Particular Timing Circuit Patents (Class 345/99)
  • Patent number: 11127337
    Abstract: The present embodiment relates to a device for driving pixels arranged on a display panel, and a data driving device according to the present embodiment can transmit image data to a plurality of channel groups by including two or more mapping units for mapping the image data to a channel link or by using one data mapping unit connected to a plurality of multiplexers.
    Type: Grant
    Filed: December 17, 2018
    Date of Patent: September 21, 2021
    Assignee: SILICON WORKS CO., LTD.
    Inventors: Min Young Jeong, Yong Jung Kwon, Ho Sung Hong, Jung Bae Yun, Jeung Hie Choi
  • Patent number: 11114039
    Abstract: A micro-display device comprises a silicon substrate in which a plurality of gate lines, a plurality of data lines, a plurality of emission signal lines, and a plurality of subpixels are disposed; a gate driver circuit disposed on a first side of a pixel array to drive the plurality of gate lines; an emission driver circuit driving the plurality of emission signal lines and disposed on a second side of the pixel array different from the first side of the pixel array where the gate driver circuit is disposed; a data driver circuit disposed on a third side of the pixel array to drive the plurality of data lines; a memory storing duty data regarding duty ratios of an emission signal applied to the plurality of emission signal lines; and a control circuit controlling signals applied to the gate driver circuit, the data driver circuit and the emission driver circuit, wherein the control circuit is set to have different emission times with respect to subpixels connected to the plurality of emission signal lines acc
    Type: Grant
    Filed: December 4, 2019
    Date of Patent: September 7, 2021
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Sojung Jung, Beom-Jin Kim, Bongchoon Kwak
  • Patent number: 11011128
    Abstract: The present invention teaches a GOA circuit driving method and a GOA circuit driving device. Through the configuration of a buffer capacitor electrically connected to the level shift IC, the level shift IC connects to the buffer capacitor and switches to the transition level during shifting the target clock signals from high to low level or from low to high level. Through the buffer capacitor, the present invention is able to keep the transition level always equal to one half of the sum of the low voltage and the high voltage, thereby maximizing reduction of power consumption and feedthrough effect of the GOA circuit.
    Type: Grant
    Filed: September 27, 2018
    Date of Patent: May 18, 2021
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Xiang Gao
  • Patent number: 11003034
    Abstract: The present invention relates to a display device comprising: a display panel having a plurality of pixels and a plurality of source lines, wherein each of the pixels is electrically connected to a respective source line; and an SD IC for providing pixel voltages and receiving a noise storage control signal and a noise output control signal; characterized in that the SD IC further comprises a noise reduce module to store voltage levels of the pixel voltages as compensating voltages based on the noise storage control signal and to output the compensating voltages based on the noise output control signal, wherein during a normal period, the SD IC outputs the pixel voltages to the pixels; during a compensation period, the SD IC outputs the compensating voltages to the pixels; wherein the noise output control signal is phased-delayed with respect to the noise storage control signal.
    Type: Grant
    Filed: September 13, 2018
    Date of Patent: May 11, 2021
    Assignee: AU OPTRONICS (KUNSHAN) CO., LTD.
    Inventors: Chung-Yu Huang, Jian-Feng Li, Kai-Yuan Siao
  • Patent number: 10991295
    Abstract: A display driver (100) drives a liquid crystal panel (200) that is driven by a static drive method. The display driver (100) includes an interface circuit (110), a selection circuit (120), and a drive circuit (130). The interface circuit (110) receives instruction information and display data from the outside. The selection circuit (120) selects n pieces of selected duty ratio data, which are n pieces of duty ratio data of k pieces of duty ratio data, based on the instruction information. The drive circuit (130) selects output duty ratio data corresponding to a tone value indicated by the display data from the n pieces of selected duty ratio data, and performs PWM driving of the liquid crystal panel (200) by outputting a drive signal having a duty ratio indicated by the selected output duty ratio data.
    Type: Grant
    Filed: July 2, 2020
    Date of Patent: April 27, 2021
    Inventors: Ryota Takizawa, Norichika Muraki
  • Patent number: 10978010
    Abstract: The present invention provides a line over driving (LOD) table adjustment method and a system thereof, which divides a display panel into M*N blocks. In an i-th row and a j-th column in the LOD table corresponding to a block, according to a brightness value of a grayscale value of a pixel of a previous line and a current line corresponding to an initial grayscale value of over driving pixels, calculate a target brightness value of an adjustment screen corresponding to a combination of the grayscale value of the pixel of the previous line and the current line corresponding to the initial grayscale value of over driving pixels, and obtain a measured brightness value of the adjustment screen to compare whether the difference between the target brightness value and the measured brightness value is within the default error range value to determine a final grayscale value of over driving pixel.
    Type: Grant
    Filed: August 9, 2019
    Date of Patent: April 13, 2021
    Assignee: TCL China Star Optoelectronics Technolog Co., Ltd.
    Inventors: Bobiao Chang, Yichien Wen
  • Patent number: 10978012
    Abstract: A display device capable of setting an optimal output enable value according to a color pattern and a method for driving the display device. A timing controller is configured to receive an image signal from an external source, identify a color pattern and set an output enable value corresponding to the identified color pattern. A scan driver is configured to receive the output enable value and generate a first scan signal having a first turn-on signal and a second scan signal adjacent to the first scan signal and having a second turn-on signal. The scan driver may adjust an interval between the first turn-on signal and the second turn-on signal based on the output enable value.
    Type: Grant
    Filed: June 10, 2020
    Date of Patent: April 13, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Sang Jun Park, Kyun Ho Kim, Shim Ho Yi, Yong Jin Shin, Yu Chol Kim
  • Patent number: 10957242
    Abstract: A display panel is provided. The display panel includes a display area comprising a gate line and a data line, and a gate driver connected to a terminal of the gate line. The gate driver includes a plurality of stages that are integrated on a substrate, and each stage comprises an inverter unit, an output unit, and a Q node stabilization unit. The output unit includes a first transistor and a first capacitor, wherein the first transistor includes an input terminal for receiving a clock signal, a control terminal connected to a node Q, and an output terminal connected to a gate voltage output terminal to output a gate voltage. A Vgs voltage of a transistor in the Q node stabilization unit has a value of equal to or less than 0 V when the output unit outputs a gate-on voltage.
    Type: Grant
    Filed: September 25, 2019
    Date of Patent: March 23, 2021
    Inventors: Jung Hwan Hwang, Beom Jun Kim, Seong Yeol Syn, Bong-Jun Lee, You Mee Hyun
  • Patent number: 10957260
    Abstract: A source driver of a display system includes a plurality of channels, and each of the plurality of channels includes a first latch, a second latch, an output driver and a comparator. The first latch receives a first data code and a second data code from a timing controller of the display system. The second latch receives the first data code from the first latch. The output driver is used for transmitting the first data code to a display panel of the display system. The comparator, coupled to the first latch, the second latch and the output driver, is used for comparing the first data code stored in the second latch with the second data code stored in the first latch, to generate a signal indicating a power level for the output driver to transmit the second data code.
    Type: Grant
    Filed: July 23, 2017
    Date of Patent: March 23, 2021
    Assignee: NOVATEK Microelectronics Corp.
    Inventors: Cheng-Kai Kuei, Chin-Hung Hsu
  • Patent number: 10943530
    Abstract: A mura compensation apparatus for an organic light emitting diode (OLED) display includes a calculator and a mura compensator. The calculator is configured to calculate a non-maximum-luminance demura offset value of a pixel of the OLED display for a determined gray level on the basis of a gamma value, a maximum-luminance demura offset value of the pixel of the OLED display for a relocated gray level and a non-maximum luminance value of the OLED display. The mura compensator is configured to perform mura compensation on the pixel of the OLED display by the non-maximum-luminance demura offset value for the determined gray level.
    Type: Grant
    Filed: February 24, 2020
    Date of Patent: March 9, 2021
    Assignee: HIMAX TECHNOLOGIES LIMITED
    Inventor: Ying-Han Yeh
  • Patent number: 10909061
    Abstract: A communication system includes: a transmitter configured to be responsive to a control request from a local device that facilitates toggling of the transmitter On and Off in a pattern of interruption to generate multiple consecutive On/Off bits having On/Off signals with a same pulse width that represents control information, the transmitter configured to transmit data via a communication medium at a first end thereof, the communication medium also having a second end; and, in response to the pattern of interruption, the transmitter is configured to interrupt the communication medium at the first end, each interrupting of the communication medium at the first end resulting in a detection of a loss of signal at the second end.
    Type: Grant
    Filed: August 29, 2019
    Date of Patent: February 2, 2021
    Assignee: THINKLOGICAL, LLC
    Inventor: Martin Green
  • Patent number: 10909905
    Abstract: A flat panel display that includes a switch bank to couple a signal from a driver integrated circuit to a column data line of a display panel is disclosed. The switch bank can be adjusted based on the frame rate of the display. When the frame rate is high, all sub-switches in the switch bank may be used to reduce an ON resistance of the switch bank. This high frame rate configuration may maintain or increase the speed at which pixels can be controlled but consumes more power. Accordingly, when the frame rate is low, a portion of the sub-switches in the switch bank are unused to reduce the power consumed. This low frame rate configuration may maintain or decrease the speed at which pixels of the display can be controlled but consumes less power.
    Type: Grant
    Filed: April 2, 2019
    Date of Patent: February 2, 2021
    Assignee: Google LLC
    Inventors: Sangmoo Choi, Chang Ju Kang
  • Patent number: 10903253
    Abstract: An imaging device is provided in which, at a position where a line passes a pixel in a first row along a second direction intersecting with a first direction, a first signal line and a second signal line are arranged at overlapping positions, in which, at a position where a line passes a pixel in a second row along the second direction, the first and the second signal lines are arranged at non-overlapping positions, and, in which, at a position where a line passes a pixel in a third row along the second direction, the first and the second signal lines are arranged at overlapping positions.
    Type: Grant
    Filed: November 28, 2018
    Date of Patent: January 26, 2021
    Assignee: Canon Kabushiki Kaisha
    Inventors: Yoichi Wada, Daisuke Yoshida, Fumihiro Inui
  • Patent number: 10902812
    Abstract: A display apparatus includes a display panel displaying an image and including a gate line and a data line, a gate driver outputting a gate signal to the gate line, a data driver outputting a data signal to the data line, a timing controller outputting a vertical start signal and a gate clock, and a gate clock signal compensator generating an inner clock signal based on the vertical start signal, selecting one of the gate clock signal and the inner clock signal based on a comparison result of a time difference between the gate clock signal and the inner clock signal and a reference time which corresponds to tolerance of jitter of the gate clock signal, increasing a level of the selected clock signal, and outputting the increased clock signal to the gate driver, where the gate driver generates the gate signal based on the increased clock signal.
    Type: Grant
    Filed: July 6, 2018
    Date of Patent: January 26, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventor: Chang-Soo Lee
  • Patent number: 10901273
    Abstract: A display apparatus includes a first base plate, a second base plate and a liquid crystal layer. A first scan line and a second scan line are disposed above the first base plate and extend along a first direction. A first data line and a second data line are disposed above the first base plate, wherein the first scan line, the second scan line, the first data line and the second data line define a first region. A first thin-film transistor is electrically connected to the first scan line. A first common electrode is disposed above the first base plate and disposed in the first region, wherein the first common electrode comprises a first part, the first part is adjacent to the first scan line and extends along the first direction, and the first part overlaps the first thin-film transistor.
    Type: Grant
    Filed: April 3, 2019
    Date of Patent: January 26, 2021
    Assignee: INNOLUX CORPORATION
    Inventors: Tsung-Han Tsai, Hsia-Ching Chu, Mei-Chun Shih
  • Patent number: 10902760
    Abstract: The present disclosure belongs to the field of display technology, and particularly relates to a test circuit, a display substrate, a test method of a display substrate and a display apparatus. The test circuit includes a signal generating device and a plurality of output channels that are mutually independent. Each output channel includes a signal line configured to transmit a test signal. The signal generating device is coupled to the plurality of output channels, and is configured to provide, to each of at least one of the plurality of output channels, the test signal corresponding to an impedance of the signal line in the output channel, and provide the test signal to the signal line in the output channel.
    Type: Grant
    Filed: December 17, 2018
    Date of Patent: January 26, 2021
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., ORDOS YUANSHENG OPTOELECTRONICS CO., LTD.
    Inventors: Xiaowei Wang, Guoqing Zhang, Weifeng Wang, Hongwei Gao
  • Patent number: 10891886
    Abstract: A shift register, a gate line driving method, an array substrate and a display device are provided. The shift register includes a plurality of shift register s arranged in a one-to-one correspondence with gate lines on an array substrate; and a control circuit configured to control signals outputted from the shift register s to the gate lines, to control each row of gate lines to be turned on and off, so that a display area has a high-resolution area and a low-resolution area. In the low-resolution area, the control circuit controls the gate lines to be turned on and off group by group. Each group of gate lines include at least two adjacent gate lines, and gate lines in the same group are turned on and off synchronously.
    Type: Grant
    Filed: September 5, 2017
    Date of Patent: January 12, 2021
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Lei Mi, Shijun Wang, Yanna Xue
  • Patent number: 10847091
    Abstract: A display driver includes a data fetching unit that fetches first to Nth pixel data pieces corresponding to luminance levels of respective pixels and outputs the same at a timing of an edge of a clock signal, first to Nth amplifiers that amplify first to Nth gradation voltages corresponding to the first to Nth pixel data piece to obtain first to Nth driving voltages, and a bias voltage generation unit that generates and supplies bias voltages for setting current values of operation currents to the respective amplifiers. The bias voltage generation unit stores a first value and a second value of the bias voltage used for setting the current value to a higher value and a lower value, and generates a bias voltage having the first value during a period from the timing of the edge of the clock signal, and switches the voltage value to the second value thereafter.
    Type: Grant
    Filed: November 21, 2018
    Date of Patent: November 24, 2020
    Assignee: LAPIS Semiconductor Co., Ltd.
    Inventor: Hiroki Aizawa
  • Patent number: 10818220
    Abstract: A driving method of a display panel is provided. The display panel includes first signal lines, second signal lines, pixel structures, first signal line driving circuits, and second signal line driving circuits. The first signal line driving circuits divide the first signal lines into first signal line groups and sequentially enable the first signal lines of the first signal line groups. In one of the first signal line groups, when one first signal line adjacent to another first signal line group is enabled, the second signal line driving circuits provide a first data signal to each of the second signal lines; and when the rest of the first signal lines are enabled, the second signal line driving circuits provide a second data signal to each of the second signal lines. The first data signal and the second data signal have different waveforms to display a predetermined gray scale.
    Type: Grant
    Filed: September 25, 2018
    Date of Patent: October 27, 2020
    Assignee: E Ink Holdings Inc.
    Inventors: Chao-Ming Tseng, Yu-Hsun Kuo
  • Patent number: 10810946
    Abstract: The present disclosure provides a gate clock generator including a counter, a buffer control signal generator, and an output unit. The counter receives control data having rising timing information and falling timing information and a main clock. The counter generates a first output when a value is obtained by counting the main clock from a preset reference time point reaches rising data. The counter further generates a second output when a value is obtained by counting the main clock from the reference time point reaches falling data. The buffer control signal generator generates a first buffer control signal of a gate ON voltage from a timing of the first output to a timing of the second output. The output unit outputs a gate ON voltage of a gate clock during an output period of the gate ON voltage of the first buffer control signal.
    Type: Grant
    Filed: July 3, 2019
    Date of Patent: October 20, 2020
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Jaewon Han, Soondong Cho, Jungjae Kim, Sanguk Lee, Hyungjin Choe
  • Patent number: 10783820
    Abstract: Disclosed herein are a gate driver capable of implementing a narrow bezel by deleting dummy gate-in-panels (GIPs) and a flat panel display device including the same. The gate driver includes gate-in-panels (GIPs) equal in number to a plurality of gate lines in order to sequentially supply scan pulses to the plurality of gate lines. A k-th GIP is enabled by a carry pulse from a GIP of a (k?a)-th stage and is disabled by a carry pulse output from a GIP of a (k+b)-th stage (a and b are natural numbers), first a GIPs are enabled by a gate start signal output from a timing controller, and last b GIPs are disabled by a reset signal output from the timing controller.
    Type: Grant
    Filed: September 20, 2018
    Date of Patent: September 22, 2020
    Assignee: LG Display Co., Ltd.
    Inventors: Seok Noh, Hae-Jin Park, Ki-Min Son
  • Patent number: 10770018
    Abstract: The present application discloses a scanning signal line drive circuit capable of reducing power consumption and narrowing a picture-frame while ensuring high-speed scanning for image display. First and second gate drivers 410, 420 are arranged to face each other via a display unit 500. Based on a DC buffer method, odd-numbered gate lines are driven by the first gate driver 410 while even-numbered gate bus lines are driven by the second gate driver 420, and when each gate bus line GLi is to be brought into a non-selected state, charges are released from both ends thereof. For this purpose, for example, the end portion of the odd-numbered gate bus line on the first gate driver side is connected to a buffer made up of the activation and inactivation transistors M10, M13L, and the end portion of the odd-numbered gate bus line on the second gate driver side is connected to the inactivation auxiliary transistor M13R.
    Type: Grant
    Filed: March 4, 2019
    Date of Patent: September 8, 2020
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Takatsugu Kusumi, Takuya Watanabe, Akira Tagawa, Yasuaki Iwase, Yohei Takeuchi
  • Patent number: 10762816
    Abstract: A display device may include a timing controller, a data driver and a plurality of pixels. The timing controller supplies a clock training pattern over a data/clock signal line in a first time period, and supplies pixel/control data over the data/clock signal line in a second time period. The data driver generates a clock signal, using the clock training pattern, in the first period, and generate a plurality of data voltages based on the plurality of pixel data, using the clock signal, in the second period. The plurality of pixels receive the plurality of data voltages and emit corresponding light. During the second period, the data driver outputs a feedback signal to the timing controller indicating that the locking of the clock signal has failed. The timing controller re-supplies the clock training pattern in response to the feedback signal.
    Type: Grant
    Filed: July 26, 2018
    Date of Patent: September 1, 2020
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jae Han Lee, Myeong Su Kim, Sun Koo Kang, Bo Yeon Kim, Dong Won Park, Tae Gon Im, Jung Hwan Cho
  • Patent number: 10750148
    Abstract: An unevenness correction system according to the present invention includes a panel drive circuit provided with a gamma correction circuit that performs gamma correction on an image signal input to an input interface, a gamma correction information acquisition circuit that acquires a gamma correction signal obtained through gamma correction as gamma correction information, an unevenness correction circuit that performs an unevenness correction on the gamma correction signal based on correction data, and an output interface that externally outputs the gamma correction information, and an unevenness correction apparatus provided with a pattern generator that outputs the image signal of a predetermined image to the input interface, and a control unit that generates correction data based on gamma correction information of each individual display panel input to and read by a gamma correction information reading unit from the output interface regarding the output image signal.
    Type: Grant
    Filed: December 19, 2016
    Date of Patent: August 18, 2020
    Assignee: IIX INC.
    Inventors: Makoto Hatakenaka, Takashi Sakamoto, Keisuke Okada
  • Patent number: 10665143
    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: August 20, 2019
    Date of Patent: May 26, 2020
    Assignee: Ignis Innovation Inc.
    Inventors: Gholamreza Chaji, Yaser Azizi
  • Patent number: 10657901
    Abstract: Varying electrical currents are selectively applied to each pixel within an OLED display to create desired images. High applied electrical currents to groupings of nearby pixels create high luminance features, while low applied electrical currents to groupings of nearby pixels create low luminance features. A combination of a high luminance and low luminance features may be present on the OLED display. Pulse-width modulation (PWM) is often used to increase the current applied to the OLED display by modulating the applied current, particularly when creating low luminance features. The presently disclosed systems and methods detect a gray portion of an image to be presented, and select PWM independently of peak luminance based on the detected gray portion. The allows the OLED display to display low-luminance features at high quality, even when high-luminance features are also present within a frame.
    Type: Grant
    Filed: October 17, 2017
    Date of Patent: May 19, 2020
    Assignee: Microsoft Technology Licensing, LLC
    Inventors: Minhyuk Choi, Samu Matias Kallio, Ying Zheng
  • Patent number: 10650766
    Abstract: A semiconductor device with a small circuit area that consumes low power is provided. The semiconductor device includes a shift register, a sample-and-hold circuit, a first buffer circuit, and a second buffer circuit. The sample-and-hold circuit includes a first input terminal, a second input terminal, and an output terminal. An output terminal of the first buffer circuit is electrically connected to the first input terminal. The shift register is electrically connected to the second input terminal. An input terminal of the second buffer circuit is electrically connected to the output terminal of the sample-and-hold circuit. In the semiconductor device, the potential of an input analog signal is retained in the sample-and-hold circuit and the analog signal is output from an output terminal of the second buffer circuit.
    Type: Grant
    Filed: January 22, 2018
    Date of Patent: May 12, 2020
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Yoshiyuki Kurokawa, Takayuki Ikeda, Tatsunori Inoue
  • Patent number: 10614749
    Abstract: A source driver apparatus for a display panel includes source drivers and a slew rate controller. Each of the source drivers includes a data latch, a decoder, and an output buffer. The data latch is configured to hold sub-pixel data. The decoder is configured to decode the sub-pixel data held in the data latch to provide a driving signal. The output buffer has an adjustable slew rate and is configured to buffer the driving signal to provide a buffered driving signal. The slew rate controller is configured to analyze the sub-pixel data in the data latch in each of the source drivers and dynamically control the slew rate of the output buffer in each of the source drivers.
    Type: Grant
    Filed: February 8, 2018
    Date of Patent: April 7, 2020
    Assignee: MagnaChip Semiconductor, Ltd.
    Inventors: Hyoung Kyu Kim, Won Seok Lee, Jin Seok Yang, Dae Young Yoo
  • Patent number: 10607563
    Abstract: A display device includes a timing controller, a driver, and a display panel. The timing controller outputs a first clock signal having first rising time during an active section and a second clock signal having second rising time during a blank section adjacent to the active section. The driver generates a data signal based on the first clock signal and the second clock signal and to output the data signal. The display panel displays an image based on the data signal. The first rising time is shorter than the second rising time.
    Type: Grant
    Filed: February 14, 2017
    Date of Patent: March 31, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Dong In Kim, Jin Kyu Park, Yo Han Lee, Ki Hoon Choi, Hyun Seok Hong
  • Patent number: 10565935
    Abstract: A scan driving circuit for OLED and a display panel are provided. The scan driving circuit for OLED comprising a plurality of scan driving units connected in cascade. The scan driving units at each stages for receiving the stage transmission signal at previous-stage, the first scan signal at previous-stage, the first scan signal at next-stage, the first clock signal and the second clock signal, and outputting a stage transmission signal at current-stage, the first scan signal at current-stage, the second scan signal at current-stage and the third scan signal at current-stage, wherein duty cycle of the first clock signal and the second clock signal are difference. The invention could generating three types shift scanning signal required for pixel compensation circuit and solved the problem of threshold voltage drift, then reducing difference brightness of display and enhancing display effect.
    Type: Grant
    Filed: November 22, 2017
    Date of Patent: February 18, 2020
    Assignee: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd
    Inventor: Mian Zeng
  • Patent number: 10535311
    Abstract: A displaying method for a displaying apparatus having a liquid crystal display panel for displaying images thereon is used for displaying images in accordance with a periodic time sequence. The periodic time sequence includes a plurality of scanning time periods and a plurality of vertical blanking intervals. The scanning time periods and the vertical blanking intervals are staggered. The displaying method includes the steps of: providing a substantially identical frame image data by a control module of the displaying apparatus to the liquid crystal display panel for each scanning time period; and providing a back light by a backlight module of the displaying apparatus to the liquid crystal display panel after an end point of the first one of the scanning time periods. Therein, the back light has a light intensity. Further, the light intensity can be designed to be adjustable.
    Type: Grant
    Filed: July 11, 2016
    Date of Patent: January 14, 2020
    Assignee: BenQ Corporation
    Inventor: Hsin-Nan Lin
  • Patent number: 10431132
    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: November 29, 2018
    Date of Patent: October 1, 2019
    Assignee: Ignis Innovation Inc.
    Inventors: Gholamreza Chaji, Yaser Azizi
  • Patent number: 10403217
    Abstract: The present invention discloses a display panel and the driving method thereof. It divides the pixel electrodes of the display panel into multiple groups according to the light color allowed passing through. That is, each said pixel electrode allows the light with the same color to pass through; during one frame display, the data driver applies independent Gamma voltage to each said pixel electrode. After the gate driver drives the gate line connected with a group of the pixel electrodes, it drives the gate line connected with next group of the pixel electrodes in sequence, so that it can independently adjust the Gamma voltage applied to the pixels with different colors.
    Type: Grant
    Filed: July 10, 2015
    Date of Patent: September 3, 2019
    Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd
    Inventors: Jing Xu, Tai-jiun Hwang
  • Patent number: 10403224
    Abstract: A control method for charging time sharing in a display apparatus, which includes receiving image data including a plurality of pixel data signals corresponding to a plurality of display driving periods, each display driving period associated with pixel data signals of a respective row of the display apparatus, calculating a plurality of gray variations corresponding to the plurality of display driving periods according to the plurality of pixel data signals, adjusting the plurality of display driving periods to generate a plurality of adjusted display driving periods according to the plurality of gray variations, and generating a gate clock signal according to the plurality of adjusted display driving periods.
    Type: Grant
    Filed: August 10, 2016
    Date of Patent: September 3, 2019
    Assignee: NOVATEK Microelectronics Corp.
    Inventors: Chin-Hung Hsu, Han-Ying Chang, Yu-Shiuan Shen
  • Patent number: 10388243
    Abstract: The driving system for driving a display panel includes a timing controller and a source driving circuit. The source driving circuit includes a plurality of output channels and a plurality of shift registers respectively corresponding to the output channels. The plurality of shift registers are classified into a plurality of shift register series, among which a first shift register series includes a first shift register being as one end and a second shift register being as the other end, and a second shift register series includes a third shift register being as one end and a fourth shift register being as the other end. The timing controller is connected to the first shift register, the second shift register, the third shift register, and the fourth shift register, and transmits a first start pulse to the first shift register and a second start pulse to the third shift register.
    Type: Grant
    Filed: April 5, 2017
    Date of Patent: August 20, 2019
    Assignee: NOVATEK Microelectronics Corp.
    Inventors: Shu-Wei Chang, Chia-Chi Yu, Kuo-Jen Hsu
  • 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