Patents by Inventor Chih-Chang Lai

Chih-Chang Lai 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).

  • Patent number: 8963851
    Abstract: A moving point gesture determination method is disclosed for a touch sense device mapped to a screen according to absolute position. The moving point gesture determination method includes steps of comparing one or more signal values of one or more detecting signals generated by the touch sense device with one or more threshold values, to determine whether any touch event occurs, and determining that a moving point gesture occurs once the determination indicates that a touch event occurs.
    Type: Grant
    Filed: July 27, 2011
    Date of Patent: February 24, 2015
    Assignee: NOVATEK Microelectronics Corp.
    Inventors: Hui-Hung Chang, Chun-Chieh Chang, Chih-Chang Lai
  • Patent number: 8963008
    Abstract: An electrode structure of a capacitive touch panel is provided, which includes a plurality of receiving electrodes and a plurality of driving electrodes. Each of the receiving electrodes has a hexagonal electrode structure. Each of the driving electrodes includes a main region. Each of the main regions has a quadrilateral electrode structure. The area of each driving electrode is larger than that of each receiving electrode. By using the foregoing electrode structure, the capacitive touch panel can not only provide sensing signals with less noise but also increase the intensity of input signals to enhance the signal to noise ratio.
    Type: Grant
    Filed: November 19, 2012
    Date of Patent: February 24, 2015
    Assignee: Novatek Microelectronics Corp.
    Inventors: Chih-Chang Lai, Shih-Ming Lin, Chih-Peng Hsia
  • Publication number: 20150029134
    Abstract: A driving and sensing method for a single-layer mutual capacitive multi-touch screen includes inputting a first driving signal to a plurality of touch sensing electrodes along a first direction and receiving a first sensing signal corresponding to the first driving signal along the first direction; and inputting a second driving signal to the plurality of touch sensing electrodes along a second direction and receiving a second sensing signal corresponding to the second driving signal along the second direction; wherein the second direction is substantially perpendicular to the first direction. The plurality of touch sensing electrodes are disposed in the single-layer mutual capacitive multi-touch screen, and each of the plurality of touch sensing electrodes includes at least one driving area and at least one receiving area, wherein all driving areas and receiving areas are located in a same layer of the single-layer mutual capacitive multi-touch screen.
    Type: Application
    Filed: October 20, 2013
    Publication date: January 29, 2015
    Applicant: NOVATEK Microelectronics Corp.
    Inventors: PENG LIU, Chih-Chang Lai
  • Patent number: 8941598
    Abstract: A driving method adapted to a touch-sensing display apparatus is provided. The touch-sensing display apparatus includes a display panel and a touch panel. The driving method includes following steps. I scan signals are sequentially sent to drive the display panel to receive a plurality of data signals. M driving signals are sequentially sent to drive the touch panel to generate a plurality of sensing signals during a sensing period. The mth driving signal is synchronized with the ith scan signal, wherein 1?i?I and 1?m?M. The touch panel is delayed by a predetermined time period within each pulse width of the M driving signals for generating the sensing signals. Furthermore, a touch controller is also provided.
    Type: Grant
    Filed: January 7, 2011
    Date of Patent: January 27, 2015
    Assignee: Novatek Microelectronics Corp.
    Inventor: Chih-Chang Lai
  • Publication number: 20150022483
    Abstract: A touch display apparatus includes a display panel, a cover plate, a capacitive touch-sensing unit and an electromagnetic touch-sensing unit. The cover plate is disposed above the display panel. The capacitive touch-sensing unit is disposed between the cover plate and the display panel. The electromagnetic touch-sensing unit is disposed between the capacitive touch-sensing unit and the display panel. The capacitive touch-sensing unit and the electromagnetic touch-sensing unit are formed of a transparent conductive material.
    Type: Application
    Filed: September 9, 2013
    Publication date: January 22, 2015
    Applicant: Novatek Microelectronics Corp.
    Inventors: Chih-Chang Lai, Tien-Nan Wang
  • Patent number: 8922504
    Abstract: Disclosed is a click gesture determination method for a touch control chip capable of simply and flexibly determining a single click gesture. The click gesture determination method includes steps of comparing one or more signal values of one or more detecting signals with one or more threshold values, to determine whether a touch event occurs, continuing the above comparing if a touch event occurs, to detect a continuous occurrence time of the touch event, and comparing the continuous occurrence time with a first predefined time, and determining that a single click gesture occurs for a result of the comparison that the continuous occurrence time is longer than the first predefined time.
    Type: Grant
    Filed: April 25, 2011
    Date of Patent: December 30, 2014
    Assignee: NOVATEK Microelectronics Corp.
    Inventors: Chun-Chieh Chang, Chih-Chang Lai
  • Publication number: 20140368750
    Abstract: A single-layer mutual capacitive touch screen includes a substrate; a control circuit, disposed at a side of the substrate; a plurality of touch sensing electrodes, arranged on the substrate in an N×M array and classified into a first group and a second group; a plurality of output pins, for connecting the control circuit to the plurality of touch sensing electrodes; and a plurality of driving wires, each connecting a touch sensing electrode and an output pin. In the first group, each touch sensing electrode located at odd columns of the N×M array substantially shares an output pin with an adjacent touch sensing electrode located in a first direction of the touch sensing electrode. In the second group, each touch sensing electrode located at even columns of the N×M array substantially shares an output pin with an adjacent touch sensing electrode located in the first direction of the touch sensing electrode.
    Type: Application
    Filed: November 6, 2013
    Publication date: December 18, 2014
    Applicant: NOVATEK Microelectronics Corp.
    Inventors: Jian-Cheng Liao, Chih-Chang Lai
  • Publication number: 20140354575
    Abstract: A touch-sensing display device includes a display panel, a touch panel, a driver unit, and a flexible printed circuit board. The touch panel is disposed on the display panel, and the driver unit is disposed on the display panel to provide driving signals and drive the display panel and the touch panel. The flexible printed circuit board connects the display panel to a system main board.
    Type: Application
    Filed: August 14, 2014
    Publication date: December 4, 2014
    Inventors: WEN-CHUN WANG, CHIH-CHANG LAI, TING-YU CHANG, CHIN-CHANG LIU
  • Publication number: 20140306925
    Abstract: A sensing method for a touch panel is disclosed. The touch panel includes a plurality of sensing lines and a plurality of driving lines. The sensing method includes generating an electromagnetic signal or a capacitive signal; forming a plurality of first loops through the plurality of sensing lines to sense X coordinate of the electromagnetic signal on the touch panel and forming a plurality of second loops through the plurality of driving lines to sense Y coordinate of the electromagnetic signal on the touch panel when the electromagnetic signal is generated; sensing X coordinate of the capacitive signal through the plurality of sensing lines and sensing Y coordinate of the capacitive signal through the plurality of driving lines when the capacitive signal is generated.
    Type: Application
    Filed: September 26, 2013
    Publication date: October 16, 2014
    Applicant: NOVATEK Microelectronics Corp.
    Inventors: Yun-Hsiang Yeh, Chih-Chang Lai
  • Patent number: 8836650
    Abstract: A touch-sensing display device includes a display panel, a touch panel, a driver unit, and a flexible printed circuit board. The touch panel is disposed on the display panel, and the driver unit is disposed on the display panel to provide driving signals and drive the display panel and the touch panel. The flexible printed circuit board connects the display panel to a system main board.
    Type: Grant
    Filed: January 13, 2011
    Date of Patent: September 16, 2014
    Assignee: Wintek Corporation
    Inventors: Wen-Chun Wang, Chih-Chang Lai, Ting-Yu Chang, Chin-Chang Liu
  • Publication number: 20140247244
    Abstract: A capacitive touch screen includes a plurality of touch sensing electrodes and a touch controller. Each of the plurality of touch sensing electrodes includes at least one driving area and at least one receiving area. The at least one driving area and the at least one receiving area are located in a same layer of the capacitive touch screen. The touch controller, electrically connected to the at least one driving area and the at least one receiving area in the plurality of touch sensing electrodes, is utilized for scanning the at least one driving area in order and detecting signals received by the at least one receiving area, or scanning the at least one receiving area in order and detecting signals received by the at least one driving area.
    Type: Application
    Filed: August 14, 2013
    Publication date: September 4, 2014
    Applicant: NOVATEK Microelectronics Corp.
    Inventors: Shun-Li Wang, Chih-Chang Lai, He-Wei Huang
  • Publication number: 20140198078
    Abstract: A transparent capacitive touch panel comprising a transparent substrate, a transparent cover lens and a transparent adhesive layer is provided, wherein a first transparent electrode layer and a second transparent electrode layer are disposed on the transparent cover lens and the transparent substrate respectively. The transparent adhesive layer is used to bind the first transparent electrode layer and second transparent electrode layer in order to combine the transparent cover lens and the transparent substrate disposed in parallel. Thereby, the manufacturing process of the transparent capacitive touch panel is simplified, and the manufacturing cost of the same is lowered.
    Type: Application
    Filed: March 17, 2014
    Publication date: July 17, 2014
    Applicant: Wintek Corporation
    Inventors: JASON WU, YEN- CHUNG HUNG, RUEY-SHING WENG, CHIH-CHANG LAI
  • Publication number: 20140192010
    Abstract: A capacitive touch panel is disclosed to include a plurality of sensing channels disposed along a first direction and a second direction, respectively, and including a plurality of sensing modules. Each of the plurality of sensing modules includes a sensing unit and a plurality of dummy units being separately disposed to form a plurality of boundaries. A plurality of extension rays of the plurality of boundaries, the first direction and the second direction are interlaced to form a plurality of angles being in the range from zero degrees to ninety degrees or from ninety degrees to a hundred and eighty degrees. A plurality of connecting units is disposed along the first direction and the second direction for connecting the plurality of sensing modules. The first direction is perpendicular to the second direction and the plurality of sensing channels is perpendicular to each other on a projective plane.
    Type: Application
    Filed: August 13, 2013
    Publication date: July 10, 2014
    Applicant: NOVATEK Microelectronics Corp.
    Inventors: Chih-Chang Lai, Shih-Ming Lin
  • Publication number: 20140192009
    Abstract: A touch panel comprising a substrate, a plurality of first sensing electrodes, a plurality of second sensing electrodes, an insulating layer and a cover lens is provided. The first sensing electrodes are disposed on the substrate and are arranged in a first direction. The second sensing electrodes are disposed on the substrate and are arranged in a second direction. The first direction and the second directions are different. The insulating layer is disposed between the first and the second sensing electrodes. The cover lens is disposed on the insulating layer and has a non-uniform thickness. At least one of the surface areas of the first and the second sensing electrodes is related to the non-uniform thickness of the cover lens.
    Type: Application
    Filed: June 28, 2013
    Publication date: July 10, 2014
    Inventors: Chih-Chang LAI, Ta-Keng WENG
  • Publication number: 20140184939
    Abstract: A touch structure is provided. The touch structure includes a first sensing electrode, a second sensing electrode, a first dummy pattern and a second dummy pattern. The first sensing electrode and the second sensing electrode are arranged in a staggered manner and electrically insulated from each other. The first dummy pattern is adjacent to the first sensing electrode and has a first pattern acute angle. The second dummy pattern is adjacent to the second sensing electrode and has a second pattern acute angle. The first dummy pattern and the second dummy pattern are separated from each other. The first pattern acute angle and the second pattern acute angle are faced toward the same overlapped portion between the first sensing electrode and the second sensing electrode substantially.
    Type: Application
    Filed: July 17, 2013
    Publication date: July 3, 2014
    Applicant: Novatek Microelectronics Corp.
    Inventors: Chih-Chang LAI, Chi-Te LIN, Tien-Nan WANG, He-Wei HUANG, Yu-Sheng LAI
  • Patent number: 8743074
    Abstract: A transparent capacitive touch panel comprising a transparent substrate, a transparent cover lens and a transparent adhesive layer is provided, wherein a first transparent electrode layer and a second transparent electrode layer are disposed on the transparent cover lens and the transparent substrate respectively. The transparent adhesive layer is used to bind the first transparent electrode layer and second transparent electrode layer in order to combine the transparent cover lens and the transparent substrate disposed in parallel. Thereby, the manufacturing process of the transparent capacitive touch panel is simplified, and the manufacturing cost of the same is lowered.
    Type: Grant
    Filed: May 3, 2013
    Date of Patent: June 3, 2014
    Assignee: Wintek Corporation
    Inventors: Jason Wu, Yen-Chung Hung, Ruey-Shing Weng, Chih-Chang Lai
  • Patent number: 8698065
    Abstract: A photo sensing module is provided on a first substrate and includes a photo sensing device and a protection wiring. A gap exists between the photo sensing module and an external circuit, and the photo sensing device is provided on the first substrate. The protection wiring is electrically-conductive and located between the external circuit and at least a portion of the photo sensing device.
    Type: Grant
    Filed: March 4, 2010
    Date of Patent: April 15, 2014
    Assignee: Wintek Corporation
    Inventors: Wen-Chun Wang, Po-Hsien Wang, Chih-Chang Lai, Hsi-Rong Han
  • Publication number: 20140022468
    Abstract: A touch panel having a transparent region and a peripheral region surrounding the transparent region is provided. The touch panel includes a transparent cover, a touch device, a light-shielding layer, a layer of conductive lines, and a touch chip. The transparent cover has a touch surface and a device mounting surface opposite thereto. The touch device is disposed on the device mounting surface and at least located at the transparent region. The light-shielding layer is disposed on the transparent cover and located inside the peripheral region. The layer of conductive lines is disposed on the device mounting surface, located inside the peripheral region, and electrically connected to the touch device. The touch chip is disposed on the layer of conductive lines through a chip-on-glass process.
    Type: Application
    Filed: September 24, 2013
    Publication date: January 23, 2014
    Applicant: WINTEK CORPORATION
    Inventors: Chih-Chang Lai, Hsiao-Hui Liao, Yu-Hung Chang, Ping-Wen Huang, Ming-Kung Wu, Hsiao-Ping Li
  • Publication number: 20140022469
    Abstract: A touch panel having a transparent region and a peripheral region surrounding the transparent region is provided. The touch panel includes a transparent cover, a touch device, a light-shielding layer, a layer of conductive lines, and a touch chip. The transparent cover has a touch surface and a device mounting surface opposite thereto. The touch device is disposed on the device mounting surface and at least located at the transparent region. The light-shielding layer is disposed on the transparent cover and located inside the peripheral region. The layer of conductive lines is disposed on the device mounting surface, located inside the peripheral region, and electrically connected to the touch device. The touch chip is disposed on the layer of conductive lines through a chip-on-glass process.
    Type: Application
    Filed: September 24, 2013
    Publication date: January 23, 2014
    Applicant: WINTEK CORPORATION
    Inventors: Chih-Chang Lai, Hsiao-Hui Liao, Yu-Hung Chang, Ping-Wen Huang, Ming-Kung Wu, Hsiao-Ping Li
  • Publication number: 20140009436
    Abstract: A sense device for a capacitive touch control display is disclosed. The sense device includes a plurality of sense channels paralleled to each other, each of the sense channel including a first sense electrode having a first geometric figure for outputting a first sense signal, a second sense electrode having a second geometric figure for outputting a second sense signal, and a third sense electrode formed between the first sense electrode and the second sense electrode for outputting a third sense signal. An operation unit of the capacitive touch control display determines a plurality of touch positions according to the first sense signal, the second sense signal and the third sense signal.
    Type: Application
    Filed: January 8, 2013
    Publication date: January 9, 2014
    Applicant: NOVATEK Microelectronics Corp.
    Inventors: Chih-Chang Lai, Shun-Li Wang