Solid Body Light Emitter (e.g., Led) Patents (Class 345/82)
  • Patent number: 11367393
    Abstract: Provided are a display panel, a driving method thereof and a display device. The display panel includes a substrate, multiple sub-pixels located on one side of the substrate, and at least one signal conversion circuit. Each sub-pixel includes a pixel driving circuit and a light-emitting element. The pixel driving circuit includes an initialization transistor and a driving transistor. A first electrode of the initialization transistor is electrically connected to a gate of the driving transistor. The signal conversion circuit may convert a received initialization signal to a first initialization signal or convert the initialization signal to a second initialization signal according to a received data control signal, and generate an output of the conversion to the second electrode of the initialization transistor. This can avoid an unstable gate voltage of the driving transistor caused by a leakage current, further improve the display effect.
    Type: Grant
    Filed: September 3, 2020
    Date of Patent: June 21, 2022
    Assignee: SHANGHAI TIANMA AM-OLED CO., LTD.
    Inventors: Gao Yana, Xinzhao Liu, Yue Li, Xingyao Zhou, Minfu Zhang
  • Patent number: 11367162
    Abstract: An electro-optical device includes a pixel circuit 41G, a pixel circuit 41B, a high potential line 47G configured to supply a high potential VDDG to the pixel circuit 41G, a high potential line 47B configured to supply a high potential VDDB to the pixel circuit 41B, and a low potential line 46 configured to supply a first low potential VSS1 to the pixel circuit 41G and the pixel circuit 41B. The pixel circuit 41G includes a light-emitting element 20G configured to display G, the pixel circuit 41B includes a light-emitting element 20B configured to display B, and the high potential VDDG and the high potential VDDB are mutually independent.
    Type: Grant
    Filed: January 28, 2021
    Date of Patent: June 21, 2022
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Mitsutoshi Miyasaka, Yoichi Momose, Kiyoshi Sekijima
  • Patent number: 11358379
    Abstract: The disclosure provides a method for forming an information carrying card or a core layer of an information carrying card using a radiation curing, and an apparatus configured to provide such a radiation curing. The method includes providing a carrier layer that defines at least one cavity, providing an inlay layer supporting at least one electronic component, and positioning at least a portion of the inlay layer in the at least one cavity. The method further comprises dispensing a radiation crosslinkable polymer composition over the inlay layer, and irradiating the radiation crosslinkable polymer composition.
    Type: Grant
    Filed: June 29, 2021
    Date of Patent: June 14, 2022
    Assignee: X-Card Holdings, LLC
    Inventor: Mark A. Cox
  • Patent number: 11355072
    Abstract: An electro-optical device is provided with a plurality of data lines, a plurality of potential lines supplied with a predetermined potential, a driving transistor controlling a current level according to the voltage between the gate and the source, a first storage capacitor which holds the voltage between the gate and a source of the driving transistor, and a light-emitting element. One data line among the plurality of data lines and one potential line among the plurality of potential lines are arranged to be adjacent to each other, and a second storage capacitor holding the potential of the one data line is formed by the one data line and the one potential line.
    Type: Grant
    Filed: September 18, 2020
    Date of Patent: June 7, 2022
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Toshiyuki Kasai, Takeshi Nomura
  • Patent number: 11354928
    Abstract: A photoelectric detection circuit, a photoelectric detection method, an array substrate, a display panel, and a fingerprint image acquisition method are provided. The photoelectric detection circuit includes a pixel circuit and a phototransistor. The pixel circuit includes an infrared light-emitting element and is configured to emit infrared light according to a scanning signal and a light-emitting data signal. The phototransistor is configured to detect the infrared light emitted by the pixel circuit and reflected by a detection object in response to a sampling control signal.
    Type: Grant
    Filed: February 28, 2019
    Date of Patent: June 7, 2022
    Assignees: CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Guoqiang Tang, Yang Wang, Yingsong Xu
  • Patent number: 11348517
    Abstract: The present disclosure relates to the field of display technology, and more particularly, to a pixel circuit, a driving method thereof, and a display device. The pixel circuit may comprise a first switch element, a driving transistor, a storage capacitor, a second switch element, and a photosensitive element.
    Type: Grant
    Filed: January 18, 2019
    Date of Patent: May 31, 2022
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xiaoliang Ding, Xue Dong, Haisheng Wang, Yingming Liu, Wei Liu, Changfeng Li, Pengpeng Wang, Huizhong Zhu
  • Patent number: 11346511
    Abstract: Each of a plurality of lighting nodes in a linear array is connected at different respective positions along a flexible, rigid or malleable continuous supporting line. One or more attachable dividers are provided, configured to be mechanically attachable by a user onto the line without severing the line, or at least without completely severing the line, each between a respective neighbouring pair of the lighting nodes. Each of the attachable dividers is configured so as, when attached to the line, to enable detection of a position at which the divider is connected along the line relative to the lighting nodes, and configured to provide information related to said position to the controller, thus dividing the lighting nodes into different segments along the line. A controller is configured to apply a different lighting effect to the illumination emitted by the lighting nodes in each of some or all of the different segments.
    Type: Grant
    Filed: March 11, 2020
    Date of Patent: May 31, 2022
    Assignee: SIGNIFY HOLDING B.V.
    Inventors: Philips Steven Newton, Bartel Marinus Van De Sluis, Dzmitry Viktorovich Aliakseyeu, Jochen Renaat Van Gheluwe
  • Patent number: 11348979
    Abstract: A display device may include a display panel and an input sensor. Mesh lines of the input sensor may include first mesh lines extending in a first direction and second mesh lines extending in a second direction crossing the first direction. The first mesh lines and the second mesh lines may cross each other at a plurality of cross points. In a unit region of the sensing electrode, first cutting points may be defined in the first mesh lines and the second mesh lines, and second cutting points may be defined in the first mesh lines and the second mesh lines.
    Type: Grant
    Filed: February 16, 2020
    Date of Patent: May 31, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Joong-Soo Moon, Kwang-Min Kim, Yangwan Kim, Keunsoo Lee, Youngjin Cho
  • Patent number: 11341902
    Abstract: A display device including a display panel including scan lines, emission control lines, and pixels connected to the scan lines and the emission control lines; a first emission driver sequentially providing first emission control signals to odd-numbered emission control lines among the emission control lines in a first frame section; a second emission driver sequentially providing second emission control signals to even-numbered emission control lines among the emission control lines in a second frame section that is continuous from the first frame section; and a scan driver sequentially providing scan signals to the scan lines in each of the first and second frame sections.
    Type: Grant
    Filed: August 4, 2020
    Date of Patent: May 24, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jae Sic Lee, Won Kyu Kwak
  • Patent number: 11342385
    Abstract: A pixel arrangement structure, a display substrate, a display device, and a mask plate group. The pixel arrangement structure includes multiple minimum repeat units arranged in an array; each minimum repeat unit includes a first color sub-pixel, a second color sub-pixel, and a third color sub-pixel; a first connecting line between the centers of the first color sub-pixel and the second color sub-pixel extends along a first direction, and a second connecting line between the centers of the first color sub-pixel and the third color sub-pixel extends along a second direction; the orthographic projection of the first color sub-pixel on a first straight line falls into the orthographic projection of the third color sub-pixel on the first straight line, and the orthographic projection of the first color sub-pixel on a second straight line falls into the orthographic projection of the second color sub-pixel on the second straight line.
    Type: Grant
    Filed: December 28, 2018
    Date of Patent: May 24, 2022
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Hongli Wang, Lujiang Huangfu
  • Patent number: 11341912
    Abstract: The present disclosure provides a pixel circuit and a method for driving the same, a display panel and a display device. The pixel circuit includes: a reset compensation circuit, a data writing circuit, a light emitting control circuit, a driving transistor and a light emitting element, the reset compensation circuit is coupled to a gate, a first electrode and a second electrode of the driving transistor and a reset control signal line, and is configured to reset the gate of the driving transistor during a reset compensation stage and acquire a threshold voltage of the driving transistor under the control of a reset control signal provided by the reset control signal line.
    Type: Grant
    Filed: February 12, 2019
    Date of Patent: May 24, 2022
    Assignees: CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Hongqing Feng
  • Patent number: 11341910
    Abstract: A pixel circuit of low power consumption is provided, which includes a first transistor for providing a driving current, a light emitting element, a light emitting control circuit, a reset circuit, a writing circuit, and a storage capacitor. The light emitting control circuit is coupled between the first transistor and the light emitting element, and is for selectively conducting the driving current to the light emitting element. The reset circuit is for providing a first reference voltage to the light emitting element by a first frequency. The storage capacitor is coupled between the writing circuit and the first transistor. The writing circuit is for providing, by a second frequency different from the first frequency, a data voltage and a second reference voltage to the storage capacitor and the first transistor, respectively. The storage capacitor is for storing a first voltage for compensating a threshold voltage of the first transistor.
    Type: Grant
    Filed: February 9, 2021
    Date of Patent: May 24, 2022
    Assignee: AU OPTRONICS CORPORATION
    Inventors: Kai-Wei Shiau, Chia-Yuan Yeh, Kuang-Hsiang Liu
  • Patent number: 11335301
    Abstract: A device for dimming a display screen includes a pixel driving circuit including a first Thin-Film Transistor, a second Thin-Film Transistor, a third Thin-Film Transistor, a capacitor and a pixel. Signals received by a gate of the first Thin-Film Transistor and a first electrode of the first Thin-Film Transistor correspond to a scanning signal Vscan and a data signal Vdata, respectively. Signals received by a gate of the third Thin-Film Transistor and a first electrode of the third Thin-Film Transistor correspond to a Vpwm signal and a transmitted signal transmitted from a second electrode of the second Thin-Film Transistor, respectively. A second electrode of the third Thin-Film Transistor is connected to the pixel. The capacitor is connected between the gate of the second Thin-Film Transistor and a power supply.
    Type: Grant
    Filed: April 22, 2021
    Date of Patent: May 17, 2022
    Assignee: KUNSHAN GO-VISIONOX OPTO-ELECTRONICS CO., LTD.
    Inventor: Yuqing Wang
  • Patent number: 11335246
    Abstract: A display panel and a display device are provided in the present disclosure. The display panel includes first pixels and second pixels, and further includes a display region including an optical component region and a regular display region. First light-emitting elements are in the optical component region; second light-emitting elements are in the regular display region; and a density of the light-emitting elements in the optical component region is less than a density of the light-emitting elements in the regular display region. The first pixels include first blue pixels, first red pixels, and first green pixels; a width-to-length ratio of a first drive transistor corresponding to a first blue pixel is R1, a width-to-length ratio of a first drive transistor corresponding to a first red pixel is R2, and a width-to-length ratio of a first drive transistor corresponding to a first green pixel is R3, where R1>R2>0 and/or R1>R3>0.
    Type: Grant
    Filed: September 14, 2020
    Date of Patent: May 17, 2022
    Assignee: Wuhan Tianma Micro-Electronics Co., Ltd.
    Inventors: Fengyun Wu, Yawei Wang, Dongxu Xiang, Yangzhao Ma
  • Patent number: 11315907
    Abstract: Some embodiments provide a full-color display module and display device. The full-color display module includes at least two light-emitting layers. Any one of the at least two light-emitting layers includes a substrate and a plurality of light-emitting portions encapsulated on the substrate. A type of any one of the plurality of light-emitting portions is one of a red light-emitting portion, a green light-emitting portion, and a blue light-emitting portion. The at least two light-emitting layers are successively laminated in a laminating direction and form a plurality of pixel points. Any one of the plurality of pixel points is a surrounding area on the full-color display module, which is surrounded by a surrounding curved surface. The surrounding area of the any one of the plurality of pixel points includes at least one red light-emitting portion, at least one green light-emitting portion, and at least one blue light-emitting portion.
    Type: Grant
    Filed: August 18, 2020
    Date of Patent: April 26, 2022
    Assignee: FOSHAN NATIONSTAR OPTOELECTRONICS CO., LTD
    Inventors: Kailiang Fan, Kuai Qin, Heng Guo, Qiang Zhao, Zongxian Xie, Chungan Jiang
  • Patent number: 11315482
    Abstract: A pixel includes a light emitting device, a first transistor for controlling an amount of current flowing from a first power source to a second power source via the light emitting device, in response to a voltage applied to a first node, a second transistor coupled between a data line and a second node corresponding to a first electrode of the first transistor, and including a gate electrode coupled to a first scan line, a third transistor coupled between the first node and a third node corresponding to a second electrode of the first transistor, and including a gate electrode coupled to the first scan line, and a fourth transistor coupled between the third transistor and the third node, and configured to maintain a turn-on state.
    Type: Grant
    Filed: March 10, 2020
    Date of Patent: April 26, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Dae Youn Cho, Ji Ho Moon, Jong Woo Park, Young Tae Choi
  • Patent number: 11303256
    Abstract: A temperature compensation circuit for a power amplifier is provided, wherein data of circuit configurations corresponding to specific temperatures (including data associated with an output terminal voltage, a bias voltage, an adaptive bias, and a matching impedance of the power amplifier) for the power amplifier is stored in a read-only memory. Therefore, the temperature compensation circuit is capable of reading the data according to a temperature sensing signal to adjust the circuit configuration of the power amplifier accordingly, thereby, in a case of a constant input power of the power amplifier, an output power variance of the power amplifier is within a second interval (e.g., ?10%˜+10%) when an environment temperature varies within a first interval. Therefore, the power amplifier has a stable gain.
    Type: Grant
    Filed: November 2, 2020
    Date of Patent: April 12, 2022
    Assignee: RichWave Technology Corp.
    Inventor: Hwey-Ching Chien
  • Patent number: 11302247
    Abstract: The present disclosure provides a LED display device, which includes: a LED display substrate and a driving substrate opposite to each other, the LED display substrate includes: a base and a plurality of LED chips located on a side of the base distal to the driving substrate; the driving substrate includes: a PCB and a driving control element located on the PCB, and the driving control element is electrically coupled to the LED chips through a plurality of first signal wires for providing driving signals for the LED chips.
    Type: Grant
    Filed: December 13, 2019
    Date of Patent: April 12, 2022
    Assignees: BEIJING BOE DISPLAY TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Pengjun Cao, Ming Zhai, Pei Li, Zhiyuan Wang, Jinpeng Li, Dan Li, Jian Li, Teng Zhang
  • Patent number: 11295673
    Abstract: A display device includes a display panel including a plurality of pixels, a timing controller which generates an emission start signal, an emission driver which supplies an emission control signal to the plurality of pixels based on the emission start signal received from the timing controller, a first scan driver which supplies a first scan signal to the plurality of pixels, a second scan driver which supplies a second scan signal to the plurality of pixels, and a data driver which supplies a data signal to the plurality of pixels. The timing controller adjusts a period in which the emission start signal is supplied based on a change of a driving frequency.
    Type: Grant
    Filed: October 14, 2020
    Date of Patent: April 5, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jun Hyun Park, Bon Yong Koo, Byung Chang Yu, Yu Jin Lee, Kyung Hoon Chung
  • Patent number: 11289013
    Abstract: A pixel circuit including a compensation circuit, a writing circuit, a light emitting element, and a power supplying circuit is provided. The compensation circuit comprises a first node, and provides a driving current to the light emitting element according to a voltage of the first node and a system high voltage. The writing circuit provides a data voltage to the compensation circuit according to a first control signal so that the compensation circuit sets the voltage of the first node. The power supplying circuit selectively couples the compensation circuit to the light emitting element, and provides the system high voltage and a system low voltage to the compensation circuit, in which the system low voltage is configured to reset the voltage of the first node. The first control signal and the second control signal are opposite to the first emission signal and the second emission signal, respectively.
    Type: Grant
    Filed: October 20, 2020
    Date of Patent: March 29, 2022
    Assignee: AU OPTRONICS CORPORATION
    Inventors: Chih-Lung Lin, Po-Cheng Lai, Ting-Ching Chu, Po-Chun Lai, Mao-Hsun Cheng
  • Patent number: 11289009
    Abstract: A pixel driving circuit for a light-emission-device-based display panel is provided, including a driving transistor coupled to a light-emission device per subpixel; a digital-driving circuit having a first input terminal configured to receive a pixel voltage signal corresponding to a grayscale level of a subpixel image to be displayed and a first output terminal coupled to a gate terminal of the driving transistor. The digital-driving circuit is configured to convert the pixel voltage signal to a digital signal and transform the digital signal to a pulse-width-modulation (PWM) signal outputted via the first output terminal to the gate terminal of the driving transistor. The PWM signal comprises a pulse width proportional to the grayscale level as a duty cycle in a period of driving the light-emitting device to display subpixel image.
    Type: Grant
    Filed: October 25, 2019
    Date of Patent: March 29, 2022
    Assignees: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE Technology Group Co., Ltd.
    Inventors: Guofeng Hu, Zhenkun Song, Ming Chen, Lingyun Shi, Yuxin Bi, Xin Duan, Yankai Gao, Hong Liu, Mingjian Yu
  • Patent number: 11289040
    Abstract: A driving circuit and a driving method of a liquid crystal display are provided. By controlling a reset signal of a timing controller through a switching transistor, a GOA signal is recovered when reading compensation parameters is completed, and the GOA signal is turned off when the reset signal is restarted. Therefore, the timing controller is not affected by the GOA signal output by a pulse width modulator when performing SPI communication with a flash memory. In addition, this reduces communication time, thereby improving speed of optical compensation debugging of a production line.
    Type: Grant
    Filed: December 13, 2019
    Date of Patent: March 29, 2022
    Assignee: TCL China Star Optoelectronics Technology Co., Ltd.
    Inventor: Miaofa Wu
  • Patent number: 11289024
    Abstract: A display device includes: a display panel provided with multiple pixels; a driving circuit; and a power generator, wherein each of the pixels includes: a first switching transistor of which a gate electrode is connected to the gate line, of which a first electrode is connected to the data line, and of which a second electrode is connected to a first node; a driving transistor of which a gate electrode is connected to a reference line and thus receives a reference voltage supplied from the power generator, of which a first electrode is connected to the first node, and of which a second electrode is connected to a second node; and a light-emitting device of which an anode electrode is connected to the second node, and of which a cathode electrode is connected to a power line through which the power generator supplies a low-potential power supply voltage.
    Type: Grant
    Filed: July 6, 2020
    Date of Patent: March 29, 2022
    Assignee: LG Display Co., Ltd.
    Inventors: Kyujin Kim, Taehun Kim, Donggun Lee
  • Patent number: 11282456
    Abstract: The present disclosure provides, in a pixel sensing, a technology in which a parasitic impedance formed in a sensing line does not affect an integrating circuit using a current mirror circuit coupled with an operational amplifier.
    Type: Grant
    Filed: December 16, 2020
    Date of Patent: March 22, 2022
    Assignee: SILICON WORKS CO., LTD.
    Inventors: Taiming Piao, Young Bok Kim, Won Kim, Byeon Cheol Lee
  • Patent number: 11282444
    Abstract: A light emitting display apparatus includes a light emitting display panel including a plurality of pixels each operating in order of an initialization period, a sampling period, an offset voltage formation period, a data writing period, and a light emission period; a data driving circuit configured to supply data voltage to each of the pixels; a gate driving circuit configured to provide, to each of the pixels, a control signal having voltage levels determined for the initialization period, the sampling period, the offset voltage formation period, the data writing period, and the light emission period of a corresponding pixel; and a timing controller configured to control the data driving circuit and the gate driving circuit, wherein the offset voltage formation period is longer than the sampling period.
    Type: Grant
    Filed: April 7, 2021
    Date of Patent: March 22, 2022
    Assignee: LG Display Co.. Ltd.
    Inventors: YongHo Jang, KwangIl Chun
  • Patent number: 11282419
    Abstract: A detection method, a display panel, and a drive method are disclosed. The detection method includes: performing group compensation on a scanning line by externally connecting to a compensation resistor having an adjustable resistance value and writing a corresponding resistance compensation value into a gate drive resistance compensation table.
    Type: Grant
    Filed: October 22, 2018
    Date of Patent: March 22, 2022
    Assignee: HKC CORPORATION LIMITED
    Inventor: Bei Zhou Huang
  • Patent number: 11263989
    Abstract: A display device includes a display panel, a data driver, a gate driver, and a controller. The display panel includes a plurality of pixels. The data driver provides data voltages to the plurality of pixels through data lines during an active period of a frame period and provides a blank voltage to the plurality of pixels through the data lines during a blank period of the frame period. The gate driver provides a gate-on voltage to the plurality of pixels through gate lines during the active period and provides a gate-off voltage to the plurality of pixels through the gate lines during the blank period. The controller controls the data driver and the gate driver. The blank voltage increases and the gate-off voltage increases, when a time in the blank period reaches a predetermined time.
    Type: Grant
    Filed: November 23, 2020
    Date of Patent: March 1, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Seung-Woon Shin, Sang Won Kim, Jong Woon Kim, Kyu-Jin Park, Woon-Rok Jang, Tae-Seok Ha
  • Patent number: 11257443
    Abstract: A display device and an image processing method thereof are provided. An image processing method of a display device, according to the present disclosure, comprises the steps of: dividing a display unit of the display device into a plurality of regions; measuring brightness expression performance of the display device, including a value of a relation between the average brightness of the display unit and the brightness of one region among the plurality of regions; calculating an average brightness of an image inputted to the display device; mapping, to the measured brightness expression performance, the calculated average brightness of the inputted image; adjusting the brightness of a region, excluding an emphasized region, of the inputted image so as to generate an adjusted image; and outputting the adjusted image.
    Type: Grant
    Filed: June 26, 2018
    Date of Patent: February 22, 2022
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Sung-Ryeul Rhyu
  • Patent number: 11257419
    Abstract: A current driving digital pixel apparatus including a power rail, a common rail, a micro light emitting device, and a current driver is provided. The power rail is configured to supply a source current. The micro light emitting device is electrically coupled to the common rail. The current driver includes a first switching device electrically coupled to the power rail and a current mirror device electrically coupled between the first switching device and the micro light emitting device. The current mirror device receives the source current from the power rail through the first switching device and supplies a current to the micro light emitting device. The first switching device is a low voltage device and the current mirror device is a medium voltage device.
    Type: Grant
    Filed: July 5, 2019
    Date of Patent: February 22, 2022
    Assignee: Novatek Microelectronics Corp.
    Inventor: Sheng-Wen Hsiao
  • Patent number: 11250779
    Abstract: A pixel circuit includes a light-emitting element, a data write-in sub-circuit, a driving sub-circuit, a storage sub-circuit, a light-emission control sub-circuit, and a step-down sub-circuit. The step-down sub-circuit is configured to, at a charging compensation stage, step down a data voltage to acquire a first step-down voltage, and output the first step-down voltage via a control node. The storage sub-circuit is configured to, at the charging compensation stage, charge or discharge the control node to enable a potential at the control node to be the first step-down voltage, and at a light-emitting stage, maintain the potential at the control node as the first step-down voltage. The driving sub-circuit is configured to, at the light-emitting stage, enable a first end of the driving sub-circuit to be electrically connected to a first electrode of the light-emitting element under the control of the control node, to drive the light-emitting element to emit light.
    Type: Grant
    Filed: December 28, 2018
    Date of Patent: February 15, 2022
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Shengji Yang, Xue Dong, Xiaochuan Chen, Hui Wang, Pengcheng Lu
  • Patent number: 11250769
    Abstract: A compensation system and a compensation method for life attenuation of an organic light emitting diode (OLED) device are provided to include a display data input module, an equivalent life calculation module, an OLED device attenuation degree calculation module, a display position weight ratio module, a life compensation data generation module, and a data compensation and display data output module. The life compensation data generation module is configured to generate final life compensation data according to a feedback result of the OLED device attenuation degree calculation module and the display position weight ratio module.
    Type: Grant
    Filed: April 16, 2020
    Date of Patent: February 15, 2022
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
    Inventors: Limin Wang, Huasheng Su
  • Patent number: 11244601
    Abstract: A display device includes pixels, each including a first transistor including a gate electrode, a first electrode, and a second electrode coupled to a first node, a first power line, and a second node, respectively, a second transistor including a gate electrode, a first electrode, and a second electrode coupled to a scan line, the first node, and a third node, respectively, a third transistor including a gate electrode, a first electrode, and a second electrode coupled to a control line, the third node, and the second node, respectively, a first capacitor including first and second electrodes coupled to the first node and an initialization line, respectively, a second capacitor including first and second electrodes coupled to the third node and a data line, respectively, and a light-emitting diode including an anode and a cathode coupled to the second node and a second power line.
    Type: Grant
    Filed: June 23, 2020
    Date of Patent: February 8, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventor: Jun Hyun Park
  • Patent number: 11244623
    Abstract: A pixel circuit includes: a first to a sixth transistors, a driving transistor and a capacitor. A first-terminal of the first transistor receives a reference voltage. A first-terminal of the second transistor and a first-terminal of the third transistor are coupled to a second-terminal of the first transistor. A second-terminal of the second transistor and a control-terminal of the driving transistor are coupled to a first node. A first-terminal of the fourth transistor receives a data signal. A first-terminal of the fifth transistor receives a system high voltage. A second-terminal of the fourth transistor, a second-terminal of the fifth transistor and a first-terminal of the driving transistor are coupled to a second node. The driving transistor is coupled to a light emitting element through the sixth transistor. The capacitor is coupled between the first node and a first-terminal of the fifth transistor.
    Type: Grant
    Filed: August 19, 2020
    Date of Patent: February 8, 2022
    Assignee: AU OPTRONICS CORPORATION
    Inventor: Hung-Chi Chen
  • Patent number: 11238802
    Abstract: A pixel circuit and a driving method thereof, a display panel, and a display device. The pixel circuit includes a driving circuit, a first switching circuit, a second switching circuit, and a first reset circuit. The driving circuit is configured to drive a light-emitting element to emit light, the first switching circuit is configured to be turned on in response to a first scanning signal to transmit a data signal to a control terminal of the driving circuit, the second switching circuit is configured to be turned on in response to a light-emitting control signal to transmit a first power signal to a first terminal of the driving circuit, and the first reset circuit is configured to be turned on in response to a first reset control signal to transmit a reset signal to the first terminal of the driving circuit.
    Type: Grant
    Filed: March 17, 2020
    Date of Patent: February 1, 2022
    Assignees: Yunnan Invensight Optoelectrics Technology Co. Ltd., BOE Technology Group Co., Ltd.
    Inventors: Rongrong Shi, Shengji Yang, Kuanta Huang, Xiaochuan Chen, Pengcheng Lu
  • Patent number: 11238799
    Abstract: A display panel includes a first display region and a second display region; the first display region includes first sub-pixels provided with first pixel density; and the second display region includes second sub-pixels provided with second pixel density, where the first pixel density is lower than the second pixel density. During one frame of picture display, a light-emitting phase of the first sub-pixel includes a first light-emitting period, and a light-emitting phase of the second sub-pixel includes a second light-emitting period; for same target brightness, the first sub-pixel emits light with first light-emitting brightness in the first light-emitting period, and the second sub-pixel emits light with second light-emitting brightness in the second light-emitting period, where the first light-emitting brightness is higher than the second light-emitting brightness; and the first light-emitting period is shorter than the second light-emitting period.
    Type: Grant
    Filed: December 27, 2019
    Date of Patent: February 1, 2022
    Assignee: Wuhan Tianma Micro-Electronics Co., Ltd.
    Inventors: Shucheng Ge, Guofeng Zhang, Junqiang Wang, Yong Yuan
  • Patent number: 11232753
    Abstract: A display panel and a display device are provided. The display panel includes pixel units arranged in an array, scan signal lines, data signal lines, and pulse width modulation signal lines. Each scan signal line is coupled to a row of the pixel units and outputs a scan signal to the pixel units. Each data signal line is coupled to a column of the pixel units and outputs a data signal to the pixel unit. Each pulse width modulation signal line is coupled to a row of the pixel units and outputs a pulse width modulation signal to the pixel unit and controls lighting time of the pixel unit to achieve different gray levels. The display panel can achieve low brightness driving display and avoid occurrence of excessive brightness caused by excessive current of the light emitting element.
    Type: Grant
    Filed: July 15, 2019
    Date of Patent: January 25, 2022
    Inventors: Shujhih Chen, Shuichih Lien, Chiayu Lee
  • Patent number: 11222587
    Abstract: To provide a pixel circuit capable of suppressing a decrease in luminance due to leakage of a transistor without increasing the number of elements or with a minimum increase in the number of elements even if the number is increased. A pixel circuit is provided including a light-emitting element, a drive transistor configured to supply a current to the light-emitting element, a first reset transistor configured to set a potential of an anode of the light-emitting element to a predetermined potential, a first write transistor configured to control writing of a signal voltage at a gate node of the drive transistor, a holding capacitance having one end connected to the gate node of the drive transistor and configured to hold a threshold voltage of the drive transistor, and a second write transistor connected in series between the gate node of the drive transistor and the first write transistor.
    Type: Grant
    Filed: January 25, 2019
    Date of Patent: January 11, 2022
    Assignee: Sony Semiconductor Solutions Corporation
    Inventor: Naobumi Toyomura
  • Patent number: 11217162
    Abstract: The present disclosure discloses a pixel driving circuit, a pixel circuit, a display panel and a display apparatus, wherein the pixel driving circuit is used for driving a light-emitting element to emit light, and includes: a plurality of switching transistors, wherein each of the switching transistors is an oxide thin film transistor.
    Type: Grant
    Filed: December 5, 2019
    Date of Patent: January 4, 2022
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Long Han, Libin Liu
  • Patent number: 11210995
    Abstract: Disclosed is a display module. The display module includes a display panel including an inorganic light emitting device, a sweep electrode connected to at least one input pin, and a pulse width modulation (PWM) pixel circuit, and a driving unit configured to provide a sweep signal to the sweep electrode through the at least one input pin, in which the PWM pixel circuit includes a driving transistor, and provides a driving current having a pulse width corresponding to a data voltage to the inorganic light emitting device by changing a voltage of a gate terminal of the driving transistor according to the sweep signal applied through the sweep electrode, and a number of the at least one input pin varies depending on a size of the display panel.
    Type: Grant
    Filed: February 13, 2020
    Date of Patent: December 28, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jinho Kim, Sangmin Shin, Tetsuya Shigeta
  • Patent number: 11210982
    Abstract: A method of Mura defect repair, the method including: decoding an image input signal into pixel grayscale data of a frame image; looking up a DeMura lookup table and DeMura control data, and performing linear interpolation on Mura designated areas of the frame image according to the DeMura lookup table and DeMura control data to obtain compensation data of the Mura designated areas of the frame image; and superposing the compensation data and the pixel grayscale data of the frame image to obtain a compensated frame image signal.
    Type: Grant
    Filed: September 16, 2019
    Date of Patent: December 28, 2021
    Assignee: WUHAN JINGCE ELECTRONIC GROUP CO., LTD.
    Inventors: Zengqiang Zheng, Li Qin, Zhao Liu
  • Patent number: 11205392
    Abstract: The present disclosure provides a blacklight and a display device. The blacklight of the present disclosure includes a backlight driving circuit, which includes a plurality of first signal lines and a plurality of second signal lines, a plurality of light string regions are defined by arranging the plurality of first signal lines and the plurality of second signal lines to cross each other, and a part of the plurality of light string regions are configured to be provided with light emitting diode (LED) light strings; the first terminals of LED light strings in a same row are coupled to a same first signal line, and the second terminals of LED light strings in a same column are coupled to a same second signal line.
    Type: Grant
    Filed: December 23, 2019
    Date of Patent: December 21, 2021
    Assignees: BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Binhua Sun, Ziqiang Guo, Jian Sun, Feng Zi, Yakun Wang
  • Patent number: 11201176
    Abstract: The present application discloses an array substrate having a plurality of thin film transistors, a display apparatus, and a method of fabricating an array substrate. The array substrate includes a base substrate; a semiconductor layer on the base substrate and including a plurality of active layers respectively for the plurality of thin film transistors; and an electrostatic discharging layer electrically connected to the semiconductor layer and configured to discharge electrostatic charge in the semiconductor layer.
    Type: Grant
    Filed: August 8, 2017
    Date of Patent: December 14, 2021
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Dini Xie, Wei Li
  • Patent number: 11195864
    Abstract: A flip-chip sample imaging device with self-aligning lid includes an image sensor chip, a fan-out substrate, and a lid. The image sensor chip includes (a) a pixel array sensitive to light incident on a first side of the image sensor chip and (b) first electrical contacts disposed on the first side and electrically connected to the pixel array. The fan-out substrate is disposed on the first side, is electrically connected to the first electrical contacts, forms an aperture over the pixel array to partly define a sample chamber over the pixel array, and forms a first surface facing away from the first side. The lid is disposed on the first surface of the fan-out substrate, facing away from the first side, to further define the chamber. The lid includes an inner portion protruding into the aperture to align the lid relative to the fan-out substrate.
    Type: Grant
    Filed: March 1, 2019
    Date of Patent: December 7, 2021
    Assignee: OmniVision Technologies, Inc.
    Inventors: Ming Zhang, Yin Qian, Chia-Chun Miao, Dyson H. Tai
  • Patent number: 11189220
    Abstract: A display device includes a control circuit, an array of LED zones, and an array of driver circuits that are distributed in the display area. The driver circuits are arranged in groups that are connected in a serial chain by a set of communication lines. The group of driver circuits are configurable between a serial communication mode and a parallel communication mode. In the serial communication mode, each driver circuit receives an incoming signal on an input pin, processes the signal through serial communication logic to generate an outgoing signal, and outputs the outgoing signal to an output pin such that the driver circuits serially process the incoming signal. In the parallel communication mode, each driver circuit transfers the incoming signal from the input pin to the output pin bypassing the serial communication logic such that all driver circuits in the group can process the incoming signal in parallel.
    Type: Grant
    Filed: March 10, 2021
    Date of Patent: November 30, 2021
    Assignee: Huayuan Semiconductor (Shenzhen) Limited Company
    Inventors: Junjie Zheng, Richard Landry Gray, Chih-Chang Wei, Li-lun Chi
  • Patent number: 11189201
    Abstract: Active Matrix Organic Light Emitting Diode (AMOLED) displays, novel pixel circuits therefor, and methods of programming the pixel circuit and measuring the current of the pixel circuit and OLED thereof are disclosed. One pixel circuit includes four TFT transistors, a storage capacitor and an OLED device and is programmed with use of voltage supplied through a data line. One method measures currents of the OLED and the pixel circuit through the data line by a readout circuit.
    Type: Grant
    Filed: November 22, 2018
    Date of Patent: November 30, 2021
    Assignee: Ignis Innovation Inc.
    Inventors: Arash Moradi, Jafar Talebzadeh, Junhu He, Shuenn-Jiun Tang
  • Patent number: 11183116
    Abstract: There are provided a display device and a method of compensating for degradation thereof. The display device includes a display panel including pixels, a sensing unit configured to measure threshold voltages of the pixels, respectively, and a timing controller configured to determine grayscale compensation values with respect to the pixels corresponding to the threshold voltages, respectively, and to compensate input image data with respect to the pixels based on the grayscale compensation values, respectively, wherein the grayscale compensation values have a linear relationship with a grayscale of the input image data by using a linear slope value determined based on the threshold voltages.
    Type: Grant
    Filed: September 10, 2019
    Date of Patent: November 23, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Su Min Yang, Bo Young An, Wook Lee
  • Patent number: 11170684
    Abstract: The present disclosure relates to a driving unit. The driving unit may include a first driving sub-circuit, a second driving sub-circuit, and a driving control circuit. The first driving sub-circuit may include a plurality of first switching demerits, and at least some of the plurality of first switching elements may be configured to output a first signal to a first output terminal of the driving unit in response to a control signal from the driving control circuit. The second driving sub-circuit may include one or more second switching elements, and at least one of the one or more second switching elements may be configured to output a second signal to a second output terminal of the driving unit in response to the control signal from the driving control circuit. The driving control circuit may be configured to output the control signal at a control signal output terminal.
    Type: Grant
    Filed: December 9, 2019
    Date of Patent: November 9, 2021
    Assignees: BEIJING BOE TECHNOLOGY DEVELOPMENT CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Jianbo Xian, Chunping Long, Hui Li, Yong Qiao
  • Patent number: 11170717
    Abstract: A voltage compensation method and apparatus, and a display device are provided. The method includes: acquiring an initial parameter value of a charging parameter of a first pixel circuit in a first pixel unit when the display panel is in a non-operating state; acquiring a plurality of target parameter values of the charging parameter of the first pixel circuit when the display panel is in an operating state; determining a target loading value; and adjusting the driving voltage based on the target loading value to compensate for the driving voltage.
    Type: Grant
    Filed: October 17, 2019
    Date of Patent: November 9, 2021
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventor: Yu Wang
  • Patent number: 11164519
    Abstract: A system reads a desired circuit parameter from a pixel circuit that includes a light emitting device, a drive device to provide a programmable drive current to the light emitting device, a programming input, and a storage device to store a programming signal. One embodiment of the extraction system turns off the drive device and supplies a predetermined voltage from an external source to the light emitting device, discharges the light emitting device until the light emitting device turns off, and then reads the voltage on the light emitting device while that device is turned off. The voltages on the light emitting devices in a plurality of pixel circuits may be read via the same external line, at different times. In-pixel, charge-based compensation schemes are also discussed, which can be used with the external parameter extraction implementations.
    Type: Grant
    Filed: September 27, 2019
    Date of Patent: November 2, 2021
    Assignee: Ignis Innovation Inc.
    Inventor: Gholamreza Chaji
  • Patent number: 11145270
    Abstract: Described herein are systems and methods that reduce power consumption for an electronics device including a display. The systems and methods alter video information in a display area and reduce power for a display device when a graphics item is enlarged and the enlargement threatens to increase perceived luminance for the graphics item or increase aggregate luminance for the display area. Altering the video information reduces the luminance of video information in at least the graphics item when enlarged. This may offset perceived luminance gained by human visual processing when an item increases in size. If the graphics item is smaller than the display area after enlargement, then other video information in the display area may also be altered to conserve power.
    Type: Grant
    Filed: June 12, 2020
    Date of Patent: October 12, 2021
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: William Plut