公开(公告)号：US20230343260A1

公开(公告)日：2023-10-26

申请号：US18345523

申请日：2023-06-30

Applicant: E INK CORPORATION

Inventor： Karl Raymond AMUNDSON ,  Teck Ping SIM ,  Michael D. MCCREARY ,  Yi LU

IPC: G09G3/00 ,  G01R27/16 ,  G09G3/20 ,  G09G3/34

CPC classification number: G09G3/006 ,  G01R27/16 ,  G09G3/2007 ,  G09G3/344 ,  G09G2310/06 ,  G09G2320/0257

Abstract: A method for driving electro-optic displays including electro-optic material disposed between a common electrode and a backplane. The backplane includes an array of pixel electrodes, each coupled to a transistor. A display controller applies waveforms to the pixel electrodes. The method includes applying first measurement waveforms to a first portion of the pixel electrodes. During each frame of the first measurement waveforms, the same time-dependent voltages are applied to each pixel electrode of the first portion of pixel electrodes. The method includes determining the impedance of the electro-optic material in proximity to the first portion of pixel electrodes based on a measurement of the current flowing through a current measurement circuit and the time-dependent voltages applied to each pixel electrode during the first measurement waveforms, and selecting driving waveforms based on the impedance of the electro-optic material in proximity to the first portion of pixel electrodes.

公开(公告)号：US20190272791A1

公开(公告)日：2019-09-05

申请号：US16413809

申请日：2019-05-16

Applicant: E INK CORPORATION

Inventor： George G. HARRIS ,  Shamus Ford PATRY ,  Michael D. MCCREARY

IPC: G09G3/34 ,  G09G3/20

Abstract: Video displays using relatively low frame rates of about 10 to about 20 frames per second, but having acceptable video quality are described. The displays may use bistable media, and may be driven such that the medium, when driven, changes its optical properties continuously during the driving of each frame. The displays may use an electro-optic medium such that the frame period is from about 50 to about 200 per cent of the switching time of the electro-optic medium at the driving voltage used.

公开(公告)号：US20190094646A1

公开(公告)日：2019-03-28

申请号：US16198142

申请日：2018-11-21

Applicant: E Ink Corporation

Inventor： Richard J. PAOLINI, Jr. ,  Michael D. MCCREARY ,  Carl TAUSSIG ,  Paul APEN ,  George G. HARRIS ,  Sunil Krishna SAINIS ,  Joseph FILLION

IPC: G02F1/167 ,  B43L1/12 ,  G02F1/1333 ,  G02F1/1335 ,  E04F13/18 ,  G02F1/1343 ,  E04F13/08

Abstract: Electro-optic, especially electrophoretic, displays are used in variety of architectural and furniture applications, including a tile (100) comprising an electro-optic layer (110) capable of changing the color of the file, front and multiple rear electrodes and a light-transmissive polymeric layer (102), the exposed surface of which is textured to provide a plurality of facets inclined to the plane of the tile (100), the rear electrodes being aligned with the facets. A variable color writable board is also provided.

公开(公告)号：US20170131612A1

公开(公告)日：2017-05-11

申请号：US15402273

申请日：2017-01-10

Applicant: E INK CORPORATION

Inventor： Richard J. PAOLINI, JR. ,  Michael D. MCCREARY ,  Charles Howie HONEYMAN ,  Bin WU

IPC: G02F1/167 ,  C09J175/04 ,  G06F3/0354

CPC classification number: G02F1/167 ,  C08J7/16 ,  C09J175/04 ,  G02F1/01 ,  G02F1/061 ,  G02F1/13306 ,  G02F1/133514 ,  G02F1/172 ,  G02F2001/133354 ,  G02F2001/1672 ,  G02F2001/1676 ,  G02F2001/1678 ,  G02F2202/022 ,  G02F2202/28 ,  G06F3/03545

Abstract: A first electro-optic display comprises first and second substrates, and an adhesive layer and a layer of electro-optic material disposed between the first and second substrates, the adhesive layer comprising a mixture of a polymeric adhesive material and a hydroxyl containing polymer having a number average molecular weight not greater than about 5000. A second electro-optic display is similar to the first but has an adhesive layer comprising a thermally-activated cross-linking agent to reduce void growth when the display is subjected to temperature changes. A third electro-optic display, intended for writing with a stylus or similar instrument, is produced by forming a layer of an electro-optic material on an electrode; depositing a substantially solvent-free polymerizable liquid material over the electro-optic material; and polymerizing the polymerizable liquid material.

公开(公告)号：US20230206796A1

公开(公告)日：2023-06-29

申请号：US18146608

申请日：2022-12-27

Applicant: E INK CORPORATION

Inventor： Karl Raymond AMUNDSON ,  Teck Ping SIM ,  Michael D. MCCREARY ,  Yi LU ,  Kosta LADAVAC

IPC: G09G3/00 ,  G01R27/16 ,  G09G3/34 ,  G09G3/20

CPC classification number: G09G3/006 ,  G01R27/16 ,  G09G3/344 ,  G09G3/2007 ,  G09G2310/06 ,  G09G2320/0257

Abstract: A method for driving electro-optic displays including electro-optic material disposed between a common electrode and a backplane. The backplane includes an array of pixel electrodes, each coupled to a transistor. A display controller applies waveforms to the pixel electrodes. The method includes applying first measurement waveforms to a first portion of the pixel electrodes. During each frame of the first measurement waveforms, the same time-dependent voltages are applied to each pixel electrode of the first portion of pixel electrodes. The method includes determining the impedance of the electro-optic material in proximity to the first portion of pixel electrodes based on a measurement of the current flowing through a current measurement circuit and the time-dependent voltages applied to each pixel electrode during the first measurement waveforms, and selecting driving waveforms based on the impedance of the electro-optic material in proximity to the first portion of pixel electrodes.

公开(公告)号：US20230048575A1

公开(公告)日：2023-02-16

申请号：US17975658

申请日：2022-10-28

Applicant: E Ink Corporation

Inventor： Michael D. MCCREARY ,  Richard J. PAOLINI, Jr. ,  Stephen J. TELFER ,  Samantha MORRILL

IPC: G02F1/167 ,  G06F3/0354 ,  B32B17/10 ,  G02F1/00

Abstract: An electro-optic device comprising electrophoretic medium including a dispersion of a plurality of particles in a fluid configured to migrate within the fluid in a direction responsive to an applied electric field. The plurality of particles include a first type of particles having a first charge of a first charge polarity, a second type of particles having a second charge of a second charge polarity, and a third type of particles having a third charge of the second charge polarity. The first charge polarity is opposite to the second charge polarity, and the third type of particles are configured to migrate within the fluid in a direction responsive to an applied magnetic field gradient.

公开(公告)号：US20170097525A1

公开(公告)日：2017-04-06

申请号：US15379574

申请日：2016-12-15

Applicant: E INK CORPORATION

Inventor： Guy M. DANNER ,  Shamus Ford PATRY ,  Charles Howie HONEYMAN ,  Thomas H. WHITESIDES ,  Michael D. MCCREARY ,  Gregg M. DUTHALER

IPC: G02F1/01 ,  G02F1/167 ,  G02F1/161

CPC classification number: G02F1/0107 ,  G02F1/133305 ,  G02F1/1339 ,  G02F1/155 ,  G02F1/161 ,  G02F1/167 ,  G02F2201/50

Abstract: Various types of edge seals for protecting electro-optic displays against environmental contaminants are described. In one type of seal, the electro-optic layer is sandwiched between a backplane and a protective sheet and a sealing material extends between the backplane and the protective sheet. In other seals, the protective sheet is secured to the backplane or to a second protective sheet adjacent the backplane. The electro-optic layer can also be sealed between two layers of adhesive or between one layer of adhesive and the backplane. Other seals make use of flexible tapes extending around the periphery of the display.