公开(公告)号：US11630540B2

公开(公告)日：2023-04-18

申请号：US17676856

申请日：2022-02-22

Applicant: Novatek Microelectronics Corp.

Inventor： Yen-Cheng Cheng

IPC: G06F3/044 ,  H04B1/04 ,  G06F3/041

Abstract: The disclosure includes a touch display apparatus having AFE circuit that performs a noise cancellation of an AFE channel by utilizing noise signal received by a neighboring AFE channels. The first AFE channel includes a first integrator having an input terminal coupled to the first terminal receiving a first sensing signal. The second AFE channel includes an input amplifier. The second AFE channel is coupled between the input terminal of the first integrator in the first AFE channel and a second terminal connected to the touch panel. The second AFE channel is configured to generate a reversal input signal based on a second sensing signal received by the second terminal and couple the reversal input signal to a common node between the first integrator and the first terminal.

公开(公告)号：US11573653B2

公开(公告)日：2023-02-07

申请号：US17493865

申请日：2021-10-05

Applicant: Novatek Microelectronics Corp.

Inventor： Wei-Kang Tsai

IPC: G06F3/041

Abstract: The invention provides a touch display apparatus, a driver integrated circuit and a touch display panel. The driver integrated circuit includes a first pad, at least one second pad, a display driving channel, a touch sensing channel, a switching circuit, and a control circuit. The switching circuit is coupled to the display driving channel, the touch sensing channel and the first pad. In a display phase, the switching circuit and the routing circuit are controlled to couple the display driving channel to a data line of the touch display panel via the first pad, and a control signal for controlling the routing circuit is via the at least one second pad. In a touch phase, the switching circuit and the routing circuit are controlled to couple the touch sensing channel to a common electrode of the touch display panel via the first pad.

公开(公告)号：US20230010835A1

公开(公告)日：2023-01-12

申请号：US17369974

申请日：2021-07-08

Applicant: NOVATEK Microelectronics Corp.

Inventor： Jen-Yi Lin

IPC: G05F1/56

Abstract: An output circuit includes an output driver, a voltage regulator, a control circuit and a charge pump circuit. The output driver includes a signal input terminal, a signal output terminal and a first power receiving terminal. The voltage regulator is coupled to the first power receiving terminal of the output driver. The control circuit is coupled to the signal input terminal of the output driver. The charge pump circuit is coupled to the control circuit and the first power receiving terminal of the output driver.

公开(公告)号：US11551472B1

公开(公告)日：2023-01-10

申请号：US17749096

申请日：2022-05-19

Applicant: NOVATEK Microelectronics Corp.

Inventor： Ping Liu ,  Chi-Ting Chen

IPC: G06V40/12 ,  G06V40/13

Abstract: A method of fingerprint recognition for a fingerprint sensing circuit includes steps of: performing a first fingerprint sensing process including a first exposure operation and a first readout operation under a first light spot setting; and performing a second fingerprint sensing process including a second exposure operation and a second readout operation under a second light spot setting. Wherein, a host performs a first fingerprint recognition in response to the first fingerprint sensing process; and wherein, the second light spot setting and the first fingerprint recognition are performed simultaneously.

公开(公告)号：US11550416B2

公开(公告)日：2023-01-10

申请号：US17399058

申请日：2021-08-11

Applicant: Novatek Microelectronics Corp.

Inventor： Yu-Huang Chen ,  Feng-Lin Chan

IPC: G06F3/041 ,  G09G3/3275

Abstract: A touch display device and an operation method thereof are provided. The touch display device includes a touch display panel, a power management circuit, a display driving circuit, and a touch circuit. The display driving circuit drives the touch display panel to display an image, and notifies the power management circuit to perform a voltage adjustment of a common voltage supplied to the touch display panel in a voltage adjustment period. The touch circuit individually performs a touch sensing operation on multiple sensing lines of a touch sensing layer of the touch display panel, so as to generate multiple touch sensing data corresponding to the sensing lines. The touch circuit ignores the touch sensing data corresponding to the voltage adjustment period, or the touch circuit suspends performing the touch sensing operation on the sensing lines of the touch sensing layer during the voltage adjustment period.

公开(公告)号：US20230005441A1

公开(公告)日：2023-01-05

申请号：US17855606

申请日：2022-06-30

Applicant: Novatek Microelectronics Corp.

Inventor： Jhih-Siou Cheng ,  Hung-Ho Huang ,  Kang-Fan Yeh ,  Po-Hsiang Fang

IPC: G09G3/34 ,  G09G3/36

Abstract: A backlight driving device and an operating method thereof are provided to drive multiple backlight zones of a backlight panel. The backlight driving device includes an interface circuit and a driving circuit. The interface circuit receives main backlight data corresponding to a first backlight zone from a former stage device. The driving circuit drives the first backlight zone according to a main current level in a display refresh period of a backlight frame period, does not drive the first backlight zone in a demotion blur period which is prior to the display refresh period, and drives the first backlight zone according to a compensation current level in a vertical blanking period which succeeds the display refresh period. The driving circuit determines the main current level according to the main backlight data, and the compensation current level is lower than the main current level.

公开(公告)号：US11527195B2

公开(公告)日：2022-12-13

申请号：US17238179

申请日：2021-04-22

Applicant: NOVATEK Microelectronics Corp.

Inventor： Che-Wei Yeh ,  Keko-Chun Liang ,  Yu-Hsiang Wang ,  Yong-Ren Fang ,  Yi-Chuan Liu

IPC: G09G3/04 ,  G09G3/32

Abstract: A display control system includes a plurality of driver circuits connected in series. A driver circuit among the plurality of driver circuits includes a receiver, a duty cycle correction circuit and a transmitter. The receiver is configured to receive a first signal from a previous driver circuit among the plurality of driver circuits. The duty cycle correction circuit, coupled to the receiver, is configured to adjust a duty cycle of the first signal to generate a second signal. The transmitter, coupled to the duty cycle correction circuit, is configured to transmit the second signal to a next driver circuit among the plurality of driver circuits.

公开(公告)号：US20220383654A1

公开(公告)日：2022-12-01

申请号：US17886428

申请日：2022-08-11

Applicant: Novatek Microelectronics Corp.

Inventor： Wei-Lun Shih ,  Wu-Wei Lin ,  Huang-Chin Tang ,  Ting-Hsuan Hung

IPC: G06V40/13 ,  G09G3/20 ,  G06F3/041

Abstract: A chip capable of controlling a panel to perform fingerprint sensing is provided. Fingerprint sensing pixels of the panel are divided into a plurality of fingerprint zones along a first direction. The chip includes a control circuit. The control circuit provides multiple control signals for controlling the panel to perform fingerprint sensing. The control signals include multiple start pulse signals. The start pulse signals are used to indicate the selected fingerprint zone. The number of the fingerprint zones is greater than the number of the start pulse signals.

公开(公告)号：US11515239B2

公开(公告)日：2022-11-29

申请号：US17169553

申请日：2021-02-08

Applicant: Novatek Microelectronics Corp.

Inventor： Hong-Dyi Chang ,  Tai-Hung Lin ,  Jhih-Siou Cheng

IPC: H01L23/495 ,  H01L23/00 ,  H01L23/31

Abstract: A quad flat no-lead (QFN) package structure including a lead frame, a semiconductor die, and an encapsulating material. The lead frame includes a die pad and a plurality of contacts surrounding the die pad. The semiconductor die is disposed on the die pad and electrically connected to the plurality of contacts, wherein a shortest distance between the semiconductor die and a first side of the die pad is shorter than a shortest distance between the semiconductor die to a second side of the die pad, and the first side is opposite to the second side. The encapsulating material encapsulates the lead frame and the semiconductor die and partially exposing the plurality of contacts, wherein an aspect ratio of the QFN package is substantially equal to or greater than 3.

公开(公告)号：US20220375403A1

公开(公告)日：2022-11-24

申请号：US17881404

申请日：2022-08-04

Applicant: NOVATEK MICROELECTRONICS CORP.

Inventor： Jhih-Siou Cheng ,  Chun-Fu Lin ,  Po-Hsiang Fang ,  Ju-Lin Huang

IPC: G09G3/32

Abstract: The present disclosure relates to a driving method for a display device and a display device. The display device includes a display driver, the display driver includes a plurality of driving channels each of which drives corresponding display unit according to display data in a pulse width modulation manner within one frame period, the method comprises: selectively enabling, in each sub-frame subset among a plurality of different sub-frame subsets of the frame period, different channel subset among a plurality of channel subsets of the plurality of driving channels to drive corresponding display unit, wherein each channel subset of the plurality of channel subsets includes two or more driving channels among the plurality of driving channels.