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公开(公告)号：US20230386422A1
公开(公告)日：2023-11-30
申请号：US18324642
申请日：2023-05-26
Applicant: E Ink Corporation
Inventor： Teck Ping SIM , Yuval BEN-DOV , Joanna F. AU , Kenneth R. CROUNSE
IPC: G09G3/34
CPC classification number: G09G3/344 , G09G2320/0257 , G09G2360/18 , G09G2310/061 , G09G2320/0295 , G09G2320/0285 , G09G2340/16
Abstract: A variety of methods for driving electro-optic displays so as to reduce visible artifacts are described. Such methods includes driving an electro-optic display having a plurality of display pixels and controlled by a display controller, the display controller associated with a host for providing operational instructions to the display controller, the method may include updating the display with a first image, updating the display with a second image subsequent to the first image, processing image data associated with the first image and the second image to identify display pixels with edge artifacts and generate image data associated with the identified pixels, storing the image data associated pixels with edge artifacts at a memory location, and initiating a waveform to clear the edge artifacts.
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公开(公告)号：US20210150992A1
公开(公告)日：2021-05-20
申请号：US17097130
申请日：2020-11-13
Applicant: E INK CORPORATION
Inventor： Teck Ping SIM , Yuval BEN-DOV
IPC: G09G3/34
Abstract: Methods for driving electro-optic displays including updating a first portion of the display using a drive scheme, the drive scheme configured to display white text on a black background; performing a time delay subsequent to the updating the first portion of the display; and updating a second portion of the display using the drive scheme to create a swiping motion across the display.
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3.发明申请
公开(公告)号：US20250006146A1
公开(公告)日：2025-01-02
申请号：US18753397
申请日：2024-06-25
Applicant: E INK CORPORATION
Inventor： Teck Ping SIM , Kosta LADAVAC , Yuval BEN-DOV
IPC: G09G3/34
Abstract: Electrophoretic displays with multi-particle electrophoretic media and improved methods for driving such multi-particle electrophoretic media, especially using active matrix backplanes and controllers. Larger look-up tables are used, which include a plurality of time-shifted waveforms for each color transition. The controller can thus easily cause a phase shift in the color flashes across the display, which ultimate diminishes or removes the perception that the device is “flashing” during an update from a first image to a second image. The methods are generalizable to any electrophoretic display using waveforms, and are particularly well-suited for newer multi-particle electrophoretic displays capable of producing four or more colors at each pixel.
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公开(公告)号：US20240312423A1
公开(公告)日：2024-09-19
申请号：US18678514
申请日：2024-05-30
Applicant: E Ink Corporation
Inventor： Teck Ping SIM , Paroma PALCHOUDHURI , Kenneth R. CROUNSE , Yuval BEN-DOV , Karl Raymond AMUNDSON
IPC: G09G3/34 , G02F1/167 , G02F1/1679 , G02F1/1685
CPC classification number: G09G3/344 , G02F1/167 , G02F1/1679 , G02F1/1685
Abstract: Methods are disclosed for driving an electrophoretic display having a plurality of display pixels arranged in a matrix comprising a two-dimensional array of rows and columns of display pixels. The methods include dividing the display pixels into groups made up of a plurality of clusters, where each cluster includes a number of adjacent display pixels. The method includes updating one group of display pixels during a first frame, where display pixels not in the one group are not updated during the first frame, and each cluster in the one group of display pixels is updated at the same time. The methods include applying an edge clearing waveform to no more than eight cardinal pixels of the adjacent display pixels of each cluster.
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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
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.
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公开(公告)号：US20210012721A1
公开(公告)日：2021-01-14
申请号：US17032189
申请日：2020-09-25
Applicant: E INK CORPORATION
Inventor： Pierre-Yves EMELIE , Teck Ping SIM , Kenneth R. CROUNSE , Karl Raymond AMUNDSON , Chih-Hsiang HO
IPC: G09G3/34 , G02F1/1368 , G02F1/16766
Abstract: An electro-optic display having a plurality of display pixels, each of the plurality of display pixels comprising: a pixel electrode for driving the display pixel; a thin film transistor (TFT) coupled to the pixel electrode for transmitting waveforms to the pixel electrode; a resistor coupled to the pixel electrode for discharging remnant charges from the display subsequent to the TFT being de-activated; and a storage capacitor coupled to the pixel electrode and placed in parallel with the resistor. A time constant of a circuit comprising the pixel electrode, the resistor, and the storage capacitor is larger than a driving frame time of the electro-optic display.
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公开(公告)号：US20180350309A1
公开(公告)日：2018-12-06
申请号：US15992363
申请日：2018-05-30
Applicant: E Ink Corporation
Inventor： Pierre-Yves EMELIE , Teck Ping SIM , Kenneth R. CROUNSE , Karl Raymond AMUNDSON , Chih-Hsiang HO
IPC: G09G3/34 , G02F1/167 , G02F1/1368
CPC classification number: G09G3/344 , G02F1/1368 , G02F1/167 , G02F1/1676 , G02F1/16766 , G02F2201/121 , G02F2201/123 , G09G2300/0809 , G09G2300/0819 , G09G2300/0842 , G09G2310/0248 , G09G2310/0251 , G09G2310/06 , G09G2310/068 , G09G2320/0204 , G09G2320/0223 , G09G2320/0242 , G09G2320/0257
Abstract: An electro-optic display having an electrophoretic material configured for displaying images, and an active component coupled to the electrophoretic material for discharging charges within the electrophoretic material.
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公开(公告)号：US20240321177A1
公开(公告)日：2024-09-26
申请号：US18614645
申请日：2024-03-23
Applicant: E INK CORPORATION
Inventor： Kenneth R. CROUNSE , Amit DELIWALA , Stephen J. TELFER , Jonathan L. ZALESKY , Yin AI , Teck Ping SIM
IPC: G09G3/296
CPC classification number: G09G3/296 , G09G2320/0247 , G09G2340/16 , G09G2354/00
Abstract: Methods for driving an electro-optic displays having a plurality of display pixels are described. The method includes determining a level of stress quantity for a display pixel of the electro-optic display based on at least one prior update to the optical state of the display pixel, and receiving a request to update the optical state of the display pixel. The method also includes applying driving waveforms from first or second update schemes to the display pixel depending on the update scheme used for an immediately prior update of the display pixel and comparisons of the level of stress quantity to two level of stress thresholds.
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公开(公告)号：US20240087496A1
公开(公告)日：2024-03-14
申请号：US18510185
申请日：2023-11-15
Applicant: E INK CORPORATION
Inventor： Demetrious Mark HARRINGTON , Kenneth R. CROUNSE , Karl Raymond AMUNDSON , Teck Ping SIM , Matthew J. APREA
CPC classification number: G09G3/2007 , G09G3/344 , G09G2230/00 , G09G2340/16
Abstract: An electro-optic display having a plurality of pixels is driven from a first image to a second image using a first drive scheme, and then from the second image to a third image using a second drive scheme different from the first drive scheme and having at least one impulse differential gray level having an impulse potential different from the corresponding gray level in the first drive scheme. Each pixel which is in an impulse differential gray level in the second image is driven from the second image to the third image using a modified version of the second drive scheme which reduces its impulse differential The subsequent transition from the third image to a fourth image is also conducted using the modified second drive scheme but after a limited number of transitions using the modified second drive scheme, all subsequent transitions are conducted using the unmodified second drive scheme.
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公开(公告)号：US20230197024A1
公开(公告)日：2023-06-22
申请号：US18069354
申请日：2022-12-21
Applicant: E INK CORPORATION
Inventor： Kenneth R. CROUNSE , Ana L. LATTES , Teck Ping SIM
IPC: G09G3/34 , G02F1/167 , G02F1/16766 , G02F1/1685
CPC classification number: G09G3/344 , G02F1/167 , G02F1/16766 , G02F1/1685 , G02F2201/121 , G09G2310/0202 , G09G2310/0254 , G09G2310/08 , G09G2320/0257 , G09G2320/0247
Abstract: A method of driving an electro-optic display including a layer of electro-optic material disposed between a common electrode and a backplane including an array of pixel electrodes, each coupled to a transistor including a source, gate, and drain electrode. The gate electrode is coupled to a gate line, the source electrode is coupled to a scan line, and the drain electrode is coupled to the pixel electrode. A controller provides time-dependent voltages to the gate, scan, and common electrodes, including a common electrode that is the maximum voltage the controller is capable of applying, and a scan line voltage to every pixel that is the maximum voltage the controller is capable of applying. A gate voltage sufficient to activate the pixel transistor to the gate of every pixel transistor is applied, thereby applying voltage potential across the electro-optic material.
