Patents by Inventor Dongguang Wu
Dongguang Wu 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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Patent number: 11243635Abstract: A method for driving touch display and a touch display screen are provided. The touch display screen includes a plurality of continuous work time periods. Each work time period includes a display time period and a touch time period. In the display time period, a plurality of second signal lines are configured to cooperate with a plurality of third signal lines to perform image-signal transmission for image display. The touch time period includes a detection time period and a sensing time period. In the detection time period, at least one second signal line of the plurality of the second signal lines is provided with a touch driving signal, a detection signal is received from a plurality of first signal lines, the detection signal is compared with a preset signal to obtain a comparison result, the touch time period is prolonged or shortened according to the comparison result.Type: GrantFiled: March 23, 2018Date of Patent: February 8, 2022Assignee: SHENZHEN ROYOLE TECHNOLOGIES CO., LTD.Inventors: Dongguang Wu, Xiaoping Tan
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Publication number: 20210311605Abstract: Disclosed are a touch detection method for a touch screen, a touch screen assembly (200) and a display panel assembly (100). The touch screen (30) includes multiple touch sensors arranged in an array, multiple row driving wires and multiple column receiving wires, each of the row driving wires is connected to one row of the touch sensors, and each of the column receiving wires is connected to one column of the touch sensors. The touch detection method includes: providing a driving signal to the row driving wires; differentially amplifying outputs of any two adjacent column receiving wires separately to obtain multiple differentially amplified signals; amplifying an output of any column receiving wire to obtain a single-ended amplified signal; determining that all column receiving wires corresponding to the same row driving wire are touched; and determining that all column receiving wires corresponding to the same row driving wire are not touched.Type: ApplicationFiled: June 17, 2021Publication date: October 7, 2021Inventors: Zening Jiang, Dongguang Wu
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Publication number: 20210011603Abstract: A method for driving touch display and a touch display screen are provided. The touch display screen includes a plurality of continuous work time periods. Each work time period includes a display time period and a touch time period. In the display time period, a plurality of second signal lines are configured to cooperate with a plurality of third signal lines to perform image-signal transmission for image display. The touch time period includes a detection time period and a sensing time period. In the detection time period, at least one second signal line of the plurality of the second signal lines is provided with a touch driving signal, a detection signal is received from a plurality of first signal lines, the detection signal is compared with a preset signal to obtain a comparison result, the touch time period is prolonged or shortened according to the comparison result.Type: ApplicationFiled: March 23, 2018Publication date: January 14, 2021Inventors: Dongguang WU, Xiaoping TAN
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Patent number: 9626927Abstract: A driving circuit comprising a signal edge cutting circuit is described. The signal edge cutting circuit comprises a first switch unit, a second switch unit and a third switch unit wherein the third switch unit decreases a voltage amplitude of the scanning signal by an edge-cutting resistor for implementing the signal edge cutting procedure of the scanning signal. The present invention further provides an LCD apparatus and employs the third switch unit for eliminating the image sticking phenomenon of the display image advantageously.Type: GrantFiled: September 19, 2014Date of Patent: April 18, 2017Assignee: SHENZHEN CHINE STAR OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventors: Yu-Yeh Chen, Yin-Hung Chen, Dongguang Wu
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Publication number: 20160078797Abstract: A driving circuit comprising a signal edge cutting circuit is described. The signal edge cutting circuit comprises a first switch unit, a second switch unit and a third switch unit wherein the third switch unit decreases a voltage amplitude of the scanning signal by an edge-cutting resistor for implementing the signal edge cutting procedure of the scanning signal. The present invention further provides an LCD apparatus and employs the third switch unit for eliminating the image sticking phenomenon of the display image advantageously.Type: ApplicationFiled: September 19, 2014Publication date: March 17, 2016Inventors: Yu-Yeh Chen, Yin-Hung Chen, Dongguang Wu
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Patent number: 8964118Abstract: A display signal processing system, a circuit board, and a liquid crystal display are disclosed. The display signal processing system includes an image processing circuit and a V-by-One circuit capable of selecting a JEIDA mode and a VESA mode. A GPIO of the V-by-One circuit is for selectively inputting a first or a second selection signal such that the V-by-One circuit transforms the converted display signal to be a first LVDS signal under the JEIDA mode or a second LVDS under the VESA mode. The first LVDS or second LVDS signal is output by a signal output. The selection between the VESA mode and the JEIDA may be achieved by a simplified V-by-One circuit. In addition, the display signal processing system retains the advantage of lower cost and simple operations.Type: GrantFiled: April 18, 2013Date of Patent: February 24, 2015Assignee: Shenzhen China Star Optoelectronics Technology Co., Ltd.Inventor: Dongguang Wu
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Publication number: 20140333606Abstract: A driver for use in a liquid crystal display (LCD) includes a signal generator for supplying direct current (DC) voltage and control signal, the control signal comprising 3D enabling signal, a timing controlling module coupled to the signal generator, for receiving the 3D enabling signal, and a DC/DC converter coupled to the signal generator, for outputting vertical synchronous signal to a gate driver to drive a pixel array of the LCD upon receiving 3D enabling signal. The present invention also proposes a driving method for driving an LCD and related LCD. The present invention proposes a simplified circuit design and reduce cost.Type: ApplicationFiled: June 26, 2013Publication date: November 13, 2014Applicant: Shenzhen China Star Optoelectronics Technology Co., Ltd.Inventor: Dongguang Wu
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Publication number: 20140307163Abstract: A display signal processing system, a circuit board, and a liquid crystal display are disclosed. The display signal processing system includes an image processing circuit and a V-by-One circuit capable of selecting a JEIDA mode and a VESA mode. A GPIO of the V-by-One circuit is for selectively inputting a first or a second selection signal such that the V-by-One circuit transforms the converted display signal to be a first LVDS signal under the JEIDA mode or a second LVDS under the VESA mode. The first LVDS or second LVDS signal is output by a signal output. The selection between the VESA mode and the JEIDA may be achieved by a simplified V-by-One circuit. In addition, the display signal processing system retains the advantage of lower cost and simple operations.Type: ApplicationFiled: April 18, 2013Publication date: October 16, 2014Inventor: Dongguang Wu
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Publication number: 20140285540Abstract: The present invention provides a driving method for an LCD and an LCD control circuit using the method thereof. The method includes three steps. Step 1 is that providing an LCD comprising an LCD panel and an LCD control circuit, including a display control unit, a timing controller and a microcontroller interface module, and an electrically erasable programmable read only memory (EEPROM) is integrated into the timing controller. Step 2 is to operate a backlight scan, the timing controller reads EEPROM parameter from the installed EEPROM to generate reference timing for keeping operation of the display control unit under control, and the display control unit generates VSYNC signals. Step 3 is that the control circuit drives the panel to display images. The timing controller in the method integrating the EEPROM simplifies circuit design and raises product integration to reduce producing costs.Type: ApplicationFiled: February 6, 2013Publication date: September 25, 2014Applicant: Shenzhen China Star Optoelectronics Technology Co., Ltd.Inventor: Dongguang Wu
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Publication number: 20140132493Abstract: The present invention provides a clock driver of a liquid crystal display, including a primary timing control chip, a secondary timing control chip, display driving ports, a backlight driving port, a first storage device, a second storage device, and a data input port. The display driving ports are electrically connected to a liquid crystal panel. The backlight driving port is electrically connected to the backlight driving circuit. The primary and secondary timing control chips receive a control signal from the data input port and supply a display timing control signal and a display data signal via the display driving port to the liquid crystal panel according to the control signal. Further, the secondary timing control chip outputs, via the backlight driving port, a pulse width modulation signal to the backlight driving circuit. The clock driver uses two timing control chips to drive the liquid crystal panel and the backlight source.Type: ApplicationFiled: November 25, 2012Publication date: May 15, 2014Applicant: Shenzhen China Star Optoelectronics Technology Co., LTDInventors: Dongguang Wu, Dengxia Zhao