公开(公告)号：US20240054968A1

公开(公告)日：2024-02-15

申请号：US17883634

申请日：2022-08-09

Applicant: Novatek Microelectronics Corp.

Inventor： Fu-Jung Wen ,  Heng-Yao Lin ,  Yen-Tao Liao ,  Jen-Ta Yang ,  Yu-Hung Su

IPC: G09G3/36

CPC classification number: G09G3/3607 ,  G09G2320/0242 ,  G09G2320/0247 ,  G09G2310/061 ,  G09G2340/0435

Abstract: The disclosure provides a display driving device and a display control device and an operation method thereof. The display control device includes a data analyzing circuit and a data compensation circuit. The data analyzing circuit performs arithmetic operation on multiple sub-pixel data output by a target driving channel of a source driver in a current frame to obtain a resultant value corresponding to the target driving channel. The data compensation circuit determines at least one compensation grayscale value corresponding to the resultant value. The compensation grayscale value is to be displayed by the target driving channel in a vertical blank period of a frame period in which the current frame is displayed. The target driving channel of the source driver outputs at least one compensation voltage corresponding to the at least one compensation grayscale value in the vertical blank period of the frame period.

公开(公告)号：US11862065B2

公开(公告)日：2024-01-02

申请号：US17692190

申请日：2022-03-11

Applicant: Novatek Microelectronics Corp.

Inventor： Grace Li ,  Jen-Ta Yang ,  Yen-Tao Liao ,  Yu-Hung Su

IPC: G09G3/20

CPC classification number: G09G3/2096 ,  G09G2310/08 ,  G09G2340/0435

Abstract: A timing control device for the display panel includes a control circuit. The control circuit is configured to generate a plurality of gate scanning control signals and a data transmission control signal. In response to that a display refresh rate changes from a first frequency to a second frequency, the control circuit adjusts the plurality of gate scanning control signals to generate a plurality of adjusted gate scanning control signals, or adjusts the data transmission control signal to generate an adjusted data transmission control signal, for driving a display panel under the second frequency as the display refresh rate.

公开(公告)号：US10943518B2

公开(公告)日：2021-03-09

申请号：US16527054

申请日：2019-07-31

Applicant: Novatek Microelectronics Corp.

Inventor： Yu-Hung Su ,  Cheng-Yu Tsai ,  Jung-Chieh Cheng

IPC: G09G3/20

Abstract: A timing control circuit and an operating method thereof are provided. The timing control circuit includes a first clock generating circuit, a second clock generating circuit and a control timing generating circuit. The control timing generating circuit is coupled to the first clock generating circuit to receive a first clock signal. The control timing generating circuit is coupled to the second clock generating circuit to receive a second clock signal. The control timing generating circuit starts timing from a first reference time point according to the first clock signal for determining a second reference time point. The control timing generating circuit starts timing from the second reference time point according to the second clock signal for determining a time point of a trailing edge of a current line pulse of a scan reference signal, wherein the current line pulse corresponds to a current scan line of a display panel.

公开(公告)号：US20210035479A1

公开(公告)日：2021-02-04

申请号：US16527054

申请日：2019-07-31

Applicant: Novatek Microelectronics Corp.

Inventor： Yu-Hung Su ,  Cheng-Yu Tsai ,  Jung-Chieh Cheng

IPC: G09G3/20

Abstract: A timing control circuit and an operating method thereof are provided. The timing control circuit includes a first clock generating circuit, a second clock generating circuit and a control timing generating circuit. The control timing generating circuit is coupled to the first clock generating circuit to receive a first clock signal. The control timing generating circuit is coupled to the second clock generating circuit to receive a second clock signal. The control timing generating circuit starts timing from a first reference time point according to the first clock signal for determining a second reference time point. The control timing generating circuit starts timing from the second reference time point according to the second clock signal for determining a time point of a trailing edge of a current line pulse of a scan reference signal, wherein the current line pulse corresponds to a current scan line of a display panel.

公开(公告)号：US11887552B1

公开(公告)日：2024-01-30

申请号：US17883634

申请日：2022-08-09

Applicant: Novatek Microelectronics Corp.

Inventor： Fu-Jung Wen ,  Heng-Yao Lin ,  Yen-Tao Liao ,  Jen-Ta Yang ,  Yu-Hung Su

IPC: G09G3/36

CPC classification number: G09G3/3607 ,  G09G2310/061 ,  G09G2320/0242 ,  G09G2320/0247 ,  G09G2340/0435

Abstract: The disclosure provides a display driving device and a display control device and an operation method thereof. The display control device includes a data analyzing circuit and a data compensation circuit. The data analyzing circuit performs arithmetic operation on multiple sub-pixel data output by a target driving channel of a source driver in a current frame to obtain a resultant value corresponding to the target driving channel. The data compensation circuit determines at least one compensation grayscale value corresponding to the resultant value. The compensation grayscale value is to be displayed by the target driving channel in a vertical blank period of a frame period in which the current frame is displayed. The target driving channel of the source driver outputs at least one compensation voltage corresponding to the at least one compensation grayscale value in the vertical blank period of the frame period.

公开(公告)号：US20220293028A1

公开(公告)日：2022-09-15

申请号：US17692190

申请日：2022-03-11

Applicant: Novatek Microelectronics Corp.

Inventor： Grace Li ,  Jen-Ta Yang ,  Yen-Tao Liao ,  Yu-Hung Su

IPC: G09G3/20

Abstract: A timing control device for the display panel includes a control circuit. The control circuit is configured to generate a plurality of gate scanning control signals and a data transmission control signal. In response to that a display refresh rate changes from a first frequency to a second frequency, the control circuit adjusts the plurality of gate scanning control signals to generate a plurality of adjusted gate scanning control signals, or adjusts the data transmission control signal to generate an adjusted data transmission control signal, for driving a display panel under the second frequency as the display refresh rate.

公开(公告)号：US11373607B2

公开(公告)日：2022-06-28

申请号：US16820427

申请日：2020-03-16

Applicant: NOVATEK MICROELECTRONICS CORP.

Inventor： Yu-Hung Su ,  Vans Shih ,  Yen-Tao Liao

IPC: G09G3/36

Abstract: A driving method of display device for a display device capable of reducing flicker due to refresh rate variation includes: determining whether a processor of the display device is generating a vertical blank interval of an image signal, wherein said vertical blank interval is next to a last frame data period thereof, and the last frame data period is for a last frame to be displayed by a display panel; and activating a data line of the display panel with a balancing voltage related to data of a line of the last frame when the processor is generating the vertical blank interval, wherein a plurality of sub-pixels of the display panel connects to the data line, the data of the line of the last frame are sequentially transmitted to the plurality of sub-pixels in the last frame data period for displaying the last frame. Said display device is also disclosed.

公开(公告)号：US11087663B1

公开(公告)日：2021-08-10

申请号：US16875885

申请日：2020-05-15

Applicant: NOVATEK MICROELECTRONICS CORP.

Inventor： Yu-Hung Su ,  Grace Li ,  Yen-Tao Liao

IPC: G09G3/20

Abstract: A driving method of display device configured to be applied to a display device capable of reducing the difference in brightness between areas with different widths of a display panel includes: receiving an input signal by a processor to generate an image signal and an original data enable signal, with the image signal and the original data enable signal configured to control the display panel; and generating a gate control signal and a transmission signal by the controller based on the image signal and the original data enable signal for a scan line driver and a data line driver respectively. The gate control signal comprises a plurality of enable periods for activating the plurality of scan lines respectively, and widths of the enable periods for activating scan lines with different lengths are different. Said display device and a display driving circuit are also disclosed.