Patents by Inventor Ching-Wu Tseng

Ching-Wu Tseng 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: 20140247402
    Abstract: An in-cell touch control panel includes a liquid crystal layer; a top glass; a bottom glass; a plurality of driving electrodes, formed between the top glass and the liquid crystal layer; and a plurality of sensing electrodes, formed between the bottom glass and the liquid crystal layer, and perpendicular to the plurality of driving electrodes. The plurality of driving electrodes and the plurality of sensing electrodes are utilized for sensing a touch point on the in-cell touch control panel.
    Type: Application
    Filed: August 21, 2013
    Publication date: September 4, 2014
    Applicant: NOVATEK Microelectronics Corp.
    Inventors: Chun-Yi Chou, Ching-Wu Tseng, Jiun-Jie Tsai, Yu-Tsung Lu, Tsen-Wei Chang
  • Patent number: 8022918
    Abstract: A gate switch apparatus of a-Si LCDs is provided. The gate switch apparatus is suitable for switching a plurality of sub gate lines and disposed in two rim spaces of a display to make a-Si TFT switch with less impedance. According to a switch driving timing, a plurality of sub gate lines are able to share a single gate line, which saves cost and reduces the difficulty in the manufacturing process.
    Type: Grant
    Filed: October 20, 2009
    Date of Patent: September 20, 2011
    Assignee: Novatek Microelectronics Corp.
    Inventors: Chih-Hsin Hsu, Ching-Wu Tseng
  • Patent number: 7948462
    Abstract: A method for driving an LCD monitor includes providing a common-voltage signal having a level conversion during each frame duration, dividing each frame duration into a first sub-frame duration and a second sub-frame duration according to a position having the level conversion of the common-voltage signal, driving a first set of pixel units during the first sub-frame duration according to a level of the common-voltage signal within the first sub-frame duration, and driving a second set of pixel units during the second sub-frame duration according to a level of the common-voltage signal within the second sub-frame duration.
    Type: Grant
    Filed: January 21, 2007
    Date of Patent: May 24, 2011
    Assignee: NOVATEK Microelectronics Corp.
    Inventor: Ching-Wu Tseng
  • Patent number: 7768506
    Abstract: A gate driving device comprises a control circuit, a shift register circuit, a level shifter, a buffer block and a current overdrive protection device. The control circuit receives and outputs the logic control signals. The shift register circuit receives the logic control signals and sequentially outputs N horizontal low-voltage pulse signals from the first to Nth horizontal lines. The level shifter receives and transforms the horizontal low-voltage pulse signals into positive/negative high-voltage signals. The buffer block receives the horizontal positive/negative high-voltage signals and buffers the driving of the output level device. The current overdrive protection device receives the logic control signal and the horizontal low-voltage pulse signals. The current overdrive protection device, while being properly triggered, outputs the reset signal to prevent the sudden current spike. Accordingly, the damage of the gate driving device is avoided.
    Type: Grant
    Filed: July 27, 2005
    Date of Patent: August 3, 2010
    Assignee: Novatek Microelectronics Corp.
    Inventor: Ching-Wu Tseng
  • Patent number: 7701543
    Abstract: A method of layout of a driving chip of an LCD, for reducing a size of the LCD, includes forming a first pin group including a plurality of pins utilized for outputting gate driving signals along a first direction, forming a second pin group including a plurality of pins utilized for outputting gate driving signals along the first direction, forming a first wire group including a plurality of wires each coupled between a pin of the first pin group and a panel of the LCD, and forming a second wire group including a plurality of wires each coupled between a pin of the second pin group and the panel, wherein each wire of the second wire group includes at least a bender formed inside the driving chip.
    Type: Grant
    Filed: January 21, 2007
    Date of Patent: April 20, 2010
    Assignee: NOVATEK Microelectronics Corp.
    Inventor: Ching-Wu Tseng
  • Publication number: 20100039361
    Abstract: A gate switch apparatus of a-Si LCDs is provided. The gate switch apparatus is suitable for switching a plurality of sub gate lines and disposed in two rim spaces of a display to make a-Si TFT switch with less impedance. According to a switch driving timing, a plurality of sub gate lines are able to share a single gate line, which saves cost and reduces the difficulty in the manufacturing process.
    Type: Application
    Filed: October 20, 2009
    Publication date: February 18, 2010
    Applicant: NOVATEK MICROELECTRONICS CORP.
    Inventors: Chih-Hsin Hsu, Ching-Wu Tseng
  • Patent number: 7626568
    Abstract: A gate switch apparatus of a-Si LCDs is provided. The gate switch apparatus is suitable for switching a plurality of sub gate lines and disposed in two rim spaces of a display to make a-Si TFT switch with less impedance. According to a switch driving timing, a plurality of sub gate lines are able to share a single gate line, which saves cost and reduces the difficulty in the manufacturing process.
    Type: Grant
    Filed: October 4, 2005
    Date of Patent: December 1, 2009
    Assignee: Novatek Microelectronics Corp.
    Inventors: Chih-Hsin Hsu, Ching-Wu Tseng
  • Patent number: 7508247
    Abstract: A latchable voltage level shifter is provided. The latchable voltage level shifter comprises: a voltage level shifter receiving an original input signal and generating a high voltage signal according to a timing sequence of a first phase control signal; and a high voltage flip-flop, coupled to the voltage level shifter, receiving the high voltage signal and a second phase control signal, the high voltage flip-flop latching the high voltage signal according to a timing sequence of the second phase control signal and outputting a high voltage output signal. The latchable voltage level shifter can be used in a source drive circuit so as to reduce the layout area and production cost.
    Type: Grant
    Filed: August 31, 2006
    Date of Patent: March 24, 2009
    Assignee: Novatek Microelectronics Corp.
    Inventors: Ching-Wu Tseng, Alex Tang
  • Publication number: 20080100556
    Abstract: A method of layout of a driving chip of an LCD, for reducing a size of the LCD, includes forming a first pin group including a plurality of pins utilized for outputting gate driving signals along a first direction, forming a second pin group including a plurality of pins utilized for outputting gate driving signals along the first direction, forming a first wire group including a plurality of wires each coupled between a pin of the first pin group and a panel of the LCD, and forming a second wire group including a plurality of wires each coupled between a pin of the second pin group and the panel, wherein each wire of the second wire group includes at least a bender formed inside the driving chip.
    Type: Application
    Filed: January 21, 2007
    Publication date: May 1, 2008
    Inventor: Ching-Wu Tseng
  • Publication number: 20080094332
    Abstract: A method for driving an LCD monitor includes providing a common-voltage signal having a level conversion during each frame duration, dividing each frame duration into a first sub-frame duration and a second sub-frame duration according to a position having the level conversion of the common-voltage signal, driving a first set of pixel units during the first sub-frame duration according to a level of the common-voltage signal within the first sub-frame duration, and driving a second set of pixel units during the second sub-frame duration according to a level of the common-voltage signal within the second sub-frame duration.
    Type: Application
    Filed: January 21, 2007
    Publication date: April 24, 2008
    Inventor: Ching-Wu Tseng
  • Publication number: 20070085588
    Abstract: An internal resistor device of an integrated circuit chip, including a MOS transistor and a logic unit, is provided. The MOS transistor has a drain coupled to an input pin of the integrated circuit chip and a source coupled to a predetermined voltage. The logic unit receives a control signal from the input pin and a driving signal, and then executes a logic operation of the driving and the control signals. The result of the logic operation is provided to the gate of the MOS transistor. When the input pin is floating, the internal resistor device provides a predetermined fixed voltage to internal circuits chip. When the input voltage level is inverse to the predetermined fixed voltage, static current is almost not consumed.
    Type: Application
    Filed: November 29, 2005
    Publication date: April 19, 2007
    Inventor: Ching-Wu Tseng
  • Publication number: 20070085792
    Abstract: A display device and a gray-scale voltage generating device for the display device are provided. The gray-scale voltage generating device includes a reference voltage source, a curve-shifting control unit, and a gray-scale voltage output unit. By correcting the output voltage of the curve-shifting control unit, the devices are able to shift the Gamma curve of the gray-scale voltage output unit. Therefore, the original Gamma curve can be shifted without having distortion.
    Type: Application
    Filed: January 5, 2006
    Publication date: April 19, 2007
    Inventor: Ching-Wu Tseng
  • Publication number: 20070075760
    Abstract: A latchable voltage level shifter is provided. The latchable voltage level shifter comprises: a voltage level shifter receiving an original input signal and generating a high voltage signal according to a timing sequence of a first phase control signal; and a high voltage flip-flop, coupled to the voltage level shifter, receiving the high voltage signal and a second phase control signal, the high voltage flip-flop latching the high voltage signal according to a timing sequence of the second phase control signal and outputting a high voltage output signal. The latchable voltage level shifter can be used in a source drive circuit so as to reduce the layout area and production cost.
    Type: Application
    Filed: August 31, 2006
    Publication date: April 5, 2007
    Inventors: CHING-WU TSENG, Alex Tang
  • Publication number: 20060267909
    Abstract: A gate switch apparatus of a-Si LCDs is provided. The gate switch apparatus is suitable for switching a plurality of sub gate lines and disposed in two rim spaces of a display to make a-Si TFT switch with less impedance. According to a switch driving timing, a plurality of sub gate lines are able to share a single gate line, which saves cost and reduces the difficulty in the manufacturing process.
    Type: Application
    Filed: October 4, 2005
    Publication date: November 30, 2006
    Inventors: Chih-Hsin Hsu, Ching-Wu Tseng
  • Publication number: 20060244736
    Abstract: A touch screen liquid crystal display (LCD) device is provided. In its design, a LCD panel and an input panel are integrated, to prevent damages or impurity contamination in the manufacturing and assembly process of the LCD, further to spare the additional analog-to digital converter and control circuit. With the driving method of the present invention, the touch screen LCD device with integrated display and input function doesn't affect the original LCD display function. Moreover, the simple on/off driving mode also enhances the resolution requirement of the touch screen LCD.
    Type: Application
    Filed: July 28, 2005
    Publication date: November 2, 2006
    Inventor: Ching-Wu Tseng
  • Patent number: 7071758
    Abstract: A voltage level shifter is provided. The shifter includes an AND gate for generating a synchronizing signal according to a periodic signal and a primitive input signal. The synchronizing signal and a first periodic control signal that are in phase with the periodic control signal are inputted to a transistor device. The transistor device is constructed with an inverter. The voltage level shifter further includes a buffer for generating an output signal and a capacitor for storing a signal. The present invention also provides a switching circuit for preventing the turning on of both PMOS transistor and NMOS transistor simultaneously during a switching status. The present invention can also solve the issue caused by the ratio of the channel width to the channel length, thus the uncertainty of the manufacturing process will not affect the circuit. Therefore, the power consumption, the chip area and the cost are reduced.
    Type: Grant
    Filed: February 11, 2004
    Date of Patent: July 4, 2006
    Assignee: Novatek Microelectronics Corp.
    Inventors: Ching-Wu Tseng, Alex Tang
  • Publication number: 20060132475
    Abstract: A gate driving device comprises a control circuit, a shift register circuit, a level shifter, a buffer block and a current overdrive protection device. The control circuit receives and outputs the logic control signals. The shift register circuit receives the logic control signals and sequentially outputs N horizontal low-voltage pulse signals from the first to Nth horizontal lines. The level shifter receives and transforms the horizontal low-voltage pulse signals into positive/negative high-voltage signals. The buffer block receives the horizontal positive/negative high-voltage signals and buffers the driving of the output level device. The current overdrive protection device receives the logic control signal and the horizontal low-voltage pulse signals. The current overdrive protection device, while being properly triggered, outputs the reset signal to prevent the sudden current spike. Accordingly, the damage of the gate driving device is avoided.
    Type: Application
    Filed: July 27, 2005
    Publication date: June 22, 2006
    Inventor: Ching-Wu Tseng
  • Publication number: 20050195011
    Abstract: A latchable voltage level shifter is provided. The latchable voltage level shifter comprises: a voltage level shifter receiving an original input signal and generating a high voltage signal according to a timing sequence of a first phase control signal; and a high voltage flip-flop, coupled to the voltage level shifter, receiving the high voltage signal and a second phase control signal, the high voltage flip-flop latching the high voltage signal according to a timing sequence of the second phase control signal and outputting a high voltage output signal. The latchable voltage level shifter can be used in a source drive circuit so as to reduce the layout area and production cost.
    Type: Application
    Filed: April 19, 2004
    Publication date: September 8, 2005
    Inventors: Ching-Wu Tseng, Alex Tang
  • Publication number: 20050083100
    Abstract: A voltage level shifter is provided. The shifter includes an AND gate for generating a synchronizing signal according to a periodic signal and a primitive input signal. The synchronizing signal and a first periodic control signal that are in phase with the periodic control signal are inputted to a transistor device. The transistor device is constructed with an inverter. The voltage level shifter further includes a buffer for generating an output signal and a capacitor for storing a signal. The present invention also provides a switching circuit for preventing the turning on of both PMOS transistor and NMOS transistor simultaneously during a switching status. The present invention can also solve the issue caused by the ratio of the channel width to the channel length, thus the uncertainty of the manufacturing process will not affect the circuit. Therefore, the power consumption, the chip area and the cost are reduced.
    Type: Application
    Filed: February 11, 2004
    Publication date: April 21, 2005
    Inventors: Ching-Wu Tseng, Alex Tang