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).
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Publication number: 20210389863Abstract: 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: ApplicationFiled: March 25, 2021Publication date: December 16, 2021Inventors: Yi-Ying Lin, Chih-Chang Lai
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Publication number: 20210278920Abstract: 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: ApplicationFiled: January 11, 2021Publication date: September 9, 2021Applicant: Novatek Microelectronics Corp.Inventors: Yu-Ying Tang, Ching-Yang Pai, Chih-Chang Lai
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Publication number: 20210157439Abstract: 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: ApplicationFiled: May 27, 2020Publication date: May 27, 2021Applicant: Novatek Microelectronics Corp.Inventors: Yi-Ying Lin, Chih-Chang Lai
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Patent number: 10908752Abstract: 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: GrantFiled: May 12, 2020Date of Patent: February 2, 2021Assignee: NOVATEK Microelectronics Corp.Inventors: Yu-Ying Tang, Chih-Chang Lai, Ching-Yang Pai
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Patent number: 10895927Abstract: 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: GrantFiled: December 4, 2019Date of Patent: January 19, 2021Assignee: NOVATEK MICROELECTRONICS CORP.Inventors: Yi-Ying Lin, Chih-Chang Lai
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Patent number: 10852882Abstract: 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: GrantFiled: October 13, 2019Date of Patent: December 1, 2020Assignee: NOVATEK Microelectronics Corp.Inventors: Chih-Chang Lai, Kuan-Yi Yang, Jer-Hao Hsu
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Publication number: 20200348785Abstract: 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: ApplicationFiled: April 21, 2020Publication date: November 5, 2020Applicant: Novatek Microelectronics Corp.Inventors: Yu-Ying Tang, Chih-Chang Lai
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Publication number: 20200272329Abstract: 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: ApplicationFiled: February 21, 2020Publication date: August 27, 2020Applicant: Novatek Microelectronics Corp.Inventors: Yu-Ying Tang, Ching-Yang Pai, Chih-Chang Lai
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Publication number: 20200257427Abstract: 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: ApplicationFiled: April 27, 2020Publication date: August 13, 2020Inventors: Chih-Chang Lai, Chih-Yuan Chang
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Publication number: 20200233515Abstract: 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: ApplicationFiled: December 4, 2019Publication date: July 23, 2020Inventors: Yi-Ying LIN, Chih-Chang LAI
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Patent number: 10678369Abstract: 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: GrantFiled: July 31, 2018Date of Patent: June 9, 2020Assignee: NOVATEK Microelectronics Corp.Inventors: Chih-Chang Lai, Chih-Yuan Chang
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Publication number: 20200042138Abstract: 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: ApplicationFiled: October 13, 2019Publication date: February 6, 2020Inventors: Chih-Chang Lai, Kuan-Yi Yang, Jer-Hao Hsu
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Patent number: 10474288Abstract: 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: GrantFiled: May 15, 2018Date of Patent: November 12, 2019Assignee: NOVATEK Microelectronics Corp.Inventors: Chih-Chang Lai, Kuan-Yi Yang, Jer-Hao Hsu
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Patent number: 10459566Abstract: 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: GrantFiled: May 26, 2017Date of Patent: October 29, 2019Assignee: NOVATEK MICROELECTRONICS CORP.Inventors: Yu-Ying Tang, Chih-Chang Lai
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Patent number: 10331257Abstract: 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: GrantFiled: June 16, 2015Date of Patent: June 25, 2019Assignee: Novatek Microelectronics Corp.Inventors: Chih-Chang Lai, Ching-Yang Pai
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Publication number: 20180364857Abstract: 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: ApplicationFiled: July 31, 2018Publication date: December 20, 2018Inventors: Chih-Chang Lai, Chih-Yuan Chang
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Publication number: 20180341361Abstract: 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: ApplicationFiled: May 26, 2017Publication date: November 29, 2018Inventors: Yu-Ying Tang, Chih-Chang Lai
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Publication number: 20180260075Abstract: 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: ApplicationFiled: May 15, 2018Publication date: September 13, 2018Inventors: Chih-Chang Lai, Kuan-Yi Yang, Jer-Hao Hsu
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Publication number: 20180239488Abstract: 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: ApplicationFiled: November 30, 2017Publication date: August 23, 2018Inventors: Yi-Ying Lin, Chih-Chang Lai
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Patent number: 10055049Abstract: 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: GrantFiled: December 9, 2015Date of Patent: August 21, 2018Assignee: NOVATEK Microelectronics Corp.Inventors: Chih-Chang Lai, Chih-Yuan Chang