公开(公告)号：US20190139497A1

公开(公告)日：2019-05-09

申请号：US16120460

申请日：2018-09-04

Applicant: Novatek Microelectronics Corp.

Inventor： Hua-Gang Chang ,  Kuei-Chung Chang

IPC: G09G3/3291 ,  G09G3/3283 ,  G09G3/3233 ,  G09G3/3258

Abstract: The invention provides a display panel driving circuit and a method for capturing error information thereof. The display panel driving circuit includes a driving circuit, a pixel circuit and a timing controller circuit. The method includes: obtaining LED error information indicating errors caused by an LED of the pixel circuit; driving the LED by the drive circuit to obtain LED and driving circuit error information; obtaining driving circuit error information according to the two error information. The timing controller circuit records the error information and compensates LED attenuation by using the error information.

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：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：US20190267340A1

公开(公告)日：2019-08-29

申请号：US16412430

申请日：2019-05-15

Applicant: Novatek Microelectronics Corp.

Inventor： Sheng-Tien Cho ,  Hua-Gang Chang

IPC: H01L23/00 ,  G09G3/00

Abstract: A manufacturing process for a micro-device panel including the following steps is provided. A plurality of micro-device sets are formed on a transferring substrate, and each of the plurality of micro-device sets has at least one micro-device. A plurality of receiving blocks are provided. The plurality of micro-device sets are respectively transferred from the transferring substrate onto the plurality of receiving blocks to form a plurality of building blocks by a transfer head. The plurality of building blocks are placed on a receiving substrate. Finally, the adjacent building blocks on the receiving substrate are connected by a plurality of connecting devices to form the micro-device panel.

公开(公告)号：US20180240931A1

公开(公告)日：2018-08-23

申请号：US15439961

申请日：2017-02-23

Applicant: Novatek Microelectronics Corp.

Inventor： Sheng-Tien Cho ,  Hua-Gang Chang

IPC: H01L33/00 ,  H01L21/66 ,  H01L27/15

CPC classification number: H01L24/00 ,  G09G3/006 ,  H01L2224/81

Abstract: A manufacturing process for a micro-device panel including the following steps is provided. A plurality of micro-device sets are formed on a transferring substrate, and each of the plurality of micro-device sets has at least one micro-device. A plurality of receiving blocks are provided. The plurality of micro-device sets are respectively transferred from the transferring substrate onto the plurality of receiving blocks to form a plurality of building blocks by a transfer head. The plurality of building blocks are placed on a receiving substrate. Finally, the adjacent building blocks on the receiving substrate are connected by a plurality of connecting devices to form the micro-device panel.

公开(公告)号：US11087434B1

公开(公告)日：2021-08-10

申请号：US16831792

申请日：2020-03-26

Applicant: NOVATEK Microelectronics Corp.

Inventor： Hua-Gang Chang ,  Chun-Wei Lu ,  Yu-Hsiung Yin

IPC: G06T1/60 ,  G09G3/20

Abstract: An image processing apparatus and an image processing method are provided. The image processing apparatus includes a first memory, a plurality of image processing circuits, a first image processing circuit and dithering circuit. The first memory is utilized for storing an input frame. The image processing circuits are utilized for sequentially performing respective image processing operations on the input frame to generate a first intermediate frame. The first image processing circuit is utilized for performing a first image processing operation on the first intermediate frame to generate a second intermediate frame and writing the second intermediate frame into the first memory. The dithering circuit is utilized for performing a dithering operation on the second intermediate frame transmitted from the first image processing circuit to generate a first output frame and performing the dithering operation on the second intermediate frame read from the first memory to generate a second output frame.

公开(公告)号：US10720106B2

公开(公告)日：2020-07-21

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 ,  G09G3/32 ,  H01L27/15 ,  G09G3/00

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：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.