circuit have an overlap region where they are not strictly separated from each other. Five or more gate driver circuits and five or more source driver circuits can be provided.
    Type: Grant
    Filed: May 9, 2019
    Date of Patent: August 23, 2022
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Takayuki Ikeda, Hidetomo Kobayashi, Hideaki Shishido, Kiyotaka Kimura, Takashi Nakagawa, Kosei Nei
  • Patent number: 11422410
    Abstract: Provided are a substrate that can exert an anchoring force causing liquid crystal molecules to be vertically aligned and a liquid crystal display device. The substrate of the present invention is to be used in contact with a liquid crystal composition containing liquid crystal molecules and an alignment aid having a polar group and having the function of causing the liquid crystal molecules to be aligned spontaneously. The substrate includes an insulating film having a contact surface to be in contact with the liquid crystal composition. The static contact angle of water on the contact surface at 25° C. is 70° or less and/or the surface free energy of the contact surface is 50 mN/m or more. The substrate is preferably a substrate in direct contact with the liquid crystal composition with no alignment film therebetween.
    Type: Grant
    Filed: June 20, 2019
    Date of Patent: August 23, 2022
    Assignee: DIC CORPORATION
    Inventors: Ryo Kanda, Hirokazu Sugiyama, Shinichi Hirata
  • Patent number: 11417257
    Abstract: The present disclosure relates to display devices, and more specifically, to a display device with a sensor circuit capable of sensing the presence or absence of an abnormality in a signal line located in a bending area. Through these, a display device is provided that enables an accurate check to be performed for the presence or absence of an abnormality, such as a crack, or the like in signal lines located in the bending area, and thus, has a normal bending structure without defects.
    Type: Grant
    Filed: December 11, 2020
    Date of Patent: August 16, 2022
    Assignee: LG Display Co., Ltd.
    Inventors: Jaehyun You, JooHwan Kim, DongGeun Bae
  • Patent number: 11410584
    Abstract: Disclosed is an electronic device including a display including a first part where a size viewed from an outside is constant and a second part where an area viewed from the outside is variable, a display driver integrated circuit (IC) configured to control the display, a memory, and a processor operatively connected with the display driver IC and the memory, wherein the processor is configured to, based on the area of the second part viewed from the outside, define a plurality of virtual regions including a first region and a second region adjacent to each other, based on an accumulated value of red, green, blue (RGB) values applied to each frame displayed on a screen, acquire color information of each of the plurality of virtual regions, based on an accumulated use time for each of the plurality of virtual regions and the color information, calculate a plurality of total accumulated values of each of the plurality of virtual regions, set a boundary, which is positioned between the first region and the second
    Type: Grant
    Filed: September 13, 2021
    Date of Patent: August 9, 2022
    Inventors: Youngrog Kim, Jookwan Lee, Junwoo Choi
  • Patent number: 11410623
    Abstract: A control method of a time sequential control signal and a driving circuit are provided. A main TCON chip and an assist TCON chip compute corresponding frame rates according to pixel clock signal frequencies, then call a corresponding table, and transmit the table to a first driving unit and a second driving unit respectively. The first driving unit and the second driving unit respectively perform scanning on rows and columns of pixels to allow complicated dynamic images to be displayed with smooth motions.
    Type: Grant
    Filed: May 12, 2020
    Date of Patent: August 9, 2022
    Assignee: TCL CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Xiaoli Fang, Guangxing Xiao
  • Patent number: 11410624
    Abstract: Disclosed is a driving circuit of display panel. The driving circuit of display panel includes a pixel unit array, a gate driving unit, a plurality of data signal lines, a switch control unit, a plurality of first switch units and a plurality of second switch units. Each of the pixel unit columns is connected to the gate driving unit through one of the data signal lines. The switch control unit is respectively connected to each of the first switch units and each of the second switch units. When the plurality of first switch units are turned off and the plurality of second switch units are turned on, charges of each of the pixel units in the plurality of pixel unit columns are neutralized.
    Type: Grant
    Filed: December 11, 2018
    Date of Patent: August 9, 2022
    Assignee: HKC CORPORATION LIMITED
    Inventor: Xiaoyu Huang
  • Patent number: 11399135
    Abstract: Disclosed herein is a full-screen display device capable of sufficiently securing light transmittance of a sensor area overlapping a sensor unit in a pixel array and minimizing deterioration in perceived image quality of the sensor area. The pixels are arranged in the sensor area overlapping the sensor unit in the pixel array of the full-screen display device such that the number of pixels gradually decreases from the outer periphery toward the center of the sensor area in units of masks, and the area of a transmission portion gradually increases from the outer periphery toward the center of the sensor area in units of masks.
    Type: Grant
    Filed: December 11, 2019
    Date of Patent: July 26, 2022
    Assignee: LG Display Co., Ltd.
    Inventors: Young-Tae Kim, Jun-Woo Jang, Tae-Yong Park, Woong-Jin Seo
  • Patent number: 11393852
    Abstract: According to one embodiment, a semiconductor device including, a panel including an inorganic film, and a first pad and a second pad positioned on the inorganic film, and a line substrate including a first connection line electrically connected to the first pad, and a second connection line electrically connected to the second pad, the line substrate positioned on the panel, wherein the inorganic film includes a first cut portion overlapping the first connection line, a second cut portion overlapping the second connection line, and a first extension portion between the first cut portion and the second cut portion, and the first cut portion, the second cut portion, and the first extension portion extend to a first side of the panel.
    Type: Grant
    Filed: December 14, 2020
    Date of Patent: July 19, 2022
    Assignee: JAPAN DISPLAY INC.
    Inventor: Takanori Tsunashima
  • Patent number: 11393407
    Abstract: An electronic device includes a first source group and a second source group, each of which includes a plurality of source channels, and a gamma block that receives first to 2i-th initial voltages (i being an integer of 1 or more), outputs first to 2i-th intermediate voltages by amplifying the first to i-th initial voltages, and outputs first to i-th gamma voltages to the first source group by buffering the first to 2i-th intermediate voltages, and a first buffer block that receives the first to 2i-th intermediate voltages from the gamma block and buffers the first to 2i-th intermediate voltages so as to be output to the second source group, and the gamma block may include a first resistor string including a plurality of resistors connected between nodes from which the first to i-th gamma voltages are output.
    Type: Grant
    Filed: December 1, 2020
    Date of Patent: July 19, 2022
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: In-Suk Kim, Jungmoon Kim, Woo-Nyoung Lee
  • Patent number: 11387310
    Abstract: An array substrate and a display panel are disclosed. The array substrate includes: a base substrate including a display region and a peripheral region; a plurality of sub-pixels in the display region; a plurality of data lines in the display region; a plurality of first power lines in the display region; a plurality of data lead lines in the peripheral region; a plurality of selection switches in the peripheral region; a plurality of data signal input lines in the peripheral region; a first power bus in the peripheral region; and a plurality of connection portions electrically connecting the first power bus to the plurality of first power lines, respectively. The plurality of connection portions include a plurality of first connection portions and a plurality of second connection portions on both sides of the plurality of first connection portions.
    Type: Grant
    Filed: October 14, 2019
    Date of Patent: July 12, 2022
    Assignees: CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Huijuan Yang, Tingliang Liu, Gen Li, Yang Zhou
  • Patent number: 11386823
    Abstract: The present disclosure provides an array substrate and a method of driving the same, and a display device. The array substrate includes a plurality of sets of transistors, each set of transistors include at least two columns of drive transistors. A target column of drive transistors of each set of transistors are connected to a data line, and the rest drive transistors are connected to the target column of drive transistors.
    Type: Grant
    Filed: April 24, 2019
    Date of Patent: July 12, 2022
    Assignees: HEFEI BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Tingting Jin, Liangliang Zheng, Site Cai
  • Patent number: 11380736
    Abstract: The embodiments of the present disclosure provide a display panel and a display apparatus. The display panel includes: a first substrate; a plurality of sub-pixels arranged in an array on the substrate, the plurality of sub-pixels comprising a first type of sub-pixels and a second type of sub-pixels; and at least one data line, each of which is disposed between adjacent columns of sub-pixels of the array and extending along a second direction, an overlapped area of projection of each data line on the first substrate and projection of the first type of sub-pixels on the first substrate has a first width, and an overlapped area of the projection of each data line on the first substrate and projection of the second type of sub-pixels on the first substrate has a second width less than the first width.
    Type: Grant
    Filed: September 10, 2020
    Date of Patent: July 5, 2022
    Assignees: BEIJING BOE DISPLAY TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Qiujie Su, Zhihua Sun
  • Patent number: 11380245
    Abstract: The present disclosure discloses a display drive method, a display drive apparatus, a display apparatus, and a wearable device. The display drive method includes: receiving an original display data signal; sampling the original display data signal based on a clock input signal to obtain a display mode signal, a gate line scanning signal, and an initial data voltage signal; shifting the initial data voltage signal according to the display mode signal to obtain a data voltage signal; and controlling the display apparatus to display based on the display mode signal, the gate line scanning signal, and the data voltage signal.
    Type: Grant
    Filed: June 12, 2019
    Date of Patent: July 5, 2022
    Assignees: Beijing BOE Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Qibing Gu, Hsinchung Lo, Chen Meng, Rui Liu, Wei Sun, Guangquan Wang, Ming Chen
  • Patent number: 11380279
    Abstract: The present disclosure is related to a display driving method. The display driving method may include obtaining a grayscale data voltage compensation table; calculating a value of VCOM shift amplitude corresponding to a row of sub-pixels on a display panel based on grayscale data voltages of a frame of an image to be displayed; obtaining a grayscale data voltage compensation value corresponding to the row of sub-pixels on the display panel based on the calculated value of VCOM shift amplitude and the grayscale data voltage compensation table; compensating grayscale data voltages actually inputted to the row of sub-pixels based on the grayscale data voltage compensation value to obtain compensated grayscale data voltages; and outputting the compensated grayscale data voltages to the row of sub-pixels during a display time of the frame of the image to be displayed.
    Type: Grant
    Filed: June 11, 2018
    Date of Patent: July 5, 2022
    Assignees: HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD, BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Zejun Chen, Jianjun Wang, Xiaoshi Liu, Min Wang, Hui Dong
  • Patent number: 11374034
    Abstract: A display panel includes a pixel array, a plurality of first wirings, a plurality of second wirings, a conductive line and an insulation layer. The pixel array includes a plurality of first pixels and a plurality of second pixels. The first wirings are electrically connected to the first pixels, respectively. The second wirings are electrically connected to the second pixels, respectively. The conductive line extends to partially overlap the second wirings and is electrically connected to the second wirings, in which the conductive line is configured to provide a same-color signal to the second pixels. The insulation layer is disposed between the first wirings and the conductive line.
    Type: Grant
    Filed: January 9, 2020
    Date of Patent: June 28, 2022
    Assignee: AU OPTRONICS CORPORATION
    Inventor: Meng-Ting Hsieh
  • Patent number: 11373580
    Abstract: A display apparatus includes a display panel configured to display an image. A gate driver is configured to output a plurality of gate signals to the display panel. A data driver includes a first area and a second area. The first area of the data driver includes a first channel group configured to output first data voltages in a first output sequence. The second area of the data driver includes a second channel group configured to output second data voltages in a second output sequence opposite to the first output sequence.
    Type: Grant
    Filed: November 23, 2020
    Date of Patent: June 28, 2022
    Assignee: SAMSUNG DISPLAY CO, LTD.
    Inventors: Taejin Kim, Jakyoung Jin
  • Patent number: 11373601
    Abstract: The present disclosure provides a display substrate, a manufacturing method and a display device. The display substrate includes a scan driving circuit, at least one shift register unit includes an output circuit, a first energy storage circuit, and a first leakage prevention circuit; the scan driving circuit also includes a first voltage signal line and a second voltage signal line; a first voltage signal line is located on a side of the second voltage signal line away from the display area; the output circuit is respectively coupled to the first voltage signal line and the second voltage signal line, the first energy storage circuit is respectively coupled to the output circuit and the second voltage signal line, the first leakage prevention circuit is coupled to the output circuit; the output circuit is arranged between the first voltage signal line and the second voltage signal line.
    Type: Grant
    Filed: May 13, 2020
    Date of Patent: June 28, 2022
    Assignees: CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Lingran Wang, Jun Yan, Wenhui Gao
  • Patent number: 11367390
    Abstract: A display apparatus and a method for noise reduction are introduced. The method comprises steps of sensing a first pixel signal being superimposed by noises from a first pixel through a first sensing line in a first phase of a sensing operation and sensing a first noise signal from the first sensing line in a second phase of the sensing operation. The method further comprises steps of sensing a second noise signal from a second sensing line in the first phase of the sensing operation, and sensing a third noise signal from the second sensing line in the second phase of the sensing operation. The method further removes the noises that are superimposed to the first pixel signal according to a difference between the first pixel signal and the first noise signal and a difference between the second noise signal and the third noise signal to generate a denoised sensing value of the first pixel.
    Type: Grant
    Filed: June 2, 2019
    Date of Patent: June 21, 2022
    Assignee: Novatek Microelectronics Corp.
    Inventors: Keko-Chun Liang, Yu-Hsiang Wang, Jhih-Siou Cheng, Yi-Chuan Liu, Ju-Lin Huang
  • Patent number: 11361715
    Abstract: The present disclosure provides a shift register unit, a gate driving circuitry and a method for driving the gate driving circuitry. The shift register unit includes an input circuitry, a first latch circuitry, a second latch circuitry and an output end. The input circuitry is configured to output an input control signal to the first latch circuitry in accordance with a first level signal, a second level signal and a first ON signal. The first latch circuitry is configured to output an output signal as a gate driving signal via the output end in accordance with a first clock signal and the input control signal, and latch the output signal. The second latch circuitry is configured to output a second ON signal in accordance with a second clock signal and the output signal, and latch the second ON signal.
    Type: Grant
    Filed: June 20, 2021
    Date of Patent: June 14, 2022
    Assignees: Hefei BOE Joint Technology Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Xuehuan Feng, Yongqian Li, Pan Xu
  • Patent number: 11348540
    Abstract: This application discloses a display device driving method and a display device. The driving method includes steps of: synchronously starting a backlight circuit, a timing control circuit and a power circuit; outputting a first signal after the timing control circuit is initialized; outputting a second signal after the power circuit is started; and controlling a gate driver to output a drive signal according to the first signal and the second signal.
    Type: Grant
    Filed: November 29, 2018
    Date of Patent: May 31, 2022
    Assignee: HKC CORPORATION LIMITED
    Inventor: Mingliang Wang
  • Patent number: 11340657
    Abstract: A display device with low power consumption is provided. Furthermore, a display device in which an image is displayed in a region that can be used in a folded state is provided. The conceived display device includes a display portion that can be opened and folded, a sensing portion that senses a folded state of the display portion, and an image processing portion that generates, when the display portion is in the folded state, an image in which a black image is displayed in part of the display portion.
    Type: Grant
    Filed: December 2, 2020
    Date of Patent: May 24, 2022
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Yoshiharu Hirakata, Hiroyuki Miyake, Seiko Inoue, Shunpei Yamazaki
  • Patent number: 11335287
    Abstract: The present disclosure provides a display panel, a driving method for a display panel, and a display device. The driving method for the display panel includes a first column of pixels and a second column of pixels. When charging the second column of pixels corresponding to a 2nth row of scanning lines, the second column of pixels corresponding to a (2n+4)th row of scanning lines is pre-charged.
    Type: Grant
    Filed: February 20, 2019
    Date of Patent: May 17, 2022
    Assignee: HKC CORPORATION LIMITED
    Inventor: Hongyan Chang
  • Patent number: 11328683
    Abstract: A display device has: a display panel; a source driver group including 2j source drivers that are arranged in the lengthwise direction of gate lines; and a display controller that is connected to the 2j source drivers via j data supply lines provided in common between adjacent pairs of source drivers. The display controller outputs j pixel data piece groups, into which m/2 pixel data pieces were divided, to the data supply lines. The (2k)th source driver receives m/(4j) pixel data pieces via a data supply line, and receives three pixel data pieces from the (2k+1)th source driver. The (2k)th source driver generates m/(2j) of gradation voltage signals on the basis of the pixel data pieces.
    Type: Grant
    Filed: February 2, 2021
    Date of Patent: May 10, 2022
    Assignee: LAPIS SEMICONDUCTOR CO., LTD.
    Inventor: Daisei Nagata
  • Patent number: 11328685
    Abstract: A common voltage calibration circuit and a driving method thereof, a circuit board and a display device are provided. The common voltage calibration circuit includes a difference circuit, a compensation circuit and a summing circuit; the difference circuit is configured to perform a difference processing on a common voltage provided by the common voltage input terminal and a feedback common voltage provided by the common voltage feedback terminal to output a difference value signal; the compensation circuit is configured to receive the difference value signal and compensate the common voltage based on the difference value signal; and the summing circuit is configured to superimpose at least two compensation signals output by the compensation circuit and output through the common voltage output terminal.
    Type: Grant
    Filed: July 17, 2018
    Date of Patent: May 10, 2022
    Assignees: Hefei Xinsheng Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Kun Yang, Wenwu Lu, Chunyang Nie, Ke Dai
  • Patent number: 11328684
    Abstract: A display device includes a first display panel with a touch function, a second display panel without a touch function, a first data line drive circuit and a first demultiplexer circuit configured to drive data lines of the first display panel in a time-division manner in accordance with K first control signals, and a second data line drive circuit and a second demultiplexer circuit configured to drive data lines of the second display panel in a time-division manner in accordance with K second control signals. A horizontal period used to drive the first display panel is shorter than a horizontal period used to drive the second display panel, and a length of a period in which each of the first control signals is at a selection level and a length of a period in which each of the second control signals is at a selection level are approximately the same.
    Type: Grant
    Filed: May 18, 2021
    Date of Patent: May 10, 2022
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Akira Tagawa, Jun Nishimura
  • Patent number: 11320923
    Abstract: A control circuit for a display apparatus is provided and includes a buffer configured to temporarily store therein externally-supplied image data; and a controller configured to output pixel signals to signal lines of the display apparatus based on the image data stored in the buffer and read detection signals generated in detection conductors which extend along the signal lines of the display apparatus due to the pixel signals.
    Type: Grant
    Filed: January 28, 2021
    Date of Patent: May 3, 2022
    Assignee: Japan Display Inc.
    Inventors: Chihiro Tanaka, Naoki Takada, Toshihiko Tanaka
  • Patent number: 11315462
    Abstract: TA dual source driver includes first and second gamma voltage generators configured to generate first and second gamma voltages, respectively, first and second latches configured to latch first and second data, respectively, a first driving cell configured to receive the first gamma voltage and the first data, and to transmit a first voltage corresponding to the first data and the first gamma voltage to a panel load based on a first switching operation, and a second driving cell configured to receive the second gamma voltage and the second data, and to transmit a second voltage corresponding to the second data and the second gamma voltage to the panel load based on a second switching operation. The first switching operation and the second switching operation may operate complementarily to each other.
    Type: Grant
    Filed: July 14, 2020
    Date of Patent: April 26, 2022
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Sungho Lee, Hohak Rho, Junjae Lee
  • Patent number: 11315517
    Abstract: A modulated data signal is generated so as to change such that a length of a data period indicative of a timing of writing of the gradation voltage signal to each of the pixel portions becomes a length according to a distance from the data driver to each of the pixel portions. The timing control unit writes a video data signal to a memory at a timing according to a data period of the video data signal. The timing control unit reads the video data signal from the memory at a timing according to a period as a result of correction of a data period of the modulated data signal on the basis of a difference between an average value of lengths of the data periods of the video data signals and an average value of lengths of the data periods of the modulated data signals.
    Type: Grant
    Filed: July 7, 2020
    Date of Patent: April 26, 2022
    Assignee: LAPIS SEMICONDUCTOR CO., LTD.
    Inventor: Keita Watanabe
  • Patent number: 11315518
    Abstract: A method and apparatus for overdriving pixel elements to a desired voltage. A display device comprises a pixel array and overdrive circuitry to determine a current pixel value for a first pixel element of the pixel array and a target pixel value for the first pixel element. The overdrive circuitry is further configured to determine a first voltage to be applied to the first pixel element to cause the first pixel element to transition from the current pixel value to the target pixel value by a first instance of time. The first voltage is determined based at least in part on a position of the first pixel element in the pixel array. The display device further comprises a data driver to apply the first voltage to the first pixel element before the first instance of time and a backlight to illuminate the pixel array at the first instance of time.
    Type: Grant
    Filed: August 3, 2020
    Date of Patent: April 26, 2022
    Assignee: SYNAPTICS INCORPORATED
    Inventor: Stephen L. Morein
  • Patent number: 11315508
    Abstract: The present invention provides a liquid crystal display panel including a color film substrate and an array substrate, and a plurality of input terminals, a scan line, and a data line. Wherein each of the input terminals is respectively connected to at least two data lines, a signal screening unit in series between at least part of the data lines and the corresponding input terminal. The input terminal is connected to an alternating current signal, and the signal screening unit is used for screening the alternating current signal to select a positive voltage signal or a negative voltage signal to the data lines.
    Type: Grant
    Filed: December 19, 2019
    Date of Patent: April 26, 2022
    Inventor: Ningbo Yi
  • Patent number: 11302281
    Abstract: Disclosed are a register value transmission method and transmitter, and a display device. The method may be used for a timing controller, and the method includes receiving a user triggered information setting directive including n register values for instructing a source driver to set configuration information of the source driver according to the n register values, n being greater than 1, generating an information setting instruction including the n register values according to the information setting directive, and sending the information setting instruction to the source driver. The disclosure solves the problem of low flexibility of matching the number of register values at both a receiving end and a sending end, and improves the flexibility of matching the number of register values.
    Type: Grant
    Filed: June 4, 2018
    Date of Patent: April 12, 2022
    Assignees: BEIJING BOE DISPLAY TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Jun Guo, Xin Duan, Jieqiong Wang, Ming Chen
  • Patent number: 11295689
    Abstract: A driving method, a drive circuit and a display device are provided. The driving method includes: receiving a drive control signal output by a timing control circuit and a drive voltage signal output by a drive circuit; performing an AND calculation of the drive control signal and the drive voltage signal to output a corresponding execution control signal; and outputting an initial scanning signal by the timing control circuit according to the execution control signal.
    Type: Grant
    Filed: December 14, 2018
    Date of Patent: April 5, 2022
    Assignee: HKC CORPORATION LIMITED
    Inventor: Beizhou Huang
  • Patent number: 11282426
    Abstract: A display device, including: pixels coupled to scan lines and data lines; a data driver configured to supply respective data signals to the data lines, including an amplifier disposed at an output terminal of the data driver, the amplifier including a first power terminal and a second power terminal; a switch unit configured to perform a power switching operation of alternately connecting the first power terminal and the second power terminal of the amplifier to a first driving power source and a second driving power source; and a driving controller configured to control the data driver and the switch unit, wherein the driving controller is configured to output a switch control signal to control the switch unit and interrupt the power switching operation during a blank period between source output periods, during which the data driver is configured to output the data signals of each frame.
    Type: Grant
    Filed: May 7, 2020
    Date of Patent: March 22, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jae Cheon Park, Seung Kyu Lee, Yoon Gyu Lee, Chae Han Hyun
  • Patent number: 11276346
    Abstract: A sensing circuit for an organic light-emitting diode driver includes a sample and hold circuit and a gain amplifier. The sample and hold circuit is configured to sample a sensing signal received via an input terminal. The gain amplifier is coupled to the sample and hold circuit. The sample and hold circuit includes a first capacitor, a second capacitor, a first switch, a second switch, a third switch and a fourth switch. The first capacitor is coupled between the input terminal and the gain amplifier. The second capacitor is coupled between a reference terminal and the gain amplifier. The first switch is connected between the first capacitor and the input terminal. The second switch is connected between the second capacitor and the reference terminal. The third switch is connected between the first capacitor and the gain amplifier. The fourth switch is connected between the second capacitor and the gain amplifier.
    Type: Grant
    Filed: January 21, 2019
    Date of Patent: March 15, 2022
    Assignee: NOVATEK Microelectronics Corp.
    Inventors: Jin-Yi Lin, Chieh-An Lin, Jhih-Siou Cheng, Ju-Lin Huang
  • Patent number: 11270631
    Abstract: A display apparatus includes a display panel including an active area that includes at least one module area and a bezel area positioned outside the active area, wherein a pixel array is positioned in the active area, and the at least one module area is formed as a light-transmissive area.
    Type: Grant
    Filed: November 18, 2020
    Date of Patent: March 8, 2022
    Assignee: LG Display Co., Ltd.
    Inventors: Namwook Cho, Changsoo Kim, Cheolhwan Lee
  • Patent number: 11263945
    Abstract: This application discloses a driving method of a display panel, a driving circuit and a display device. The display panel includes a first gate driving circuit and a second gate driving circuit respectively controlling all gate lines in a scanning display area, and the driving method includes the following steps: when a first preset condition is met, controlling the first gate driving circuit to be in a dormant state, and meanwhile, controlling the second gate driving circuit to be in a working state; and when a second preset condition is met, controlling the second gate driving circuit to be in a dormant state, and meanwhile, controlling the first gate driving circuit to be in a working state.
    Type: Grant
    Filed: January 29, 2019
    Date of Patent: March 1, 2022
    Assignee: HKC CORPORATION LIMITED
    Inventor: Zeyao Li
  • Patent number: 11258392
    Abstract: According to one embodiment, an electronic circuitry that converts DC voltage into AC voltage includes first to fourth switching circuitries. A cycle includes first and second periods. During the first period, the first and second switching circuitries are turned on, and the third and fourth switching circuitries are turned off, and during the second period, the first switching and second circuitries are turned off, and the third and fourth switching circuitries are turned on. At least one of the first to fourth switching circuitries includes a first switching element and a second switching element in parallel. During a time period during which at least one of the first to fourth switching circuitries is turned on, the first switching element is turned on during a first subperiod, and the second switching element is turned on during a second subperiod that overlaps the first subperiod.
    Type: Grant
    Filed: September 3, 2020
    Date of Patent: February 22, 2022
    Assignee: KABUSHIKI KAISHA TOSHIBA
    Inventors: Hiroshi Uno, Masatoshi Suzuki
  • Patent number: 11257408
    Abstract: The present disclosure relates to a drive device and a drive method of a display panel, and a display device. The drive device includes a driving unit configured to output a drive signal for driving a sub-pixel. The drive device includes a compensating unit coupled to the driving unit and a fanout line of a fanout region. The drive device is configured to compensate an impedance of the fanout line based on a reference impedance and the drive signal. The fanout region includes a plurality of fanout lines, and the reference impedance is a maximum impedance among the impedances of the plurality of fanout lines or an impedance greater than the maximum impedance.
    Type: Grant
    Filed: March 11, 2018
    Date of Patent: February 22, 2022
    Assignees: BOE Technology Group Co., Ltd., Chongqing BOE Optoelectronics Technology Co., Ltd.
    Inventor: Yang Liu
  • Patent number: 11250806
    Abstract: The present disclosure provides a common voltage regulating circuit and a common voltage regulating method, a display driving circuit and a display device, the common voltage regulating circuit is applied to a display panel, and the display panel includes a pixel electrode and a common electrode, the common voltage regulating circuit includes: a first regulating sub-circuit configured to provide a signal from a second signal input terminal to a first signal output terminal under the control of an enabling signal terminal in a power-on stage of the display panel; the first signal input terminal is configured to input a signal to be provided to the common electrode in a display stage of the display panel, the second signal input terminal is configured to input a signal to be provided to the pixel electrode in the power-on stage, the first signal output terminal is coupled with the common electrode.
    Type: Grant
    Filed: December 18, 2019
    Date of Patent: February 15, 2022
    Assignees: HEFEI BOE DISPLAY TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yizhan Han, Jianwei Sun, Liugang Zhou, Xiaolong Suo