公开(公告)号：US11205367B2

公开(公告)日：2021-12-21

申请号：US16507055

申请日：2019-07-10

Applicant: Novatek Microelectronics Corp.

Inventor： Hsueh-Yen Yang ,  Kai-Min Yang ,  Feng-Ting Pai

IPC: G02F1/1335 ,  G09G3/20 ,  G09G3/36

Abstract: A display panel including a plurality of sub-pixel repeating units is provided. The sub-pixel repeating units are repeatedly arranged on the display panel. Each of the sub-pixel repeating units includes at least one first color sub-pixel and at least one second color sub-pixel. On the display panel, the adjacent first color sub-pixels form a first polygon, and the adjacent second color sub-pixels form a second polygon. The area of the first polygon is at least twice the area of the second polygon.

公开(公告)号：US20210392260A1

公开(公告)日：2021-12-16

申请号：US16899593

申请日：2020-06-12

Applicant: NOVATEK Microelectronics Corp.

Inventor： Dong-Hai HUANG ,  Chi-Fan LIOU ,  Jie-Jung HUANG

IPC: H04N5/235

Abstract: An operating method of an image sensing device capable of detecting several light emitting diodes each having a flickering cycle time, the image sensing device includes several pixel circuits, each of the several pixel circuits includes a first sensing circuit and a second sensing circuit, the operating method including the following operations: operating the image sensing device in a first operating mode, including: sensing light by the first sensing circuit with a first exposure time longer than the flickering cycle time, thereby obtaining a first sensing result; sensing light, simultaneously by the first sensing circuit and the second sensing circuit with a second exposure time shorter than the flickering cycle time, thereby obtaining a second sensing result and a third sensing result; determining whether there is LED (light emitting diode) flickering or not according to the first sensing result, the second sensing result and the third sensing result.

公开(公告)号：US20210389863A1

公开(公告)日：2021-12-16

申请号：US17213154

申请日：2021-03-25

Applicant: NOVATEK Microelectronics Corp.

Inventor： Yi-Ying Lin ,  Chih-Chang Lai

IPC: G06F3/041 ,  G06K9/00 ,  G09G3/20

Abstract: The present invention provides a method of controlling a display panel having a sensing area and a non-sensing area. The sensing area includes a plurality of fingerprint sensing pixels, each of which is coupled to at least one control line. The non-sensing area includes a plurality of dummy pixels, each of which is coupled to at least one dummy line. The method includes steps of: applying a control signal on a first control line among the at least one control line or configuring the first control line to be floating, and applying a first anti-loading driving (ALD) signal corresponding to the control signal on a first dummy line among the at least one dummy line or configuring the first dummy line to be floating.

公开(公告)号：US11199565B1

公开(公告)日：2021-12-14

申请号：US16932563

申请日：2020-07-17

Applicant: NOVATEK MICROELECTRONICS CORP.

Inventor： Ying-Hsiang Wang ,  Jung-Hsing Liao

IPC: H03K5/22 ,  G01R19/165 ,  G05F1/56 ,  G06F1/28 ,  G01R15/04 ,  G05F3/26 ,  H02H3/24 ,  H03K5/24

Abstract: An undervoltage detection circuit includes a voltage divider, a voltage-to-current (V-to-I) converter and a current comparator. The voltage divider divides a supply voltage to generate a divided voltage. The V-to-I converter converts the divided voltage into a first current based on a first V-to-I transfer function, and converts the divided voltage into a second current based on a second V-to-I transfer function different from the first V-to-I transfer function. The current comparator compares the first and second currents to generate a comparison signal that indicates whether the supply voltage is sufficiently large.

公开(公告)号：US11195458B2

公开(公告)日：2021-12-07

申请号：US16727943

申请日：2019-12-27

Applicant: Novatek Microelectronics Corp.

Inventor： Wen-Pin Tsai

IPC: G09G3/3233 ,  G09G3/20

Abstract: A driving circuit that includes a plurality of sub-driving circuits, a plurality of latch circuits and a plurality of first switching circuits is introduced. The sub-driving circuits is configured to supply a plurality of driving currents to drive a first group of light sources to emit light to form a first pixel on a display medium. A quantity of the sub-driving circuits is corresponding to a first data resolution of pixel data of the first pixel. Each of the latch circuits is configured to store a different bit of the pixel data of the first pixel. The first switching circuits are respectively coupled to the sub-driving circuits and are configured to control the plurality of sub-driving circuits to supply the driving currents to the first group of light sources according to the pixel data.

公开(公告)号：US11194424B2

公开(公告)日：2021-12-07

申请号：US16876167

申请日：2020-05-18

Applicant: NOVATEK MICROELECTRONICS CORP.

Inventor： Feng-Lin Chan ,  Hung-Kai Chen ,  Yuan-Fu Hsueh ,  Chun-Yuan Pai

IPC: G06F3/041

Abstract: The driving apparatus for driving a touch display panel includes a first voltage generating circuit configured to generate a common reference voltage, a second voltage generating circuit configured to generate a touch driving signal, and a control circuit configured to generate a switching signal. The switching signal is at the first voltage level during display periods for providing the common reference voltage to the touch display panel. The switching signal is at the second voltage level during touch periods for providing the touch driving signal to the touch display panel. A first touch display period includes a first display period a first touch period adjacent to the first display period. A second touch display period includes a second display period and a second touch period adjacent to the second display period. The first touch display period and the second touch display period are different in time length.

公开(公告)号：US20210373736A1

公开(公告)日：2021-12-02

申请号：US17331197

申请日：2021-05-26

Applicant: NOVATEK MICROELECTRONICS CORP.

Inventor： Yu-Huang Chen ,  Feng-Lin Chan

IPC: G06F3/041 ,  G06F3/044

Abstract: A touch sensing method for a touch panel and an electronic device are provided. The touch sensing method includes: selecting a portion of multiple touch sensing units as to-sense touch sensing units, applying first touch excitation signals to the those to obtain multiple first touch sensing signals, and obtaining multiple differential sensing signals based on multiple first touch sensing signals; selecting a touch sensing unit as a reference touch sensing unit, and applying a touch reference signal to it to obtain a reference sensing signal; selecting a to-sense touch sensing unit as a preprocessing touch sensing unit, and applying a second touch excitation signal to it to obtain a second touch sensing signal; obtaining a capacitance sensing signal from the reference sensing signal and the second touch sensing signal; and acquiring capacitance values of multiple to-sense touch sensing units according to the differential sensing signals and the capacitance sensing signal.

公开(公告)号：US11190198B1

公开(公告)日：2021-11-30

申请号：US16953311

申请日：2020-11-19

Applicant: NOVATEK Microelectronics Corp.

Inventor： Guan-Ying Huang ,  Chih-Yuan Chang

IPC: H03M1/06 ,  H03H19/00

Abstract: A switched capacitor circuit includes an output capacitor, a first transmission switch, a first reference buffer, a second transmission switch, a second reference buffer and a charge compensation circuit. The output capacitor includes a first terminal and a second terminal, wherein the first terminal is coupled to an output terminal of the switched capacitor circuit, and the second terminal is coupled to a reference node. The first transmission switch is coupled to the reference node. The first reference buffer is coupled to the first transmission switch. The second transmission switch is coupled to the reference node. The second reference buffer is coupled to the second transmission switch. The charge compensation circuit is coupled to the reference node.

公开(公告)号：US11182019B2

公开(公告)日：2021-11-23

申请号：US16931455

申请日：2020-07-17

Applicant: Novatek Microelectronics Corp.

Inventor： Chung-Cher Lin ,  Yun-Hsiang Yeh ,  Ta-Keng Weng

IPC: G06F3/041

Abstract: A touch scanning method shortening a first touch latency includes: scanning a Mth column of the N-column touch panel according to a touch scan (TSHD) signal; determining whether the finger is on the Mth column of the N-column touch panel according to a scan data signal; performing a fast done process according to a fast done signal when the finger is on the Mth column of the N-column touch panel; determining whether M equals to N when the finger is not on the Mth column of the N-column touch panel; and resetting M to 1 according to a scan start signal and performing an algorithm according to a finish flag signal.

公开(公告)号：US20210349599A1

公开(公告)日：2021-11-11

申请号：US17313796

申请日：2021-05-06

Applicant: NOVATEK MICROELECTRONICS CORP.

Inventor： Hung-Hsiang Chen ,  Chang-Hung Chen ,  Huang-Chin Tang

IPC: G06F3/041 ,  G09G3/3225

Abstract: The disclosure provides a method for driving an OLED touch-and-display device, a driving circuit, and an OLED touch-and-display device. The method includes: dividing each display frame into at least one display period and at least one touch detection period which are alternated; during each display period, generating sequentially-shifted gate driving signals and sequentially-shifted light-emission control signals, and sequentially applying the sequentially-shifted gate driving signals to at least a part of gate driving lines, and sequentially applying the sequentially-shifted light-emission control signals to at least a part of light-emission control lines; during each touch detection period, suspending generation of sequentially-shifted gate driving signals without suspending generation of sequentially-shifted light-emission control signals; and during a period when a gate driving signal for each row of pixels is of active level, maintaining a light-emission control signal for the row of pixels at inactive level.