Display panel detection method and display panel detection device for transmitting power and clock signals

• US 10,699,614 B2
• Filed: 12/14/2017
• Issued: 06/30/2020
• Est. Priority Date: 12/16/2016
• Status: Active Grant

• Current Assignee: Chongqing HKC Optoelectronics Technology Co., Ltd. (Shenzhen Huike Investment Holding Co., Ltd.), HKC Corporation Limited (Shenzhen Huike Investment Holding Co., Ltd.)
• Original Assignee: HKC Corporation Limited (Shenzhen Huike Investment Holding Co., Ltd.)
• Inventors: Chen, Wei
• Primary Examiner(s): Ritchie, Darlene M
• Application Number:
  US16/312,554
• Publication Number:
  US 20190333429A1
• Time in Patent Office: 929 Days
• CPC Class Codes: G02F 1/136204 Arrangements to prevent high voltage or static electricity failures
• CPC Class Codes: G06T 2207/30121 CRT, LCD or plasma display
• CPC Class Codes: G06T 7/001 using an image reference approach
• CPC Class Codes: G09G 2300/0439 Pixel structures
• CPC Class Codes: G09G 2310/08 Details of timing specific for flat panels, other than clock recovery
• CPC Class Codes: G09G 2330/04 Display protection
• CPC Class Codes: G09G 2330/12 Test circuits or failure detection circuits included in a display system, as permanent part thereof
• CPC Class Codes: G09G 3/006 Electronic inspection or testing of displays and display drivers, e.g. of LED or LCD displays testing individual LED's G01R31/2635; testing lamps G01R31/44; testing of optical features of LCD displays G02F1/1309
• CPC Class Codes: G09G 3/20 for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
• CPC Class Codes: G09G 3/3688 suitable for active matrices only
• CPC Class Codes: H04N 17/004 for digital television systems

Abstract

A display panel detection method and a display panel detection device, the detection method comprising the following steps: storing an image used for detection in a source driver circuit board of a display panel; electrically connecting a power board generating a power signal directly to the source driver circuit board; transmitting a power signal and a clock signal to the source driver circuit board, the clock signal being directly generated by a source driver chip of the source driver circuit board; connecting a data transmission port of the display panel to a serial interface of a computer system, a detection program for comparing a sample image and an image being configured in the computer system; and comparing the pixel consistency of the image and the sample image so as to produce a comparison result.

Claims

1. A display panel detection method, comprising the following steps:

storing a picture for detection into a source driver circuit board of a display panel;

electrically connecting a power board with the source driver circuit board, wherein the power board generates a power signal;

transmitting the power signal and a clock signal to the source driver circuit board, the clock signal being directly generated by a source driver chip of the source driver board;

connecting a data transmission port of the display panel with a serial interface of a computer system, the computer system including a sample picture and a picture comparison detection program;

comparing pixel consistency of the picture and the sample picture to produce a comparison result;

wherein the power board is connected with first, second and third connectors of the source driver circuit board respectively through first, second and third connection lines,

wherein the power signal is transmitted to the third connector through the third connection line, and the source driver chip is connected to the third connector through a connection bar, and

wherein the data transmission port transmits a digital picture signal of the picture to the serial interface, and the computer system restores the digital picture signal to the picture.

2. The method according to claim 1, wherein the picture is stored in the source driver chip.

3. The method according to claim 1, wherein the display panel further includes a gate driver chip.

4. The method according to claim 1, wherein an oscillator is integrated on the source driver chip, and the clock signal is generated by the oscillator.

5. The method according to claim 1, wherein the power signal is a DC voltage signal.

6. The method according to claim 1, wherein the power signal is an AC voltage signal.

7. The method according to claim 1, wherein the power signal includes a ground signal, a high voltage signal, and a low voltage signal.

8. A display panel detection method, comprising the following steps:

storing a picture for detection into a source driver chip of a source driver circuit board of a display panel, the display panel including a gate driver chip;

electrically connecting a power board with the source driver circuit board, the power board generating a power signal;

transmitting the power signal and a clock signal to the source driver circuit board, the clock signal being generated by a source driver chip of the source driver board;

connecting a data transmission port of the display panel with a serial interface of a computer system, the computer system being provided with a sample picture and a picture comparison detection program;

comparing pixel consistency of the picture and the sample picture to produce a comparison result;

wherein the power board is connected with first, second and third connectors of the source driver circuit board respectively through first, second and third connection lines,

wherein the source driver chip is connected to the third connector through a connection bar, an oscillator is integrated on the source driver chip, and the clock signal is generated by the oscillator,

and

wherein the data transmission port transmits a digital picture signal of the picture to the serial interface, and the computer system restores the digital picture signal to the picture.

9. The method according to claim 8, wherein the power signal is a DC voltage signal.

10. The method according to claim 8, wherein the power signal is an AC voltage signal.

11. A display panel detection system, comprising:

a picture storage device configured to store a picture for detection, the picture storage device being stored in a source driver circuit board of a display panel;

a power board configured to generate a power signal, the power board being electrically connected with the source driver circuit board directly;

a clock signal device disposed on a source driver chip of the source driver circuit board, configured to generate a clock signal, the clock signal device and the source driver circuit board being electrically connected; and

a computer system having a serial interface connected with a data transmission port of the display panel, the computer system being provided with a sample picture and a picture comparison detection program for comparing pixel consistency of the picture and the sample picture to produce a comparison result;

wherein the power board is connected with first, second and third connectors of the source driver circuit board respectively through first, second and third connection lines, and the power signal is transmitted to the third connector through the third connection line;

the source driver chip is connected to the third connector through a connection bar, and

wherein the data transmission port transmits a digital picture signal of the picture to the serial interface, and the computer system restores the digital picture signal to the picture.

12. The system according to claim 11, wherein the display panel further includes a gate driver chip.

13. The system according to claim 11, wherein the clock signal device is a clock signal board.

14. The system according to claim 11, wherein the clock signal device is a circuit board integrated with an oscillator, and the clock signal is generated by the oscillator.

15. The system according to claim 11, wherein the power signal is a DC voltage signal.

16. The system according to claim 11, wherein the power signal is an AC voltage signal.

17. The system according to claim 11, wherein the power signal includes a ground signal, a high voltage signal, and a low voltage signal.