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公开(公告)号：US20210326566A1
公开(公告)日：2021-10-21
申请号：US16997888
申请日：2020-08-19
Applicant: NOVATEK Microelectronics Corp.
Inventor： I-Hsiu CHEN , Ching-Kuan CHIU
Abstract: An under display light field sensor is for sensing a fingerprint or touch on or in proximity to a display panel. The under display light field sensor includes a light-field image sensor and a plurality of micro-lenses on the subarrays of the sensing pixels. The light-field image sensor includes a plurality of subarrays of sensing pixels under the display panel. The sensing pixels in an identical one of the subarrays are configured to capture images of an object on or in proximity to the display panel by sensing lights from different directions. Each of the micro-lenses corresponds to one of the subarrays of the sensing pixels.
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公开(公告)号：US11145257B2
公开(公告)日：2021-10-12
申请号：US16779662
申请日：2020-02-02
Applicant: NOVATEK Microelectronics Corp.
Inventor： Chieh-Hsiang Chang , Shih-Hsiang Pan , Chi-Hung Lin , Wen-Pin Tsai , Huang-Chin Tang
IPC: G09G3/3291 , G09G3/3233
Abstract: A display device driving method, suitable for a driver circuit, includes the following steps: determining magnitude of a plurality of data voltages according to received display data, and the plurality of data voltages are configured to be transmitted to a plurality of pixel circuits via a plurality of data lines; comparing the magnitude of the plurality of data voltages to generate a comparison result; and before providing corresponding ones of the plurality of data voltages to a first pixel group arranged at an i-th row of the plurality of pixel circuits, providing a first reset voltage having a value determined according to the comparison result to the plurality of data lines, or providing a second reset voltage to m data lines selected according to the comparison result from the plurality of data lines, i is a positive integer, and m is an integer.
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523.发明授权公开(公告)号：US11112302B2
公开(公告)日：2021-09-07
申请号：US16290948
申请日：2019-03-03
Applicant: NOVATEK Microelectronics Corp.
Inventor： Jung-Chen Chung , Chi-Ting Chen
Abstract: A method of switching a control voltage of a photo sensor cell for a photo sensor includes when the photo sensor cell is switched from a turned-off state to an turned-on state, sequentially switching the control voltage to at least one first voltage provided by at least one first voltage supply, and switching the control voltage to a first target voltage provided by a first charging pump circuit; and when the photo sensor cell is switched from the turned-on state to the turned-off state, sequentially switching the control voltage to at least one second voltage provided by at least one second voltage supply or a ground voltage, and switching the control voltage to a second target voltage provided by a second charging pump circuit.
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公开(公告)号：US11106887B1
公开(公告)日：2021-08-31
申请号：US17143108
申请日：2021-01-06
Applicant: Novatek Microelectronics Corp.
Inventor： Huan-Teng Cheng , Yuan Heng Lu
IPC: G06K9/00
Abstract: An electronic circuit adapted to drive a display panel including a plurality of fingerprint sensing lines is provided. The electronic circuit includes a fingerprint sensing circuit. The fingerprint sensing circuit is configured to receive a fingerprint sensing signal corresponding to a fingerprint image from the fingerprint sensing lines. The fingerprint sensing signal includes a plurality of fingerprint image segments. The fingerprint sensing circuit rearranges the fingerprint image segments to generate the fingerprint image according to an order of the fingerprint sensing lines. In addition, a method for generating a fingerprint image is also provided.
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公开(公告)号：US20210255752A1
公开(公告)日：2021-08-19
申请号：US17211864
申请日：2021-03-25
Applicant: Novatek Microelectronics Corp.
Inventor： Hung-Kai Chen , Yu-Huang Chen , Feng-Lin Chan
Abstract: An analog front-end circuit for a touch controller and an operating method thereof are provided. The analog front-end circuit includes an analog front-end, a first switch and a second switch. The analog front-end includes an input terminal and an output terminal. The first switch includes a first terminal and a second terminal. The first terminal of the first switch is coupled to the input terminal of the analog front-end, and the second terminal of the first switch is coupled to a panel routing. The second switch includes a first terminal and a second terminal. The first terminal of the second switch is coupled to the second terminal of the first switch, and the second terminal of the second switch is coupled to a reference voltage.
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Patent Agency Ranking
公开(公告)号：US11081034B2
公开(公告)日：2021-08-03
申请号：US16828971
申请日：2020-03-25
Applicant: NOVATEK Microelectronics Corp.
Inventor： Yun-Hsuan Yeh , Tai-Yin Wu , Ying-Hsiang Wang , Yao-Hung Kuo
Abstract: The present invention provides a driving circuit for a gamma voltage generator of a source driver. The gamma voltage generator includes a resistor string having a plurality of tap nodes, among which a plurality of first tap nodes are respectively connected to a plurality of first buffers. The driving circuit includes a second buffer, a digital-to-analog converter (DAC) and a control circuit. The second buffer is connected to a second tap node other than the plurality of first tap nodes among the plurality of tap nodes. The DAC is coupled to the second buffer. The control circuit, coupled to the DAC, is configured to receive a plurality of first control signals for the plurality of first buffers and calculate a second control signal for the DAC according to the plurality of first control signals.
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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：US20210216742A1
公开(公告)日：2021-07-15
申请号：US17133658
申请日：2020-12-24
Applicant: NOVATEK Microelectronics Corp.
Inventor： Yuan-Heng Lu , Tsung-Chan Lee
IPC: G06K9/00 , G02F1/1333
Abstract: A fingerprint sensing module is used for a liquid crystal display (LCD) panel having a sensing area. The fingerprint sensing module includes a light source and a shielding frame. The light source is configured to provide light emission for fingerprint sensing performed on the sensing area, wherein the sensing area is at a first side of the light source. The shielding frame is disposed on a light emission path from the light source toward the first side.
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公开(公告)号：US11062653B2
公开(公告)日：2021-07-13
申请号：US16167537
申请日：2018-10-23
Applicant: Novatek Microelectronics Corp.
Inventor： Tse-Yuan Chen , Jung-Hsuan Sung , Chien-Yu Chen
IPC: G09G3/3258 , H01L51/52
Abstract: A display apparatus and an operation method for a display panel thereof are provided. The display apparatus includes a display panel and a voltage supply circuit. The display panel includes a pixel circuit and a common voltage line. The pixel circuit includes an organic light emitting diode (OLED), wherein a cathode of the OLED is coupled to the common voltage line. The voltage supply circuit is coupled to the common voltage line of the display panel. The voltage supply circuit supplies a common voltage to the common voltage line during a normal operation period. The voltage supply circuit supplies a reverse bias voltage higher than the common voltage to the common voltage line during a recovery period to reversely bias the OLED.
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公开(公告)号：US20210210451A1
公开(公告)日：2021-07-08
申请号：US16737883
申请日：2020-01-08
Applicant: NOVATEK Microelectronics Corp.
Inventor： Hsien-Wen LO , Chang-Sheng TSENG
Abstract: An electronic device includes a substrate and first bumps. The first bumps are disposed on the substrate and arranged in a first bump row. Each first bump has a first end and a second end opposite to each other. Centers of the first ends of the first bumps are on a first axial line. A first axial coordinate of a center of the second end of a respective first bump relative to a second axial line perpendicular to the first axial line is XA(1+βAYA), in which XA is a first axial coordinate of the center of the first end of the respective first bump relative to the second axial line, YA is a second axial coordinate of the center of the second end of the respective first bump relative to the first axial line, and βA is a slope coefficient of the respective first bump.
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