Patents by Inventor Jhen-Shen Liao
Jhen-Shen 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: 20190369440Abstract: A display apparatus including a display panel, a backlight plate and a gate driving circuit is provided. The display panel has a plurality of first scan lines and a plurality of source lines. The backlight plate is overlapped with the display panel and has a plurality of second scan lines and a plurality of data lines. The gate driving circuit is coupled to the first scan lines and the second scan lines respectively through a plurality of pins, so as to transmit a plurality of first scan signals respectively to the first scan lines and transmit a plurality of second scan signals respectively to the second scan lines.Type: ApplicationFiled: August 28, 2018Publication date: December 5, 2019Applicant: Chunghwa Picture Tubes, LTD.Inventors: Chien-Hsun Kuan, Jhen-Shen Liao, Chih-Chao Chang, Hung-Hsiang Chen
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Publication number: 20190180671Abstract: A gate driver circuit is provided. The gate driver circuit includes a plurality of gate driver units. The gate driver units are coupled to each other in sequence, and each of the gate driver units includes a shift register and a de-multiplexer. The shift register receives one of a plurality of operation clock signals and a startup signal and generates a first control signal and a second control signal according to the startup signal and the received operation clock signal. The de-multiplexer is coupled to the shift register and receives a portion of a plurality of gate clock signals to output the received portion of the gate clock signals according to the first control signal to generate a plurality of gate signals in sequence. The gate clock signals are enabled in sequence, and enabling durations of two consecutive clock signals in the gate clock signals are partially overlapped.Type: ApplicationFiled: May 2, 2018Publication date: June 13, 2019Applicant: Chunghwa Picture Tubes, LTD.Inventors: Po-Sheng Cheng, Jhen-Shen Liao, Chien-Hsun Kuan
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Patent number: 10222902Abstract: A touch sensing device includes a substrate, a first electrode, a second electrode, a third electrode, a fourth electrode. The first electrode receives a first triggering signal. The second electrode selectively receives the first triggering signal and a second triggering signal. The first electrode and the second electrode are parallelly disposed on the substrate. The third electrode senses contact touch event according to the first triggering signal to generate a first sensing signal. The fourth electrode selectively senses the contact touch event according to the first triggering signal to generate the first sensing signal and senses contactless touch event according to the second triggering signal to generate a second sensing signal. The third electrode and the fourth electrode are parallelly disposed on the substrate, and the third electrode and the fourth electrode are vertically disposed to the first electrode and the second electrode.Type: GrantFiled: December 22, 2016Date of Patent: March 5, 2019Assignee: CHUNGHWA PICTURE TUBES, LTD.Inventors: Wei-Fu Chang, Jhen-Shen Liao, Hung-Hsiang Chen
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Publication number: 20190042047Abstract: A pixel array substrate including a substrate divided into a pixel region and a peripheral region is provided. A plurality of active devices and a plurality of touch pads are disposed in the pixel region of the substrate. A plurality of gate lines, a plurality of data lines, a plurality of gate signal lines and a plurality of touch signal lines are disposed on the substrate. A gate driver, a source driver and a touch processing unit are disposed in the peripheral region of the substrate and located on a same side of the pixel region. The gate signal lines electrically connect the corresponding gate lines to the gate driver. The touch signal lines electrically connect the corresponding touch pads to the touch processing unit. Portions of the data lines, the gate signal lines and the touch signal lines within the pixel region are parallel to each other.Type: ApplicationFiled: November 24, 2017Publication date: February 7, 2019Applicant: Chunghwa Picture Tubes, LTD.Inventors: Jhen-Shen Liao, Hung-Hsiang Chen
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Publication number: 20180143730Abstract: A touch sensing device includes a substrate, a first electrode, a second electrode, a third electrode, a fourth electrode. The first electrode receives a first triggering signal. The second electrode selectively receives the first triggering signal and a second triggering signal. The first electrode and the second electrode are parallelly disposed on the substrate. The third electrode senses contact touch event according to the first triggering signal to generate a first sensing signal. The fourth electrode selectively senses the contact touch event according to the first triggering signal to generate the first sensing signal and senses contactless touch event according to the second triggering signal to generate a second sensing signal. The third electrode and the fourth electrode are parallelly disposed on the substrate, and the third electrode and the fourth electrode are vertically disposed to the first electrode and the second electrode.Type: ApplicationFiled: December 22, 2016Publication date: May 24, 2018Inventors: Wei-Fu CHANG, Jhen-Shen LIAO, Hung-Hsiang CHEN
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Patent number: 9946916Abstract: A capacitive fingerprint sensor and a sensing panel are provided. The capacitive fingerprinting sensor includes a sensing circuit, a level switch, an output switch. The sensing circuit has a first capacitor providing a sensing voltage according to a first sensing driving signal. A control terminal of the level switch is coupled to the sensing circuit to receive the sensing voltage, a first terminal thereof receives a high voltage level, and a second terminal thereof provides a sensing determination signal. A control terminal of the output switch receives a second sensing driving signal, a first terminal thereof is coupled to the second terminal of the level switch to receive the sensing determination signal, and a second terminal thereof is coupled to a data line. The sensing determination signal is provided through the level switch to avoid a parasitic capacitance on a trace influencing a voltage level of the sensing determination signal.Type: GrantFiled: August 1, 2016Date of Patent: April 17, 2018Assignee: Chunghwa Picture Tubes, Ltd.Inventors: Jhen-Shen Liao, Hung-Hsiang Chen
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Publication number: 20180005013Abstract: A capacitive fingerprint sensor and a sensing panel are provided. The capacitive fingerprinting sensor includes a sensing circuit, a level switch, an output switch. The sensing circuit has a first capacitor providing a sensing voltage according to a first sensing driving signal. A control terminal of the level switch is coupled to the sensing circuit to receive the sensing voltage, a first terminal thereof receives a high voltage level, and a second terminal thereof provides a sensing determination signal. A control terminal of the output switch receives a second sensing driving signal, a first terminal thereof is coupled to the second terminal of the level switch to receive the sensing determination signal, and a second terminal thereof is coupled to a data line. The sensing determination signal is provided through the level switch to avoid a parasitic capacitance on a trace influencing a voltage level of the sensing determination signal.Type: ApplicationFiled: August 1, 2016Publication date: January 4, 2018Applicant: Chunghwa Picture Tubes, LTD.Inventors: Jhen-Shen Liao, Hung-Hsiang Chen
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Patent number: 9632324Abstract: An autostereoscopic display panel includes a display panel and a barrier panel adjacent to each other. The display panel includes a plurality of pixel units. Each of the pixel units includes a plurality of sub-pixels arranged along a first direction, such that each of the pixel units has a pixel width along the first direction. The barrier panel includes a plurality of barrier units. Each of the barrier units includes at least three barrier electrodes parallel to each other. Each of the barrier electrodes has an electrode width along the first direction, and the electrode width is smaller than the pixel width. An alignment method and an autostereoscopic display method using the autostereoscopic display panel are also disclosed.Type: GrantFiled: December 27, 2013Date of Patent: April 25, 2017Assignee: CHUNGHWA PICTURE TUBES, LTD.Inventors: Yung-Yu Hsieh, Jhen-Shen Liao
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Publication number: 20170039918Abstract: A display panel is provided. The display panel includes a plurality of data lines and a sub-pixel array. The sub-pixel array includes a plurality of pixel units. The pixel units are arranged along a first direction or a second direction, the first direction is inclined at a first angle relative to a column direction, and the second direction is inclined at a second angle relative to the column direction. Each of the pixel units includes a plurality of sub-pixels respectively corresponding to three different colors and adjacently arranged in a row direction. Each of the data lines is coupled to a first sub-pixel unit at a side of the data line along the column direction and a second sub-pixel unit at another side of the data line along the column direction. The first sub-pixel unit and the second sub-pixel unit are located in different rows.Type: ApplicationFiled: August 6, 2015Publication date: February 9, 2017Inventors: Fu-Hsiang Tsao, Jhen-Shen Liao, Hung-Hsiang Chen, De-Wei Kuo
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Patent number: 9471175Abstract: A touch sensing panel including a substrate, an electrode array, and a plurality of third electrodes is provided. The substrate has an active area and a peripheral area. The electrode array is located at the active area and includes a plurality of first electrodes and a plurality of second electrodes, wherein the second electrodes and the first electrodes are electrically insulated to each other and intersected with each other. The third electrodes area located at different sides of the peripheral area, respectively, and electrically insulated to the electrode array. A touch sensing control unit applied to the touch sensing panel is also provided.Type: GrantFiled: September 26, 2014Date of Patent: October 18, 2016Assignee: Chunghwa Picture Tubes, LTD.Inventors: De-Wei Kuo, Jhen-Shen Liao, Hung-Hsiang Chen
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Publication number: 20160018915Abstract: A touch sensing panel including a substrate, an electrode array, and a plurality of third electrodes is provided. The substrate has an active area and a peripheral area. The electrode array is located at the active area and includes a plurality of first electrodes and a plurality of second electrodes, wherein the second electrodes and the first electrodes are electrically insulated to each other and intersected with each other. The third electrodes area located at different sides of the peripheral area, respectively, and electrically insulated to the electrode array. A touch sensing control unit applied to the touch sensing panel is also provided.Type: ApplicationFiled: September 26, 2014Publication date: January 21, 2016Inventors: De-Wei Kuo, Jhen-Shen Liao, Hung-Hsiang Chen
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Publication number: 20150062312Abstract: An autostereoscopic display panel includes a display panel and a barrier panel adjacent to each other. The display panel includes a plurality of pixel units. Each of the pixel units includes a plurality of sub-pixels arranged along a first direction, such that each of the pixel units has a pixel width along the first direction. The barrier panel includes a plurality of barrier units. Each of the barrier units includes at least three barrier electrodes parallel to each other. Each of the barrier electrodes has an electrode width along the first direction, and the electrode width is smaller than the pixel width. An alignment method and an autostereoscopic display method using the autostereoscopic display panel are also disclosed.Type: ApplicationFiled: December 27, 2013Publication date: March 5, 2015Applicant: CHUNGHWA PICTURE TUBES, LTD.Inventors: Yung-Yu HSIEH, Jhen-Shen LIAO
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Publication number: 20140292675Abstract: A control system applied to touch and capable of switching two-dimensional (2D)/three-dimensional (3D) mode includes a timing controller, a liquid crystal barrier controller, a backlight controller, and a backlight driving unit. The timing controller receives an image signal and a 2D/3D switching signal from a host, receives a touch signal from a touch panel, and generates a first timing control signal and a second timing control signal. The liquid crystal barrier controller generates and outputs a liquid crystal barrier control signal to the touch panel according to the first timing control signal. The backlight controller generates and outputs a backlight luminance control signal according to the second timing control signal. The backlight driving unit generates and outputs a backlight driving signal to a backlight unit of the touch panel according to the backlight luminance control signal.Type: ApplicationFiled: September 16, 2013Publication date: October 2, 2014Applicant: Chunghwa Picture Tubes, Ltd.Inventors: De-Wei Kuo, Jhen-Shen Liao, Hung-Hsiang Chen
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Patent number: 8810502Abstract: A display system capable of switching 2D/3D mode includes a signal source, a 3D backlight control signal generation circuit, and a display. The signal source is used for transmitting a vertical synchronization signal and a left eye/right eye control signal. The 3D backlight control signal generation circuit is used for executing a first logic operation on the vertical synchronization signal and the left eye/right eye control signal to output a 3D left eye backlight control signal, and executing a second logic operation on the vertical synchronization signal and the left eye/right eye control signal to output a 3D right eye backlight control signal. The display displays 3D images according to the 3D left eye backlight control signal and the 3D right eye backlight control signal.Type: GrantFiled: February 23, 2011Date of Patent: August 19, 2014Assignee: Chunghwa Picture Tubes, Ltd.Inventors: Tao-Ching Yu, Jhen-Shen Liao, Yung-Yu Hsieh
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Publication number: 20140085226Abstract: An integrated system of touch screen and touch key includes a touch screen unit, a touch key unit, a microcontroller and a system unit. The touch screen unit generates a first touch sensing signal according to a first touch event. The touch key unit generates a second touch sensing signal according to a second touch event. The microcontroller transforms the first touch sensing signal to a first data packet and transforms the second touch sensing signal to a second data packet. The microcontroller transmits the first data packet to an interface apparatus in the system unit through a first transmission line and transmits the second data packet to the system unit through a second transmission line.Type: ApplicationFiled: February 26, 2013Publication date: March 27, 2014Applicant: CHUNGHWA PICTURE TUBES, LTD.Inventors: Ching-Lung LI, Jhen-Shen LIAO, Hung-Hsiang CHEN
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Publication number: 20130271388Abstract: A touch sensing three-dimensional (3D) display device includes a display panel and a touch sensing parallax integrated panel. The touch sensing parallax integrated panel located on the display panel includes a first substrate, a second substrate, a touch sensing structure, a display medium layer, a first parallax electrode layer, and a second parallax electrode layer. The second substrate is disposed opposite to the first substrate. The first substrate is located between the display panel and the second substrate. The touch sensing structure is located on the second substrate. The display medium layer is disposed between the first substrate and the second substrate. The first parallax electrode layer disposed on the first substrate is located between the display medium layer and the first substrate. The second parallax electrode layer disposed on the second substrate is located between the display medium layer and the second substrate.Type: ApplicationFiled: August 3, 2012Publication date: October 17, 2013Applicant: CHUNGHWA PICTURE TUBES, LTD.Inventors: Bo-Han Chu, De-Wei Kuo, Jhen-Shen Liao, Wen-Che Wang, Te-Yu Chen, Wen-Chuan Wang, Hung-Hsiang Chen
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Publication number: 20130257827Abstract: A backlight module used in a display device is provided. The backlight module comprises a first and a second view-angle LED groups, a first and a second switches, a LED drive circuit for generating a drive current and a mode-control unit. The first and the second switches enable or disable the first and the second view-angle LED groups according to a first and a second PWM signals respectively. The mode-control unit operates the backlight module in 2D or 3D display mode according to a mode-control signal. In the 2D display mode, the first and the second switches enable the first and the second view-angle LED groups synchronously to emit light according to the drive current. In the 3D display mode, the first and the second switches enable the first and the second view-angle LED groups with an interlaced manner to emit light according to the drive current.Type: ApplicationFiled: August 9, 2012Publication date: October 3, 2013Applicant: CHUNGHWA PICTURE TUBES, LTD.Inventors: Yung-Yu HSIEH, Jhen-Shen LIAO, Hung-Hsiang CHEN
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Patent number: 8487854Abstract: A method for driving a liquid crystal display (LCD) apparatus, wherein the LCD apparatus comprises a plurality of scan rows, a plurality of data columns, and a data driving circuit, includes: driving a plurality of specific scan rows of the plurality of scan rows at a same time; extracting a plurality of pixel data, arranged into a first order, corresponding to the plurality of specific scan rows; arranging the plurality of pixel data into a second order different from the first order according to a connecting relationship between the data driving circuit and a plurality of pixels of the plurality of specific scan rows; and utilizing the data driving circuit to drive a plurality of pixels according to the plurality of pixel data corresponding to the second order.Type: GrantFiled: December 30, 2008Date of Patent: July 16, 2013Assignee: Chunghwa Picture Tubes, Ltd.Inventors: Jhen-Shen Liao, Kuan-Hung Liu, Yi-Nan Chu
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Publication number: 20130070066Abstract: A three-dimensional display apparatus and a data processing method thereof are provided. The three-dimensional display apparatus includes a data processing module. The data processing module includes an image comparison unit and an image compensation unit. The image comparison unit receives a first eye frame and a second eye frame in order, compares a plurality of first gray-scale data of the first eye frame with a plurality of second gray-scale data of the second eye frame respectively, and outputs a plurality of comparison results. The image compensation unit is coupled to the image comparison unit and generates a compensation frame corresponding to the second eye frame according to the comparison results. Therefore, image sticking can be avoided.Type: ApplicationFiled: November 14, 2011Publication date: March 21, 2013Applicant: CHUNGHWA PICTURE TUBES, LTD.Inventors: Tao-Ching Yu, Jhen-Shen Liao, Hung-Hsiang Chen
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Patent number: 8390651Abstract: A driving method for driving a display apparatus is provided. The driving method includes: configuring a plurality of driving voltages corresponding to a plurality of gray scales, where the gray scales include a first gray scale and a second gray scale smaller than the first gray scale, and a first driving voltage corresponding to the first gray scale is lower than a second driving voltage corresponding to the second gray scale; and controlling the display apparatus to display a gray scale merely up to the second gray scale. In this way, the driving method hence reduces the response time of the display apparatus, which may be an LCD display panel.Type: GrantFiled: April 27, 2009Date of Patent: March 5, 2013Assignee: Chunghwa Picture Tubes, Ltd.Inventors: Kuei-Wei Huang, Yi-Cheng Tsai, Qi-Ming Lu, Jhen-Shen Liao, Kuan-Hung Liu