公开(公告)号：US20200292796A1

公开(公告)日：2020-09-17

申请号：US16885302

申请日：2020-05-28

Applicant: NOVATEK Microelectronics Corp.

Inventor： Feng-Jung KUO ,  Min HUANG ,  Jung-Chung LEE ,  Chi-Ting CHEN ,  Li-Yuan CHANG ,  I-Hsiu CHEN ,  Chin-Hui HUANG

IPC: G02B13/14 ,  G02B6/00 ,  G02B1/11 ,  G02B5/00 ,  G02B5/20 ,  G02B7/02

Abstract: An optical fingerprint sensing module includes an image sensing device, a light source and a light shielding structure. The image sensing device is configured to sense light transmitted from a fingerprint of a finger on a display panel. The image sensing device includes a light sensing plane having a first geometric center. The light source includes a light emitting plane having a second geometric center. The first geometric center is separated from the second geometric center by a distance from 2 mm to 20 mm. The light shielding structure is disposed between the image sensing device and the light source. In examples, the optical fingerprint sensing module further includes a field angle controller to constrain light pass there through with a field angle of 5-60 degrees. A display device including an optical fingerprint sensing module is disclosed herein as well.

公开(公告)号：US20200285053A1

公开(公告)日：2020-09-10

申请号：US16294926

申请日：2019-03-07

Applicant: Novatek Microelectronics Corp.

Inventor： Xianbo Tan ,  Xiaoming Bu ,  YuanJia Du

IPC: G02B27/01 ,  H04N19/513 ,  H04N19/59 ,  G02B27/00

Abstract: A method and a system for video frame processing are proposed. The method is applicable to a system including a computing device and a head-mounted display having a motion sensor, a processor, and a display. The method includes the following steps. A sequence of rendered video frames including a first frame and a second frame subsequent to the first frame is received by the processor from the computing device. A first head movement of the head-mounted display is obtained from the motion sensor by the processor, where the first head movement is associated with the first frame. An interpolated frame is rendered according to the first frame, the second frame, and the first head movement and displayed subsequent to the first frame and prior to the second frame on the display by the processor.

公开(公告)号：US10771016B2

公开(公告)日：2020-09-08

申请号：US16249911

申请日：2019-01-17

Applicant: Novatek Microelectronics Corp.

Inventor： Chia-Wei Su ,  Ju-Lin Huang ,  Keko-Chun Liang

IPC: H03F1/08 ,  H03F1/52 ,  H03F3/30 ,  H03F3/45

Abstract: An amplifier circuit including an input amplifier, an output amplifier and a diode device is provided. The output amplifier is coupled to the input amplifier and outputs an output voltage. The diode device is coupled between an output end and an input end of the output amplifier. When a voltage difference between the output end and the input end of the output amplifier is greater than a barrier voltage of the diode device, the diode device is turned on, and an overshoot of the output voltage is reduced.

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

IPC: H04N5/225 ,  G06K9/00

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.

公开(公告)号：US20200265206A1

公开(公告)日：2020-08-20

申请号：US16531126

申请日：2019-08-05

Applicant: Novatek Microelectronics Corp.

Inventor： Jung-Chen Chung ,  Chi-Ting Chen

IPC: G06K9/00 ,  G06F21/32

Abstract: A fingerprint and proximity sensing apparatus for fingerprint recognizing and proximity sensing is provided. The fingerprint and proximity sensing apparatus includes a display panel, a fingerprint sensor, and at least one proximity sensing light emitting diode. The fingerprint sensor has an optical sensing array. The optical sensing array is configured to receive a first light emitted from the display panel and a second light emitted from the at least one proximity sensing light emitting diode at different time periods. The first light and the second light have different ranges of wave length. A sensing process is also provided.

公开(公告)号：US20200243000A1

公开(公告)日：2020-07-30

申请号：US16258695

申请日：2019-01-28

Applicant: NOVATEK Microelectronics Corp.

Inventor： Hsien-Po Huang ,  Yen-Tao Liao

IPC: G09G3/20

Abstract: A method of compensating pixel data for a display panel includes the steps of: receiving a first pixel data and a second pixel data respectively corresponding to two adjacent data lines of the display panel; generating a compensation pixel data by searching a lookup table based on the first pixel data and the second pixel data; and transmitting the compensation pixel data to one of the two adjacent data lines to be displayed on the display panel.

公开(公告)号：US20200233558A1

公开(公告)日：2020-07-23

申请号：US16558337

申请日：2019-09-03

Applicant: NOVATEK Microelectronics Corp.

Inventor： Tsen-Wei Chang

IPC: G06F3/041 ,  G06K9/00

Abstract: A fingerprint and touch sensor includes a touch receiver, a fingerprint receiver, a mixer and a signal processing circuit. The touch receiver is configured to receive a touch sensing signal. The fingerprint receiver is configured to receive a fingerprint sensing signal having a first frequency. The mixer, coupled to the fingerprint receiver, is configured to move the fingerprint sensing signal in the first frequency to a second frequency. The signal processing circuit, coupled to the touch receiver and the mixer, is configured to process the fingerprint sensing signal in the second frequency and the touch sensing signal.

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.

公开(公告)号：US20200211488A1

公开(公告)日：2020-07-02

申请号：US16233141

申请日：2018-12-27

Applicant: NOVATEK Microelectronics Corp.

Inventor： Cheng-Kai Kuei ,  Hsi-Mao Yu ,  Syang-Yun Tzeng

IPC: G09G3/36

Abstract: The present invention discloses a method for a source driver, for preventing image sticking in a display panel coupled to the source driver. The source driver includes a first output driver and a second output driver having different polarities. The first output driver is configured with a first driving capability and the second output driver is configured with a second driving capability. The method includes the steps of: obtaining an effective voltage of a pixel in the display panel; and adjusting the second driving capability of the second output driver to be identical to the first driving capability of the first output driver, to allow the adjusted second driving capability to drive the effective voltage to reach a level having the same magnitude as a level of the effective voltage driven by the first source driver with the same variation of display data.

公开(公告)号：US20200210015A1

公开(公告)日：2020-07-02

申请号：US16237754

申请日：2019-01-02

Applicant: NOVATEK Microelectronics Corp.

Inventor： Huan-Teng Cheng ,  Huang-Chin Tang

IPC: G06F3/041 ,  G09G5/12

Abstract: A method of controlling timing for a touch and display driver system includes the steps of: receiving an external signal; generating a plurality of time units each having a display period and a touch period; generating an internal signal for controlling a display operation in the display period; and synchronizing the internal signal with the external signal for a time unit among the plurality of time units at a time point different from at least one of the start of the time unit and the end of the time unit.