Regulating Means Patents (Class 345/212)
  • Patent number: 11568827
    Abstract: A variety of methods for driving electro-optic displays so as to reduce visible artifacts are described. Such methods includes updating a display having a plurality of display pixels with a first image, identifying display pixels with edge artifacts after the first image update, and storing the identified display pixels information in a memory. In particular, the methods are effective for minimizing edge ghosting when a pixel of an active matrix electrophoretic display undergoes a white to white transition or a black to black transition during an update between first and second images.
    Type: Grant
    Filed: July 26, 2022
    Date of Patent: January 31, 2023
    Assignee: E Ink Corporation
    Inventors: Teck Ping Sim, Yuval Ben-Dov, Joanna F. Au, Kenneth R. Crounse
  • Patent number: 11560086
    Abstract: Proposed is a detachable traveling guidance system including a frame detachably mounted on a roof of a vehicle, a monitoring module including a sensor array configured to monitor a vicinity of the vehicle and a communicator, the monitoring module being mounted on the frame, and the frame being configured to adjust a position of the monitoring module, and a display mounted on a lower portion of the frame and positioned to cover a side surface or a rear surface of the vehicle, necessary information being output on the display device for viewing from the outside.
    Type: Grant
    Filed: November 18, 2021
    Date of Patent: January 24, 2023
    Assignee: HYUNDAI MOBIS CO., LTD.
    Inventor: Yong Kwan Ji
  • Patent number: 11545067
    Abstract: A display apparatus including: a display panel configured to display an image based on input image data; a data driver configured to output a data voltage to the display panel; and a driving controller configured to determine a driving frequency of the display panel based on flicker values for grayscale values of the input image data and output a driving frequency signal representing the driving frequency of the display panel to a host.
    Type: Grant
    Filed: November 8, 2021
    Date of Patent: January 3, 2023
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hyo Jin Lee, Jae Keun Lim, Hong Soo Kim, Jinyoung Roh, Sehyuk Park
  • Patent number: 11538438
    Abstract: An electronic device according to various embodiments may include a display panel, a Display Driving Integrated Circuit (DDIC) operatively coupled to the display panel, and a processor operatively coupled to the DDIC. The DDIC may be configured to receive, from the processor, a signal indicating that a first resolution is to be converted to a second resolution while displaying an image at the first resolution through the display panel, based on a horizontal synchronization signal including a first porch interval, change a length of the porch interval in response to the reception, and display the image at the second resolution through the display panel, based on the horizontal synchronization signal including the porch interval having the changed length.
    Type: Grant
    Filed: September 19, 2019
    Date of Patent: December 27, 2022
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jongkon Bae, Hojin Kim, Yohan Lee, Yunpyo Hong, Donghui Kim, Eunsook Seo, Dongkyoon Han
  • Patent number: 11526324
    Abstract: A smart mirror system is provided, comprising a mirror, a camera, and a processor in communication with the camera and the mirror. In use, an image of a face is received for performing facial recognition. Based on the facial recognition, at least one of a plurality of users of the mirror is identified, for tailoring operation of the mirror for the at least one user.
    Type: Grant
    Filed: March 24, 2022
    Date of Patent: December 13, 2022
    Inventor: Ryland Stefan Zilka
  • Patent number: 11527202
    Abstract: A display device according to an exemplary embodiment includes: a display panel including a plurality of pixels; a plurality of source boards connected to the display panel; a power control board connected to the source board and configured to supply a power voltage to the plurality of pixels; and a control board configured to control an output of voltages supplied to the source board according to a control signal transmitted by the power control board.
    Type: Grant
    Filed: August 15, 2019
    Date of Patent: December 13, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Kyun Ho Kim, Jong-Keun Kim, Min Young Park, Jong Min Shim
  • Patent number: 11527217
    Abstract: A display panel including a first current source and a first pixel unit is provided. The first pixel unit includes a first switch and a first light-emitting diode. The first switch is coupled to the first current source and receives a first scan signal. When the first scan signal is enabled, the first switch is turned on and receives a first current provided by the first current source. The first light-emitting diode is coupled to the first switch. When the first switch is turned on, the first current passes through the first light-emitting diode to turn on the first light-emitting diode.
    Type: Grant
    Filed: June 23, 2017
    Date of Patent: December 13, 2022
    Assignee: INNOLUX CORPORATION
    Inventors: Geng-Fu Chang, Tsau-Hua Hsieh, Jui-Feng Ko, Tung-Kai Liu, Hirofumi Watsuda
  • Patent number: 11521529
    Abstract: An electrostatic ignition protection method of a source driver of a display device and a display device are provided. When a time controller detects that a source driver has static electricity, the time controller controls the source driver not to output a driving signal for a preset duration and the preset duration is greater than an ignition threshold duration. This prevents the source driver having static electricity from accumulating enough heat in a short time to burn and fire.
    Type: Grant
    Filed: April 3, 2020
    Date of Patent: December 6, 2022
    Assignee: TCL China Star Optoelectronics Technology Co., Ltd.
    Inventor: Guangxing Xiao
  • Patent number: 11508309
    Abstract: A display may include an array of pixels. Each pixel in the array may include a drive transistor, emission transistors, a data loading transistor, a gate voltage setting transistor, an initialization transistor, an anode reset transistor, a storage capacitor, and an optional current boosting capacitor. A data refresh may include a initialization phase, a threshold voltage sampling phase, and a data programming phase. The threshold voltage sampling phase can be substantially longer than the data programming phase to decrease a current sampling level during the threshold voltage sampling phase, which helps reduce the display luminance sensitivity to temperature variations.
    Type: Grant
    Filed: May 11, 2021
    Date of Patent: November 22, 2022
    Assignee: Apple Inc.
    Inventors: Chin-Wei Lin, Shinya Ono, Zino Lee
  • Patent number: 11508317
    Abstract: A display device includes a display unit which includes pixels, an emission driver which applies an emission control signal for allowing the pixels to emit light, and a signal controller which receives a data enable signal including an active period and a blank period during which an image signal is inputted and outputs a control signal for controlling the emission driver such that an emission period of the pixels is changed in response to a blank period.
    Type: Grant
    Filed: May 20, 2021
    Date of Patent: November 22, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Tae-Seok Ha, Kyoung Soo Kim, Kyu-Jin Park, Seung-Woon Shin, Woon-Rok Jang
  • Patent number: 11508318
    Abstract: A light emitting display device includes: a first driving transistor; a first anode electrically connected to the first driving transistor; a first capacitor electrically connected to a gate electrode of the first driving transistor; a second driving transistor disposed to be adjacent to the first driving transistor; a second anode electrically connected to the second driving transistor; a second capacitor electrically connected to a gate electrode of the second driving transistor; a driving voltage line which applies a driving voltage to the first driving transistor and the second driving transistor; and a first connecting member electrically connecting the gate electrode of the first driving transistor and the first capacitor, where the driving voltage line is disposed between the first connecting member and the second anode in a plan view.
    Type: Grant
    Filed: August 13, 2021
    Date of Patent: November 22, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Yoo Mi Ra, Kyung-Ho Park
  • Patent number: 11509400
    Abstract: An image transmission system is disclosed. The image transmission system includes at least one image capturing device, at least one conversion device, at least one image processor, and at least one flexible printed circuit (FPC). The at least one FPC includes at least one conductive layer and at least one optical waveguide layer. The at least one image capturing device is configured to capture at least one data. The at least one conversion device is configured to perform a conversion between the at least one data and an optical signal. The at least one image processor is configured to obtain the at least one data according to the optical signal, and processes the data. The at least one optical waveguide layer is configured to transmit the optical signal.
    Type: Grant
    Filed: November 13, 2020
    Date of Patent: November 22, 2022
    Assignee: AuthenX Inc.
    Inventors: Po-Kuan Shen, Chao-Chieh Hsu, Chun-Chiang Yen, Chiu-Lin Yu, Kai-Lun Han, Sheng-Fu Lin, Jenq-Yang Chang, Mao-Jen Wu
  • Patent number: 11509224
    Abstract: A circuit includes a first passive device between supply and bias nodes, a first switching device and a second passive device between the bias and a reference node, a transistor between the supply and an output node, a third passive device and a second switching device between the output and a feedback node, a fourth passive device between the feedback and reference nodes, a third switching device between the supply and output nodes, and an amplifier controlling the transistor based on bias node and feedback node voltages. In a first mode, the first and second switching devices are off, the third switching device is on, and the supply node receives a first voltage level. In a second mode, the first and second switching devices are on, the third switching device is off, and a second voltage level greater than the first voltage level is received on the supply node.
    Type: Grant
    Filed: April 23, 2021
    Date of Patent: November 22, 2022
    Assignees: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD., TSMC CHINA COMPANY, LIMITED
    Inventors: Wei Li, Yongliang Jin, Yaqi Ma
  • Patent number: 11497096
    Abstract: A source driver includes at least one data input terminal, a plurality of data output terminals, at least two control terminals and a plurality of source driving circuits. Each source driving circuit is connected to a data input terminal of the at least one data input terminal, a data output terminal of the plurality of data output terminals and the at least two control terminals. The source driving circuit is configured such that: the source driving circuit converts a format of a data signal from the data input terminal; and in response to one of different control signals that is received by all the at least two control terminals, the source driving circuit has a corresponding different output impedance, and transmits the converted data signal to the data output terminal.
    Type: Grant
    Filed: August 11, 2020
    Date of Patent: November 8, 2022
    Assignees: HEFEI BOE DISPLAY TECHNOLOGY CO., LTD., BEIJING BOE TECHNOLOGY DEVELOPMENT CO., LTD.
    Inventors: Jianwei Sun, Liugang Zhou, Ke Dai, Yizhan Han, Yulong Xiong, Tao Li, Xiaofeng Yin, Maoyang Zhu, Pengjun Fang
  • Patent number: 11488530
    Abstract: The present application provides a pixel circuit, a driving method thereof and a display device. An anti-leakage transistor is added between the gate of the driving transistor and the initialization transistor and between the gate of the driving transistor and the compensation transistor. The anti-leakage transistor includes an active layer with oxide semiconductor. Low leakage property of a metal oxide transistor is utilized to suppress potential changes of the gate of the driving transistor during a light-emitting diode emits light.
    Type: Grant
    Filed: September 17, 2020
    Date of Patent: November 1, 2022
    Assignee: WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
    Inventors: Xuanyun Wang, Sunghwan Cho, Chao Dai
  • Patent number: 11487309
    Abstract: The present application discloses a reference voltage generation system and method. The reference voltage generation system includes: a reference voltage generator; and a voltage division circuit coupled to the reference voltage generator. The reference voltage generator is coupled to a reference voltage through the voltage division circuit.
    Type: Grant
    Filed: October 31, 2018
    Date of Patent: November 1, 2022
    Assignees: HKC CORPORATION LIMITED, CHONGQING HKC OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Xiaoyu Huang
  • Patent number: 11488540
    Abstract: The disclosure relates to the field of display technology and proposes a shift register, a driving method thereof, a gate driving circuit, and a display panel. The shift register includes a shift register circuit and a data processing circuit. The shift register circuit is configured to output a first shift signal to a first output terminal. The data processing circuit is connected to the first output terminal and a second output terminal, and configured to output a second shift signal to the second output terminal according to the first shift signal of the first output terminal. The second shift signal can be used as other driving signals in the pixel driving circuit, thereby avoiding a need to provide additional driving circuits and signal lines corresponding to the driving signal.
    Type: Grant
    Filed: January 13, 2021
    Date of Patent: November 1, 2022
    Assignees: Chengdu BOE Optoelectronics Technology Co., Ltd., Beijing BOE Technology Development Co., Ltd.
    Inventor: Qian Hu
  • Patent number: 11488541
    Abstract: A system and method for determining the current of a pixel circuit and an organic light emitting diode (OLED). The pixel circuit is connected to a source driver by a data line. The voltage (or current) supplied to the pixel circuit by the source driver. The current of the pixel and the OLED can be measured by a readout circuit. A value of a voltage from the measured current can be extracted and provided to a processor for further processing.
    Type: Grant
    Filed: March 18, 2021
    Date of Patent: November 1, 2022
    Assignee: IGNIS INNOVATION INC.
    Inventors: Jafar Talebzadeh, Ray Leerentveld
  • Patent number: 11482170
    Abstract: The display panel includes: a base substrate; a silicon semiconductor layer, the silicon semiconductor layer including active silicon layers of a driving transistor and an initialization transistor, each of the active silicon layers being provided with a first region, a second region and a first channel region therebetween; a first insulating layer, a first conducting layer, a second insulating layer and an oxide semiconductor layer, the oxide semiconductor layer including an active oxide layer of a voltage stabilizing transistor, the oxide semiconductor layer being provided with a third region, a fourth region and a second channel region therebetween. In the same sub-pixel, the second region of the active silicon layer of the initialization transistor is electrically connected to the third region, and the fourth region is electrically connected to a gate electrode of the driving transistor.
    Type: Grant
    Filed: May 9, 2020
    Date of Patent: October 25, 2022
    Assignee: BOE Technology Group Co., Ltd.
    Inventors: Yu Feng, Libin Liu, Lujiang Huangfu
  • Patent number: 11482177
    Abstract: There are provided a gate driver and a display device including the same. The gate driver includes: a first scan driver; a first sensing driver; a first scan clock line; and a first sensing clock line. The first scan clock line includes a first scan clock main line extending in one direction, and a first scan clock connection line connected to the first scan clock main line and the first scan driver. The first sensing clock line includes a first sensing clock main line extending in one direction, and a first sensing clock connection line connected to the first sensing clock main line and the first sensing driver. The first scan clock main line is closer to each of the first scan driver and the first sensing driver than the first sensing clock main line.
    Type: Grant
    Filed: February 22, 2021
    Date of Patent: October 25, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jun Hyun Park, Dong Woo Kim, An Su Lee, Kang Moon Jo
  • Patent number: 11482185
    Abstract: A method for driving a display device capable of appropriately performing idle driving even when timing information is not transmitted to a liquid crystal module in advance is provided. In a case where, in one vertical period, a non-scanning period other than a scanning period in which a screen of a display unit is scanned once is set to a pause period, a liquid crystal module delays supply of a data signal to the display unit by a recovery period during which a source driver is recovered from a sleep state to an active state in the pause period.
    Type: Grant
    Filed: July 25, 2018
    Date of Patent: October 25, 2022
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Yuta Tanaka, Kazuo Nakamura, Kazuki Takahashi, Jin Miyazawa
  • Patent number: 11482183
    Abstract: A display device may include a data driver that outputs a previous data voltage and a current data voltage, respectively, at an output terminal, to be applied to a pixel of a display panel in respective time intervals. A switch is controlled to open and close a circuit path between the output terminal and a data line coupled to the pixel. A capacitor stores an overdriving voltage. At least one further switch selectively applies the overdriving voltage to the data line from the capacitor when the circuit path is open and thereby enables a rapid transition of a voltage level of the data line between the previous and current data voltages, when the current and previous data voltages are to differ by more than a predetermined amount. As an example, the rapid transition between the previous and current data voltages may serve to minimize a color mixture phenomenon between pixels connected to a common data line and representing different colors.
    Type: Grant
    Filed: May 4, 2021
    Date of Patent: October 25, 2022
    Assignee: SAMSUNG DISPLAY GO., LTD.
    Inventors: Boyeon Kim, Wontae Kim, Taegon Im
  • Patent number: 11482187
    Abstract: Disclosed herein is a driver integrated circuit (IC), which can be miniaturized and includes a plurality of circuits, including a first substrate, a first circuit driven at a first level voltage and mounted on the first substrate, a second substrate bonded to the first substrate, and a second circuit including one or more sub-circuits driven at a second level voltage that is higher than the first level voltage, wherein at least one among the one or more sub-circuits is mounted on the second substrate.
    Type: Grant
    Filed: January 4, 2022
    Date of Patent: October 25, 2022
    Assignee: SILICON WORKS CO., LTD.
    Inventor: Kee Joon Choi
  • Patent number: 11475863
    Abstract: A display driving device and an anti-interference method thereof are provided. A timing controller outputs a data signal. A source driver detects an interference event according to the data signal, and outputs a feedback signal to the timing controller in response to the detection result of the interference event. The timing controller adjusts the signal strength of the data signal according to the feedback signal.
    Type: Grant
    Filed: June 7, 2020
    Date of Patent: October 18, 2022
    Assignee: HIMAX TECHNOLOGIES LIMITED
    Inventors: Peng-Chi Chen, Mong-Hua Tu, Chih-Hsiang Lin
  • Patent number: 11475835
    Abstract: A display device includes a plurality of pixels. Each pixel includes a first transistor that controls an amount of current received from a first power supply voltage line connected via a second node to an organic light emitting diode in response to a voltage of a first node, a second transistor connected between a data line and the second node and that includes a first gate electrode connected to a first scan line, a light emitting line connected to a gate electrode of at least one light emitting transistor located in a current path between the first power supply voltage line and the organic light emitting diode, and a seventh transistor connected between one of at least one second gate electrode of the second transistor and the light emitting line. Accordingly, a threshold voltage of a switching transistor included in each of the plurality of pixels may be negatively shifted.
    Type: Grant
    Filed: April 9, 2021
    Date of Patent: October 18, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hyo Jung Kim, Tae Young Kim, Yong Sung Park, Jong Woo Park, Mi Seon Seo, Keun Soo Lee, Ki Ju Im, Dae Youn Cho, Young Tae Choi, Hyun Cheol Hwang
  • Patent number: 11475861
    Abstract: A display device includes a timing controller, a scan driver, a data driver, and a display unit. The timing controller generates a clock signal, a start signal, and image data. The scan driver includes a plurality of stages for sequentially outputting the clock signal as a scan signal in response to the start signal. The data driver generates a data signal using the image data. The display unit includes pixels for emitting light with a luminance corresponding to the data signal in response to the scan signal. The timing controller performs masking on the clock signal in a part of a first frame period during which the scan driver sequentially outputs the scan signal.
    Type: Grant
    Filed: February 28, 2020
    Date of Patent: October 18, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Won Tae Kim, Hae Kwan Seo
  • Patent number: 11475838
    Abstract: A display apparatus includes a display panel including a pixel to display an image based on input image data, a driving controller which determines a driving frequency of a first display area of the display panel to be a first driving frequency and determines a driving frequency of a second display area of the display panel to be a second driving frequency less than the first driving frequency when the first display area displays a moving image and the second display area of the display panel displays a still image, and an emission driver which outputs a moving image emission signal corresponding to the first driving frequency and a still image emission signal corresponding to the second driving frequency to the display panel. A width of a non-emission period of the still image emission signal is greater than a width of a non-emission period of the moving image emission signal.
    Type: Grant
    Filed: May 24, 2021
    Date of Patent: October 18, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Soon-Dong Kim, Sangan Kwon, Taehoon Kim, Hui Nam, Junheyung Jung
  • Patent number: 11475818
    Abstract: Provided are a display panel, a display device and a driving method of the display panel. In the same row of pixel units, first control terminals of data write modules of sub-pixels having a first color are connected to the same first scanning line; and in the same row of pixel units, first control terminals of data write modules of sub-pixels having other colors except the first color are connected to the same second scanning line. The data write module is configured to provide a data signal cached by a data line for the drive transistor. In the same row of the pixel units, within time of one frame of a picture, time of providing data signals for data lines connected to sub-pixels having the first color is within time of writing data signals cached by data lines into pixel circuits of sub-pixels having the other colors.
    Type: Grant
    Filed: April 21, 2021
    Date of Patent: October 18, 2022
    Assignees: WUHAN TIANMA MICROELECTRONICS CO., LTD, WUHAN TIANMA MICROELECTRONICS CO., LTD. SHANGHAI BRANCH
    Inventors: Yana Gao, Xingyao Zhou, Mengmeng Zhang, Zhi Liu, Kang Yang
  • Patent number: 11468856
    Abstract: A driving method is configured to drive a display device, and the display device includes a display array and a light valve array. The display array includes rows of sub-pixels, the light valve array includes a plurality of sub light valves, a respective one sub light valve of the plurality of sub light valves corresponds to at least one row of sub-pixels, and the light valve array is on a light-emitting side of the display array. The driving method includes: any sub-pixel in the at least one row of sub-pixels being in a response phase of a display operation, the respective one sub light valve being in a light-shielding state, and the respective one sub light valve corresponding to the at least one row of sub-pixels.
    Type: Grant
    Filed: December 20, 2018
    Date of Patent: October 11, 2022
    Assignees: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., Beijing BOE Technology Development Co., Ltd.
    Inventors: Bin Zhao, Lili Chen, Hao Zhang, Jinghua Miao, Yukun Sun, Xuefeng Wang, Lixin Wang, Xi Li, Jianwen Suo, Ruifeng Qin, Ziqiang Guo, Guixin Yan
  • Patent number: 11462644
    Abstract: A TFT module includes TFTs; gate bus lines; a plurality of source bus lines; unit electrodes connected with the source bus lines via the TFTs; a gate driver configured to supply a scan signal from a first end of the gate bus lines and a source driver configured to supply a data signal from a first end of the source bus lines, the gate driver and the source driver being provided in a second region lying around a first region in which the unit electrodes are provided; current sensing circuits provided in the second region; and feedback lines. Each of the feedback lines is connected with a corresponding current sensing circuit and with a second end of a corresponding source bus line or gate bus line, the second end being opposite to the first end.
    Type: Grant
    Filed: August 2, 2018
    Date of Patent: October 4, 2022
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Masashi Otsubo, Akio Takahashi, Akinori Kubota
  • Patent number: 11455946
    Abstract: A display device includes a plurality of light emitting diodes and a plurality of pixel driver circuits for driving the plurality of light emitting diodes; a panel driver including a plurality of driver integrated circuits (ICs) and a first switching element; a timing controller including a second switching element; and a signal transmission line connecting the first switching element and the second switching element. The timing controller is configured to control the first switching element and the second switching element to transmit an image data signal from the timing controller to the panel driver through the signal transmission line during a first time period, and control the first switching element and the second switching element to receive a state data signal of the display panel from the panel driver through the signal transmission line during a second time period different from the first time period.
    Type: Grant
    Filed: April 7, 2021
    Date of Patent: September 27, 2022
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Byeongcheol Hyeon
  • Patent number: 11455958
    Abstract: A display device includes: a display panel including a plurality of pixels; and a driving controller configured to: generate a data signal corresponding to an input image data; generate a data voltage based on the data signal; and output the data voltage to the pixels, wherein the driving controller is configured to output the data signal in at least one driving frequency higher than a predetermined low frequency during an image transition period in a low frequency driving mode during which the data signal outputs in the low frequency.
    Type: Grant
    Filed: June 14, 2021
    Date of Patent: September 27, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sehyuk Park, Hyojin Lee, Hui Nam, Jinyoung Roh, Bong Hyun You, Eunho Lee
  • Patent number: 11449124
    Abstract: In one general aspect, a method can include determining that a computing device is in a stationary position for a predetermined time, placing the computing device in a first power mode, detecting input from at least one sensor included in the computing device, identifying at least one application to launch on the computing device based on the detected input and on a heuristic-based usage pattern for the computing device, and transitioning the computing device from the first power mode to a second power mode based on the detected input. The transitioning can include automatically launching the at least one application on the computing device. The at least one application can provide content for display on a display device included in the computing device.
    Type: Grant
    Filed: March 6, 2018
    Date of Patent: September 20, 2022
    Assignee: Google LLC
    Inventors: Choon Ping Chng, Rachel Nancollas, Alec Berg, Alexandra Levich
  • Patent number: 11450283
    Abstract: A pixel circuit includes a first pixel including a first switching element including a control electrode connected to a first node, an input electrode receiving a first power voltage and an output electrode connected to a second node, a second switching element including a control electrode receiving a first signal, an input electrode receiving a first data voltage and an output electrode connected to the first node, a first light emitting element including a first electrode connected to the second node and a second electrode receiving a second power voltage, a third switching element including a control electrode receiving a second signal, an input electrode connected to the second node and an output electrode connected to a third node and a fourth switching element including a control electrode receiving a third signal, an input electrode connected to the third node and an output electrode connected to a sensing line.
    Type: Grant
    Filed: March 5, 2021
    Date of Patent: September 20, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hyoung-Wook Kim, Dong In Kim, Bong Im Park, Woo Il Park, Yong-Jin Shin
  • Patent number: 11443691
    Abstract: Disclosed is an electroluminescent display device including a display panel, a power supply unit, and a data driver. The display panel includes a subpixel for displaying an image. The power supply unit supplies a positive voltage and a negative voltage to the display panel. The data driver supplies a first initialization voltage and a second initialization voltage to the display panel, as well as a data voltage, and at least one of the first initialization voltage and the second initialization voltage is varied.
    Type: Grant
    Filed: September 14, 2018
    Date of Patent: September 13, 2022
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Minsu Cho, Jaehyuk Oh
  • Patent number: 11443688
    Abstract: The present disclosure relates to an image display apparatus and a method thereof. The image display apparatus according to an embodiment of the present disclosure comprises: a display panel; a panel temperature sensor configured to detect a temperature of the display panel; and a controller configured to: first check a state of the display panel; perform a primary afterimage compensation on the display panel based on a result of first checking the state of the display panel; monitor the temperature of the display panel through the panel temperature sensor when the primary afterimage compensation is performed; secondly check the state of the display panel when the temperature of the display panel is less than or equal to a predetermined reference temperature; and perform a secondary afterimage compensation on the display panel based on a result of secondly checking the state of the display panel.
    Type: Grant
    Filed: June 22, 2021
    Date of Patent: September 13, 2022
    Assignee: LG ELECTRONICS INC.
    Inventor: Seungnam Bae
  • Patent number: 11443685
    Abstract: A display device includes a processor circuit, a driver circuit, and a display panel. The driver circuit is coupled to the processor circuit to detect whether there is abnormal transmission between the processor circuit and the driver circuit. The display panel is coupled to the driver circuit. The display panel includes a display array and a shift register circuit. The display array is to display an image. The shift register circuit is coupled to the display array. When there is the abnormal transmission in a first display period of a first frame, the driver circuit outputs a control signal having a disable level in the first display period to the shift register circuit to control the shift register circuit not to operate in order to stop updating the image.
    Type: Grant
    Filed: October 19, 2021
    Date of Patent: September 13, 2022
    Assignee: NOVATEK Microelectronics Corp.
    Inventors: Tso-Hua Chien, Huang-Chin Tang
  • Patent number: 11443672
    Abstract: A data driver includes a digital to analog converter, a buffer and a buffer controller. The digital to analog converter is configured to receive a data signal having a digital type and to convert the data signal into a data voltage having an analog type. The buffer is configured to buffer the data voltage and to output the data voltage. The buffer controller is configured to determine a parameter of the buffer based on previous line data of the data signal and present line data of the data signal.
    Type: Grant
    Filed: April 27, 2021
    Date of Patent: September 13, 2022
    Inventors: Young-Soo Hwang, Joon-Chul Goh, Ohjo Kwon, Jeongmin Kim, Bonghyun You, Hyung-Min Lee, Seung Hun Choi
  • Patent number: 11435628
    Abstract: A display device is provided and includes first substrate; first insulating layer on first substrate; first common electrode in first row on first insulating layer; second common electrode in second row on first insulating layer; second insulating layer on first and second common electrodes; pixel electrodes on second insulating layer; first line connected to first common electrode; second line connected to second common electrode; drive signal line outside display area; first transistor between first and drive signal lines; second transistor between second and drive signal lines; second substrate facing first substrate; and liquid crystal layer between first and second substrates; wherein first and second transistors are outside the display area, and second line is longer than first line.
    Type: Grant
    Filed: April 28, 2021
    Date of Patent: September 6, 2022
    Assignee: Japan Display Inc.
    Inventor: Gen Koide
  • Patent number: 11436985
    Abstract: A display apparatus includes a display panel including pixels, a gate driver applying a gate signal to a gate line, a data driver applying a data voltage to a data line and a driving controller determining a mode of an input image data to a moving image mode or a static image mode according to whether the input image data is a moving image or a static image, driving the display panel in a moving image driving frequency in the moving image mode and in a static image driving frequency in the static image mode, operating the gate driver in an alternate driving mode such that the gate driver scans a first group of the gate lines in a first duration and a second group of the gate lines in a second duration and inserting a compensation frame to scan all of the gate lines when an image transition is occurred in the static image mode.
    Type: Grant
    Filed: May 10, 2021
    Date of Patent: September 6, 2022
    Inventors: Sehyuk Park, Hongsoo Kim, Jinyoung Roh, Hyojin Lee, Jaekeun Lim, Junheyung Jung
  • Patent number: 11430791
    Abstract: A semiconductor device capable of obtaining the threshold voltage of a transistor is provided. The semiconductor device includes a first transistor, a first capacitor, a first output terminal, a first switch, and a second switch. A gate and a source of the first transistor are electrically connected to each other. A first terminal of the first capacitor is electrically connected to the source. A second terminal and the first output terminal of the first capacitor are electrically connected to a back gate of the first transistor. The first switch controls input of a first voltage to the back gate. A second voltage is input to a drain of the first transistor. The second switch controls input of a third voltage to the source.
    Type: Grant
    Filed: January 11, 2019
    Date of Patent: August 30, 2022
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Hitoshi Kunitake, Ryunosuke Honda, Tomoaki Atsumi
  • Patent number: 11430361
    Abstract: An integrated circuit (IC), a display device and an anti-interference method thereof are provided. The IC includes an input pad, a source driving circuit and an anti-interference circuit. The input pad receives an input signal comprising image data from the external. The source driving circuit is coupled to the input pad to receive the input signal. The anti-interference circuit is coupled to the input pad to provide a variable capacitance. The anti-interference circuit adjusts the variable capacitance from a normal capacitance value to at least one anti-interference capacitance value when an interference event occurs to the input signal. The anti-interference circuit maintains the variable capacitance at the normal capacitance value when the interference event does not occur.
    Type: Grant
    Filed: January 30, 2019
    Date of Patent: August 30, 2022
    Assignee: Novatek Microelectronics Corp.
    Inventors: Hsi-Mao Yu, Chin-Hung Hsu
  • Patent number: 11423822
    Abstract: An embodiment of a display apparatus includes a display panel, a driving controller, and a data driver. In operation the driving controller determines a gain reducing area based on an edge load of input image data corresponding to an edge area of the display panel and compensates a grayscale value of the input image data corresponding to the gain reducing area to generate a data signal. The data driver converts the data signal to a data voltage and outputs the data voltage to the display panel.
    Type: Grant
    Filed: August 25, 2021
    Date of Patent: August 23, 2022
    Inventors: Heesook Park, Kihyun Pyun
  • Patent number: 11423834
    Abstract: A display device includes: a pixel configured to display an image based on image data and a reference voltage; a controller configured to generate reference voltage data corresponding to the reference voltage for restraining leakage current in the pixel based on a frame frequency; and a power supply configured to generate the reference voltage based on the reference voltage data and supply the reference voltage to the pixel.
    Type: Grant
    Filed: January 5, 2021
    Date of Patent: August 23, 2022
    Inventors: Se Hyuk Park, Hong Soo Kim, Jin Young Roh, Hyo Jin Lee, Jae Keun Lim
  • Patent number: 11422421
    Abstract: A liquid crystal display includes a gate line; a data line crossing the gate line; a first voltage line spaced apart from the gate line; a second voltage line, a first transistor including a first gate electrode connected to the gate line, a first source electrode connected to the data line, and a first drain electrode; a second transistor including a second gate electrode connected to the gate line, a second source electrode connected to the data line, and a second drain electrode; a third transistor including a third gate electrode connected to the first voltage line, a third source electrode connected to the second drain electrode, and a third drain electrode connected to the second voltage line; a first liquid crystal capacitor connected to the first drain electrode of the first transistor; and a second liquid crystal capacitor connected to the second drain electrode of the second transistor.
    Type: Grant
    Filed: February 7, 2020
    Date of Patent: August 23, 2022
    Inventors: Young Jae Jeon, Shin Tack Kang, Su In Kim, Ju Yong Park, Gi Jung Lee, Sol Ip Jeong
  • Patent number: 11417284
    Abstract: A sensing circuit includes a first input selecting circuit connected to a first sensing line and a second sensing line, a first path setting circuit that sets a path of a first sensing signal received from the first sensing line or a path of a second sensing signal received from the second sensing line, a second path setting circuit that sets a path of a sensing reference voltage, a first switch matrix connected to the first path setting circuit and the second path setting circuit, a first mode setting circuit connected to a first output terminal of the first switch matrix, a first common sensing amplifier connected to the first mode setting circuit, a second mode setting circuit connected to a second output terminal of the first switch matrix, and a second common sensing amplifier connected to the second mode setting circuit.
    Type: Grant
    Filed: September 7, 2021
    Date of Patent: August 16, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Sung Hwan Kim, Wook Lee, Hayong Jung
  • Patent number: 11410590
    Abstract: A display panel and a display device are provided. The display panel includes a driving circuit including N-level shift registers cascaded with each other, where N is greater than or equal to two. A shift register includes a first control unit configured to receive an input signal, and control a signal of a first node; a second control unit configured to receive a first voltage signal and a second voltage signal, and control a signal of a second node; a third control unit configured to receive the first voltage signal and the second voltage signal, and control a signal of a fourth node; and a fourth control unit configured to receive a third voltage signal and a fourth voltage signal, and generate an output signal. The first and third voltage signals are high-level signals, and the second and fourth voltage signals are low-level signals.
    Type: Grant
    Filed: October 18, 2021
    Date of Patent: August 9, 2022
    Assignee: Xiamen Tianma Micro-Electronics Co., Ltd.
    Inventors: Qingjun Lai, Yihua Zhu
  • Patent number: 11410601
    Abstract: The present disclosure provides method and a computer readable medium for adjusting voltage applied on a display panel. The present disclosure could utilize the ratio of Vgs of two different tests, as an adjustment factor, to compensate the voltage value of each display area. Thus, the method could obtain the same compensation voltage for different display area to compensate the voltage difference between the node G and the node S. This could reduce the influence of the output step. In addition, the method could further detect the inputted compensation voltage to obtain a current value according to a second adjusting step. Through the current formula, the ratio of constant k of each display area could be obtained to adjust the threshold value of the TFT according to the current formula such that the current of each display area could be consistent.
    Type: Grant
    Filed: November 18, 2019
    Date of Patent: August 9, 2022
    Assignee: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd.
    Inventor: Jianhang Fu
  • Patent number: 11411065
    Abstract: A display device includes a first pixel including a first transistor, a second transistor, and a third transistor, a second pixel disposed adjacent to the first pixel in a first direction, and including a first transistor, a second transistor, and a third transistor, and an initialization voltage line disposed between the first pixel and the second pixel, and extending in a second direction crossing the first direction. The second transistor of the first pixel and the second transistor of the second pixel are connected to the initialization voltage line. The first, second, and third transistors of the first pixel and the first, second, and third transistors of the second pixel are symmetrical with respect to the initialization voltage line.
    Type: Grant
    Filed: July 28, 2020
    Date of Patent: August 9, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Kang Moon Jo, Young Wan Seo, Chong Chul Chai
  • Patent number: 11410594
    Abstract: A method of dynamic bias control of a source driver bases on data wing level for power-saving. In order to cover the operating conditions of various loads under normal operations, the output buffer circuit operation is biased. The method utilizes the display gray scale difference between a previous data line and an immediately subsequent data line to determine the bias current to be used for the output buffer. When the difference between the current data line display gray scale and the previous data line display gray scale is not large, the bias current of the output buffer can be reduced. When the difference between the current data line display gray scale and the previous data line display gray scale is large, the bias current of the output buffer is increased and the current of the output buffer is adjusted according to different load conditions to save power.
    Type: Grant
    Filed: May 20, 2021
    Date of Patent: August 9, 2022
    Assignee: NOVATEK MICROELECTRONICS CORP.
    Inventors: Chun-Hung Chen, Chia-Hsin Tung, Hsin-Hung Ou, Hung-Yi Lin