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).

  • Publication number: 20210389863
    Abstract: The present invention provides a method of controlling a display panel having a sensing area and a non-sensing area. The sensing area includes a plurality of fingerprint sensing pixels, each of which is coupled to at least one control line. The non-sensing area includes a plurality of dummy pixels, each of which is coupled to at least one dummy line. The method includes steps of: applying a control signal on a first control line among the at least one control line or configuring the first control line to be floating, and applying a first anti-loading driving (ALD) signal corresponding to the control signal on a first dummy line among the at least one dummy line or configuring the first dummy line to be floating.
    Type: Application
    Filed: March 25, 2021
    Publication date: December 16, 2021
    Inventors: Yi-Ying Lin, Chih-Chang Lai
  • Publication number: 20210278920
    Abstract: A touch integrated display device includes a substrate, at one metal layer, a touch sensor and trace layer, and a shielding layer. The substrate includes an active area and a fan out area neighbouring to the active area. The metal layer is disposed over the substrate in the active area, extended to the fan out area and includes a plurality of source lines and a plurality of gate lines. The touch sensor and trace layer is disposed over the metal layer in the active area and extended to the fan out area. The shielding layer is at least disposed at an overlap region of the fan out area where the metal layer and the touch sensor and trace layer are overlapped from a top view to shield electromagnetic interference between the metal layer and the touch sensor and trace layer.
    Type: Application
    Filed: January 11, 2021
    Publication date: September 9, 2021
    Applicant: Novatek Microelectronics Corp.
    Inventors: Yu-Ying Tang, Ching-Yang Pai, Chih-Chang Lai
  • Publication number: 20210157439
    Abstract: A touch sensing device and a driving method for driving the touch sensing device are provided. The touch sensing device includes a plurality of electrodes and a driving circuit. The electrodes includes a touch sensing electrode and a force sensing electrode. During a touch sensing driving period, the driving circuit provides a first driving signal to one of the touch sensing electrode and the force sensing electrode, provides a second driving signal to another one of the touch sensing electrode and the force sensing electrode or controls the another one of the touch sensing electrode and the force sensing electrode to enter a floating state.
    Type: Application
    Filed: May 27, 2020
    Publication date: May 27, 2021
    Applicant: Novatek Microelectronics Corp.
    Inventors: Yi-Ying Lin, Chih-Chang Lai
  • Patent number: 10908752
    Abstract: A display panel includes a common electrode layer and a touch sensor. The common electrode layer has a conductive material. The touch sensor, disposed over the common electrode layer, includes a plurality of touch sensing electrodes and a plurality of conductive lines. Each of the plurality of conductive lines is coupled to at least one of the plurality of touch sensing electrodes. Wherein, the conductive material in an area of the common electrode layer overlapping a part of the plurality of conductive lines is removed.
    Type: Grant
    Filed: May 12, 2020
    Date of Patent: February 2, 2021
    Assignee: NOVATEK Microelectronics Corp.
    Inventors: Yu-Ying Tang, Chih-Chang Lai, Ching-Yang Pai
  • Patent number: 10895927
    Abstract: A touch display device including a drive chip and a touch display panel is provided. The drive chip includes a first common voltage source and a second common voltage source. The touch display panel includes a plurality of touch electrode including a plurality of rows and columns, wherein the number of columns is odd-numbered. The touch display panel includes a middle column, a first region and a second region. The middle column is interposed between the first region and the second region having the same number of touch electrodes. The touch electrodes in the first region and that in the second region are coupled to the first common voltage source and the second common voltage source respectively. The middle column is divided into a first half and a second half by a reference line. The first half and the second half have the same number of touch electrodes.
    Type: Grant
    Filed: December 4, 2019
    Date of Patent: January 19, 2021
    Assignee: NOVATEK MICROELECTRONICS CORP.
    Inventors: Yi-Ying Lin, Chih-Chang Lai
  • Patent number: 10852882
    Abstract: A fingerprint sensing control method for sensing one or more sensing signals from a fingerprint sensing device having a plurality of sensing areas, each of the sensing areas having a plurality of sensing units, the sensing control method includes determining a sensitivity of the fingerprint sensing device; and obtaining the one or more the fingerprint sensing signals from the fingerprint sensing device, wherein one or more of the plurality of sensing units are grouped so as to achieve the sensitivity, and for a first sensitivity of the sensing device, a first number of one or more sensing units are grouped, and for a second sensitivity of the fingerprint sensing device, a second number of one or more sensing units are grouped, and the second sensitivity is greater than the first sensitivity and the second number is greater than the first number.
    Type: Grant
    Filed: October 13, 2019
    Date of Patent: December 1, 2020
    Assignee: NOVATEK Microelectronics Corp.
    Inventors: Chih-Chang Lai, Kuan-Yi Yang, Jer-Hao Hsu
  • Publication number: 20200348785
    Abstract: A touch display panel including a substrate, a first touch sensor layer and a display electrode layer is provided. The first touch sensor layer is disposed on the substrate and patternized into a plurality of blocks for serving as a plurality of first touch sensor electrodes. The first touch sensor electrodes are grouped into a plurality of touch sensor units. Each touch sensor unit includes one or more first touch sensor electrodes. At least one first touch sensor electrode of each touch sensor unit serves as a transmitting electrode during a touch sensing period. The display electrode layer is disposed between the substrate and the first touch sensor layer and patternized into a plurality of blocks for serving as a plurality of display electrodes. The display electrodes are grouped into a plurality of display units. Each display unit includes one or more display electrodes. Each display unit is respectively corresponding to a touch sensor unit of the plurality of touch sensor units.
    Type: Application
    Filed: April 21, 2020
    Publication date: November 5, 2020
    Applicant: Novatek Microelectronics Corp.
    Inventors: Yu-Ying Tang, Chih-Chang Lai
  • Publication number: 20200272329
    Abstract: An electronic device controlling a touch panel and performing a proximity sensing method is provided. The electronic device includes a touch controller. The touch controller is configured to group a plurality of touch sensors into a sensing group of one or more touch sensors and a non-sensing group of one or more touch sensors, control the sensing group to perform a proximity or hover sensing operation during a first sensing period and not control the non-sensing group to perform the proximity or hover sensing operation during the first sensing period, set one or more first touch sensors of the non-sensing group to a floating state during the first sensing period, and set one or more second touch sensors of the non-sensing group to a simultaneously-driven state during the first sensing period.
    Type: Application
    Filed: February 21, 2020
    Publication date: August 27, 2020
    Applicant: Novatek Microelectronics Corp.
    Inventors: Yu-Ying Tang, Ching-Yang Pai, Chih-Chang Lai
  • Publication number: 20200257427
    Abstract: A sensor system includes a sensing panel, at least one multiplexer and a controller. The sensing panel includes one or more sensing areas . The multiplexer is coupled to the one or more sensing areas through one or more connecting wire groups on the sensing panel, wherein each of the connecting wire groups includes one or more connecting wires. The controller is coupled to the at least one multiplexer via one or more control wires and one or more sensing wires. Each of the at least one multiplexer includes one or more switch groups each coupled between one of the one or more sensing wires and one of the connecting wire groups, and each of the switch groups includes one or more switches respectively controlled by one or more control signals transmitted through the one or more control wires.
    Type: Application
    Filed: April 27, 2020
    Publication date: August 13, 2020
    Inventors: Chih-Chang Lai, Chih-Yuan Chang
  • Publication number: 20200233515
    Abstract: A touch display device including a drive chip and a touch display panel is provided. The drive chip includes a first common voltage source and a second common voltage source. The touch display panel includes a plurality of touch electrode including a plurality of rows and columns, wherein the number of columns is odd-numbered. The touch display panel includes a middle column, a first region and a second region. The middle column is interposed between the first region and the second region having the same number of touch electrodes. The touch electrodes in the first region and that in the second region are coupled to the first common voltage source and the second common voltage source respectively. The middle column is divided into a first half and a second half by a reference line. The first half and the second half have the same number of touch electrodes.
    Type: Application
    Filed: December 4, 2019
    Publication date: July 23, 2020
    Inventors: Yi-Ying LIN, Chih-Chang LAI
  • Patent number: 10678369
    Abstract: A touch sensor system includes a touch panel, at least one multiplexer and a touch controller. The touch panel includes one or more touch sensing areas. The at least one multiplexer is coupled to the one or more touch sensing areas through one or more connecting wire groups on the touch panel, wherein each of the connecting wire groups includes one or more connecting wires. The touch controller is coupled to the at least one multiplexer via one or more touch control wires and one or more touch sensing wires. Each of the at least one multiplexer includes one or more switch groups each coupled between one of the one or more touch sensing wires and one of the connecting wire groups, and each of the switch groups includes one or more switches respectively controlled by one or more control signals transmitted through the one or more touch control wires.
    Type: Grant
    Filed: July 31, 2018
    Date of Patent: June 9, 2020
    Assignee: NOVATEK Microelectronics Corp.
    Inventors: Chih-Chang Lai, Chih-Yuan Chang
  • Publication number: 20200042138
    Abstract: A fingerprint sensing control method for sensing one or more sensing signals from a fingerprint sensing device having a plurality of sensing areas, each of the sensing areas having a plurality of sensing units, the sensing control method includes determining a sensitivity of the fingerprint sensing device; and obtaining the one or more the fingerprint sensing signals from the fingerprint sensing device, wherein one or more of the plurality of sensing units are grouped so as to achieve the sensitivity, and for a first sensitivity of the sensing device, a first number of one or more sensing units are grouped, and for a second sensitivity of the fingerprint sensing device, a second number of one or more sensing units are grouped, and the second sensitivity is greater than the first sensitivity and the second number is greater than the first number.
    Type: Application
    Filed: October 13, 2019
    Publication date: February 6, 2020
    Inventors: Chih-Chang Lai, Kuan-Yi Yang, Jer-Hao Hsu
  • Patent number: 10474288
    Abstract: A touch control method for sensing one or more touch signals from a touch device having a plurality of sensing areas, each of the sensing areas having a plurality of touch units, the touch control method includes determining a sensitivity of the touch device; and sensing the one or more the touch signals from the touch device, wherein one or more of the plurality of touch units located in the same sensing area are grouped so as to achieve the sensitivity, and for a first sensitivity of the touch device, a first number of touch units are grouped in the same sensing area, and for a second sensitivity of the touch device, a second number of touch units are grouped in the same sensing area, and the second sensitivity is greater than the first sensitivity and the second number is greater than the first number.
    Type: Grant
    Filed: May 15, 2018
    Date of Patent: November 12, 2019
    Assignee: NOVATEK Microelectronics Corp.
    Inventors: Chih-Chang Lai, Kuan-Yi Yang, Jer-Hao Hsu
  • Patent number: 10459566
    Abstract: A touch display panel includes a first patterned metal layer and a second patterned metal layer. The first patterned metal layer includes a first signal line and one or more first segments. The second patterned metal layer is disposed above the first patterned metal layer and includes a second signal line and one or more second segments, wherein the one or more second segments are electrically connected to the one or more first segments such that the one or more first segments and the one or more second segments collectively form at least a part of a touch sensing line.
    Type: Grant
    Filed: May 26, 2017
    Date of Patent: October 29, 2019
    Assignee: NOVATEK MICROELECTRONICS CORP.
    Inventors: Yu-Ying Tang, Chih-Chang Lai
  • Patent number: 10331257
    Abstract: A touch panel and a method for arranging electrodes of the touch panel are provided. The touch panel includes a plurality of touch sections. Each of the touch sections includes a first transmitter electrode, a first receiver electrode, a second transmitter electrode, a second receiver electrode, and a third receiver electrode. The first transmitter electrode has a first side and a second side opposite to the first side. The first receiver electrode adjoins the first side. The second transmitter electrode has a third side and a fourth side opposite to the third side. The second receiver electrode adjoins the second side and the third side. The third receiver electrode adjoins the fourth side.
    Type: Grant
    Filed: June 16, 2015
    Date of Patent: June 25, 2019
    Assignee: Novatek Microelectronics Corp.
    Inventors: Chih-Chang Lai, Ching-Yang Pai
  • Publication number: 20180364857
    Abstract: A touch sensor system includes a touch panel, at least one multiplexer and a touch controller. The touch panel includes one or more touch sensing areas. The at least one multiplexer is coupled to the one or more touch sensing areas through one or more connecting wire groups on the touch panel, wherein each of the connecting wire groups includes one or more connecting wires. The touch controller is coupled to the at least one multiplexer via one or more touch control wires and one or more touch sensing wires. Each of the at least one multiplexer includes one or more switch groups each coupled between one of the one or more touch sensing wires and one of the connecting wire groups, and each of the switch groups includes one or more switches respectively controlled by one or more control signals transmitted through the one or more touch control wires.
    Type: Application
    Filed: July 31, 2018
    Publication date: December 20, 2018
    Inventors: Chih-Chang Lai, Chih-Yuan Chang
  • Publication number: 20180341361
    Abstract: A touch display panel includes a first patterned metal layer and a second patterned metal layer. The first patterned metal layer includes a first signal line and one or more first segments. The second patterned metal layer is disposed above the first patterned metal layer and includes a second signal line and one or more second segments, wherein the one or snore second segments are electrically connected to the one or more first segments such that the one or more first segments and the one or more second segments collectively form at least a part of a touch sensing line.
    Type: Application
    Filed: May 26, 2017
    Publication date: November 29, 2018
    Inventors: Yu-Ying Tang, Chih-Chang Lai
  • Publication number: 20180260075
    Abstract: A touch control method for sensing one or more touch signals from a touch device having a plurality of sensing areas, each of the sensing areas having a plurality of touch units, the touch control method includes determining a sensitivity of the touch device; and sensing the one or more the touch signals from the touch device, wherein one or more of the plurality of touch units located in the same sensing area are grouped so as to achieve the sensitivity, and for a first sensitivity of the touch device, a first number of touch units are grouped in the same sensing area, and for a second sensitivity of the touch device, a second number of touch units are grouped in the same sensing area, and the second sensitivity is greater than the first sensitivity and the second number is greater than the first number.
    Type: Application
    Filed: May 15, 2018
    Publication date: September 13, 2018
    Inventors: Chih-Chang Lai, Kuan-Yi Yang, Jer-Hao Hsu
  • Publication number: 20180239488
    Abstract: The disclosure provides a method of driving a touch panel. The touch panel includes a plurality of touch sensing electrodes and a plurality of display pixels. Each of the plurality of display pixels includes a light emission element and a driving transistor. Each of the touch sensing electrodes is coupled to the light emission element of at least one of the plurality of display pixels. The method includes transmitting a first driving signal to at least one of the touch sensing electrodes served as an electrode of the corresponding light emission element during a touch sensing period, wherein the touch sensing electrode is coupled to a first power receiving terminal of the corresponding display pixel; and transmitting a first power supply voltage to the first power receiving terminal during a display period.
    Type: Application
    Filed: November 30, 2017
    Publication date: August 23, 2018
    Inventors: Yi-Ying Lin, Chih-Chang Lai
  • Patent number: 10055049
    Abstract: A touch sensor system includes a touch panel having a plurality of touch sensing areas, at least one multiplexer and a touch controller. The touch controller, for controlling touch driving and sensing on the touch panel, includes a plurality of pins connected to the multiplexer via a plurality of touch control wires and touch sensing wires, wherein each of the pins is connected to one of the touch control wires or touch sensing wires. Each of the touch sensing wires transmits driving signals from the touch controller to a corresponding multiplexer to perform driving on one of the touch sensing areas, and transmits sensing signals from the touch sensing area to the touch controller. The touch controller controls the multiplexer to perform touch driving and sensing on the touch sensing areas in a specific order by triggering the touch control wires in an order.
    Type: Grant
    Filed: December 9, 2015
    Date of Patent: August 21, 2018
    Assignee: NOVATEK Microelectronics Corp.
    Inventors: Chih-Chang Lai, Chih-Yuan Chang