公开(公告)号：US20190156757A1

公开(公告)日：2019-05-23

申请号：US16198687

申请日：2018-11-21

Applicant: Novatek Microelectronics Corp.

Inventor： Hua-Gang Chang ,  Shang-I Liu

IPC: G09G3/3258 ,  H01L27/32 ,  G09G3/00 ,  H01L27/15

Abstract: A driving apparatus for driving a display panel including a connection pad, a selecting circuit, a data driving circuit and a detection circuit is provided. The selecting circuit is electrically connected to a data line of the display panel through the connection pad. The data driving circuit outputs a data voltage to a pixel circuit of the display panel through the selecting circuit and the connection pad in a display stage. The detection circuit provides a detection signal to a light-emitting element of the pixel circuit through the selecting circuit and the connection pad in a detection stage, and detects a resultant signal with respect to an electric characteristic of the light-emitting element of the pixel circuit in the detection stage.

公开(公告)号：US20180204539A1

公开(公告)日：2018-07-19

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: G09G5/10 ,  G06F1/16 ,  G09G3/3208

CPC classification number: G09G3/2003 ,  G06F1/1652 ,  G06F1/1677 ,  G06T5/002 ,  G06T2207/20024 ,  G09G3/3208 ,  G09G5/10 ,  G09G2320/045 ,  G09G2320/0626 ,  G09G2320/0666

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：US20210035498A1

公开(公告)日：2021-02-04

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：US20200152104A1

公开(公告)日：2020-05-14

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 ,  G09G3/3266 ,  G09G3/3275

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：US10482820B2

公开(公告)日：2019-11-19

申请号：US15187809

申请日：2016-06-21

Applicant: NOVATEK Microelectronics Corp.

Inventor： Chun-Chieh Lin ,  Hua-Gang Chang ,  Hsueh-Yen Yang ,  Shang-Yu Su ,  Feng-Ting Pai

IPC: G09G3/3258

Abstract: A method of compensating luminance of an organic light-emitting diode (OLED) operated with a transistor in a pixel cell of a display panel includes measuring a first parameter of the transistor and a parameter of the OLED, and generating a lookup table accordingly; converting original display data to target display data according to the lookup table; outputting the target display data to the pixel cell; and compensating a second parameter of the transistor when the target display data is received by the pixel cell.

公开(公告)号：US20190139471A1

公开(公告)日：2019-05-09

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

CPC classification number: G09G3/006 ,  G09G3/3266 ,  G09G3/3275 ,  G09G3/3291 ,  G09G2300/0814 ,  G09G2310/0286 ,  G09G2320/041 ,  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 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：US10074298B2

公开(公告)日：2018-09-11

申请号：US15408426

申请日：2017-01-18

Applicant: Novatek Microelectronics Corp.

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

IPC: G09G3/30 ,  G09G3/20

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：US20180204498A1

公开(公告)日：2018-07-19

申请号：US15408426

申请日：2017-01-18

Applicant: Novatek Microelectronics Corp.

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

IPC: G09G3/20

CPC classification number: G09G3/2003 ,  G06F1/1652 ,  G06F1/1677 ,  G06T5/002 ,  G06T2207/20024 ,  G09G3/3208 ,  G09G5/10 ,  G09G2320/045 ,  G09G2320/0626 ,  G09G2320/0666

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：US20180068618A1

公开(公告)日：2018-03-08

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

CPC classification number: G09G3/3258 ,  G09G3/3233 ,  G09G3/3266 ,  G09G3/3275 ,  G09G2300/0426 ,  G09G2300/043 ,  G09G2300/0819 ,  G09G2310/0286 ,  G09G2310/08 ,  G09G2320/043 ,  G09G2320/045

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：US20170365202A1

公开(公告)日：2017-12-21

申请号：US15187809

申请日：2016-06-21

Applicant: NOVATEK Microelectronics Corp.

Inventor： Chun-Chieh Lin ,  Hua-Gang Chang ,  Hsueh-Yen Yang ,  Shang-Yu Su ,  Feng-Ting Pai

IPC: G09G3/20 ,  G09G3/3258

CPC classification number: G09G3/3258 ,  G09G3/3233 ,  G09G2300/0819 ,  G09G2300/0861 ,  G09G2310/0251 ,  G09G2310/0262 ,  G09G2320/0233 ,  G09G2320/0285 ,  G09G2320/029 ,  G09G2320/043 ,  G09G2320/045

Abstract: A method of compensating luminance of an organic light-emitting diode (OLED) operated with a transistor in a pixel cell of a display panel includes measuring a first parameter of the transistor and a parameter of the OLED, and generating a lookup table accordingly; converting original display data to target display data according to the lookup table; outputting the target display data to the pixel cell; and compensating a second parameter of the transistor when the target display data is received by the pixel cell.