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公开(公告)号：US12014564B2
公开(公告)日：2024-06-18
申请号：US17407133
申请日：2021-08-19
Applicant: Novatek Microelectronics Corp.
Inventor： Wei-Lun Shih , Wu Wei Lin , Kuei Jung Chen
CPC classification number: G06V40/13 , G06F3/0412 , G09G3/36 , G09G2300/0408 , G09G2310/0286
Abstract: An electronic circuit adapted to control an operation of a gate driver circuit is provided. The electronic circuit includes a gate control circuit. The gate control circuit outputs control signals to the gate driver circuit in a display period and a fingerprint sensing period via the same output nodes. The control signals include a start pulse signal and a switch control signal. The switch control signal controls the gate driver circuit to operate in the display period or the fingerprint sensing period. The gate driver circuit includes a plurality of shift register groups and a switch circuit. The shift register groups output scan signals according to the start pulse signal. The switch circuit receives and outputs the scan signals to display scan lines in the display period and outputs the scan signals to fingerprint scan lines in the fingerprint sensing period according to the switch control signal.
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公开(公告)号：US11961584B2
公开(公告)日：2024-04-16
申请号：US17859010
申请日：2022-07-07
Applicant: Novatek Microelectronics Corp.
Inventor： Wu Wei Lin
CPC classification number: G11C7/1069 , G11C7/1006 , G11C7/1039 , G11C7/14
Abstract: The present invention provides a readout integrated circuit and an operation method thereof. The readout integrated circuit includes a readout circuit, a line buffer and a communication interface circuit. The readout circuit reads out a plurality of row sensing results of a plurality of sensor rows of a sensor. The line buffer is coupled to the readout circuit for temporarily storing a current row sensing result of a current sensor row of the sensor. The communication interface circuit is coupled to the line buffer. After the current row sensing result of the current sensor row is temporarily stored into the line buffer, the communication interface circuit outputs the current row sensing result in real time to a host circuit.
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3.发明授权公开(公告)号：US11450132B2
公开(公告)日：2022-09-20
申请号：US17216705
申请日：2021-03-30
Applicant: Novatek Microelectronics Corp.
Inventor： Wei-Lun Shih , Wu Wei Lin , Ting-Hsuan Hung , Wen-Yi Hsieh
Abstract: In the invention, a fingerprint driving circuit, a fingerprint sensing device, an electronic apparatus, and an operation method of the fingerprint sensing device are provided. By keeping fingerprint sensing lines in a non-fingerprint sensing region in an electrically non-floating state, flash phenomenon in a display panel may be avoided.
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公开(公告)号：US20210224548A1
公开(公告)日：2021-07-22
申请号：US17155116
申请日：2021-01-22
Applicant: Novatek Microelectronics Corp.
Inventor： Wei-Lun Shih , Wu Wei Lin
Abstract: A driving device and an operation method thereof are provided. The driving device includes a first driving circuit and a second driving circuit. The first driving circuit performs a display driving operation to a display panel. The second driving circuit performs a fingerprint sensing operation (including a sensor reset operation and an image capture operation) to the display panel according to a timing control signal of the first driving circuit. The fingerprint sensing operation is operated with a same frame polarity configuration rule. The operation of “the same frame polarity configuration rule” comprises fixing a relation between a first polarity configuration (which is the frame polarity configuration of the display panel when performing the sensor reset operation on a same fingerprint frame) and a second polarity configuration (which is the frame polarity configuration of the display panel when performing the image capture operation on the same fingerprint frame) whenever the fingerprint sensing operation is performed.
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公开(公告)号：US11615640B2
公开(公告)日：2023-03-28
申请号：US17155116
申请日：2021-01-22
Applicant: Novatek Microelectronics Corp.
Inventor： Wei-Lun Shih , Wu Wei Lin
Abstract: A driving device and an operation method thereof are provided. The driving device includes a first driving circuit and a second driving circuit. The first driving circuit performs a display driving operation to a display panel. The second driving circuit performs a fingerprint sensing operation (including a sensor reset operation and an image capture operation) to the display panel according to a timing control signal of the first driving circuit. The fingerprint sensing operation is operated with a same frame polarity configuration rule. The operation of “the same frame polarity configuration rule” comprises fixing a relation between a first polarity configuration (which is the frame polarity configuration of the display panel when performing the sensor reset operation on a same fingerprint frame) and a second polarity configuration (which is the frame polarity configuration of the display panel when performing the image capture operation on the same fingerprint frame) whenever the fingerprint sensing operation is performed.
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Patent Agency Ranking
公开(公告)号：US11244137B2
公开(公告)日：2022-02-08
申请号：US17110331
申请日：2020-12-03
Applicant: Novatek Microelectronics Corp.
Inventor： Kuei-Chung Chang , Wu Wei Lin
Abstract: A fingerprint sensing control device and an operation method thereof are provided. The fingerprint sensing control device includes a touch control circuit and a fingerprint sensing control circuit. The touch control circuit determines a touched region of an object on the touch panel. The fingerprint sensing control circuit performs a fingerprint sensing control on the touch panel and determines a target sensing sub-region overlaid by the touched region from a plurality of sensing sub-regions of the fingerprint sensing region of the touch panel. When the target sensing sub-region comprises a first sensing sub-region and a second sensing sub-region that are adjacent to each other, the fingerprint sensing control circuit starts to scan the first sensing sub-region in a first direction from a common edge between the first sensing sub-region and the second sensing sub-region and starts to scan the second sensing sub-region in a second direction from the common edge.
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公开(公告)号：US20220092287A1
公开(公告)日：2022-03-24
申请号：US17407133
申请日：2021-08-19
Applicant: Novatek Microelectronics Corp.
Inventor： Wei-Lun Shih , Wu Wei Lin , Kuei Jung Chen
Abstract: An electronic circuit adapted to control an operation of a gate driver circuit is provided. The electronic circuit includes a gate control circuit. The gate control circuit outputs control signals to the gate driver circuit in a display period and a fingerprint sensing period via the same output nodes. The control signals include a start pulse signal and a switch control signal. The switch control signal controls the gate driver circuit to operate in the display period or the fingerprint sensing period. The gate driver circuit includes a plurality of shift register groups and a switch circuit. The shift register groups output scan signals according to the start pulse signal. The switch circuit receives and outputs the scan signals to display scan lines in the display period and outputs the scan signals to fingerprint scan lines in the fingerprint sensing period according to the switch control signal.
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8.发明申请公开(公告)号：US20210357615A1
公开(公告)日：2021-11-18
申请号：US17216705
申请日：2021-03-30
Applicant: Novatek Microelectronics Corp.
Inventor： Wei-Lun Shih , Wu Wei Lin , Ting-Hsuan Hung , Wen-Yi Hsieh
Abstract: In the invention, a fingerprint driving circuit, a fingerprint sensing device, an electronic apparatus, and an operation method of the fingerprint sensing device are provided. By keeping fingerprint sensing lines in a non-fingerprint sensing region in an electrically non-floating state, flash phenomenon in a display panel may be avoided.
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公开(公告)号：US20240013817A1
公开(公告)日：2024-01-11
申请号：US17859010
申请日：2022-07-07
Applicant: Novatek Microelectronics Corp.
Inventor： Wu Wei Lin
CPC classification number: G11C7/1069 , G11C7/1039 , G11C7/1006 , G11C7/14
Abstract: The present invention provides a readout integrated circuit and an operation method thereof. The readout integrated circuit includes a readout circuit, a line buffer and a communication interface circuit. The readout circuit reads out a plurality of row sensing results of a plurality of sensor rows of a sensor. The line buffer is coupled to the readout circuit for temporarily storing a current row sensing result of a current sensor row of the sensor. The communication interface circuit is coupled to the line buffer. After the current row sensing result of the current sensor row is temporarily stored into the line buffer, the communication interface circuit outputs the current row sensing result in real time to a host circuit.
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公开(公告)号：US11709565B2
公开(公告)日：2023-07-25
申请号：US17558611
申请日：2021-12-22
Applicant: Novatek Microelectronics Corp.
Inventor： Yu-Hsien Lee , Ting-Hsuan Hung , Feng-Lin Chan , Wu Wei Lin
CPC classification number: G06F3/04166 , G06F3/0412 , G06F3/04164 , G06V40/13
Abstract: A fingerprint sensing apparatus includes a plurality of fingerprint sensors and a fingerprint readout circuit. The fingerprint sensors may be configured to operate in a fingerprint sensing cycle. The fingerprint readout circuit may be coupled to the plurality of fingerprint sensors via a plurality of sensing lines. The fingerprint readout circuit may be configured to control the fingerprint sensors to operate in the fingerprint sensing cycle. The fingerprint sensing cycle includes an initialization period, an exposure period and a readout period. A voltage of a reset node in each fingerprint sensor among the plurality of fingerprint sensors is reset to a first voltage in a reset period after the fingerprint sensing cycle ends. The voltage of the reset node in each fingerprint sensor is initialized to an initial voltage in the initialization period. The initial voltage is different from the first voltage.
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