公开(公告)号：US20240169943A1

公开(公告)日：2024-05-23

申请号：US18224694

申请日：2023-07-21

Applicant: CYTESI, INC.

Inventor： Tung-Yu WU ,  Chung-Yi WANG ,  Tang-Hung PO

IPC: G09G3/34

CPC classification number: G09G3/348 ,  G09G2300/0842 ,  G09G2300/0871

Abstract: An apparatus including a pixel electrode circuit is provided. The pixel electrode circuit includes a first switch, a second switch, a first-type transistor, a first second-type transistor, and a second second-type transistor. The first switch and the second switch are respectively controlled by a first control signal and a second control signal. The first-type transistor includes a gate electrically connected to a first node, a first terminal connected to a first power supply voltage, and a second terminal connected to a third node. The first second-type transistor includes a gate electrically connected to a second node, a first terminal connected to a second power supply voltage, and a second terminal connected to the third node. The second second-type transistor includes a gate electrically connected to the second node, a first terminal being grounded, and a second terminal providing an output voltage.

公开(公告)号：US20240087540A1

公开(公告)日：2024-03-14

申请号：US18513646

申请日：2023-11-20

Applicant: Mianyang HKC Optoelectronics Technology Co., Ltd. ,  HKC CORPORATION LIMITED

Inventor： Tao FAN ,  Haijiang YUAN

IPC: G09G3/34

CPC classification number: G09G3/348 ,  G09G2320/0271

Abstract: The pixel driving circuit includes a sequential control unit, a first switch unit, a second switch unit, and a power supply unit. The power supply unit provides a constant driving voltage. In one control period, a voltage difference between a first electrode and a second electrode of the electrowetting pixel device is flipped to prevent the first electrode and the second electrode of the electrowetting pixel device from problems of charge trapping and ink splitting due to charge accumulation.

公开(公告)号：US11860501B2

公开(公告)日：2024-01-02

申请号：US16971400

申请日：2019-11-29

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Xianqin Meng ,  Xiandong Meng ,  Wei Wang ,  Xiaochuan Chen

IPC: G02F1/166 ,  G02F1/1676 ,  G02F1/16757 ,  G02F1/1677 ,  G09G3/34 ,  G02B27/01

CPC classification number: G02F1/166 ,  G02F1/1676 ,  G02F1/1677 ,  G02F1/16757 ,  G09G3/348 ,  G02B27/0172

Abstract: An optical switch includes a plurality of micro-grooves, a micro-fluid disposed in each micro-groove of the plurality of micro-grooves, and a driving electrode disposed corresponding to the micro-fluid in each micro-groove. The driving electrode is configured to provide a voltage to a corresponding micro-fluid to control light transmittance of a region where the micro-fluid is located.

公开(公告)号：US11826755B2

公开(公告)日：2023-11-28

申请号：US17363792

申请日：2021-06-30

Applicant: Shanghai AVIC OPTO Electronics Co., Ltd.

Inventor： Kerui Xi ,  Feng Qin ,  Xiangjian Kong ,  Jiubin Zhou ,  Guicai Wang ,  Yajie Wang ,  Tingting Cui

IPC: B01L3/00 ,  G01N27/22 ,  G09G3/34 ,  H01L27/12 ,  H03K17/687 ,  H05B45/30

CPC classification number: B01L3/502715 ,  B01L3/50273 ,  G01N27/228 ,  G09G3/348 ,  H01L27/124 ,  H01L27/1255 ,  H03K17/687 ,  H05B45/30 ,  B01L2400/0427 ,  G09G2300/0426

Abstract: A panel includes a substrate, an array layer and an electrode array layer. The array layer is on a side of the substrate; the electrode array layer is on a side of the array layer away from the substrate; and the array layer includes an active layer, a gate metal layer and a source/drain metal layer. The substrate includes drive units arranged in an array, scan line groups, data lines extending in a second direction; and common signal lines extending in the second direction. The scan line group includes first scan lines and second scan lines, extending in a first direction. The first direction is perpendicular with the second direction. The electrode array layer includes drive electrodes arranged in an array; the drive electrodes correspond to the drive units; and the drive unit includes a first transistor, a second transistor, a third transistor, a first capacitor and a second capacitor.

公开(公告)号：US20190212543A1

公开(公告)日：2019-07-11

申请号：US15576694

申请日：2017-06-12

Applicant: BOE TECHNOLOGY GROUP CO., LTD.

Inventor： Xin LI

IPC: G02B26/00 ,  G09G3/34 ,  F21V8/00

CPC classification number: G02B26/005 ,  G02B6/0041 ,  G02B6/0048 ,  G02B6/0055 ,  G09G3/348

Abstract: A light guide plate is disclosed, including a plurality of light-adjusting panels disposed on or over a light-emitting side of the light guide plate. The plurality of light-adjusting panels are arranged in an array with a gap arranged between every two adjacent light-adjusting panels, and are configured to be controllable in a transparent state or in an opaque state to thereby realize a switch between a large divergence angle or a small divergence angle. Each light-adjusting panel includes oppositely disposed first electrode and second electrode, and a light adjusting layer disposed therebetween. The light adjusting layer is configured to be in an opaque state or in a transparent state depending on whether there is an electric field between the first electrode and the second electrode. A backlight assembly and a display apparatus containing the light guide plate, as well as a control method thereof, are also disclosed.

公开(公告)号：US10078986B2

公开(公告)日：2018-09-18

申请号：US14854607

申请日：2015-09-15

Applicant: Sharp Life Science (EU) Limited

Inventor： Benjamin James Hadwen

IPC: G09G3/34 ,  G02B26/00

CPC classification number: G09G3/348 ,  B01L3/502792 ,  B01L2300/0645 ,  B01L2300/0663 ,  G02B26/005 ,  G09G2300/0421 ,  G09G2310/0208 ,  G09G2310/0294 ,  G09G2310/062 ,  G09G2320/0295

Abstract: An active matrix electro-wetting on dielectric (AM-EWOD) device includes a plurality of array elements arranged in an array, each of the array elements including array element circuitry, an element electrode, and a reference electrode. The array element circuitry includes an actuation circuit configured to apply actuation voltages to the electrodes, and an impedance sensor circuit configured to sense impedance at the array element electrode to determine a droplet property at the array element. The impedance sensor circuit is operated by perturbing a potential applied to the reference electrode. The AM-EWOD device includes a common row addressing line. The impedance sensor circuit further is operated by supplying voltage signals over the common addressing line to effect both a reset operation and an operation for selecting a row in the array to be sensed. The circuitry isolates the array element from the actuation voltage during operating the impedance sensor circuit.

公开(公告)号：US10078213B1

公开(公告)日：2018-09-18

申请号：US15429670

申请日：2017-02-10

Applicant: Amazon Technologies, Inc.

Inventor： Gerben Boon ,  Christian Etienne Hendriks ,  Daniel Figura

IPC: G02B26/00 ,  G02B26/02 ,  G02B1/10 ,  G02B1/12 ,  G09G3/34 ,  G02B5/00 ,  G03F7/00 ,  G03F7/16 ,  G03F7/20 ,  G03F7/26

CPC classification number: G02B26/005 ,  G02B1/12 ,  G02B5/003 ,  G02B26/004 ,  G03F7/0005 ,  G03F7/16 ,  G03F7/20 ,  G03F7/2002 ,  G03F7/26 ,  G09G3/34 ,  G09G3/348 ,  G09G2300/04

Abstract: A method for fabricating an electrowetting display may include depositing a sacrificial layer on a support plate, etching portions of the sacrificial layer to form liquid duct forms on the support plate, depositing a photoresist layer on the liquid duct forms and the support plate, etching portions of the photoresist layer to form a spacer grid, and removing the liquid duct forms to form liquid ducts between the support plate and the portions of the spacer grid.

公开(公告)号：US10074321B2

公开(公告)日：2018-09-11

申请号：US15087778

申请日：2016-03-31

Applicant: AMAZON TECHNOLOGIES, INC.

Inventor： Petrus Maria de Greef

IPC: G09G3/34 ,  G09G3/20

CPC classification number: G09G3/348 ,  G09G3/2003 ,  G09G3/2011 ,  G09G3/2059 ,  G09G2300/0452 ,  G09G2310/08 ,  G09G2320/0242 ,  G09G2320/0626 ,  G09G2330/021 ,  G09G2340/16

Abstract: Systems and methods for driving an electrowetting display device including a plurality of sub-pixels are presented. A reflectance level of a first sub-pixel in the plurality of sub-pixels is set to a minimum reflectance level or a threshold reflectance level. A reflectance quantization error is determined and a second reflectance level of a second sub-pixel in the plurality of sub-pixels is set to a second target reflectance level of the second sub-pixel plus a first fraction of the reflectance quantization error. A third reflectance level of a third sub-pixel in the plurality of sub-pixels is set to a third target reflectance level of the third sub-pixel plus a second fraction of the reflectance quantization error, and a fourth reflectance level of a fourth sub-pixel in the plurality of sub-pixels is set to a fourth target reflectance level of the fourth sub-pixel plus a third fraction of the reflectance quantization error.

公开(公告)号：US10018828B2

公开(公告)日：2018-07-10

申请号：US14579903

申请日：2014-12-22

Applicant: Amazon Technologies, Inc.

Inventor： Romaric Mathieu Massard

IPC: G02B26/00 ,  G09G3/34

CPC classification number: G02B26/005 ,  G09G3/348 ,  G09G2300/08

Abstract: An electrowetting display device comprising a first fluid; a second fluid immiscible with the first fluid; a first support plate having: a surface adjoined by at least one of the first or second fluids, and a first electrode. The device further comprises a second support plate; a second electrode in electrical contact with the second fluid; and a third electrode. The device comprises a protrusion formed as part of at least one of the first support plate or the second support plate. The protrusion has an elongate shape extending from one to the other of the first or second support plates. The protrusion comprises a protrusion surface formed of a material which, without a voltage applied, is less wettable for the first fluid than the surface of the first support plate.

公开(公告)号：US09939484B1

公开(公告)日：2018-04-10

申请号：US14135090

申请日：2013-12-19

Applicant: Amazon Technologies, Inc.

Inventor： Toru Sakai ,  Jozef Elisabeth Aubert

IPC: G01R31/26 ,  G01R31/28 ,  G09G3/34

CPC classification number: G01R31/2601 ,  G01R31/2896 ,  G09G3/348

Abstract: A method for operating a display device includes configuring at least a portion of a row or at least a portion of a column of pixels of the display device to produce interconnected pixels, wherein the interconnected pixels are interconnected to one another in an electrically parallel configuration to create a parallel capacitance that is larger than capacitances of each of the interconnected pixels; connecting a voltage-measuring probe to drains of TFTs of the interconnected pixels; applying source voltages to the TFTs of the interconnected pixels from one or more source lines and applying a gate voltage to the TFTs of the interconnected pixels from one or more gate lines; and measuring voltage of the TFT drains of the interconnected pixels.