Patents by Inventor Chi-Mao Hung

Chi-Mao Hung 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).

  • Publication number: 20200142520
    Abstract: A touch sensor configured to sense a touch object is provided. The touch sensor includes a sensing device and a sensing circuit. The sensing device includes a substrate, a sensing electrode, a sensing common electrode and a shielding layer. The sensing electrode and the sensing common electrode are disposed on the substrate. The shielding layer is disposed on the sensing electrode and the sensing common electrode. The sensing circuit is electrically connected to the sensing device. The sensing circuit includes a resistor device. A relaxation frequency of a relaxation signal of the touch sensor is determined according to a resistance of the resistor device and/or a parasitic resistance of the sensing device. A pulse difference of the relaxation signal is changed by the touch object. The touch object is a conductor. An electronic paper display panel including the foregoing touch sensor is also provided.
    Type: Application
    Filed: January 9, 2020
    Publication date: May 7, 2020
    Applicant: E Ink Holdings Inc.
    Inventors: Hsiao-Lung Cheng, Shu-Fen Tsai, Chi-Mao Hung, Kuang-Heng Liang
  • Patent number: 10642398
    Abstract: A driver apparatus configured to drive an electronic paper display panel to perform a touch sensing operation is provided. The driver apparatus includes a scanner apparatus and a sensing apparatus. The scanner apparatus scans multiple sensing blocks of the electronic paper display panel to perform the touch sensing operation. Each sensing block includes one or more sensing devices. The sensing blocks are arranged in an array. The sensing apparatus is electrically connected to the scanner apparatus. The sensing apparatus controls the scanner apparatus to scan the sensing blocks. The sensing apparatus charges/discharges each sensing block according to a first voltage and a second voltage, so that a relaxation signal is generated. A pulse difference of the relaxation signal is changed by the touch object. The touch object is a conductor. A touch position of the touch object on the electronic paper display panel is determined according to a relaxation frequency of the relaxation signal of each sensing block.
    Type: Grant
    Filed: March 29, 2019
    Date of Patent: May 5, 2020
    Assignee: E Ink Holdings Inc.
    Inventors: Hsiao-Lung Cheng, Chi-Mao Hung
  • Patent number: 10593275
    Abstract: An electronic paper display including a display apparatus of a first type, a driver circuit of the first type electrically coupled to the display apparatus of the first type, a display film of a second type disposed on the display apparatus of the first type and a timing controller circuit of the second type electrically coupled to the driver circuit of the first type is provided. The driver circuit of the first type drives the display apparatus of the first type and displays images on the display film of the second type according to a driving signal of the first type. The timing controller circuit of the second type adjusts a waveform of driving signal of the second type to a waveform of the driving signal of the first type. The first type is a liquid crystal display type, and the second type is an electronic paper display type.
    Type: Grant
    Filed: October 27, 2017
    Date of Patent: March 17, 2020
    Assignee: E Ink Holdings Inc.
    Inventors: Shu-Cheng Liu, Pei-Lin Tien, Chi-Mao Hung
  • Publication number: 20200074942
    Abstract: A display device and a display driving method are provided. The display device includes a display panel and a timing controller. A timing controller is configured to drive the display panel. A memory is configured to store previous image data. The timing controller sequentially receives a plurality of current image data during an image update period, and compares the plurality of current image data to the previous image data to sequentially generate a plurality of driving signals. The timing controller sequentially outputs the plurality of driving signals to the display panel during the screen update period to update a display screen of the display panel.
    Type: Application
    Filed: August 29, 2019
    Publication date: March 5, 2020
    Applicant: E Ink Holdings Inc.
    Inventors: Shu-Cheng Liu, Hsiao-Lung Cheng, Pei-Lin Tien, Chi-Mao Hung
  • Patent number: 10545389
    Abstract: An electrophoretic display panel including a first electrode layer, a second electrode layer, an electrophoretic display layer and a low surface energy coating layer is provided. The first electrode layer has a first surface and a second surface corresponding to the first surface. The electrophoretic display layer is disposed between the first electrode layer and the second electrode layer. The electrophoretic display layer has a third surface. The third surface of the electrophoretic display layer and the second surface of the first electrode layer have a gap therebetween. A gap distance of the gap is changed with a press operation. The low surface energy coating layer is coated on at least one of the second surface of the first electrode layer and the third surface of the electrophoretic display layer.
    Type: Grant
    Filed: December 5, 2017
    Date of Patent: January 28, 2020
    Assignee: E Ink Holdings Inc.
    Inventors: Hsiao-Lung Cheng, Pin-Cheng Chiu, Ya-Mei Wang, Chi-Mao Hung
  • Patent number: 10488692
    Abstract: A touch display device including a driving substrate, a display module, a touch electrode layer and an insulating layer is provided. The driving substrate has a display area and a non-display area located outside the display area. The display module includes a display medium layer, a transparent conductive layer and a transparent cover plate sequentially arranged on the driving substrate and located in the display area. The touch electrode layer is disposed in the non-display area of the driving substrate or outside the driving substrate. The insulating layer covers an upper surface of the display module and extendedly covers a top surface of the touch electrode layer along a side edge of the display module.
    Type: Grant
    Filed: June 13, 2017
    Date of Patent: November 26, 2019
    Assignee: E Ink Holdings Inc.
    Inventors: Hsiao-Lung Cheng, Chi-Mao Hung
  • Publication number: 20190354212
    Abstract: A touch sensor configured to sense a touch object is provided. The touch sensor includes a sensing device and a sensing circuit. The sensing device includes a substrate, a sensing electrode, a sensing common electrode and a shielding layer. The sensing electrode and the sensing common electrode are disposed on the substrate. The shielding layer is disposed on the sensing electrode and the sensing common electrode. The sensing circuit is electrically connected to the sensing device. The sensing circuit includes a resistor device. A relaxation frequency of a relaxation signal of the touch sensor is determined according to a resistance of the resistor device and/or a parasitic resistance of the sensing device. A pulse difference of the relaxation signal is changed by the touch object. The touch object is a conductor. An electronic paper display panel and an electronic paper display apparatus including the foregoing touch sensor are also provided.
    Type: Application
    Filed: March 29, 2019
    Publication date: November 21, 2019
    Applicant: E Ink Holdings Inc.
    Inventors: Hsiao-Lung Cheng, Shu-Fen Tsai, Chi-Mao Hung, Kuang-Heng Liang
  • Publication number: 20190354217
    Abstract: A driver apparatus configured to drive an electronic paper display panel to perform a touch sensing operation is provided. The driver apparatus includes a scanner apparatus and a sensing apparatus. The scanner apparatus scans multiple sensing blocks of the electronic paper display panel to perform the touch sensing operation. Each sensing block includes one or more sensing devices. The sensing blocks are arranged in an array. The sensing apparatus is electrically connected to the scanner apparatus. The sensing apparatus controls the scanner apparatus to scan the sensing blocks. The sensing apparatus charges/discharges each sensing block according to a first voltage and a second voltage, so that a relaxation signal is generated. A pulse difference of the relaxation signal is changed by the touch object. The touch object is a conductor. A touch position of the touch object on the electronic paper display panel is determined according to a relaxation frequency of the relaxation signal of each sensing block.
    Type: Application
    Filed: March 29, 2019
    Publication date: November 21, 2019
    Applicant: E Ink Holdings Inc.
    Inventors: Hsiao-Lung Cheng, Chi-Mao Hung
  • Patent number: 10431167
    Abstract: An electronic paper display apparatus, a signal transmission system and a method thereof are provided. The electronic paper display apparatus is configured to transmit an encrypted signal. The electronic paper display apparatus includes an electronic paper display panel and a display driver. The electronic paper display panel is configured to display a first image or a second image. The display driver is electrically coupled to the electronic paper display panel and configured to output a driving signal to the electronic paper display panel. The display driver drives the electronic paper display panel to alternately display the first image and the second image for transmitting the encrypted signal by using the driving signal during a signal transmission period.
    Type: Grant
    Filed: September 18, 2015
    Date of Patent: October 1, 2019
    Assignee: E Ink Holdings Inc.
    Inventors: Chuen-Jen Liu, Li-Wei Chou, Jia-Hong Xu, Yu-Ming Lee, Chih-Jen Wu, Chi-Mao Hung
  • Patent number: 10380953
    Abstract: An electrophoretic display and method for driving panel using the same are provided. The electrophoretic display includes a display panel and a driving circuit. The display panel includes a plurality of column data lines and a plurality of row scan lines. The driving circuit provides a plurality of data driving signals to the column data lines, and provides a plurality of scan signals to row scan lines. Each of the scan signals has a plurality of scan enable periods, and each of the scan enable periods includes a plurality of scan interval periods. Each of the scan signals is floating or grounding during the scan interval periods. Each of the data driving signals includes a plurality of data driving periods, and each of the data driving periods includes a plurality of driving interval period. Each of the data driving signals is floating or grounding during the driving interval period.
    Type: Grant
    Filed: January 24, 2014
    Date of Patent: August 13, 2019
    Assignee: E Ink Holdings Inc.
    Inventors: Yan-Liang Wu, Chi-Mao Hung, Wei-Min Sun, Pei-Lin Tien, Chih-Yuan Hsu, Yao-Jen Hsieh, Hsiao-Lung Cheng
  • Publication number: 20190197871
    Abstract: A smart medication device including a non-electrical component and an electrical component is provided. The non-electrical component includes a containing structure configured to contain one or more medicines. The electrical component is disposed on the non-electrical component. The electrical component includes a triggering structure and an e-paper display apparatus. The triggering structure is configured to generate a triggering signal to trigger the e-paper display apparatus to display medicine administration information. The triggering structure is deformed by receiving an external force to generate the triggering signal. An electrical characteristic of the triggering signal is determined by a structure characteristic of the triggering structure.
    Type: Application
    Filed: February 27, 2019
    Publication date: June 27, 2019
    Applicant: SiPix Technology Inc.
    Inventors: Yen-Hsing Lu, Chi-Mao Hung, Chung-Hui Lee
  • Publication number: 20190179209
    Abstract: The present invention provides driving methods for electrophoretic color display devices. The backplane system used for the driving methods is found to be simpler which renders color display devices more cost effective. More specifically, the driving method comprises first driving all pixels towards a color state by modulating only the common electrode, followed by driving all pixels towards their desired color states by maintaining the common electrode grounded and applying different voltages to the pixel electrodes.
    Type: Application
    Filed: February 20, 2019
    Publication date: June 13, 2019
    Inventors: Craig Lin, Chi-Mao Hung
  • Patent number: 10254619
    Abstract: The present invention provides driving methods for electrophoretic color display devices. The backplane system used for the driving methods is found to be simpler which renders color display devices more cost effective. More specifically, the driving method comprises first driving all pixels towards a color state by modulating only the common electrode, followed by driving all pixels towards their desired color states by maintaining the common electrode grounded and applying different voltages to the pixel electrodes.
    Type: Grant
    Filed: October 17, 2016
    Date of Patent: April 9, 2019
    Assignee: E INK CALIFORNIA, LLC
    Inventors: Craig Lin, Chi-Mao Hung
  • Patent number: 10229641
    Abstract: A driving method of an electrophoretic display having at least one display particle is provided. The driving method includes the following steps. A first voltage difference is applied to a data line in a first period, in which the data line corresponds to one of the display particles. At least one particle restore period is inserted in the first period, and a second voltage difference is applied to the data line in the particle restore periods, in which the second voltage difference is different from the first voltage difference. With this method disclosed here, the maxima brightness, maxima darkness, contrast ratio, color saturation, bistability, and image updating time can be largely improved.
    Type: Grant
    Filed: December 3, 2015
    Date of Patent: March 12, 2019
    Assignee: E Ink Holdings Inc.
    Inventors: Bo-Ru Yang, Ping-Yueh Cheng, Chi-Mao Hung, Chun-An Wei, Yao-Jen Hsieh
  • Patent number: 10068513
    Abstract: An electronic paper apparatus including a communication module and a control module is provided. The communication module receives an electrical signal and generates a power voltage according to the electric signal. The communication module wakes up a controller during a first period of a work period by using the power voltage. The control module is electrically connected to the communication module, and includes the controller and an electronic paper display. The control module establishes a communication connection with the communication module during a second period of the work period. The power circuit module generates a driving voltage according to the power voltage to drive the electronic paper display to display image information according to the driving voltage during a display period. The first period and the second period are two continuous time intervals forming the work period. Furthermore, a driving method of the electronic paper apparatus is also provided.
    Type: Grant
    Filed: July 26, 2015
    Date of Patent: September 4, 2018
    Assignee: E Ink Holdings Inc.
    Inventors: Chuen-Jen Liu, Li-Wei Chou, Jia-Hong Xu, Yu-Ming Lee, Chi-Mao Hung
  • Publication number: 20180182332
    Abstract: An electronic paper display including a display apparatus of a first type, a driver circuit of the first type electrically coupled to the display apparatus of the first type, a display film of a second type disposed on the display apparatus of the first type and a timing controller circuit of the second type electrically coupled to the driver circuit of the first type is provided. The driver circuit of the first type drives the display apparatus of the first type and displays images on the display film of the second type according to a driving signal of the first type. The timing controller circuit of the second type adjusts a waveform of driving signal of the second type to a waveform of the driving signal of the first type. The first type is a liquid crystal display type, and the second type is an electronic paper display type.
    Type: Application
    Filed: October 27, 2017
    Publication date: June 28, 2018
    Applicant: E Ink Holdings Inc.
    Inventors: Shu-Cheng Liu, Pei-Lin Tien, Chi-Mao Hung
  • Patent number: 9997115
    Abstract: An electrophoretic display apparatus and an image processing method thereof are provided. The electrophoretic display apparatus includes a display panel and a display driver. The display driver is configured to determine whether a plurality of pixel data of an image signal needs to being recoded according to one or more judgment conditions. If so, the pixel data is recoded. The display driver drives the display panel by using a plurality of driving signals having different signal waveforms, so that the display panel displays an image frame according to pixel data without being recoded and the recoded pixel data.
    Type: Grant
    Filed: July 30, 2015
    Date of Patent: June 12, 2018
    Assignee: E Ink Holdings Inc.
    Inventors: Shu-Cheng Liu, Pei-Lin Tien, Chi-Mao Hung
  • Publication number: 20180157143
    Abstract: An electrophoretic display panel including a first electrode layer, a second electrode layer, an electrophoretic display layer and a low surface energy coating layer is provided. The first electrode layer has a first surface and a second surface corresponding to the first surface. The electrophoretic display layer is disposed between the first electrode layer and the second electrode layer. The electrophoretic display layer has a third surface. The third surface of the electrophoretic display layer and the second surface of the first electrode layer have a gap therebetween. A gap distance of the gap is changed with a press operation. The low surface energy coating layer is coated on at least one of the second surface of the first electrode layer and the third surface of the electrophoretic display layer.
    Type: Application
    Filed: December 5, 2017
    Publication date: June 7, 2018
    Applicant: E Ink Holdings Inc.
    Inventors: Hsiao-Lung Cheng, Pin-Cheng Chiu, Ya-Mei Wang, Chi-Mao Hung
  • Publication number: 20180158392
    Abstract: A timing controller circuit of an electronic paper display apparatus including an image processing circuit and a timing controller is provided. The image processing circuit receives an image signal and analyzes the image signal according to a signal component of the image signal, so as to determine a display mode of the electronic paper display apparatus. The image processing circuit selects a driving signal waveform according to the determined display mode. The timing controller is electrically connected to the image processing circuit. The timing controller outputs the selected driving signal waveform to drive an electronic paper display panel of the electronic paper display apparatus to display image frames.
    Type: Application
    Filed: September 12, 2017
    Publication date: June 7, 2018
    Applicant: E Ink Holdings Inc.
    Inventors: Shu-Cheng Liu, Pei-Lin Tien, Chi-Mao Hung
  • Patent number: 9978298
    Abstract: A display panel including a plurality of digital code display units is provided. The digital code display units respectively display digital codes. Each of the digital code display units includes a plurality of display segments. The display segments are at least grouped into a first group and a second group. A signal waveform of at least one of a plurality of common voltage signals that drive the first group is the same as a signal waveform of at least one of a plurality of common voltage signals that drive the second group. Furthermore, a driving method of the display panel is also provided.
    Type: Grant
    Filed: July 30, 2015
    Date of Patent: May 22, 2018
    Assignee: E Ink Holdings Inc.
    Inventors: Wei-Hsuan Tsai, Shao-Wei Su, Chih-Jen Wu, Chi-Mao Hung