公开(公告)号：US11682361B2

公开(公告)日：2023-06-20

申请号：US17746994

申请日：2022-05-18

Applicant: SEIKO EPSON CORPORATION

Inventor： Hiroyuki Oikawa

IPC: G09G3/36 ,  G02F1/1339 ,  G02F1/1343 ,  G02F1/1337

CPC classification number: G09G3/3614 ,  G02F1/1339 ,  G02F1/133719 ,  G02F1/133757 ,  G02F1/134336 ,  G09G3/3648 ,  G09G2300/0413 ,  G09G2320/0257

Abstract: In a liquid crystal device, an electrode is provided between a pixel area of a first substrate and a seal material, and an AC signal is applied to the electrode where a potential with respect to a common potential applied to a common electrode as a reference potential is alternately switched between a positive polarity and a negative polarity. For the AC signal, a length of a positive polarity period where a polarity becomes positive with respect to the common potential and a length of a negative polarity period where a polarity becomes negative with respect to the common potential are different. When anionic impurities of a liquid crystal layer are focused, a positive polarity period length is greater than a negative polarity period length. When cationic impurities of the liquid crystal layer are focused, a negative polarity period length is greater than a positive polarity period length.

公开(公告)号：US20230186854A1

公开(公告)日：2023-06-15

申请号：US18077611

申请日：2022-12-08

Applicant: LG Display Co., Ltd.

Inventor： MunChae Yoon ,  SangWook Lee ,  JeongHyeon Choi

IPC: G09G3/3233 ,  G09G3/3266

CPC classification number: G09G3/3233 ,  G09G3/3266 ,  G09G2300/0426 ,  G09G2310/0202 ,  G09G2310/0267 ,  G09G2310/08 ,  G09G2300/0842 ,  G09G2300/0408 ,  G09G2320/0257 ,  G09G2320/0261 ,  G09G3/32

Abstract: A display device may comprise a substrate, a plurality of driving transistors on the substrate, a plurality of anode electrodes connected with the plurality of driving transistors, a light emitting layer on the plurality of anode electrodes, and a plurality of split cathode electrodes on the light emitting layer. Each of the plurality of split cathode electrodes may alternate between a first state applied with a cathode voltage and a second state of floating not applied with the cathode voltage.

公开(公告)号：US11670225B2

公开(公告)日：2023-06-06

申请号：US17700016

申请日：2022-03-21

Applicant: SAMSUNG DISPLAY CO., LTD.

Inventor： Jung Taek Kim ,  Sang Su Han ,  Kyun Ho Kim ,  Hyung Keun Park ,  Joon Suk Baik ,  Se Keun Lee

IPC: G09G3/32 ,  G09G3/20 ,  G09G3/3233 ,  G09G3/36

CPC classification number: G09G3/32 ,  G09G3/2092 ,  G09G3/3233 ,  G09G3/36 ,  G09G3/3648 ,  G09G2310/0205 ,  G09G2310/027 ,  G09G2310/0278 ,  G09G2310/061 ,  G09G2310/062 ,  G09G2320/0252 ,  G09G2320/0257 ,  G09G2320/0261 ,  G09G2320/0295 ,  G09G2320/043 ,  G09G2320/0673 ,  G09G2330/021

Abstract: A display device includes: a plurality of pixel blocks each including a plurality of pixels; a scan driver supplying a scan signal to the scan lines and to supply a control signal to the control lines; a data driver supplying an image data voltage or a low grayscale data voltage to the data lines; and a power supply supplying a reference voltage to the pixels, wherein the pixels are configured to receive the image data voltage during a first scan period of a frame, and to receive the low grayscale data voltage during a second scan period of the frame, and the reference voltage supplied to a first pixel row of at least one of the pixel blocks in the first scan period is different from the reference voltage supplied to a last pixel row of at least one of the pixel blocks in the first scan period.

公开(公告)号：US20230169929A1

公开(公告)日：2023-06-01

申请号：US17749262

申请日：2022-05-20

Applicant: Qisda Corporation

Inventor： Min-Jye CHEN

IPC: G09G3/34 ,  G09G3/32

CPC classification number: G09G3/3406 ,  G09G3/32 ,  G09G2310/08 ,  G09G2310/0237 ,  G09G2320/064 ,  G09G2310/06 ,  G09G2320/0257 ,  G09G2320/062 ,  G09G2370/022

Abstract: The application discloses an image display device and a control method thereof. The control method for the image display device includes: receiving a first image signal from a host and displaying a frame, a first frame data of the first image signal having a first frequency; determining that the image display device enters a Motion Blur Reduction (MBR) mode and writing a double frequency of a vertical synchronous signal into a storage unit; and informing the host to read the storage unit and alternatively outputting a second frame data and a black-insertion frame data from the host, the second frame data having a second frequency higher than the first frequency.

公开(公告)号：US11657774B2

公开(公告)日：2023-05-23

申请号：US17948224

申请日：2022-09-19

Applicant: E INK CORPORATION

Inventor： Karl Raymond Amundson ,  Teck Ping Sim

IPC: G09G3/34

CPC classification number: G09G3/344 ,  G09G2300/04 ,  G09G2300/08 ,  G09G2310/0251 ,  G09G2310/08 ,  G09G2320/0204 ,  G09G2320/0257

Abstract: An apparatus for driving an electro-optic display may comprise a first switch designed to supply a voltage to the electro-optic display during a first driving phase, a second switch designed to control the voltage during a second driving phase and a resistor coupled to the first and second switches for controlling the rate of decay of the voltage during the second driving phase.

公开(公告)号：US11657773B2

公开(公告)日：2023-05-23

申请号：US17899283

申请日：2022-08-30

Applicant: E INK CORPORATION

Inventor： Karl Raymond Amundson ,  Matthew J. Aprea ,  Kenneth R. Crounse ,  Demetrious Mark Harrington ,  Jason Lin ,  Theodore A. Sjodin ,  Chia-Chen Su

IPC: G09G3/34

CPC classification number: G09G3/344 ,  G09G2310/06 ,  G09G2310/062 ,  G09G2310/063 ,  G09G2310/068 ,  G09G2320/0204 ,  G09G2320/0209 ,  G09G2320/0257

Abstract: A variety of methods for driving electro-optic displays so as to reduce visible artifacts are described. Such methods include (a) applying a first drive scheme to a non-zero minor proportion of the pixels of the display and a second drive scheme to the remaining pixels, the pixels using the first drive scheme being changed at each transition; (b) using two different drive schemes on different groups of pixels so that pixels in differing groups undergoing the same transition will not experience the same waveform; (c) applying either a balanced pulse pair or a top-off pulse to a pixel undergoing a white-to-white transition and lying adjacent a pixel undergoing a visible transition; (d) driving extra pixels where the boundary between a driven and undriven area would otherwise fall along a straight line; and (e) driving a display with both DC balanced and DC imbalanced drive schemes, maintaining an impulse bank value for the DC imbalance and modifying transitions to reduce the impulse bank value.

公开(公告)号：US20230154407A1

公开(公告)日：2023-05-18

申请号：US17619829

申请日：2021-02-09

Applicant: Hefei Xinsheng Optoelectronics Technology Co., Ltd. ,  BOE Technology Group Co., Ltd.

Inventor： Yongqian LI ,  Xuehuan FENG

IPC: G09G3/3258

CPC classification number: G09G3/3258 ,  G09G2300/0426 ,  G09G2310/0202 ,  G09G2310/08 ,  G09G2300/0842 ,  G09G2300/0819 ,  G09G2320/0257 ,  G09G2330/021

Abstract: A pixel circuit, a driving method of pixel circuit, and a display device are provided. The pixel circuit includes: a light emitting device, a driving sub-circuit, an energy storage sub-circuit, a data writing sub-circuit and a pull-down sub-circuit; the data writing sub-circuit is configured to control a voltage signal on a data line to be written into a control end of the driving sub-circuit in response to a data writing control signal; a first end of the driving sub-circuit is electrically connected to a target node, a second end of the driving sub-circuit is electrically connected to a power supply voltage, and the driving sub-circuit is configured to control a conduction of the driving sub-circuit under a control of a voltage on a control end of the driving sub-circuit.

公开(公告)号：US20190213970A1

公开(公告)日：2019-07-11

申请号：US16179671

申请日：2018-11-02

Applicant: BOE TECHNOLOGY GROUP CO., LTD. ,  HEFEI XINSHENG OPTOELECTRONICS TECHNOLOGY CO., LTD.

Inventor： Zixuan WANG ,  Peng CHEN ,  Tong YANG ,  Xianrui QIAN ,  Yuting CHEN ,  Suzhen MU ,  Zhou RUI ,  Xiong XIONG

IPC: G09G3/36 ,  G11C19/28

CPC classification number: G09G3/3677 ,  G09G2310/0286 ,  G09G2310/06 ,  G09G2320/0257 ,  G11C19/28

Abstract: A shift register circuit includes a pull-up control sub-circuit, a pull-up sub-circuit and a shutdown auxiliary sub-circuit. The pull-up control sub-circuit is configured to transmit a voltage from the signal input terminal to the pull-up node under the control of the voltage from the signal input terminal. The shut-down auxiliary sub-circuit is configured to pull down a voltage of the pull-up node to a voltage of the discharge voltage terminal under the control of a voltage from the pull-up node. The pull-up sub-circuit is configured to transmit a voltage from the clock signal terminal to the first signal output terminal under the control of a voltage from the pull-up node. The first signal output terminal is configured to be connected to a gate line.

公开(公告)号：US20190206337A1

公开(公告)日：2019-07-04

申请号：US16233966

申请日：2018-12-27

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Yoosun JUNG ,  Shinhaeng Kim ,  Wonseok Song

IPC: G09G3/34 ,  G09G3/36

CPC classification number: G09G3/3406 ,  G09G3/36 ,  G09G2320/0247 ,  G09G2320/0257 ,  G09G2320/0261 ,  G09G2320/0606 ,  G09G2320/0646 ,  G09G2320/103 ,  G09G2320/106 ,  G09G2354/00

Abstract: A display apparatus and control method thereof are provided. The display apparatus includes: a display panel; a driver configured to drive the display panel based on an image signal; a light source configured to supply light for making an image visible on the display panel; and a processor configured to: control the light source to have two or more emissive sections during a displaying period for one video frame of the image signal, and control a first emissive section and a second emissive section, of the two or more emissive sections, to have different widths in accordance with a change in the image.

公开(公告)号：US20190164496A1

公开(公告)日：2019-05-30

申请号：US16264770

申请日：2019-02-01

Applicant: Japan Display Inc.

Inventor： Hiroyuki KIMURA ,  Seiichiro JINTA

IPC: G09G3/3258

CPC classification number: G09G3/3258 ,  G09G2300/0452 ,  G09G2300/0804 ,  G09G2310/061 ,  G09G2320/0257 ,  G09G2320/045

Abstract: A light emitting element display device with a narrow frame and high light emission efficiency is provided even when high definition is achieved. The light emitting element display device includes: a light emitting element which emits light at each of a plurality of subpixels forming one pixel; a drive transistor in which one of a source and a drain is connected to an anode of the light emitting element; and an output control circuit which selectively sets the other of the source and the drain of the drive transistor into one of a state of being connected to a power-supply voltage, a state of being connected to a reset voltage that is a lower voltage than the power-supply voltage, and a high-impedance state of not being connected to any of these voltages.