Patents by Inventor Yajuan Chen

Yajuan Chen 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: 20250151590
    Abstract: A display panel and a display device are disclosed. The display panel includes a substrate, a light-emitting element layer, a pixel defining layer, an encapsulation layer, a refraction layer, and a color filter layer. The refraction layer is arranged on the encapsulation layer to refract light entering the refraction layer. The color filter layer is arranged on the refraction layer, and includes a black matrix disposed in a non-opening area and multiple color filters disposed in a non-opening area. Every two adjacent color filters are separated by the black matrix. The refraction layer includes multiple refraction portions. Each refraction portion is arranged under the black matrix, is located in the non-opening area, and extends toward the opening area. The refraction portions are each used to refract the external ambient light and receive the reflected light reflected by the light-emitting element and refract the reflected light to the black matrix.
    Type: Application
    Filed: October 30, 2024
    Publication date: May 8, 2025
    Inventors: WENYU YI, Tianjun Huang, Zhonglin Cao, Chuan Wu, Yajuan Feng, Yao Li, Dongmei Wei, Jie Chen, Haijiang Yuan
  • Publication number: 20250138379
    Abstract: A display panel, a display device, and an electronic device are disclosed. The display panel includes a flexible substrate, a plurality of pixel islands, an electrochromic layer, and a plurality of force sensors. In response to a stretching length of a corresponding one of a plurality of flexible connection lines being greater than a preset value, each of the plurality of force sensors is configured to enable the electrochromic layer to be switched to a transparent state to allow light emitted from the display panel to pass therethrough. In response to the stretching length of the corresponding one of the plurality of flexible connection lines being less than the preset value, each of the plurality of force sensors is configured to enable the electrochromic layer to be switched to an opaque state to block the light emitted from the display panel.
    Type: Application
    Filed: October 30, 2024
    Publication date: May 1, 2025
    Applicant: HKC CORPORATION LIMITED
    Inventors: Wenyu YI, Chuan WU, Zhonglin CAO, Yajuan FENG, Dongmei WEI, Jie CHEN, Yao LI, Junfeng XIE
  • Patent number: 12271554
    Abstract: Disclosed are a touch circuit and driving method, and a touch display panel, the touch circuit includes a plurality of touch units, each touch unit includes a touch signal line, one or more data lines corresponding to the touch signal line, a data signal line connected to the data lines, transmitting a data signal to the data lines, a common signal line connected to the touch electrode; each touch unit includes a first transistor, a control terminal of the first transistor is connected to a first control signal line, a first conducting terminal is connected to the data lines or the data signal line, a second conducting terminal is connected to the touch signal line; though the aforesaid structure, reusing of the data signal line, reducing of the number of wires in the fanout wiring area, an effect of narrow bezel in the lower bezel can be realized.
    Type: Grant
    Filed: April 9, 2024
    Date of Patent: April 8, 2025
    Assignee: HKC CORPORATION LIMITED
    Inventors: Dongmei Wei, Zhonglin Cao, Jie Chen, Yajuan Feng, Yao Li, Haijiang Yuan
  • Patent number: 12222641
    Abstract: The present disclosure provides a method for optimizing mask parameters, and the method includes: acquiring a test pattern, light source parameters, and initial mask parameters, the initial mask parameters including a mask thickness and an initial mask sidewall angle; generating multiple sets of candidate mask parameters according to the initial mask sidewall angle in the initial mask parameters; the multiple sets of candidate mask parameters including different mask sidewall angles and the same mask thickness; obtaining an imaging contrast of each set of candidate mask parameters based on the test pattern and the light source parameters; and selecting an optimal mask sidewall angle from the multiple sets of candidate mask parameters according to the imaging contrasts.
    Type: Grant
    Filed: November 8, 2021
    Date of Patent: February 11, 2025
    Assignee: INSTITUTE OF MICROELECTRONICS, CHINESE ACADEMY OF SCIENCES
    Inventors: Jianfang He, Yayi Wei, Yajuan Su, Lisong Dong, Libin Zhang, Rui Chen, Le Ma
  • Patent number: 12212396
    Abstract: The present disclosure discloses a beam indication method, a beam indication device, a terminal and a network side device. The method is applied to a first terminal and includes: receiving, by the first terminal, a first message, wherein the first message includes beam-related information for indicating N beams, N is an integer greater than or equal to 1; transmitting, by the first terminal, at least two target channels and/or target reference signals according to the beam-related information.
    Type: Grant
    Filed: July 1, 2021
    Date of Patent: January 28, 2025
    Assignee: Datang Mobile Communications Equipment Co., Ltd.
    Inventors: Hui Li, Runhua Chen, Qiubin Gao, Yajuan Luo
  • Patent number: 11735127
    Abstract: A driving method for driving an electrophoretic display comprising four types of particles, the first type of particles and the third type of particles are positively charged, and the second type of particles and the fourth type of particles are negatively charged, the method comprises the steps of: (i). applying a first driving voltage to the pixel of the electrophoretic display for a first period of time at a first amplitude to drive the pixel to a color state of the fourth type of particle at the viewing side; and (ii). applying a second driving voltage to the pixel of the electrophoretic display for a second period of time, opposite to that of the first driving voltage and a second amplitude smaller than that of the first amplitude, to drive the second type particle towards the non-viewing side.
    Type: Grant
    Filed: March 25, 2022
    Date of Patent: August 22, 2023
    Assignee: E INK CALIFORNIA, LLC
    Inventors: Shang-Chia Chen, Yajuan Chen, Craig Lin
  • Publication number: 20220215807
    Abstract: A driving method for driving an electrophoretic display comprising four types of particles, the first type of particles and the third type of particles are positively charged, and the second type of particles and the fourth type of particles are negatively charged, the method comprises the steps of: (i). applying a first driving voltage to the pixel of the electrophoretic display for a first period of time at a first amplitude to drive the pixel to a color state of the fourth type of particle at the viewing side; and (ii). applying a second driving voltage to the pixel of the electrophoretic display for a second period of time, opposite to that of the first driving voltage and a second amplitude smaller than that of the first amplitude, to drive the second type particle towards the non-viewing side.
    Type: Application
    Filed: March 25, 2022
    Publication date: July 7, 2022
    Inventors: Shang-Chia CHEN, Yajuan CHEN, Craig LIN
  • Patent number: 11380274
    Abstract: A driving method for driving an electrophoretic display comprising four types of particles, the first type of particles and the third type of particles are positively charged, and the second type of particles and the fourth type of particles are negatively charged, the method comprises the steps of: (i). applying a first driving voltage to the pixel of the electrophoretic display for a first period of time at a first amplitude to drive the pixel to a color state of the fourth type of particle at the viewing side; and (ii). applying a second driving voltage to the pixel of the electrophoretic display for a second period of time, opposite to that of the first driving voltage and a second amplitude smaller than that of the first amplitude, to drive the second type particle towards the non-viewing side.
    Type: Grant
    Filed: April 29, 2021
    Date of Patent: July 5, 2022
    Assignee: E INK CALIFORNIA, LLC
    Inventors: Shang-Chia Chen, Yajuan Chen, Craig Lin
  • Publication number: 20210248967
    Abstract: A driving method for driving an electrophoretic display comprising four types of particles, the first type of particles and the third type of particles are positively charged, and the second type of particles and the fourth type of particles are negatively charged, the method comprises the steps of: (i).applying a first driving voltage to the pixel of the electrophoretic display for a first period of time at a first amplitude to drive the pixel to a color state of the fourth type of particle at the viewing side; and (ii).applying a second driving voltage to the pixel of the electrophoretic display for a second period of time, opposite to that of the first driving voltage and a second amplitude smaller than that of the first amplitude, to drive the second type particle towards the non-viewing side.
    Type: Application
    Filed: April 29, 2021
    Publication date: August 12, 2021
    Inventors: Shang-Chia CHEN, Yajuan CHEN, Craig LIN
  • Patent number: 11062663
    Abstract: A driving method for driving an electrophoretic display comprising four types of particles, the first type of particles and the third type of particles are positively charged, and the second type of particles and the fourth type of particles are negatively charged, the method comprises the steps of: (i). applying a first driving voltage to the pixel of the electrophoretic display for a first period of time at a first amplitude to drive the pixel to a color state of the fourth type of particle at the viewing side; and (ii). applying a second driving voltage to the pixel of the electrophoretic display for a second period of time, opposite to that of the first driving voltage and a second amplitude smaller than that of the first amplitude, to drive the second type particle towards the non-viewing side.
    Type: Grant
    Filed: November 25, 2019
    Date of Patent: July 13, 2021
    Assignee: E INK CALIFORNIA, LLC
    Inventors: Shang-Chia Chen, Yajuan Chen, Craig Lin
  • Publication number: 20200175929
    Abstract: A driving method for driving an electrophoretic display comprising four types of particles, the first type of particles and the third type of particles are positively charged, and the second type of particles and the fourth type of particles are negatively charged, the method comprises the steps of: (i). applying a first driving voltage to the pixel of the electrophoretic display for a first period of time at a first amplitude to drive the pixel to a color state of the fourth type of particle at the viewing side; and (ii). applying a second driving voltage to the pixel of the electrophoretic display for a second period of time, opposite to that of the first driving voltage and a second amplitude smaller than that of the first amplitude, to drive the second type particle towards the non-viewing side.
    Type: Application
    Filed: November 25, 2019
    Publication date: June 4, 2020
    Inventors: Shang-Chia CHEN, Yajuan CHEN, Craig LIN
  • Patent number: 10535312
    Abstract: A method for driving a display having a plurality of pixels, where each pixel is capable of displaying a first color or a second color and is sandwiched between a first electrode and a pixel electrode, the method including applying a driving sequence which includes: (a) for a first time period, applying a first voltage potential between the first electrode and each of the pixel electrodes of a first group of pixels, and applying no voltage potential between the first electrode and each of the pixel electrodes of a second group of pixels of the second color, thereby causing the display device to display an image of the first color with a background of the second color; and (b) for a second time period, applying no voltage potential between the first electrode and each of the pixel electrodes of the first group of pixels, and applying a second voltage potential to each of the pixel electrodes corresponding to the second group of pixels, to clear the onetime image created in step (a).
    Type: Grant
    Filed: May 22, 2018
    Date of Patent: January 14, 2020
    Assignee: E INK CALIFORNIA, LLC
    Inventors: Robert A. Sprague, Andrew Ho, Yajuan Chen, HongMei Zang, Jialock Wong, Chein Wang
  • Publication number: 20180277045
    Abstract: A method for driving a display having a plurality of pixels, where each pixel is capable of displaying a first color or a second color and is sandwiched between a first electrode and a pixel electrode, the method including applying a driving sequence which includes: (a) for a first time period, applying a first voltage potential between the first electrode and each of the pixel electrodes of a first group of pixels, and applying no voltage potential between the first electrode and each of the pixel electrodes of a second group of pixels of the second color, thereby causing the display device to display an image of the first color with a background of the second color; and (b) for a second time period, applying no voltage potential between the first electrode and each of the pixel electrodes of the first group of pixels, and applying a second voltage potential to each of the pixel electrodes corresponding to the second group of pixels, to clear the onetime image created in step (a).
    Type: Application
    Filed: May 22, 2018
    Publication date: September 27, 2018
    Inventors: Robert A. SPRAGUE, Andrew HO, Yajuan CHEN, HongMei ZANG, Jialock WONG, Chein WANG
  • Publication number: 20180191069
    Abstract: An NFC antenna includes: at least two coils, where the at least two coils are disposed separately and are connected in series or in parallel to form an antenna circuit; at least one substrate, where the at least two coils are disposed on the at least one substrate, and two neighboring coils of the at least two coils are spaced by a substrate of the at least one substrate, projections of the two neighboring coils on the substrate of the at least one substrate at least partially overlap, the at least one substrate is provided with feed points connected to the antenna circuit, and a resonant frequency of the antenna circuit is 15-30 MHz.
    Type: Application
    Filed: June 14, 2016
    Publication date: July 5, 2018
    Inventors: Yajuan Chen, Munyong Choi, Faping Wang
  • Patent number: 10002575
    Abstract: The disclosure is directed toward driving methods and a driving circuit which are particularly suitable for bi-stable displays. In certain embodiments, methods provide the fastest and most pleasing appearance to the desired image while maintaining the optimal image quality over the life expectancy of an electrophoretic display device.
    Type: Grant
    Filed: May 6, 2016
    Date of Patent: June 19, 2018
    Assignee: E INK CALIFORNIA, LLC
    Inventors: Robert A. Sprague, Andrew Ho, Yajuan Chen, HongMei Zang, Jialock Wong, Chein Wang
  • Patent number: 9954583
    Abstract: A mobile terminal and a NFC antenna are provided. The mobile terminal includes: a terminal body, including a rear surface defined with a rear longitudinal centerline and a rear transverse centerline; near field communication antenna, disposed on the rear surface of the terminal body; wherein at least one of the rear longitudinal centerline and the rear transverse centerline pass through the near field communication antenna, and the near field communication antenna is disposed asymmetrically to the at least one of the rear longitudinal centerline and the rear transverse centerline. The mobile terminal according to the present disclosure shows a lower deviation of the resonance frequency when operating the P2P networking, and also shows high communication sensitivity, a high communication success rate, a strong communication capability, etc.
    Type: Grant
    Filed: November 25, 2014
    Date of Patent: April 24, 2018
    Assignee: BYD COMPANY LIMITED
    Inventors: Yajuan Chen, Jiangang Zhou, Dajun Chen
  • Publication number: 20170085301
    Abstract: A mobile terminal and a NFC antenna are provided. The mobile terminal includes: a terminal body, including a rear surface defined with a rear longitudinal centerline and a rear transverse centerline; near field communication antenna, disposed on the rear surface of the terminal body; wherein at least one of the rear longitudinal centerline and the rear transverse centerline pass through the near field communication antenna, and the near field communication antenna is disposed asymmetrically to the at least one of the rear longitudinal centerline and the rear transverse centerline. The mobile terminal according to the present disclosure shows a lower deviation of the resonance frequency when operating the P2P networking, and also shows high communication sensitivity, a high communication success rate, a strong communication capability, etc.
    Type: Application
    Filed: November 25, 2014
    Publication date: March 23, 2017
    Inventors: Yajuan CHEN, Jiangang ZHOU, Dajun CHEN
  • Patent number: 9541814
    Abstract: The present invention is directed to a color display device in which each pixel can display at least five high-quality color states, and an electrophoretic fluid for such an electrophoretic display. In one aspect, the different types of particles exhibit different levels of attraction force to display different color states. In another aspect, the different types of particles exhibit different levels of mobility in different driving voltage ranges to display different color states.
    Type: Grant
    Filed: February 19, 2015
    Date of Patent: January 10, 2017
    Assignee: E INK CALIFORNIA, LLC
    Inventors: Craig Lin, Ming Wang, Hui Du, Xiaojia Zhang, Yu Li, Roman Ivanov, Yajuan Chen
  • Publication number: 20160335956
    Abstract: The disclosure is directed toward driving methods and a driving circuit which are particularly suitable for bi-stable displays. In certain embodiments, methods provide the fastest and most pleasing appearance to the desired image while maintaining the optimal image quality over the life expectancy of an electrophoretic display device.
    Type: Application
    Filed: May 6, 2016
    Publication date: November 17, 2016
    Inventors: Robert A. SPRAGUE, Andrew HO, Yajuan CHEN, HongMei ZANG, Jialock WONG, Chein WANG
  • Patent number: 9490530
    Abstract: A NFC antenna assembly and a mobile communication device are provided. The NFC antenna assembly including: a shell, a connecting device and an antenna circuit, the connecting device includes a female connector and a male connector configured to connect with the female connector via a snap-fit connection, and the antenna circuit formed on the shell and the male connector and defining first and second ends which are adapted to electrically connect with the female connector via the male connector.
    Type: Grant
    Filed: May 27, 2014
    Date of Patent: November 8, 2016
    Assignee: BYD Company Limited
    Inventors: Yajuan Chen, Jiangang Zhou, Dajun Chen