Particular Timing Circuit Patents (Class 345/99)
  • Patent number: 10360836
    Abstract: A driving device for a display panel, a display device and a driving method of a display panel are provided. The driving device for a display panel includes numerous sub-pixels. Each of the sub-pixels includes a first display region, a second display region, a first scanning line and a second scanning line. The first scanning line and the first display regions are connected. The second scanning line and the second display regions are connected. The driving device for a display panel further includes a gate driving unit. The gate driving unit is connected to the first scanning line and the second scanning line. The gate driving unit respectively controls charging times of the first display region and the second display region by the first scanning line and the second scanning line.
    Type: Grant
    Filed: December 21, 2017
    Date of Patent: July 23, 2019
    Assignees: HKC CORPORATION LIMITED, CHONGQING HKC OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Yu-Jen Chen
  • Patent number: 10311777
    Abstract: Disclosed are a control system and method for data transmission, and a chip array and a display. The control system for data transmission comprises: a chip array, comprising a plurality of rows of chip assemblies, wherein any row of chip assembly includes at least two chip sets, all chips in each chip set are cascaded with each other; and a controller, configured to receive display data, and generate, according to the display data, a plurality of sets of display signals corresponding to the plurality of rows of chip assemblies, wherein any set of display signal is divided into at least two sub-display signals corresponding to the at least two chip sets, any sub-display signal accesses to a signal input end of a first chip in a corresponding chip set. The control system and method for data transmission, and a chip array and a display solve the technical problem in the related art that electromagnetic radiation increases when a data transmission range is enlarged.
    Type: Grant
    Filed: February 26, 2016
    Date of Patent: June 4, 2019
    Assignee: LEYARD OPTOELECTRONIC CO., LTD.
    Inventors: Dong'an Huang, Changjun Lu, Shuo Zhang
  • Patent number: 10257483
    Abstract: In various embodiments, a color gamut mapper includes a gamut map selection generator configured to analyze color space signals and generate a gamut map selection signal in response thereto. A color gamut transformer is configured to process the color space signals via a selected one of a plurality of gamut maps to generate gamut mapped color space signals, wherein the selected one of the plurality of gamut maps is selected in response to the gamut map selection signal. Other embodiments are disclosed.
    Type: Grant
    Filed: December 29, 2017
    Date of Patent: April 9, 2019
    Assignee: VIXS SYSTEMS, INC.
    Inventors: Ying Liu, Xinghai Li, Jie Feng
  • Patent number: 10248238
    Abstract: To enable size reduction of a display device having a touch sensor function in which a display area has a non-rectangular shape. In a display area, video lines and common electrodes extend in the first direction, and scan lines extend in the second direction. A video signal transmission circuit and a common driver are arranged along a first edge of the display area, with which the one ends of the video lines are aligned. A scan line driver is arranged along a second edge of the display area, with which the ends of the scan lines and the common electrodes are aligned. The display area has a shape including an overlapping part between the first edge and the second edge. In a frame area adjacent to the overlapping part, the scan line driver is arranged more outward than the video signal transmission circuit and switch circuits.
    Type: Grant
    Filed: January 31, 2017
    Date of Patent: April 2, 2019
    Assignee: Japan Display Inc.
    Inventors: Hiroyuki Abe, Takayuki Suzuki
  • Patent number: 10176738
    Abstract: A method for characterizing and eliminating the effect of propagation delay on data and monitor lines of AMOLED panels is introduced. A similar technique may be utilized to cancel the effect of incomplete settling of select lines that control the write and read switches of pixels on a row.
    Type: Grant
    Filed: March 6, 2018
    Date of Patent: January 8, 2019
    Assignee: Ignis Innovation Inc.
    Inventors: Gholamreza Chaji, Yaser Azizi
  • Patent number: 10170066
    Abstract: The present disclosure discloses a driving method and a driving system for gate scanning line and a TFT-LCD display panel, the method includes: driving the gate scanning lines line by line through the CKV waveform of variable frequency of gate driver; from the first gate scanning line to the middle line of the gate scanning line, the opening time is gradually increased; from the middle line of the gate scanning line to the N-th line of the scanning line, the opening time is gradually decreased. the scanning method using unequal time of each line of gate scanning line of each line of the present disclosure, the charging time of the middle line is the longest, the charging time is gradually decreased from the middle line to both sides, increasing the charging time of the TFT-LCD of the middle region in the display panel and optimizing the overall quality performance.
    Type: Grant
    Filed: July 5, 2016
    Date of Patent: January 1, 2019
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd
    Inventor: Zhao Wang
  • Patent number: 10147387
    Abstract: A method of driving a display panel includes, a data driver outputting a precharge voltage to a plurality of pixels of the display panel during a first duration of a horizontal period, the data driver outputting a grayscale voltage to the pixels of the display panel during a second duration of the horizontal period and the data driver initializing the precharge voltage during the second duration of the horizontal period.
    Type: Grant
    Filed: March 10, 2017
    Date of Patent: December 4, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Sun-Koo Kang, Taegon Kim, Seungnam Park, Ok-Kwon Shin
  • Patent number: 10127877
    Abstract: There is provided a display device including a display panel including a gate line operated by a gate signal, a clock source configured to apply a clock signal, a shift register including a stage, the stage including at least one switching element and being configured to generate the gate signal based on the clock signal applied from the clock source, and a control-voltage generator configured to generate a control voltage based on a current generated from at least one of the shift register and the clock source and to apply the control voltage to the at least one switching element.
    Type: Grant
    Filed: July 11, 2016
    Date of Patent: November 13, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Junhyun Park, Sunghwan Kim, Seyoung Song, Kyoungju Shin
  • Patent number: 10120475
    Abstract: To enable size reduction of a display device having a touch sensor function in which a display area has a non-rectangular shape. In a display area, video lines extend in the first direction, and scan lines and common electrodes extend in the second direction. A video signal transmission circuit is arranged along a first edge of the display area, with which the one ends of the video lines are aligned. A scan line driver is arranged along a second edge of the display area, with which the ends of the scan lines and the common electrodes are aligned. The display area has a shape including an overlapping part between the first edge and the second edge. In a part of the frame area adjacent to the overlapping part, the scan line driver is arranged more outward than the video signal transmission circuit.
    Type: Grant
    Filed: February 1, 2017
    Date of Patent: November 6, 2018
    Assignee: Japan Display Inc.
    Inventors: Hiroyuki Abe, Takayuki Suzuki
  • Patent number: 10115353
    Abstract: The present invention provides a liquid crystal display device, comprising a backlight part, and the liquid crystal display device includes an image collection circuit, a gray scale judgment circuit, a PWM signal generation circuit and a LED driving circuit, and the backlight part is electrically coupled to the LED driving circuit; the image collection circuit obtains a gray scale of a target image and transmits the gray scale of the target image to the gray scale judgment circuit, and the gray scale judgment circuit compares the gray scale of the target image with a preset gray scale threshold to generate a control signal to be transmitted to the PWM signal generation circuit; the PWM signal generation circuit generates a PWM signal of which a duty ratio is zero to be transmitted to the LED driving circuit, and the LED driving circuit cuts off an input current of the backlight part.
    Type: Grant
    Filed: January 14, 2016
    Date of Patent: October 30, 2018
    Assignee: Wuhan China Star Optoelectronics Technology Co., Ltd
    Inventors: Zhenzhou Xing, Qingcheng Zuo, Xingling Guo
  • Patent number: 10089918
    Abstract: Disclosed is a display device capable of assigning unique information to a plurality of source drivers and easily controlling an operation sequence and operation time. The display device may include: a timing controller configured to generate an input signal having a clock signal embedded between data signals each including a pixel data packet and a control data packet, and provide the input signal to a source driver; and a source driver configured to receive the input signal, sense pixel information of a display panel, and enabled to transmit the pixel information to the timing controller in response to preset information contained in the control data packet, and configured to transmit the pixel information to the timing controller during an operation time corresponding to operation time information contained in the control data packet.
    Type: Grant
    Filed: August 18, 2016
    Date of Patent: October 2, 2018
    Assignee: SILICON WORKS CO., LTD.
    Inventors: Yong Jung Kwon, Jeong Bae Yun, Jeung Hie Choi
  • Patent number: 10048315
    Abstract: A first clock signal and second clock signal are generated by first and second clock circuits, respectively. A multiplexer selects between the first clock signal and second clock signal to produce a scan clock signal. A non-scan flip flop clocks a data input through to a data output in response to the second clock signal. A scan chain includes a scan flip flop configured to capture the data output from the non-scan flip flop in response to the scan clock signal. The logic state of the captured data in the scan flip flop of the scan chain is indicative of whether the second clock circuit has a stuck-at fault condition (for example, with respect to any one or more included buffer circuits).
    Type: Grant
    Filed: July 6, 2016
    Date of Patent: August 14, 2018
    Assignee: STMicroelectronics International N.V.
    Inventor: Venkata Narayanan Srinivasan
  • Patent number: 9898948
    Abstract: A display device includes a display panel, a scan driver, a first data driver, a second data driver, and a timing controller. The display panel includes a plurality of pixels. The scan driver supplies scan signals to the pixels. The first data driver is connected to first ends of data lines and supplies data voltages to the pixels through the data lines during an active period of the scan signals. The second data driver is connected to second ends of the data lines and supplies the data voltages to the pixels through the data lines during the active period of the scan signals. The timing controller controls the scan driver and the first and second data drivers. The first and second data drivers swap at least two of the data voltages based on a swap control signal.
    Type: Grant
    Filed: May 29, 2015
    Date of Patent: February 20, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hyun-Ho Lim, Jin-Woo Kim
  • Patent number: 9892705
    Abstract: A data driver includes buffers, bias circuits, and a bias signal generator. The buffers respectively output data voltages corresponding to pixel image data. The bias circuits generate bias currents independent of each other and apply the bias currents to respective ones of the buffers. The bias signal generator generates a plurality of bias signals. Each of the bias circuits include a selector and a bias current generator. The selector selects one bias signal among the bias signals based on corresponding pixel image data and outputs the selected bias signal as a final bias signal. The bias current generator generates a corresponding bias current among the bias currents based on the final bias signal.
    Type: Grant
    Filed: April 15, 2015
    Date of Patent: February 13, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Suhyeong Park, Hoyong Jung
  • Patent number: 9886205
    Abstract: The present disclosure discloses a programmable Gamma voltage output device having a non-volatile memory (NVM), a controller, a digital signal generation module, a digital to analog converter (DAC), and output verification module. The NVM is configured for duplicating a copy of a corresponding voltage data code when programming the voltage data code. The controller is configured for sending control signals to the digital signal generation module in accordance with the voltage data code. The digital signal generation module is configured for outputting digital signals to the DAC in accordance with the control signals. The DAC is configured for converting the digital signals to a Gamma voltage. The output verification module is configured for verifying whether the Gamma voltage is within a predetermined voltage range. In addition, a display device is also disclosed.
    Type: Grant
    Filed: July 31, 2015
    Date of Patent: February 6, 2018
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd
    Inventor: Xianming Zhang
  • Patent number: 9835856
    Abstract: An A liquid-crystal adaptive optics actuator comprising a two-dimensional array of pixels (14), wherein each pixel (14) is connected to a control circuit by means of a control line signal path (16, 20) that comprises an electrical interconnection (16) and a meandering resistor (20), each resistor having a resistance value selected to equalize the RC time constant of each control line signal path associated to each pixel. Each control line is thus capable of carrying one or more control signals and the control line signal path is configured such that all the pixels respond to the control signals with a uniform response time.
    Type: Grant
    Filed: May 24, 2013
    Date of Patent: December 5, 2017
    Assignee: Raytheon Company
    Inventor: Steven R. Collins
  • Patent number: 9818350
    Abstract: A method of synchronizing a driving module includes applying a plurality of original data enable (“DE”) signals to a plurality of timing controller of the driving module, respectively, generating a synch DE signal from the driving module based on the earliest signal among the original DE signals, and transferring the synch DE signal to the plurality of timing controllers in a cascade mode.
    Type: Grant
    Filed: June 3, 2014
    Date of Patent: November 14, 2017
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Young-Soo Sohn, Ki-Tae Yoon, Jae-Gwan Jeon, Akihiro Takegama
  • Patent number: 9792861
    Abstract: An electro-phoretic display and a method for driving the same are provided, where the electro-phoretic display has a plurality of pixel units. The method includes: setting a plurality of particle tightening time periods and a plurality of gray level displaying time periods for the pixel units respectively, where each of the gray level displaying time periods is arranged after each corresponding particle tightening time period; providing a plurality of particle tightening voltages to the pixel units for tightening the particles of the pixel units respectively during the particle tightening time periods, and providing a plurality of display driving voltages to the pixel units during the gray level displaying time periods. The particle tightening time periods and/or the gray level displaying time periods are determined by a plurality of display gray level data corresponding to the pixel units.
    Type: Grant
    Filed: June 26, 2013
    Date of Patent: October 17, 2017
    Assignee: E Ink Holdings Inc.
    Inventors: Ming-Jen Chang, Jo-Cheng Huang, Shao-Wei Su, Chun-An Wei, Yao-Jen Hsieh
  • Patent number: 9786216
    Abstract: To reduce the occurrence of flicker in an image with almost no movement and reduce the occurrence motion blur in an image with movement, an image processing apparatus detects movement information from acquired image data. The image processing apparatus causes a display unit to perform first light emission to display a first frame, and also causes the display unit to perform second light emission to display a second frame, the first frame and the second frame corresponding to one frame of the acquired image data. The image processing apparatus controls at least either light emission time periods of the first light emission and the second light emission or light emission luminances of the first light emission and the second light emission based on the movement information.
    Type: Grant
    Filed: August 26, 2014
    Date of Patent: October 10, 2017
    Assignee: Canon Kabushiki Kaisha
    Inventor: Eisaku Tatsumi
  • Patent number: 9778839
    Abstract: A method for efficient data input may include displaying a user interface, detecting a plurality of positions of an object, and, controlling a display screen to display a data content, in response to a plurality of movements of the object. If the controller determines the object moved substantially in a first direction, the display screen modifies the data content based on a group of data choices. If the controller determines the object moved substantially in a second direction, the controller stores, into a memory, the data content currently being displayed on the display screen.
    Type: Grant
    Filed: July 12, 2013
    Date of Patent: October 3, 2017
    Assignee: SAP SE
    Inventor: Zongzhi Wen
  • Patent number: 9727165
    Abstract: A display may have an array of pixels controlled by display driver circuitry. Gate driver circuitry supplies gate line signals to rows of the pixels. The gate driver circuitry may include blocks of gate driver circuits each having an output coupled to a respective one of the gate lines. The gate driver circuits of each block are coupled in a chain to form a shift register. Each block has a local block-level gate start pulse generator. The display driver circuitry has a display driver circuit that supplies a gate start pulse clock to each of the local block-level gate start pulse generators. The local block-level gate start pulse generators create gate start pulses that are applied to the first gate driver circuit in each shift register. The display driver circuit may delay the gate start pulse clock when it is desired to implement an intraframe pause.
    Type: Grant
    Filed: April 2, 2015
    Date of Patent: August 8, 2017
    Assignee: APPLE INC.
    Inventors: Rungrot Kitsomboonloha, Chun-Yao Huang, Shih Chang Chang, Szu-Hsien Lee
  • Patent number: 9697793
    Abstract: In an exemplary flat display apparatus and control circuit and method for controlling the flat display apparatus, the flat display apparatus includes a plurality of gate driving units, each of which controls the operation of a scan line in the flat display apparatus. The flat display apparatus provides a first gate high level voltage signal and a second gate high level voltage signal to the gate driving units such that the first and second gate high level voltage signals are used as voltage signals transmitted to corresponding scan lines. The first and second gate high level voltage signals respectively include a falling edge with a slope. Duration time of the falling edge of the first gate high level voltage signal is longer than that of the falling edge of the second gate high level voltage signal.
    Type: Grant
    Filed: January 6, 2015
    Date of Patent: July 4, 2017
    Assignee: AU OPTRONICS CORP.
    Inventors: Chun-Fan Chung, Tien-Lun Ting, Chia-Chi Tsai, Ming-Hung Tu, Chien-Huang Liao, Yu-Chieh Chen, Pin-Miao Liu
  • Patent number: 9679515
    Abstract: A Light-Emitting Diode (LED) driving circuit and a control system includes: a driving control circuit and a constant current channel group circuit, wherein the driving control circuit includes: a logic control circuit and a clock delay circuit; the logic control circuit is connected with the constant current channel group circuit, and is configured to control the ordered switching-on or switching-off of the constant current channel group circuit by virtue of a data control signal; and the clock delay circuit is connected with the logic control circuit, configured to acquire a timing control signal synchronous with the data control signal and output the timing control signal and integrated in the LED driving circuit.
    Type: Grant
    Filed: May 31, 2013
    Date of Patent: June 13, 2017
    Assignee: LEYARD OPTOELECTRONICS CO., LTD.
    Inventors: Changjun Lu, Zhiyong Lui
  • Patent number: 9672769
    Abstract: A display apparatus includes a display panel having a first portion and a second portion, a gate driver configured to drive a first gate line group in the first portion of the display panel starting at a first scan start point and to drive a second gate line group in the second portion of the display panel starting at a second scan start point, the second scan start point being different from the first scan start point, a first data driver configured to output a first data voltage to a first data line group in the first portion and a second data driver configured to output a second data voltage to a second data line group in the second portion.
    Type: Grant
    Filed: October 24, 2014
    Date of Patent: June 6, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jae-Hoon Lee, Woo-Chul Kim, Seung-Ho Park
  • Patent number: 9620054
    Abstract: A timing controller, OLED display having the same and method of for driving the display are disclosed. The timing controller includes a failure mode determiner that can receive an input signal and determine whether the OLED display is in a failure mode based on the input signal. The timing controller also includes a failure mode generator configured to store a fail signal, output the fail signal in the failure mode, and selectively output a multiplexed signal including one of the input signal or the fail signal based on whether the OLED display is in the failure mode. The timing controller further includes a failure mode controller configured to receive the multiplexed signal from the failure mode generator, store the multiplexed signal, and selectively output the multiplexed signal of a current frame or the multiplexed signal of a previous frame based on whether the OLED display is in the failure mode.
    Type: Grant
    Filed: March 19, 2015
    Date of Patent: April 11, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Min-Ha Keum, Woo-Chul Kim
  • Patent number: 9589532
    Abstract: A data driver includes buffers respectively outputting data voltages corresponding to pixel image data, bias units corresponding to the buffers in a one-to-one correspondence and driving the buffers, respectively, and a global setting part applying control level values to the bias units. Each of the bias units includes a bias signal generating unit that selects one control level value among the control level values based on a corresponding pixel image data among the pixel image data and generates a bias signal having a control level corresponding to the selected control level value and a current generating unit that generates a corresponding bias current in response to the bias signal and applies the corresponding bias current to a corresponding buffer among the buffers.
    Type: Grant
    Filed: April 16, 2015
    Date of Patent: March 7, 2017
    Assignee: Samsung Display Co., Ltd.
    Inventors: Suhyeong Park, Hoyong Jung
  • Patent number: 9530365
    Abstract: The disclosure relates to a method for controlling signal values on gate lines, a gate driving circuit and a display device. The method comprises: for each of gate lines in the valid display area, in a first frame in any two adjacent frames of image, connecting a gate connecting line in a first layer to a gate line by a first strobe unit and applying a first signal value to the gate line; in a second frame, connecting a gate connecting line in a second layer to the gate line by a second strobe unit and applying a second signal value to the gate line. It may address the issue of H-line Mura due to different impedances of wires in the gate layer and the S/D layer.
    Type: Grant
    Filed: November 27, 2013
    Date of Patent: December 27, 2016
    Assignee: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Lingyun Shi, Yi Zheng, Rui Liu
  • Patent number: 9514698
    Abstract: A liquid crystal display includes: a liquid crystal capacitor; a first switching element which transmits a data voltage to the liquid crystal capacitor; a second switching element connected to the liquid crystal capacitor; and a transformation capacitor connected to the second switching element. A difference between a first time when the first switching element is turned on and a second time when the second switching element starts is turned on is greater than 1 horizontal period and less than 1 frame period.
    Type: Grant
    Filed: April 11, 2016
    Date of Patent: December 6, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventor: Jang-Kun Song
  • Patent number: 9514694
    Abstract: The present disclosure provides an array substrate, which includes a flexible substrate and an array layer formed on the flexible substrate. The array layer includes: data lines, gate lines, thin film transistors and a driving unit. The driving unit is configured to output data driving signals to connected data lines. The data lines includes a first data line connected to thin film transistors of a first number and a second data line connected to thin film transistors of a second number. The number of sub-signals in a data driving signal outputted to the first data line by the driving unit within a time period of one frame is the first number. The number of sub-signals in a data driving signal outputted to the second data line by the driving unit within a time period of one frame is the second number.
    Type: Grant
    Filed: April 24, 2014
    Date of Patent: December 6, 2016
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Wei Qin, Weifeng Zhou, Jing Su, Yong Qiao
  • Patent number: 9495922
    Abstract: Disclosed herein is a display device including: a display section configured to have a plurality of scanning signal lines to which respective scanning signals are applied, the display section performing line-sequential scanning by repeating interruption and resumption of the line-sequential scanning on a basis of the plurality of scanning signals, and displaying an image; and a scanning section configured to generate the plurality of scanning signals such that transition times on a pulse termination side of the respective scanning signals are equal to each other.
    Type: Grant
    Filed: February 21, 2013
    Date of Patent: November 15, 2016
    Assignee: Japan Display Inc.
    Inventors: Yukiya Hirabayashi, Koji Shimizu, Yutaka Ozawa
  • Patent number: 9459473
    Abstract: An integrated gate driver circuit includes a control circuit, a plurality of drive stages and a plurality of discharge transistors. The control circuit is configured to output a plurality of clock signals within a frame period and to output a discharge enabling signal within a blanking period of the frame period. Each of the drive stages receives the clock signals and includes an output terminal configured to output a gate driving signal. Each of the discharge transistors is coupled to the output terminal of one of the drive stages and discharges the output terminal according to the discharge enabling signal thereby eliminating the voltage fluctuation of the output terminal in the blanking period.
    Type: Grant
    Filed: February 20, 2013
    Date of Patent: October 4, 2016
    Assignee: HANNSTAR DISPLAY CORP
    Inventors: Chun-Chin Tseng, Ya-Wen Lee, Kuo-Wen Pan
  • Patent number: 9449569
    Abstract: A liquid crystal display device capable of consuming less power and a method for driving the liquid crystal display device are provided. The liquid crystal display device includes a pixel portion, a light supply portion sequentially supplying lights of a plurality of hues to the pixel portion, a counter counting the number of frame periods, a signal generator determining timing of inverting the polarity of an image signal every plural consecutive frame periods by using data on the number of frame periods counted by the counter, and a controller inverting the polarity of the image signal in accordance with the timing. A plurality of pixels are provided in the pixel portion. The image signal whose polarity is inverted every plural frame periods is input to the plurality of pixels.
    Type: Grant
    Filed: July 12, 2013
    Date of Patent: September 20, 2016
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Jun Koyama, Yoshiharu Hirakata, Hiroyuki Miyake
  • Patent number: 9418614
    Abstract: There is provided a liquid crystal display apparatus capable of preventing image degradation when driving a liquid crystal panel. In the liquid crystal display apparatus, a control unit, when there are more pixels indicating the first gradation than the second gradation, controls the supply state of the pixel voltage simultaneously supplied to the plurality of pixel electrodes to prolong the time period between the timing of changing the supply state of the pixel voltage corresponding to the first gradation and the timing of changing the supply state of the pixel voltage corresponding to the second gradation so as to become longer than that when there are fewer pixels indicating the first gradation than the second gradation.
    Type: Grant
    Filed: October 8, 2012
    Date of Patent: August 16, 2016
    Assignee: Canon Kabushiki Kaisha
    Inventor: Kensuke Inagaki
  • Patent number: 9384705
    Abstract: A gate driver is disclosed. The disclosed gate driver includes a shift register configured to generate a shift signal. The shift signal is based on a gate start signal and a gate clock signal. The gate driver further includes a gate drive signal generator configured to generate a gate drive signal. The gate drive signal is based on a gate control signal and the shift signal. The rising edge of the gate control signal precedes the falling edge of the shift signal, and the falling edge of the gate control signal follows the falling edge of the shift signal. The gate drive signal falls from a second voltage to a third voltage in response to the falling edge of the shift signal and rises from the third voltage to a first voltage in response to the falling edge of the gate control signal. The first voltage is higher than the third voltage but lower than the second voltage.
    Type: Grant
    Filed: June 27, 2014
    Date of Patent: July 5, 2016
    Assignee: Dongbu Hitek Co., Ltd.
    Inventors: Choong Sik Ryu, Eun Mee Lee
  • Patent number: 9336738
    Abstract: In one or more example embodiments, a display controller includes a stable pixel writing period in one horizontal period in a display device, the stable pixel writing period being a period during which a voltage outputted from a gate driver is at a high level. The display controller also includes a first stable pixel writing period determination circuit which determines, by using a reference signal independent from the frame rate in the display device, the stable pixel writing period during which the voltage is at the high level. Thus, the display controller can be provided in which, regardless of whether and how the frame rate is changed, the stable pixel writing period can be of a target length.
    Type: Grant
    Filed: October 20, 2014
    Date of Patent: May 10, 2016
    Assignee: Sharp Kabushiki Kaisha
    Inventors: Toshihiro Yanagi, Takuji Miyamoto, Atsuhito Murai
  • Patent number: 9318068
    Abstract: Systems and methods for efficiently generating display driver timing signals are provided. In one example, display driver circuitry of an electronic display may provide a negative voltage from a negative voltage supply to display control circuitry during a first period and may provide a positive voltage from a positive voltage supply to the display control circuitry during a second period. After providing the negative voltage during the first period but before providing the positive voltage during the second period, the display driver circuitry may precharge the capacitance of the display control circuitry to ground. In this way, the positive voltage supply substantially does not supply charge to raise the voltage on the capacitance of the display control circuitry from the negative voltage to ground.
    Type: Grant
    Filed: November 15, 2013
    Date of Patent: April 19, 2016
    Assignee: APPLE INC.
    Inventors: David A. Stronks, Hopil Bae, Kingsuk Brahma, Sang Y. Youn
  • Patent number: 9305499
    Abstract: A driving apparatus applied in a liquid crystal display is disclosed. The driving apparatus at least includes a first latch, a second latch, an output buffer, and a slew rate enhancing module. The first latch is used to store a second data signal. The second latch is used to store a first data signal. The first data signal is previous to the second data signal. The slew rate enhancing module is used to compare the first data signal and the second data signal to generate a compared result, and correspondingly output a control signal to the output buffer according to the compared result to control a driving current of the output buffer.
    Type: Grant
    Filed: April 29, 2013
    Date of Patent: April 5, 2016
    Assignee: Raydium Semiconductor Corporation
    Inventor: Chih Chuan Huang
  • Patent number: 9291870
    Abstract: A thin film transistor includes a semiconductor pattern on a base substrate, the semiconductor pattern including an input area, an output area, and a channel area between the input area and the output area, a first insulating layer covering the semiconductor pattern, a control electrode on the first insulating layer, the control electrode overlapping the channel area, a second insulating layer covering the control electrode, an input electrode connected to the input area, an output electrode connected to the output area, and a heat discharge electrode on the second insulating layer, the heat discharge electrode being connected to the control electrode.
    Type: Grant
    Filed: August 19, 2014
    Date of Patent: March 22, 2016
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Young Jun Shin, Jeehoon Kim, Sehun Park, Jaehwan Oh, Guanghai Kim, Byoungki Kim, Wonkyu Lee
  • Patent number: 9293084
    Abstract: An object of the present invention is to, in an organic EL display device in which an initialization voltage is applied, extend the time period usable to write a video voltage as compared with the conventional art. In order to achieve this object, the organic EL display device includes a plurality of pixels each including an organic EL element; a plurality of video lines that supply a video voltage to each of the plurality of pixels; a plurality of scanning lines that supply a scanning voltage to each of the plurality of pixels; a unit that supplies a selection scanning voltage concurrently to an N number of scanning lines among the plurality of scanning lines, and supplies an initialization voltage to each of the plurality of video lines, in a k'th scanning period; and a unit that supplies a selection scanning voltage sequentially to the N number of scanning lines, and supplies video voltages to each of the plurality of video lines, in (k+1)th through (k+N)th scanning periods respectively.
    Type: Grant
    Filed: August 26, 2014
    Date of Patent: March 22, 2016
    Assignee: Japan Display Inc.
    Inventor: Nobuhiro Takeda
  • Patent number: 9280926
    Abstract: A control board in a display device includes terminals and a control circuit. The control circuit is configured to output a control signal an image signal through the terminals and to generate a drive voltage in response to a feedback signal, which is fed back to a second terminal of the terminals when a source voltage is applied to a first terminal of the terminals.
    Type: Grant
    Filed: January 15, 2014
    Date of Patent: March 8, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jun-Ho Hwang, Kihyun Pyun, Seung-Woon Shin, Jang-Mi Lee
  • Patent number: 9275595
    Abstract: A source driving circuit includes an output buffer circuit to compensate for slew rate of signals used to drive a display device. The output buffer circuit includes a bias current control signal generating circuit and a channel amplifying circuit. The bias current control signal generating circuit performs an exclusive OR operation on an input signal and an output signal of a reference operational amplifier to generate a bias current control signal. The channel amplifying circuit adjusts the slew rate of a plurality of output voltage signals in response to the bias current control signal. The output signals are then used to control the display device.
    Type: Grant
    Filed: February 20, 2014
    Date of Patent: March 1, 2016
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jin-Han Kim, Jae-Wook Kwon, Seong-Jong Yoo, Ha-Jun Lee
  • Patent number: 9270958
    Abstract: A LCD display includes a light source section, a LCD panel including a plurality of pixels each having sub-pixels of R, G, B, and Z, and a display control section including an output signal generation section. The display control section performs a display drive on the sub-pixels with use of the respective output video signals, and performs a lighting drive on the light source section with use of the lighting signal. The output signal generation section generates output video signals corresponding to the respective four colors, based on the input video signals, and generates a lighting signal of the light source section, based on the input video signals, to perform a predetermined dimming processing, based on both the input video signals and the generated lighting signal, and finally generates the output video signals through performing a predetermined color conversion processing, based on a resultant video signal from the dimming processing.
    Type: Grant
    Filed: July 13, 2011
    Date of Patent: February 23, 2016
    Assignee: SONY CORPORATION
    Inventors: Ken Kikuchi, Tomoya Yano
  • Patent number: 9240154
    Abstract: A liquid crystal display comprises: a first data drive circuit that supplies a data voltage to data lines present in a first portion and a third portion on the screen of a liquid crystal display panel in response to a first source output enable signal; and a second data drive circuit that supplies the data voltage to data lines present in a second portion and a fourth portion on the screen of the liquid crystal display panel in response to a second source output enable signal. The first source output enable signal controls the data voltage output timing and charge sharing timing of the first data drive circuit. The second source output signal controls the data output timing and charge sharing timing of the second data drive circuit in a different way from the first data drive circuit.
    Type: Grant
    Filed: September 22, 2011
    Date of Patent: January 19, 2016
    Assignee: LG Display Co., Ltd.
    Inventors: Mangyu Park, Jincheol Hong
  • Patent number: 9241387
    Abstract: There is provided an organic light emitting display device capable of reducing power consumption by adjusting a voltage according to an input image and deterioration of the organic light emitting display device and a method of driving the same.
    Type: Grant
    Filed: September 20, 2013
    Date of Patent: January 19, 2016
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jeong-Hwan Shin, Wook Lee, Se-Byung Chae
  • Patent number: 9224758
    Abstract: A highly reliable semiconductor device that includes a transistor including an oxide semiconductor, which can display a high-definition image and can be manufactured with a high yield. The semiconductor device includes a pixel portion including a plurality of pixels, a gate signal line driver circuit portion, and a source signal line driver circuit portion including a first circuit that controls timing of sampling video signals and a second circuit that samples the video signals in accordance with the timing and then inputs the sampled video signals to the pixels. The second circuit includes a plurality of transistors in each of which an oxide semiconductor stacked layer is used as a channel formation region, the first circuit and the second circuit are electrically connected to each other by a wiring, and the wiring is electrically connected to gates of at least two transistors of the plurality of transistors.
    Type: Grant
    Filed: July 17, 2014
    Date of Patent: December 29, 2015
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Shunpei Yamazaki, Kenichi Okazaki, Masahiro Watanabe, Takuya Handa
  • Patent number: 9219909
    Abstract: In a 3D image display device and a driving method thereof, a left-eye image and a right-eye image are displayed at a 3D display frequency higher than a 2D display frequency in a 3D mode. The left-eye image or the right-eye image is applied to a data line as data voltages having the same polarity and the same magnitude throughout at least two consecutive frames. A gate-on voltage is applied to a plurality of gate lines crossing the data line sequentially at an interval of a compensation gate-on application time calculated based on a total data delay value.
    Type: Grant
    Filed: January 27, 2012
    Date of Patent: December 22, 2015
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jun Pyo Lee, Bong Im Park, Ik Hyun Ahn, Ho Seok Son, Jung-Won Kim, Se Huhn Hur
  • Patent number: 9217905
    Abstract: A dual-gate-driven lateral pixel arrangement structure includes two horizontally adjacent primary pixel regions having each three vertically adjacent secondary pixel regions forming a grid of six secondary pixel regions, and six thin-film transistors disposed in each of the six secondary pixel areas. The structure also includes two gate lines and three data lines crossing each other and electrically isolated from each other. Each data line is connected to the source of two thin-film transistors having the gate connected to a different gate line. The two gate lines are interposed between the three secondary pixel regions or arranged along a side or opposite sides of the primary pixel regions in a first direction. The three data lines are arranged between the primary pixel regions and along a side or opposite sides of the primary pixel regions in a second direction different from the first direction.
    Type: Grant
    Filed: November 22, 2013
    Date of Patent: December 22, 2015
    Assignee: Shanghai AVIC Optoelectronics Co., Ltd.
    Inventors: Zhiqiang Xia, Chen Chen, Zhongshou Huang, Sisi Zhou
  • Patent number: 9201483
    Abstract: An image processing unit including an always on circuit block and a non-always on circuit block is provided. When operating under a first operation mode, the non-always on circuit block receives a bias voltage from a power supply unit, so as to perform an image processing operation on an image input signal. When operating under a second operation mode, the non-always on circuit block stops receiving the bias voltage from the power supply unit, so as to stop the image processing operation, and at least a microcontroller of the non-always on circuit block is powered down. One of the always on circuit block and the non-always on circuit block controls the power supply unit to stop supplying the bias voltage to the non-always on circuit block according an event trigger signal, such that the non-always on circuit block enters the second operation mode from the first operation mode.
    Type: Grant
    Filed: June 4, 2013
    Date of Patent: December 1, 2015
    Assignee: Novatek Microelectronics Corp.
    Inventors: Wen-Chi Lin, Kuo-Chi Chen, Sih-Ting Wang, Wen-Hsuan Lin, Chung-Wen Wu
  • Patent number: 9197204
    Abstract: A driving circuit includes at least one output end, at least one driving voltage module, and at least one signal module. The output end receives and outputs an analog voltage. The at least one driving voltage module is connected with the at least one output end and generates a driving voltage, wherein the driving voltage module determines a voltage value of an output voltage according to a relation between an analog voltage and the driving voltage and transmits the output voltage to the at least one output end. The at least one signal module is connected with the at least one output end and outputs an analog data according to the analog voltage, wherein the at least one driving voltage module stores a residual voltage of the at least one signal module when the at least one signal module converts the analog voltage and the analog voltage is larger than the driving voltage.
    Type: Grant
    Filed: January 14, 2013
    Date of Patent: November 24, 2015
    Assignee: Raydium Semiconductor Corporation
    Inventor: Cheng-Chin Liu
  • Patent number: 9191657
    Abstract: An image display device includes a display element selectively implementing a 2D image and a 3D image and a patterned retarder. The display element includes a pixel array including a plurality of subpixels, which are respectively formed at crossings of column lines and row lines. The patterned retarder includes a plurality of first retarders, each of which transmits light from the display element as a first polarization component, and a plurality of second retarders, each of which transmits the light from the display element as a second polarization component. The first retarders and the second retarders are alternatively arranged.
    Type: Grant
    Filed: December 20, 2011
    Date of Patent: November 17, 2015
    Assignee: LG Display Co., Ltd.
    Inventors: Dongun Kim, Suwoong Lee, Chonghun Park, Sangrae Lee