Waveform Generator Coupled To Display Elements Patents (Class 345/208)
  • Patent number: 11164897
    Abstract: The display device includes, on a substrate, a plurality of pixel electrodes, M (M is a natural number equal to or greater than three) counter electrodes disposed opposite the plurality of pixel electrodes, M counter electrode wiring lines connected with M counter electrodes, and N (N is a natural number and 2?N<M) common voltage wiring lines connected to the M counter electrode wiring lines. Counter electrode wiring lines connected to counter electrodes adjacent to each other are connected to common voltage wiring lines that are different from each other.
    Type: Grant
    Filed: October 6, 2020
    Date of Patent: November 2, 2021
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Shige Furuta, Hiroyuki Adachi, Keiichi Ina, Takahiro Yamaguchi, Yuhichiroh Murakami
  • Patent number: 11151931
    Abstract: A scan driver includes scan stages, an n-th scan stage of the scan stages includes a first driving circuit, a second driving circuit, and an output circuit. The first driving circuit controls a voltage of a first driving node, based on an input signal and a voltage of a second driving node. The second driving circuit controls the voltage of the second driving node, based on a second clock signal and a first voltage. The output circuit outputs a first clock signal as a scan signal and a carry signal, and outputs a second voltage as the scan signal and the carry signal. The first driving circuit includes a first transistor including a gate electrode electrically connected to the second driving node, one electrode electrically connected to an input line that provides the input signal, and another electrode electrically connected to the first driving node.
    Type: Grant
    Filed: May 22, 2020
    Date of Patent: October 19, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jong Hee Kim, Hyuk Kim, An Su Lee
  • Patent number: 11132934
    Abstract: A shift register unit, a gate driving circuit, a display device, and a driving method are provided. The shift register unit includes an input circuit, an output circuit, and a first node control circuit. The input circuit is configured to charge a first node in response to an input signal; the output circuit is configured to output an output signal at an output terminal under control of a level signal of the first node; and the first node control circuit is configured to receive a precharge control signal from a precharge control terminal and charge the first node in response to the precharge control signal before the output terminal outputs the output signal.
    Type: Grant
    Filed: August 16, 2019
    Date of Patent: September 28, 2021
    Assignees: Hefei Xinsheng Optoelectronics Technology Co., Ltd., BOE Technology Group Co., Ltd.
    Inventors: Yongxian Xie, Jinliang Liu, Hui Wang, Miao Zhang
  • Patent number: 11087708
    Abstract: The present invention provides a method for transmitting data from a timing controller to a source driver, wherein the method includes the steps of: applying a plurality of data rates to a discrete data rate setting; and transmitting image data of a plurality of frames by using a plurality of modulated data rates, respectively; wherein the plurality of modulated data rates are generated by performing spread-spectrum clocking (SSC) upon the plurality of data rates, respectively; and for each of the frames, its corresponding image data is transmitting by using only one of the modulated data rates.
    Type: Grant
    Filed: June 5, 2019
    Date of Patent: August 10, 2021
    Assignee: HIMAX TECHNOLOGIES LIMITED
    Inventors: Mong-Hua Tu, Peng-Chi Chen, Chih-Hsiang Lin, Yin-Ho Chiang, Jen-Chieh Liu, Shih-Po Chen, Cheng-Yu Shih, Chien-Lung Cho, Yi-Ping Tu
  • Patent number: 11087707
    Abstract: A driving method and device for a GOA circuit, and a display device. The driving method includes: reducing a clock signal frequency of the GOA circuit to 1/M of an original clock signal frequency, in a case where data signals of one frame of image satisfy a frequency reduction condition. The frequency reduction condition includes that the data signals of the one frame of image is capable of being equally divided into M parts in time sequence, data signals of each of the M parts are the same, and M is an integer and M?2.
    Type: Grant
    Filed: May 23, 2019
    Date of Patent: August 10, 2021
    Assignees: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Lei Guo, Shuai Xu
  • Patent number: 11087203
    Abstract: The present application discloses a method and apparatus for processing a data sequence. A specific implementation of the method includes: receiving an inputted to-be-processed data sequence; copying a weight matrix in a recurrent neural network model to an embedded block random access memory (RAM) of a field-programmable gate array (FPGA); processing sequentially each piece of to-be-processed data in the to-be-processed data sequence by using an activation function in the recurrent neural network model and the weight matrix stored in the embedded block RAM; and outputting a processed data sequence corresponding to the to-be-processed data sequence. This implementation improves the data sequence processing efficiency of the recurrent neural network model.
    Type: Grant
    Filed: June 9, 2017
    Date of Patent: August 10, 2021
    Assignee: Beijing Baidu Netcom Science and Technology, Co., Ltd
    Inventors: Yong Wang, Jian Ouyang, Wei Qi, Sizhong Li
  • Patent number: 11049455
    Abstract: Disclosed are a display device, an electronic device, and a toggling circuit, which can reduce or prevent a motion blur phenomenon without a significant change in the performance of an interface, a controller, or a source-driving circuit by toggling driving voltages and individually executing driving voltage lines.
    Type: Grant
    Filed: August 3, 2018
    Date of Patent: June 29, 2021
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Beom-Jin Kim, Gyungmin Kim
  • Patent number: 11024246
    Abstract: A display apparatus is disclosed. The display apparatus according to one embodiment comprises: a display panel comprising a plurality of pixels arranged in a matrix, a plurality of scanning lines, and a plurality of data lines; a timing control unit to generate a scanning line clock signal in which a level transition is repeated; a plurality of scanning line drive units to successively output a scanning line signal based on the scanning line clock signal to the scanning lines; and a signal correcting unit to correct either one of the scanning line clock signal and the scanning line signal such that time differences between a timing of one level transition of the scanning line clock signal and a timing of a level transition of the scanning line signal based on the one level transition substantially match among the scanning line signals output by respective scanning line drive units.
    Type: Grant
    Filed: November 1, 2019
    Date of Patent: June 1, 2021
    Assignee: SAKAI DISPLAY PRODUCTS CORPORATION
    Inventor: Shuhei Haga
  • Patent number: 11011247
    Abstract: A source driving sub-circuit includes a shift register circuit and a latch circuit. The latch circuit includes a resetter and a latch. The resetter is coupled to an enabling signal terminal, a reset signal terminal and the latch. The latch is coupled to the shift register circuit and a data signal terminal. The latch is configured to receive signals output from the shift register circuit and at least in response to the signals output from the shift register circuit. And the resetter is configured to receive a signal provided from the enabling signal terminal and a signal provided from the reset terminal, and reset the at least one data signal latched by the latch in response to the signal provided from the enabling signal terminal.
    Type: Grant
    Filed: August 7, 2018
    Date of Patent: May 18, 2021
    Assignees: ORDOS YUANSHENG OPTOELECTRONICS CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Jiguo Wang, Jun Fan, Yishan Fu
  • Patent number: 11011129
    Abstract: Disclosed is a display device which is capable of increasing a lifespan of a gate driver by maintaining a deterioration balance among a plurality of pull-down transistors, wherein the display device may include a display panel for displaying an image, a gate driver for supplying a gate signal to the display panel, and a timing controller for supplying a gate driver control signal to the gate driver, wherein the timing controller is set in such a way that it is turned-off until after a predetermined one among the plurality of pull-down transistors inside the gate driver is driven by the use of reset signal supplied from a reset integrated circuit.
    Type: Grant
    Filed: December 19, 2017
    Date of Patent: May 18, 2021
    Assignee: LG Display Co., Ltd.
    Inventors: JinWoo Park, Seokyu Jang, ChangBok Lee
  • Patent number: 11004385
    Abstract: Disclosed are a display panel, a driving method and a display device. The display panel includes a strobe circuit, a pixel driving circuit and a light-emitting element; the pixel driving circuit includes a first initialization unit, a driving module, and a first light-emitting control unit; the strobe circuit is electrically connected to an initialization signal end; and the first initialization unit is electrically connected between the initialization signal end and an anode of the light-emitting element; in a write frame, the first initialization unit is configured to provide a first initialization voltage signal Vref1 to the anode of the light-emitting element under the control of a first scan signal; and in a hold frame, the first initialization unit is configured to provide a second initialization voltage signal Vref2 to the anode of the light-emitting element under the control of the first scan signal.
    Type: Grant
    Filed: September 4, 2020
    Date of Patent: May 11, 2021
    Assignee: XIAMEN TIANMA MICRO-ELECTRONICS CO., LTD.
    Inventors: Jieliang Li, Yong Yuan, Wanming Huang
  • Patent number: 10984744
    Abstract: To prevent a decrease in display quality caused when a display apparatus performs pause driving. One end of the n-th scanning signal line (GLn) is connected to the n-th stage circuit (UCn) of a driver circuit. The other end of the n-th scanning signal line is connected to a waveform adjusting circuit (HKn) which adjusts the waveform of the pulse signal of the n-th scanning signal line (GLn) by using a clock signal (CKA) and the pulse signal of the m-th scanning signal line (GLn?1) scanned prior to the n-th scanning signal line.
    Type: Grant
    Filed: September 24, 2019
    Date of Patent: April 20, 2021
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Yohei Takeuchi, Takuya Watanabe, Akira Tagawa, Yasuaki Iwase, Jun Nishimura
  • Patent number: 10943556
    Abstract: A data driver for driving a display panel includes a first driving channel coupled to a polarity inversion circuit and configured to generate a first data voltage signal having a positive polarity output to the display panel according to a plurality of first pixel data; a second driving channel coupled to the polarity inversion circuit and configured to generate a second data voltage signal having a negative polarity output to the display panel according to a plurality of second pixel data; wherein the first data voltage signal is output to first output node through the polarity inversion circuit during a first line period and the second data voltage signal is output to the first output node through the polarity inversion circuit during a second line period after the first line period, and the first line period and the second line period respectively belong to two consecutive frame periods.
    Type: Grant
    Filed: June 23, 2020
    Date of Patent: March 9, 2021
    Assignee: NOVATEK Microelectronics Corp.
    Inventors: Peng-Yu Chen, Yu-Shao Liu
  • Patent number: 10923007
    Abstract: The present disclosure relates to the field of display technologies and provides a shift register unit. The shift register unit includes an input circuit, a pull-up circuit, an output circuit, an auxiliary circuit, a pull-down circuit, a first storage capacitor, and a second storage capacitor. The auxiliary circuit is coupled to a first clock signal terminal, a second clock signal terminal, an input terminal and a first output terminal. The second storage capacitor is coupled between a first node and a pull-up node.
    Type: Grant
    Filed: July 8, 2019
    Date of Patent: February 16, 2021
    Assignees: Hefei BOE Optoelectronics Technology Co., Ltd., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Ying Wang, Meng Li, Wei Xue, Hongmin Li
  • Patent number: 10911713
    Abstract: A video displaying method. The method includes applying a first frequency modulation in time domain on an original video thereby obtaining a first modulated video; applying a second frequency modulation in spatial domain on the first modulated video thereby obtaining a second modulated video including a first invisible-light image; and displaying the second modulating video with a corresponding frame rate. A time-domain frequency of the first invisible-light image is in a first range unrecognizable by a naked eye and recognizable by a video recorder. A spatial-domain frequency of the first invisible-light image is in a second range unrecognizable by the naked eye and recognizable by a video recorder.
    Type: Grant
    Filed: November 19, 2018
    Date of Patent: February 2, 2021
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., JIAXING SEC-VIEW INFORMATION TECHNOLOGY CO., LTD
    Inventors: Yingyi Li, Kairan Liu, Wenbo Li, Lin Zhu, Guangtao Zhai
  • Patent number: 10878760
    Abstract: A display device including: a display panel including a plurality of pixels; and a data driver configured to arrange the display panel into a plurality of pixel blocks, and to output a data voltage with different slew rates to the plurality of pixel blocks, wherein the slew rates are based on distances of the plurality of pixel blocks from the data driver, wherein a boundary between adjacent pixel blocks with different slew rates is changeable.
    Type: Grant
    Filed: February 11, 2019
    Date of Patent: December 29, 2020
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Sooyeon Kim, Sun-Koo Kang, Boyeon Kim, Jae-Han Lee, Taegon Im, Moonshik Kang, Junghwan Cho
  • Patent number: 10795461
    Abstract: A sensor panel is overlaid on a display apparatus and connected to an integrated circuit that detects a position of an active pen in an active region of the display apparatus. The sensor panel includes first electrodes that extend in a first direction. The sensor panel also includes second electrodes that extend in a second direction. The first electrodes include first and second outer electrodes that are located at the outermost edges of the first electrodes and first inner electrodes disposed between the first and second outer electrodes. A width of at least one of the first and second outer electrodes in the second direction is smaller than a width of each of the first inner electrodes in the second direction.
    Type: Grant
    Filed: December 13, 2018
    Date of Patent: October 6, 2020
    Assignee: Wacom Co., Ltd.
    Inventor: Jun Kadowaki
  • Patent number: 10777149
    Abstract: The present disclosure provides a driving circuit and a liquid crystal display panel, including an input module, a first control module, a second control module, a third control module, an output module and a reset module, which can simplify structure of the driving circuit while ensuring the liquid crystal display panel works well.
    Type: Grant
    Filed: August 2, 2018
    Date of Patent: September 15, 2020
    Assignee: Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd.
    Inventors: Shingo Kawashima, Guang Li
  • Patent number: 10770011
    Abstract: A buffer circuit, a display module, and a display driving method are disclosed. The buffer circuit comprises a first polarity buffer, a negative polarity buffer. The first polarity buffer receives a first supply voltage and a second supply voltage to output a first reference voltage to a first resistance string. The second supply voltage is less than the first supply voltage. The negative polarity buffer receives the second supply voltage and a third supply voltage to output a negative reference voltage to a negative resistance string. The third supply voltage is less than the second supply voltage.
    Type: Grant
    Filed: May 2, 2018
    Date of Patent: September 8, 2020
    Assignee: NOVATEK MICROELECTRONICS CORP.
    Inventors: Chieh-An Lin, Chun-Yung Cho, Jhih-Siou Cheng
  • Patent number: 10699623
    Abstract: The embodiments of the disclosure provide a source drive IC, a display device and a drive method therefor. The source drive IC comprises: a control selection module, a solid color grayscale control module and a non-solid color grayscale control module. The control selection module may be configured to receive a timing control signal inputted by a timing controller, and determine according thereto whether a current drive image is a solid color grayscale image, in response to determining that the current drive image is a solid color grayscale image, send the timing control signal to the solid color grayscale control module, and in response to determining that the current drive image is a non-solid color grayscale image, send the timing control signal to the non-solid color grayscale control module. The non-solid color grayscale control module may, according to the received timing control signal, obtain multiple sets of data voltages.
    Type: Grant
    Filed: December 15, 2017
    Date of Patent: June 30, 2020
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Dongwang Jia, Xi Wang, Xinghua Li, Junping Bao
  • Patent number: 10665178
    Abstract: A method for driving an LCD device includes displaying each picture with two frame images sequentially; the two frame images includes a first frame image and a second frame image; driving voltages for two adjacent sub-pixels in each of the frame images are different, and driving voltages in the first frame image and the second frame image for each of the sub-pixels are different; determining backlight brightness regulation signals for each of the backlight subareas; the backlight regulation signals are grouped signals, the number of the groups is identical to the number of types of the color sub-pixels; calculating an average color purity of a current picture area corresponding to each backlight subarea; determining whether the average color purity of each of the backlight subareas is within a preset range; if yes, performing a brightness regulation to a backlight source of the backlight subarea in each of the frame images of a next picture according to the backlight brightness regulation signal of the backli
    Type: Grant
    Filed: May 22, 2017
    Date of Patent: May 26, 2020
    Assignees: HKC Corporation Limited, Chongqing HKC Optoelectronics Technology Co., Ltd.
    Inventor: Yu-Jen Chen
  • Patent number: 10657918
    Abstract: Disclosed is a gate driving circuit and a display device, which belongs to the technical field of displaying, and resolves a technical problem that a signal transmitted between cascaded gate driving circuits is easily attenuated in the prior art. The gate driving circuit includes a precharging unit circuit, an output unit circuit, and a compensation charging unit circuit; the output unit circuit includes a first reference point and a first clock signal line; and the precharging unit circuit is configured to input a high level to the first reference point before an output period.
    Type: Grant
    Filed: December 30, 2016
    Date of Patent: May 19, 2020
    Assignee: WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Yafeng Li
  • Patent number: 10650754
    Abstract: A method and system for operating a pixel array having at least one pixel circuit is provided. The method includes repeating an operation cycle defining a frame period for a pixel circuit, including at each frame period, programming the pixel circuit, driving the pixel circuit, and relaxing a stress effect on the pixel circuit, prior to a next frame period. The system includes a pixel array including a plurality of pixel circuits and a plurality of lines for operation of the plurality of pixel circuits. Each of the pixel circuits includes a light emitting device, a storage capacitor, and a drive circuit connected to the light emitting device and the storage capacitor. The system includes a drive for operating the plurality of lines to repeat an operation cycle having a frame period so that each of the operation cycle comprises a programming cycle, a driving cycle and a relaxing cycle for relaxing a stress on a pixel circuit, prior to a next frame period.
    Type: Grant
    Filed: September 12, 2019
    Date of Patent: May 12, 2020
    Assignee: Ignis Innovation Inc.
    Inventors: Arokia Nathan, Gholamreza Chaji
  • Patent number: 10637801
    Abstract: A signal routing circuit is disclosed which employs resistive combiners to reduce signal jitter. A signal routing circuit configured according to an embodiment comprises an input stage including a plurality of buffer circuits. Each of the buffer circuits is controlled by a selection signal to enable an input signal at an input port of the buffer circuit to generate an output signal at an output port of the buffer circuit. The signal routing circuit also includes a plurality of resistors to couple the output port of each of the buffer circuits of the input stage to a summing junction. The signal routing circuit further includes an output stage including an additional buffer circuit. The input port of the additional buffer circuit is coupled to the summing junction, and the output port of the additional buffer circuit is configured to provide the routed output signal based on the selection signals.
    Type: Grant
    Filed: April 26, 2018
    Date of Patent: April 28, 2020
    Assignee: BAE Systems Information and Electronic Systems Integration Inc.
    Inventors: Mark D. Hickle, Joseph D. Cali, Lawrence J. Kushner
  • Patent number: 10621934
    Abstract: A display includes: a frame-rate conversion section being configured to be capable of changing a frame-rate conversion ratio having a value of 1 or more, the frame-rate conversion section converting a frame rate of an image signal at the frame-rate conversion ratio being set; and a display section displaying an image having undergone frame rate conversion.
    Type: Grant
    Filed: February 8, 2018
    Date of Patent: April 14, 2020
    Assignee: Saturn Licensing LLC
    Inventors: Masayuki Takahashi, Koichi Sono
  • Patent number: 10593282
    Abstract: A k-th driving stage includes a first pull-down transistor. The first pull-down transistor includes a first control electrode receiving a second control signal activated after the k-th gate signal is output, a second control electrode receiving the switching signal synchronized with a clock signal, an input electrode receiving a first discharge voltage, and an output electrode connected to the output electrode of the first output transistor.
    Type: Grant
    Filed: December 18, 2018
    Date of Patent: March 17, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventor: Keunwoo Kim
  • Patent number: 10565936
    Abstract: An organic light emitting display device and a driving method thereof are provided. The organic light emitting display device comprising a display panel including a plurality of pixels, each pixel including an organic light emitting element, a data driver supplying a data signal to the organic light emitting element through a data line, a gate driver supplying a gate signal to the organic light emitting element through a gate line, and a timing controller controlling an operation timing of the data driver and an operation timing of the gate driver, and generating a conversion control signal controlling a conversion timing of a refresh rate of the display panel in response to an external input signal of the display panel.
    Type: Grant
    Filed: December 6, 2017
    Date of Patent: February 18, 2020
    Assignee: LG Display Co., Ltd.
    Inventors: SungBin Ryu, JunHo Lee, YoungJang Lee
  • Patent number: 10546536
    Abstract: A stage includes first, second, and third outputs and first and second signal processors. The first output supplies a scan signal to a first output terminal based on signals to first and second input terminals and the voltage of a first node. The second output is connected to a first power source and supplies an emission control signal to a second output terminal based on signals to the first input terminal, the first output terminal, and a third input terminal. The third output is connected to the first power source and supplies an inverted emission control signal to a third output terminal based on signals to the first input terminal and second output terminal. The first signal processor controls the first node voltage based on a signal to a fourth input terminal. The second signal processor controls the first node voltage based on the signal to the second input terminal.
    Type: Grant
    Filed: June 19, 2017
    Date of Patent: January 28, 2020
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Sung Hwan Kim, Jun Hyun Park, Kyoung Ju Shin
  • Patent number: 10541255
    Abstract: The invention provides an array substrate, each sub-pixel comprising: a control TFT and a pixel electrode connected to control TFT; the pixel electrode comprising: a main region pixel electrode and a secondary region pixel electrode, layout with a gap in-between, and a first connection electrode electrically connected to the main region pixel electrode and the secondary region pixel electrode; the main and secondary region pixel electrodes being of special shape slit structure, the main region branch electrodes having a width smaller than width of the secondary region branch electrodes, the main region slit having a width smaller than width of the secondary region slit. The structural difference in the main and secondary region pixel electrodes is used to improve color shift, leading to reducing the number of TFTs in each pixel, improving pixel aperture ratio, reduces difficulty in balance control of best common voltage between main and secondary regions.
    Type: Grant
    Filed: April 19, 2017
    Date of Patent: January 21, 2020
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
    Inventor: Qiming Gan
  • Patent number: 10522084
    Abstract: A display device may include a display having a plurality of pixels. The display device may also include a replica pixel circuit having a switching device configured to output a first current based on a received voltage, a light-emitting diode (LED) configured to illuminate to a first gray level based on the first current output by the switching device, and current mirror circuitry configured to generate a second current that mirrors the first current. In addition, the replica pixel circuit may include a current source configured to output a reference current based on a voltage value that corresponds to the received voltage, comparator circuitry configured to determine a difference between the second current and the reference current, and voltage adjustment circuitry configured to adjust a source voltage output provided to the plurality of pixels based on the difference.
    Type: Grant
    Filed: September 21, 2017
    Date of Patent: December 31, 2019
    Assignee: Apple Inc.
    Inventors: Sheng Zhang, Chaohao Wang, Paolo Sacchetto, Paul S. Drzaic, Wei Chen, Wei H. Yao
  • Patent number: 10504459
    Abstract: This application provides an over-driving apparatus, a storage method thereof, and a display device using same.
    Type: Grant
    Filed: May 31, 2017
    Date of Patent: December 10, 2019
    Assignees: HKC CORPORATION LIMITED, CHONGQING HKC OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Yu-Jen Chen
  • Patent number: 10395614
    Abstract: A common voltage generating circuit is applied to a liquid crystal display circuit and includes M common voltage generating sub-circuits. The liquid crystal display circuit includes a data-driving chip, a row-driving chip, a thin film transistor (TFT) array, and a liquid crystal unit array corresponding to the TFT array. The row-driving chip is used to for opening the TFT array row-by-row through scanning lines. The data-driving chip is used for charging one row of the liquid crystal unit corresponding one row of TFT through data lines. N input terminals of a first common voltage generating sub-circuit respectively connect with adjacent N data lines output from the data-driving chip, an output terminal of the first common voltage generating sub-circuit connects with a common terminal of the liquid crystal unit corresponding to the N data lines, N is an even number.
    Type: Grant
    Filed: July 26, 2017
    Date of Patent: August 27, 2019
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd
    Inventor: Dan Cao
  • Patent number: 10373564
    Abstract: A scan driver may include a first stage, a second stage, and a third stage. The first stage may include a first output transistor. The first output transistor may have a first buffer value. The second stage may be electrically connected to the first output transistor and may include a second output transistor. The second output transistor may have a second buffer value. The third stage may be electrically connected to the second output transistor and may include a third output transistor. The third output transistor may have a third buffer value. At least one of the second buffer value and the third buffer value may be unequal to the first buffer value.
    Type: Grant
    Filed: March 14, 2017
    Date of Patent: August 6, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ji-Hye Kim, Min-Kyu Woo
  • Patent number: 10373573
    Abstract: A display device and a data compensating method thereof are disclosed. The display device includes: a liquid crystal display panel having a plurality of pixels; a color temperature compensation unit configured to determine a color temperature at each position of a light guide plate using a thermal conductivity of the light guide plate and a color temperature at a reference position of the light guide plate, and determine a color temperature compensation value at positions of the light guide plate using the color temperature; and a timing controller configured to correct at least one of an R gain value and a B gain value of the image data using the color temperature compensation value.
    Type: Grant
    Filed: September 19, 2017
    Date of Patent: August 6, 2019
    Assignee: LG Display Co., Ltd.
    Inventors: YoungKyung Kim, JoungTae Kim
  • Patent number: 10365517
    Abstract: A display device may include the following elements: a first color filter, which has a first color; a first pixel electrode, which overlaps the first color filter and includes a first stem electrode and a first branch electrode, wherein the first branch electrode is oriented at an acute angle with respect to the first stem electrode; a second color filter, which has a second color different from the first color; and a second pixel electrode, which overlaps the second color filter, immediately neighbors the first pixel electrode, and includes a second stem electrode and a second branch electrode, wherein the second stem electrode is aligned with the first stem electrode, and wherein a shape of a combination of the second stem electrode and the second branch electrode is a mirror image of a shape of a combination of the first stem electrode and the first branch electrode.
    Type: Grant
    Filed: January 12, 2016
    Date of Patent: July 30, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jong-Keun Kim, Jeong Man Son, Jin Young Lee
  • Patent number: 10360864
    Abstract: A technique of suppressing variations in property changes of switching elements in drive circuits provided for each gate line to reduce display performance degradation is provided. An active-matrix substrate includes: a plurality of drive circuits (11) provided in a display region for each gate line, for switching the gate line to a selected state; and a signal supply unit (12g) for supplying control signals (GCK1, GCK2, CLR, VSS) to each of the plurality of drive circuits for each gate line. The drive circuits (11) each include a plurality of switching elements that are turned on or off in response to the control signals.
    Type: Grant
    Filed: April 21, 2015
    Date of Patent: July 23, 2019
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Takayuki Nishiyama, Kohhei Tanaka
  • Patent number: 10354165
    Abstract: An apparatus for detecting an afterimage candidate region includes: a comparison unit which compares gradation data of an n-th frame with integrated gradation data of an (n?1)-th frame and generates integrated gradation data of the n-th frame, where n is a natural number; a memory which provides the integrated gradation data of the (n?1)-th frame to the comparison unit and stores the integrated gradation data of the n-th frame; and an afterimage candidate region detection unit which detects an afterimage candidate region based on the integrated gradation data of the n-th frame, where each of the integrated gradation data of the n-th frame and the integrated gradation data of the (n?1)-th frame comprises a comparison region and a gradation region.
    Type: Grant
    Filed: December 13, 2016
    Date of Patent: July 16, 2019
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Yong Jun Jang, Nam Gon Choi, Joon Chul Goh, Gi Geun Kim, Geun Jeong Park, Cheol Woo Park, Yun Ki Baek, Jeong Hun So, Dong Gyu Lee
  • Patent number: 10354610
    Abstract: A scanning circuit, a display device and a method for driving a scanning circuit are disclosed. The scanning circuit includes: a shading module, a control terminal of the shading module being electrically connected to a control signal output terminal of a control module and the shading module being configured to generate a shading voltage signal according to a clock control signal inputted to its control module; and a scanning module, a control terminal of the scanning module being electrically connected to the control signal output terminal of the control module and an input terminal of the scanning module being electrically connected to an output terminal of the shading module. The scanning module is configured to output a scanning signal with shading according to the clock control signal and the shading voltage signal.
    Type: Grant
    Filed: July 26, 2017
    Date of Patent: July 16, 2019
    Assignees: HKC Corporation Limited, Chongqing HKC Optoelectronics Technology Co., Ltd.
    Inventor: Yu-jen Chen
  • Patent number: 10347186
    Abstract: A display panel driving unit can include: a timing controller to supply a power on reset signal for starting a sensing operation for pixel compensation during a sensing period before displaying an image; a power management integrated circuit (PMIC) to supply a high level reference voltage reset signal to the timing controller, and generate a control signal; and a control circuit to receive the high level reference voltage reset signal and the PMIC, in response to the high level reference voltage reset signal transitioning from a high to low logic level and then from the low logic level back to the high logic level, shift the power on reset signal to transition from a high to low logic level and then from the low logic level back to high, to follow the high level reference voltage reset signal, and supply the power on reset signal to the timing controller.
    Type: Grant
    Filed: September 25, 2017
    Date of Patent: July 9, 2019
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Juseok Lee, HaeSeung Lee
  • Patent number: 10339882
    Abstract: A fault-tolerant display system includes a TFT panel, a first driver couplet including a first gate driver and a first source driver, and a second driver couplet including a second gate driver and a second source driver. The first gate driver and the second gate driver feed into the LCD panel from opposite directions and the first source driver and the second source driver feed into the LCD panel from opposite directions. The first driver couplet and the second driver couplet each have their own independent power supplies, independent from one another. In this way, individual pixels of the LCD panel are driven simultaneously by two pairs of source drivers and gate drivers, such that if one of the driver pairs fails due to some fault, the other driver pair can continue to drive the LCD panel without loss of information despite the failure of the one driver pair.
    Type: Grant
    Filed: December 9, 2015
    Date of Patent: July 2, 2019
    Assignee: L-3 COMMUNICATIONS CORPORATION
    Inventors: Mark Fletcher, Carlos Galleno
  • Patent number: 10332466
    Abstract: A method of driving a display panel includes providing a positive polarity data signal to a first data line during an odd-numbered frame, and providing a negative polarity data signal to the first data line during an even-numbered frame. The positive polarity data signal has a first polarity. The negative polarity data signal has a second polarity. Output timing of the positive polarity data signal is different from output timing of the negative polarity data signal.
    Type: Grant
    Filed: April 21, 2016
    Date of Patent: June 25, 2019
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Se-Hyoung Cho, Hyun Joon Kim, Cheol-Gon Lee, Jangmi Kang, Mee-Hye Jung, Jong-Hee Kim
  • Patent number: 10311813
    Abstract: Electric power that a display device consumes in reversal of polarity is reduced. A display control section (3) includes: a refresh rate detecting section (31) which detects a refresh rate of a display device (100 or 200); and a polarity reversal control section (32 or 33) which controls reversal of polarity so as to be carried out at a frequency lower than the refresh rate.
    Type: Grant
    Filed: May 30, 2016
    Date of Patent: June 4, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventor: Yuichi Sato
  • Patent number: 10291224
    Abstract: Embodiments of this disclosure provide a gate driving circuit, a driving method thereof, a display panel and a display device. The gate driving circuit comprises: a corner cutting circuit and a scanning circuit. The corner cutting circuit is configured to output a corner cut voltage signal, wherein the corner cut voltage signal comprises a pulse whose edge is smoothed. The scanning circuit is configured to output a corner cut scanning signal based on the corner cut voltage signal, wherein the corner cut scanning signal comprises a pulse whose edge is smoothed.
    Type: Grant
    Filed: June 7, 2017
    Date of Patent: May 14, 2019
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Fei Yang, Zhongyuan Wu, Yue Wu
  • Patent number: 10283031
    Abstract: An electronic device may generate content that is to be displayed on a display. The display may have an array of pixels each of which includes subpixels of different colors. The content that is to be displayed on the display may include an object such as a black object that is moved across a background. Due to differences in subpixel values in the background for subpixels of different colors, there is a potential for color motion blur to develop along a trailing edge portion of the object as the object is moved across the background. The electronic device may have a blur abatement image processor that processes the content to reduce color motion blur. The blur abatement image processor may identify which pixels are located in the trailing edge and may adjust subpixel values for pixels in the trailing edge.
    Type: Grant
    Filed: September 9, 2015
    Date of Patent: May 7, 2019
    Assignee: Apple Inc.
    Inventors: Adria Fores Herranz, Cheng Chen, Jiaying Wu, Nicholas G. Roland
  • Patent number: 10267965
    Abstract: A microscope includes: a stage on which a specimen is placed; an illumination optical system that includes a monochromatic light LED chip and a phosphor filter, which is arranged to be insertable and removable on and from an illumination optical path and is excited by light having a specific wavelength band irradiated from the monochromatic light LED chip to emit fluorescence having a longer wavelength relative to the light, the illumination optical system being configured to irradiate the specimen with illumination light; and an observation optical system that includes an absorption filter which is insertable and removable on and from an observation optical path and selectively takes fluorescence having a predetermined wavelength from the fluorescence emitted from the specimen.
    Type: Grant
    Filed: August 8, 2017
    Date of Patent: April 23, 2019
    Assignee: OLYMPUS CORPORATION
    Inventor: Yoshitsugu Yamazawa
  • Patent number: 10255870
    Abstract: The display driving circuit according to an embodiment of the present disclosure includes a characteristic collector, a comparator, a timing controller and a gate driver.
    Type: Grant
    Filed: July 18, 2017
    Date of Patent: April 9, 2019
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE DISPLAY TECHNOLOGY CO., LTD.
    Inventor: Zheng Wang
  • Patent number: 10245954
    Abstract: A vehicle display device includes an image display device and a frame member. The image display device is disposed in front of a driver in a vehicle and displays an image. The frame member is disposed on a driver side of the image display device and surrounds a part of an image display region in the image display device. When displaying a new image in a surrounding of the frame member, the image display device displays the new image from an edge of the frame member in a slide-in manner.
    Type: Grant
    Filed: January 16, 2018
    Date of Patent: April 2, 2019
    Assignee: YAZAKI CORPORATION
    Inventors: Kazumasa Shoji, Ryoko Sone, Masayuki Ichikawa
  • Patent number: 10176778
    Abstract: A k-th driving stage includes a first pull-down transistor. The first pull-down transistor includes a first control electrode receiving a second control signal activated after the k-th gate signal is output, a second control electrode receiving the switching signal synchronized with a clock signal, an input electrode receiving a first discharge voltage, and an output electrode connected to the output electrode of the first output transistor.
    Type: Grant
    Filed: September 9, 2016
    Date of Patent: January 8, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventor: Keunwoo Kim
  • Patent number: 10170064
    Abstract: The invention provides a circuit for processing a gate voltage signal supplied for a liquid crystal display device. The circuit includes an input-output circuit and a control circuit. The input-output circuit receives the gate voltage signal. The control circuit receives a control signal and is subjected to the control of the control signal to make the input-output circuit to output first through fourth output signals in first through fourth time segments respectively during each period based on the gate voltage signal. In the circuit for processing a gate voltage signal supplied for a liquid crystal display device according to any one exemplary embodiment of the invention, the gate voltage signal can be changed to be different values in different time segments of each period so as to decrease voltage dropping speed of the gate voltage signal, impact on a reference voltage of the liquid crystal display device is reduced.
    Type: Grant
    Filed: July 12, 2016
    Date of Patent: January 1, 2019
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd
    Inventor: Xiaoyu Huang
  • Patent number: 10147372
    Abstract: The present disclosure relates to a driving circuit and a driving method of liquid crystal panels. The driving circuit includes a timing control chip receiving video signals and analyzing frame turn-on signals and column data voltage signals corresponding to a needed grayscale, calculating a pre-charge time period needed for the subpixels to be displayed in a real-time manner and obtaining pre-charge control signals in accordance with the pre-charge time period. The driving circuit also includes a scanning driving circuit receiving the frame turn-on signals and generating the row-scanning-driving voltage signals, overlapping the pre-charge control signals and the row-scanning-driving voltage signals to obtain the row-scanning-driving signals, and transforming the row-scanning-driving signals into row-scanning-driving voltage, then transmitting the row-scanning-driving voltage to a corresponding scanning line.
    Type: Grant
    Filed: June 5, 2015
    Date of Patent: December 4, 2018
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd
    Inventors: Jingjing Wu, Zhi Xiong