Patents by Inventor Chang LIAO

Chang LIAO 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: 20240021694
    Abstract: A semiconductor structure is provided. The semiconductor structure includes a substrate, a first superlattice structure and a second superlattice structure over the substrate, a gate stack that surrounds a channel region of each of the first superlattice structures and the second superlattice structure, and source/drain structures on opposite sides of the gate stack contacting sidewalls of the first superlattice structure and the second superlattice structure. The second superlattice structure is disposed over the first superlattice structure. Each of the first superlattice structures and the second superlattice structure includes vertically stacked alternating first nanosheets of a first semiconductor material and second nanosheets of a second semiconductor material that is different from the first semiconductor material.
    Type: Application
    Filed: July 31, 2023
    Publication date: January 18, 2024
    Inventors: Shin-Cheng LIU, Kuei-Shu CHANG LIAO
  • Publication number: 20240013743
    Abstract: A cholesteric liquid crystal (ChLC) display and driving method thereof are provided. The ChLC display has a driving circuit for providing voltage on a scan line and a data line so as to drive a pixel. The driving circuit provides a first voltage and a second voltage to the data and the scan lines during a first time period, a third voltage to the data line and/or a fourth voltage to the scan line during a second time period, a fifth voltage and a sixth voltage to the data and the scan lines during a third time period. The first and sixth voltages are high levels, the second and fifth voltages are low levels, the levels of the third and fourth voltages are between the high and low levels.
    Type: Application
    Filed: July 11, 2023
    Publication date: January 11, 2024
    Inventors: Chia-Che WU, Wu-Chang YANG, Chi-Chang LIAO
  • Publication number: 20240014066
    Abstract: A trench isolation structure and method of making the same is provided. The trench isolation structure comprises a trench in a substrate, the trench having a bottom surface and sidewalls. A polycrystalline material is at least partially in the trench and an amorphous layer is over the polycrystalline material.
    Type: Application
    Filed: July 6, 2022
    Publication date: January 11, 2024
    Inventors: HUNG CHANG LIAO, SHIANG YANG ONG, JIANBO ZHOU, ZHONGXIU YANG, SIVAKAMI SUBRAMANIAN
  • Patent number: 11852941
    Abstract: A cholesteric liquid crystal display device includes a solar cell, a first substrate, a shielding layer, a first electrode layer, a cholesteric liquid crystal layer, a second electrode layer and a second substrate stacked sequentially from bottom to top. The solar cell includes a metal wiring pattern layer. The shielding layer corresponds to the upper side of the metal wiring pattern layer, and is used to reduce the reflection of light from the metal circuit pattern layer. In this way, the cholesteric liquid crystal display device replaces the traditional black absorbing layer with the black material of the solar cell, which can not only absorb light, but also display the image with self-sustaining power. The cholesteric liquid crystal display device shields the arrangement of the metal wiring pattern layer through the shielding layer, which can ensure the image quality of the display panel.
    Type: Grant
    Filed: January 18, 2023
    Date of Patent: December 26, 2023
    Assignee: IRIS OPTRONICS CO., LTD.
    Inventors: Wu-Chang Yang, Hung Tien Chen, Chi-Chang Liao
  • Publication number: 20230386426
    Abstract: The present invention relates to a driving method of a cholesteric liquid crystal display. It includes the steps in the following: driving each scan line by a dynamic driving scheme (DDS) including an Evolution phase; refreshing a frame of the cholesteric liquid crystal display by a full refresh mode, each scan line driven N times during the Evolution phase in the full refresh mode; and refreshing a part of the frame by a partial-refresh mode, each scan line driven M times in the Evolution phase in the partial-refresh mode, wherein M is greater than N.
    Type: Application
    Filed: May 10, 2023
    Publication date: November 30, 2023
    Inventors: MING-LIANG TSAI, WU-CHANG YANG, CHI-CHANG LIAO
  • Publication number: 20230368747
    Abstract: The present invention relates to a cholesteric liquid crystal display, a micro processing unit, and a method for hybrid driving. The cholesteric liquid crystal display comprises a display panel and a micro processing unit. First, a grayscale threshold value needs to be set in advance. The micro processing unit will change the grayscale value of the display unit exceeding the grayscale threshold value to the new grayscale value displayed by the bright state color, and display the image by the DDS driving mode. Then the micro processing unit drives the display image in the PWM drive mode, which can greatly improve the color level and contrast display effect of the image.
    Type: Application
    Filed: May 16, 2023
    Publication date: November 16, 2023
    Inventors: SHENG-YAO WANG, WU-CHANG YANG, CHENG-HUNG YAO, CHI-CHANG LIAO
  • Patent number: 11815275
    Abstract: A portable electronic device includes a signal control module, an information display module, a temperature and humidity sensing module, and a gas detection module. The information display module is configured for providing a plurality of information display images. The gas detection module is configured for detecting a gas concentration of a predetermined gas to obtain a gas concentration value. One of the information display images has a temperature and humidity coordinate graph, and a plurality of comfortability distribution areas shown on the temperature and humidity coordinate graph, an ambient temperature value and an ambient humidity value that are obtained by the temperature and humidity sensing module serve as a temperature and humidity indicator shown on one of the comfortability distribution areas, and the gas concentration value that is obtained by the gas detection module serves as a comfortability indicator shown on one of the comfortability distribution areas.
    Type: Grant
    Filed: January 18, 2022
    Date of Patent: November 14, 2023
    Assignee: RADIANT INNOVATION INC.
    Inventors: Yu-Chien Huang, Chien-Chang Liao
  • Patent number: 11804532
    Abstract: A semiconductor structure is provided. The semiconductor structure includes a substrate, a first superlattice structure and a second superlattice structure over the substrate, a gate stack that surrounds a channel region of each of the first superlattice structures and the second superlattice structure, and source/drain structures on opposite sides of the gate stack contacting sidewalls of the first superlattice structure and the second superlattice structure. The second superlattice structure is disposed over the first superlattice structure. Each of the first superlattice structures and the second superlattice structure includes vertically stacked alternating first nanosheets of a first semiconductor material and second nanosheets of a second semiconductor material that is different from the first semiconductor material.
    Type: Grant
    Filed: August 27, 2021
    Date of Patent: October 31, 2023
    Assignee: Taiwan Semiconductor Manufacturing Co., Ltd.
    Inventors: Shin-Cheng Liu, Kuei-Shu Chang Liao
  • Publication number: 20230335072
    Abstract: The present invention relates to a cholesteric liquid crystal display, a liquid crystal driving unit, and a driving method for reducing the maximum driving voltage. The cholesteric liquid crystal display comprises a cholesteric liquid crystal display panel, a temperature detecting device, and a liquid crystal driving unit. If the temperature detecting device detects a temperature below the optimal range for the cholesteric liquid crystal display panel, the liquid crystal driving unit will operate the cholesteric liquid crystal display panel in DDS timing mode. When the temperature detecting device detects that the temperature of the display panel exceeds the optimal temperature range, the liquid crystal driving unit will operate the display panel in PWM timing mode, which can solve the problem of increased power consumption caused by changes in ambient temperature, and can greatly improve the better color level.
    Type: Application
    Filed: April 11, 2023
    Publication date: October 19, 2023
    Inventors: CHENG-HUNG YAO, CHI-CHANG LIAO
  • Publication number: 20230335583
    Abstract: Semiconductor structures including a deep trench isolation structure and methods of forming a semiconductor structure including a deep trench isolation structure. The semiconductor structure includes a semiconductor substrate having a device region, and a deep trench isolation structure in the semiconductor substrate. The deep trench isolation structure further includes a first portion, a second portion adjacent to the first portion, and a conductor layer in the first portion and the second portion. The conductor layer in the first portion of the deep trench isolation structure surrounds the device region. The conductor layer in the second portion of the deep trench isolation structure defines an electrical connection to the semiconductor substrate.
    Type: Application
    Filed: April 19, 2022
    Publication date: October 19, 2023
    Inventors: Jianbo Zhou, Shiang Yang Ong, Namchil Mun, Hung Chang Liao, Zhongxiu Yang
  • Publication number: 20230229049
    Abstract: A cholesteric liquid crystal display device includes a solar cell, a first substrate, a shielding layer, a first electrode layer, a cholesteric liquid crystal layer, a second electrode layer and a second substrate stacked sequentially from bottom to top. The solar cell includes a metal wiring pattern layer. The shielding layer corresponds to the upper side of the metal wiring pattern layer, and is used to reduce the reflection of light from the metal circuit pattern layer. In this way, the cholesteric liquid crystal display device replaces the traditional black absorbing layer with the black material of the solar cell, which can not only absorb light, but also display the image with self-sustaining power. The cholesteric liquid crystal display device shields the arrangement of the metal wiring pattern layer through the shielding layer, which can ensure the image quality of the display panel.
    Type: Application
    Filed: January 18, 2023
    Publication date: July 20, 2023
    Inventors: WU-CHANG YANG, HUNG TIEN CHEN, CHI-CHANG LIAO
  • Publication number: 20230228439
    Abstract: A portable electronic device includes a signal control module, an information display module, a temperature and humidity sensing module, and a gas detection module. The information display module is configured for providing a plurality of information display images. The gas detection module is configured for detecting a gas concentration of a predetermined gas to obtain a gas concentration value. One of the information display images has a temperature and humidity coordinate graph, and a plurality of comfortability distribution areas shown on the temperature and humidity coordinate graph, an ambient temperature value and an ambient humidity value that are obtained by the temperature and humidity sensing module serve as a temperature and humidity indicator shown on one of the comfortability distribution areas, and the gas concentration value that is obtained by the gas detection module serves as a comfortability indicator shown on one of the comfortability distribution areas.
    Type: Application
    Filed: January 18, 2022
    Publication date: July 20, 2023
    Inventors: YU-CHIEN HUANG, CHIEN-CHANG LIAO
  • Publication number: 20230228724
    Abstract: A portable electronic device for use in different orientations includes a signal control module, a key control module, an information display module, and a position detection module. The key control module includes a plurality of functional switches and functional keys. The signal control module has a plurality of key function execution commands respectively corresponding to the functional keys. The position detection module is configured for detecting a placement orientation of the portable electronic device. When the portable electronic device is rotated to change the placement orientation of the information display module, a screen orientation of an information display image provided by the information display module is changed following a change of the placement orientation of the information display module, and a corresponding relationship between the functional switch and the key function execution command is changed following the change of the placement orientation of the information display module.
    Type: Application
    Filed: January 18, 2022
    Publication date: July 20, 2023
    Inventors: YU-CHIEN HUANG, CHIEN-CHANG LIAO
  • Publication number: 20230229034
    Abstract: A cholesteric liquid crystal display device includes a first substrate, a solar cell, a shielding layer, a first electrode layer, a cholesteric liquid crystal layer, a second electrode layer and a second substrate stacked sequentially from bottom to top. The solar cell includes a metal wiring pattern layer. The shielding layer corresponds to the upper side of the metal wiring pattern layer, and is used to reduce the reflection of light from the metal circuit pattern layer. In this way, the cholesteric liquid crystal display device replaces the traditional black absorbing layer with the black material of the solar cell, which can not only absorb light, but also display the image with self-sustaining power. The cholesteric liquid crystal display device shields the arrangement of the metal wiring pattern layer through the shielding layer, which can ensure the image quality of the display panel.
    Type: Application
    Filed: January 18, 2023
    Publication date: July 20, 2023
    Inventors: WU-CHANG YANG, HUNG TIEN CHEN, CHI-CHANG LIAO
  • Patent number: 11705076
    Abstract: A cholesteric liquid crystal (LC) composite display device includes a light absorbing substrate, a first and second transparent substrates, a light supplement module arranged between the light absorbing substrate and the first transparent substrate, a control module, a first and second electrode layers respectively formed on the first and second transparent substrates, a first cholesteric LC layer sandwiched between the first and second electrode layers, and a first light absorbing layer disposed on the second transparent substrate. The projection of the first light absorbing layer on the horizontal plane and the projection of the light supplement module on the horizontal plane are arranged in a misaligned manner. The control module is provided for controlling the light supplement module according to the brightness signal. Thereby, when the external brightness is low, the light supplement module enhances the displaying brightness of the cholesteric LC composite display device to meet the usage requirements.
    Type: Grant
    Filed: May 5, 2022
    Date of Patent: July 18, 2023
    Assignee: IRIS OPTRONICS CO., LTD.
    Inventors: Chi-Chang Liao, Cheng-Hung Yao, Chieh-Chao Ho
  • Patent number: 11690171
    Abstract: A conductive bump electrode structure includes a substrate, an elastic circuit layer, at least two conductive bumps, and an insulating layer. The elastic circuit layer is mounted on the substrate, and includes at least one elastic circuit. The at least two conductive bumps are mounted on the elastic circuit layer, and are electrically connected to each other through the at least one elastic circuit. The insulating layer is mounted on the elastic circuit layer, and includes at least two holes. Since there is a gap between the conductive bumps, the conductive bump electrode structure is easy to be bent and fit body curves of various parts of a user. The elastic circuit can stretch or compress along with the user's movement due to its elasticity, thereby increasing suitability of the conductive bump electrode structure to the human body.
    Type: Grant
    Filed: April 28, 2021
    Date of Patent: June 27, 2023
    Assignee: SINGULAR WINGS MEDICAL CO., LTD.
    Inventors: Chin-Chang Liao, Jheng-Fen Guo
  • Publication number: 20230194491
    Abstract: A smart wearable device includes a wearable device body, a signal control module, a gas detection module, a signal recording module, and a vibration generating module. The gas detection module can detect a gas concentration of a predetermined gas surrounding the wearable device body so as to obtain a gas concentration signal. The signal recording module can record a plurality of gas concentration values that are provided by the gas concentration signal, and record a plurality of gas-measuring time points that are respectively configured for obtaining the gas concentration values. The vibration generating module can generate a prompt signal according to the gas concentration value provided by the gas concentration signal, and generate a beat signal according to a user setting value. Therefore, the smart wearable device can provide relevant information corresponding to the gas concentration signal, the prompt signal, and the beat signal for a user.
    Type: Application
    Filed: December 17, 2021
    Publication date: June 22, 2023
    Inventors: YU-CHIEN HUANG, CHIEN-CHANG LIAO
  • Publication number: 20230185136
    Abstract: A cholesteric liquid crystal display device and a driving method for improving non-uniform image quality of the cholesteric liquid crystal display device. The cholesteric liquid crystal display device includes a cholesteric liquid crystal display panel and a liquid crystal drive unit. The cholesteric liquid crystal display panel is composed of multiple row circuit structures and multiple column circuit structures. The liquid crystal driving unit sequentially outputs column driving voltages to a plurality of column circuit structures in a scanning manner. After scanning the multiple column circuit structures, the liquid crystal driving unit applies an unselected voltage to the multiple column circuit structures together with more than 18 times the scanning unit time course, so as to make the brightness of the overall picture more uniform.
    Type: Application
    Filed: December 8, 2022
    Publication date: June 15, 2023
    Inventors: MING-LIANG TSAI, WU-CHANG YANG, CHI-CHANG LIAO
  • Publication number: 20230185121
    Abstract: A cholesteric liquid crystal display device and a control method for reducing inrush current when clearing the screen. The cholesteric liquid crystal display device includes a cholesteric liquid crystal display panel and a liquid crystal drive unit. The cholesteric liquid crystal display panel has a plurality of pixel matrix. After the liquid crystal drive unit receives a data latch enable signal, it applies a reset voltage to the plurality of pixel matrix to clear the screen displayed on the cholesteric liquid crystal display panel. The input time of the data latch enable signal received by the liquid crystal driving unit is different, and the corresponding signal time portion is shifted with each other.
    Type: Application
    Filed: December 8, 2022
    Publication date: June 15, 2023
    Inventors: CHI-WEI LIN, WU-CHANG YANG, CHI-CHANG LIAO
  • Patent number: D1010830
    Type: Grant
    Filed: December 19, 2021
    Date of Patent: January 9, 2024
    Assignee: RADIANT INNOVATION INC.
    Inventors: Yu-Chien Huang, Chien-Chang Liao