Specific Display Element Control Means (e.g., Latches, Memories, Logic) Patents (Class 345/98)
  • Patent number: 10340297
    Abstract: Deterioration of image quality in a display device due to kickback voltages may be reduced or prevented by varying parasite capacitance, the size of the semiconductor layer, and/or storage capacitance in each of thin film transistors for the pixels in the display. Various embodiments of display devices capable of reducing or preventing kickback voltages are disclosed.
    Type: Grant
    Filed: April 11, 2017
    Date of Patent: July 2, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Kwihyun Kim, Yoon-jang Kim, Sungryul Kim, Yunseok Lee
  • Patent number: 10325355
    Abstract: An image processing unit performs gamma correction on a video signal using a gamma characteristic selected from among a plurality of gamma characteristics. Further, in a case where a gamma characteristic used in the gamma correction is changed by selection of the gamma characteristic, the image processing unit calculates a contour correction characteristic corresponding to the changed gamma characteristic and performs contour correction using the contour correction characteristic on the video signal.
    Type: Grant
    Filed: November 2, 2016
    Date of Patent: June 18, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventor: Tadayoshi Ono
  • Patent number: 10319743
    Abstract: A novel semiconductor device or display device is provided. A semiconductor substrate is used as a substrate of a display portion and a transistor in the display portion is formed using the semiconductor substrate. In this way, variation in the characteristics of the transistors among pixels is reduced and pixel density can be increased. Moreover, transistors used for a driver circuit, a signal generation circuit, and a level shifter are formed using the semiconductor substrate. As a result, these circuits can be formed directly on the substrate of the display portion, whereby bonding of a chip and the substrate is unnecessary. Furthermore, these circuits can be easily connected to each other, so that signal delay or an increase in power consumption due to complicated wirings can be prevented.
    Type: Grant
    Filed: December 11, 2017
    Date of Patent: June 11, 2019
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Yoshiyuki Kurokawa
  • Patent number: 10311822
    Abstract: Systems and methods are provided for improving displayed image quality of an electronic display with reduced power consumption. In some embodiments, a display pixel in the electronic display includes a pixel electrode and a common electrode. A pixel electrode driver electrically coupled to the first display pixel writes the display pixel by supplying a pixel voltage signal to the pixel electrode. A common electrode driver electrically coupled to the common electrode includes a power amplifier that supplies a common voltage signal to the common electrode to predictively offset net charge accumulation expected in the common electrode; a first power supply rail selectively connectable to the power amplifier based on a target voltage of the common voltage signal; and a second power supply rail selectively connectable to the power amplifier based on the target voltage, in which the first and second power supply rails supply different voltages when connected.
    Type: Grant
    Filed: August 2, 2017
    Date of Patent: June 4, 2019
    Assignee: APPLE INC.
    Inventors: Fenghua Zheng, Howard H. Tang, Sandro H. Pintz
  • Patent number: 10311781
    Abstract: A stage includes an output, an input, signal processors, and a stabilizer. The output supplies a voltage of a first or second power source to an output terminal based on voltages of first and second nodes. The input controls voltages of third and fourth nodes based on signals to a first and second input terminals. A first signal processor controls the voltage of the first node based on the voltage of the second node. A second signal processor is connected to a fifth node and controls the voltage of the first node based on a signal to a third input terminal. A third signal processor controls the voltage of the fourth node based on the voltage of the third node and the signal to the third input terminal. The stabilizer is connected between the second signal processor and input to control voltage drop widths of the third and fourth nodes.
    Type: Grant
    Filed: May 3, 2017
    Date of Patent: June 4, 2019
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Seung Kyu Lee, Seung Ji Cha, Ji Hyun Ka, Tae Hoon Kwon, Min Ku Lee, Jin Tae Jeong
  • Patent number: 10304376
    Abstract: An apparatus includes an active region, gate lines, source lines, a gate driver, and a source driver. The active region includes a plurality of subpixels. The subpixels correspond to an array of pixels arranged in M rows and N columns. The number of the subpixels is k times of the number of the pixels. The apparatus includes xM gate lines and (k/x)N source lines, where x is a fraction between 1 and 2, and each of xM and (k/x)N is a positive integer. The gate driver is operatively coupled to the active region via the xM gate lines and configured to scan the plurality of subpixels. The source driver is operatively coupled to the active region via the (k/x)N source lines and configured to write display data in a frame to the plurality of subpixels.
    Type: Grant
    Filed: April 24, 2017
    Date of Patent: May 28, 2019
    Assignee: Beijing Yunyinggu Technology Co., Ltd.
    Inventors: Yu-Hsun Peng, Shih-Wei Tseng, Jing Gu
  • Patent number: 10297615
    Abstract: The present disclosure discloses a display panel, a display device and a driving method thereof.
    Type: Grant
    Filed: July 12, 2017
    Date of Patent: May 21, 2019
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Yu'e Jia
  • Patent number: 10297232
    Abstract: Provided are a display device and a source driver. The source driver may perform a power down mode in response to any one of a vertical blank period, a horizontal blank period, a state in which the load of a panel is maintained at a preset value or less, a state in which a current supplied to the panel is maintained at a preset value or less, or a state in which resolution is maintained at a preset value or less. The source driver can realize the power down mode using various power options, thereby reducing power consumption.
    Type: Grant
    Filed: March 10, 2015
    Date of Patent: May 21, 2019
    Assignee: SILICON WORKS CO., LTD.
    Inventors: Kwang Il Oh, Soo Woo Kim, Myung Yu Kim, Young Bok Kim
  • Patent number: 10290658
    Abstract: Disclosed is a thin film transistor substrate which facilitates to realize a bottom gate structure where a gate electrode is disposed below an active layer, and to increase an area for a storage capacitor, and a display device including the same, wherein the thin film transistor substrate may include a light shielding layer, a buffer layer for covering the light shielding layer, and a driving transistor prepared on the buffer layer while being overlapped with the light shielding layer, and provided to supply a driving current to an organic light emitting device.
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: May 14, 2019
    Assignee: LG Display Co., Ltd.
    Inventors: HyungJoon Koo, SeHee Park, Kwanghwan Ji, PilSang Yun, Jaeyoon Park, HongRak Choi
  • Patent number: 10290255
    Abstract: A data driver of a microLED display includes clock generators that generate pulse width modulation (PWM) clocks of corresponding primary colors respectively; counters that receive the PWM clocks of corresponding primary colors respectively and accordingly generate corresponding PWM signals; and comparators associated with corresponding data channels respectively for comparing a held data signal with the corresponding PWM signal, thereby generating a comparison result signal. In one embodiment, the data driver further includes switches configured to electrically short output nodes of channel amplifiers of corresponding primary colors respectively for testing uniformity of microLEDs of one color.
    Type: Grant
    Filed: September 19, 2017
    Date of Patent: May 14, 2019
    Assignee: Prilit Optronics, Inc.
    Inventors: Biing-Seng Wu, Fa-Ming Chen
  • Patent number: 10291871
    Abstract: Pixels output a first signal based on signal charge of a part of photoelectric conversion units of multiple photoelectric conversion units, and a second signal based on signal charge of multiple photoelectric conversion units. An imaging apparatus outputs signals based on the first signals and signals based on the second signals by reducing the number of signals based on the first signals as compared to the number of signals based on the second signals.
    Type: Grant
    Filed: November 25, 2015
    Date of Patent: May 14, 2019
    Assignee: CANON KABUSHIKI KAISHA
    Inventors: Seiji Hashimoto, Atsushi Furubayashi, Takeru Suzuki, Kazuhiro Sonoda, Daisuke Yoshida, Hirofumi Totsuka, Takashi Muto, Yasushi Matsuno
  • Patent number: 10290277
    Abstract: The present application provides a reset circuit for a shift register circuit, a shift register circuit, a gate driving circuit, a display apparatus, and a driving method. The reset circuit comprises a first adjustment control circuit having an input terminal configured to receive a ground line signal, and a control terminal configured to receive a first control signal; a second adjustment control circuit having an input terminal configured to receive an adjustment signal via an adjustment signal input terminal, a control terminal configured to receive a second control signal, and an output terminal configured to be coupled to an output terminal of the first adjustment control circuit; and a storage circuit having a first terminal connected to the output terminals of the second adjustment control circuit and the first adjustment control circuit, and a second terminal connected between a reset signal input terminal and a transistor.
    Type: Grant
    Filed: September 29, 2017
    Date of Patent: May 14, 2019
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Yang Zhang, Chengying Cao, Peng Li, Peng Wu
  • Patent number: 10267773
    Abstract: Disclosed is a phasing adder including delay charge transfer units including holding and transferring units which obtain signal charge amounts that are not amplified and which send and receive the signal charge amounts across a predetermined plurality of stages while holding the signal charge amounts for a predetermined time in each stage and a delay adder which performs phasing addition of the signal charges which are held for a predetermined number of stages in the delay charge transfer unit, and electric capacity of each first holding unit, which is the first stage among the plurality of stages in the holding and transferring unit, where the signal charges are obtained and held at a time of ultrasound wave reception is greater than electric capacity of each of later holding units where the signal charges are to be held in a second stage and stages thereafter.
    Type: Grant
    Filed: February 27, 2015
    Date of Patent: April 23, 2019
    Assignee: KONICA MINOLTA, INC
    Inventor: Yuta Nakayama
  • Patent number: 10255872
    Abstract: A source driver circuit includes a receiver, a plurality of amplifying buffers, and a control logic circuit. The receiver receives a data signal and a control signal through an input terminal. Each of the amplifying buffers outputs a driving signal generated based on the image data signal through an output terminal. The control logic circuit controls the receiver and the plurality of amplifying buffers based on the control signal. When a power-down signal is provided to the receiver, the control logic circuit is to turn off at least one of the receiver and the plurality of amplifying buffers.
    Type: Grant
    Filed: March 2, 2018
    Date of Patent: April 9, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Chulho Choi
  • Patent number: 10249252
    Abstract: The present disclosure provides a color cast compensation method, which includes: obtaining a first gray value of a first pixel electrode currently to be charged; determining a second gray value of a second pixel electrode on a previous row sharing a same data line with the first pixel electrode; and obtaining a target charging voltage of the first pixel electrode based on the first gray value and the second gray value. The present invention solves the problem of display quality affected by rough fonts, caused by jaggies appearing on a triple-gate type display panel.
    Type: Grant
    Filed: July 19, 2016
    Date of Patent: April 2, 2019
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.
    Inventors: Xiaoyu Huang, Dongsheng Guo
  • Patent number: 10248236
    Abstract: The present invention provides a display device comprising: a display panel including a data line, a gate line, and a pixel; a data driver configured to output a data signal to the data line; a gate driver configured to output a gate signal to the gate line; and a signal controller configured to control the data driver, and the gate driver, wherein at least one of the data driver and the gate driver comprises a first current monitoring unit configured to monitor output current of the at least one of the data driver and the gate driver.
    Type: Grant
    Filed: September 12, 2016
    Date of Patent: April 2, 2019
    Inventor: Yongman Lee
  • Patent number: 10235933
    Abstract: A display degradation compensation system and method for adjusting the operating conditions for pixels in an OLED display to compensate for non-uniformity or aging of the display. The system or method sets an initial value for at least one of peak luminance and an operating condition, calculates compensation values for the pixels in the display, determines the number of pixels having compensation values larger than a predetermined threshold compensation value, and if the determined number of pixels having compensation values larger than said predetermined threshold value is greater than a predetermined threshold number, adjusts the set value until said determined number of pixels is less than said predetermined threshold number.
    Type: Grant
    Filed: September 18, 2014
    Date of Patent: March 19, 2019
    Assignee: Ignis Innovation Inc.
    Inventors: Arokia Nathan, Gholamreza Chaji, Stefan Alexander, Peyman Servati, Richard I-Heng Huang, Corbin Church
  • Patent number: 10216470
    Abstract: A display screen and a display device are provided. The display device includes: a first display screen; a display screen group arranged on a back surface of the first display screen, the display screen group including at least one second display screen, and a display surface of the second display screen facing the first display screen; and a rotating shaft, the rotating shaft connecting a first side edge of each of the second display screens in the display screen group with a first side edge of the first display screen and being perpendicular to the first display screen and the second display screen. The display device has characteristics of adjustable display screen size and strong flexibility in use.
    Type: Grant
    Filed: April 8, 2016
    Date of Patent: February 26, 2019
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Song Song, Kazuyoshi Nagayama
  • Patent number: 10210800
    Abstract: An apparatus includes an active region, a source driving circuit, and a light emitting driving circuit. The active region includes an array of light emitting elements corresponding to an array of pixels arranged in M rows and N columns. The number of the array of light emitting elements is k times of the number of the array of pixels. The apparatus includes xM light emitting lines and (k/x)N source lines, wherein x is a positive fraction, and each of xM and (k/x)N is a positive integer. The source driving circuit is operatively coupled to the active region via the (k/x)N source lines and configured to write display data of a frame to the array of light emitting elements. The light emitting driving circuit is operatively coupled to the active region via the xM light emitting lines and configured to cause the array of light emitting elements to emit light.
    Type: Grant
    Filed: August 21, 2018
    Date of Patent: February 19, 2019
    Assignee: VIEWTRIX TECHNOLOGY CO., LTD.
    Inventors: Jing Gu, Yu-Hsun Peng, Shih-Wei Tseng
  • Patent number: 10206276
    Abstract: A flexible display and a method of manufacturing the same are disclosed. In one aspect, the flexible display includes a flexible display panel including an active area displaying configured to display an image and an inactive area extending towards the outside of the active area, and a plurality of wires disposed over the flexible display panel in the inactive area and transmitting configured to transmit an electric signal to the active area. A bending hole is disposed at a corner where two adjacent edges of the flexible display panel meet in the inactive area. The bending hole is interposed between the plurality of the wires and the active area. The corner is folded so as to define a folding region.
    Type: Grant
    Filed: January 16, 2018
    Date of Patent: February 12, 2019
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Myunghwan Kim, Myeonghee Kim, Sanggil Lee, Heekeun Lee
  • Patent number: 10204578
    Abstract: There are disclosed a display substrate and a display device. The display substrate comprises a common electrode line, a plurality of pixel units with each comprising a pixel electrode and a plurality of first switch units disposed respectively between the common electrode line and the pixel electrodes. Each of the first switch unit is configured to be turned on within a pre-set time period after the display substrate is powered off to connect the pixel electrode to the common electrode line and be turned off when the display substrate is powered on to disconnect the pixel electrode from the common electrode line. In this way, after the power-off, the charges stored in the pixel electrode are neutralized in the common electrode line. Thus, the pixel electrode and the common electrode can be discharged by the same discharge circuit, which guarantees no DC residue in the discharged pixel electrode.
    Type: Grant
    Filed: November 11, 2016
    Date of Patent: February 12, 2019
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE DISPLAY TECHNOLOGY CO., LTD.
    Inventors: Kan Zhang, Bin Zhang, Dianzheng Dong, Guangxing Wang, Qiang Zhang, Yu He
  • Patent number: 10204576
    Abstract: A liquid crystal display of a three TFT structure includes arrayed pixel units, a data drive chip, a row drive chip, a timing controller, and a discharge module. The discharge module includes control terminals and voltage output terminals. The control terminals of the discharge module are respectively connected to control terminals of the timing controller. The first pixel unit includes three TFTs, a first liquid crystal display unit, and a second liquid crystal display unit. The three TFTs include a main TFT, a sub TFT, and a shared TFT. The voltage output terminal of the discharge module supplies a first discharge voltage when the first pixel unit is in the state of positive polarity driving and supplies a second discharge voltage when the first pixel unit is in the state of negative polarity driving. The first and second discharge voltages are both greater than a voltage of the common electrode.
    Type: Grant
    Filed: August 31, 2017
    Date of Patent: February 12, 2019
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd
    Inventor: Shuai Chen
  • Patent number: 10199000
    Abstract: A source driver IC chip, designed to prevent flicker in images displayed on a display panel while suppressing power consumption and heat generation, includes: a reference gradation voltage generating part (220) configured to generate a reference gradation voltage based on a first or second gamma characteristic of the display panel, using first and second power supply voltages (VH) and (VL) inputted through first and second external terminals (PA2, PA3); and a third external terminal (PA4) for externally outputting said reference gradation voltage. The source driver IC chip further includes first and second gradation voltage generating parts configured to generate first and second gradation voltages respectively, using a reference gradation voltage based on a first gamma characteristic inputted through a fourth external terminal and a reference gradation voltage having a second gamma characteristic inputted through a fifth external terminal respectively.
    Type: Grant
    Filed: December 30, 2016
    Date of Patent: February 5, 2019
    Assignee: LAPIS Semiconductor Co., Ltd.
    Inventors: Kenichi Shiibayashi, Koji Higuchi, Atsushi Hirama
  • Patent number: 10185589
    Abstract: Memory is reserved in a virtualized computing environment for graphics processing of each child partition in the computing environment. A video memory controller can identify video settings for child partitions. The video memory controller can determine an amount of memory for graphics processing for a child partition based on the video settings for that child partition. The video memory can also request an amount of memory to be reserved for that child partition based on the calculated amount of memory. Reserving memory for graphics processing of child partitions in this way allows for a sufficient amount of memory to be reserved for a child partition without wasting memory resources by reserving significantly more memory than is needed for the child partition.
    Type: Grant
    Filed: January 18, 2018
    Date of Patent: January 22, 2019
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Parag Chakraborty, Bradley Post
  • Patent number: 10177844
    Abstract: A measurement method and apparatus for a residual direct-current component and a system where the measurement method for a residual direct-current component includes: selecting a section of data of a first predetermined length from a received signal; performing fast Fourier transform on the selected data to obtain a frequency-domain signal of the data; calculating a power spectrum of the frequency-domain signal of the transformed data; and finding out a maximum peak value of the power spectrum in a frequency offset range, and taking power of the maximum peak value as power of the residual direct-current component. With the embodiments of this disclosure, a residual direct-current component of an optical transmitter may be measured at a receiver end of a coherent optical communication system, thereby avoiding a diagnosis error of a communication network, and improving performance of the communication system.
    Type: Grant
    Filed: July 31, 2017
    Date of Patent: January 8, 2019
    Assignee: FUJITSU LIMITED
    Inventors: Hao Chen, Zhenning Tao
  • Patent number: 10162458
    Abstract: Disclosed are an in-cell touch type touch display device that includes a touch display panel, where a plurality of touch sensors are disposed, and a driving circuit unit. Each of the plurality of touch sensors are disposed to correspond to a plurality of subpixels, and each of the plurality of touch sensors may include one or more touch switches. The one or more touch switches disposed in each of the plurality of touch sensors divisionally drive the plurality of touch sensors by 1/n (where n is a natural number equal to or more than two).
    Type: Grant
    Filed: July 29, 2016
    Date of Patent: December 25, 2018
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Soonho Kwon, HongSung Song, Hui Kim
  • Patent number: 10152911
    Abstract: A power supply circuit includes a comparison circuit, a preset value setting circuit, a reset detecting circuit and a reset signal generating circuit. The comparison circuit compares a first and second voltage to output a comparing result. The first and second voltages correspond to a first and second preset value, respectively. When the comparison result shows that the second voltage is greater than the first voltage, the preset value setting circuit outputs the second preset value; otherwise it outputs a third preset value, which is greater than the first preset value. The reset detecting circuit determines whether the operation voltage of the power supply circuit drops to the preset value outputted by the preset value setting circuit, and outputs a control signal accordingly. The reset signal generating circuit determines whether to output a reset signal for resetting gate lines in a display panel based on the control signal.
    Type: Grant
    Filed: November 15, 2016
    Date of Patent: December 11, 2018
    Assignee: AU OPTRONICS CORPORATION
    Inventors: Wei-Chin Tsai, Chun-Kuei Wen
  • Patent number: 10102793
    Abstract: Discussed are a built-in gate driver capable of improving output characteristics of the gate driver by reducing load of clock lines and a display device using the same. The built-in gate driver can include a shift register, a first clock group and a second clock group located in a non-display region of a display panel. The shift register includes a plurality of stages for individually driving gate lines of a display region. The first clock group includes clock lines arranged at a first side of the shift register. The second clock group includes clock lines arranged at a second side of the shift register. Each of the clock lines includes a main line and a branch line branched from the main line and connected to a corresponding stage. A branch line belonging to a corresponding clock group of any one of the first and second clock groups does not overlap a main line belonging to the other clock group.
    Type: Grant
    Filed: June 17, 2016
    Date of Patent: October 16, 2018
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Yong-Ho Jang, Woo-Seok Choi
  • Patent number: 10089959
    Abstract: A display may have an array of display pixels. Digital display data may be received by a digital-to-analog converter that converts the digital display data to analog display data. The magnitudes of the analog display data signals can be controlled by a regulated voltage received by the digital-to-analog converter. A brightness controller may have multiple peak luminance control (PLC) profiles. In accordance with an embodiment, a brightness setting may be processed by a lookup table to identify a pair of PLC profiles that is interpolated in order to obtain the desired regulated voltage. In accordance with another embodiment, a single PLC profile may be used that is a function of a combined parameter that takes into account both average frame luminance and the brightness setting. In accordance with yet another embodiment, a lookup table that specifies brightness setting offset values may be used to directly modulate the brightness setting.
    Type: Grant
    Filed: September 29, 2015
    Date of Patent: October 2, 2018
    Assignee: Apple Inc.
    Inventors: Mohammad Ali Jangda, Koorosh Aflatooni, Yafei Bi
  • Patent number: 10083644
    Abstract: A display panel control system and a display device are disclosed. The control system includes a system chip is configured for receiving video signals and for analyzing the video signals to obtain driving signals and timing signals, and a driving control board is configured for receiving the driving signals and the timing signals, and for controlling a display panel to display in accordance with the driving signals and the timing signals. The control system integrates the function of obtaining the driving signals and the timing signals on the system chip so as to simplify the structure of the display panel control system and to reduce the manufacturing cost.
    Type: Grant
    Filed: December 25, 2015
    Date of Patent: September 25, 2018
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd
    Inventors: Yu Wu, Lei Sun
  • Patent number: 10078394
    Abstract: A liquid crystal display device includes: a display unit configured to pixels in a display region, a pixel drive circuit configured to apply voltage to liquid crystals, a memory configured to store therein a setting signal indicating whether to apply voltage to the liquid crystals in the display region, and two switch elements for switching coupling with the pixel drive circuit; and a controller configured to rewrite the setting signal stored in the memory when a mode in which the display unit is operated is switched, between a first mode causing the display unit to perform display output in accordance with a gradation signal generated based on image data, and a second mode causing the display unit to perform display output in accordance with the setting signal stored in the memory.
    Type: Grant
    Filed: October 20, 2016
    Date of Patent: September 18, 2018
    Assignee: Japan Display Inc.
    Inventor: Daijiro Takano
  • Patent number: 10074316
    Abstract: The invention provides an OLED display and a source driver. The output channels of source driver are divided into odd-numbered (ODD) and even-numbered (EVEN) output channels. With the odd-even channel selection module (33) in source driver to control the logic circuit and driver module (31) to select only odd-numbered (ODD), only even-numbered (EVEN) output channels or both for output based on strobe enabling signal (EN) and odd-even selection signal (SEL). Moreover, through rapid switching between high and low of the odd-even selection signal (SEL), the switching of outputting to only odd-numbered (ODD) and only even-numbered (EVEN) output channels is achieved so that odd-numbered pixel units and even-numbered pixel units in OLED display emit light alternatingly. Without changing pixel structure and reducing opening ration, while ensuring normal display, the invention shortens the light-emitting time of OLED inside each pixel to delay OLED display ageing.
    Type: Grant
    Filed: January 29, 2016
    Date of Patent: September 11, 2018
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Jianhang Fu, Taijiun Hwang
  • Patent number: 10074336
    Abstract: The voltage transmission circuit includes: a multiplexer for transmitting positive and negative voltages ranging +VDD to ?VDD selectively; and a demultiplexer for receiving the positive and negative voltages and output them at positive and negative outputs. The voltage transmission circuit is arranged by use of elements each having a withstand voltage of which the absolute value is not 2|VDD|, but |VDD|. While transmitting positive voltages, the multiplexer is configured not to be applied by negative voltages, the multiplexer and demultiplexer are controlled by signals each having a potential of 0 V to +VDD, and the demultiplexer outputs the positive voltages at the positive output. While transmitting negative voltages, the multiplexer is configured not to be applied by positive voltages, the multiplexer and the demultiplexer are controlled by signals each having a potential of ?VDD to 0 V, and the demultiplexer outputs the negative voltages at the negative output.
    Type: Grant
    Filed: June 23, 2015
    Date of Patent: September 11, 2018
    Assignee: Synaptics Japan GK
    Inventors: Masashi Takata, Shigeki Ueda, Norihiro Enomoto
  • Patent number: 10051158
    Abstract: Provided is a control apparatus for an image pickup apparatus that can synchronize an image sensor with a frame period from an external device, such as a display apparatus, without use of any frame buffer, while optimizing the frequency of a clock signal used for the operation of the image sensor. An image sensor (11) receives a trigger signal from an external device (2), such as a display apparatus, and image data from an image sensor (11); calculates, for each frame, information of a time difference from the trigger signal to a time at which to start the output of the image data; and establishes, on the basis of the information of the time difference, a frame period of the image sensor (11) such that the time difference is accommodated within a given range, thereby allowing the image data to be supplied to the external device (2) within a given time difference relative to the trigger signal, though some degree of variation occurring in each frame.
    Type: Grant
    Filed: March 2, 2015
    Date of Patent: August 14, 2018
    Assignee: Shimadzu Corporation
    Inventor: Kenji Kimura
  • Patent number: 10043467
    Abstract: The control circuit includes a PCB and a timing control board having a first connection terminal, a switch, and an operation circuit. The first connection terminal is connected to a control terminal of the switch turning on and off the switch. An input terminal of the switch has a first voltage and an output terminal is connected to the operation circuit. The PCB includes sequentially positioned second, third, and fourth connection terminals. The third connection terminal has a voltage different from those on the second and fourth terminals. When the first connection terminal is connected to the third connection terminal, the switch is turned on, the output terminal has the first voltage, and the operation circuit is powered to function. When the first connection terminal is connected to the other connection terminals, the switch is turned off, the output terminal has zero voltage, and the operation circuit stops to function.
    Type: Grant
    Filed: June 21, 2016
    Date of Patent: August 7, 2018
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd
    Inventor: Xiaoyu Huang
  • Patent number: 10019927
    Abstract: A display device and a driving method thereof can reduce or prevent deterioration of image quality caused by ripples of a power voltage. A display device includes a gamma reference voltage generator generating a plurality of gamma reference voltages using a power voltage. A gamma selection signal generator generates a gamma selection signal corresponding to at least one gamma reference voltage among the gamma reference voltages and the power voltage. A gamma data supply unit stores a plurality of gamma data sets and outputs a gamma data set corresponding to the gamma selection signal from among the gamma data sets. A data driver generates a data signal using the gamma data set supplied from the gamma data supply unit and the gamma reference voltages. A display unit includes data lines transmitting the data signal.
    Type: Grant
    Filed: January 19, 2016
    Date of Patent: July 10, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jeong Doo Lee, Min Young Park, Ki Hyun Pyun
  • Patent number: 10013932
    Abstract: A liquid crystal display device in which pixels having a memory function are arranged includes: a display drive unit performing display driving by a driving method for obtaining halftone gray scales by setting plural frames as one cycle and temporarily changing gray scales of respective pixels within one cycle; and a pixel drive unit supplying a voltage having the same phase as, or the reverse phase to, a common voltage the polarity of which is inverted in a given cycle and applied to counter electrodes of liquid crystal capacitors to pixel electrodes of the liquid crystal capacitors. The pixel drive unit supplies an intermediate voltage between high- and low-voltage sides of the common voltage to the pixel electrodes of the liquid crystal capacitors at the time of transition from the supply of the voltage having the same phase to the supply of the voltage having reverse phase.
    Type: Grant
    Filed: January 11, 2017
    Date of Patent: July 3, 2018
    Assignee: Japan Display Inc.
    Inventor: Yasuyuki Teranishi
  • Patent number: 10013945
    Abstract: Among data voltages applied to a plurality of pixels on a display panel, a first data voltage is shifted from a first original data voltage by a first value, a second data voltage is shifted from a second original data voltage by a second value, and a third data voltage is shifted from a third original data voltage by a third value to compensate for AC and DC afterimages. A common voltage generator provides an optimal common voltage for the third data voltage when the temperature of the liquid crystal panel assembly is lower than a reference temperature and provides an optimal common voltage for the first data voltage or the second data voltage when the temperature of the liquid crystal panel assembly is higher than or equal to the reference temperature. The first, second, and third values correspond to respective kickback voltages of the respective gray level data voltages.
    Type: Grant
    Filed: January 10, 2017
    Date of Patent: July 3, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jin-Soo Jung, Suk Hoon Kang, Jong Hwan Jeon, In Ok Kim, Jun Woo Lee, Baek Kyun Jeon
  • Patent number: 10014863
    Abstract: An integrated circuit device boosts an output voltage which is to be boosted based on the reference power supply voltage, based on another power supply voltage before the reference power supply voltage is supplied.
    Type: Grant
    Filed: September 10, 2015
    Date of Patent: July 3, 2018
    Assignee: Synaptics Japan GK
    Inventors: Yutaka Saeki, Kenichi Kaneshige
  • Patent number: 10002563
    Abstract: An electro-optical device includes a first storage capacitor that has a first electrode and a second electrode, and a second storage capacitor that has a third electrode and a fourth electrode, and a first pixel circuit. The first pixel circuit includes a first transistor having a first gate, a first drain, and a first source, an electro-optical element, a second transistor through which a first data line is electrically connected to the first gate during the second transistor is in an on-state, and a third transistor through which the first gate is electrically connected to the first drain or the first source. The second electrode and the third electrode are electrically connected to the first data line.
    Type: Grant
    Filed: July 24, 2017
    Date of Patent: June 19, 2018
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Hitoshi Ota, Hideto Ishiguro
  • Patent number: 9997585
    Abstract: A pixel circuit includes a driving transistor, a switching transistor, and a light emitting element, and the light emitting elements are formed on a semiconductor substrate. A first substrate potential is supplied to the switching transistor, and a second substrate potential, different from the first substrate potential, is supplied to the driving transistor.
    Type: Grant
    Filed: March 30, 2016
    Date of Patent: June 12, 2018
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Toshiyuki Kasai
  • Patent number: 9990884
    Abstract: A pixel selection control method, driving circuit, display apparatus and electronic instrument are disclosed. A driving circuit includes a logic circuit configured to receive a reference signal associated with a line of pixels. The reference signal has a first logic level or a second logic level. The driving circuit also includes a switch circuit configured to receive the reference signal and an enable signal, and to provide the enable signal to the logic circuit when the reference signal is at the first logic level. A display apparatus may be provided that includes the driving circuit.
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: June 5, 2018
    Assignee: Sony Corporation
    Inventors: Masatsugu Tomida, Keisuke Omoto
  • Patent number: 9984619
    Abstract: A display device according to an embodiment includes a display panel, a driver, a power supply unit, and a power control unit. The power control unit may control the power supply unit in synchronization with a driving period of a device driving the display panel, and control one or more of synchronization signals of a scan driver, a data driver, and a timing controller and a switching frequency of a power generation transistor of the power supply unit to be synchronized.
    Type: Grant
    Filed: December 21, 2015
    Date of Patent: May 29, 2018
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Jungjae Kim, Jaewon Han
  • Patent number: 9983422
    Abstract: An LCD panel includes a first substrate, a second substrate, and a liquid crystal layer. The first substrate is provided with a first electrode thereon. The first electrode is provided with a plurality of stripe-like control electrodes for controlling a viewing angle of the LCD panel. The second substrate is provided with a second electrode and a third electrode thereon. The second electrode is a common electrode for inputting a common voltage to the LCD panel. The third electrode is a pixel electrode formed in each pixel of the LCD panel. When no bias voltage is applied to the stripe-like control electrodes of the first electrode, the LCD panel is displayed with a wide viewing angle; and when a bias voltage is applied to the stripe-like control electrodes of the first electrode, the LCD panel is displayed with a narrow viewing angle.
    Type: Grant
    Filed: May 19, 2016
    Date of Patent: May 29, 2018
    Assignee: INFOVISION OPTOELECTRONICS (KUNSHAN) CO., LTD.
    Inventors: Te-Chen Chung, Zifang Su, Mengqing Zhu
  • Patent number: 9977292
    Abstract: A display apparatus includes a first substrate including a display area and a non-display area, a gate driver positioned in the non-display area of the first substrate and including a plurality of stages cascaded, and at least one spacer disposed on the gate driver, where each of the plurality of stages includes a transistor including a first electrode connected to a clock terminal to which a clock signal is input, a second electrode connected to an output terminal which outputs a gate signal, and a gate electrode, and a capacitor including a first capacitor electrode connected to the gate electrode of the transistor and a second capacitor electrode connected to the output terminal, and the at least one spacer is disposed on the capacitor.
    Type: Grant
    Filed: December 17, 2015
    Date of Patent: May 22, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Youngmin Jung, Hongjoon Moon, Jungyul Lee, Jaehyoung Yoon
  • Patent number: 9979363
    Abstract: A source driver includes a buffer device including a plurality of buffers corresponding to a plurality of data lines, each of the plurality of buffers respectively including an amplifier configured to amplify an input signal and an output driver configured to output a driving signal to a corresponding data line among the plurality of data lines; and a switch device including a charge sharing switch configured to electrically connect the plurality of data lines to one another during a charge sharing operation, each of the amplifiers including a first current mirror having a reference current path including a first node and an output current path including a second node, and the first node of the reference current path and the second node of the output current path are electrically connected to each other during the charge sharing operation.
    Type: Grant
    Filed: June 2, 2016
    Date of Patent: May 22, 2018
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Ju-Hyun Ko, Yong-joo Song, Jun-ho Song, Jin-chul Choi, Beop-hee Kim
  • Patent number: 9972272
    Abstract: The invention discloses an array substrate and a driving method thereof, and a display device, and the array substrate includes: a common voltage generation unit, a timing control unit, a data voltage generation unit, a switch control unit and pixel units, wherein the switch control unit is connected to the common voltage generation unit, the timing control unit, the data voltage generation unit, the common voltage line and the data line, and the switch control unit is used to load a common voltage signal on the common voltage line and load a data voltage signal on the data line when a current frame of image is displayed, and load the common voltage signal on the data line and load the data voltage signal on the common voltage line when a next frame of image is displayed.
    Type: Grant
    Filed: November 13, 2014
    Date of Patent: May 15, 2018
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Zihe Zhang, Bin Ji, Xiuzhu Tang
  • Patent number: 9966021
    Abstract: A display apparatus includes a display panel, a timing controller and a data driver. The display panel includes a data line and first and second pixels connected to the data line. The timing controller generates a data signal and a data kickback control signal in response to input image data. The data driver generates first and second data voltages in response to the data signal, generates a data kickback signal in response to the data kickback control signal, processes the data voltages and the data kickback signal, and outputs the first data voltage to the data line during a first duration, the second data voltage to the data line during a second duration, and a first kickback data voltage to the data line during a first data kickback duration. The first data kickback duration is between the first and second durations.
    Type: Grant
    Filed: June 10, 2016
    Date of Patent: May 8, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Woonyong Kim, Kyeongseok Lee, Jaehyun Koh, Sung-Jun Kim, Jeong-Hyun Kim, Sungsoo Choi
  • Patent number: 9966000
    Abstract: A display system includes an array of light emitting diodes (LEDs), first and second driver chips, and one or more protection chips on a display substrate. The first and second driver chips are to drive a first group of LEDs of the array of LEDs and a second group of LEDs of the array of LEDs, respectively. Each protection chip includes one or more electro-static discharge (ESD) protection devices to assist with protecting the driver chips from damage caused by an ESD event. In one embodiment, each ESD protection device is connected between one or more signal lines, one or more power supply voltage lines, and an electrical ground line of the display substrate. In one embodiment, at least one protection chip comprises one or more electric overstress (EOS) protection devices to assist with protecting the driver chips from damage caused by an EOS event.
    Type: Grant
    Filed: September 24, 2015
    Date of Patent: May 8, 2018
    Assignee: APPLE INC.
    Inventors: Xiaofeng Fan, Andreas Bibl, Kapil V. Sakariya, Tore Nauta
  • Patent number: 9958743
    Abstract: The present invention provides a liquid crystal display panel, comprising: a control terminal of the first main thin film transistor on the nth row of the pixels connected to a branch of the scanning lines to which the nth row of the pixels correspond; the control terminal of the second main thin film transistor on the nth row of the pixels connected to a first branch of the scanning line of the (n+1)th row; the control terminal of the auxiliary thin film transistor on the (n+1)th row of pixels connected to a branch of the scanning lines of the (n+1)th row.
    Type: Grant
    Filed: August 20, 2015
    Date of Patent: May 1, 2018
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Peng Du