Brightness Or Intensity Control Patents (Class 345/77)
  • Patent number: 11328655
    Abstract: A display apparatus according to an embodiment of the present disclosure includes: a display panel including a plurality of pixels; and a drive device that outputs a driving signal to the display panel. The driving signal causes one of the pixels to emit light many times by an active PWM drive method in a 1-frame period.
    Type: Grant
    Filed: March 6, 2018
    Date of Patent: May 10, 2022
    Assignees: Sony Semiconductor Solutions Corporation, Sony Corporation
    Inventors: Takaaki Sugiyama, Ken Kikuchi, Atsushi Yasuda, Hirokazu Imai, Hiroshi Tobita
  • Patent number: 11308892
    Abstract: The disclosure relates to an organic light emitting display device that can detect a defect in a scan transistor in the device in which the scan transistor and a sensing transistor simultaneously operate, and the device includes: an OLED in a subpixel; a driving transistor connected between the OLED and a driving voltage line; a scan transistor connected between a first node through which a data voltage is applied to the driving transistor and a data line; a sensing transistor connected between a second node between the driving transistor, the OLED, and a reference voltage line; and a defect detector for applying the data voltage in a state in which both the scan transistor and the sensing transistor are turned off and then detecting an amount of charges charged in a parasitic capacitor of the OLED to determine whether the scan transistor is defective due to foreign substances.
    Type: Grant
    Filed: November 23, 2020
    Date of Patent: April 19, 2022
    Assignee: LG Display Co., Ltd.
    Inventors: Kyung-Hyun Cho, Jae-Deok Ko, Seong-Eok Han
  • Patent number: 11295643
    Abstract: Provided are a detection method and a detection device, the detection method includes: in a first writing stage, providing an active voltage to each data line, each power supply terminal, both ends of a first gate line to-be-detected, an absolute value of the active voltage of each data line is smaller than that of the active voltage of the power supply terminal, an absolute value of the active voltage of the first gate line to-be-detected is smaller than that of the active voltage of each data line; in a first detection stage, maintaining the active voltage of the power supply terminal, providing an inactive voltage to the first gate line to-be-detected and providing an active voltage to the data line, detecting voltages at second electrodes of storage capacitors corresponding to the first gate line to-be-detected, determining whether the first gate line to-be-detected has breakpoint according to the detected voltages.
    Type: Grant
    Filed: September 25, 2020
    Date of Patent: April 5, 2022
    Assignees: HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Jun Wang, Dongfang Wang, Guangyao Li, Haitao Wang, Qinghe Wang, Tongshang Su, Chen Shen, Xiaoning Zhang, Youpeng Gan
  • Patent number: 11282443
    Abstract: A display apparatus includes a light emitting element; and a pixel circuit configured to drive the light emitting element. The pixel circuit may include a first capacitor configured to output a first voltage corresponding to an image signal; a first transistor having a control terminal connected to the first capacitor and to which the first voltage is applied, a first terminal to which a second voltage corresponding to a slope signal that changes over time is applied, and a second terminal configured to output an output signal based on a comparison between the first voltage and the second voltage; and a driving circuit configured to drive the light emitting element based on the output signal of the second terminal.
    Type: Grant
    Filed: November 24, 2020
    Date of Patent: March 22, 2022
    Assignee: SAMSUNG ELECTRONICS CO.. LTD.
    Inventors: Daisuke Kawae, Junichi Yamashita, Takashige Fujimori
  • Patent number: 11270652
    Abstract: A display device includes a display panel in which a plurality of subpixels are arranged at positions at which a plurality of data lines and a plurality of gate lines overlap with each other. A gate driving circuit drives the plurality of subpixels via the plurality of gate lines. A data driving circuit supplies a data output signal to the plurality of subpixels via the plurality of data lines, and the data output signal includes a data voltage and an offset data voltage which is generated by adding an offset to the data voltage. A timing controller controls the gate driving circuit and the data driving circuit.
    Type: Grant
    Filed: December 8, 2020
    Date of Patent: March 8, 2022
    Assignee: LG Display Co., Ltd.
    Inventor: Wonsuk Lee
  • Patent number: 11264436
    Abstract: A display substrate, a manufacturing method thereof, a display panel and a display device are provided. The display substrate includes: a base substrate, a plurality of display areas arranged in an array on the base substrate, and non-display areas between the display areas. A display structure is disposed in the display area and configured to display images. The non-display area is light-transparent and is provided with a photochromic pattern. The photochromic pattern is configured to adjust the light transmittance of the non-display area according to the illumination intensity of the received light.
    Type: Grant
    Filed: January 9, 2018
    Date of Patent: March 1, 2022
    Assignees: BOE Technology Group Co., Ltd., Hefei BOE Optoelectronics Technology Co., Ltd.
    Inventors: Kui Gong, Qingli Feng
  • Patent number: 11257430
    Abstract: A drive method according to the disclosure includes a target row determination step of determining a target row to which a target pixel for which a characteristic of at least one of a drive transistor and an electro-optical element is detected belongs, a luminance calculation step of calculating a representative luminance of a pixel in the target row, and a detection determination step of performing a characteristic detection step of detecting monitoring data indicating the characteristic of at least one of the drive transistor and the electro-optical element of the pixel belonging to the target row in a case where the representative luminance is greater than or equal to a threshold, and skipping the characteristic detection step in a case where the representative luminance is less than the threshold.
    Type: Grant
    Filed: March 29, 2018
    Date of Patent: February 22, 2022
    Assignee: SHARP KABUSHIKI KAISHA
    Inventor: Keiichi Yamamoto
  • Patent number: 11250787
    Abstract: A signal control apparatus and method, a display control apparatus and method, and a display apparatus are provided. The display apparatus includes M rows by N columns of pixel driving circuits arranged in an array, the M pixel driving circuits of each column are grouped into at least a first group of pixel driving circuits and a second group of pixel driving circuits, M and N are integer and N is larger than 2. The first group of pixel driving circuits connect to a first data line to receive a data signal, and the second group of pixel driving circuits connect to a second data line to receive a data signal. The signal control apparatus includes a phase shifting circuit which provides a scanning signal to a pixel driving circuit; and a write control circuit which provides a data signal from a data signal terminal to a pixel driving circuit.
    Type: Grant
    Filed: April 22, 2020
    Date of Patent: February 15, 2022
    Assignees: CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Kuo Sun, Tian Dong, Guoqiang Ma
  • Patent number: 11251331
    Abstract: Provided are a method of manufacturing a display apparatus and the display apparatus. The method includes forming an emissive layer and a driving layer on a first area of a substrate, forming an exposure line electrically connected to the driving layer, on a second area of the substrate, and forming a color conversion layer on the driving layer by emitting light from the emissive layer using the exposure line.
    Type: Grant
    Filed: October 29, 2019
    Date of Patent: February 15, 2022
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Kiho Kong, Junhee Choi, Deukseok Chung, Junsik Hwang
  • Patent number: 11250780
    Abstract: A system and method for estimating and using pixel compensation coefficients. In some embodiments, the method includes, during a first time interval: comparing a first pixel current for a pixel of the display with a first reference current, to obtain a first pixel current error signal, the first pixel current error signal being the sign of a difference between the first pixel current and the first reference current; and updating one or more compensation coefficients for the pixel, based on the first pixel current error signal.
    Type: Grant
    Filed: October 18, 2019
    Date of Patent: February 15, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Amir Amirkhany, Anup P. Jose, Gaurav Malhotra, Younghoon Song, Mohamed Elzeftawi
  • Patent number: 11250785
    Abstract: It is an object to decrease the number of transistors connected to a capacitor. In a structure, a capacitor and one transistor are included, one electrode of the capacitor is connected to a wiring, and the other electrode of the capacitor is connected to a gate of the transistor. Since a clock signal is input to the wiring, the clock signal is input to the gate of the transistor through the capacitor. Then, on/off of the transistor is controlled by a signal which synchronizes with the clock signal, so that a period when the transistor is on and a period when the transistor is off are repeated. In this manner, deterioration of the transistor can be suppressed.
    Type: Grant
    Filed: March 24, 2021
    Date of Patent: February 15, 2022
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Atsushi Umezaki
  • Patent number: 11244614
    Abstract: A pixel driver circuit, a display device, and a pixel driving method are provided. The pixel driver circuit includes a driving module for providing a drive current to a pixel; a threshold voltage compensation module for providing threshold voltage compensation for the driving module; and a first switch module, a second switch module, a third switch module, and a fourth switch module, the terminals of each of which are electrically connected to various components in a particular manner. According to the embodiments of the present application, the threshold voltage of the driving transistor can be effectively compensated.
    Type: Grant
    Filed: March 13, 2020
    Date of Patent: February 8, 2022
    Assignees: CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Jing He, Chunmiao Tang, Ting Li, Zhonglin Cao, Yuanjie Xu, Pengcheng Zang, Yao Li
  • Patent number: 11244984
    Abstract: For the first type of display pixel, a display device determines a luminance value assigned from a first frame pixel to the green subpixel, a luminance value assigned from the first frame pixel to each of the two red subpixels to be a value lower than a luminance value for one red subpixel, and a luminance value assigned from the first frame pixel to each of the two blue subpixels to be a value lower than a luminance value for one blue subpixel. For the second type of display pixel, the display device determines a luminance value assigned from a second frame pixel to each of the red subpixel and the blue subpixel, and a luminance value assigned from the second frame pixel to each of the two green subpixels to be a value lower than a luminance value determined for one green subpixel.
    Type: Grant
    Filed: September 5, 2019
    Date of Patent: February 8, 2022
    Assignees: WUHAN TIANMA MICRO-ELECTRONICS CO., LTD., TIANMA JAPAN, LTD.
    Inventor: Yojiro Matsueda
  • Patent number: 11244611
    Abstract: The present disclosure relates to a pixel circuit and a method of driving the same, and a display device. A pixel circuit, including: a light emitting device; a driving sub-circuit configured to drive the light emitting device, the driving sub-circuit including a driving transistor configured to generate a driving current flowing through the light emitting device so that the light emitting device emits light; and a reset sub-circuit configured to reset a voltage between a gate electrode and a second electrode of the driving transistor.
    Type: Grant
    Filed: May 28, 2018
    Date of Patent: February 8, 2022
    Assignee: BOE Technology Group Co., Ltd.
    Inventor: Chengchung Yang
  • Patent number: 11221509
    Abstract: One or more embodiments of the present invention are directed to a liquid crystal display including: a first substrate and a second substrate facing each other; a first color pixel area, a second color pixel area, a third color pixel area, and a white pixel area on any one of the first substrate and the second substrate; and a liquid crystal layer between the first substrate and the second substrate. A first color filter is disposed in each of the first color pixel area and the white pixel area, and each of the first, second, third, and white pixel areas includes a plurality of domains, each two adjacent domains having a boundary between them, and the first color filter is disposed at at least one of the boundaries between the domains in the white pixel area.
    Type: Grant
    Filed: May 14, 2020
    Date of Patent: January 11, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Seok Kyu Yoon, Eun Ju Kim, Hyung June Kim, Byoung Sun Na, Sung Jae Park, Yun Seok Lee, Ik Soo Lee, Jun Pyo Lee, Wan-Soon Im, Jong Hak Hwang
  • Patent number: 11222933
    Abstract: A display panel equipped with function of detecting an object and an associated method are provided. The display panel includes a first photosensitive circuit, a second photosensitive circuit, a detection circuit, a first switch and a second switch. The first photosensitive circuit and the second photosensitive circuit accumulate first charges and second charges in response to first incident light and second incident light to generate a first signal and a second signal, respectively, wherein the object reflects light emitted from the display panel to generate the second incident light. The detection circuit discharges the first charges for converting the first signal into a reference signal on a first input terminal of the detection circuit, and the second signal is transmitted to a second input terminal of the detection circuit, to make the detection circuit to generate a detection signal indicating a difference between the second signal and the reference signal.
    Type: Grant
    Filed: April 28, 2020
    Date of Patent: January 11, 2022
    Assignee: HIMAX TECHNOLOGIES LIMITED
    Inventors: Yaw-Guang Chang, Jia-Ming He
  • Patent number: 11217176
    Abstract: A display device includes: a display panel including a first area and a second area, wherein the first area includes first sub-pixels, and the second area includes second sub-pixels; and a power supply unit that generates a first driving voltage and a second driving voltage greater than the first driving voltage to supply the first and second driving voltages to the display panel. The first sub-pixels receive the first driving voltage, and the second sub-pixels receive the first driving voltage or the second driving voltage.
    Type: Grant
    Filed: August 20, 2020
    Date of Patent: January 4, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Seung Chan Lee, Dong Hyun Kim, Hyeong Seok Kim, Young Wan Seo
  • Patent number: 11211014
    Abstract: A display panel, a display panel and a pixel circuit are proposed. The pixel circuit includes a first TFT, a second TFT, a first capacitor, a second capacitor, and a lighting device. The feedback compensation signal and the first control signal have a same phase but different directions. The second TFT includes a gate receiving a first control signal, a source receiving a data signal, and a drain electrically connected to the first node. The second capacitor includes a first end electrically receiving a feedback compensation signal and a second end electrically connected the first node. The feedback compensation signal has the same phase but different direction of the first control signal. This could realize the self-compensation mechanism of the pixel circuit and thus solve the non-uniformity issue of the conventional display panel and display device.
    Type: Grant
    Filed: September 12, 2019
    Date of Patent: December 28, 2021
    Inventors: Zhibin Han, Baixiang Han
  • Patent number: 11211445
    Abstract: The foldable display panel includes a substrate and a pixel array. The substrate has a surface and display and periphery areas thereon. The periphery area is on at least one side of the display area, and has first and second bonding areas. The first and second bonding areas are at opposite first and second sides of the periphery area, respectively. The first and second bonding areas are spaced apart by a first distance along a first direction. The substrate has a foldable line passing through a center of the display area between the first and the second bonding areas. The first and second sides are on two sides of the foldable line. The pixel array is on the display area and overlaps the foldable line. The pixel array is between the first and second sides and includes sub pixel units arranged in an array.
    Type: Grant
    Filed: June 24, 2020
    Date of Patent: December 28, 2021
    Assignee: AU OPTRONICS CORPORATION
    Inventors: Ming-Wei Lin, Pao-Yu Huang, Wen-Hui Lee
  • Patent number: 11211000
    Abstract: In a display device including: pixels including a light emitting unit and a plurality of transistors and two-dimensionally arranged in a matrix; and gate wirings of the plurality of transistors formed along a row direction of a pixel array, or an electronic device including the display device, among the plurality of transistors, a gate wiring of a switching transistor connected to an anode electrode of the light emitting unit is formed in a wiring layer different from a gate wiring of another transistor.
    Type: Grant
    Filed: July 14, 2017
    Date of Patent: December 28, 2021
    Assignee: Sony Semiconductor Solutions Corporation
    Inventors: Kiwamu Miura, Naobumi Toyomura
  • Patent number: 11205384
    Abstract: A display screen control method and a terminal for monitoring whether a terminal satisfies a low-power running condition, where a display screen of the terminal is an organic light emitting display screen, and each pixel unit of the organic light emitting display screen includes at least one red subpixel, at least one blue subpixel, and at least one green subpixel, and decreasing a frequency of any one or two of a drive signal of the red subpixel, a drive signal of the green subpixel, and a drive signal of the blue subpixel when it is detected that the terminal satisfies the low-power running condition.
    Type: Grant
    Filed: July 31, 2017
    Date of Patent: December 21, 2021
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventors: Yung Chi Wen, Gang Xu, Kaiyuan Ko
  • Patent number: 11200839
    Abstract: A system for equalizing the pixels in an array of pixels that include semiconductor devices that age differently under different ambient and stress conditions. The system extracts at least one pixel parameter from the array; creates a stress pattern for the array, based on the extracted pixel parameter; stresses the pixels in accordance with the stress pattern; extracts the pixel parameter from the stressed pixels; determines whether the pixel parameter extracted from the stressed pixels is within a preselected range and, when the answer is negative, creates a second stress pattern for the array, based on the pixel parameter extracted from the stressed pixels, stresses the pixels in accordance with the second stress pattern, extracts the pixel parameter from the stressed pixels, and determines whether the pixel parameter extracted from the stressed pixels is within the preselected range.
    Type: Grant
    Filed: August 27, 2018
    Date of Patent: December 14, 2021
    Assignee: Ignis Innovation Inc.
    Inventors: Gholamreza Chaji, Ricky Yik Hei Ngan, Nino Zahirovic
  • Patent number: 11195467
    Abstract: A pixel driving circuit and a display device are provided. The pixel driving circuit includes a voltage control circuit and a light-emitting time control circuit. The voltage control circuit is configured to control a voltage at a voltage writing node according to a first data voltage on a first data line; the light-emitting time control circuit is configured to connect the voltage writing node to a first electrode of a light-emitting device or disconnect the voltage writing node from the first electrode of the light-emitting device according to a second data voltage on a second data line and a reference voltage at a reference voltage terminal; and a second electrode of the light-emitting device is electrically connected to a first voltage terminal.
    Type: Grant
    Filed: July 1, 2020
    Date of Patent: December 7, 2021
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Han Yue, Can Zhang, Can Wang, Angran Zhang, Minghua Xuan
  • Patent number: 11169320
    Abstract: A light source member including a substrate, and a plurality of unit light source cells disposed on the substrate and arranged in a matrix, each of the unit light source cells including a light source driving electrode disposed on the substrate, a light source disposed on the substrate and electrically connected to the light source driving electrode, an organic layer disposed on the substrate and exposing the light source and at least a part of the light source driving electrode, the organic layer having an upper surface including a concavo-convex pattern, and a heat dissipation layer disposed on the organic layer and contacting the light source driving electrode.
    Type: Grant
    Filed: January 6, 2020
    Date of Patent: November 9, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Min Jeong Oh, Kwang Soo Bae, Beom Soo Park, Young Je Cho
  • Patent number: 11164504
    Abstract: A display panel of a display device includes a plurality of pixels each including a self-light-emitting element as a light source. In a non-display period of the display panel, the display panel detects deterioration data indicating the deterioration condition of the display panel. In the non-display period of the display panel, a host device of the display device generates a correction parameter for correcting the gradation value of each pixel of the input image based on the deterioration data obtained from the display panel.
    Type: Grant
    Filed: March 3, 2020
    Date of Patent: November 2, 2021
    Assignee: SHARP KABUSHIKI KAISHA
    Inventor: Takuya Okamoto
  • Patent number: 11158257
    Abstract: An object of the disclosure is to achieve a current-driven display device able to compensate for a variation in threshold voltage of a drive transistor without causing a variation in luminance. A pixel circuit includes a light-emitting element, a drive transistor, a power supply control transistor, a light emission control transistor, a first writing control transistor, a threshold voltage compensation transistor, a second writing control transistor, an initialization transistor, and a data-holding capacitor. During a data writing period, a scanning signal is active, an initialization voltage is supplied to a first electrode of the data-holding capacitor via the drive transistor, and a data voltage is supplied to a second electrode of the data-holding capacitor.
    Type: Grant
    Filed: March 19, 2018
    Date of Patent: October 26, 2021
    Assignee: SHARP KABUSHIKI KAISHA
    Inventor: Tetsuya Ueno
  • Patent number: 11151949
    Abstract: A display apparatus includes a display panel, a gate driver, a data driver, an emission driver and a driving controller. The display panel includes a gate line, a data line, an emission line and a pixel electrically connected to the gate line, the data line and the emission line. The gate driver outputs a gate signal to the gate line. The data driver outputs a data voltage to the data line. The emission driver outputs an emission signal to the emission line. The driving controller determines a number of emission in a single frame of the emission signal according to a luminance of a display image.
    Type: Grant
    Filed: September 22, 2020
    Date of Patent: October 19, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jong-Kwang Hwang, Byung Soo You
  • Patent number: 11120740
    Abstract: A display device includes: a display panel including a plurality of pixels; a power manager to provide a first power supply voltage to the display panel through a first power supply line, and a second power supply voltage to the display panel through a second power supply line, and to measure a first current flowing through the first power supply line and a second current flowing through the second power supply line; and a panel driver to provide a panel driving voltage to the display panel, and to control the panel driving voltage according to a current difference between the first current and the second current.
    Type: Grant
    Filed: September 25, 2020
    Date of Patent: September 14, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventor: Mi Kyung Kang
  • Patent number: 11114027
    Abstract: The present application discloses a pixel circuit, including a data-input sub-circuit configured to apply a data voltage from the data line to a first node; a reset sub-circuit configured to reset the second node; a driving-control sub-circuit coupled to a first power supply, the first node, and the second node; a power-storage sub-circuit configured to regulate a voltage difference between the first node and the second node; a light-emitting device coupled to the second node and a second power supply; and a sampling sub-circuit coupled to the data line and the second node and being configured to control the data line to connect with the second node for collecting a voltage signal containing information about electrical properties of the driving-control sub-circuit and being used to generating a compensation voltage for compensating any drifts of the electrical properties.
    Type: Grant
    Filed: November 21, 2017
    Date of Patent: September 7, 2021
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., Hefei Xinsheng Optoelectronics Technology Co., Ltd.
    Inventors: Can Yuan, Yongqian Li, Pan Xu, Zhidong Yuan, Zhenfei Cai
  • Patent number: 11100840
    Abstract: A display panel including a plurality of pixels is provided. The display panel includes: a plurality of light emitting elements configured to constitute each pixel of the plurality of pixels; and a plurality of pixel circuits respectively corresponding to the plurality of light emitting elements and configured to drive the plurality of light emitting elements, wherein the plurality of pixel circuits includes a first pixel circuit for pulse width modulation (PWM)-driving a first light emitting element among the plurality of light emitting elements and a second pixel circuit for pulse amplitude modulation (PAM)-driving a second light emitting element among the plurality of light emitting elements.
    Type: Grant
    Filed: March 27, 2020
    Date of Patent: August 24, 2021
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jinho Kim, Sangmin Shin, Youngki Jung
  • Patent number: 11100882
    Abstract: In a display device that adopts an SSD scheme, a demultiplexer circuit has provided for each source bus line, a compensating transistor whose first conduction terminal is connected to the source bus line and whose second conducting terminal is maintained in a floating state. In such a configuration, for example, at the same timing as a connection control transistor changes from an on state to an off state due to a change from a high level to a low level of a control signal that is supplied to a control terminal of the connection control transistor, a control signal that is supplied to a control terminal of the compensating transistor changes from the low level to the high level.
    Type: Grant
    Filed: December 28, 2020
    Date of Patent: August 24, 2021
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Yohei Takeuchi, Akira Tagawa, Yasuaki Iwase, Jun Nishimura
  • Patent number: 11093064
    Abstract: A touch panel display includes a pixel including an organic EL element, a first transistor electrically connected to the power supply line and the organic electroluminescence element, and a second transistor electrically connected to the data signal line and the first transistor, a touch sensor overlapping the pixel, and a shield electrode between the pixel and the touch sensor. The shield electrode includes an opening in a region overlapping with the second transistor, the third gate electrode is disposed inside the opening, and the third gate electrode and the fourth gate electrode are electrically connected, the first gate electrode is electrically connected to the shield electrode, and the second gate electrode is connected to a drain of the second transistor, and the shield electrode is grounded.
    Type: Grant
    Filed: May 5, 2020
    Date of Patent: August 17, 2021
    Assignee: MIKUNI ELECTRON CORPORATION
    Inventor: Sakae Tanaka
  • Patent number: 11081080
    Abstract: A display device includes: a host which transmits a first signal through a first interface, and transmits a second signal through a second interface different from the first interface; a display driver integrated circuit including a first interface unit which receives the first signal through the first interface, and a second interface unit which receives the second signal through the second interface; and a display panel which receives a data signal corresponding to the first signal and the second signal from the display driver integrated circuit, and displays an image.
    Type: Grant
    Filed: July 23, 2020
    Date of Patent: August 3, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Ho Seok Han, Hyun Gu Kim, Jun Yong Park
  • Patent number: 11069881
    Abstract: Provided is a flexible organic light-emitting diode display. The flexible organic light-emitting diode display includes a flexible substrate, a unit pixel and an anti-reflection layer. The unit pixel is disposed on the flexible substrate and includes an emission area and a non-emission area. The anti-reflection layer is disposed to correspond to the emission area except the non-emission area.
    Type: Grant
    Filed: November 30, 2018
    Date of Patent: July 20, 2021
    Assignee: LG Display Co., Ltd.
    Inventors: Jinhyun Jung, Seokwon Ji
  • Patent number: 11049474
    Abstract: A display device includes: a display including a gate line, a data line, and a pixel electrically coupled to the gate line and the data line; a controller configured to calculate a load of input data; a data driver configured to: generate a data signal corresponding to a grayscale value in the input data; and provide the data signal to the data line; a gate driver configured to: generate a gate signal having a pulse, based on a gate-on voltage; and provide the gate signal to the gate line; and a power supply configured to: provide the gate-on voltage to the gate driver; and vary the gate-on voltage based on the load, wherein the gate-on voltage has a voltage level for turning on the first transistor, and wherein a luminance of the display is increased as the load is increased.
    Type: Grant
    Filed: October 24, 2019
    Date of Patent: June 29, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Kyun Ho Kim, Sung In Kang
  • Patent number: 11037495
    Abstract: A display driver comprises drive circuitry and emission control circuitry. The display driver is configured to drive a display panel. The display panel may be a self-luminous display panel. The emission control circuitry is configured to generate a control signal to control the display panel during a first frame period to successively move a plurality of non-light-emitting areas successively inserted at an end of a display area of the display panel in a predetermined direction, the plurality of non-light-emitting areas having gradually changing widths in the predetermined direction.
    Type: Grant
    Filed: February 28, 2020
    Date of Patent: June 15, 2021
    Assignee: Synaptics Incorporated
    Inventors: Masao Orio, Hirobumi Furihata, Takashi Nose, Ken Sato, Nobuhiro Nagato
  • Patent number: 11036108
    Abstract: An array substrate includes a substrate, at least one first light-shielding layer disposed above the substrate, semiconductor retention layers disposed on a side of the at least one first light-shielding layer facing away from the substrate, and data lines disposed on a side of the plurality of semiconductor retention layers facing away from the at least one first light-shielding layer. One first light-shielding layer of the at least one first light-shielding layer is disposed between one semiconductor retention layer of the semiconductor retention layers and the substrate, and an orthographic projection of the first light-shielding layer on the substrate covers an orthographic projection of the semiconductor retention layer on the substrate. The data lines are in one-to-one correspondence with the semiconductor retention layers, and an orthographic projection of each data line on the substrate overlaps with an orthographic projection of a corresponding semiconductor retention layer on the substrate.
    Type: Grant
    Filed: March 27, 2020
    Date of Patent: June 15, 2021
    Assignees: HEFEI BOE DISPLAY TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yuntian Zhang, Peng Jiang, Ke Dai, Jingang Liu, Lihui Han, Zhonghou Wu, Chunxu Zhang, Mengmeng Li
  • Patent number: 11037508
    Abstract: The present disclosure provides a pixel driving circuit, a display panel and methods for driving the same. The pixel driving circuit includes: at least two driving sub-circuits, each configured to generate driving current based on a compensated data signal; at least two light-emitting control sub-circuits coupled to the at least two driving sub-circuits respectively, each of the at least two light-emitting control sub-circuits is configured to output driving current generated by one of the at least two driving sub-circuit coupled thereto; a writing control sub-circuit electrically coupled to the at least two driving sub-circuits and a data writing sub-circuit; and the data writing sub-circuit configured to compensate for a data signal and write the compensated data signal into the at least two driving sub-circuits sequentially under control of the writing control sub-circuit.
    Type: Grant
    Filed: April 24, 2020
    Date of Patent: June 15, 2021
    Assignees: CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD., BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Yang Li, Yunzhi Wang, Yun Luo, Xiaoming Feng, Minyang Deng
  • Patent number: 11024232
    Abstract: A pixel driving circuit and a driving method thereof, and a display panel are provided. The pixel driving circuit includes a driving sub-circuit, a reset sub-circuit, a light-emitting control sub-circuit, and a first compensation sub-circuit, the reset sub-circuit, the light-emitting control sub-circuit, and the first compensation sub-circuit are configured to, in an initialization phase, under control of a first driving signal and a second driving signal, provide the first power supply voltage provided by the first power supply input terminal to the control terminal of the driving sub-circuit; the first terminal of the driving sub-circuit is connected to the second power supply input terminal to receive the second power supply voltage; and the first power supply voltage and the second power supply voltage are configured to cause the driving sub-circuit to be in an on-bias state in the initialization phase.
    Type: Grant
    Filed: November 11, 2019
    Date of Patent: June 1, 2021
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xueling Gao, Kuanjun Peng, Wei Qin, Zhiqiang Xu, Tieshi Wang, Xiaolong Li, Jintao Peng
  • Patent number: 11018196
    Abstract: The present disclosure provides a display substrate and a display device. The display substrate comprises a base substrate and an anode, an organic light-emitting layer and a cathode formed on the base substrate sequentially, wherein the display substrate further comprises a plurality of functional patterns formed between the organic light-emitting layer and the anode, the plurality of functional patterns is divided into different types based on colors of a plurality of sub-pixels, and each type of the plurality of functional patterns is disposed in a region of the sub-pixel with a color corresponding to the type; the plurality of sub-pixels with different colors has different driving voltages, and a resistance value of each type of the plurality of the functional patterns in a direction perpendicular to the organic light-emitting layer is controlled to decrease as the driving voltage of the sub-pixel with the color corresponding to the type increases.
    Type: Grant
    Filed: September 28, 2017
    Date of Patent: May 25, 2021
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Jiewei Li, Xianjiang Xiong
  • Patent number: 11011107
    Abstract: A pixel circuit includes a compensation module, a resetting module, a writing module, a driver module, a light emission enabling module, and a light emitting device. The resetting module is configured to reset the driver module and the light emitting device; the compensation module performs threshold voltage compensation on the driver module; the writing module is configured to write, to the driver module, a data voltage that is output by a data line; the light emission enabling module is configured to provide a voltage of a first supply voltage end to the driver module; the driver module is configured to provide, under action of the voltage output by the first supply voltage end, a drive current to the light emitting device; and the light emitting device is configured to emit light based on the drive current. The pixel circuit is configured to drive to display a subpixel.
    Type: Grant
    Filed: April 10, 2017
    Date of Patent: May 18, 2021
    Assignee: HUAWEI TECHNOLOGIES CO., LTD.
    Inventor: Chun Yen Liu
  • Patent number: 11004395
    Abstract: A display device includes a base layer, first pixels, second pixels, a power supply line (PSL), a power supply voltage supply circuit (PSVSC), and a feedback wire (FBW). The base layer includes a display area (DA) and a non-display area (NDA) adjacent to the DA. The DA includes a first pixel area (PA) including first pixels and a second PA including second pixels. The second PA protrudes from the first PA. The PSL extends in at least a first direction in the DA. The PSL receives a first power supply voltage (PSV) through a first end of the PSL, and supplies the first PSV to the first and second pixels. The PSVSC supplies the first PSV to the PSL through the first end. The FBW is electrically connected to a second end of the PSL disposed in the second PA. The FBW feeds back the first PSV to the PSVSC.
    Type: Grant
    Filed: April 11, 2019
    Date of Patent: May 11, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Juhee Lee, Jongwoo Park, Youngtae Choi, Daeyoun Cho
  • Patent number: 11004370
    Abstract: A source driver integrated circuit of the present invention comprises: a sensing circuit for receiving a sensing signal for pixels through a sensing line connected to the pixels, converting the sensing signal so as to generate sensing data, and generating a fault signal if an abnormal signal that exceeds an input range is received from the sensing line; and a data driving circuit for receiving, from the data processing circuit, image data which is processed to be compensated according to the sensing data and a data control signal in which the fault signal is reflected, converting the image data so as to generate data voltage, and controlling supply of the data voltage to the pixels according to the data control signal.
    Type: Grant
    Filed: July 5, 2018
    Date of Patent: May 11, 2021
    Assignee: SILICON WORKS CO., LTD.
    Inventors: Jeong Hoon Choi, Dong Ju Kim, Su Hun Yang, Jung Bae Yun, Jeung Hie Choi
  • Patent number: 11004405
    Abstract: A light source apparatus includes a plurality of light source gate lines extending in a first direction, a plurality of light source data lines extending in a second direction crossing the first direction, a plurality of light source emission lines, a plurality of feedback lines and a plurality of light source blocks. At least one of the light source blocks is connected to the light source gate line, the light source data line, the light source emission line and the feedback line.
    Type: Grant
    Filed: December 23, 2019
    Date of Patent: May 11, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Kihyun Pyun, Moonshik Kang, Dae-Sik Lee, Jun Pyo Lee, Min-Soo Choi, Songyi Han
  • Patent number: 10978003
    Abstract: A display device includes a substrate, first pixels, second pixels, and third pixels. The substrate has a first pixel area, a second pixel area, and a third pixel area. The first pixels are in the first pixel area and are connected to first scan lines and first emission control lines. The second pixels are in the second pixel area and are connected to second scan lines and second emission control lines. The third pixels are in the third pixel area and are connected to third scan lines and third emission control lines. The second scan lines are spaced apart from the third scan lines, and the second emission control lines are spaced apart from the third emission control lines.
    Type: Grant
    Filed: August 19, 2019
    Date of Patent: April 13, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Yang Wan Kim, Seung Kyu Lee, Sun Ja Kwon, Tae Hoon Kwon, Byung Sun Kim, Hyun Ae Park, Su Jin Lee, Jae Yong Lee, Seung Ji Cha
  • Patent number: 10957253
    Abstract: A pixel includes a plurality of transistors, a storage capacitor, and an organic light emitting diode. A first transistor controls the amount of current from a first driving power source to the organic light emitting diode based on a data voltage. A second transistor is connected to a data line and is turned on based on a scan signal. A third transistor coupled to the first transistor and is turned on based on the scan signal. A first stabilizing transistor is coupled to the third transistor or between the first and third transistors and is turned off when the third transistor is turned off.
    Type: Grant
    Filed: December 10, 2019
    Date of Patent: March 23, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Chong Chui Chai, Dong Woo Kim, Kyoung Ju Shin, Bo Yong Chung
  • Patent number: 10957239
    Abstract: An output device is set to a first state in which a value of a first characteristic of the output device is set to a first value. Pixel adjustment values for plural gray levels are set to first pixel adjustment values in response to the output device being set to the first state. The value of the first characteristic is changed from the first value to a second value to set the output device to a second state. The pixel adjustment values for the plural gray levels are updated to second pixel adjustment values in response to the output device being set to the second state. The second pixel adjustment values are derived based on the second value of the first characteristic. Pixel values applied to a plurality of pixels of the output device are corrected based on the second pixel adjustment values.
    Type: Grant
    Filed: September 28, 2018
    Date of Patent: March 23, 2021
    Assignee: Apple Inc.
    Inventors: Kenneth I. Greenebaum, Gabriel Marcu, Arkady Ten, Ian C. Hendry
  • Patent number: 10943564
    Abstract: The present disclosure is directed to systems and methods of forming an expandable display device capable of maintaining a fixed pixel density at any display area from a relatively smaller first display area to a relatively larger second display area. The expandable display device includes an upper display layer and a lower display layer. In a first display position, the display elements having a defined pixel density included in the upper display layer obscure the display elements included in the lower display layer. The upper display layer and lower display layers are disposed on expandable substrates capable of continuous displacement between the first and second display positions. In the second display position, the display elements included in the lower display layer are visible through gaps between the display elements included in the upper display layer. The resultant display provides a uniform pixel density at all displacements between the first and second display positions.
    Type: Grant
    Filed: November 8, 2019
    Date of Patent: March 9, 2021
    Assignee: Intel Corporation
    Inventor: Chwee Lin Choong
  • Patent number: 10930214
    Abstract: A pixel circuit driving method is disclosed. The method including: a plurality of rows of pixel circuits are provided, each row of the pixel circuit includes a switch module, a driving module, a compensation module, an organic light emitting diode, a first scanning line, a second scanning line, and a data compensation line. The switch module is turned on to activate the driving module. The compensation module is turned off to enable a data terminal to output a data signal which is transmitted to the organic light emitting diode. The organic light emitting diode being activated, the compensation module being turned on via the second scanning line, and the switch module being turned off, thus to perform compensation detection on the organic light emitting diode. A compensation signal is outputted and transmitted to the organic light emitting diode for performing compensation after detection.
    Type: Grant
    Filed: June 17, 2019
    Date of Patent: February 23, 2021
    Assignee: SHENZHEN ROYOLE TECHNOLOGIES CO. LTD.
    Inventors: Wenhui Li, Ze Yuan
  • Patent number: 10902775
    Abstract: A driving circuit includes a current drive unit and a reset compensation and light emitting control circuit. The current drive unit includes a first transistor and a second transistor. The first transistor and the second transistor are connected in series, wherein the first transistor and the second transistor include a silicon semiconductor layer. The reset compensation and light emitting control circuit is coupled to the current drive unit. The reset compensation and light emitting control circuit includes a third transistor connected to a control terminal of the first transistor, wherein the third transistor is an oxide semiconductor transistor.
    Type: Grant
    Filed: May 14, 2019
    Date of Patent: January 26, 2021
    Assignee: INNOLUX CORPORATION
    Inventors: Lien-Hsiang Chen, Kung-Chen Kuo, Ming-Chun Tseng, Cheng-Hsu Chou, Kuan-Feng Lee