公开(公告)号：US11030928B2

公开(公告)日：2021-06-08

申请号：US16745315

申请日：2020-01-16

Applicant: Novatek Microelectronics Corp.

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

IPC: G09G3/00 ,  G09G3/3275 ,  G09G3/3266 ,  G09G3/3291

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：US10586480B2

公开(公告)日：2020-03-10

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：US10068528B2

公开(公告)日：2018-09-04

申请号：US15259052

申请日：2016-09-08

Applicant: Novatek Microelectronics Corp.

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

IPC: G09G3/3258 ,  G09G3/3275 ,  G09G3/3266

Abstract: An apparatus and a method for sensing a display panel are provided. The apparatus includes a gate driving circuit and a sensing circuit. The gate driving circuit may scan the scan-lines during a plurality of scan-line periods within a frame period. The sensing circuit is coupled to a plurality of pixel circuits. A corresponding scan-line period of the scan-line periods is divided into a test data period and a display data period. In the test data period, the sensing circuit controls a corresponding pixel circuit to receive the test data, and the sensing circuit senses the electrical characteristic of the corresponding pixel circuit. In the display data period, the sensing circuit controls the corresponding pixel circuit to receive the display data from a corresponding data line, and the sensing circuit does not sense the corresponding pixel circuit.

公开(公告)号：US20170352305A1

公开(公告)日：2017-12-07

申请号：US15238728

申请日：2016-08-17

Applicant: NOVATEK Microelectronics Corp.

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

IPC: G09G3/20 ,  G09G3/3225 ,  G09G3/3275

CPC classification number: G09G3/2085 ,  G09G3/3225 ,  G09G3/3275 ,  G09G2310/027 ,  G09G2310/0291 ,  G09G2310/0297 ,  G09G2320/0233 ,  G09G2320/043 ,  G09G2330/10 ,  G09G2330/12

Abstract: An external compensation method for devices in a panel which comprises a plurality of sub-pixels, includes programming a first device in a first sub-pixel among the plurality of sub-pixels via a first line and sensing the first device via a second line during a first period; and programming a second device in a second sub-pixel among the plurality of sub-pixels via the second line and sensing the second device via the first line or a third line during a second period.

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.

公开(公告)号：US10388207B2

公开(公告)日：2019-08-20

申请号：US15238728

申请日：2016-08-17

Applicant: NOVATEK Microelectronics Corp.

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

IPC: G09G3/32 ,  G09G3/20 ,  G09G3/3225 ,  G09G3/3275

Abstract: An external compensation method for devices in a panel which comprises a plurality of sub-pixels, includes programming a first device in a first sub-pixel among the plurality of sub-pixels via a first line and sensing the first device via a second line during a first period; and programming a second device in a second sub-pixel among the plurality of sub-pixels via the second line and sensing the second device via the first line or a third line during a second period.