公开(公告)号：US11004389B2

公开(公告)日：2021-05-11

申请号：US16526992

申请日：2019-07-30

Applicant: Novatek Microelectronics Corp.

Inventor： Hua-Gang Chang

IPC: G09G3/3233

Abstract: A panel control device and an operation method thereof are provided. The panel control device includes a display port and a control circuit. The display port receives video data from a former stage device. The control circuit performs an anti-burn-in process on the video data according to a processing degree. After the former stage device issues a panel self-refresh entering command to the panel control device, the panel control device enters a panel self-refresh mode, and the control circuit increases the processing degree according to the panel self-refresh entering command, so as to perform the anti-burn-in process on the video data according to the increased processing degree.

公开(公告)号：US20200005694A1

公开(公告)日：2020-01-02

申请号：US16566870

申请日：2019-09-10

Applicant: Novatek Microelectronics Corp.

Inventor： Chun-Chieh Lin ,  Shang-I Liu ,  Hua-Gang Chang

IPC: G09G3/00 ,  G09G3/3275 ,  G09G3/3266

Abstract: An apparatus and a method for sensing a display panel are provided. The apparatus includes a source driving circuit and a sensing circuit. The source driving circuit is coupled to data lines to drive the pixel circuits according to a display period comprising frame periods. The sensing circuit is coupled to a plurality of pixel circuits. The sensing circuit senses characteristics of the pixel circuits in the test data periods of the display period. The test data periods are periodically arranged in the display period. In each of the test data periods, a corresponding pixel circuit receives test data, and the sensing circuit senses the electrical characteristic of the corresponding pixel circuit. In the scan-line periods of each of the frame periods, the corresponding pixel circuit receives display data from a corresponding data line, and the sensing circuit does not sense the corresponding pixel circuit.

公开(公告)号：US10453368B2

公开(公告)日：2019-10-22

申请号：US16242004

申请日：2019-01-08

Applicant: Novatek Microelectronics Corp.

Inventor： Chun-Chieh Lin ,  Shang-I Liu ,  Hua-Gang Chang

IPC: G09G3/00 ,  G09G3/3275 ,  G09G3/3266

Abstract: An apparatus and a method for sensing a display panel are provided. The apparatus includes a source driving circuit and a sensing circuit. The source driving circuit is coupled to data lines to drive the pixel circuits according to a display period comprising frame periods. The sensing circuit is coupled to a plurality of pixel circuits. The sensing circuit senses characteristics of the pixel circuits in the test data periods of the display period. The test data periods are periodically arranged in the display period. In each of the test data periods, a corresponding pixel circuit receives test data, and the sensing circuit senses the electrical characteristic of the corresponding pixel circuit. In the scan-line periods of each of the frame periods, the corresponding pixel circuit receives display data from a corresponding data line, and the sensing circuit does not sense the corresponding pixel circuit.

公开(公告)号：US10210783B2

公开(公告)日：2019-02-19

申请号：US16112775

申请日：2018-08-27

Applicant: Novatek Microelectronics Corp.

Inventor： Chun-Chieh Lin ,  Shang-I Liu ,  Hua-Gang Chang

IPC: G09G3/00 ,  G09G3/3266 ,  G09G3/3275 ,  G09G3/3233

Abstract: An apparatus and a method for sensing a display panel are provided. The apparatus includes a source driving circuit and a sensing circuit. The source driving circuit is coupled to data lines to drive the pixel circuits according to a scan-line period for scanning one of the scan lines. The sensing circuit is coupled to a plurality of pixel circuits. The sensing circuit senses characteristics of the pixel circuits according to the scan-line period for scanning one of the scan lines, wherein the scan-line period comprises a display data period and a test data period. In the test data period, a corresponding pixel circuit receives test data, and the sensing circuit senses the electrical characteristic of the corresponding pixel circuit. In the display data period, the corresponding pixel circuit receives display data from a corresponding data line, and the sensing circuit does not sense the corresponding pixel circuit.

公开(公告)号：US20180366046A1

公开(公告)日：2018-12-20

申请号：US16112775

申请日：2018-08-27

Applicant: Novatek Microelectronics Corp.

Inventor： Chun-Chieh Lin ,  Shang-I Liu ,  Hua-Gang Chang

IPC: G09G3/00 ,  G09G3/3266 ,  G09G3/3275 ,  G09G3/3233

CPC classification number: G09G3/006 ,  G09G3/3233 ,  G09G3/3266 ,  G09G3/3275 ,  G09G2310/0286 ,  G09G2310/08 ,  G09G2320/043 ,  G09G2330/12

Abstract: An apparatus and a method for sensing a display panel are provided. The apparatus includes a source driving circuit and a sensing circuit. The source driving circuit is coupled to data lines to drive the pixel circuits according to a scan-line period for scanning one of the scan lines. The sensing circuit is coupled to a plurality of pixel circuits. The sensing circuit senses characteristics of the pixel circuits according to the scan-line period for scanning one of the scan lines, wherein the scan-line period comprises a display data period and a test data period. In the test data period, a corresponding pixel circuit receives test data, and the sensing circuit senses the electrical characteristic of the corresponding pixel circuit. In the display data period, the corresponding pixel circuit receives display data from a corresponding data line, and the sensing circuit does not sense the corresponding pixel circuit.

公开(公告)号：US10074341B2

公开(公告)日：2018-09-11

申请号：US15484107

申请日：2017-04-10

Applicant: Novatek Microelectronics Corp.

Inventor： Hsueh-Yen Yang ,  Hua-Gang Chang ,  Chun-Chieh Lin

IPC: G09G3/30 ,  G09G5/10 ,  G06F1/16 ,  G09G3/3208 ,  G06T5/00

CPC classification number: G09G5/10 ,  G06F1/1652 ,  G06F1/1677 ,  G06T5/002 ,  G06T2207/20024 ,  G09G3/2003 ,  G09G3/3208 ,  G09G2320/045 ,  G09G2320/046 ,  G09G2320/048 ,  G09G2320/0666 ,  G09G2320/103 ,  G09G2360/16 ,  G09G2380/02

Abstract: An image processing method and a display device thereof are provided. The method is adapted to a display panel with a display area. The image processing method includes the following steps. Whether original images to be displayed on a plurality of sub-areas of the display area are still is analyzed and determined. When the original image in a current sub-area is still, a time length of the original image being still is recorded. The current sub-area is one of the sub-areas. Processing levels corresponding to a plurality of image processing schemes are determined based on the time length. Overall or partial luminance (luma) of the original image in the current sub-area is gradually reduced by the image processing schemes with the determined processing levels, and a corresponding luma-reduced image is displayed on the current sub-area.