Synchronizing Means Patents (Class 345/213)
  • Patent number: 11922854
    Abstract: A timing controller suitable for receiving image data and a timing signal from a host system and outputting output data to a data driving circuit may include a scrambler configured to output scrambled image data by scrambling the image data; a pattern detection unit configured to calculate a first unbalanced pattern count as a count of unbalanced patterns included in the image data and a second unbalanced pattern count as a count of unbalanced patterns included in the scrambled image data; and an output data determination unit configured to determine output data by using the first unbalanced pattern count and the second unbalanced pattern count.
    Type: Grant
    Filed: July 15, 2022
    Date of Patent: March 5, 2024
    Assignee: LX SEMICON CO., LTD.
    Inventor: You Jin Kwon
  • Patent number: 11917888
    Abstract: Cameras are located within the display area of a display. In-display cameras allow for thinner display bezels. In-display cameras allow for the creation of ultra-high resolution images. The ability to capture an object from multiple perspectives allows for holographic image recording and playback. Multiple views of an image can be captured with varying depths of focus, allowing an image's depth of field to be adjusted during post processing. In-display cameras can also be used for user authentication, touch detection and three-dimensional gesture recognition. Thermal sensors located within the display area allow for control of the display temperature, improved control over system performance, and compensation for micro-LED degradation that can occur due to aging or increased temperature. Microlens assemblies located above pixels can adjust the viewing cone angle of the display or a portion of the display and microassemblies located under individual pixels or pixel arrays can adjust a viewing angle.
    Type: Grant
    Filed: November 5, 2021
    Date of Patent: February 27, 2024
    Assignee: Intel Corporation
    Inventors: Ramon C. Cancel Olmo, Evrim Binboga, Vivek Paranjape, Satish Prathaban, Shantanu D. Kulkarni, Kunjal S. Parikh, Siddhartha Saxena
  • Patent number: 11908417
    Abstract: A gate driving circuit including a controller for providing a first carry signal to a control node, a first pull-up portion for outputting a first clock signal as a first gate signal in accordance with a signal provided to the control node, and a second pull-up portion for outputting a second clock signal with a phase that is different from the first clock signal as a second gate signal in accordance with the signal provided to the control node.
    Type: Grant
    Filed: April 25, 2022
    Date of Patent: February 20, 2024
    Assignee: Samsung Display Co., Ltd.
    Inventors: Kang Nam Kim, You Mee Hyun, Beom Jun Kim, Jong Hwan Lee, Sung Hoon Lim, Duc Han Cho
  • Patent number: 11900862
    Abstract: A display substrate and a display apparatus are provided. The display substrate includes a base substrate; sub-pixels arranged in an array and on the base substrate; data line groups on the base substrate; each data line group includes data lines, each of which is connected to one column of sub-pixels; data selectors on the base substrate and connected to the data line groups in a one-to-one correspondence; data lines in a same data line group are connected to a same data selector; and data selection signal lines, wherein different data selection signal lines output different data selection signals; and different data lines connected to a same data selector correspond to different data selection signal lines, respectively. The display panel provided may effectively reduce the resistance on the data selection signal lines, thereby reducing the delay of the data selection signals and further improving the charging uniformity of sub-pixels.
    Type: Grant
    Filed: August 18, 2021
    Date of Patent: February 13, 2024
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Jian Zhang, Zhen Wang, Deshuai Wang, Han Zhang, Wei Yan, Jian Sun
  • Patent number: 11900894
    Abstract: A display panel includes an amorphous silicon gate driver in which a lower voltage than the gate-off voltage output from the gate driver is applied to an adjacent stage as a low voltage transmission signal.
    Type: Grant
    Filed: January 12, 2023
    Date of Patent: February 13, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jae-Hoon Lee, Seung-Hwan Moon, Yong-Soon Lee, Young-Su Kim, Chang-Ho Lee, Whee-Won Lee, Jun-Yong Song, Yu-Han Bae
  • Patent number: 11893966
    Abstract: Systems and methods for improving operating characteristics of displays such as liquid crystal on silicon displays.
    Type: Grant
    Filed: August 19, 2022
    Date of Patent: February 6, 2024
    Assignee: Snap Inc.
    Inventors: Stephen John Hart, Rock Edward Kent, Howard V. Goetz, James L. Sanford, Nicholas W. Melena
  • Patent number: 11868564
    Abstract: Embodiments of the present disclosure relate to a touch controller, a touch sensing system, and a touch display device. Among data communication periods between the touch controller and a touch driving circuit, during the data communication period included in a period in which a system clock signal is not output, a level of a communication control signal is changed a plurality of times, thereby allowing the touch driving circuit to recognize an address start time point. Therefore, it is possible to reduce power consumption of the touch sensing system by reducing a period in which the system clock signal is output and to improve the efficiency of data communication of the touch sensing system by enabling normal data communication in a period in which the system clock signal is not output.
    Type: Grant
    Filed: October 14, 2022
    Date of Patent: January 9, 2024
    Assignee: LG Display Co., Ltd.
    Inventors: Sojung Jung, Youngwoo Jo
  • Patent number: 11869441
    Abstract: A driving controller divides a display panel into first and second display areas according to an operation mode, outputs a start signal indicating a start of one frame and a masking signal for indicating a start of the second display area, sets a basic driving frequency to a normal frequency when the operation mode is a normal frequency mode, sets the basic driving frequency to a frequency lower than the normal frequency when the operation mode is a multi-frequency mode, and outputs the start signal and the masking signal. The first display area operates at a first driving frequency and the second display area operates at a second driving frequency, and the scan driving circuit sequentially drives scan lines in synchronization with the start signal, and stops, in response to the masking signal, driving of some of the scan lines corresponding to the second display area.
    Type: Grant
    Filed: July 18, 2022
    Date of Patent: January 9, 2024
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hae-Kwan Seo, Woomi Bae, Youngha Sohn
  • Patent number: 11854492
    Abstract: A data driver includes a buffer module and at least two data processing paths. The buffer module is configured to synchronously output image data corresponding to at least two rows of sub-pixels. Each of the at least two data processing paths is connected to the buffer module and a set of data lines and is configured to synchronously output a data signal corresponding to the image data to the at least two rows of sub-pixels.
    Type: Grant
    Filed: September 23, 2022
    Date of Patent: December 26, 2023
    Assignee: WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD
    Inventors: Jinlong Zheng, Qiang Zang, Chunsheng Li, Jia Zhang
  • Patent number: 11854460
    Abstract: A shift register unit, a driving circuit, a display device, and a driving method are disclosed. The shift register unit includes a first input circuit, a second input circuit, an output circuit, a first control circuit, and a second control circuit. The first input circuit is electrically connected to a first node, and is configured to transmit an input signal to the first node; the second input circuit is electrically connected to the first node and a second node, and is configured to control a level of the second node; the first control circuit is electrically connected to the second node and a third node, and is configured to control a level of the third node; and the output circuit is electrically connected to the third node and an output terminal, and is configured to output an output signal to the output terminal.
    Type: Grant
    Filed: January 4, 2023
    Date of Patent: December 26, 2023
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Can Zheng
  • Patent number: 11842691
    Abstract: A display device including: first pixels connected to a first write line and a first compensation line; second pixels connected to a second write fine and a second compensation line; third pixels connected to a third write line and a third compensation line; fourth pixels connected to a fourth write line and a fourth compensation line; fifth pixels connected to a fifth write line and a fifth compensation line; sixth pixels connected to a sixth write line and a sixth compensation line; seventh pixels connected to a seventh write line and a seventh compensation line; and eighth pixels connected to an eighth write line and an eighth compensation line, the first to fourth compensation lines are connected to a first node, the fifth and sixth compensation lines are connected to a second node, the seventh and eighth compensation lines are connected to a third node.
    Type: Grant
    Filed: December 19, 2022
    Date of Patent: December 12, 2023
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Yong Sung Park, Dae Hyun Noh
  • Patent number: 11817048
    Abstract: The present technology relates to a signal processing apparatus, a signal processing method, and a display apparatus that are able to provide suitable functionality according to applications. The signal processing apparatus provided by the present technology includes a signal processing section that acquires at least one of first information regarding a color of a video to be displayed on a panel section, second information regarding brightness of a screen of the panel section, and third information measured as a physical quantity related to the panel section, and that performs, on the basis of the acquired information, adaptive control of a voltage according to a load on and an application of the panel section. The voltage is used for driving the panel section. The present technology is applicable, for example, to a self-luminous display apparatus.
    Type: Grant
    Filed: April 19, 2021
    Date of Patent: November 14, 2023
    Inventors: Masao Zen, Tetsuo Ikeyama, Daisuke Miki, Syunsuke Kikuchi, Kazuhiro Nukiyama, Kazutaka Kobayashi, Yasushi Konuma, Kazuki Uchida, Masayoshi Sasaki, Masayuki Okochi
  • Patent number: 11763775
    Abstract: The present disclosure relates to a technology for driving a display panel, wherein setting data for setting an environment of a high-speed communication is transmitted through a low-speed communication before performing a high-speed communication for image data, thereby reducing errors in the high-speed communication and increasing the communication speed.
    Type: Grant
    Filed: May 23, 2022
    Date of Patent: September 19, 2023
    Assignee: LX SEMICON CO., LTD.
    Inventors: Do Seok Kim, Yong Hwan Mun, Myung Yu Kim, Hyun Pyo Cho
  • Patent number: 11735117
    Abstract: A circuit stage including a first transistor including a first electrode and a gate electrode, the first electrode being coupled to a first input terminal and the gate electrode being coupled to a second input terminal configured to receive a first clock signal, an output circuit coupled to the second input terminal and a second power input terminal, an input circuit coupled to a second electrode of the first transistor and to a third input terminal, the third input terminal being configured to receive a first control clock signal, the input circuit being configured to control voltages of the second node and a third node, a first driving circuit coupled to a first power input terminal and to a fourth input terminal configured to receive a second control clock signal, and a second driving circuit coupled to the fourth input terminal and the third node.
    Type: Grant
    Filed: May 14, 2018
    Date of Patent: August 22, 2023
    Assignee: Samsung Display Co., Ltd.
    Inventors: Chul Kyu Kang, Yong Sung Park, Jin Woo Park, Dong Sun Lee
  • Patent number: 11721290
    Abstract: A gate driving circuit and a display device including the same are disclosed. The gate driving circuit includes signal transmitters receiving a start pulse, a shift clock, a charge/discharge clock, a back-bias clock, a high-potential driving voltage, and a low-potential reference voltage, and connected in a cascade structure. An Nth (N is a positive integer) signal transmitter of the signal transmitters includes a first control node; a second control node; a first controller controlling charging and discharging of the first control node by using at least one transistor to which the back-bias clock is inputted; a second controller controlling charging and discharging of the second control node; a first output buffer outputting a carry pulse in response to voltages of the first and second control nodes; and a second output buffer outputting a gate pulse.
    Type: Grant
    Filed: September 26, 2022
    Date of Patent: August 8, 2023
    Assignee: LG Display Co., Ltd.
    Inventors: Jae Sung Yu, Jae Hoon Park
  • Patent number: 11721268
    Abstract: Provided are a display panel and a display device. The display panel includes a driver circuit including N stages of cascaded shift registers, where N?2. Each shift register includes a first control part and a second control part. The second control part includes a first control unit and a second control unit. The first control unit is configured to receive a signal of a preset node and a first output control signal and control a signal of a fourth node, where the preset node is one of a second node or a third node. A first output control signal received by a shift register at an M1-th stage is a signal of the preset node of a shift register at an M2-th stage, where 1?M1?N, 1?M2?N, 1?|M1?M2|?i, and 2?i?N?1.
    Type: Grant
    Filed: November 16, 2021
    Date of Patent: August 8, 2023
    Assignee: Xiamen Tianma Micro-Electronics Co., Ltd.
    Inventors: Qingjun Lai, Yihua Zhu, Yong Yuan
  • Patent number: 11694652
    Abstract: Disclosed herein is a data interface device of a display apparatus including a timing controller, encoding clock-embedded image data corresponding to a logic high period of a data enable signal and clock-embedded blank data corresponding to a logic low period of the data enable signal and transferring an encoded data transfer packet to a transfer line, and a source integrated circuit generating an internal clock based on the encoded data transfer packet received through the transfer line and selectively decoding the clock-embedded image data based on the internal clock, wherein a transition pattern of the clock-embedded blank data differs in a plurality of transfer lines.
    Type: Grant
    Filed: July 29, 2021
    Date of Patent: July 4, 2023
    Assignee: LG Display Co., Ltd.
    Inventors: Yang Seok Jeong, Young Ho Kim, Dong In Noh
  • Patent number: 11688353
    Abstract: The present disclosure relates to a display device and a driving method thereof, wherein a refresh rate of pixels is controlled at a reference frame frequency in a normal driving mode, and the refresh rate of the pixels is controlled at a frequency lower than the reference frame frequency in a low speed driving mode. In the low speed driving mode, park data is transmitted to a data driving circuit during at least one vertical blank period.
    Type: Grant
    Filed: November 16, 2021
    Date of Patent: June 27, 2023
    Assignee: LG Display Co., Ltd.
    Inventors: Myung Kook Moon, Hae Jong Jang
  • Patent number: 11682354
    Abstract: A display device is disclosed that includes a display panel, a first source circuit board, a second source circuit board, and a control circuit board. The first source circuit board is configured to output a first feedback voltage corresponding to a first driving voltage. The second source circuit board is configured to output a second feedback voltage corresponding to the second driving voltage. The control circuit board is configured to supply the first and second driving voltages to the first and second source circuit boards, respectively, and receive the first and second feedback voltages from the first and second source circuit boards, respectively.
    Type: Grant
    Filed: November 4, 2022
    Date of Patent: June 20, 2023
    Assignee: Samsung Display Co., Ltd.
    Inventors: Kihyun Pyun, Hyunjoo Seo
  • Patent number: 11670226
    Abstract: A micro-light-emitting diode (microLED) display panel includes a timing controller, and a plurality of drivers controlled by the timing controller and arranged in an order according to distance from the timing controller. Each driver includes a buffer that buffers a signal before being sent to a succeeding driver.
    Type: Grant
    Filed: April 11, 2022
    Date of Patent: June 6, 2023
    Assignees: Prilit Optronics, Inc., Himax Technologies Limited
    Inventors: Biing-Seng Wu, Tzung-Ren Wang, Hsin-Hung Chen
  • Patent number: 11663990
    Abstract: A display apparatus which includes a driver with low power consumption and in which an output voltage of the driver is boosted by a pixel is provided. The source driver in which a logic unit and an amplifier unit operate appropriately by the same low voltage is included, and the pixel has a function of retaining first data, a function of adding second data to the first data to generate third data, and a function of supplying the third data to a display device. Thus, even when a voltage output from the source driver is low, the voltage can be boosted by the pixel; accordingly, the display device can operate appropriately.
    Type: Grant
    Filed: October 28, 2019
    Date of Patent: May 30, 2023
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Kouhei Toyotaka, Motoharu Saito
  • Patent number: 11663953
    Abstract: Provided are a driver chip, a display screen and a display device. The driver chip is configured to drive a silicon-based display screen, and the driver chip is composed of a bridge chip and a screen driver chip. A signal interface circuit of a first signal processing circuit in the bridge chip receives video signals of each frame of picture. A drive controller controls video signals of P pixels among the video signals of one frame of picture to be output at a first preset transmission speed to a second signal processing circuit of the screen driver chip each time. A signal processor of the second signal processing circuit in the screen driver chip converts the video signals of all of the P pixels into data drive signals and outputs at a second preset transmission speed data drive signals of Q pixels in one frame of picture to a data processing circuit each time.
    Type: Grant
    Filed: March 26, 2021
    Date of Patent: May 30, 2023
    Assignee: SEEYA OPTRONICS CO., LTD.
    Inventors: Ping-Lin Liu, Yanfu Huang, Zhenyong Gao
  • Patent number: 11657755
    Abstract: A display driving circuit configured to drive a display panel to display a video is provided. The display driving circuit includes a compensating circuit and a gamma voltage generating circuit. The compensating circuit is configured to receive a voltage compensating map of each frame of the video and a pixel line address. The compensating circuit determines a voltage compensating value of each pixel line according to the voltage compensating map of each frame and the pixel line address. The compensating circuit generates a compensated gamma curve of each pixel line. The gamma voltage generating circuit is coupled to the compensating circuit. The gamma voltage generating circuit is configured to generate a gamma voltage of each pixel line according to the compensated gamma curve.
    Type: Grant
    Filed: May 11, 2022
    Date of Patent: May 23, 2023
    Assignee: Novatek Microelectronics Corp.
    Inventor: Feng-Ting Pai
  • Patent number: 11657776
    Abstract: The present application discloses a driving method and a drive circuit of a display panel. The driving method includes the following steps: according to the distance from the data driving chip, the display panel is divided into a plurality of charging regions in advance, each charging area is provided with a unique digital code, and the corresponding information of the charging area and the digital code is stored in the timing control chip in advance; detecting a charging area where the pixel to be charged is located, and outputting a corresponding digital code according to the charging area by a timing control chip; the gamma chip receives the digital code and generates a gamma voltage corresponding to the digital code according to the input operating voltage to drive charging operation of the charging area corresponding to the digital code.
    Type: Grant
    Filed: December 13, 2018
    Date of Patent: May 23, 2023
    Assignee: HKC CORPORATION LIMITED
    Inventor: Mingliang Wang
  • Patent number: 11636803
    Abstract: A display device and a driving method therefor. The display device includes pixel units and pixel scanning circuits, and each of the pixel scanning circuits corresponds to the pixel units of a row. The driving method for the display device includes: driving, by a first driving signal corresponding to a first scanning frequency, the pixel scanning circuits, the first driving signal having row periods corresponding to a frame of image under the first scanning frequency; obtaining a switching signal, and driving, by a second driving signal corresponding to a second scanning frequency, the pixel scanning circuits according to the switching signal. The second driving signal has row periods corresponding to a frame of image under the second scanning frequency, the first scanning frequency is less than the second scanning frequency, and the row period of the first driving signal is greater than the row period of the second driving signal.
    Type: Grant
    Filed: March 1, 2022
    Date of Patent: April 25, 2023
    Assignee: Kunshan Go-Visionox Opto-Electronics Co., Ltd.
    Inventors: Yuan Yao, Shuai Ye, Guangyuan Sun, Wenyuan Xi
  • Patent number: 11605345
    Abstract: A display device includes a display region including pixel circuits, and a driver for outputting a control signal to the pixel circuits. The display region includes a first region and a second region having a lower pixel circuit density than the first region. The driver includes output buffers. Each of the output buffers simultaneously outputs the control signal to the pixel circuits. The output buffers include a first output buffer and a second output buffer. The number of the pixel circuits as output destinations of the control signal of the first output buffer is larger than the number of the pixel circuits as output destinations of the control signal of the second output buffer. A channel width of a drive transistor of the first output buffer is larger than that of a drive transistor of the second output buffer.
    Type: Grant
    Filed: December 1, 2021
    Date of Patent: March 14, 2023
    Assignee: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD.
    Inventor: Yojiro Matsueda
  • Patent number: 11605339
    Abstract: A display device includes a display panel including a plurality of sensing lines and a plurality of pixels each connected to a corresponding sensing line among the plurality of sensing lines, a sensor that senses characteristic information of the plurality of pixels through the plurality of sensing lines and converts the characteristic information into sensing data having a digital format, and a compensator that converts first data received from outside of the display device into second data based on the sensing data, wherein the sensor senses characteristic information of pixels arranged in a partial area of the display panel during a transition period of a sensing period and processes sensed characteristic information as dummy data.
    Type: Grant
    Filed: May 3, 2021
    Date of Patent: March 14, 2023
    Inventors: Boyeon Kim, Wheewon Lee, Wontae Kim, Jaehan Lee
  • Patent number: 11605353
    Abstract: The present disclosure relates to a display driver and a display device using the same. The display device according to the embodiment improves an effect of preventing leakage current of a data supply transistor by adaptively controlling and supplying, on the basis of a luminance value of an input data, a parking voltage which is applied in order to prevent the leakage current of the data supply transistor. The display driver comprises a controller which provides a clock signal swinging between a high level and a low level during a refresh frame in which a data voltage is written in a pixel, and provides a clock signal having a direct current voltage during a hold frame in which the data voltage written in the pixel is maintained; a data driver which supplies the data voltage to the pixel during the refresh frame in accordance with a data control signal of the controller; and a power supplier which supplies a parking voltage to the pixel during the hold frame.
    Type: Grant
    Filed: August 12, 2021
    Date of Patent: March 14, 2023
    Assignee: LG Display Co., Ltd.
    Inventors: WooKyu Sang, HyoungSik Kim, Dongkyu Lee
  • Patent number: 11600213
    Abstract: A display device includes a level shifter and a gate driving circuit that can reduce differences in characteristics among gate signals to improve image quality by controlling a signal waveform of a first clock signal of the m number of clock signals different from a signal waveform of an m-th clock signal when m number of gate signals is output by using m number of clock signals.
    Type: Grant
    Filed: December 6, 2021
    Date of Patent: March 7, 2023
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Sujin Hwang, MiYoung Son, EungKyu Kim, HongJae Shin, MinKyu Chang
  • Patent number: 11594184
    Abstract: A display substrate and a manufacturing method, and a display device are provided. The display substrate includes a base substrate including a display region and a periphery region; and a shift register unit, a first power line and a second power line; an orthographic projection of the first power line on the base substrate is on a side of an orthographic projection of the shift register unit on the base substrate closer to the display region, an orthographic projection of the second power line on the base substrate is on a side of the orthographic projection of the shift register unit on the base substrate away from the display region, and the orthographic projection of the shift register unit on the base substrate is between the orthographic projection of the first power line on the base substrate and the orthographic projection of the second power line on the base substrate.
    Type: Grant
    Filed: June 19, 2020
    Date of Patent: February 28, 2023
    Assignees: Chengdu BOE Optoelectronics Technology Co., Ltd., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yunsheng Xiao, Haigang Qing, Xiangdan Dong
  • Patent number: 11594186
    Abstract: A display device and a driving circuit are discussed. According to an embodiment of the present disclosure, it is possible to stably maintain the output signal of the driving circuit when the lock signal indicating the synchronization state of the clock signal is changed due to an operation error such as overcurrent in a display device using a point-to-point interface. In addition, according to an embodiment of the present disclosure, it is possible to prevent damage to the display panel due to an overload generated in the output signal of the driving circuit by an operation error. In addition, according to an embodiment of the present disclosure, it is possible to prevent overload of the driving circuit and damage to the display panel by controlling the operation of the driving circuit through a differential input voltage between the timing controller and the driving circuit.
    Type: Grant
    Filed: November 12, 2021
    Date of Patent: February 28, 2023
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Jinhee Jung, MooKyoung Hong
  • Patent number: 11587531
    Abstract: Technologies for power efficient display synchronization are disclosed. A compute device may be connected to two display devices. The compute device may send image data to be displayed on each of the display devices in a burst mode, sending the image data in less time than the time between frames. The compute device may then enter a low-power state prior to sending the next image to the display devices. Before sending the next image to the display devices, the compute device may send a synchronization signal, which the display devices may use to synchronize the timing of displaying images between the two display devices.
    Type: Grant
    Filed: September 27, 2018
    Date of Patent: February 21, 2023
    Assignee: Intel Corporation
    Inventors: Nausheen Ansari, Zhiming Zhuang
  • Patent number: 11580901
    Abstract: Techniques are described for portable computing devices and other apparatus that include an ambient light sensor. The techniques can be particularly advantageous for situations in which the ambient light sensor is disposed behind a display screen of a host device such that ambient light detected by the sensor passes through the light emitting display before being detected by the sensor.
    Type: Grant
    Filed: October 11, 2019
    Date of Patent: February 14, 2023
    Assignee: AMS AG
    Inventors: Timothy Cogan, Doug Nelson, Pradeep Hegde, James Archibald, Drew Paterson, George Richard Kelly, David Harlow Sin
  • Patent number: 11562674
    Abstract: Technology for a display source device is described. The display source device can receive a frame start indication from a display panel at a start of a frame. The display source device can align a timing of the display source device to a timing of the display panel based on the frame start indication received from the display panel to obtain frame-level synchronization between the display source device and the display panel. The display source device can send one or more frame update regions to the display panel in accordance with the timing of the display source device that is aligned to the timing of the display panel.
    Type: Grant
    Filed: December 23, 2020
    Date of Patent: January 24, 2023
    Assignee: Intel Corporation
    Inventors: Nausheen Ansari, Seh Kwa, Paul S. Diefenbaugh, Robert Johnston
  • Patent number: 11557364
    Abstract: Disclosed herein is logic circuitry and techniques for operation that hardware to enable the construction of first-in-first-out (FIFO) buffers from latches while permitting stuck-at-1 fault testing for the enable pin of those latches, as well as testing the data path at individual points through the FIFO buffer.
    Type: Grant
    Filed: July 27, 2021
    Date of Patent: January 17, 2023
    Assignee: STMicroelectronics International N.V.
    Inventors: Venkata Narayanan Srinivasan, Balwinder Singh Soni, Avneep Kumar Goyal
  • Patent number: 11538407
    Abstract: A display apparatus includes a display panel displaying an image based on input image data, a driving controller determining a low frequency driving mode and a normal driving mode based on the input image data, a gate driver outputting a gate signal, a data driver outputting a data voltage, and a power voltage generator outputting power voltages. The driving controller is configured to generate a writing frame in which data is written in a pixel of the display panel and a holding frame in which the written data is maintained without writing data in the pixel in the low frequency driving mode. The driving controller is configured to operate at least one of the driving controller, the data driver, and the power voltage generator in a power reducing mode during the holding frame.
    Type: Grant
    Filed: January 10, 2020
    Date of Patent: December 27, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hyojin Lee, Eunho Lee, Jinyoung Roh, Sehyuk Park, Bong Hyun You
  • Patent number: 11538401
    Abstract: Provided are a display panel, a driving method thereof and a display device. The display panel includes a pixel circuit and a light-emitting element. The pixel circuit includes a data write module, a drive module and a compensation module. The data write module is configured to selectively provide a data signal for the drive module. The drive module is configured to provide a drive current for the light-emitting element and includes a drive transistor. The compensation module is configured to compensate for the threshold voltage of the drive transistor. The operation of the pixel circuit includes a bias stage. During the bias stage, the data write module and the drive module are on, the compensation module is off, and the data signal is written to the drain of the drive transistor to adjust the bias state of the drive transistor.
    Type: Grant
    Filed: August 18, 2021
    Date of Patent: December 27, 2022
    Assignee: XIAMEN TIANMA MICRO-ELECTRONICS CO., LTD.
    Inventor: Yong Yuan
  • Patent number: 11532275
    Abstract: A display device including: first pixels connected to a first write line and a first compensation line; second pixels connected to a second write line and a second compensation line; third pixels connected to a third write line and a third compensation line; fourth pixels connected to a fourth write line and a fourth compensation line; fifth pixels connected to a fifth write line and a fifth compensation line; sixth pixels connected to a sixth write line and a sixth compensation line; seventh pixels connected to a seventh write line and a seventh compensation line; and eighth pixels connected to an eighth write line and an eighth compensation line, the first to fourth compensation lines are connected to a first node, the fifth and sixth compensation lines are connected to a second node, the seventh and eighth compensation lines are connected to a third node.
    Type: Grant
    Filed: November 19, 2020
    Date of Patent: December 20, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Yong Sung Park, Dae Hyun Noh
  • Patent number: 11514831
    Abstract: An electronic device according to various embodiments may comprise: a display; a processor; a memory; and a display drive circuit for driving the display panel, wherein the display drive circuit is configured to: receive first frame data including at least a part of a second content from the processor while a first content is displayed using the display panel; keep from storing the received first frame data in the memory at least temporarily for a designated period of time; receive second frame data including at least a part of the second content from the processor after the designated period of time; store the received second frame data in the memory; and display the second content on the display panel according to the second frame data.
    Type: Grant
    Filed: February 22, 2019
    Date of Patent: November 29, 2022
    Assignee: Samsung Electronics CO., LTD.
    Inventors: Jongkon Bae, Yohan Lee, Yunpyo Hong, Dongkyoon Han
  • Patent number: 11468822
    Abstract: A timing control board includes a point-to-point interface, a plurality of storage modules and a timing controller. The point-to-point interface is for connecting a source drive circuit board and performing point-to-point signal transmission. The storage modules each stores a set of point-to-point configuration parameters. The timing controller receives a configuration parameter feedback signal from the source drive circuit board, and outputs a corresponding chip selection signal to the storage modules according to the configuration parameter feedback signal, to obtain a set of point-to-point configuration parameters matching a protocol type of the source drive circuit board from the storage modules, and initialize setting according to the point-to-point configuration parameters to generate matched data signals and clock signals and output the data signals and clock signals to the source drive circuit board through the point-to-point interface.
    Type: Grant
    Filed: February 1, 2021
    Date of Patent: October 11, 2022
    Assignees: CHONGQING HKC OPTOELECTRONICS TECHNOLOGY CO., LTD., HKC CORPORATION LIMITED
    Inventors: Feilin Ji, Wei Li
  • Patent number: 11468861
    Abstract: A display panel and driving method, and a display device are provided. The display panel includes a display region and a border region. The display region includes a plurality of data lines extending along a first direction. The border region includes a data output circuit, having an output end electrically connected to a data line. The data output circuit includes at least one gating circuit group and 2L first-gating circuits, where L is a positive integer, and L?1. One gating circuit group is electrically connected to M data lines, and one first-gating circuit is electrically connected to N data lines, where M=N?2, and M and N are positive integers, respectively. Each gating circuit group includes a plurality of second-gating circuits, and each second-gating circuit is electrically connected to P data lines, where N>P?1, and P is a positive integer.
    Type: Grant
    Filed: April 30, 2020
    Date of Patent: October 11, 2022
    Assignee: Xiamen Tianma Micro-Electronics Co., Ltd.
    Inventors: Peng Zhang, Xinzhao Liu
  • Patent number: 11462174
    Abstract: Disclosed herein is a display apparatus including a display panel displaying an image and a scan driver including a one-side stage disposed at one side of the display panel and an other-side stage disposed at the other side of the display panel, wherein each of the one-side stage and the other-side stage includes at least two output terminals, and a first output terminal of the one-side stage and a second output terminal of the other-side stage shares one scan line disposed in the display panel.
    Type: Grant
    Filed: May 12, 2021
    Date of Patent: October 4, 2022
    Assignee: LG Display Co., Ltd.
    Inventor: Tae Keun Lee
  • Patent number: 11455926
    Abstract: A drive control method, assembly, and a display device. The method is applied to a timer controller. The method comprises: generating a point-to-point configuration instruction that comprises n configuration data where n?2; sending the point-to-point configuration instruction to a first source driver chip through a first signal line, the first source driver chip being any one of a plurality of source driver chips; and receiving a configuration response instruction sent by the first source driver chip according to the point-to-point configuration instruction through the first signal line, the configuration response instruction comprising configuration response data for each of the n configuration data.
    Type: Grant
    Filed: November 20, 2018
    Date of Patent: September 27, 2022
    Assignees: Beijing BOE Display Technology Co., Ltd., Beijing BOE Technology Development Co., Ltd.
    Inventors: Shuhuan Yu, Xin Duan, Hsinchung Lo
  • Patent number: 11450270
    Abstract: A pixel circuit and a method of driving the same, and a display device. The pixel circuit includes a plurality of pixel compensation circuits, and each pixel compensation circuit can be connected to M light-emitting units located in the same column. Each light-emitting control signal terminal of the M light-emitting control signal terminals included in each light-emitting control signal terminal group may be connected to a pixel compensation circuit group (i.e., K rows of pixels compensation circuits).
    Type: Grant
    Filed: January 25, 2019
    Date of Patent: September 20, 2022
    Assignee: Beijing BOE Technology Development Co., Ltd.
    Inventors: Liang Chen, Lei Wang, Dongni Liu, Li Xiao, Minghua Xuan, Xiaochuan Chen, Shengji Yang, Pengcheng Lu, Detao Zhao, Ning Cong
  • Patent number: 11443690
    Abstract: Disclosed is an electronic device comprising at least one sensor, a communication circuit, a display, and at least one processor operationally connected to the display, wherein the at least one processor is configured to: display, on the display, a watch screen including a fixed element displayed at a designated location on the display, a repetitive element displayed on the basis of at least a designated rule, and a changing element associated with information obtained through the at least one sensor or received through the communication circuit; generate first data on the basis of at least one of the designated rule or the shape of the repetitive element; generate second data based on at least one of the fixed element or the changing element, in response to the changing element changing from a first value to a second value; and generate first deterioration information on the basis of the first data, the second data, and the duration over which the changing element maintains the first value.
    Type: Grant
    Filed: June 4, 2019
    Date of Patent: September 13, 2022
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Yohan Lee, Seungkyu Choi, Yunpyo Hong, Hanyuool Kim, Jongkon Bae, Younghee Ha, Dongkyoon Han
  • Patent number: 11430385
    Abstract: A pixel compensation circuit including a first transistor, a second transistor, a third transistor, a fourth transistor, a fifth transistor, a sixth transistor, a first capacitor, a second capacitor, and an organic light-emitting diode, each of the first transistor to the sixth transistor including a drain, a source and a gate.
    Type: Grant
    Filed: August 2, 2018
    Date of Patent: August 30, 2022
    Assignee: INSTITUTE OF MICROELECTRONICS, CHINESE ACADEMY OF SCIENCES
    Inventors: Di Geng, Yue Su, Ling Li, Nianduan Lu, Ming Liu
  • Patent number: 11430387
    Abstract: In a display device that performs external compensation, pixel circuits are classified into specific and general pixel circuits. When display is restarted, a current measurement circuit, along with a drive circuit, measures a current flowing through a drive transistor in the specific pixel circuit as a first current. A correction circuit obtains a recovery ratio for a characteristic of the drive transistor on the basis of an amount of the first current and corrects a video signal for each of the specific and general pixel circuits using the recovery ratio. Thus, when display is restarted, a suitably compensated image is displayed.
    Type: Grant
    Filed: March 29, 2019
    Date of Patent: August 30, 2022
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Hiroyuki Furukawa, Masafumi Ueno, Chie Toridono
  • Patent number: 11394372
    Abstract: This application relates to a wide band gap (WBG) power semiconductor system. In one aspect, the system includes a controller configured to generate a switching control signal and a gate driver configured to receive the switching control signal and generate a switching drive signal in response to the switching control signal. The system also includes a WBG power semiconductor device coupled to the gate driver, comprising a gate terminal for receiving the switching drive signal, and configured to be switched in response to the switching drive signal. The switching drive signal has one of three signal levels: a first voltage level higher than a zero voltage level, a second voltage level lower than the zero voltage level, and the zero voltage level at an arbitrary instant. As a result, the gate driver drives the WBG power semiconductor device with the three voltage levels.
    Type: Grant
    Filed: November 9, 2020
    Date of Patent: July 19, 2022
    Assignee: Korea Electronics Technology Institute
    Inventors: Dongmyoung Joo, Junhyuk Choi, Joonsung Park, Jinhong Kim, Byongjo Hyon, Yongsu Noh
  • Patent number: 11368650
    Abstract: A system includes a downstream facing port (DFP) coupled to a video source, an upstream facing port (UFP) coupled to a video sink, and a cable. The cable includes a first end that is connected to the DFP and a second end that is connected to the UFP. The cable is configured to carry a differential auxiliary transmission signal and detect polarity in the differential auxiliary transmission signal.
    Type: Grant
    Filed: December 10, 2020
    Date of Patent: June 21, 2022
    Assignee: TEXAS INSTRUMENTS INCORPORATED
    Inventors: Charles Michael Campbell, Anwar Sadat, Mark Edward Wentroble
  • Patent number: 11355087
    Abstract: A method for displaying graphical content in a playback device (DISP), the graphical content being displayed and erased periodically on the display device according to successive cycles that take place at a predetermined frequency (Fd) and in that the successive display periods each have a duration (T1) comprised in an interval of values ranging from 15 to 30% of the duration (T) of the cycles that have taken place.
    Type: Grant
    Filed: August 3, 2018
    Date of Patent: June 7, 2022
    Assignees: Université de Rennes 1
    Inventors: Albert Le Floch, Guy Ropars