公开(公告)号：US11503242B2

公开(公告)日：2022-11-15

申请号：US17168201

申请日：2021-02-05

Applicant: Novatek Microelectronics Corp.

Inventor： Chi-Ting Chen

IPC: G06V40/13 ,  H04N5/378 ,  H01L27/146 ,  H01L23/00 ,  H01L25/16 ,  H01L27/32

Abstract: A readout integrated circuit configured to read out sensing signals from an optical sensing panel including a sensor array for fingerprint sensing is provided. The readout integrated circuit includes a plurality of input terminals, a comparator circuit and a control circuit. The plurality of input terminals are configured to be coupled to a plurality of output terminals of the optical sensing panel. The comparator circuit is configured to receive an output voltage from an output terminal of the plurality of output terminals of the optical sensing panel and at least one reference voltage, compare the output voltage to the at least one reference voltage and output a comparison result. The control circuit is coupled to the comparator circuit. The control circuit is configured to receive the comparison result and determine a supplementary charge amount to be charged to or discharged from the output terminal according to the comparison result.

公开(公告)号：US11417142B2

公开(公告)日：2022-08-16

申请号：US17324116

申请日：2021-05-19

Applicant: NOVATEK Microelectronics Corp.

Inventor： Chi-Ting Chen

IPC: G06V40/13

Abstract: An optical fingerprint sensing device includes optical sensing pixels, optical blocked pixels and a readout circuit. Each of the optical sensing pixels includes a first photodevice for sensing an illumination through an optical path. The optical sensing pixels are configured to generate sensing signals. Each of the optical blocked pixels includes a second photodevice blocked from the illumination. The optical sensing pixels are configured to generate a plurality of tracking signals. The readout circuit is configured to generate output signals according to differences between the sensing signals and the tracking signals.

公开(公告)号：US11386689B2

公开(公告)日：2022-07-12

申请号：US17123150

申请日：2020-12-16

Applicant: NOVATEK MICROELECTRONICS CORP.

Inventor： Jung-Chen Chung ,  Chi-Ting Chen

IPC: G06V40/13 ,  G06F3/044 ,  G06V40/12

Abstract: A method for fingerprint sensing of an electronic module capable of fingerprint sensing, the electronic module for being coupled to a plurality of fingerprint sensing pixels, the electronic module including an analog front-end stage for being coupled to the fingerprint sensing pixels, the method comprising the following steps. A first scanning operation is performed on at least a first portion of the fingerprint sensing pixels by using a first reference signal being applied to a reference terminal of the analog front-end stage to obtain a level of a second reference signal which is based on a sensing result of the first scanning operation and is different from the first reference signal. A second scanning operation is performed on at least a second portion of the fingerprint sensing pixels by using the second reference signal being applied to the reference terminal of the analog front-end stage.

公开(公告)号：US11062110B2

公开(公告)日：2021-07-13

申请号：US16713013

申请日：2019-12-13

Applicant: NOVATEK Microelectronics Corp.

Inventor： Jung-Chen Chung ,  Chi-Ting Chen

IPC: G06K9/00

Abstract: A fingerprint detection device comprises a plurality of fingerprint sensing circuits and a processor. The plurality of fingerprint sensing circuits is corresponding to a plurality of sensing zones respectively. The processor is electrically coupled to the fingerprint sensing circuits through a shared transmission bus. The processor is configured to receive information of a touched area of each of the sensing zones, determine a transmission sequence according to the touched area of each of the sensing zones, and control the fingerprint sensing circuits to transmit sensing information of the corresponding sensing zones to the processor through the shared transmission bus according to the transmission sequence.

公开(公告)号：US20210043667A1

公开(公告)日：2021-02-11

申请号：US17078060

申请日：2020-10-22

Applicant: NOVATEK Microelectronics Corp.

Inventor： Chi-Ting Chen

IPC: H01L27/146

Abstract: An image sensor includes a sensor layer and a metal layer. The sensor layer includes a plurality of sensing elements arranged as a 2-dimensional array along a first direction and a second direction. The metal layer includes a plurality of metal wires configured to form a plurality of apertures superposed on the plurality of sensing elements. At least one of the plurality of metal wires forming the plurality of apertures is entirely disposed along a third direction different from the first direction and the second direction.

公开(公告)号：US10679032B2

公开(公告)日：2020-06-09

申请号：US16105977

申请日：2018-08-21

Applicant: NOVATEK Microelectronics Corp.

Inventor： Jung-Chen Chung ,  Chi-Ting Chen

IPC: G06K9/00

Abstract: A fingerprint sensing method and a fingerprint sensing device are provided. The fingerprint sensing method includes the following steps. A first supply voltage is provided to power a fingerprint sensing circuit of the fingerprint sensing circuit. When the fingerprint sensing circuit is powered by the first supply voltage, it is detected whether a finger touch occurs. In response to determining that the finger touch has occurred, a second supply voltage is provided to power the fingerprint sensing device. A fingerprint image sensing is performed to obtain a fingerprint image when the fingerprint sensing circuit is powered by the second supply voltage.

公开(公告)号：US20200175248A1

公开(公告)日：2020-06-04

申请号：US16208472

申请日：2018-12-03

Applicant: NOVATEK Microelectronics Corp.

Inventor： Yu-Tsung Wu ,  Chi-Ting Chen ,  Chih-Lun Cheng

IPC: G06K9/00 ,  G06K9/40 ,  H04N5/367

Abstract: A sensor device includes a fingerprint sensing module, configured to sense a first raw image using a first exposure time; and an exposure time adjusting module. The exposure time adjusting module is configured to obtain a first image according to the first raw image; determine whether the first image comprises a flicker noise; and adjust the first exposure time when the first image comprises the flicker noise, so as to mitigate the flicker noise.

公开(公告)号：US11170193B2

公开(公告)日：2021-11-09

申请号：US16840445

申请日：2020-04-05

Applicant: NOVATEK Microelectronics Corp.

Inventor： Chi-Ting Chen

IPC: G06F3/041 ,  G06K9/00 ,  G09G3/3225 ,  G09G3/36

Abstract: An object identifying method, suitable for an object identifying circuit configured to be disposed under a display panel, includes the following operations: displaying a black pattern by the display panel; generating a plurality of first sensing signals of a plurality of first sensor pixels of the display panel arranged in the black pattern; generating a plurality of second sensing signals of a plurality of second sensor pixels of the display panel arranged in a contact area with which the display panel contacting an object to be identified; adjusting voltage levels of the plurality of second sensing signals according to the plurality of first sensing signals; and generating an image corresponding to the object to be identified from the adjusted plurality of second sensing signals.

公开(公告)号：US20210248342A1

公开(公告)日：2021-08-12

申请号：US17168185

申请日：2021-02-05

Applicant: Novatek Microelectronics Corp.

Inventor： Chi-Ting Chen

IPC: G06K9/00 ,  H01L27/146 ,  H04N5/378

Abstract: A readout integrated circuit configured to read out sensing signals from an optical sensing panel is provided. The optical sensing panel includes a sensor array for fingerprint sensing. The readout integrated circuit includes a plurality of input terminals, a first discharging circuit and a control circuit. The plurality of input terminals are configured to be coupled to a plurality of output terminals of the optical sensing panel. The first discharging circuit is coupled to one of the plurality of input terminals. The first discharging circuit is configured to discharge one of the plurality of output terminals of the optical sensing panel by a first current during a readout period. The readout integrated circuit reads out a voltage of the output terminal as a sensing signal. The control circuit is coupled to the first discharging circuit. The control circuit is configured to output at least one control signal to control an operating period of the first discharging circuit.

公开(公告)号：US10990782B2

公开(公告)日：2021-04-27

申请号：US16676809

申请日：2019-11-07

Applicant: NOVATEK MICROELECTRONICS CORP.

Inventor： Chun-Yen Lin ,  Ping Liu ,  Chi-Ting Chen

IPC: G06K9/00

Abstract: An operating method of an optical fingerprint capture apparatus includes: by the apparatus upon receipt of a scan command from a host, entering an exposure mode where an image sensor thereof is exposed to light carrying information of a fingerprint; by the apparatus upon complete exposure of the image sensor to the light, entering a sample mode where multiple pieces of pixel data that cooperatively represent an image of the fingerprint are obtained and written to a data buffer thereof; and by the apparatus at a predetermined output time point that is later than a start of the sample mode and earlier than an end of the sample mode, outputting an interrupt request to cause the host to start reading the pieces of pixel data from the data buffer.