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公开(公告)号：US20240087356A1
公开(公告)日：2024-03-14
申请号：US18510688
申请日：2023-11-16
Applicant: Novatek Microelectronics Corp.
Inventor： Cho-Hsuan Jhang , Chao-Yu Meng , Shih-Cheng Chen , Chih-Peng Hsia
CPC classification number: G06V40/1312 , G06V40/1306 , H04N23/57
Abstract: A display apparatus and an fingerprint sensing method thereof are provided. A display panel of the display apparatus has a pixel circuit array, an in-display touch sensor array, and an in-display fingerprint sensor array. A driving circuit drives the in-display fingerprint sensor array to read a fingerprint image. A current display frame period is divided into a plurality of unit periods, each of the unit periods includes at least one fingerprint sensing period and one or both of a display driving period and a touch sensing period. The driving circuit resets a current fingerprint sensor in the in-display fingerprint sensor array during a first fingerprint sensing period among these fingerprint sensing periods of the first display frame period. The driving circuit reads a sensing result of the current fingerprint sensor during a second fingerprint sensing period succeeding to the first fingerprint sensing period.
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公开(公告)号：US20230262351A1
公开(公告)日：2023-08-17
申请号：US17671609
申请日：2022-02-15
Applicant: Novatek Microelectronics Corp.
Inventor： Wen-Shen Wuen , Shen-Fu Tsai , Cho-Hsuan Jhang
IPC: H04N5/351 , H04N5/3745 , H04N5/378 , H04N5/369
CPC classification number: H04N5/351 , H04N5/37452 , H04N5/378 , H04N5/379
Abstract: An image sensor, including a photosensitive pixel array, a storage element, and a displacement processing element, is provided. The photosensitive pixel array includes a photosensitive pixel. The storage element is configured to store a first sensing result of the photosensitive pixel at a first time point. The displacement processing element is coupled to the storage element to receive the first sensing result. The displacement processing element is configured to generate displacement information, wherein an image frame with the displacement information is transmitted to the outside of the image sensor.
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公开(公告)号：US11093080B2
公开(公告)日：2021-08-17
申请号：US16726250
申请日：2019-12-24
Applicant: Novatek Microelectronics Corp.
Inventor： Shih-Cheng Chen , Cho-Hsuan Jhang , Chih-Peng Hsia , Shiang-Fei Wang , Su-Wei Lien
Abstract: An electronic device and a fingerprint sensing control method thereof are provided. A sensing region of a display panel is divided into a plurality of fingerprint zones. The electronic device determines at least one target fingerprint zone from the fingerprint zones according to a touched area. The electronic device scans the at least one target fingerprint zone for performing fingerprint sensing. The electronic device performs an accelerated reading operation. The accelerated reading operation includes: reading at least one sensing signal from the at least one target fingerprint zone; and skipping reading at least one of the fingerprint zones other than the at least one target fingerprint zone among the fingerprint zones.
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公开(公告)号：US20200327301A1
公开(公告)日：2020-10-15
申请号：US16845001
申请日：2020-04-09
Applicant: Novatek Microelectronics Corp.
Inventor： Wei-Lun Shih , Tsen-Wei Chang , Cho-Hsuan Jhang , Chih-Peng Hsia , Cheng-Yu Chiang
IPC: G06K9/00
Abstract: A driving apparatus and an operation method thereof are provided. The driving apparatus includes a first driving circuit and a second driving circuit. The first driving circuit performs a first driving mode on a panel. The first driving circuit performs the first driving mode during a first frame period among a plurality of frame periods and skips the first driving mode during a first skip period between the first frame period and a second frame period among the frame periods. The first driving circuit outputs timing control signal including a timing that the first driving mode is skipped. The second driving circuit is coupled to the first driving circuit to receive the timing control signal. The second driving circuit performs a fingerprint sensing operation different from the first driving mode on the panel according to the timing control signal during the first skip period.
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公开(公告)号：US12111996B2
公开(公告)日：2024-10-08
申请号：US17891149
申请日：2022-08-19
Applicant: Novatek Microelectronics Corp.
Inventor： Wei-Lun Shih , Tsen-Wei Chang , Cho-Hsuan Jhang , Chih-Peng Hsia , Cheng-Yu Chiang
CPC classification number: G06F3/04166 , G06V40/13
Abstract: A driving apparatus and an operation method thereof are provided. The driving apparatus includes a first driving circuit and a second driving circuit. The first driving circuit suspends performing at least one of a display driving operation and a touch sensing operation during a skip period under a driving mode, and the first driving circuit performs the at least one of the display driving operation and the touch sensing operation outside the skip period under the driving mode. The second driving circuit is coupled to the first driving circuit. The second driving circuit performs a fingerprint sensing operation during the skip period.
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Patent Agency Ranking
公开(公告)号：US12087079B2
公开(公告)日：2024-09-10
申请号：US18510688
申请日：2023-11-16
Applicant: Novatek Microelectronics Corp.
Inventor： Cho-Hsuan Jhang , Chao-Yu Meng , Shih-Cheng Chen , Chih-Peng Hsia
CPC classification number: G06V40/1312 , G06V40/1306 , H04N23/57
Abstract: A display apparatus and an fingerprint sensing method thereof are provided. A display panel of the display apparatus has a pixel circuit array, an in-display touch sensor array, and an in-display fingerprint sensor array. A driving circuit drives the in-display fingerprint sensor array to read a fingerprint image. A current display frame period is divided into a plurality of unit periods, each of the unit periods includes at least one fingerprint sensing period and one or both of a display driving period and a touch sensing period. The driving circuit resets a current fingerprint sensor in the in-display fingerprint sensor array during a first fingerprint sensing period among these fingerprint sensing periods of the first display frame period. The driving circuit reads a sensing result of the current fingerprint sensor during a second fingerprint sensing period succeeding to the first fingerprint sensing period.
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公开(公告)号：US11777515B2
公开(公告)日：2023-10-03
申请号：US17241075
申请日：2021-04-27
Applicant: Novatek Microelectronics Corp.
Inventor： Chih-Peng Hsia , Cho-Hsuan Jhang , Su-Wei Lien
CPC classification number: H03M1/508 , H03K5/135 , H03K5/1565 , H03M1/825
Abstract: A column analog-to-digital converter and the local counting method is provided. The column analog-to-digital converter includes a plurality of analog-to-digital converters in parallel. Each of the analog-to-digital converters includes a comparator and a counting circuit. The comparator compares the ramp voltage with one of the plurality of column signals to generate a comparator output signal. The counting circuit generates a local clock by means of a voltage-controlled oscillator of the counting circuit according to the base clock and the comparator output signal, counts the base clock and the local clock respectively to generate a first counting output and a second counting output, and combines the first counting output with the second counting output to generate the counting output.
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8.发明授权公开(公告)号：US11507225B2
公开(公告)日：2022-11-22
申请号：US17337453
申请日：2021-06-03
Applicant: Novatek Microelectronics Corp.
Inventor： Shih-Cheng Chen , Cho-Hsuan Jhang , Chih-Peng Hsia , Shiang-Fei Wang , Su-Wei Lien
Abstract: An electronic device, a fingerprint sensing control method and a fingerprint scanning control method are provided. A sensing region of a display panel is divided into a plurality of fingerprint zones. The electronic device determines at least one target fingerprint zone from the fingerprint zones according to a touched area. The electronic device scans the at least one target fingerprint zone to control the at least one target fingerprint zone for performing fingerprint sensing. The electronic device performs an accelerated scanning operation. The accelerated scanning operation includes: setting a scanning speed corresponding to at least one target scanning group coupled to at least the touched area to a first speed; and setting a scanning speed corresponding to one or more scanning groups other than the at least one target scanning group to a second speed higher than the first speed.
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公开(公告)号：US20200275001A1
公开(公告)日：2020-08-27
申请号：US16796941
申请日：2020-02-21
Applicant: Novatek Microelectronics Corp.
Inventor： Cho-Hsuan Jhang , Chao-Yu Meng , Shih-Cheng Chen , Chih-Peng Hsia
Abstract: A display apparatus and an fingerprint sensing method thereof are provided. A display panel of the display apparatus has a pixel circuit array, an in-display touch sensor array, and an in-display fingerprint sensor array. A driving circuit drives the in-display fingerprint sensor array to read a fingerprint image. A current display frame period is divided into a plurality of unit periods, each of the unit periods includes at least one fingerprint sensing period and one or both of a display driving period and a touch sensing period. The driving circuit resets a current fingerprint sensor in the in-display fingerprint sensor array during a first fingerprint sensing period among these fingerprint sensing periods of the first display frame period. The driving circuit reads a sensing result of the current fingerprint sensor during a second fingerprint sensing period succeeding to the first fingerprint sensing period.
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公开(公告)号：US20200218871A1
公开(公告)日：2020-07-09
申请号：US16367270
申请日：2019-03-28
Applicant: Novatek Microelectronics Corp.
Inventor： Cho-Hsuan Jhang , Chih-Peng Hsia , Wen-Shen Wuen
IPC: G06K9/00
Abstract: A fingerprint identification apparatus including a touch and display integration circuit and a fingerprint identification device is provided. The touch and display integration circuit is configured to perform a touch and display function in each of a plurality of touch and display periods during a total contact time. An object touches a predetermined area of the display panel during the total contact time. The fingerprint identification device is configured to obtain a plurality of sample images of the object in each of a plurality of sensing periods during the total contact time. Two adjacent sensing periods have at least one of the touch and display periods therebetween. A fingerprint identification method of the fingerprint identification apparatus is also provided.
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