Electroluminescent Patents (Class 345/76)
  • Patent number: 10354583
    Abstract: An electroluminescent (EL) display is disclosed. The EL display includes pixel units arranged in a matrix of N rows and M columns, N and M being natural numbers, scan lines configured to select pixel units of interest, data lines configured to provide data to selected pixel units, and a control line E_k configured to control immediately adjacent rows of pixel units coupled to (2k?1)-th and 2k-th scan lines, respectively, k being a natural number from 1 to N/2.
    Type: Grant
    Filed: February 22, 2017
    Date of Patent: July 16, 2019
    Assignee: INT TECH CO., LTD.
    Inventor: Shih-Song Cheng
  • Patent number: 10354595
    Abstract: An OLED (organic light-emitting diode) pixel structure comprises a substrate, first and second control components, first, second, and complementary electrode layers, and first and second light-emitting layers. The first and second control components are disposed above the substrate and electrically coupled to, respectively, the first and second electrode layers. There are first and second neighborhoods defined in the pixel structure, and the substrate traverses both of the neighborhoods. The first electrode layer is disposed in the first neighborhood and comprises a reflective layer. The first light-emitting layer is disposed on and electrically coupled to the first electrode layer. The second electrode layer is transparent and disposed in the second neighborhood. The second light-emitting layer is disposed on and electrically coupled to the second electrode layer. The complementary electrode layer is disposed on and electrically coupled to the light-emitting layers.
    Type: Grant
    Filed: February 14, 2018
    Date of Patent: July 16, 2019
    Assignee: AU OPTRONICS CORP.
    Inventor: Chia-Hwa Lee
  • Patent number: 10355062
    Abstract: An organic light emitting display is disclosed. In the disclosure, only one switching TFT among TFTs constituting a pixel is implemented as an NMOS type TFT, and at least some of a driving TFT and the remaining switching TFTs are implemented as a PMOS type TFT. Therefore, the disclosure simplifies TFT process steps and provides an organic light emitting display suitable for realizing a high resolution pixel implementation.
    Type: Grant
    Filed: August 16, 2017
    Date of Patent: July 16, 2019
    Assignee: LG Display Co., Ltd.
    Inventor: Jaesung Yu
  • Patent number: 10354574
    Abstract: To achieve versatility, a driver IC has a function of generating an analog data signal from an image signal input from the outside; a function of outputting the analog data signal from an output pin; and a function of setting the analog data signal as a data signal for alternating-current driving or for direct-current driving, in accordance with data of a digital signal input from the outside. For example, the driver IC can output data signals for alternating-current driving from output pins in odd-numbered columns and data signals for direct-current driving from output pins in even-numbered columns. Furthermore, the driver IC can output data signals for alternating-current driving or for direct-current driving from all the output pins. The driver IC can drive a liquid crystal panel, a self-luminous panel, and a hybrid display panel where one subpixel includes a liquid crystal element and a light-emitting element.
    Type: Grant
    Filed: September 13, 2016
    Date of Patent: July 16, 2019
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Hidetomo Kobayashi, Kei Takahashi
  • Patent number: 10353413
    Abstract: A voltage generation circuit includes a current source connected to a first node to generate a first internal current corresponding to a constant current, a comparison circuit generating a drive voltage whose level is controlled according to a voltage difference between the first node whose voltage level is controlled by the first internal current and a second node, and a charge supply circuit controlling an amount of charge supplied to the first and second nodes from a power supply voltage terminal according to a level of the drive voltage to generate a supply voltage.
    Type: Grant
    Filed: April 7, 2017
    Date of Patent: July 16, 2019
    Assignee: SK hynix Inc.
    Inventor: Byung Soo Kim
  • Patent number: 10354592
    Abstract: The invention provides an AMOLED pixel driver circuit, comprising: first TFT (T1), with top gate connected to first node (G), bottom gate connected to second node (B), source and drain connected respectively to high voltage power source (VDD) and third node (S); second TFT (T2), with gate connected to scan line (Scan), source and drain connected respectively to first node (G) and first data line (Data1); third TFT (T3), with gate connected to scan line (Scan), source and drain connected respectively to sense signal line (Sense) and third node (S); fourth TFT (T4), with gate connected to scan line (Scan), source and drain connected respectively to second node (B) and second data line (Data2); first capacitor (C), connected to second node (B) and high voltage power source (VDD); second capacitor Cst, connected to first node (G) and third node (S); OLED (D1), with anode connected to third node (S).
    Type: Grant
    Filed: November 16, 2017
    Date of Patent: July 16, 2019
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
    Inventor: Baixiang Han
  • Patent number: 10354582
    Abstract: A display device includes a scan driver to supply a scan signal via the scan lines, a data driver to supply data signals via a plurality of source channels, a demux circuit to selectively connect the data lines with the source channels; and a demux controller to control the demux circuit to simultaneously apply the data signals to different data lines between pixels of adjacent columns.
    Type: Grant
    Filed: May 26, 2016
    Date of Patent: July 16, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventor: Cheol Min Kim
  • Patent number: 10353261
    Abstract: The present application discloses a RGBW liquid crystal panel includes a plurality of scanning lines and a plurality of data lines, and a plurality of sub-pixel regions formed by the division of the plurality of scanning lines and the plurality of data lines; each sub-pixel region includes a sub-pixel and a thin film transistor, a gate electrode and a source electrode of each thin film transistor are connected to a scanning line and a data line, respectively, a drain electrode of each thin film transistor is connected to the sub-pixel; wherein, the plurality of sub-pixels includes a plurality of first white sub-pixels and a plurality of second white sub-pixels, the thin film transistor corresponding to the first white sub-pixel and the thin film transistor corresponding to second white sub-pixel have different channel width-length ratio, so that the first white sub-pixel and the second white sub-pixel have different luminance.
    Type: Grant
    Filed: September 21, 2017
    Date of Patent: July 16, 2019
    Assignee: Wuhan China Star Optoelectronics Technology Co., Ltd.
    Inventor: Zhenzhou Xing
  • Patent number: 10347181
    Abstract: The disclosure discloses a display panel, a display device, and a method for driving a pixel circuit, and the pixel circuit includes a data writing module, a light-emission control module, a driver control module, a threshold compensation module, an anode resetting module, a node initialization module, and an organic light-emitting diode. The threshold compensation module can compensate for drifting of threshold voltage of the driver transistor so that the pixel circuit can emit light and display while operating current of the driver transistor to drive the light-emitting element to emit light is only dependent upon a signal on the data line and voltage at a reference signal end, but independent of the threshold voltage and a first power source voltage end to thereby avoid the threshold voltage and an IR drop from affecting the current flowing through the organic light-emitting diode.
    Type: Grant
    Filed: October 10, 2017
    Date of Patent: July 9, 2019
    Assignee: SHANGHAI TIANMA AM-OLED CO., LTD.
    Inventors: Renyuan Zhu, Zeyuan Chen
  • Patent number: 10347165
    Abstract: An OLED panel may include a substrate including a first region and a second region disposed along a first direction. A plurality of first pixels are disposed in the first region on the substrate, the first pixels each having a first area, the first pixels each comprising a first unit pixel, a second unit pixel disposed along a second direction from the first unit pixel, and a transmission portion disposed along the first direction from the first unit pixel and the second unit pixel. A plurality of second pixels are disposed in the second region on the substrate, the second pixels each having a second area less than the first area, the second pixels each comprising a third unit pixel. The first unit pixel, the second unit pixel, and the third unit pixel may have substantially the same shape as each other.
    Type: Grant
    Filed: July 3, 2017
    Date of Patent: July 9, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jeong-Woo Moon, Jin-Koo Chung, Seong-Min Kim, Jin-Hyun Park, Chaun-Gi Choi
  • Patent number: 10347185
    Abstract: The present disclosure relates to an organic light-emitting diode (OLED) pixel circuit, a driving method thereof, and an OLED display. The OLED pixel circuit may include a first transistor, the storage capacitance, a second transistor, a light-emitting component, and a threshold compensation circuit. A control end of the first transistor connects to an input end of scanning signals, a first end of the first transistor connects to an input end of the data signals, and a second end of the first transistor connects to a first end of the storage capacitance. A control end of the second transistor connects to a second end of the storage capacitance, a first end of the second transistor connects to an input end of the first control signals, and a second end of the second transistor connects to a first end of the light-emitting component.
    Type: Grant
    Filed: September 21, 2017
    Date of Patent: July 9, 2019
    Assignee: Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd.
    Inventor: Xueshun Hou
  • Patent number: 10347189
    Abstract: A display device includes a display panel having a curved side or a polygonal side, the display panel including a plurality of pixels in a display region, a gate driver including a plurality of normal stages connected to each other for outputting gate signals to the pixels via a plurality of gate lines, and a plurality of dummy stages between some of the normal stages, and a data driver providing data signals to the pixels via a plurality of data lines.
    Type: Grant
    Filed: May 21, 2018
    Date of Patent: July 9, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jung-Bae Bae, So-Young Lee, Won-Se Lee
  • Patent number: 10349475
    Abstract: A receiver circuit is configured to receive a transmission signal represented by a change in DC voltage applied across power supply lines according to transmission data. The receiver circuit is also configured to compare the DC voltage (sampled value(s) of a detection voltage) with a threshold, thereby detecting a change in the DC voltage. The receiver circuit is further configured to calculate the threshold from a voltage value of the DC voltage (the sampled value(s) of a detection voltage) input to a receiver input unit.
    Type: Grant
    Filed: July 26, 2017
    Date of Patent: July 9, 2019
    Assignee: Panasonic Intellectual Property Management Co., Ltd.
    Inventors: Masashi Motomura, Hirofumi Konishi
  • Patent number: 10339863
    Abstract: A pixel circuit, a display device, and a drive method therefor. The pixel circuit comprises: a first power source (ELVDD), a second power source (ELVSS), an organic light-emitting diode (OLED), a first capacitor (C1), a first transistor (T1), a second transistor (T2), and a third transistor (T3), wherein the first transistor (T1) is configured to compensate a threshold voltage of the third transistor (T3). According to the drive method, the pixel circuit is driven to emit light by sequentially applying scanning signals to the pixel circuit on scanning lines (Sn1, Sn2, Sn3). The pixel circuit and the method for driving the pixel circuit can improve the response characteristics of active matrix organic light-emitting diodes, thereby enabling the display device to display images having uniform image quality.
    Type: Grant
    Filed: December 20, 2013
    Date of Patent: July 2, 2019
    Assignees: Kunshan New Flat Panel Display Technology Center Co., Ltd., Kunshan Go-Visionox Opto-Electronics Co., Ltd.
    Inventors: Hui Zhu, Yong Qiu, Xiuqi Huang, Xiaoyu Gao, Siming Hu, Zhenzhen Han
  • Patent number: 10339890
    Abstract: A display device having a driver that drives load lines in an electro-optical panel through capacitor charge redistribution is provided with a first driving capacitance circuit that drives the load lines, and a second driving capacitance circuit that drives output of a D/A conversion circuit for outputting a voltage corresponding to a driving voltage. Settling time of the output of the D/A conversion circuit is shortened by controlling the second driving capacitance circuit to set the output of the D/A conversion circuit to a desired output voltage.
    Type: Grant
    Filed: March 30, 2018
    Date of Patent: July 2, 2019
    Assignee: SEIKO EPSON CORPORATION
    Inventor: Akira Morita
  • Patent number: 10339859
    Abstract: The present invention provides an AMOLED pixel driving circuit and a pixel driving method. The AMOLED pixel driving circuit comprises: a first, a second, a third, a fourth, a fifth, a sixth thin film transistors (M1, M2, M3, M4, M5, M6), a first, a second capacitors (C1, C2) and an organic light emitting diode (D1); wherein the third thin film transistor (M3) is a mirror thin film transistor, and the fourth thin film transistor (M4) is a drive thin film transistor, and the second thin film transistor (M2) is located between the third and the fourth thin film transistors (M3, M4). By controlling activation and deactivation of the second thin film transistor (M2) according to time sequence with the restore signal (Restore), the source voltage of the third thin film transistor (M3) is controlled to be pulled down to the earth voltage level (GND) in the restore stage to ensure that ensure that the gate-source voltages of the third, the fourth thin film transistors (M3, M4) are equal.
    Type: Grant
    Filed: April 1, 2015
    Date of Patent: July 2, 2019
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Chenglei Nie
  • Patent number: 10339847
    Abstract: A display apparatus including a display panel and a driver circuit is provided. The display panel includes a display region and a non-display region. The non-display region includes a plurality of dummy pixels connected to one another. The driver circuit provides gate driving voltages and a test data voltage, so as to make the dummy pixels connected to one another generate a charging rate test signal in response to the test data voltage.
    Type: Grant
    Filed: October 18, 2017
    Date of Patent: July 2, 2019
    Assignee: E Ink Holdings Inc.
    Inventors: Wen-Yu Kuo, Guan-Ru Huang, Pei-Lin Huang, Wei-Tsung Chen
  • Patent number: 10338730
    Abstract: The present disclosure relates to a display device and a timing controller. The display device includes a panel on which a number of subpixels are disposed and a characteristic sensing circuit sensing characteristic values of the number of subpixels. When a difference between the characteristic value of a specific subpixel among the number of subpixels and a reference value exceeds a predetermined range, the characteristic sensing circuit generates coordinate data of the specific subpixel. The display device includes a host controller recognizing a user manipulation based on the coordinate data.
    Type: Grant
    Filed: December 20, 2016
    Date of Patent: July 2, 2019
    Assignee: LG Display Co., Ltd.
    Inventor: SeYoung Kim
  • Patent number: 10339880
    Abstract: Provided is a drive method of a RGBW four primary colors display panel, for a drive architecture of driving eight columns of sub pixels by two source drive lines with multiplexing, adjusting an enable sequence of a red, a green, a blue and a white sub pixel switch control signals in a multiplex module to make that a duration of a portion of pulse high voltage levels in at least two sub pixel switch control signals is ½ of a duration of a pulse high voltage level of a gate scan signal, and middle points of the portion of pulse high voltage levels are aligned with a rising edge of one of three adjacent gate scan signals and a falling edge of one of the other two gate scan signals to reduce a switch frequency of a corresponding sub pixel switch control signal.
    Type: Grant
    Filed: December 27, 2016
    Date of Patent: July 2, 2019
    Assignee: WUHAN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Zhenzhou Xing, Feilin Ji, Taisheng An
  • Patent number: 10333101
    Abstract: A display apparatus includes a first substrate corresponding to an active area, and a sealing area surrounding the active area, a second substrate facing the first substrate, a display portion in the active area, a sealing member in the sealing area between the first substrate and the second substrate, and a guide mark on one surface of the second substrate in an area where the sealing member and the second substrate overlap each other.
    Type: Grant
    Filed: November 7, 2016
    Date of Patent: June 25, 2019
    Assignee: Samsung Display Co. Ltd.
    Inventors: Jaewook Shin, Hyunchul Lee, Seungjoon Yoo, Dongjin Kim, Jeonghyuk Park, Soojeong Choi, Wonju Choi
  • Patent number: 10325976
    Abstract: The present invention discloses a display panel. The display panel, comprises a substrate. The substrate includes a plurality of display areas and a plurality of non-display areas surrounded by the display areas, wherein each of the display areas is divided into at least two sub display areas along a predetermined direction; a boundary between the sub-display areas is a straight line or a polyline; and a plurality of organic light emitting diodes is disposed in the sub-display areas; and a plurality of powerlines, disposed on the periphery of each of the sub-display areas, wherein the powerlines are located in the non-display areas; the powerlines on the periphery of display areas are independent from each other and a power voltage is applied on the organic light emitting diodes of each of the sub-display areas via the powerlines so that each of the organic light emitting diodes receives the same power voltage.
    Type: Grant
    Filed: November 28, 2017
    Date of Patent: June 18, 2019
    Assignee: WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
    Inventor: Mian Zeng
  • Patent number: 10324344
    Abstract: A liquid crystal display panel and its driving circuit, manufacturing method are disclosed. The driving circuit has a first switching element. The first terminal of the first switching element is connected to one data line of the liquid crystal display panel. At the array manufacturing process stage, the control terminal of the first switching element is input a first reference voltage. The second terminal of the first switching element is connected to a first discharge circuit. During the stage to drive the liquid crystal display panel to display or to test the liquid crystal display panel, the control terminal of the first switching element is input a first control signal. The second terminal of the first switching element is input a data signal. By the aforementioned ways, it can simultaneously achieve an ESD protection and to save the panel space to be favorable for narrow frame design.
    Type: Grant
    Filed: December 24, 2018
    Date of Patent: June 18, 2019
    Assignees: Shenzhen China Star Optoelectronics Technology Co., Ltd., Wuhan China Star Optoelectronics Technology Co., Ltd.
    Inventors: Cong Wang, Peng Du
  • Patent number: 10325537
    Abstract: A system reads a desired circuit parameter from a pixel circuit that includes a light emitting device, a drive device to provide a programmable drive current to the light emitting device, a programming input, and a storage device to store a programming signal. One embodiment of the extraction system turns off the drive device and supplies a predetermined voltage from an external source to the light emitting device, discharges the light emitting device until the light emitting device turns off, and then reads the voltage on the light emitting device while that device is turned off. The voltages on the light emitting devices in a plurality of pixel circuits may be read via the same external line, at different times.
    Type: Grant
    Filed: June 20, 2018
    Date of Patent: June 18, 2019
    Assignee: Ignis Innovation Inc.
    Inventors: Gholamreza Chaji, Ricky Yik Hei Ngan, Nino Zahirovic, Yaser Azizi
  • Patent number: 10319306
    Abstract: A pixel includes an organic light emitting diode (OLED), a pixel circuit, and first and second transistors. The OLD includes a cathode electrode connected to a second power source. The pixel circuit includes a driving transistor having a gate electrode initialized by a third power source. The driving transistor controls the amount of current flowing from a first power source to the second power source via the OLED. The first transistor is connected between a fourth power source and the second power source and an anode electrode of the OLED. The first transistor is turned on based on a scan signal is supplied to a scan line. The second transistor is connected between a data line and the pixel circuit. The second transistor is turned on when the scan signal is supplied to the ith scan line.
    Type: Grant
    Filed: May 22, 2017
    Date of Patent: June 11, 2019
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jin Tae Jeong, Min Ku Lee, Ji Hyun Ka, Tae Hoon Kwon, Seung Kyu Lee, Seung Ji Cha
  • Patent number: 10319335
    Abstract: An image processor includes a frame buffer configured to collect an image data of pixels and configured to generate frame data, a display controller configured to generate the frame update command based on a vertical synchronizing signal and a frame per second signal representing a number of activating of the frame update signal in a second and an operating part configured to generate the vertical synchronizing signal and the image data. When the frame data is generated, the frame buffer activates a frame update signal in response to a frame update command and outputs the frame data. When the frame per second signal is less than a predetermined threshold voltage, the operating part sets a lower limit of a range of a frequency to a predetermined minimum frequency.
    Type: Grant
    Filed: October 11, 2016
    Date of Patent: June 11, 2019
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Kyung-Min Park
  • Patent number: 10319292
    Abstract: Provided is a driving system for a display device and a driving circuit applicable to an OLED, which belong to the field of display technology, and can eliminate the phenomenon of shortening in lifetime of the OLED caused by a long-term DC bias light-emitting state of the OLED.
    Type: Grant
    Filed: October 10, 2015
    Date of Patent: June 11, 2019
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Zhenling Wang, Tai Jiun Hwang
  • Patent number: 10319304
    Abstract: The present invention provides an OLED pixel driving circuit and a pixel driving method. The OLED pixel driving circuit utilizes the 7T2C structure, and comprises a first N type thin film transistor (T1), a second N type thin film transistor (T2), a third N type thin film transistor (T3), a fourth N type thin film transistor (T4), a fifth P type thin film transistor (T5), a sixth N type thin film transistor (T6), a seventh P type thin film transistor (T7), a first capacitor (C1), a second capacitor (C2) and an organic light emitting diode (D1), and the first scan signal (Scan1), the second scan signal (Scan2), the third scan signal (Scan3), the light emitting control signal (EM) and the data signal (Data) are combined with one another to correspond to a reset stage, a threshold voltage detection stage, a program stage and a light emitting stage one after another.
    Type: Grant
    Filed: March 16, 2017
    Date of Patent: June 11, 2019
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
    Inventors: Jimu Kuang, Yichien Wen
  • Patent number: 10319293
    Abstract: The present disclosure provides a circuit and a method for driving AMOLED pixels, The circuit includes a first transistor; a second transistor; a gray-scale storage capacitor; and a threshold storage capacitor, one end thereof being connected to the other end of the gray-scale storage capacitor, and the other end thereof being connected to a drain of the second transistor for storing a threshold voltage of the second transistor.
    Type: Grant
    Filed: January 10, 2017
    Date of Patent: June 11, 2019
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Limin Wang
  • Patent number: 10318081
    Abstract: A touch display device and a driving method are disclosed. The touch display device includes a liquid crystal display panel having a plurality of self-capacitive electrodes and an electroluminescent display panel arranged under the liquid crystal display panel. The self-capacitive electrodes in the liquid crystal display panel and a cathode in the electroluminescent display panel constitute capacitive structures.
    Type: Grant
    Filed: September 5, 2016
    Date of Patent: June 11, 2019
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Haisheng Wang, Xue Dong, Hailin Xue, Xiaochuan Chen, Shengji Wang, Xiaoliang Ding, Yingming Liu, Weijie Zhao, Changfeng Li, Wei Liu, Pengpeng Wang, Rui Xu
  • Patent number: 10319915
    Abstract: Provided is a compound for an EBL capable of improving the light emitting efficiency, stability and life span of a device, and an organic electric element and an electronic device using the same.
    Type: Grant
    Filed: February 8, 2017
    Date of Patent: June 11, 2019
    Assignee: DUK SAN NEOLUX CO., LTD.
    Inventors: Jong Gwang Park, Yun Suk Lee, Ki Ho So, Hyoung Keun Park, Yeon Seok Jeong, Jung Hwan Park, Sun Hee Lee, Gyu Min Lee
  • Patent number: 10319752
    Abstract: An array substrate includes a substrate, a first insulator layer on the substrate, a second insulator layer on the first insulator layer, a third insulator layer on the second insulator layer, and a first TFT and a second TFT on the substrate. The second TFT includes a second gate electrode on the first insulator layer, a second channel layer on the second insulator layer, and a second source electrode and a second drain electrode on the third insulator layer. The third insulator layer covers the second channel layer and defines a second source hole and a second drain hole.
    Type: Grant
    Filed: August 31, 2016
    Date of Patent: June 11, 2019
    Assignee: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: Yi-Chun Kao, Hsin-Hua Lin
  • Patent number: 10319948
    Abstract: An organic light emitting diode display device is provided. The organic light emitting diode display device includes a first insulating layer disposed on a substrate and having a first refractive index, a refraction inducing layer disposed on the first insulating layer having a second refractive index, a second insulating layer disposed on the refraction inducing layer and having a third refractive index, a first electrode disposed on the second insulating layer and having a fourth refractive index, and an organic light emitting layer and a second electrode disposed on the first electrode. The second insulating layer, the first electrode, the organic light emitting layer, and the second electrode include a plurality of convex parts and a plurality of concave parts.
    Type: Grant
    Filed: August 21, 2018
    Date of Patent: June 11, 2019
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Sookang Kim, Soyoung Jo, Wonhoe Koo, Jihyang Jang, Hyunsoo Lim
  • Patent number: 10319300
    Abstract: There is provided a display device including a display panel including a first display area and a second display area that include a plurality of pixels, a scan driver configured to provide a scan signal to the pixels, the scan driver being at least partially between the first display area and the second display area, a data driver configured to provide a data signal to the pixels, an emission controller configured to provide an emission control signal to the pixels, the emission controller being at a side of the first display area and at a side of the second display area, and a timing controller configured to generate a control signal that controls the scan driver, the data driver, and the emission controller.
    Type: Grant
    Filed: March 11, 2016
    Date of Patent: June 11, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jun-Yong An, Ju-Hee Hyeon
  • Patent number: 10311800
    Abstract: An electro-optical device is provided with a plurality of data lines, a plurality of potential lines supplied with a predetermined potential, a driving transistor controlling a current level according to the voltage between the gate and the source, a first storage capacitor which holds the voltage between the gate and a source of the driving transistor, and a light-emitting element. One data line among the plurality of data lines and one potential line among the plurality of potential lines are arranged to be adjacent to each other, and a second storage capacitor holding the potential of the one data line is formed by the one data line and the one potential line.
    Type: Grant
    Filed: April 23, 2018
    Date of Patent: June 4, 2019
    Assignee: SEIKO EPSON CORPORATION
    Inventors: Toshiyuki Kasai, Takeshi Nomura
  • Patent number: 10311789
    Abstract: A pixel circuit includes a selection transistor, a driving transistor, an emissive element, a first capacitor, and a reference transistor. The selection transistor is coupled to a gate line and a data line. A control electrode of the driving transistor is coupled to the selection transistor and a first electrode of the driving transistor is coupled to a power source line. The emissive element emits light according to a current drawn from the driving transistor. The first capacitor is coupled to the driving transistor and an emission signal line. A control electrode of the reference transistor is coupled to a reference signal line providing a selectable voltage with a first predetermined level and a second predetermined level. A first electrode of the reference transistor is coupled to the control electrode of the driving transistor.
    Type: Grant
    Filed: January 17, 2018
    Date of Patent: June 4, 2019
    Assignee: AOT LIMITED
    Inventors: Keiichi Sano, Ryuji Nishikawa
  • Patent number: 10311788
    Abstract: An organic light-emitting display includes a driving transistor that drives an organic light-emitting diode, a first transistor connected between a data line supplying a data voltage and a gate electrode of the driving transistor, a second transistor connected between a reference voltage input line and a source electrode of the driving transistor, and a third transistor that directly charges the gate electrode of the driving transistor with a reference voltage supplied from the reference voltage input line, in response to a black data control signal, wherein the third transistor directly receives the reference voltage by being turned on for a certain period of time after the gate electrode of the driving transistor is programmed with the data voltage in one frame before receiving a data voltage in the next frame.
    Type: Grant
    Filed: November 17, 2017
    Date of Patent: June 4, 2019
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Myunggi Lim, Kyoungdon Woo, Jaeyoon Bae
  • Patent number: 10311787
    Abstract: The present disclosure provides a pixel driving circuit, a driving method, a pixel unit, and a display apparatus. The pixel driving circuit includes a driving transistor, a charging/discharging circuitry, a light-emitting control circuitry, a data write-in control circuitry, and a charging/discharging control circuitry, where a first electrode of the charging/discharging circuitry is connected to a second electrode of the driving transistor, and the charging/discharging control circuitry is configured to enable a first electrode of the driving transistor to be electrically connected to a second level output terminal under the control of a data line, and enable a second terminal of the charging/discharging circuitry to be electrically connected to a gate electrode of the driving transistor under the control of a first scan line.
    Type: Grant
    Filed: October 4, 2017
    Date of Patent: June 4, 2019
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Maoxiu Zhou, Haipeng Yang, Ke Dai, Yongjun Yoon, Zhou Rui
  • Patent number: 10312374
    Abstract: The present invention provides a circuit substrate exhibiting an excellent transmittance and being capable of suitably repair broken conductive lines; and a display device.
    Type: Grant
    Filed: September 24, 2013
    Date of Patent: June 4, 2019
    Assignee: Sharp Kabushiki Kaisha
    Inventor: Ryohki Itoh
  • Patent number: 10311783
    Abstract: The present disclosure provides a pixel circuit, a method for driving the same, a display panel and a display device. The pixel circuit includes a writing module configured to write a signal from a data signal end into a first node, a switch module configured to electrically connected the first node to a second node, a power input module configured to input a signal from a first power signal end into the second node, a resetting module configured to output a signal from a reference signal end to a third node and a fourth node, a driving module configured to output a signal from the second node to the fourth node, and a first maintenance module configured to stabilize potentials at the first node and the second node through the signals from the first node and the second node.
    Type: Grant
    Filed: August 2, 2016
    Date of Patent: June 4, 2019
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Zhanjie Ma, Tuo Sun
  • Patent number: 10311793
    Abstract: A display apparatus includes a plurality of pixels. A pixel includes a first capacitor connected between a first voltage line receiving a first driving signal and a first node, a first transistor comprising a control electrode connected to the first node, a first electrode connected to a second voltage line receiving a first power source signal and a second electrode connected to a second node, an organic light emitting diode comprising an anode electrode connected to the second node and a cathode electrode receiving a second power source signal, a second capacitor connected between an m-th data line and the second node (wherein, ‘m’ is a natural number) and a second transistor comprising a control electrode connected to an n-th scan line (wherein, ‘n’ is a natural number), a first electrode connected to the first node and a second electrode connected to the second node.
    Type: Grant
    Filed: January 6, 2017
    Date of Patent: June 4, 2019
    Assignees: SAMSUNG DISPLAY CO., LTD., INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY
    Inventors: Chong-Chul Chai, Oh-Kyong Kwon, Nack-Hyeon Keum, Kyong-Hwan Oh, Young-Wan Seo, Yong-Koo Her, In-Jae Hwang
  • Patent number: 10304402
    Abstract: A semiconductor device where delay or distortion of a signal output to a gate signal line in a selection period is reduced is provided. The semiconductor device includes a gate signal line, a first and second gate driver circuits which output a selection signal and a non-selection signal to the gate signal line, and pixels electrically connected to the gate signal line and supplied with the two signals. In a period during which the gate signal line is selected, both the first and second gate driver circuits output the selection signal to the gate signal line. In a period during which the gate signal line is not selected, one of the first and second gate driver circuits outputs the non-selection signal to the gate signal line, and the other gate driver circuit outputs neither the selection signal nor the non-selection signal to the gate signal line.
    Type: Grant
    Filed: November 26, 2018
    Date of Patent: May 28, 2019
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Hajime Kimura, Atsushi Umezaki
  • Patent number: 10304384
    Abstract: According to an aspect, a display apparatus includes a plurality of pixels including light-emitting elements, a video signal driver that applies a video voltage or an initialization voltage to the pixels based on a video signal, a scan signal driver that applies a scan voltage to the pixels based on the video signal, and a controller that controls an initialization period in which the initialization voltage is applied to the pixels and a video voltage writing period in which the video voltage is applied to the pixels, in accordance with the tone of the video signal.
    Type: Grant
    Filed: November 1, 2017
    Date of Patent: May 28, 2019
    Assignee: Japan Display Inc.
    Inventor: Keiichi Saito
  • Patent number: 10297184
    Abstract: A method of driving a display device includes calculating an average load and an asymmetry by analyzing an input image data, and adjusting at least one of a high data voltage and a low data voltage, which are supplied to a display panel of the display device, based on the average load and the asymmetry.
    Type: Grant
    Filed: September 22, 2015
    Date of Patent: May 21, 2019
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Il-Hun Jeong, Jae-Hoon Lee
  • Patent number: 10297196
    Abstract: A pixel circuit, a driving method, and array substrate, the pixel circuit includes a plurality of sub-pixel units each of which includes an input sub-circuit, a driving sub-circuit, a light emitting control sub-circuit, and a level maintaining sub-circuit; the input sub-circuit is connected to a data line; the driving sub-circuit outputs a driving current to the light emitting control sub-circuit via a second node under control of a first node; the light emitting control sub-circuit drives a light emitting element to emit light according to a received driving current under control of a light emitting control line; and the level maintaining sub-circuit is connected between the first node and a first voltage terminal to maintain a level at the first node.
    Type: Grant
    Filed: September 9, 2016
    Date of Patent: May 21, 2019
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Yuan Wu, Fucheng Yang, Bin Ji, Luxia Jiang, Zheng Wang
  • Patent number: 10297199
    Abstract: Disclosed are an AMOLED pixel driving circuit and a pixel driving method. The AMOLED pixel driving circuit utilizes the 4T2C structure, and comprises: a first thin film transistor (T1), a second thin film transistor (T2), a third thin film transistor (T3), a fourth thin film transistor (T4), a first capacitor (C1), a second capacitor (C2) and an organic light emitting diode (D1); the nth scan signal (SCAN(n)) and the n+1th scan signal (SCAN(n+1)) are combined with each other, and correspond to a threshold voltage sensing stage, a holding stage, a programming stage and a drive stage one after another. In comparison with the pixel driving circuit of the 5T2C structure, the corresponding thin film transistor is controlled merely with arranging the scan signal. There will be the compensation function, and the amount of the control signals can be decreased, and the circuit structure is simplified and the cost is decreased.
    Type: Grant
    Filed: May 13, 2016
    Date of Patent: May 21, 2019
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Yuying Cai
  • Patent number: 10297194
    Abstract: Disclosed is an organic light emitting diode (OLED) display device. The OLED display device includes a target current setting unit connected to a pixel via a data line, to set a target current meeting a data voltage during a sampling period before a holding period to a target current to drive an OLED element during the holding period. The pixel includes a drive thin film transistor (TFT) for driving the OLED element, a first switching TFT to connect the drive TFT to a first power line for the sampling period such that the drive TFT serves as a diode, a second switching TFT to connect a source electrode of the drive TFT to the data line for the sampling period, and a capacitor connected between gate and source electrodes of the drive TFT, to store a drive voltage for the drive TFT determined based on the target current.
    Type: Grant
    Filed: December 23, 2016
    Date of Patent: May 21, 2019
    Assignee: LG Display Co., Ltd.
    Inventor: Jung-Jae Kim
  • Patent number: 10297205
    Abstract: A pixel includes a first transistor connected between a data line and a first node, a second transistor including a second electrode connected to a second node, and a gate electrode connected to the first node, a third transistor connected between a reference power supply and the first node, a fourth transistor including a first electrode connected to a first power supply, and a second electrode connected to a first electrode of the second transistor, a capacitor including a first electrode connected to the first node, and a second electrode connected to the second node, an organic light emitting diode connected between the second node and a second power supply, a fifth transistor connected to an anode of the organic light emitting diode, and a sixth transistor including a first electrode connected to the fifth transistor, and a second electrode connected to an initialization power supply.
    Type: Grant
    Filed: December 13, 2016
    Date of Patent: May 21, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Young In Hwang, Ji Hye Kong, Yong Sung Park, Dong Bum Lee, In Ho Choi
  • Patent number: 10290259
    Abstract: An organic light emitting display is capable of reducing variation in power transmitted to pixels to reduce or prevent non-uniformity of brightness from being generated. The organic light emitting display includes a pixel including a red sub pixel, a green sub pixel, and a blue sub pixel and first pixel power source lines for supplying a first pixel power from a first pixel power source to the red sub pixel, the green sub pixel, and the blue sub pixel, wherein the first pixel power source lines coupled to at least two different color sub pixels of the red, green and blue sub pixels have different widths. The first pixel power source lines have widths that may correspond to a voltage drop of the first pixel power source or may correspond to deterioration of the respective sub pixels to which they are coupled.
    Type: Grant
    Filed: August 31, 2016
    Date of Patent: May 14, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventor: Young-In Hwang
  • Patent number: 10283054
    Abstract: A pixel includes first to fourth transistors and a driving transistor. The first transistor is connected between a data line and a first node and has a gate electrode to receive a scan signal. The driving transistor is connected between the first node and a second node and has a gate electrode connected to a third node. The second transistor is connected between the second and third nodes and has a gate electrode to receive the scan signal. The third transistor is connected between first power and the first node and has a gate electrode to receive an emission signal. The fourth transistor is connected between the first and second nodes and has a gate electrode to receive an initialization signal. An organic light emitting diode is connected between the second node and second power. A storage capacitor is connected between the first power and third node.
    Type: Grant
    Filed: September 6, 2017
    Date of Patent: May 7, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jun-Hyun Park, An-Su Lee, Ji-Hye Lee, Bo-Yong Chung, Kang-Moon Jo, Chong-Chul Chai
  • Patent number: 10283055
    Abstract: The present invention discloses an organic light-emitting diode display device and a driving method thereof. The device includes: a plurality of pixels, including a plurality of organic light-emitting diodes and a plurality of drive transistors for supplying drive currents to the organic light-emitting diodes; a data driver, configured to transmit corresponding data signals to the plurality of pixels via a plurality of data lines; and a pre-charge circuit, configured to pre-charge voltage signals reserved in a previous time sequence to an initial voltage, the initial voltage being less than or equal to a minimum voltage of the data signals, wherein before the data driver transmits the corresponding data signals to the plurality of pixels, the pre-charge circuit acts to pre-charge the voltage signals reserved in the previous time sequence by the plurality of pixels to be less than or equal to the minimum voltage of the data signals.
    Type: Grant
    Filed: June 28, 2016
    Date of Patent: May 7, 2019
    Assignee: EverDisplay Optronics (Shanghai) Limited
    Inventor: Xingyu Zhou