Electroluminescent Device Patents (Class 315/169.3)
  • Patent number: 11329116
    Abstract: A display device includes a first substrate including a display area in which a plurality of pixels are arranged and a light transmitting area disposed in the display area, an interlayer insulating layer covering the display area and exposing the light transmitting area, an inner sidewall of the interlayer insulating layer defining the light transmitting area, and an inorganic film disposed directly on the first substrate in the light transmitting area and overlapping the entire light transmitting area. A size of the light transmitting area is larger than a size of a pixel of the plurality of pixels.
    Type: Grant
    Filed: October 2, 2019
    Date of Patent: May 10, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Seok Hoon Seo, Dae Sang Yun, Che Ho Lee, So Yeon Jeong
  • Patent number: 11316001
    Abstract: A display device may include a display panel including a display area, a non-display area which may be disposed on a periphery of the display area, and a pad area which may be disposed on one side of the non-display area. The display panel may include data lines disposed in the display area of the display panel along a second direction which intersects a first direction, and connection lines disposed in the display area of the display panel along the first direction. A first data line among the data lines may be connected to a first connection line among the connection lines.
    Type: Grant
    Filed: March 10, 2020
    Date of Patent: April 26, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Seung Hwan Cho, Jong Hyun Choi, Ju Chan Park, Seung Min Song, Min Seong Yi
  • Patent number: 11316138
    Abstract: A manufacturing method of a display device, includes: providing a display module bendable at a bending area and including: a passivation film including a polyimide and disposed both in and outside of the bending area, and an adhesive layer attaching a display panel to the passivation film and including a first adhesive portion in the bending area and a second adhesive portion outside of the bending area; reducing an adhesive force of the first adhesive portion, by irradiating a first laser which is a CO2 laser to the adhesive layer at the bending area, to provide the first adhesive portion which has reduced adhesive force; providing a groove in the passivation film and the adhesive layer, along a boundary of the bending area; and removing the passivation film and the first adhesive portion which has the reduced adhesive force, from the display panel, at the groove.
    Type: Grant
    Filed: November 5, 2019
    Date of Patent: April 26, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Tae Hyun Sung, Woo Hyun Kim, Hyo Jin Kim
  • Patent number: 11308864
    Abstract: A micro light-emitting diode display device and a sub-pixel circuit thereof are provided. The sub-pixel circuit includes a switch unit, a selection driving unit and a light-emitting unit. The switch unit receives a data signal. The selection driving unit is electrically connected to the switch unit, and electrically connected to a first voltage. The light-emitting unit includes two micro light-emitting diodes, which are electrically connected to the selection driving unit. The first ends of the micro light-emitting diodes are connected to the selection driving unit. The second ends of the micro light-emitting diodes are electrically connected to a second voltage. The selection driving unit selects one of the micro light-emitting diodes to emit light according to the data signal transmitted through the switch unit.
    Type: Grant
    Filed: April 27, 2021
    Date of Patent: April 19, 2022
    Assignee: PLAYNIIRTDE DISPLAY CO., LTD.
    Inventors: Kuan-Yung Liao, I-Chung Chiu
  • Patent number: 11308877
    Abstract: Provided are a display driving device capable of accurately detecting characteristics of pixels of a display panel regardless of an offset of an amplifier, and a display device including the same. The display device includes a display panel including pixels and a display driving device including a sense circuit configured to detect pixel signals from the pixels. The sense circuit includes sense amplifiers configured to provide the first reference voltage to the pixels so that the pixels are programmed using a first reference voltage in a programming mode.
    Type: Grant
    Filed: November 20, 2020
    Date of Patent: April 19, 2022
    Assignee: Silicon Works Co., Ltd.
    Inventors: Jeong Lee, Sung Ha Kim, Yong Sung Ahn, Kyung Min Shin, Jung Ryeol Park
  • Patent number: 11302235
    Abstract: A display device including: a display panel including first and second display areas, the first display area including first pixels, the second display area including second pixels and a transmission area; a memory storing correction values of a pixel value; a controller generating corrected data by correcting image data using the correction values of the pixel value; and a data driver outputting a data signal corresponding to the corrected data to the display panel, wherein one of the correction values of the pixel value includes a pixel function value for illuminance of external light regarding one of the first pixels and the second pixels, the pixel function value makes a white color coordinate of the first display area equal to a white color coordinate of the second display area based on an external light characteristic, an external light reflection characteristic, and an emission characteristic.
    Type: Grant
    Filed: June 29, 2020
    Date of Patent: April 12, 2022
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Dukjin Lee, Beonghun Beon
  • Patent number: 11302241
    Abstract: Embodiments of the present disclosure provide a pixel circuit and a driving method thereof. The pixel circuit includes a data write circuit, which provides a data signal to a first node according to a control signal, a first control circuit, which provides a threshold compensation signal or an initialization signal to a second node according to the control signal, a capacitor, which stores a voltage difference between the first node and the second node, a second control circuit, which provides a first voltage signal to the driving circuit according to the control signal, a compensation circuit, which provides the threshold compensation signal to the first control circuit, a driving circuit, which provides a driving current to the light emitting device according to the voltage of the first node and the first voltage signal, and a light emitting device, which emits light according to the driving current.
    Type: Grant
    Filed: January 12, 2018
    Date of Patent: April 12, 2022
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Jiawei Qu
  • Patent number: 11302760
    Abstract: The embodiment of the present disclosure discloses an array substrate, a fabrication method thereof, and a display device. The array substrate includes: a base substrate and a plurality of pixel units on the base substrate, wherein the pixel unit includes a plurality of sub-pixels; and the sub-pixel includes an electroluminescent component, a pixel circuit and a photo detection circuit; the pixel circuit includes a drive transistor for driving the electroluminescent component to emit light, and the drive transistor is a low temperature poly-si thin film transistor; and the photo detection circuit includes a detection switch transistor and a PIN-type photodiode, and the detection switch transistor is a metal oxide transistor.
    Type: Grant
    Filed: April 19, 2019
    Date of Patent: April 12, 2022
    Assignee: BOE Technology Group Co., Ltd.
    Inventors: Ling Wang, Yi-Cheng Lin, Guang Yan
  • Patent number: 11289553
    Abstract: A display device includes a substrate including a display region and a peripheral region, display structures at the display region of the substrate, a plurality of blocking structures at the peripheral region of the substrate wherein the blocking structures have heights different from each other, an organic layer on the display structures and the blocking structures, and an inorganic layer on the organic layer.
    Type: Grant
    Filed: July 28, 2017
    Date of Patent: March 29, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Sun-Youl Lee, Yeon-Heok You, Sang-Won Seo, Jung-Ju Yu
  • Patent number: 11289041
    Abstract: The present disclosure provides a driving method of a display device and a display device. The driving method comprising: acquiring a pre-display image, wherein each of sub-pixels in the pre-display image corresponds to a predetermined grayscale voltage; displaying the same pre-display image in continuous m frame display cycles, wherein in at least one frame display cycle of the m frame display cycles, a drive voltage of a blue sub-pixel on a display panel of the display device is higher than the predetermined grayscale voltage corresponding to the blue sub-pixel; in at least one frame display cycle of the m frame display cycles, the drive voltage of the blue sub-pixel at a same position on the display panel is lower than the predetermined grayscale voltage corresponding to the blue sub-pixel.
    Type: Grant
    Filed: December 13, 2017
    Date of Patent: March 29, 2022
    Assignee: HKC CORPORATION LIMITED
    Inventor: Beizhou Huang
  • Patent number: 11289027
    Abstract: A light emitting display device includes a display panel, a structure for short detection, and a short detecting unit. The display panel displays an image. The structure for short detection includes a first power line, a second power line, and a short detection line disposed between the first power line and the second power line in the display panel. The short detecting unit senses a sensing value from the short detection line and determines whether a short occurs in the display panel on the basis of the sensing value.
    Type: Grant
    Filed: September 3, 2019
    Date of Patent: March 29, 2022
    Assignee: LG Display Co., Ltd.
    Inventor: Hongsuk Kim
  • Patent number: 11282437
    Abstract: The present disclosure provides a pixel circuit and a driving method thereof, and a display device. The pixel circuit includes: a light emitting element including an anode and a cathode electrically connected to a first voltage terminal; a control circuit; a first switching circuit configured to transmit a voltage from a data line; a driving circuit including: a first transistor, of which a control terminal, a first terminal and a second terminal are electrically connected to the first switching circuit, a second voltage terminal, and the control circuit respectively, and a capacitor, of which a first terminal and a second terminal are electrically connected to the second voltage terminal and the first switching circuit respectively; and a second switching circuit configured to be in a conductive state to stabilize a potential of the data line at a first fixed level or a second fixed level.
    Type: Grant
    Filed: March 13, 2019
    Date of Patent: March 22, 2022
    Assignee: BOE Technology Group Co., Ltd.
    Inventor: Xinshe Yin
  • Patent number: 11282468
    Abstract: A pixel circuit includes a liquid crystal capacitor, a memory circuit, a driving circuit, a mode-switching circuit, and a control circuit. The memory circuit is configured to store a status signal. The driving circuit includes a first terminal configured to receive a data voltage and a second terminal electrically coupled to a first terminal of the liquid crystal capacitor, and the driving circuit is configured to be ON or OFF according to a scan signal selectively. The mode-switching circuit is configured to be ON or OFF according to a mode-switching signal selectively. The control signal is electrically coupled to the mode-switching circuit at a first node, and is configured to control the voltage level of the first node corresponding to the status signal, and output a display voltage to the liquid crystal capacitor via the mode-switching circuit when the mode-switching circuit is ON.
    Type: Grant
    Filed: July 26, 2017
    Date of Patent: March 22, 2022
    Assignee: AU OPTRONICS CORPORATION
    Inventors: Jia-Show Ho, Che-Chia Chang, Ming-Hung Chuang
  • Patent number: 11256468
    Abstract: A display apparatus includes a display panel configured to display an image, a front member on a front surface of the display panel, a driving circuit on a rear surface of the display panel and connected to the display panel, a supporting frame configured to surround a side surface of the display panel and a side surface of the driving circuit, a first support supported by the supporting frame and on the rear surface of the display panel, and a vibration generating module supported by the first support to vibrate the display panel.
    Type: Grant
    Filed: September 17, 2019
    Date of Patent: February 22, 2022
    Assignee: LG Display Co., Ltd.
    Inventors: SeulKi Nam, Taehyung Kim, SunBok Song, Seunghyeon Kim
  • Patent number: 11257879
    Abstract: The present application relates to a display panel and a display device thereof. The display panel includes a base substrate and a number of display units disposed on the base substrate. The number of display units form a display region. A display region driving circuit is disposed on the display region of the base substrate and electrically connected to the number of display units so as to drive the number of display units. And a peripheral circuit is disposed on the base substrate at a periphery of the display region. The peripheral circuit includes a number of peripheral circuit units arranged side by side in a same direction. And the number of peripheral circuit units and the number of display units are respectively arranged correspondingly.
    Type: Grant
    Filed: June 14, 2019
    Date of Patent: February 22, 2022
    Assignee: KUNSHAN GO-VISIONOX OPTO-ELECTRONICS CO., LTD.
    Inventors: Xu Qin, Xiuqi Huang, Jinfang Zhang, Lu Zhang, Siming Hu, Zhenzhen Han
  • Patent number: 11249580
    Abstract: A touch display panel, a method for driving a touch display panel, and an electronic device are provided. The touch display panel includes a plurality of touch detection lines, a plurality of touch electrodes, a plurality of pixel units, and an insulating layer. The plurality of touch electrodes are in one-to-one correspondence with the plurality of touch detection lines, each of the plurality of pixel units includes a light emitting device, and the plurality of touch electrodes are configured to implement a touch function during a touch phase; and each of the plurality of touch electrodes is further configured to function as a cathode or an anode of the light emitting device to implement a display function during a display phase.
    Type: Grant
    Filed: May 7, 2018
    Date of Patent: February 15, 2022
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Weiyun Huang, Yue Long
  • Patent number: 11244631
    Abstract: A display device includes a display panel including data lines, gate lines which cross the data lines, and pixels; a gamma voltage generator configured to generate first to nth gamma voltages, n being an integer; and a data driver configured to generate data voltages by selecting the gamma voltages according to input image data, and to supply the data voltages to the data lines, wherein the gamma voltage generator comprises a first voltage dividing unit configured to divide a reference voltage; a first voltage dividing circuit configured to generate the first gamma voltage by selecting voltages output from the first voltage dividing unit according to a highest gamma register value; and a second voltage dividing circuit configured to generate the second to nth gamma voltages using the reference voltage.
    Type: Grant
    Filed: December 6, 2019
    Date of Patent: February 8, 2022
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Sunghoon Rha, Hyungguk Bae, Minsu Cho, Minkyu Jang
  • Patent number: 11238783
    Abstract: The present embodiments disclose a pixel and a display device including the same. A pixel according to an embodiment of the present disclosure includes a luminous element and a pixel circuit connected to the luminous element, wherein the pixel circuit includes a first pixel circuit configured to control light-emission and non-emission of the luminous element in response to a control signal applied to each of a plurality of subframes constituting a frame during a light-emitting period and a second pixel circuit storing a bit value of image data in a data writing period and generating the control signal based on the bit value and a clock signal in the light-emitting period.
    Type: Grant
    Filed: August 9, 2018
    Date of Patent: February 1, 2022
    Assignee: SAPIEN SEMICONDUCTORS INC.
    Inventor: Jae Hoon Lee
  • Patent number: 11238781
    Abstract: A display device may include: a first pixel coupled to a first scan line, a first data line, and a first sensing line; a second pixel coupled to the first scan line, a second data line, and a second sensing line; a first sensing channel corresponding to the first pixel and including a first sampling capacitor; and a second sensing channel corresponding to the second pixel and including a second sampling capacitor. During a first period, the first sensing channel may store a first sampling signal in the first sampling capacitor while the first sensing line is coupled to the first sensing channel, and the second sensing channel may store a second sampling signal in the second sampling capacitor while the second sensing line is disconnected from the second sensing channel.
    Type: Grant
    Filed: June 17, 2020
    Date of Patent: February 1, 2022
    Inventor: Sung Hwan Kim
  • Patent number: 11227551
    Abstract: The present disclosure provides a driving method and system for an OLED display panel. The driving method for the OLED display panel includes: controlling a gate line driving circuit of the display panel for each frame image to sequentially output a scanning signal to each gate line of the display panel; and when the gate line driving circuit of the display panel starts to output the scanning signal to one gate line, timing from a starting scanning time of the same scanning gate line; and after the scanning time of the current scanning gate line reaches a preset fixed scanning time, controlling the gate line driving circuit of the display panel to stop outputting the scanning signal to the current scanning gate line. Therefore, the present disclosure does not need to change the gamma curve when the refresh frequency is changed, and screen flicker will not occur, and a seamless dynamic refresh switching of the display panel is realized.
    Type: Grant
    Filed: April 21, 2020
    Date of Patent: January 18, 2022
    Assignee: Everdisplay Optronics (Shanghai) Co., Ltd
    Inventors: Keitaro Yamashita, Shaodong Ma, Shanglong Wang, Fei Shen
  • Patent number: 11222909
    Abstract: The present disclosure discloses a common-gate transistor, a pixel circuit, a pixel structure and a display panel, wherein the common-gate transistor includes: a first electrode region, a second electrode region and a third electrode region which are independently disposed, and a common gate region that is in contact with the first electrode region, the second electrode region, and the third electrode region; the common gate region, the first electrode region, and the second electrode region constitute a first transistor; and the common gate region, the first electrode region, and the third electrode region constitute a second transistor.
    Type: Grant
    Filed: May 11, 2018
    Date of Patent: January 11, 2022
    Assignee: Everdisplay Optronics (Shanghai) Co., Ltd
    Inventor: Xingyu Zhou
  • Patent number: 11222928
    Abstract: Pixel arrangements for full-color displays are provided in which the number of data lines per pixel is less than the number of colors of sub-pixels within each pixel. RGB1B2-type arrangements are provided in which activation of one blue sub-pixel deactivates or prevents activation of the other.
    Type: Grant
    Filed: March 23, 2020
    Date of Patent: January 11, 2022
    Assignee: Universal Display Corporation
    Inventor: Michael Hack
  • Patent number: 11222603
    Abstract: A display device and a driving method thereof are provided. The display device includes a display including a pixel including a double gate transistor and a light emitting diode, a power supply for supplying power to the display, a current sensor for sensing a current flowing in the display or in the light emitting diode, and a gate voltage controller for providing a bias voltage signal to one gate electrode of the double gate transistor.
    Type: Grant
    Filed: March 12, 2020
    Date of Patent: January 11, 2022
    Assignee: Samsung Display Co., Ltd.
    Inventors: Seong Heon Cho, Hae Kwan Seo, Seung Jae Lee
  • Patent number: 11222905
    Abstract: Provided are a pixel structure, an array substrate and a display device. The pixel structure includes a first group of TFTs, a second group of TFTs and a pixel electrode. First group of TFTs and second group of TFTs each include at least two TFTs. Source electrodes of all TFTs in first group of TFTs are connected to a same data line, drain electrodes of all TFTs in first group of TFTs are connected to sources electrodes of all TFTs in second group of TFTs, drain electrodes of all TFTs in second group of TFTs are connected to pixel electrode, and gate electrodes of all TFTs in first group of TFTs and gate electrodes of all TFTs in second group of TFTs are connected to a same gate line. A problem that whole pixel cannot work normally caused by the breakage of area where the channel is formed is avoided.
    Type: Grant
    Filed: February 12, 2018
    Date of Patent: January 11, 2022
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Tingliang Liu, Zhonglin Cao, Ting Li, Pengcheng Zang, Weiyun Huang, Jia Meng
  • Patent number: 11217181
    Abstract: The present application provides a pixel compensation circuit, a method for driving the same, and a display apparatus. The pixel compensation circuit includes a light emitting element, a current control sub-circuit and a reverse bias sub-circuit. The current control sub-circuit is coupled to a first terminal of the light emitting element and is configured to control current flowing between a first terminal and a second terminal of the light emitting element. The reverse bias sub-circuit is coupled to a first control signal line and a second terminal of the light emitting element respectively. The reverse bias sub-circuit is configured to set the second terminal of the light emitting element to be at a first bias voltage under the control of a signal on the first control signal line, so that the light emitting element is maintained in a reverse bias state.
    Type: Grant
    Filed: November 21, 2017
    Date of Patent: January 4, 2022
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Mengyu Luan, Xuehuan Feng, Xinfeng Wu, Youyuan Hu, Fei Li, Xinzhu Wang, Huihui Li, Qi Hu
  • Patent number: 11217152
    Abstract: The present invention provides a source driver for driving a light emitting diode panel. The source driver includes a buffer including an output terminal; and a plurality of driving circuits coupled to the buffer. Each of the plurality of driving circuits includes a constant current transistor including a gate controlled by a node voltage of the output terminal of the buffer; and a compensation unit for compensating the node voltage of the output terminal of the buffer.
    Type: Grant
    Filed: December 3, 2020
    Date of Patent: January 4, 2022
    Assignee: NOVATEK Microelectronics Corp.
    Inventors: Yu-Sheng Ma, Jhih-Siou Cheng, Chun-Fu Lin, Tso-Sheng Chan, Ren-Chieh Yang
  • Patent number: 11210998
    Abstract: A display device having a partially transparent substrate with a plurality of electrical consumers arranged in series having first and second contacts for applying a first and a second potential, and a third contact for receiving a control signal. A partially transparent electrically conductive layer electrically contacts the electrical consumers. A first and second connector for applying the first and the second potential to the conductive layer, and a third connector for applying the control signal. The conductive layer is attached to the transparent substrate with the three segments insulated from one another. A first and second segment are distanced from one another by a third segment. The first segment contacts the first connector and the first contact of one or more consumers, and the second segment contacts the second connector and the second contact of a consumers. The third segment contacts a third contact of an electrical consumer.
    Type: Grant
    Filed: March 26, 2019
    Date of Patent: December 28, 2021
    Assignee: Symonics GmbH
    Inventors: Christian Hoene, Herve Loridan
  • Patent number: 11211009
    Abstract: An electro-optical device includes a scan line, a data line, a pixel circuit provided at an intersection of the scan line and the data line, a first high potential line, a first low potential line, a second high potential line, and a second low potential line. The pixel circuit includes a light emitting device, a memory circuit disposed between the first high potential line and the first low potential line, a first transistor of N-type including a gate electrically connected to the memory circuit, and a second transistor disposed between the memory circuit and the data line. The light emitting device and the first transistor are disposed in series between the second high potential line and the second low potential line.
    Type: Grant
    Filed: July 13, 2020
    Date of Patent: December 28, 2021
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Mitsutoshi Miyasaka, Yoichi Momose
  • Patent number: 11206721
    Abstract: A system includes: a light emitting diode (LED); a switching circuit configured to: when in a first state, connect the anode of the LED to a positive potential and connect the cathode of the LED to a ground potential, thereby enabling current flow in a first direction through the LED; and when in a second state, one of: connect the ground potential to the anode of the LED; connect a negative potential to the anode of the LED; and connect the cathode of the LED to the positive potential and connect the anode of the LED to the ground potential, thereby enabling current flow in a second direction through the LED, where the second direction is opposite the first direction; and a driver module configured to selectively transition the switching circuit from the first state to the second state and from the second state to the first state.
    Type: Grant
    Filed: July 2, 2020
    Date of Patent: December 21, 2021
    Assignee: VEONEER US, INC.
    Inventor: Mehmet-Fatih Yilmaz
  • Patent number: 11200834
    Abstract: A display apparatus includes pixels arranged in a two-dimensional matrix pattern, each of which including a light-emitting unit and a drive circuit that drives the unit and includes a comparator circuit that compares a control pulse with potential based on signal voltage and outputs predetermined voltage based on the result, a transistor driving the unit in response to the predetermined voltage, and a current source that supplies current to the unit during driving of the transistor, includes a current-source transistor, a capacity unit connected to a gate electrode of the current-source transistor, a differential amplifier that detects a differential between voltage based on reference constant current and reference voltage, and a transistor controlling the voltage based on reference constant current depending on current flowing through the current-source transistor, and controls gate potential of the current-source transistor on the basis of output of the amplifier in synchronization with a scanning signal.
    Type: Grant
    Filed: August 5, 2015
    Date of Patent: December 14, 2021
    Assignee: Sony Semiconductor Solutions Corporation
    Inventors: Ken Kikuchi, Takaaki Sugiyama, Takehiro Misonou, Genichiro Oga, Takahiro Kita
  • Patent number: 11196433
    Abstract: A digital-to-analog conversion circuit includes an operational amplification module having an operational amplifier connected to an output transistor to form a negative feedback circuit to obtain equal voltages at positive and negative ends. A negative end current flowing into the negative end is proportional to a positive end current flowing into the positive end. An input end of a conversion module is connected in parallel with a first resistor of the operational amplification module to obtain the same voltage as the first resistor, and an analog current proportional to the negative end current and positive end current. An output end of the conversion module is connected with the source of the output transistor and configured to receive the analog current and to make the analog current flow to an output resistor via the drain of the output transistor, to obtain an output current proportional to the positive end current.
    Type: Grant
    Filed: December 25, 2020
    Date of Patent: December 7, 2021
    Assignee: SMARTER MICROELECTRONICS (GUANG ZHOU) CO., LTD.
    Inventors: Jiangtao Yi, Xin Zhang, Qiang Su, Chifeng Liu
  • Patent number: 11195894
    Abstract: A display apparatus is provided by the present invention, the display apparatus includes a first thin film transistor (TFT) disposed in a first pixel region and including a first semiconductor layer and a first gate electrode, where the semiconductor layer includes first source and drain regions; a second TFT disposed in a second pixel region adjacent the first pixel region and including a second semiconductor layer and a second gate electrode, where the second semiconductor layer includes a second source and drain regions; a first pixel electrode disposed in the first pixel region and including a first region where a first light-emitting layer is disposed and a second region extending from the first region and disposed on a first via hole; and a second pixel electrode disposed in the second pixel region and including a third region where a second light-emitting layer is disposed and a fourth region extending from the third region and disposed on a second via hole.
    Type: Grant
    Filed: September 22, 2020
    Date of Patent: December 7, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Junghun Yi, Seungkyu Lee, Wonkyu Kwak, Wonse Lee
  • Patent number: 11189227
    Abstract: The display panel includes an array substrate, and the array substrate includes pixel circuits arranged in an array. A first initialization module and a second initialization module are connected in series to an initialization signal terminal and a control terminal of the drive module, an output terminal of the second initialization module is electrically connected to the control terminal of the drive module; a control terminal of the first initialization module is used for receiving a first additional scan signal, and a control terminal of the second initialization module is used for receiving a first scan signal. Within at least one light emitting period of one frame duration, the end time of an active level pulse of the first additional scan signal is later than the end time of an active level pulse of the first scan signal.
    Type: Grant
    Filed: August 28, 2020
    Date of Patent: November 30, 2021
    Assignee: SHANGHAI TIANMA AM-OLED CO., LTD.
    Inventors: Mengmeng Zhang, Yana Gao, Xingyao Zhou, Ranran Zeng
  • Patent number: 11183541
    Abstract: A full-color display and techniques for fabrication thereof are provided. The display includes first and second continuous independently addressable organic emissive layers disposed over a single substrate or between two substrates or portions of a flexible substrate. The use of continuous emissive layers of a limited number of colors allows for a relatively high resolution display to be achieved without the use of fine metal masks or similar components.
    Type: Grant
    Filed: July 29, 2020
    Date of Patent: November 23, 2021
    Assignee: Universal Display Corporation
    Inventors: Michael Hack, Michael Stuart Weaver, William E. Quinn, Julia J. Brown
  • Patent number: 11181745
    Abstract: A change amount of illuminance of a luminescent color by a light-emitting element is acquired, and based on the change amount acquired for each luminescent color, drive power to be supplied to the light-emitting element of each luminescent color is calculated in order to reduce the change amount. In addition, light emission of each light-emitting element of each luminescent color is controlled with the calculated drive power to control display of the display unit.
    Type: Grant
    Filed: October 28, 2020
    Date of Patent: November 23, 2021
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Atsushi Amano
  • Patent number: 11177339
    Abstract: An organic light-emitting display device can include a low-level voltage line; a passivation layer that lies over the low-level voltage line; a planarization layer that lies over the passivation layer; an anode and an auxiliary electrode that lie on the planarization layer and the passivation layer, the auxiliary electrode is electrically connected to the low-level voltage line; a bank layer that lies over the anode, the planarization layer and the passivation layer and defines a light-emitting area; an organic emissive layer over the light-emitting area; and a cathode disposed on the organic light-emitting layer, in which the cathode is connected to a side of a protruding portion where the auxiliary electrode protrudes from the planarization layer.
    Type: Grant
    Filed: June 8, 2020
    Date of Patent: November 16, 2021
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Dohyung Kim, Jonghyeok Im, Jaesung Lee, Seungwon Yoo
  • Patent number: 11170721
    Abstract: A pixel circuit performs a threshold voltage correcting function. A sampling transistor becomes conductive in response to a control signal supplied from a scan line and samples a video signal supplied from a signal line to a pixel capacitor during a horizontal scanning period. The pixel capacitor applies an input voltage to a gate of a drive transistor in response to the sampled video signal. The drive transistor supplies an output current in accordance with the input voltage to a light-emitting device. A threshold voltage correcting period is provided to be part of the horizontal scanning period, to detect the threshold voltage of the drive transistor, and to write the threshold voltage in the pixel capacitor.
    Type: Grant
    Filed: February 19, 2019
    Date of Patent: November 9, 2021
    Assignee: Sony Corporation
    Inventors: Katsuhide Uchino, Junichi Yamashita
  • Patent number: 11158235
    Abstract: A color display panel and a control method thereof are provided. The color display panel includes pixel units arranged in an array, and each pixel unit at least includes a red sub-pixel unit, a green sub-pixel unit, a blue sub-pixel unit, and a white sub-pixel unit, where white light of the color display panel is achieved through the white sub-pixel unit. With aid of the above, the white light of the color display panel of the disclosure is realized by a single white sub-pixel unit, which can effectively alleviate color separation during mixing of red, green, and blue light of traditional display panels, and greatly improve the display effect of the display panel.
    Type: Grant
    Filed: July 22, 2019
    Date of Patent: October 26, 2021
    Assignees: Shenzhen Absen Optoelectronic Co., Ltd., Huizhou Absen Optoelectronic Co., Ltd.
    Inventors: Mengmeng Xu, Changjin Shi, Boxue Xie
  • Patent number: 11158250
    Abstract: The disclosure discloses a pixel compensation circuit, a method for driving the same, a display panel, and a display device. The pixel compensation circuit includes: a first initialization sub-circuit, a second initialization sub-circuit, an IR drop control sub-circuit, a data writing sub-circuit, a compensation sub-circuit, a driver sub-circuit, a light-emission control sub-circuit, and a light emitting element. The compensation sub-circuit compensates for threshold voltage of the driver sub-circuit, and the IR drop control sub-circuit decreases the influence of the IR drop of a signal of the high-level power supply terminal to the operating current of the light emitting element.
    Type: Grant
    Filed: October 9, 2018
    Date of Patent: October 26, 2021
    Assignees: BOE Technology Group Co., Ltd., Chengdu BOE Optoelectronics Technology Co., Ltd.
    Inventors: Yunsheng Xiao, Zhenxiao Tong, Xiangdan Dong, Tingliang Liu, Hongwei Ma
  • Patent number: 11139319
    Abstract: An array substrate and a display device are provided. The array substrate is provided with a display area and a non-display area, and the array substrate further includes a plurality of thin film transistors, a driving circuit, a plurality of polysilicon resistors, and a plurality of fan-out wires. The thin film transistor array is arranged in the display area, and each thin film transistor is provided with an input end. The driving circuit corresponds to the non-display area, and the driving circuit is provided with an output end. The polysilicon resistors and the fanout wires correspond to the non-display area. Two ends of each polysilicon resistor are respectively connected to the input end of a corresponding thin film transistor and the output end of the driving circuit through a corresponding fanout wire.
    Type: Grant
    Filed: November 5, 2018
    Date of Patent: October 5, 2021
    Inventor: Weixin Ma
  • Patent number: 11132937
    Abstract: A display driver for driving a display panel includes a first driving circuit configured to output a first image signal to a first output pad, and a second driving circuit configured to output a second image signal to a second output pad; and the first driving circuit is further configured to output a reference image signal to the second driving circuit in response to a power down signal, and the second driving circuit is further configured to output the reference image signal output from the first driving circuit to the second output pad in response to the power down signal.
    Type: Grant
    Filed: September 6, 2019
    Date of Patent: September 28, 2021
    Assignee: MagnaChip Semiconductor, Ltd.
    Inventors: Seung Jo Shin, Hyung Pil Kim
  • Patent number: 11128114
    Abstract: A power control apparatus can include a power circuit configured to transfer power to a load circuit. The apparatus can also include one or more environmental sensors configured to register environmental data including at least one of movement, hazardous gas, environmental temperature, environmental moisture, and collision data associated with the apparatus. The apparatus can also include a power controller circuit operatively connected to the one or more environmental sensors and the power circuit, the power controller circuit being configured to receive the environmental data from the one or more environmental sensors, determine whether the received environmental data exceeds a predetermined threshold, and in response to determining that the received environmental data exceeded a predetermined threshold, interrupting supply of power from the power circuit to the load circuit.
    Type: Grant
    Filed: November 13, 2018
    Date of Patent: September 21, 2021
    Assignee: Western Technology, Inc.
    Inventors: Michael Kralik, Alfred Neufeld, Brandon McLellan
  • Patent number: 11120724
    Abstract: Provided are a display device and a driving method thereof. The display device includes a display panel including a plurality of pixels defined by allowing a plurality of gate lines and a plurality of data lines to intersect each other; a timing controller generating a gate control signal, a data control signal, a MUX clock signal, and image data; a gate driving circuit sequentially providing gate signals to the plurality of gate lines based on the gate control signal; a data driving circuit supplying a data signal to the plurality of data lines based on the image data and the data control signal to drive the pixels; and a MUX circuit receiving the data signal and outputting the data signal in a time division manner to the data lines according to the MUX clock signal. The timing controller includes a slew rate control unit controlling a slew rate of the MUX clock signal.
    Type: Grant
    Filed: December 15, 2020
    Date of Patent: September 14, 2021
    Assignee: LG DISPLAY CO., LTD.
    Inventor: Daeyong Kim
  • Patent number: 11121247
    Abstract: A semiconductor device includes a semiconductor portion, a first insulating film, a second insulating film, a first contact, a second contact, and a gate electrode. The first insulating film is provided on the semiconductor portion. The second insulating film is contacting the first insulating film, is provided on the semiconductor portion, and is thicker than the first insulating film. A through-hole is formed in the second insulating film. The first contact has a lower end connected to the semiconductor portion. The second contact has a lower portion disposed inside the through-hole and a lower end connected to the semiconductor portion. The gate electrode is positioned between the first contact and the second contact, is provided on the first insulating film, and is provided on a portion of the second insulating film other than the through-hole.
    Type: Grant
    Filed: September 16, 2019
    Date of Patent: September 14, 2021
    Assignees: Kabushiki Kaisha Toshiba, Toshiba Electronic Devices & Storage Corporation
    Inventors: Tomoko Kinoshita, Daisuke Shinohara, Kanako Komatsu, Yoshiaki Ishii, Sudharsan Sundaram Prabhakaran
  • Patent number: 11094261
    Abstract: A pixel circuit includes a driving sub-circuit and a photosensitive detection circuit. The driving sub-circuit is coupled to a self-luminescent device. The driving sub-circuit is configured to drive the self-luminescent device to emit light. The photosensitive detection circuit is configured to detect a luminance of the self-luminescent device, and transmit an electrical signal for characterizing the luminance of the self-luminescent device to a signal readout terminal.
    Type: Grant
    Filed: March 6, 2019
    Date of Patent: August 17, 2021
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Xiaoliang Ding, Xue Dong, Haisheng Wang, Yingming Liu, Wei Liu, Changfeng Li
  • Patent number: 11094249
    Abstract: A display device includes a first light-emitting element connected to the first drive line and the first common line, a second light-emitting element connected to the first drive line and the second common line, and a sink driver connected to the first and second light-emitting elements via the first drive line. The sink driver is configured to alternatively take a selected state in which the sink driver pulls a current and an unselected state in which the sink driver does not pull a current. A second forward voltage of the second light-emitting element when voltage is supplied to the second common line and when the sink driver is in the unselected state is larger than a first forward voltage of the first light-emitting element when voltage is supplied to the first common line and when the sink driver is in the unselected state.
    Type: Grant
    Filed: April 16, 2020
    Date of Patent: August 17, 2021
    Assignee: NICHIA CORPORATION
    Inventor: Shun Nakamura
  • Patent number: 11087678
    Abstract: An organic light-emitting display includes a first pixel adjacent to a second pixel and a plurality of driving voltage lines to apply driving voltages to the first pixel and the second pixel. The driving voltage lines extend in a first direction crossing the first pixel and the second pixel and a second direction crossing the first direction. Each of the first and second pixels includes a first driving transistor and a second driving transistor that are symmetrical to each other with respect to a boundary between the first pixel and the second pixel, and a first compensation transistor and a second compensation transistor that are asymmetrical to each other with respect to the boundary.
    Type: Grant
    Filed: May 2, 2017
    Date of Patent: August 10, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jinwoo Park, Chaehan Hyun, Kimyeong Eom, Seungwoo Sung, Junghoon Shim, Minkyu Woo
  • Patent number: 11069878
    Abstract: A display unit including a first substrate and a second substrate that are disposed to face each other, a first organic insulating layer on the first substrate, a plurality of light-emitting elements arrayed in a display region, the display region on the first organic insulating layer and facing the second substrate and a first moisture-proof film covering the first organic insulating layer in a peripheral region, in which the peripheral region is provided on the first substrate and surrounds the display region.
    Type: Grant
    Filed: September 16, 2019
    Date of Patent: July 20, 2021
    Assignee: JOLED, INC.
    Inventors: Takatoshi Saito, Kenichi Izumi, Shinichi Teraguchi, Tadakatsu Nakadaira, Mikihiro Yokozeki, Shota Nishi, Manabu Kodate
  • Patent number: 11061295
    Abstract: A display device includes a first display area including a plurality of first pixel areas and a second display area including a plurality of second pixel areas and a plurality of light transmitting areas. Each of the plurality of first pixel areas includes at least one first pixel to display an image. Each of the plurality of second pixel areas includes at least one second pixel to display the image. The light transmitting area does not include a pixel capable of displaying the image and has higher light transmittance than the second pixel area. In the second display area, at least one of the plurality of light transmitting areas is between two second pixel areas adjacent in a first direction, and at least one of the plurality of light transmitting areas is between two second pixel areas adjacent in a second direction different from the first direction.
    Type: Grant
    Filed: October 18, 2019
    Date of Patent: July 13, 2021
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Hyun-Chol Bang, Won Kyu Kwak, Dong Wook Kim, Jin Woo Park, Sun-Ja Kwon
  • Patent number: RE48708
    Abstract: A design for an organic light-emitting display device that increases capacitor capacity and increases aperture ratio by forming an initializing voltage electrode on a different layer than an electrode of the capacitor and forming only one via hole for an entire set of three sub-pixels. One of the source electrodes and the drain electrodes of switching transistors for the three sub-pixels are formed in common, along with the gate electrodes of the switching transistors.
    Type: Grant
    Filed: June 29, 2018
    Date of Patent: August 24, 2021
    Assignee: Samsung Display Co., Ltd.
    Inventors: Hye-Jin Shin, Won-Kyu Kwak