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公开(公告)号：US20220335743A1
公开(公告)日：2022-10-20
申请号：US17720115
申请日：2022-04-13
Applicant: NOVATEK MICROELECTRONICS CORP.
Inventor： Wei-Lun Shih , Yuan-Heng Lu , Ting-Hsuan Hung , Jia-Lin Chen
Abstract: Provided are a fingerprint identification method for a panel, an electronic device and a control circuit. The method includes setting voltages on the data lines and sensing lines that may affect a fingerprint identification result to a predetermined DC voltage during a predetermined time period before a start of a fingerprint identification period that follows a display driving period. As such, when a display driving operation and a fingerprint identification operation are performed in a time-division manner, the influence of the display driving operation on the fingerprint identification operation can be eliminated, that is, the influence on the fingerprint identification result from the voltage on the data line and sensing line can be eliminated.
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2.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：US20220108557A1
公开(公告)日：2022-04-07
申请号：US17553730
申请日：2021-12-16
Applicant: Novatek Microelectronics Corp.
Inventor： Huan-Teng Cheng , Ting-Hsuan Hung , Wei-Lun Shih , Huang-Chin Tang
Abstract: An electronic circuit adapted to process fingerprint data from a panel including touch sensors and fingerprint sensors is provided. The electronic circuit includes a first circuit, a second circuit and a control circuit. The first circuit is configured to receive touch sensing signals from the touch sensors. The second circuit is configured to receive fingerprint sensing signals corresponding to at least one fingerprint imprint from the fingerprint sensors via fingerprint sensing lines. The control circuit is configured to determine a fingerprint touch area according to the touch sensing signals, and select a subset of the fingerprint sensing lines to form a fingerprint sensing zone adapted for a fingerprint sensing operation and including at least one boundary based on the determined fingerprint touch area. The subset of fingerprint sensing lines is selected based on the at least one boundary of the fingerprint sensing zone. An electronic device and a method for sensing at least one fingerprint imprint from a panel are also provided.
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公开(公告)号：US11250232B2
公开(公告)日：2022-02-15
申请号：US16789448
申请日：2020-02-13
Applicant: NOVATEK Microelectronics Corp.
Inventor： Hung-Kai Chen , Ting-Hsuan Hung , Chih-Yuan Chang , Feng-Lin Chan
IPC: G06K9/00
Abstract: A fingerprint detecting system comprises a fingerprint module, for receiving a fingerprint driving signal and performing a frequency modulation on the fingerprint driving signal, to correspondingly outputting a fingerprint signal with a first frequency based on the fingerprint driving signal, and a signal processing circuit, coupled to the fingerprint module, for receiving the fingerprint signal with the first frequency, performing a frequency demodulation to shift the first frequency of the fingerprint signal to a second frequency, and filtering the fingerprint signal with the second frequency based on the first frequency, whereby the filtered fingerprint signal is used for a fingerprint data analysis.
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公开(公告)号：US11244135B2
公开(公告)日：2022-02-08
申请号：US16907306
申请日：2020-06-21
Applicant: Novatek Microelectronics Corp.
Inventor： Huan-Teng Cheng , Ting-Hsuan Hung , Wei-Lun Shih , Huang-Chin Tang
Abstract: An electronic circuit including a touch control circuit, a fingerprint sensing circuit and a switch circuit is provided. The touch control circuit is configured to receive touch sensing signals from a panel and determine a touch area according to the touch sensing signals. The fingerprint sensing circuit is configured to receive fingerprint sensing signals corresponding to at least one fingerprint image from fingerprint sensors disposed in the panel via fingerprint sensing lines. The switch circuit is coupled to the fingerprint sensing circuit. The switch circuit is configured to be coupled to a part of the fingerprint sensing lines that is selected to form a fingerprint sensing zone for a fingerprint sensing operation according to the determined touch area. Each of the fingerprint sensing lines is selectable to be a boundary of the fingerprint sensing zone. An electronic device and a method for sensing at least one fingerprint image are also provided.
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Patent Agency Ranking
公开(公告)号：US20230316800A1
公开(公告)日：2023-10-05
申请号：US18321730
申请日：2023-05-22
Applicant: Novatek Microelectronics Corp.
Inventor： Huan-Teng Cheng , Ting-Hsuan Hung , Wei-Lun Shih , Huang-Chin Tang
CPC classification number: G06V40/13 , G06F3/0412 , G06V40/1318 , G09G3/20 , G09G2310/0272
Abstract: An imaging control circuit for collecting object image data for an object presented on a portion of a surface of a display panel is provided. The imaging control circuit includes a first circuit, a second circuit and a third circuit. The first circuit is adapted to receive touch sensing signals from a set of touch sensors located in the display panel. The second circuit is adapted to receive object image sensing signals from a set of imaging sensors. The object image sensing signals are associated with the object detected on the surface of the display panel. The third circuit is adapted to determine a location of the object from the touch sensing signals and generate a variable sized object imaging zone based on a location and a size of an object image. The variable sized object imaging zone includes a variable subset of the imaging sensors.
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7.发明公开公开(公告)号：US20230177996A1
公开(公告)日：2023-06-08
申请号：US18163287
申请日：2023-02-02
Applicant: Novatek Microelectronics Corp.
Inventor： Huan-Teng Cheng , Ting-Hsuan Hung , Wei-Lun Shih , Huang-Chin Tang
CPC classification number: G09G3/20 , G06F3/0412 , G06V40/1318 , G09G2310/0272
Abstract: An electronic circuit includes a fingerprint sensing circuit that is configured to receive fingerprint sensing signals corresponding to a fingerprint image from fingerprint sensors via fingerprint sensing lines. The fingerprint sensing circuit is further configured to select a subset of the fingerprint sensing lines to form a fingerprint sensing zone having at least one boundary and adapted for a fingerprint sensing operation based on a fingerprint touch area. The subset of fingerprint sensing lines is selected based on the at least one boundary of the fingerprint sensing zone. The fingerprint sensing circuit is further configured to generate the fingerprint image according to the fingerprint sensing signals by a remapping operation.
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公开(公告)号：US11462044B2
公开(公告)日：2022-10-04
申请号：US17005325
申请日：2020-08-28
Applicant: Novatek Microelectronics Corp.
Inventor： Wei-Lun Shih , Wu-Wei Lin , Huang-Chin Tang , Ting-Hsuan Hung
Abstract: A chip, an electronic device, a panel and an operation method thereof are provided. The chip can control the panel to perform fingerprint sensing. Fingerprint sensing pixels of the panel are divided into a plurality of fingerprint zones along a column direction. The chip includes a selecting circuit and a control circuit. The selecting circuit obtains information about a selected fingerprint zone among the fingerprint zones. The control circuit provides multiple control signals for controlling the panel to perform fingerprint sensing. The control signals include multiple start pulse signals. The start pulse signals collectively indicate the selected fingerprint zone. The number of the fingerprint zones is greater than the number of the start pulse signals.
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公开(公告)号：US11036952B2
公开(公告)日：2021-06-15
申请号：US16677605
申请日：2019-11-07
Applicant: Novatek Microelectronics Corp.
Inventor： Ching-Ho Hung , Jiun-Jie Tsai , Ting-Hsuan Hung , Wei-Lun Shih
Abstract: A touch apparatus and a touch detection integrated circuit (IC) thereof are provided. The touch detection IC includes a driving signal generation circuit and a receiving circuit. The driving signal generation circuit is configured to control a touch panel to perform touch sensing operation and control a fingerprint sensor to perform fingerprint sensing operation. The receiving circuit receives and processes a touch signal of the touch panel during a first period when the driving signal generation circuit transmits the first driving signal for controlling the touch panel to perform touch sensing operation. The receiving circuit receives and processes a fingerprint signal of the fingerprint sensor during a second period when the driving signal generation circuit transmits the second driving signal for controlling the fingerprint sensor to perform fingerprint sensing operation.
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公开(公告)号：US20210073504A1
公开(公告)日：2021-03-11
申请号：US17005325
申请日：2020-08-28
Applicant: Novatek Microelectronics Corp.
Inventor： Wei-Lun Shih , Wu-Wei Lin , Huang-Chin Tang , Ting-Hsuan Hung
Abstract: A chip, an electronic device, a panel and an operation method thereof are provided. The chip can control the panel to perform fingerprint sensing. Fingerprint sensing pixels of the panel are divided into a plurality of fingerprint zones along a column direction. The chip includes a selecting circuit and a control circuit. The selecting circuit obtains information about a selected fingerprint zone among the fingerprint zones. The control circuit provides multiple control signals for controlling the panel to perform fingerprint sensing. The control signals include multiple start pulse signals. The start pulse signals collectively indicate the selected fingerprint zone. The number of the fingerprint zones is greater than the number of the start pulse signals.
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