Solid Body Light Emitter (e.g., Led) Patents (Class 345/82)
  • Patent number: 10706777
    Abstract: An image display device includes: a pixel array part formed of first to fourth scanning lines arranged in rows, signal lines arranged in columns, pixel circuits in a matrix connected to the scanning lines and signal lines, and a plurality of power source lines which supplies first to third potentials necessary for the operations of pixel circuit; a signal part which supplies a video signal to the signal lines; and a scanner part which supplies a control signal to the first to fourth scanning lines, and in turn scans the pixel circuit for every row, wherein the pixel circuits include a sampling transistor, a drive transistor, first to third switching transistors, a pixel capacitance, and a light emitting device, and a channel length of the drive transistor is made longer than a channel length of the switching transistors to suppress fluctuations in threshold voltage.
    Type: Grant
    Filed: February 6, 2019
    Date of Patent: July 7, 2020
    Assignee: Sony Corporation
    Inventors: Junichi Yamashita, Yutaka Mitomi, Tetsuo Minami, Takao Tanikame
  • Patent number: 10704760
    Abstract: A vehicle lamp includes a long lamp component, and the lamp component includes a plurality of divided parts arranged in a longitudinal direction thereof and interconnected by a joint structure. The joint structure includes a first claw configured to connect upper surfaces of two adjacent divided parts of the plurality of divided parts and a first claw receiving hole fitted into the first claw, and a second claw configured to connect lower surfaces of the two divided parts and a second claw receiving hole fitted into the second claw.
    Type: Grant
    Filed: September 13, 2019
    Date of Patent: July 7, 2020
    Assignee: KOITO MANUFACTURING CO., LTD.
    Inventor: Masahiro Takahashi
  • Patent number: 10699636
    Abstract: A display device includes: a display panel including a plurality of pixels; a circuit board including: a power supply configured to output a reference voltage; and a signal controller; a connecting member electrically connecting the display panel and the circuit board; and a voltage modulator configured to generate a second power supply voltage of a low level with a division voltage using the reference voltage according to a switch control signal from the signal controller and to supply the second power supply voltage to the plurality of pixels.
    Type: Grant
    Filed: October 24, 2018
    Date of Patent: June 30, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Jin Young You, Tae Wook Kim
  • Patent number: 10692463
    Abstract: A light emitting diode (LED) driving circuit that sequentially drive a plurality of series-coupled LED groups comprising at least one LED is provided. The LED driving circuit includes a plurality of mid nodes coupled to terminals of the plurality of the LED groups, a common node with a reference voltage, a switch unit configured to form a plurality of current movement paths between the common node and the plurality of the mid nodes and configured to select a current movement path based on a control signal, a current measuring unit configured to detect a current flow through the common node, and a current control unit configured to generate the control signal based on the detected current flow.
    Type: Grant
    Filed: April 24, 2019
    Date of Patent: June 23, 2020
    Assignee: MagnaChip Semiconductor, Ltd.
    Inventors: Hyun-jung Kim, Seung-hwan Lee
  • Patent number: 10692955
    Abstract: An AMOLED display panel is provided. The AMOLED display panel includes a plurality of pixel structures arranged in a matrix and a plurality of power lines, configured to provide a driving power to the pixel structures, wherein two adjacent rows or two adjacent columns of the pixel structures is a period unit, each period unit is disposed corresponding to one of the power lines, the one of the power lines is disposed between the two adjacent rows or the two adjacent columns of the pixel structures, and the one of the power lines provides the driving power to the two adjacent rows or the two adjacent columns of the pixel structures disposed at two side of the one of the power lines. By practice of the disclosure, the amount of the power lines could be decreased, so high PPI (Pixels Per Inch) of the display panel could be achieved.
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: June 23, 2020
    Assignee: WUHAN CHINA STAR OPTOELECTRONICS SEMICONDUCTORS DISPLAY TECHNOLOGY CO., LTD.
    Inventors: Caiqin Chen, Dan Liu
  • Patent number: 10694601
    Abstract: A modular system includes an LED driver, including a switched mode power converter configured to output a supply current and a first control unit configured to control a switch of the switched mode power converter, and a light engine, including an LED assembly configured to receive the supply current, the LED assembly including a plurality of LEDs and one or more switches arranged in series or in parallel with one or more LEDs of the plurality of LEDs, and a second control unit configured to control the one or more switches of the LED assembly. The first control unit is configured to control an amplitude of the supply current. The second control unit is configured to control a duty cycle of the LED current through the plurality of LEDs.
    Type: Grant
    Filed: March 13, 2017
    Date of Patent: June 23, 2020
    Assignee: EldoLAB Holding B.V.
    Inventors: Marc Saes, Tijs Versteegde, Stephen Haight Lydecker
  • Patent number: 10679550
    Abstract: A voltage equal to the threshold value of a TFT (106) is held in capacitor unit (109). When a video signal is inputted from a source signal line, the voltage held in the capacitor unit is added thereto and a resultant signal is applied to a gate electrode of the TFT (106). Even when a threshold value is varied for each pixel, each threshold value is held in the capacitor unit (109) for each pixel. Thus, the influence of a variation in threshold value can be eliminated. Further, holding of the threshold value is conducted by only the capacitor unit (109) and a charge does not move at writing of a video signal so that a voltage between both electrodes is not changed. Thus, it is not influenced by a variation in capacitance value.
    Type: Grant
    Filed: February 1, 2018
    Date of Patent: June 9, 2020
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventor: Hajime Kimura
  • Patent number: 10679567
    Abstract: Provided is a display device including: a substrate including an active area, a non-active area, a bending area and a pad area; the active area including pixels to display images, each pixel including an organic light emitting layer and a thin-film transistor (TFT); the non-active area located between the active area and the bending area; and the bending area configured to be bent and located between the non-active area and the pad area, the bending area including a signal line and a power line that are made of a same material as a source electrode or a drain electrode of the TFT in the active area.
    Type: Grant
    Filed: November 9, 2017
    Date of Patent: June 9, 2020
    Assignee: LG Display Co., Ltd.
    Inventors: HoYoung Lee, ChangHeon Kang
  • Patent number: 10671200
    Abstract: A display device includes an insulating substrate, an encapsulation structural unit opposed to the insulating substrate, lower electrodes and one upper electrode disposed between the insulating substrate and the encapsulation structural unit, and organic light-emitting layers each disposed between the one upper electrode and one of the lower electrodes, perforating walls standing toward the encapsulation structural unit, circuits formed between the insulating substrate and the lower electrodes to control supply of electric current to the lower electrodes, and touch panel electrodes formed between the insulating substrate and the lower electrodes. The upper electrode is an electrode configured to transmit light from the organic light-emitting layers toward the encapsulation structural unit and has holes each formed in such a manner that one of the perforating walls stands through the hole. Electric fields generated by the touch panel electrodes pass through the holes in the upper electrodes.
    Type: Grant
    Filed: September 13, 2019
    Date of Patent: June 2, 2020
    Assignee: TIANMA MICROELECTRONICS CO., LTD.
    Inventors: Yojiro Matsueda, Kenichi Takatori
  • Patent number: 10665157
    Abstract: Systems and methods reduce likelihood of hysteresis that reduces perceived image quality of a subsequent image frame by toggling the display pixels to relax the display pixels by overwriting previous image frame data. During non-emission periods of the pixels, the pixels may be pre-toggled or exercised to improve response time and accuracy of the pixel. Data for pixels being programmed may also be used to pre-toggle other pixels reducing overhead but increasing cross-talk. Since the amount of cross-talk is related to content of the pixels being pre-toggled, a line buffer may be used to store image data for the pixels being pre-toggled. This stored image data may be used to determine how much pre-compensation is to be applied to data for the pixels being programmed. In other words, an amount of compensation applied is based at least in part on the content (e.g., greyscale levels) of the image data.
    Type: Grant
    Filed: April 3, 2019
    Date of Patent: May 26, 2020
    Assignee: Apple Inc.
    Inventors: Hung Sheng Lin, Shengkui Gao, Yingying Tang, Sean C. Chang, Mohammad B. Vahid Far, Kasra M. Omid-Zohoor, Chumin Zhao, Jingyu Huang, Mohammad Ali Jangda, Hyunwoo Nho, Chaohao Wang, Marc J. DeVincentis, Marc Albrecht, Warren S. Rieutort-Louis
  • Patent number: 10665578
    Abstract: Embodiments describe a display integration scheme in which an array of pixel driver chips embedded front side up in an insulator layer. A front side redistribution layer (RDL) spans across and is in electrical connection with the front sides of the array of pixel driver chips, and an array of light emitting diodes (LEDs) is bonded to the front side RDL. The pixel driver chips may be located directly beneath the display area of the display panel.
    Type: Grant
    Filed: February 28, 2018
    Date of Patent: May 26, 2020
    Inventors: Edzer Huitema, Vaibhav Patel, Tore Nauta, Xia Li, Hsin-Hua Hu
  • Patent number: 10665811
    Abstract: An electroluminescent display device which may improve display quality is discussed. The electroluminescent display device includes a substrate in which a plurality of pixel areas are defined, a first electrode arranged in each pixel area, a light emitting layer on the first electrode within the pixel area, and a second electrode on the light emitting layer. Particularly, a step difference portion is arranged at an edge of the pixel area, and is partially or fully be filled with the light emitting layer. Film uniformity of the light emitting layer within the pixel area may be improved by arrangement of the step difference portion.
    Type: Grant
    Filed: December 14, 2017
    Date of Patent: May 26, 2020
    Assignee: LG DISPLAY CO., LTD.
    Inventors: KyoungJin Park, Hanhee Kim, KiSoub Yang, HongMyeong Jeon, SungGoo Jung
  • Patent number: 10665152
    Abstract: A method of operating a light emitting diode (LED) display device is provided. The method includes determining idle time periods respectively corresponding to LED driving clock signals, based on a number of LED driving clock signals corresponding to one frame, controlling generation of the LED driving clock signals, based on the determined idle time periods, and driving an LED module in a unit of an LED line, based on the generated LED driving clock signals. As the LED display device automatically adjusts idle time periods of the LED driving clock signals, the occurrence of flicker in the LED display device may be reduced.
    Type: Grant
    Filed: September 6, 2017
    Date of Patent: May 26, 2020
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Young-hoon Cho, Ji-yong Park, Sang-kyun Im
  • Patent number: 10657884
    Abstract: An electronic device having a display and a sensor and methods for operating the same are provided. The electronic device includes a housing, a display disposed on a surface of the housing, a sensor mounted under the display inside the housing to detect light received through the display, and a processor electrically connected with the display and the sensor, wherein the processor is configured to determine an illuminance of an outside of the housing using detection data obtained by the sensor while the display displays an image and relevant information between the display and the sensor.
    Type: Grant
    Filed: August 29, 2017
    Date of Patent: May 19, 2020
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Eun-Taek Jang, Eun-Sook Seo, Dong-Kyoon Han, Tae-Woong Lee, Dong-Hui Kim, Hong-Kook Lee, Kwang-Tai Kim, Dong-Hyun Yeom
  • Patent number: 10657902
    Abstract: Disclosed is a sensing circuit of a display device for external compensation of an OLED. The sensing circuit includes a current receiving unit configured to receive a pixel current containing a leakage current, convert the pixel current at a preset current ratio, and output the converted pixel current; a current source unit; a current sinking unit; a current detection unit; and a detection signal output unit configured to sample an offset voltage corresponding to the leakage current using the detected current.
    Type: Grant
    Filed: August 11, 2017
    Date of Patent: May 19, 2020
    Assignee: Silicon Works Co., Ltd.
    Inventors: Jae Kwan Lee, Dong Hyun Hwang, Hyun Ho Kim
  • Patent number: 10658605
    Abstract: A quantum-nano light emitting diode (Q-NED) pixel includes a switching transistor configured to transfer a data voltage in response to a scan signal, a storage capacitor configured to store the data voltage transferred by the switching transistor, a driving transistor coupled to a first power supply voltage line, and configured to generate a driving current based on the data voltage stored in the storage capacitor, a plurality of Q-NEDs configured to emit light based on the driving current, the Q-NEDs having an ohmic contact resistance at anodes and cathodes of the Q-NEDs, a first sensing transistor configured to couple the Q-NEDs to a sensing line in response to a sensing signal when a sensing operation for sensing the ohmic contact resistance of the Q-NEDs is performed, and a second sensing transistor configured to decouple the Q-NEDs from a second power supply line in response to an inverted sensing signal.
    Type: Grant
    Filed: February 13, 2018
    Date of Patent: May 19, 2020
    Assignee: Samsung Display Co., Ltd.
    Inventors: Seung-Jun Lee, Geunjeong Park, Hui Nam, Myungho Lee
  • Patent number: 10636784
    Abstract: A display device includes a substrate; a plurality of pixels on the substrate; a drive circuit on the substrate; a first terminal and a second terminal connected to the pixels or the drive circuit and arranged on the substrate; a first wiring having a first end part connected with the first terminal, and a second end part located on an end part of the substrate; a second wiring having a third end part connected with the second terminal, and a fourth end part located on an end part of the substrate; a first current blocking unit blocking a current flowing in a direction from the second end part to the first end part of the first wiring; and a second current blocking unit blocking a current flowing in a direction from the fourth end part to the third end part of the second wiring.
    Type: Grant
    Filed: November 27, 2018
    Date of Patent: April 28, 2020
    Assignee: Japan Display Inc.
    Inventor: Naohisa Andou
  • Patent number: 10615186
    Abstract: A display device includes a pixel including a thin film transistor (TFT) on a substrate, a planarization layer on the thin film transistor (TFT), a light emitting device including a first electrode and a second electrode, the light emitting device embedded in the planarization layer, a pixel electrode electrically connected to the TFT and the first electrode of the light emitting device; and a common electrode electrically connected to the second electrode of the light emitting device.
    Type: Grant
    Filed: September 6, 2018
    Date of Patent: April 7, 2020
    Assignee: LG DISPLAY CO., LTD.
    Inventors: HanSaem Kang, HyeonHo Son
  • Patent number: 10614762
    Abstract: Disclosed is a display apparatus having a simplified configuration. The display apparatus includes a substrate including a display area including a plurality of pixel areas defined in a first direction and a second direction intersecting the first direction and a non-display area surrounding the display area, a plurality of pixels each including a pixel driving chip provided in a corresponding pixel area of the plurality of pixel areas of the substrate and a light emission part connected to the pixel driving chip, a plurality of pixel data transfer lines sequentially transferring digital pixel data to pixel driving chips of pixels arranged in the first direction, and a plurality of clock transfer lines sequentially transferring a reference clock to the pixel driving chips of the pixels arranged in the first direction. The pixel driving chip allows the light emission part to emit light, based on the digital pixel data and the reference clock input thereto.
    Type: Grant
    Filed: December 19, 2018
    Date of Patent: April 7, 2020
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Kyung-Rok Kim, Taegung Kim
  • Patent number: 10607539
    Abstract: A display apparatus comprises a plurality of scan lines and a plurality of data lines intersected with the scan lines in a grid, a plurality of pixel units, a first driving circuit for providing a plurality of scanning signals to the plurality of pixel units, and a plurality of pixel driving circuits. Each pixel driving circuit corresponds to one of the plurality of pixel units, and drives the corresponding pixel unit. Each pixel driving circuit comprises a switching transistor, a driving transistor, an organic light emitting diode and a reset transistor. The reset transistor pulls down a voltage applied on the driving transistor during a reset period under a control of a received another scanning signal having a phase previous to the scanning signal applied on a corresponding scan line being selected.
    Type: Grant
    Filed: August 11, 2017
    Date of Patent: March 31, 2020
    Assignee: HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: Po-Fu Chen, Kuo-Sheng Lee, Chung-Wen Lai
  • Patent number: 10593265
    Abstract: A compensation circuit and a manufacturing method thereof, a pixel circuit, a compensation device and a display device are disclosed. The OLED compensation circuit includes at least two sense transistors, the at least two sense transistors are in one-to-one correspondence with at least two sub-pixels in a pixel, and a first electrode of each of the sense transistors is electrically connected to a driving transistor of corresponding one of the sub-pixels; a magnitude relationship between channel width-to-length ratios of driving transistors of any two sub-pixels of the at least two sub-pixels is identical with a magnitude relationship between channel width-to-length ratios of two sense transistors corresponding to the two sub-pixels.
    Type: Grant
    Filed: January 16, 2018
    Date of Patent: March 17, 2020
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Quanhu Li, Song Meng
  • Patent number: 10593263
    Abstract: The OLED voltage of a selected pixel is extracted from the pixel produced when the pixel is programmed so that the pixel current is a function of the OLED voltage. One method for extracting the OLED voltage is to first program the pixel in a way that the current is not a function of OLED voltage, and then in a way that the current is a function of OLED voltage. During the latter stage, the programming voltage is changed so that the pixel current is the same as the pixel current when the pixel was programmed in a way that the current was not a function of OLED voltage. The difference in the two programming voltages is then used to extract the OLED voltage.
    Type: Grant
    Filed: February 5, 2018
    Date of Patent: March 17, 2020
    Assignee: Ignis Innovation Inc.
    Inventors: Yaser Azizi, Gholamreza Chaji
  • Patent number: 10566569
    Abstract: A light emitting device having a structure in which oxygen and moisture are prevented from reaching light emitting elements, and a method of manufacturing the same, are provided. Further, the light emitting elements are sealed by using a small number of process steps, without enclosing a drying agent. The present invention has a top surface emission structure. A substrate on which the light emitting elements are formed is bonded to a transparent sealing substrate. The structure is one in which a transparent second sealing material covers the entire surface of a pixel region when bonding the two substrates, and a first sealing material (having a higher viscosity than the second sealing material), which contains a gap material (filler, fine particles, or the like) for protecting a gap between the two substrates, surrounds the pixel region. The two substrates are sealed by the first sealing material and the second sealing material.
    Type: Grant
    Filed: March 23, 2018
    Date of Patent: February 18, 2020
    Assignee: Semiconductor Energy Laboratory Co., Ltd.
    Inventors: Takeshi Nishi, Yasuo Nakamura
  • Patent number: 10559179
    Abstract: An improved system and method for detecting smoke using an ionization sensor is disclosed herein. A smoke detector can comprise the ionization sensor, a smoke detector memory, and a microprocessor. The ionization sensor can comprise an ionization chamber. The smoke detector memory can comprise a smoke detector application, and a plurality of ionization smoke signatures. The plurality of ionization smoke signatures, wherein each of the ionization smoke signatures relates to how the ionization chamber interacts with one of a plurality of particulates. Each of the plurality of particulates can be indicative or non-indicative of a fire. The microprocessor can, according to instructions from the smoke detector application receive current data from the ionization sensor, and compare the current data with the plurality of ionization smoke signatures to determine if the current data matches any of the plurality of ionization smoke signatures.
    Type: Grant
    Filed: September 13, 2018
    Date of Patent: February 11, 2020
    Assignee: 4Morr Enterprises IP, LLC
    Inventors: Michael Orr, Eric Overton
  • Patent number: 10559260
    Abstract: The present invention relates to an organic light emitting diode display capable of suppressing voltage distribution inhomogeneity on a display panel so as to realize a brightness homogeneity of a display screen. The organic light emitting diode display comprises a substrate, an active region disposed on the substrate, and an annular wiring similarly formed on the substrate and surrounding the periphery of the active region to form a closed pattern, the supply voltage supplied to the active region is applied to the annular wiring.
    Type: Grant
    Filed: February 23, 2018
    Date of Patent: February 11, 2020
    Assignee: EVERDISPLAY OPTRONICS (SHANGHAI) LIMITED
    Inventors: Jie Ni, Nana Xiong
  • Patent number: 10553617
    Abstract: A pixel array including a first scan line, a first data line, a first signal line, a first pixel unit, and a second pixel unit is provided. The first pixel unit includes a first common electrode and a second common electrode. The first common electrode and the second common electrode are respectively located on a first side and a second side of the first scan line. The second common electrode is electrically connected to the first signal line through a first conductive structure. The second pixel unit includes a third common electrode and a fourth common electrode. The third common electrode and the fourth common electrode are respectively located on the first side and the second side of the first scan line. The third common electrode is electrically connected to the first signal line through a second conductive structure.
    Type: Grant
    Filed: March 6, 2018
    Date of Patent: February 4, 2020
    Assignee: Au Optronics Corporation
    Inventors: Jia-Hong Wang, Ya-Ling Hsu, Chen-Hsien Liao
  • Patent number: 10553173
    Abstract: A large-panel liquid crystal display uses wireless data transmission to provide display data to the pixels arranged in a two-dimensional array of pixel rows and pixel columns in the display area. Pixels are also arranged into pixel groups with each group having a plurality of pixel blocks. Antennas arranged in a two-dimensional array are used to receive wireless signals indicative of the display data from a wireless signal source and to provide display data to the pixels. Each antenna is connected to a different data line in a pixel group for providing display data to the pixel group. Antennas are embedded in the electronic layers on upper surface of the lower substrate and the wireless signal source is embedded in the backlight unit of the display. With wireless data transmission, data lines can be confined within the display area and not connected to conventional semiconductor data drivers.
    Type: Grant
    Filed: April 17, 2017
    Date of Patent: February 4, 2020
    Assignee: A.U. VISTA, INC.
    Inventors: Yu Sheng Huang, Cheng Nan Yeh
  • Patent number: 10553177
    Abstract: The present disclosure provides devices and techniques for dynamically adjusting the bias voltage (V) levels (e.g., low level gate voltage (VGL) and high level gate voltage (VGH)) for display screens made with thin-film transistor (TFT) technology based on a display run time. Thus, as the positive bias temperature stress for the TFTs increases over the course of the display lifetime, features of the present disclosure adjust the bias voltage levels to maintain operation margin (e.g., the ratio between the high level gate voltage (VGH) value and the voltage value which the display can maintain with normal operation). By dynamically adjusting the bias voltage levels, the TFT displays of the present disclosure consume lower power than their conventional counterparts and improve the lifetime of the display itself.
    Type: Grant
    Filed: February 6, 2019
    Date of Patent: February 4, 2020
    Assignee: MICROSOFT TECHNOLOGY LICENSING, LLC
    Inventors: Minhyuk Choi, Ying Zheng, Matthew Morris, Andrew Cady, Jerry Michael Hill, Gangok Lee, Rajesh Dighde
  • Patent number: 10542601
    Abstract: A light dimming system is disclosed. The system includes an alternating current (AC) power source having a main line carrying an AC mains voltage and a neutral line, a lighting control module connected to the main line and the neutral line of the AC power source, wherein the control module provides a mixed output signal that combines the AC mains voltage with an encoded dimming control signal, and an LED lighting fixture (“luminaire”) that is connected to the mixed output signal of the lighting control module and is under control of a line decoder module, wherein the line decoder module decodes the mixed output signal into the AC mains voltage and a dimming control signal for consumption by the luminaire.
    Type: Grant
    Filed: July 25, 2018
    Date of Patent: January 21, 2020
    Assignee: LiteIdeas, LLC
    Inventors: Paul D Rucker, Todd W Hodrinsky
  • Patent number: 10535290
    Abstract: Disclosed is a display device for increasing an aperture ratio of a transmissive part. The display device includes data lines overlapping with one or more of the pixels emitting light to display an image. Each pixel includes subpixels arranged within the pixel along a same direction as the data lines. The display device further includes transmissive parts arranged in the first direction and corresponding to adjacent pixels. In addition to the data lines overlapping the pixels, the display device may include power lines and reference voltage lines parallel with the data lines and overlapping with the pixels. The display device may include scan lines and sensing lines arranged to cross the transmissive parts and data lines. As a result, the number of lines crossing the transmissive parts is reduced, thereby increasing an aperture ratio of the transmissive parts.
    Type: Grant
    Filed: April 26, 2016
    Date of Patent: January 14, 2020
    Assignee: LG Display Co., Ltd.
    Inventors: Jeong Hyeon Choi, Binn Kim, Joon Soo Han
  • Patent number: 10535309
    Abstract: Disclosed is an organic light emitting display including: a display panel having a plurality of pixels arranged thereon; a degradation reduction circuit configured to detect a highly luminous still image pattern by analyzing input image data, and change a correlated color temperature (CCT) of a vulnerable color having the shortest lifespan in still image data corresponding to pixels displaying the highly luminous still image pattern so as to modulate the input image data into a degradation reduced data; and a display panel driving circuit configured to provide an analog data voltage, corresponding to the degradation.
    Type: Grant
    Filed: May 30, 2017
    Date of Patent: January 14, 2020
    Assignee: LG Display Co., Ltd.
    Inventors: Hojin Ryu, Minchul Byun
  • Patent number: 10529283
    Abstract: A pixel includes a plurality of transistors, a storage capacitor, and an organic light emitting diode. A first transistor controls the amount of current from a first driving power source to the organic light emitting diode based on a data voltage. A second transistor is connected to a data line and is turned on based on a scan signal. A third transistor coupled to the first transistor and is turned on based on the scan signal. A first stabilizing transistor is coupled to the third transistor or between the first and third transistors and is turned off when the third transistor is turned off.
    Type: Grant
    Filed: November 14, 2017
    Date of Patent: January 7, 2020
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventors: Chong Chul Chai, Dong Woo Kim, Kyoung Ju Shin, Bo Yong Chung
  • Patent number: 10522600
    Abstract: Disclosed is an organic light-emitting display device having a micro lens array (MLA) structure applied to a display panel in order to improve light extraction efficiency. In the organic light-emitting display device, an optical device, including a reactive mesogen (RM) and a dye, is provided between a polarizer and a quarter wave plate (QWP) to block light spreading to a viewing angle, thereby reducing a diffuse reflection component due to the application of the MLA structure.
    Type: Grant
    Filed: October 30, 2017
    Date of Patent: December 31, 2019
    Assignee: LG DISPLAY CO., LTD.
    Inventors: Young-Wook Kim, Hyun-Jong Noh, Seong-Han Hwang, Chi-Myung Ahn, Won-Hoe Koo, Ji-Hyang Jang
  • Patent number: 10522088
    Abstract: A signal processing circuit includes an accumulator circuit that accumulates display history information regarding light-emitting devices, and a detection circuit that detects the degree of deterioration of a display panel by the accumulated display history information and detects a rotation-recommended state of the display panel on the basis of the degree of deterioration. In the case where the display panel is divided into a plurality of blocks each including the same number of pixel circuits, the detection circuit detects the degree of deterioration for each of the blocks, and if the number of the blocks whose degrees of deterioration are greater than or equal to a first threshold value determined in advance is greater than or equal to a predetermined number, detects that the display panel is in the rotation-recommended state.
    Type: Grant
    Filed: June 15, 2018
    Date of Patent: December 31, 2019
    Assignee: JOLED INC.
    Inventor: Toshiyuki Kato
  • Patent number: 10522577
    Abstract: An image sensor may include: a pixel array having a plurality of pixels arranged in a matrix structure; and an image array including a plurality of image dots which are arranged in a matrix structure, and implemented by output signals of the respective pixels. The position of a first pixel in the pixel array may not correspond to the position of an image dot corresponding to the first pixel in the image array, and the position of a second pixel adjacent to the first pixel in the pixel array may correspond to the position of an image dot corresponding to the second pixel in the image array.
    Type: Grant
    Filed: September 27, 2017
    Date of Patent: December 31, 2019
    Assignee: SK hynix Inc.
    Inventor: Cha-Young Lee
  • Patent number: 10510293
    Abstract: An organic light-emitting display device and a driving method thereof. A first pixel of the plurality of pixels is initialized in response to a first gate signal of the gate signals, receives a first data signal input thereto in response to a second gate signal generated after the first gate signal, and is controlled by the emission control signal to emit light in response to the first data signal. A second pixel of the plurality of pixels is initialized in response to the second gate signal, receives a second data signal input thereto in response to a third gate signal generated after the second gate signal, and is controlled by the emission control signal to emit light in response to the second data signal. The size of a non-display area is reduced.
    Type: Grant
    Filed: November 30, 2017
    Date of Patent: December 17, 2019
    Assignee: LG Display Co., Ltd.
    Inventors: DaeSung Jung, SangMoo Song
  • Patent number: 10504406
    Abstract: A pixel circuit of a display panel is provided, which includes a light emitting element configured to emit light in accordance with a drive current, a current source including a driving transistor connected to the light emitting element, and the current source is configured to provide the drive current having a different amplitude to the light emitting element in accordance with a level of a voltage applied to a gate terminal of the driving transistor, an amplitude setting circuit configured to apply a voltage having a different level to the gate terminal of the driving transistor, and a pulse width control circuit configured to control a duration of the drive current by controlling the voltage applied to the gate terminal of the driving transistor.
    Type: Grant
    Filed: February 20, 2018
    Date of Patent: December 10, 2019
    Assignee: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Tetsuya Shigeta, Sang-young Park, Ho-seop Lee
  • Patent number: 10505640
    Abstract: Various embodiments include a system and method that control idling current of a pulse modulated driver. The system may include an audio input device configured to receive an audio input signal. The system can include sliding bias control circuitry configured to generate a sliding bias control signal based on a level of the audio input signal. The system may include sliding bias generation circuitry configured to generate a sliding bias voltage superimposed onto the audio input signal to generate a pulse modulated driver input signal that is input into an amplifier. The sliding bias voltage may be based on the sliding bias control signal.
    Type: Grant
    Filed: June 5, 2015
    Date of Patent: December 10, 2019
    Assignee: ETYMOTIC RESEARCH, INC.
    Inventor: Mead C. Killion
  • Patent number: 10497323
    Abstract: The disclosure discloses a pixel circuit, a method for driving the same, a display panel and a display device, which utilize a first initialization module, a data writing module, a threshold compensation module. Besides, since the pixel circuit is further provided with a second initialization module and the second initialization module is configured to enable a signal of a first voltage terminal to flow through the driving transistor before a light emitting device emits light, after the pixel circuit displays a low-grayscale image and before the pixel circuit displays a high-grayscale image, a large current is enabled to flow through the driving transistor to compensate for a threshold voltage hysteresis effect of the driving transistor, thereby improving the problem that the brightness of a first frame is low after an existing pixel circuit has switched from displaying a low-grayscale image to displaying a high-grayscale image.
    Type: Grant
    Filed: February 6, 2018
    Date of Patent: December 3, 2019
    Assignee: SHANGHAI TIANMA MICRO-ELECTRONICS CO., LTD.
    Inventors: Xingyao Zhou, Chuanli Leng, Yuan Li
  • Patent number: 10490143
    Abstract: A video display device includes a display panel that displays an image based on an image signal, and a light source substrate disposed on a rear side of the display panel. The light source substrate includes a plurality of light emitting elements disposed on a surface of the light source substrate on a side toward the display panel, and a plurality of driver elements that are disposed on the same surface of the light source substrate as the surface to which the plurality of light emitting elements are attached, and drive each of the plurality of light emitting elements.
    Type: Grant
    Filed: August 30, 2016
    Date of Patent: November 26, 2019
    Assignee: PANASONIC INTELLECTUAL PROPERTY MANAGEMENT CO., LTD.
    Inventors: Yasuhiro Kumamoto, Takeichi Shinya, Koujirou Higa, Masaaki Ofuji, Taizou Takeuchi, Tadahiro Kugimaru
  • Patent number: 10480721
    Abstract: This luminous flux control member has an entry region, a first fully reflective surface, an exit surface, a second fully reflective surface, a third fully reflective surface, and a connection surface. Some of the light emitted by the light-emission element enters via the entry region, subsequently reflects off the first fully reflective surface, and exits from the exit surface. The remainder of the light emitted by the light-emission element enters via the entry region, reflects off the second fully reflective surface and the third fully reflective surface in the stated order, exits from the connection surface, enters again via the first fully reflective surface, and subsequently exits from the exit surface.
    Type: Grant
    Filed: June 1, 2016
    Date of Patent: November 19, 2019
    Assignee: ENPLAS CORPORATION
    Inventor: Akinobu Seki
  • Patent number: 10475978
    Abstract: Embodiments provide a light emitting device package including a substrate, a light emitting structure disposed under the substrate and including a first conductive semiconductor layer, an active layer, and a second conductive semiconductor layer, first and second electrodes connected to the first and second conductive semiconductor layers, a first pad connected to the first electrodes in first-first through-holes penetrating the second conductive semiconductor layer and the active layer, and a first insulation layer disposed between the first pad and the second conductive semiconductor layer and between the first pad and the active layer to cover the first electrodes in a first-second through-hole, and a second pad connected to the second electrode through a second through-hole penetrating the first insulation layer and electrically spaced apart from the first pad.
    Type: Grant
    Filed: January 17, 2019
    Date of Patent: November 12, 2019
    Assignee: LG INNOTEK CO., LTD.
    Inventors: Sang Youl Lee, Kwang Ki Choi
  • Patent number: 10470264
    Abstract: A smart communication interface for a LED driving system driving a LED matrix having a plurality of LEDs. The smart communication interface may have a data write transaction structure in write mode. The data write transaction structure includes an address code for identifying a corresponding one LED among the plurality of LEDs; an R/W indicating code for indicating whether the smart communication interface is in write mode; and a grayscale command code for indicating a programmed grayscale command value for the corresponding one LED identified by the address code. The smart communication interface may include a data read transaction structure in read mode. The data read transaction structure includes the address code, the R/W indicating code and a grayscale read-back code for indicating a grayscale command value for the corresponding one LED identified by the address code.
    Type: Grant
    Filed: August 24, 2018
    Date of Patent: November 5, 2019
    Assignee: Monolithic Power Systems, Inc.
    Inventors: Zheng Luo, Junjian Zhao, Chao Liu, Tong Chen, Yu-Huei Lee
  • Patent number: 10460669
    Abstract: Disclosed is a circuit and technique to determine the temperature of an AMOLED display in order to calibrate programming data signals. The temperature of selected pixels of a plurality of pixels in an AMOLED display is measured via one of several disclosed methods. A thermal sensor for the selected pixels may be used. A measurement of output voltage data may be used to estimate temperature. A finite element analysis model may be used based on consumed power of the selected pixel. The temperature data for the selected pixel is then interpolated to the neighboring non-selected pixels to estimate the temperature of those pixels.
    Type: Grant
    Filed: May 15, 2018
    Date of Patent: October 29, 2019
    Assignee: Ignis Innovation Inc.
    Inventors: Javid Jaffari, Gholamreza Chaji, Tong Liu
  • Patent number: 10459679
    Abstract: A display system and methods; in general, a plurality of display sub-assemblies collectively creating a viewing plane. Each display sub-assembly having a plurality of light emitting elements on a substrate with a plurality of substantially equal pixel gaps between light emitting elements. Bend gaps are provided between pixels that enable the display sub-assemblies to bend thereby creating a curved viewing plane. A mobile LED panel display may be formed of a plurality of LED display modules having a plurality of pixels, four or more casters, a battery powered supply, a media player (electrically communicating with the plurality of display modules for controlling the display of images on the LED panel display, and a removable content storage device and; thus, functions as a rugged, light weight, battery powered display to inform customers and passers-by about product and service offerings via a rugged person size mobile light weight battery powered display.
    Type: Grant
    Filed: January 3, 2019
    Date of Patent: October 29, 2019
    Assignee: Nanolumens Acquisition, Inc.
    Inventors: Richard Craig Cope, Douglas Andrew Price, Drew Fredrick Meincke, Jorge Perez-Bravo, Joshua McKellar Byrd
  • Patent number: 10453413
    Abstract: The present application discloses an array substrate comprising a plurality of gate lines and a plurality of data lines crossing over each other thereby defining an array of a plurality of sub-pixel areas, each sub-pixel area comprising a pixel electrode and multiple switching transistors having respective gate electrodes coupled to multiple different gate lines, wherein the pixel electrode is configured to be charged by a data signal from a data line only with all the multiple switching transistors being turned on concurrently during a pixel electrode charging period by an effective voltage level applied on the respective multiple different gate lines.
    Type: Grant
    Filed: March 29, 2017
    Date of Patent: October 22, 2019
    Assignee: BOE TECHNOLOGY GROUP CO., LTD.
    Inventors: Seungwoo Han, Guangliang Shang
  • Patent number: 10453397
    Abstract: A method and system for operating a pixel array having at least one pixel circuit is provided. The method includes repeating an operation cycle defining a frame period for a pixel circuit, including at each frame period, programming the pixel circuit, driving the pixel circuit, and relaxing a stress effect on the pixel circuit, prior to a next frame period. The system includes a pixel array including a plurality of pixel circuits and a plurality of lines for operation of the plurality of pixel circuits. Each of the pixel circuits includes a light emitting device, a storage capacitor, and a drive circuit connected to the light emitting device and the storage capacitor. The system includes a drive for operating the plurality of lines to repeat an operation cycle having a frame period so that each of the operation cycle comprises a programming cycle, a driving cycle and a relaxing cycle for relaxing a stress on a pixel circuit, prior to a next frame period.
    Type: Grant
    Filed: October 15, 2018
    Date of Patent: October 22, 2019
    Assignee: Ignis Innovation Inc.
    Inventors: Arokia Nathan, Gholamreza Chaji
  • Patent number: 10453386
    Abstract: An emission control driver includes a plurality of stages. Each stage includes three circuit blocks and two output transistors. A first circuit block generates first and second control signals based on a first clock signal and a start signal or carry signal. A second circuit block controls the voltage level of the first control signal based on the first control signal and a second clock signal. A third circuit block generates a third control signal based on the second control signal and the second clock signal. The first output transistor outputs a first voltage as an emission control signal based on the first control signal. A second output transistor outputs a second voltage as the emission control signal based on the third control signal. The second circuit block maintains the voltage level of the first control signal while the first output transistor is turned off.
    Type: Grant
    Filed: May 24, 2017
    Date of Patent: October 22, 2019
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventor: Hwan-Soo Jang
  • Patent number: 10446075
    Abstract: An organic light emitting display device includes a step difference compensation pattern that may reduce imbalance or asymmetry below a pixel electrode. The step difference compensation pattern is on a first protection layer and is separated from a conductive line. A second protection layer is on the conductive line and the first step difference compensation pattern. An organic light emitting layer is between the first electrode and a second electrode. The first electrode is on the second protection layer and overlaps at least a part of the conductive line and at least a part of the first step difference compensation pattern.
    Type: Grant
    Filed: February 7, 2018
    Date of Patent: October 15, 2019
    Assignee: SAMSUNG DISPLAY CO., LTD.
    Inventor: Chulhyun Choi
  • Patent number: 10431157
    Abstract: A pixel driving circuit using 4T2C pixel structure applied in an OLED display device is provided. The OLED display device senses a threshold voltage imposed on the TFT and a turn-on voltage imposed on the OLED when the OLED display device is powered off or powered on and compensates the threshold voltage which is sensed in normal operating display and the turn-on voltage imposed on the OLED for raw data signals, thereby reducing the influence of the threshold voltage imposed on the TFT on the turn-on voltage of the OLED and improving the display quality of the OLED display device.
    Type: Grant
    Filed: September 14, 2017
    Date of Patent: October 1, 2019
    Assignee: Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd
    Inventor: Yuying Cai