Patents by Inventor Teck Ping Sim
Teck Ping Sim has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Publication number: 20240135891Abstract: A method is described for driving an electro-optic display having a plurality of display pixels. The method includes updating the electro-optic display with a first image including image data from a first portion of a scrollable content. The method also includes receiving a user input comprising one or more parameters, and generating a second image based on at least one parameter of the user input. The second image includes: a subset of the image data from the first portion of the scrollable content, and image data from a second portion of the scrollable content. The method also includes updating the electro-optic display with the second image.Type: ApplicationFiled: October 24, 2023Publication date: April 25, 2024Inventors: Teck Ping SIM, Yuval BEN-DOV
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Patent number: 11935495Abstract: Methods are described for driving an electro-optic display having a plurality of display pixels. Each of the display pixels is associated with a display transistor. The method includes the following steps in order. A first voltage is applied to a first display transistor associated with a first display pixel of the plurality of display pixels. The first voltage is applied during at least one frame of a driving waveform. A second voltage is applied to the first display transistor associated with the first display pixel. The second voltage has a non-zero amplitude less than the first voltage and is applied during the last frame of the driving waveform. The amplitude of the second voltage is based on a voltage offset value and a sum of remnant voltages each frame of the driving waveform contributes to the first display pixel when the first voltage is applied to the first display transistor.Type: GrantFiled: August 18, 2022Date of Patent: March 19, 2024Assignee: E Ink CorporationInventors: Aaron Chen, Teck Ping Sim, Kenneth R. Crounse, Karl Raymond Amundson
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Patent number: 11935496Abstract: 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.Type: GrantFiled: May 26, 2023Date of Patent: March 19, 2024Assignee: E Ink CorporationInventors: Teck Ping Sim, Yuval Ben-Dov, Joanna F. Au, Kenneth R. Crounse
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Publication number: 20240087496Abstract: 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.Type: ApplicationFiled: November 15, 2023Publication date: March 14, 2024Inventors: Demetrious Mark HARRINGTON, Kenneth R. CROUNSE, Karl Raymond AMUNDSON, Teck Ping SIM, Matthew J. APREA
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Patent number: 11854456Abstract: 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.Type: GrantFiled: October 28, 2022Date of Patent: December 26, 2023Assignee: E Ink CorporationInventors: Demetrious Mark Harrington, Kenneth R. Crounse, Karl Raymond Amundson, Teck Ping Sim, Matthew J. Aprea
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Patent number: 11854448Abstract: 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.Type: GrantFiled: December 27, 2022Date of Patent: December 26, 2023Assignee: E Ink CorporationInventors: Karl Raymond Amundson, Teck Ping Sim, Michael D. McCreary, Yi Lu, Kosta Ladavac
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Publication number: 20230386422Abstract: 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.Type: ApplicationFiled: May 26, 2023Publication date: November 30, 2023Inventors: Teck Ping SIM, Yuval BEN-DOV, Joanna F. AU, Kenneth R. CROUNSE
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Patent number: 11830448Abstract: The invention provides methods and related apparatuses for driving an electro-optic display having an electrophoretic display medium electrically coupled between a common electrode and a display pixel associated with a display pixel electrode and an n-type transistor electrically coupled to a display controller circuit capable of applying waveforms comprising frames to the display pixel by applying voltages to the common electrode and the display pixel electrode via the n-type transistor. The method includes applying one or more waveforms to the display pixel to drive the electrophoretic display medium in proximity to the display pixel to a first optical state, and discharging a remnant voltage from the electrophoretic display medium utilizing a leakage conduction effect of the n-type transistor. The method can also include maintaining the display pixel in the first optical state for a hold period comprising one or more frames, and placing the display pixel in a floating state.Type: GrantFiled: October 26, 2022Date of Patent: November 28, 2023Assignee: E Ink CorporationInventors: Teck Ping Sim, Chih-Hsiang Ho, Karl Raymond Amundson
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Publication number: 20230343260Abstract: 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.Type: ApplicationFiled: June 30, 2023Publication date: October 26, 2023Inventors: Karl Raymond AMUNDSON, Teck Ping SIM, Michael D. MCCREARY, Yi LU
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Publication number: 20230288772Abstract: An electrophoretic display includes an electrophoretic medium having a non-polar fluid and two sets of charged pigment particles dispersed in the non-polar fluid and movable through the non-polar fluid under influence of an electric field. The two sets of charged pigment particles have different optical characteristics from each other. The display also includes a light-transmissive electrode on one side of the electrophoretic medium, a rear electrode on an opposite side of the electrophoretic medium, and a dielectric layer having a dielectric constant greater than 5 between the electrophoretic medium and the light-transmissive electrode or between the electrophoretic medium and the rear electrode configured to reduce electrode electrochemical degradation and buildup of remnant voltages in the display.Type: ApplicationFiled: April 27, 2023Publication date: September 14, 2023Inventors: Cristina VISANI, Stephen J. TELFER, Kosta LADAVAC, Kenneth R. CROUNSE, Timothy J. O'MALLEY, Teck Ping SIM
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Publication number: 20230258997Abstract: Improved electrophoretic media including a first particle of a first polarity and three particles of the opposite polarity, wherein the first particle and optionally one of the particles of the opposite polarity undergo a diminution of electrophoretic mobility with increased electric field. Such electrophoretic media enable full-color displays with very fast updates between white and black pixels.Type: ApplicationFiled: April 27, 2023Publication date: August 17, 2023Inventors: Stephen J. TELFER, Yuval BEN-DOV, Teck Ping SIM, Sherry Hsin-Yi TSAI
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Patent number: 11721295Abstract: 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.Type: GrantFiled: January 22, 2019Date of Patent: August 8, 2023Assignee: E Ink CorporationInventors: Teck Ping Sim, Yuval Ben-Dov, Joanna F. Au, Kenneth R. Crounse
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Publication number: 20230206796Abstract: 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.Type: ApplicationFiled: December 27, 2022Publication date: June 29, 2023Inventors: Karl Raymond AMUNDSON, Teck Ping SIM, Michael D. MCCREARY, Yi LU, Kosta LADAVAC
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Patent number: 11686989Abstract: Improved electrophoretic media including a first particle of a first polarity and three particles of the opposite polarity, wherein the first particle and optionally one of the particles of the opposite polarity undergo a diminution of electrophoretic mobility with increased electric field. Such electrophoretic media enable full-color displays with very fast updates between white and black pixels.Type: GrantFiled: September 14, 2021Date of Patent: June 27, 2023Assignee: E Ink CorporationInventors: Stephen J. Telfer, Yuval Ben-Dov, Teck Ping Sim, Sherry Hsin-Yi Tsai
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Publication number: 20230197024Abstract: 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.Type: ApplicationFiled: December 21, 2022Publication date: June 22, 2023Inventors: Kenneth R. CROUNSE, Ana L. LATTES, Teck Ping SIM
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Patent number: 11675244Abstract: Layered dielectric materials for use in controlling dielectric strength in microelectronic devices, especially as they relate to electrophoretic and electrowetting applications. Specifically, a combination of a first atomic layer deposition (ALD) step, a sputtering step, and a second ALD step result in a layer that is chemically robust and nearly pinhole free. The dielectric layer may be disposed on the transparent common electrode of an electrophoretic display or covering the pixelated backplane electrodes, or both.Type: GrantFiled: April 30, 2020Date of Patent: June 13, 2023Assignee: E Ink CorporationInventors: Cristina Visani, Stephen J. Telfer, Kosta Ladavac, Kenneth R. Crounse, Timothy J. O'Malley, Teck Ping Sim
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Publication number: 20230177998Abstract: 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.Type: ApplicationFiled: October 28, 2022Publication date: June 8, 2023Inventors: Demetrious Mark HARRINGTON, Kenneth R. CROUNSE, Karl Raymond AMUNDSON, Teck Ping SIM, Matthew J. APREA
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Patent number: 11657774Abstract: 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.Type: GrantFiled: September 19, 2022Date of Patent: May 23, 2023Assignee: E Ink CorporationInventors: Karl Raymond Amundson, Teck Ping Sim
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Publication number: 20230139743Abstract: The invention provides methods and related apparatuses for driving an electro-optic display having an electrophoretic display medium electrically coupled between a common electrode and a display pixel associated with a display pixel electrode and an n-type transistor electrically coupled to a display controller circuit capable of applying waveforms comprising frames to the display pixel by applying voltages to the common electrode and the display pixel electrode via the n-type transistor. The method includes applying one or more waveforms to the display pixel to drive the electrophoretic display medium in proximity to the display pixel to a first optical state, and discharging a remnant voltage from the electrophoretic display medium utilizing a leakage conduction effect of the n-type transistor. The method can also include maintaining the display pixel in the first optical state for a hold period comprising one or more frames, and placing the display pixel in a floating state.Type: ApplicationFiled: October 26, 2022Publication date: May 4, 2023Inventors: Teck Ping SIM, Chih-Hsiang HO, Karl Raymond AMUNDSON
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Publication number: 20230056258Abstract: Methods are described for driving an electro-optic display having a plurality of display pixels. Each of the display pixels is associated with a display transistor. The method includes the following steps in order. A first voltage is applied to a first display transistor associated with a first display pixel of the plurality of display pixels. The first voltage is applied during at least one frame of a driving waveform. A second voltage is applied to the first display transistor associated with the first display pixel. The second voltage has a non-zero amplitude less than the first voltage and is applied during the last frame of the driving waveform.Type: ApplicationFiled: August 18, 2022Publication date: February 23, 2023Inventors: Aaron CHEN, Teck Ping SIM, Kenneth R. CROUNSE, Karl Raymond AMUNDSON