Electroluminescent Device Patents (Class 315/169.3)
  • Patent number: 10348193
    Abstract: One example includes a power supply system. The system includes a switch system comprising a switch that is configured to generate a switching voltage at a switching node in response to an input voltage. The system also includes a non-linear capacitance charge-pump coupled to the switching node and being configured to provide an output current in response to the switching voltage. The output current can have an amplitude that varies non-linearly with respect to an amplitude of the switching voltage. The switch system further includes an output stage configured to generate an output voltage on an output node in response to the output current.
    Type: Grant
    Filed: June 19, 2018
    Date of Patent: July 9, 2019
    Assignee: Texas Instruments Incorporated
    Inventor: Isaac Cohen
  • Patent number: 10325553
    Abstract: There are provided a pixel circuit, a method for driving the light emitting device (04) and an organic light emitting display panel. The initializing module (03) is added to the pixel circuit. In the initializing phase, the initializing module (03) initializes the driving module (02) and the light emitting device (04); in the writing phase, the charging module (01) writes the data signal inputted from the data signal terminal into the control terminal of the driving module (02); and in the light emitting phase, the charging module (01) loads the first reference signal inputted from the data signal terminal (Data) to the control terminal of the driving module (02), and the initializing module (03) connects the output terminal of the driving module (02) with the input terminal of the light emitting device (04) so that the driving module (02) drives the light emitting device (04) to emit light.
    Type: Grant
    Filed: January 12, 2015
    Date of Patent: June 18, 2019
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Zuquan Hu
  • Patent number: 10311767
    Abstract: A display device is disclosed. The display device includes subpixels including data lines, scan lines, and one or more thin film transistors (TFTs). The display device includes a second switching TFT configured to output a reference signal input through a drain node to a source node according to a second scan signal input through a gate node, a first switching TFT configured to have a drain node connected to the source node of the second switching TFT, and form a current path such that the reference signal input through the drain node is transmitted to the data line according to a first scan signal input to a gate node, and an integrated circuit (IC) unit configured to sense a voltage of a current transmitted to the data line through the first switching TFT and sense a threshold voltage of the first switching TFT based on the sensed voltage.
    Type: Grant
    Filed: November 22, 2017
    Date of Patent: June 4, 2019
    Assignee: LG Display Co., Ltd.
    Inventors: Sohee Choi, Namyong Gong, Sungsoo Shin
  • Patent number: 10305065
    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: November 17, 2017
    Date of Patent: May 28, 2019
    Assignee: JOLED INC.
    Inventors: Takatoshi Saito, Kenichi Izumi, Shinichi Teraguchi, Tadakatsu Nakadaira, Mikihiro Yokozeki, Shota Nishi, Manabu Kodate
  • Patent number: 10297780
    Abstract: An organic light-emitting display and a method for fabricating the same, and an organic lighting display are provided. The organic light-emitting display includes a substrate and at least one lighting unit formed on the substrate, and the at least one lighting includes: an anode layer; an organic layer formed on the anode layer; and a pixel define layer formed at two sides of the anode layer and the organic layer and touching the two sides of the anode layer and the organic layer, and inner sides of the pixel define layer touching the anode layer and the organic layer have hydrophilic material; wherein at least one part of the anode layer is downward recessed to form a first arcuate recess, and the organic layer is downward recessed and formed in the first arcuate recess.
    Type: Grant
    Filed: November 23, 2017
    Date of Patent: May 21, 2019
    Assignee: WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTOR DISPLAY TECHNOLOGY CO., LTD.
    Inventor: Xin Zou
  • Patent number: 10297200
    Abstract: A display device is provided in which a control switching element arranged in a location to which a voltage used for driving a display panel is applied may identify whether an abnormal current has occurred in the display panel in an off-situation so as to easily and accurately detect whether or not a panel defect exists, in a panel defect detection interval wherein the panel defect detection interval is an interval having no abnormal current occurring therein when no panel defect exists. A panel defect detection system and a panel defect detection method are also provided.
    Type: Grant
    Filed: June 28, 2016
    Date of Patent: May 21, 2019
    Assignee: LG Display Co., Ltd.
    Inventors: EungKyu Kim, SinKyun Park
  • Patent number: 10297209
    Abstract: A display apparatus includes a light emitter including a plurality of LEDs connected in parallel, and a driving circuit configured to turn on the plurality of LEDs and then to adjust respective turn-off time periods of the plurality of LEDs to adjust brightness of the plurality of LEDs.
    Type: Grant
    Filed: July 20, 2016
    Date of Patent: May 21, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Shin-ho Kang
  • Patent number: 10288893
    Abstract: A device having a partially reflective cover, in particular for use as a decorative mirror element, is described. The device comprises a light source and a cover, which is arranged in front of the light source, the cover comprising a reflective polarizer and a circular polarizer, which is arranged behind the reflective polarizer.
    Type: Grant
    Filed: October 8, 2014
    Date of Patent: May 14, 2019
    Assignee: e.solutions GmbH
    Inventor: Jens Rasmussen
  • Patent number: 10288274
    Abstract: Disclosed is a LED lighting apparatus comprising: a LED module including a substrate 10 having a front surface 12 and a rear surface 13, and a plurality of LEDs 11 mounted on the front surface 12 of the substrate 10 and driven by direct input of AC voltage; a heat sink 50 for dissipating heat from the LEDs 11 on the substrate 10; a plurality of capacitors 20 to eliminate flickering of the LEDs 11; a flame barrier plate 30 being made of flame-retardant material and covering the front surface 12 of the substrate 10 so as to insulate the LED module from fire flame; and a plurality of capacitor housings 31 made of flame-retardant material, each of the capacitor housings 31 including an opening 32 formed at a front side and accommodating each capacitor 20 so as to insulate the capacitor 20 therein from fire flame; a flame barrier film 40 made of flame-retardant material and covering the opening 32 of the capacitor housing 31; and lens 60 detachably coupled to the rim of the heat sink by hook 62.
    Type: Grant
    Filed: May 5, 2017
    Date of Patent: May 14, 2019
    Assignees: ILSUNG CO., LTD.
    Inventor: Woo Hyun Cho
  • Patent number: 10283578
    Abstract: An organic light emitting diode display device includes a substrate, a plurality of organic light emitting diodes on the substrate, a thin film encapsulation layer on the organic light emitting diodes, and at least one sensor on the thin film encapsulation layer, the sensor including a sensing gate electrode, an oxide semiconductor layer overlapping the sensing gate electrode, a sensing source electrode connected to the oxide semiconductor layer, and a sensing drain electrode spaced apart from the sensing source electrode and connected to the oxide semiconductor layer.
    Type: Grant
    Filed: September 1, 2017
    Date of Patent: May 7, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jihyun Ka, Wonkyu Kwak, Hansung Bae
  • Patent number: 10276092
    Abstract: A display apparatus including a plurality of pixel electrodes, a plurality of circuit units in one-to-one correspondence with the plurality of pixel electrodes, respectively, each of the plurality of circuit units being electrically connected to a corresponding one of the plurality of pixel electrodes, a plurality of lower power supply lines extending in one direction so as to be electrically connected to some circuit units from among the plurality of circuit units, the some circuit units being along the one direction, and a plurality of upper power supply lines extending in the one direction, the upper power supply lines being over the plurality of lower power supply lines, and electrically connected to the plurality of lower power supply lines.
    Type: Grant
    Filed: October 25, 2016
    Date of Patent: April 30, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jinseok Oh, Deukjong Kim
  • Patent number: 10269779
    Abstract: A micro light emitting-diode display panel and a manufacturing method thereof are provided. The first electrode contact and the second electrode contact are alternatively disposed on the base substrate of the micro light-emitting-diode display panel, and the first electrode contact and the second electrode contact are respectively connected with the bottom electrode and the connection electrode of the micro light-emitting-diode. The connection electrode is also connected with the top electrode of the micro light-emitting-diode, and the micro light-emitting-diodes can be immediately inspected after the micro-light-emitting-diode is transferred, to reduce the difficulty of detection and product repair, and to improve the product yield.
    Type: Grant
    Filed: June 20, 2017
    Date of Patent: April 23, 2019
    Assignee: SHENZHEN CHINA STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventor: Macai Lu
  • Patent number: 10269294
    Abstract: Discussed is an OLED display device. The OLED display device includes a first transistor, a driving transistor, a first capacitor, a second transistor, an OLED, and a third transistor. The first transistor supplies a data voltage or a reference voltage to a first node according to a scan signal. A gate of the driving transistor is connected to the first node, a source of the driving transistor is connected to a second node, and a drain of the driving transistor is connected to a fourth node. The first capacitor is connected between the first and second nodes. The second transistor supplies a high-level source voltage to the second node. The OLED emits light with a difference voltage between voltages of the first and second nodes. The third transistor connects the fourth node to a fifth node according to a second emission control signal.
    Type: Grant
    Filed: August 5, 2013
    Date of Patent: April 23, 2019
    Assignee: LG DISPLAY CO., LTD.
    Inventor: Sanghyeon Kwak
  • Patent number: 10269881
    Abstract: A display device includes: a first substrate including: a display area including a plurality of pixels, and a peripheral area positioned around the display area; a thin film transistor positioned on the first substrate; a pixel electrode layer positioned on the thin film transistor and including more than one pixel electrodes positioned in the display area; and a pixel definition layer positioned on the pixel electrode layer and including a peripheral portion overlapping a voltage transmission electrode. The peripheral portion includes a spacer and an inclination portion connected to the spacer and positioned at a first side of the spacer, and the inclination portion has a concave inclination surface.
    Type: Grant
    Filed: September 22, 2015
    Date of Patent: April 23, 2019
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Jae Kyung Go, Eun Jae Na, Min Jun Jo, Hyun-Jun Choi
  • Patent number: 10237993
    Abstract: An information display system includes an information display base and an information display carrier. The information display base includes a mounting panel which includes a first electrical conductor, and a second electrical conductor spaced from the mounting panel. The information display carrier includes a mount, a first electrical terminal that, when mounted to the mounting panel, contacts the first electrical conductor of the mounting panel, and a second electrical terminal that extends through an opening in the mounting panel and contacts the second electrical conductor of the mounting panel.
    Type: Grant
    Filed: May 29, 2018
    Date of Patent: March 19, 2019
    Inventor: Jordan Michael Dwight Gaietto
  • Patent number: 10229962
    Abstract: An organic light emitting display (OLED) device includes an organic light emitting diode having an anode and a cathode. The organic light emitting diode is configured to receive a reference voltage. A control transistor includes a first control electrode and a first semiconductor active layer. The control transistor is configured to receive a control signal. A driving transistor includes a second control electrode that is electrically connected to the control transistor, an input electrode that is configured to receive a power voltage, an output electrode that is electrically connected to the anode of the organic light emitting diode, and a second semiconductor active layer that includes a different material from that of the first semiconductor active layer. A shielding electrode is disposed on the second semiconductor active layer, overlapping the driving transistor, and configured to receive the power voltage.
    Type: Grant
    Filed: March 30, 2018
    Date of Patent: March 12, 2019
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Dongsoo Kim, Ji-Hyun Ka
  • Patent number: 10223961
    Abstract: A method for displaying images on an active matrix screen, i representing a pointer of a current row and each pixel comprising a memory and a display component comprises controlling the brightness of the pixels by a binary word comprising a number of bits written successively into the memory and by controlling the display component as a function of a state of the bit written into the memory, the bits of each binary word being ranked by their weight from j=1 to j=P. The writes are sequenced: from a current row i, writing on the rows i+2j, from j=1 to j=P, the bit of weight j of each binary word associated with different pixels of rows i+2j; repeating, 2P?1 times, the writes mentioned above by shifting the pointer i of the current row by one unit on each repetition; i being determined modulo 2P?1 to lie between 1 and 2P?1.
    Type: Grant
    Filed: April 8, 2016
    Date of Patent: March 5, 2019
    Assignee: COMMISSARIAT A L'ENERGIE ATOMIQUE ET AUX ENERGIES ALTERNATIVES
    Inventor: Josep Segura Puchades
  • Patent number: 10223966
    Abstract: An organic EL display device includes a plurality of sub-pixels each including a first organic EL element and a second organic EL element, a temperature information detector configured to measure current-voltage characteristics of the second organic EL element included in each of the sub-pixels, and to detect, on the basis of a result of the measurement, temperature information of the second organic EL element included in each of the sub-pixels, and a correction unit configured to correct a driving signal of the first organic EL element included in each of the sub-pixels on the basis of the temperature information of the second organic EL element included in the same sub-pixel as the sub-pixel including the relevant first organic EL element.
    Type: Grant
    Filed: June 17, 2015
    Date of Patent: March 5, 2019
    Assignee: SHARP KABUSHIKI KAISHA
    Inventors: Satoshi Inoue, Katsuhiro Kikuchi, Hideki Uchida, Manabu Niboshi, Yoshiyuki Isomura, Yuto Tsukamoto
  • Patent number: 10217944
    Abstract: Provided are a compound of Formula 1 and an organic electric element including a first electrode, a second electrode, and an organic material layer between the first electrode and the second electrode and comprising the compound, the element showing improved luminous efficiency, stability, and life span.
    Type: Grant
    Filed: January 20, 2015
    Date of Patent: February 26, 2019
    Assignee: DUK SAN NEOLUX CO., LTD.
    Inventors: Bum Sung Lee, Soung Yun Mun, DaeSung Kim, Jung Cheol Park, Gyu Min Lee, Sun-Hee Lee
  • Patent number: 10217436
    Abstract: A display panel includes a plurality of pixels. Each pixel includes a plurality of different-color sub-pixels and a coupling sub-pixel that overlaps at least one color sub-pixel so as to be configured to be capacitively coupled to the at least one color sub-pixel to be thereby driven so as to display a color different from that of the different-color sub-pixels.
    Type: Grant
    Filed: August 5, 2015
    Date of Patent: February 26, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Junpyo Lee, ByungKil Jeon
  • Patent number: 10218351
    Abstract: A PCH driving section of a gate driving circuit applies a high level driving voltage that can be changed by a high side pre-driver to a gate of a P-channel MOSFET connected between a high potential side terminal and a high side driving terminal. An NCH driving section applies a low level driving voltage to a gate of an N-channel MOSFET connected between a low side driving terminal and a low potential side terminal using a low side pre-driver. The low potential side terminal is provided separately from a ground terminal.
    Type: Grant
    Filed: April 17, 2018
    Date of Patent: February 26, 2019
    Assignee: DENSO CORPORATION
    Inventor: Kouhei Shinomiya
  • Patent number: 10217422
    Abstract: An array substrate, a driving method thereof and an electronic paper. The array substrate includes a base substrate; a plurality of gate lines and a plurality of data lines disposed on the base substrate, the plurality of gate lines and the plurality of data lines being insulated from each other and extending across each other; a gate driving circuit disposed on the base substrate and electrically connected with the gate lines; and a data driving circuit disposed on the base substrate and electrically connected with the data lines. During a display period of a frame, the gate driving circuit is configured to load gate scanning signals to respective gate lines sequentially; and while each gate line is loaded with a respective gate scanning signal, the data driving circuit is configured to transmit data signals to the data lines.
    Type: Grant
    Filed: March 15, 2016
    Date of Patent: February 26, 2019
    Assignees: BOE TECHNOLOGY GROUP CO., LTD., BEIJING BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.
    Inventors: Yue Li, Xiaochuan Chen, Lei Wang, Wenjun Xiao
  • Patent number: 10217413
    Abstract: Disclosed are an organic light emitting display and a method of driving the same. A charging circuit supplies charging voltages to organic light emitting diodes included in the plurality of subpixels, wherein a different charging voltage is supplied to at least one of the organic light emitting diodes. The data driver supplies data signals to data lines of the plurality of subpixels.
    Type: Grant
    Filed: November 23, 2016
    Date of Patent: February 26, 2019
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Jeonga Lee, Suhyuk Jang, Jiwoong Park, Seokjun Kang, Jinwon Lee, Hyojin Kim, Junhwan Park
  • Patent number: 10210790
    Abstract: An electroluminescent display includes an array of pixels, each including a capacitor, an electroluminescent (EL) device, a first group of transistors and a second group of transistors. The first group of transistors, coupled between a first terminal of the capacitor and a data input, provides a compensation voltage according to data received at the data input. The compensation voltage is composed of a threshold voltage of each of the first group of transistors. The second group of transistors passes a current through the EL device that has a magnitude independent of a threshold voltage of the second group of transistors. In a first phase, a voltage level at the first terminal of the capacitor is reset. In a second phase, data is stored in the capacitor and received via the first group of transistors, and the compensation voltage is generated. In a third phase, the current is passed.
    Type: Grant
    Filed: February 23, 2017
    Date of Patent: February 19, 2019
    Assignee: INT TECH CO., LTD.
    Inventor: Shih-Song Cheng
  • Patent number: 10211268
    Abstract: An active matrix organic LED display having a matrix of multiple light emitting pixels and electronic drive circuitry for selectively addressing the pixels, each pixel containing an organic LED. The electronic drive circuitry includes row scan electrodes and column data electrodes that interconnect the matrix of pixels. The circuitry also includes a MEMS switching device and a memory capacitor for each pixel, the MEMS switching device connecting the memory capacitor to a column data electrode during addressing of a pixel and connecting the memory capacitor to the organic LED of each pixel during light emission.
    Type: Grant
    Filed: September 28, 2012
    Date of Patent: February 19, 2019
    Assignee: Imaging Systems Technology, Inc.
    Inventor: James C. Rutherford
  • Patent number: 10187941
    Abstract: A light emitting device current regulator circuit is disclosed. A light emitting device circuit has a first end for receiving light emitting device operation power, and a second end. The light emitting device current regulator circuit includes: an internal voltage generation circuit coupled to the second end, for generating an internal voltage according to a second end voltage to supply electrical power to the light emitting device current regulator circuit, wherein the supply voltage generation circuit includes a charge storage device for storing charges from the second end voltage to generate the supply voltage; and a current control circuit coupled to the second end, the current control circuit regulating the light emitting device current according to a control signal, wherein the control signal at least intermittently reduces the light emitting device current to zero or low current in order to raise the second end voltage.
    Type: Grant
    Filed: May 21, 2017
    Date of Patent: January 22, 2019
    Assignee: RICHTEK TECHNOLOGY CORPORATION
    Inventor: Jing-Meng Liu
  • Patent number: 10181573
    Abstract: An organic light-emitting diode (OLED) display device and a method of fabricating the same can reduce resistance of a cathode by forming an auxiliary electrode. Also, such OLED display device and method can prevent damage on a pad electrode due to an etchant during patterning of an anode by applying a protective structure to the pad electrode of a pad area and by including the pad electrode exposed from a plurality of pad electrode layers.
    Type: Grant
    Filed: July 10, 2015
    Date of Patent: January 15, 2019
    Assignee: LG Display Co., Ltd.
    Inventors: JongHyeok Im, SeJune Kim, JoonSuk Lee, SoJung Lee, JaeSung Lee
  • Patent number: 10176756
    Abstract: An organic light emitting display device includes a display panel including pixels that includes an organic light emitting diode that emits light based on a driving current, a data driver providing a data signal to the pixels through a data line, a scan driver providing a scan signal to the pixels through a scan line, an emission control driver providing an emission control signal to the pixels through an emission control line, a first power provider providing a first high power voltage to the pixels through a first power providing line and a second power provider providing a second high power voltage to the pixels through a second power providing line and coupled to the first power provider. The second power provider includes a static current circuit that maintains the driving current having uniform value when the display panel is operated in a low frequency driving mode.
    Type: Grant
    Filed: June 15, 2017
    Date of Patent: January 8, 2019
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Kyung-Ho Hwang, Won-Ju Shin, Dong-Hwan Lee, Jin-Young Jeon
  • Patent number: 10170727
    Abstract: An organic electroluminescent device with a touch sensor including: a first substrate; a second substrate arranged opposite to the first substrate; an organic EL element layer arranged above the first substrate; a first sealing film arranged toward the second substrate of the organic EL element layer, covering the organic EL element layer, and including a first inorganic layer; plural first detection electrodes extending in one direction, and arranged in parallel toward the second substrate of the first sealing film; a second sealing film arranged toward the second substrate of the first detection electrodes, and including a second inorganic layer; plural second detection electrodes extending in another direction different from the one direction, and arranged in parallel toward the second substrate of the second sealing film; and a touch sensor control unit controlling a potential to detect a touch with a display surface.
    Type: Grant
    Filed: April 11, 2017
    Date of Patent: January 1, 2019
    Assignee: Japan Display Inc.
    Inventors: Toshihiro Sato, Ryoichi Ito
  • Patent number: 10170728
    Abstract: A display device includes a substrate, an encapsulation portion on the substrate, a seal portion between the substrate and the encapsulation portion, and at least one dummy seal portion around the seal portion. The substrate and the encapsulation portion at least partially overlap each other in a first direction perpendicular to a surface of the substrate. The dummy seal portion is, when viewed in the first direction, arranged in an area between an edge of the seal portion and a boundary line of an overlapping area of the substrate and the encapsulation portion.
    Type: Grant
    Filed: February 21, 2017
    Date of Patent: January 1, 2019
    Assignee: Samsung Display Co., Ltd.
    Inventors: Taekon Kim, Jungtae Kim
  • Patent number: 10163995
    Abstract: The purpose of the present invention is to precisely determine an area of the evaporated organic EL material in an organic EL display device, where organic EL layers in individual pixels emit light of different wave lengths. The purpose is realized by a structure that: A display device comprising: pixel electrodes are formed in a matrix arrangement on a substrate and a space exists between the pixel electrodes, a bank, which covers an edge of the pixel electrode, having an opening that exposes a part of one of the pixel electrodes, a first projection formed on a top of the bank and along a side of the opening, a second projection formed in an area that is near to the center of the top of the bank than the first projection is, in a plan view.
    Type: Grant
    Filed: August 15, 2017
    Date of Patent: December 25, 2018
    Assignee: Japan Display Inc.
    Inventors: Yuki Hamada, Hajime Akimoto
  • Patent number: 10157567
    Abstract: A display apparatus includes a display panel, a gate driver, and a gate driving control circuit. The gate driver is connected to the display panel, and generates gate signals for driving the display panel using a gate clock signal. The gate driving control circuit generates the gate clock signal using a gate on voltage and a gate off voltage, determines whether an operation environment is an abnormal temperature environment by comparing a first feedback gate signal with a second feedback gate signal, and adjusts a voltage level of the gate clock signal in the abnormal temperature environment. The first feedback gate signal is retrieved from the display panel while a first frame image is displayed on the display panel. The second feedback gate signal is retrieved from the display panel while a second frame image subsequent to the first frame image is displayed on the display panel.
    Type: Grant
    Filed: March 31, 2017
    Date of Patent: December 18, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Chang-Soo Lee, Kookhyun Choi
  • Patent number: 10157970
    Abstract: A thin-film transistor array substrate for AMOLED and a manufacturing method thereof are disclosed. The thin-film transistor array substrate includes: a substrate; a plurality of thin-film transistor pixel units mounted on the substrate, each of which includes at least one driving thin-film transistor and at least one switching thin-film transistor; a first electrode pattern layer mounted on the substrate; an insulating layer mounted on the substrate and covering gates of the driving thin-film transistor and the switching thin-film transistor and the first electrode pattern layer; and a second electrode pattern layer mounted on the insulating layer and partially overlapped with the first electrode pattern layer to have an overlapping area and a non-overlapping area; the insulating layer has a larger thickness in the overlapping area and has a smaller thickness in the non-overlapping area.
    Type: Grant
    Filed: February 25, 2016
    Date of Patent: December 18, 2018
    Assignee: Shenzhen China Star Optoelectronis Technology Co., Ltd.
    Inventor: Hejing Zhang
  • Patent number: 10152916
    Abstract: The present disclosure provides an AMOLED pixel driving circuit, method and a display device. The AMOLED pixel driving circuit is for driving an organic light-emitting diode (OLED) and includes: a charge storage unit configured to be charged in a data writing stage and be discharged in a pixel lighting stage to light up the OLED; a data writing unit configured to write a data current in the data writing stage; a light-emitting control unit configured to control to enable a connection between the charge storage unit and the OLED in the pixel lighting stage. The AMOLED pixel driving circuit further includes a current amplification unit configured to, in the data writing stage, amplify the data current and charge the charge storage unit with the amplified data current.
    Type: Grant
    Filed: August 27, 2014
    Date of Patent: December 11, 2018
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Ying Wang, Ying Liu
  • Patent number: 10152915
    Abstract: Systems and methods for adjusting a brightness of a display panel by periodically measuring at least one physical property in at least one area of a display panel, generating measurement data, and adjusting the brightness of the display panel with use of the measurement data. The brightness can be adjusted to control temperature and aging, in response to measurements of physical properties measured in at least one area of the display panel.
    Type: Grant
    Filed: March 31, 2016
    Date of Patent: December 11, 2018
    Assignee: Ignis Innovation Inc.
    Inventor: Gholamreza Chaji
  • Patent number: 10147488
    Abstract: Provided is a semiconductor device including nonvolatile memory cells each including a FinFET having excellent memory characteristics. The semiconductor device includes a semiconductor substrate, memory cells each formed in the semiconductor substrate and having a split-gate structure including an opposed-gate selection gate electrode, a memory gate electrode, and a pair of terminals, and a word line driver circuit which supplies a selection voltage to a selection gate electrode of the selected one of the memory cells and supplies a non-selection voltage to the selection gate electrode of the non-selected one of the memory cells. The word line driver circuit supplies, as the non-selection voltage, a voltage which is negative or positive relative to a potential in the semiconductor substrate so as to bring a selection transistor corresponding to the selection gate electrode of the non-selected memory cell into an OFF state.
    Type: Grant
    Filed: July 2, 2017
    Date of Patent: December 4, 2018
    Assignee: RENESAS ELECTRONICS CORPORATION
    Inventor: Digh Hisamoto
  • Patent number: 10147348
    Abstract: A voltage conversion circuit includes a reference voltage setting unit configured to generate a positive voltage and a negative voltage to be supplied to a display panel, an amplifier, and first and second switching units disposed between the output terminal of the amplifier and the ground. Accordingly, it is possible to selectively output different base voltages. An organic light-emitting display device includes a display panel, a data driver, a gate driver, a voltage supply unit, and a voltage conversion unit configured to selectively supply different base voltages. Accordingly, it is possible to selectively output a base voltage to be supplied to a cathode of an organic light-emitting diode of each sub pixel.
    Type: Grant
    Filed: December 27, 2016
    Date of Patent: December 4, 2018
    Assignee: LG Display Co., Ltd.
    Inventors: Tae Woo Kim, Sangyong Kim
  • Patent number: 10140928
    Abstract: Provided are a pixel driving circuit, a driving method, an array substrate and a display apparatus. The pixel circuit comprises: a data line, a gate line, a first power line, a second power line, a reference signal line, a light emitting device, a driving transistor, a storage capacitor, a reset unit, a data writing unit, a compensation unit and a light emitting control unit. The pixel driving circuit can compensate and eliminate the display nonuniformity caused by the threshold voltage difference of the driving transistors.
    Type: Grant
    Filed: October 24, 2014
    Date of Patent: November 27, 2018
    Assignee: BOE Technology Group Co., Ltd.
    Inventors: Ying Wang, Xinshe Yin, Liang Sun
  • Patent number: 10140926
    Abstract: A display device includes a pixels unit and a driving unit. The driving unit includes an emission driver coupled to a first clock line and a second clock line and configured to receive therefrom a first clock signal and a second clock signal, respectively, and to generate an emission control signal provided to the pixels based on the first clock signal and the second clock signal and a scan driver coupled to the emission driver through a first coupling line and a second coupling line, the scan driver configured to receive the first clock signal and the second clock signal from the emission driver and to generate a scan signal provided to the pixels based on the first clock signal and the second clock signal.
    Type: Grant
    Filed: December 16, 2016
    Date of Patent: November 27, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jung-Hoon Shim, Chae-Han Hyun
  • Patent number: 10140918
    Abstract: An embodiment of the present disclosure provides an actively driven organic light-emitting display apparatus to eliminate a defect in which the current flowing through the lighting device in the actively driven organic light-emitting display apparatus is affected by the instable current caused by the instable threshold voltage of the drive transistor, so that the current flowing through the lighting device is accurate and make the brightness of the whole actively driven organic light-emitting display apparatus be even. The display apparatus comprises a light emitting device, a light emitting device drive unit, a first switch unit, a second switch unit, a current control unit and a resistor which constitute a feedback loop. An input terminal of the current control unit is input a data signal to control that the current of the light emitting device is only associated with the resistor, voltage of the input data signal and the supply voltage.
    Type: Grant
    Filed: February 27, 2015
    Date of Patent: November 27, 2018
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Chen Song, Liye Duan
  • Patent number: 10135437
    Abstract: Parallely connected first and second switches respectively have first and second on resistances. The second on resistance is higher than the first on resistance in a lower range of current, and lower than the first on resistance in a higher range of current. A current obtaining unit obtains a current parameter indicative of an input current flowing through both the first and second switches. A low-current control unit controls, based on the obtained current parameter, switching operations of the first and second switches to correspondingly increase the number of times of turn-on of the first switch relative to the number of times of turn-on of the second switch, and prevent simultaneous turn-on of the first and second switches while a value of the input current is located within a predetermined low-level current region, the low-level current region being lower than the threshold current.
    Type: Grant
    Filed: November 21, 2017
    Date of Patent: November 20, 2018
    Assignee: DENSO CORPORATION
    Inventors: Hiroshi Shimizu, Kazuma Fukushima
  • Patent number: 10133398
    Abstract: An array substrate, a touch display device and a driving method thereof are provided by the present disclosure. The array substrate includes a gate driving circuit and a touch driving circuit provided in a non-display area. The touch driving circuit includes multiple groups of touch selective output modules. Every group of touch selective output module includes two strobe signal input terminals for which the strobe signals are provided by secondary trigger signal output terminals of two adjacent shift registers in the gate driving circuit.
    Type: Grant
    Filed: May 19, 2016
    Date of Patent: November 20, 2018
    Assignees: Xiamen Tianma Micro-Electronics Co., Ltd., Tianma Micro-Electronics Co., Ltd.
    Inventors: Ying Sun, Yumin Xu
  • Patent number: 10121905
    Abstract: Provided is a semiconductor device including a transistor in which a first gate and a second gate are provided with a channel formation region provided therebetween and which achieves both control of the threshold voltage and an increase in the on-state current. In a period during which first voltage with which the transistor is turned off is supplied to the first gate, control voltage for controlling the threshold voltage is supplied to the second gate. In a period during which second voltage with which the transistor is turned on is supplied to the first gate, the second voltage is supplied to the first gate and voltage in which voltage based on change in the voltage of a signal supplied to the first gate is added to the control voltage is supplied to the second gate.
    Type: Grant
    Filed: September 2, 2014
    Date of Patent: November 6, 2018
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Hiroyuki Miyake
  • Patent number: 10115739
    Abstract: A display unit of the present disclosure includes a plurality of pixel circuits each including a light-emitting element, a drive transistor that has a drain and a source and supplies a current to the light-emitting element, and a control transistor connected to the drain or the source of the drive transistor. One channel portion is formed for two control transistors in respective adjacent two of the pixel circuits.
    Type: Grant
    Filed: April 24, 2015
    Date of Patent: October 30, 2018
    Assignee: Sony Corporation
    Inventors: Naoya Kasahara, Michihiro Kanno
  • Patent number: 10115346
    Abstract: A display device according to the disclosure includes: a display section having a plurality of unit pixels; and a driving section that, in a first drive mode, performs write driving and thereafter performs light emission driving in a plurality of light-emitting periods on each of the unit pixels. One of predetermined number of light-emitting periods out of the plurality of light-emitting periods other than a first light-emitting period is longer than the first light-emitting period, and another one of the predetermined number of light-emitting periods is shorter than the first light-emitting period.
    Type: Grant
    Filed: February 10, 2015
    Date of Patent: October 30, 2018
    Assignee: JOLED INC.
    Inventors: Koichi Maeyama, Teppei Isobe
  • Patent number: 10102794
    Abstract: A distributed charge-pump power-supply system includes a system substrate with a plurality of separate electronic elements spatially distributed over the system substrate. Each electronic element includes first and second sub-elements requiring first and second different operating voltage connections. A plurality of separate charge-pump circuits are also spatially distributed over the system substrate. Each charge-pump circuit has a common charge-pump power supply connection and provides the first and second voltage connection supplying operating electrical power to the first and second sub-elements. The electronic elements are arranged in groups of one or more electronic elements and the first and second voltage connections for each group are provided by a charge-pump circuit.
    Type: Grant
    Filed: August 24, 2015
    Date of Patent: October 16, 2018
    Assignee: X-Celeprint Limited
    Inventors: Christopher Bower, Matthew Meitl, Robert R. Rotzoll
  • Patent number: 10103212
    Abstract: There is provided a display device including: a light emitting element; and a drive transistor (DRTr) that includes a coupling section (W1) and a plurality of channel sections (CH) coupled in series through the coupling section (W1), wherein the drive transistor (DRTr) is configured to supply a drive current to the light emitting element.
    Type: Grant
    Filed: July 16, 2014
    Date of Patent: October 16, 2018
    Assignee: Sony Corporation
    Inventor: Seiichiro Jinta
  • Patent number: 10098202
    Abstract: A driver circuit of a light fixture includes a half-bridge inverter, a resonant tank circuit, an isolating transformer, an output rectifier, and a controller. The half-bridge inverter provides an alternating current signal to the resonant tank circuit. The resonant tank circuit includes a resonant inductor, a resonant capacitor, a first clamping diode, and a second clamping diode. The clamping diodes limit the voltage of the resonant capacitor to a power rail voltage and a ground voltage. The isolating transformer is connected to the resonant tank circuit. The controller senses current provided to the light source and adjusts a switching frequency of the half-bridge inverter to maintain the sensed current at a target current. The driver circuit operates as a constant current source with a self-limited output voltage determined as a function of the voltage of the power rail and the turns ration of the isolating transformer.
    Type: Grant
    Filed: March 19, 2013
    Date of Patent: October 9, 2018
    Assignee: Universal Lighting Technologies
    Inventor: Wei Xiong
  • Patent number: 10096667
    Abstract: A display device includes a substrate including a display area and a non-display area disposed at a peripheral area of the display area. A plurality of pixels is disposed in the display area of the substrate. A plurality of signal lines is disposed on the substrate and is connected to the plurality of pixels. The plurality of signal lines include a plurality of gate lines and a plurality of data lines disposed on the substrate. A crack detecting line is disposed in the non-display area and is connected to a first data line of the plurality of data lines. The crack detecting line includes a first portion disposed below an insulating layer and a second portion disposed above the insulating layer. The first portion and the second portion are connected with each other through a contact hole formed in the insulating layer.
    Type: Grant
    Filed: April 29, 2016
    Date of Patent: October 9, 2018
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventor: Sung Hyun Park
  • Patent number: 10095272
    Abstract: A flexible display device includes a display panel including a main display area including a plurality of main pixel rows, and a sub display area at a side of the main display area and including a plurality of sub pixel rows, a scan driving circuit configured to provide scan signals to the main pixel rows via a plurality of main scan lines, and provide the scan signals to the sub pixel rows via a plurality of sub scan lines, a data driving circuit configured to provide data signals to a plurality of pixels respectively located in the main pixel rows and the sub pixel rows, and a timing controller configured to control the scan driving circuit and the data driving circuit, wherein a number of the sub pixel rows is less than a number of the main pixel rows.
    Type: Grant
    Filed: April 8, 2016
    Date of Patent: October 9, 2018
    Assignee: Samsung Display Co., Ltd.
    Inventors: Ju-Chan Park, Jin-Taek Kim, Tae-An Seo, Sun-Hee Lee, Pil-Suk Lee