公开(公告)号：US20240153970A1

公开(公告)日：2024-05-09

申请号：US18155760

申请日：2023-01-18

Applicant: Novatek Microelectronics Corp.

Inventor： Ya-Hsiang Tai ,  Yi-Cheng Yuan ,  Chen-Yu Lin

IPC: H01L27/146 ,  H04N25/78

CPC classification number: H01L27/14612 ,  H01L27/14621 ,  H04N25/78

Abstract: The invention provides a display device and a display panel. The display device includes the display panel and a reading circuit. The display panel includes an upper substrate, a lower substrate, a thin-film transistor (TFT) layer, and a photosensitive circuit. The TFT layer is disposed between the upper substrate and the lower substrate. A plurality of TFTs of a pixel array of the display panel are disposed in the TFT layer. The photosensitive circuit is disposed in the TFT layer to sense an ambient light. The reading circuit is coupled to the photosensitive circuit to read a sensing result.

公开(公告)号：US11978393B1

公开(公告)日：2024-05-07

申请号：US18325014

申请日：2023-05-29

Applicant: NOVATEK Microelectronics Corp.

Inventor： Shing-Ron Huang

IPC: G09G3/32

CPC classification number: G09G3/32 ,  G09G2300/0819 ,  G09G2300/0852 ,  G09G2310/061 ,  G09G2310/08

Abstract: A pixel circuit includes a first transistor, a second transistor, a first capacitor, a third transistor, a second capacitor, and a fourth transistor. The first transistor is configured to receive a power voltage. The second transistor is configured to receive a data voltage and is coupled to a gate terminal of the first transistor. The first capacitor is coupled between the gate terminal of the first transistor and a source terminal of the first transistor. The third transistor is coupled between the source terminal of the first transistor and a light-emitting element. The second capacitor is coupled between the source terminal of the first transistor and a reference voltage. The fourth transistor is coupled between the source terminal of the first transistor and a reset voltage.

公开(公告)号：US11961584B2

公开(公告)日：2024-04-16

申请号：US17859010

申请日：2022-07-07

Applicant: Novatek Microelectronics Corp.

Inventor： Wu Wei Lin

IPC: G11C7/00 ,  G11C7/10 ,  G11C7/14

CPC classification number: G11C7/1069 ,  G11C7/1006 ,  G11C7/1039 ,  G11C7/14

Abstract: The present invention provides a readout integrated circuit and an operation method thereof. The readout integrated circuit includes a readout circuit, a line buffer and a communication interface circuit. The readout circuit reads out a plurality of row sensing results of a plurality of sensor rows of a sensor. The line buffer is coupled to the readout circuit for temporarily storing a current row sensing result of a current sensor row of the sensor. The communication interface circuit is coupled to the line buffer. After the current row sensing result of the current sensor row is temporarily stored into the line buffer, the communication interface circuit outputs the current row sensing result in real time to a host circuit.

公开(公告)号：US20240119916A1

公开(公告)日：2024-04-11

申请号：US17963997

申请日：2022-10-11

Applicant: Novatek Microelectronics Corp.

Inventor： Cheng Hsien Li ,  Yuan-Po Cheng

IPC: G09G5/12 ,  G09G5/18

CPC classification number: G09G5/12 ,  G09G5/18

Abstract: An electronic device includes an application processor and a display control circuit. The display control circuit may output a (tearing effect) TE signal to the application processor and receive an image frame from the application processor. A data processing circuit of the display control circuit generates a notification signal when the data processing circuit is ready to receive the image frame from the application processor. The timing controller generates the TE signal having a first frequency during a period from a first time point when the notification signal is received to a second time point when the application processor starts transmitting the image frame to the data processing circuit. The first frequency is greater than a reference frequency based on an output frame rate of the display control circuit.

公开(公告)号：US11953523B2

公开(公告)日：2024-04-09

申请号：US17539170

申请日：2021-11-30

Applicant: NOVATEK Microelectronics Corp.

Inventor： Tzu-Wei Lin ,  Hung-Kai Chen ,  Feng-Lin Chan

IPC: G01R1/30 ,  H03G3/30

CPC classification number: G01R1/30 ,  H03G3/30 ,  H03G2201/103

Abstract: An analog front-end (AFE) circuit, configured to be coupled to a sensor having a plurality of sensing units, includes a plurality of sensing circuits and a plurality of multiplexers. Each of the plurality of multiplexers is coupled between one of the plurality of sensing units and at least two of the plurality of sensing circuits.

公开(公告)号：US11942037B1

公开(公告)日：2024-03-26

申请号：US18318645

申请日：2023-05-16

Applicant: Novatek Microelectronics Corp.

Inventor： Zi-Yi Lian ,  Yen-Tao Liao

IPC: G09G3/3233

CPC classification number: G09G3/3233 ,  G09G2320/0247 ,  G09G2340/0435

Abstract: An organic light emitting diode (OLED) display control circuit and a control method thereof are provided. The OLED control circuit includes a counting unit, a judgment unit, a remainder calculation unit and a signal compensation unit. The counting unit counts display lines of a current frame according to a vertical synchronization signal to generate a first count value. The judgment unit compares the first count value and a second count value to generate a judgment result. The second count value represents the number of display lines of a previous frame preceding to the current frame. The remainder calculation unit calculates a remainder generated by dividing the first count value by a period of an emission control signal. The signal compensation unit adjusts the emission control signal to compensate for an incomplete period of the emission control signal occurring in the end of the current frame period.

公开(公告)号：US11935452B2

公开(公告)日：2024-03-19

申请号：US18170541

申请日：2023-02-17

Applicant: Novatek Microelectronics Corp.

Inventor： Huan-Teng Cheng ,  Ting-Hsuan Hung ,  Tzu-Wen Hsieh ,  Wei-Lun Shih ,  Huang-Chin Tang

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

CPC classification number: G09G3/20 ,  G06F3/0412 ,  G06V40/13 ,  G06V40/1318 ,  G09G2310/0272

Abstract: An electronic circuit for operating with a display panel including touch sensors and fingerprint sensors is provided. The electronic circuit includes a first circuit, a second circuit, a third circuit, a first switch circuit and a control circuit. The first circuit generates display driving signals for driving the display panel. The second circuit receives fingerprint sensing signals from the fingerprint sensors. The third circuit determines a touch information according to touch sensing signals from the touch sensors. The first switch circuit includes a plurality of first switch units, each of the first switch units includes a first switch element and a second switch element. The control circuit controls the first switch circuit to transmit the display driving signals in a first time interval, controls the first switch circuit to transmit the fingerprint sensing signals in a second time interval, and controls the third circuit to receive the fingerprint sensing signals in a third time interval.

公开(公告)号：US20240087356A1

公开(公告)日：2024-03-14

申请号：US18510688

申请日：2023-11-16

Applicant: Novatek Microelectronics Corp.

Inventor： Cho-Hsuan Jhang ,  Chao-Yu Meng ,  Shih-Cheng Chen ,  Chih-Peng Hsia

IPC: G06V40/13 ,  H04N23/57

CPC classification number: G06V40/1312 ,  G06V40/1306 ,  H04N23/57

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：US11929043B1

公开(公告)日：2024-03-12

申请号：US17976893

申请日：2022-10-31

Applicant: NOVATEK Microelectronics Corp.

Inventor： Chun-Hsiang Wang

IPC: G09G3/34 ,  G06F3/041

CPC classification number: G09G3/3426 ,  G09G2320/0626 ,  G09G2320/0646

Abstract: A detection circuit is used for a display controller configured to generate a plurality of backlight data according to a plurality of image data. The detection circuit includes a resize circuit and a comparison circuit. The resize circuit is configured to receive the plurality of image data and convert the plurality of image data into a plurality of region data. The comparison circuit, coupled to the resize circuit, is configured to: receive at least one first region data from the resize circuit; receive at least one first backlight data corresponding to the at least one first region data from the display controller; compare the at least one first region data with the at least one first backlight data to generate a comparison result; and output a control signal to control an output setting of the display controller according to the comparison result.

公开(公告)号：US11928295B2

公开(公告)日：2024-03-12

申请号：US17805466

申请日：2022-06-05

Applicant: NOVATEK Microelectronics Corp.

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

IPC: G06F3/044 ,  G06F3/01 ,  G06F3/041

CPC classification number: G06F3/0442 ,  G06F3/016 ,  G06F3/0416 ,  G06F3/0441 ,  G06F2203/04112

Abstract: A data transmission method includes: transmitting a plurality of first transmitting signals from a plurality of transmitting areas of the first touch device; determining, by the second touch device, whether a first sensing signal corresponding to the plurality of first transmitting signals is received; if yes selecting, by the second touch device, a receiving area in a first overlap range according to signal intensity of the first sensing signal; transmitting a second transmitting signal from the receiving area; determining, by the first touch device, whether a second sensing signal corresponding to the second transmitting signal is received; if yes, selecting, by the first touch device, a first transmitting area in a second overlap range from the plurality of transmitting areas according to signal intensity of the second sensing signal; determining a final transmitting area and a final receiving area; and performing a data transmission process.