Patents by Inventor Chi-Chang Liao
Chi-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).
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Publication number: 20240126127Abstract: A cholesteric liquid crystal display device includes a first substrate, a second substrate, a third substrate, a first cholesteric liquid crystal layer, a second cholesteric liquid crystal layer, a first common electrode pattern layer, a second common electrode pattern layer, and a first TFT circuit pattern layer and the second TFT circuit pattern layer. The first cholesteric liquid crystal layer is disposed between the first substrate and the second substrate. The second cholesteric liquid crystal layer is disposed between the second substrate and the third substrate. The first common electrode pattern layer is disposed on the first substrate. The second common electrode pattern layer is disposed on the third substrate. The first TFT circuit pattern layer and the second TFT circuit pattern layer are respectively disposed on two opposite surfaces of the second substrate. The first TFT circuit pattern layer and the second TFT circuit pattern layer are arranged correspondingly.Type: ApplicationFiled: October 13, 2023Publication date: April 18, 2024Inventors: CHI-CHANG LIAO, WU-CHANG YANG
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Patent number: 11959864Abstract: A photolithography method includes dispensing a first liquid toward a target layer through a nozzle at a first distance from the target layer; moving the nozzle such that the nozzle is at a second distance from the target layer, wherein the second distance is different from the first distance; dispensing a second liquid toward the target layer through the nozzle at the second distance from the target layer; and patterning the target layer after dispensing the first liquid and the second liquid.Type: GrantFiled: November 22, 2022Date of Patent: April 16, 2024Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING CO., LTD.Inventors: Chi-Hung Liao, Wei Chang Cheng
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Patent number: 11961485Abstract: 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: GrantFiled: April 11, 2023Date of Patent: April 16, 2024Assignee: IRIS OPTRONICS CO., LTD.Inventors: Cheng-Hung Yao, Chi-Chang Liao
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Patent number: 11947204Abstract: A cholesterol liquid crystal display device includes a liquid crystal display panel and a liquid crystal driving unit. The liquid crystal display panel has a plurality of pixels. The liquid crystal driving unit applies row driving voltages and column driving voltages to a designated pixel according to the input signal. After the input signal is transmitted, the liquid crystal driving unit activates the power-down signal within a certain period of time to reduce the row driving voltage and the column driving voltage applied to the specified pixel. Thereby, the crosstalk phenomenon on the cholesteric liquid crystal display device can be improved.Type: GrantFiled: November 14, 2022Date of Patent: April 2, 2024Assignee: IRIS OPTRONICS CO., LTD.Inventors: Wu-Chang Yang, Chi-Chang Liao
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Patent number: 11948528Abstract: 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: GrantFiled: May 10, 2023Date of Patent: April 2, 2024Assignee: IRIS OPTRONICS CO., LTD.Inventors: Ming-Liang Tsai, Wu-Chang Yang, Chi-Chang Liao
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Patent number: 11946569Abstract: An actuating and sensing module is disclosed and includes a bottom plate, a gas pressure sensor, a thin gas transportation device and a cover plate. The bottom plate includes a pressure relief orifice, a discharging orifice and a communication orifice. The gas pressure sensor is disposed on the bottom plate and seals the communication orifice. The thin gas transportation device is disposed on the bottom plate and seals the pressure relief orifice and the discharging orifice. The cover plate is disposed on the bottom plate and covers the gas pressure sensor and the thin gas-transportation device. The cover plate includes an intake orifice. The thin gas transportation device is driven to inhale gas through the intake orifice, the gas is then discharged through the discharging orifice by the thin gas transportation device, and a pressure change of the gas is sensed by the gas pressure sensor.Type: GrantFiled: April 19, 2021Date of Patent: April 2, 2024Assignee: MICROJET TECHNOLOGY CO., LTD.Inventors: Hao-Jan Mou, Shih-Chang Chen, Jia-Yu Liao, Hung-Hsin Liao, Chung-Wei Kao, Chi-Feng Huang, Yung-Lung Han, Chang-Yen Tsai, Wei-Ming Lee
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Publication number: 20240045245Abstract: A cholesteric liquid crystal composite display device includes a cholesteric liquid crystal reflective display device and a transmissive display device. The transmissive display device is located below the cholesteric liquid crystal reflective display device. When the cholesteric liquid crystal reflective display device is displayed in a transparent state, the light transmittance of the cholesteric liquid crystal reflective display device is higher than that of the cholesteric liquid crystal reflective display device when it is displayed in a dark state through a rated driving mode. Thereby, the display of the cholesteric liquid crystal composite display device is made clearer and the display quality is improved.Type: ApplicationFiled: August 7, 2023Publication date: February 8, 2024Inventors: CHENG-HUNG YAO, CHI-CHANG LIAO
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Publication number: 20240013743Abstract: 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: ApplicationFiled: July 11, 2023Publication date: January 11, 2024Inventors: Chia-Che WU, Wu-Chang YANG, Chi-Chang LIAO
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Patent number: 11852941Abstract: 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: GrantFiled: January 18, 2023Date of Patent: December 26, 2023Assignee: IRIS OPTRONICS CO., LTD.Inventors: Wu-Chang Yang, Hung Tien Chen, Chi-Chang Liao
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Publication number: 20230386426Abstract: 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: ApplicationFiled: May 10, 2023Publication date: November 30, 2023Inventors: MING-LIANG TSAI, WU-CHANG YANG, CHI-CHANG LIAO
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Publication number: 20230368747Abstract: 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: ApplicationFiled: May 16, 2023Publication date: November 16, 2023Inventors: SHENG-YAO WANG, WU-CHANG YANG, CHENG-HUNG YAO, CHI-CHANG LIAO
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Publication number: 20230335072Abstract: 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: ApplicationFiled: April 11, 2023Publication date: October 19, 2023Inventors: CHENG-HUNG YAO, CHI-CHANG LIAO
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Publication number: 20230229049Abstract: 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: ApplicationFiled: January 18, 2023Publication date: July 20, 2023Inventors: WU-CHANG YANG, HUNG TIEN CHEN, CHI-CHANG LIAO
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Publication number: 20230229034Abstract: 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: ApplicationFiled: January 18, 2023Publication date: July 20, 2023Inventors: WU-CHANG YANG, HUNG TIEN CHEN, CHI-CHANG LIAO
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Patent number: 11705076Abstract: 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: GrantFiled: May 5, 2022Date of Patent: July 18, 2023Assignee: IRIS OPTRONICS CO., LTD.Inventors: Chi-Chang Liao, Cheng-Hung Yao, Chieh-Chao Ho
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Publication number: 20230185136Abstract: 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: ApplicationFiled: December 8, 2022Publication date: June 15, 2023Inventors: MING-LIANG TSAI, WU-CHANG YANG, CHI-CHANG LIAO
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Publication number: 20230185121Abstract: 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: ApplicationFiled: December 8, 2022Publication date: June 15, 2023Inventors: CHI-WEI LIN, WU-CHANG YANG, CHI-CHANG LIAO
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Publication number: 20230152615Abstract: A cholesterol liquid crystal display device includes a liquid crystal display panel and a liquid crystal driving unit. The liquid crystal display panel has a plurality of pixels. The liquid crystal driving unit applies row driving voltages and column driving voltages to a designated pixel according to the input signal. After the input signal is transmitted, the liquid crystal driving unit activates the power-down signal within a certain period of time to reduce the row driving voltage and the column driving voltage applied to the specified pixel. Thereby, the crosstalk phenomenon on the cholesteric liquid crystal display device can be improved.Type: ApplicationFiled: November 14, 2022Publication date: May 18, 2023Inventors: WU-CHANG YANG, CHI-CHANG LIAO
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Publication number: 20220358887Abstract: 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: ApplicationFiled: May 5, 2022Publication date: November 10, 2022Inventors: CHI-CHANG LIAO, CHENG-HUNG YAO, CHIEH-CHAO HO
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Patent number: 11327375Abstract: A reflective cholesteric liquid crystal display includes a display unit. The display unit includes a upper transparent substrate, a lower substrate, a upper transparent electrode pattern formed on the upper transparent substrate, a lower transparent electrode pattern formed on the lower substrate, a cholesteric liquid crystal layer sandwiched between the upper transparent electrode pattern and the lower transparent electrode pattern, and a light absorbing layer formed on the upper transparent substrate. The cholesteric liquid crystal layer is used for generating a visible light including a wavelength range. The light absorbing layer is used for absorbing light outside the wavelength range, so that the visible light in the wavelength range passes through the light absorbing layer and the upper transparent substrate.Type: GrantFiled: May 15, 2020Date of Patent: May 10, 2022Assignee: Iris Optronics Co., Ltd.Inventors: Chi-Chang Liao, Chun-Kang Ku