Patents Assigned to E INK
  • Publication number: 20250149004
    Abstract: A display device and an operating method for the display device are provided. The display device includes a pixel array, a multiplexer circuit, and a holding circuit. The pixel array includes a first pixel column and a second pixel column. The multiplexer circuit provides a first data signal to the first pixel column during a first period and provides a second data signal to the second pixel column during a second period. The holding circuit provides a reference signal to the second pixel column during the first period to maintain a display result of the second pixel column during a previous period and provides the reference signal to the first pixel column during the second period to maintain a display result of the first pixel column during the first period.
    Type: Application
    Filed: August 28, 2024
    Publication date: May 8, 2025
    Applicant: E Ink Holdings Inc.
    Inventors: Chi-Liang Wu, Wei-Tsung Chen
  • Publication number: 20250147219
    Abstract: A front light module configured to be disposed on a display panel to illuminate the display panel is provided. The front light module includes a light source and a light guide plate. The light guide plate has a first surface facing away from the display panel, a second surface facing the display panel, and a light incident surface facing the light source. The light incident surface connects the first surface and the second surface. The first surface has multiple sets of optical micro-structures. Each of the sets of the optical micro-structures includes multiple optical micro-structures disposed or distributed asymmetrically.
    Type: Application
    Filed: October 9, 2024
    Publication date: May 8, 2025
    Applicant: E Ink Holdings Inc.
    Inventors: Chia Feng Ho, Jen-Yuan Chi, Yu-Nan Pao, Yen-Hao Chen, Yu-Chuan Wen, Hsin-Tao Huang
  • Patent number: 12282635
    Abstract: A touch display device includes a substrate, a display element layer, a composite substrate, a touch electrode and an adhesive layer. The display element layer is disposed on the substrate. The composite substrate includes a support layer and a moisture barrier layer. The moisture barrier layer is in direct contact with and covers a surface of the support layer. The display element layer is located between the substrate and the composite substrate. A moisture transmission rate of the moisture barrier layer is less than 1×10?2 g/m2/day. The touch electrode is disposed on the composite substrate. The adhesive layer is disposed between the display element layer and the composite substrate.
    Type: Grant
    Filed: November 29, 2023
    Date of Patent: April 22, 2025
    Assignee: E Ink Holdings Inc.
    Inventors: Chen Cheng Lin, Hung Wei Tseng, Yi Chun Kuo, Fang Chia Hu
  • Patent number: 12283215
    Abstract: A display device including a display panel and a driving circuit is provided. The display panel is configured to display an image frame. The driving circuit is coupled to the display panel. The driving circuit is configured to output a gate signal to drive the display panel to display the image frame during a driving period. The driving period includes a first period, a second period, and a third period. The gate signal has a first voltage level during the first period and a second voltage level during the second period. The second voltage level is greater than the first voltage level.
    Type: Grant
    Filed: February 19, 2024
    Date of Patent: April 22, 2025
    Assignee: E Ink Holdings Inc.
    Inventors: Wen-Chuan Wang, Ian French, Kuang-Heng Liang, Chih-Ching Wang
  • Patent number: 12282630
    Abstract: The invention provides a touch display device and an operation method for the touch display device. The touch display device includes an integrated control circuit and a touch driver. The integrated control circuit is coupled to the touch driver. The integrated control circuit outputs a first synchronization signal to the touch driver. The touch driver outputs a touch mode signal to the integrated control circuit, so that the integrated control circuit generates a synchronization enabling signal to the touch driver according to the touch mode signal.
    Type: Grant
    Filed: December 21, 2023
    Date of Patent: April 22, 2025
    Assignee: E Ink Holdings Inc.
    Inventors: Hung Wei Tseng, Yi Chun Kuo, Chen Cheng Lin
  • Patent number: 12276817
    Abstract: A display device includes a display area, a pixel array, a display medium layer, and a color filter layer. The display area includes a plurality of sub-pixel regions, and each of the sub-pixel regions has a length and a width that are substantially the same. The pixel array corresponds to the display area in position. The display medium layer is located on the pixel array. The color filter layer includes a plurality of color resists. The color resists are arranged along a first direction and a second direction different from the first direction. Two adjacent color resists arranged along the first direction have different colors, two adjacent color resists arranged along the second direction have different colors, and adjacent two of the color resists are spaced apart from each other.
    Type: Grant
    Filed: January 12, 2021
    Date of Patent: April 15, 2025
    Assignee: E Ink Holdings Inc.
    Inventors: Ian French, Po-Yuan Lo, Xian-Teng Chung
  • Patent number: 12276894
    Abstract: The present invention is directed to a sealing layer that comprises a poly(vinyl alcohol) homopolymer or a poly(vinyl alcohol-co-ethylene) copolymer, a polyurethane, and a conductive filler. The sealing layer shows good barrier properties to a non-polar fluid. The sealing layer can be used to seal microcells of electro-optic devices, contributing to improved good electro-optic performance of the device, especially at low temperatures.
    Type: Grant
    Filed: February 2, 2022
    Date of Patent: April 15, 2025
    Assignee: E Ink Corporation
    Inventors: Ali Sarvi, Abraham Berhane, Mary E. Parent, Kenneth R. Crounse, Stephen J. Telfer
  • Patent number: 12272324
    Abstract: Waveforms for driving an electrophoretic display including a color filter between a viewer and the electrophoretic medium. Because the waveform results in each image update visiting the white state before the final state, the overall gamut is larger in aggregate and more predictable than simply driving the electrophoretic display including a color filter with the waveforms that are used for black and white grayscale displays.
    Type: Grant
    Filed: February 26, 2024
    Date of Patent: April 8, 2025
    Assignee: E Ink Corporation
    Inventor: Sarah Paydavosi
  • Publication number: 20250111833
    Abstract: A display and a driving method thereof are disclosed. The display includes a plurality of pixel circuits. Each of the pixel circuits includes a display unit, a first scanning transistor, an equivalent boosting capacitor, a second scanning transistor, a third scanning transistor, and a storage capacitor. The display unit receives a first reference constant voltage and is coupled to a first node. The first scanning transistor is coupled to the first node and receives a first scanning signal. The equivalent boosting capacitor is coupled between the first node and a second node. The second scanning transistor is coupled to the second node and receives a second scanning signal. The third scanning transistor is coupled to the second node and receives the first scanning signal. The capacitor is coupled between a first terminal and a second terminal of the third scanning transistor.
    Type: Application
    Filed: December 13, 2024
    Publication date: April 3, 2025
    Applicant: E Ink Holdings Inc.
    Inventors: Wen-Yu Kuo, Kuang-Heng Liang
  • Publication number: 20250102723
    Abstract: A display includes a light guide plate, a first optical adhesive, a light source element, and a display panel. The light guide plate includes a light guide substrate and an enhancement layer disposed on the light guide substrate. At least a portion of the enhancement layer is interposed between a first surface of the light guide substrate and the first optical adhesive. A difference between the refractive index n1 of the light guide substrate and the refractive index n2 of the at least a portion of the enhancement layer is ?n1. ?n1=n1?n2. A difference between the refractive index n3 of the first optical adhesive and the refractive index n2 of the at least a portion of the enhancement layer is ?n2. ?n2=n3?n2, ?n1?0, ?n2?0, and ?n1??n2.
    Type: Application
    Filed: December 9, 2024
    Publication date: March 27, 2025
    Applicant: E Ink Holdings Inc.
    Inventors: Hsin-Tao Huang, Yu-Chuan Wen, Jen-Pin Yu, Ya-Chin Chang, Ching-Huan Liao
  • Publication number: 20250107287
    Abstract: A color reflective display panel including a reflective display panel and a color filter array is provided. The color filter array is disposed on the reflective display panel. The color filter array includes a plurality of pixel units. Each pixel unit includes one or more first pixels having a first color, one or more second pixels having a second color, and one or more third pixels having a third color. The ratio of the area of the third pixels to the area of the pixel unit is less than one-third.
    Type: Application
    Filed: June 24, 2024
    Publication date: March 27, 2025
    Applicant: E Ink Holdings Inc.
    Inventors: Jau-Min Ding, Po-Yuan Lo, Ian French
  • Patent number: 12259629
    Abstract: 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: Grant
    Filed: April 27, 2023
    Date of Patent: March 25, 2025
    Assignee: E Ink Corporation
    Inventors: Cristina Visani, Stephen J. Telfer, Kosta Ladavac, Kenneth R. Crounse, Timothy J. O'Malley, Teck Ping Sim
  • Publication number: 20250095596
    Abstract: A display device including an element array substrate, an electrophoretic display substrate and a humidity sensor is provided. The electrophoretic display substrate is disposed on the element array substrate. The humidity sensor includes a conductive pattern disposed on a side of the element array substrate adjacent to the electrophoretic display substrate. A driving method of the display device is also provided.
    Type: Application
    Filed: August 5, 2024
    Publication date: March 20, 2025
    Applicant: E Ink Holdings Inc.
    Inventors: Hsien-Kai Tseng, Wei-Chen Tsai, Sheng-Wei Chen, Chi-Mao Hung
  • Publication number: 20250093989
    Abstract: Provided is an inspection tool for a touch panel, including a substrate adapted to be placed on the touch panel and multiple protrusions disposed on the substrate in correspondence to multiple touch inspection points and arranged along an inspection trajectory. An inspection method for a touch panel is also provided.
    Type: Application
    Filed: November 27, 2024
    Publication date: March 20, 2025
    Applicant: E Ink Holdings Inc.
    Inventors: Chien-Hsing Chang, Ying-Ta Chen, Yun-Nan Hsieh
  • Patent number: 12253784
    Abstract: A driving method for driving a display comprising an electrophoretic material having at least one type of colored pigment particle, the method includes applying at least one pulse pair to reset the at least one type of colored pigment particle, applying a separation pulse, and applying a second pulse pair to reset the at least one type of colored pigment particle.
    Type: Grant
    Filed: September 12, 2023
    Date of Patent: March 18, 2025
    Assignee: E Ink Corporation
    Inventor: Craig Lin
  • Publication number: 20250087174
    Abstract: A gate driver circuit including seven transistors and two capacitors is provided. A first end of a third transistor is coupled to a first pulse signal, a second end of the third transistor outputs a gate signal, and a control end of the third transistor is coupled to a first end of a second transistor. A first end of a fourth transistor is coupled to the second end of the third transistor, a second end of the fourth transistor is coupled to a first voltage, and a control end of the fourth transistor is coupled to a control end of the second transistor. A first end of a fifth transistor is coupled to a second voltage, a second end of the fifth transistor is coupled to the control end of the fourth transistor, and a control end of the fifth transistor is coupled to a second pulse signal.
    Type: Application
    Filed: May 23, 2024
    Publication date: March 13, 2025
    Applicant: E Ink Holdings Inc.
    Inventors: Pei-Lin Huang, Chia-Hsien Wu, Jia-Hung Chen, An-Chi Liu
  • Patent number: 12249290
    Abstract: There are provided display controllers and driving methods related to those described in US Published Patent Application No. 2013/0194250.
    Type: Grant
    Filed: November 27, 2023
    Date of Patent: March 11, 2025
    Assignee: E Ink Corporation
    Inventors: Pierre-Yves Emelie, Kenneth R. Crounse, Karl Raymond Amundson
  • Patent number: 12249291
    Abstract: Methods for driving color electrophoretic displays including a plurality of display pixels capable of producing a set of primary colors. The method comprises defining a separation cumulate threshold array and using the separation cumulate threshold array to identify areas of the electrophoretic display that are better suited for dithering and not dithering the areas of the electrophoretic display that exceed the separation cumulate threshold.
    Type: Grant
    Filed: November 27, 2023
    Date of Patent: March 11, 2025
    Assignee: E Ink Corporation
    Inventor: Kenneth R. Crounse
  • Patent number: 12250892
    Abstract: Provided herein is a phase change material for use in a display device. Also provided is a display device comprising a phase change material; the use of a phase change material as an optical absorber in a display device; a method of fabricating a pixel; and a method of fabricating a display device. The phase change material is as described in more detail herein.
    Type: Grant
    Filed: May 30, 2024
    Date of Patent: March 11, 2025
    Assignee: E Ink Corporation
    Inventors: Peiman Hosseini, Clement Talagrand, Graham Triggs, Christopher Wright, Noboru Yamada
  • Patent number: 12249262
    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.
    Type: Grant
    Filed: June 30, 2023
    Date of Patent: March 11, 2025
    Assignee: E Ink Corporation
    Inventors: Karl Raymond Amundson, Teck Ping Sim, Michael D. McCreary, Yi Lu