System and method for testing a display device

• US 20060015282A1
• Filed: 07/06/2005
• Published: 01/19/2006
• Est. Priority Date: 07/15/2004
• Status: Abandoned Application

• Current Assignee: Hon Hai Precision Industry Co., Ltd.
• Original Assignee: Hon Hai Precision Industry Co., Ltd.
• Inventors: Tian, Zhong-Wu, Lu, Xin, Li, Jun-Jian, Hsieh, Kuan-Hong
• Application Number:
  US11/175,770
• Publication Number:
  US 20060015282A1
• Time in Patent Office: Days
• US Class Current: 702/108
• 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

Abstract

A display device testing system includes a video signal outputting apparatus (10), a remote controller (20), a back board (30) and a display device (40). The video outputting apparatus outputs video signals which contain one or more testing samples provided for testing the display device to the display device. The remote controller generates control signals to control the display device to display the testing samples. The back board includes an interface. The interface receives the control signals from the controller, combines the control signals with the video signals into mixed signals, and transmits the mixed signals to the display device to obtain a test result. The test result is sent back to the remote controller via the back board for evaluating the performances of the display device. A related method is also disclosed.

Claims

1. A system for testing a display device, comprising:

a controller for generating control signals to control the display device to display predetermined information; and

a back board comprising an interface for receiving the control signals from the controller, combining the control signals with video signals containing one or more testing samples into mixed signals, and transmitting the mixed signals to the display device to obtain a test result.

2. The display device testing system as claimed in claim 1, further comprising a video signal outputting apparatus for supplying the video signals to the display device via the back board.

3. The display device testing system as claimed in claim 1, wherein the control signals are wireless signals.

4. The display device testing system as claimed in claim 1, wherein the control signals generated by the controller contain instructions to control the display device to display testing samples in correspondence to testing items set by the controller.

5. The display device testing system as claimed in claim 1, wherein the control signals generated by the controller contain instructions to control the display device to obtain one or more test results.

6. The display device testing system as claimed in claim 5, wherein the controller is adapted for comparing the test result with a standard reference to generate an analysis result.

7. The display device testing system as claimed in claim 1, wherein the back board further comprises a transmission apparatus for communication with the controller.

8. The display device testing system as claimed in claim 1, wherein the interface is a video signal output interface.

9. The display device testing system as claimed in claim 8, wherein the control signals and the video signals are combined by means of pins of the video signal output interface.

10. The display device testing system as claimed in claim 9, wherein the video signal output interface is a VGA (video graphic array) interface or a DVI (digital visual interface) interface.

11. The display device testing system as claimed in claim 10, wherein the control signals and the video signals are combined via 12^th and 15^th pins of the VGA interface or via 6^th and 7^th pins of the DVI interface.

12. The display device testing system as claimed in claim 1, wherein the display device comprises a display controller for controlling display of the testing samples.

13. The display device testing system as claimed in claim 1, wherein the display device comprises a display circuit for displaying the testing samples contained in the video signals.

14. A method for testing a display device, comprising:

(a) providing video signals containing one or more testing samples via a video signal outputting apparatus;

(b) generating and transmitting control signals containing instructions to control the display device to display the testing samples in correspondence to one or more testing items preset by an operator;

(c) receiving and combining the control signals with the video signals containing a testing sample to obtaining combined signals;

(d) transmitting the combined signals to the display device;

(e) displaying the testing sample and obtaining a test result of the testing items; and

(f) evaluating the test result of the display device.

15. The display device testing method as claimed in claim 14, wherein in step (f) the test result is compared with a standard reference to obtain an analysis result.

16. The display device testing method as claimed in claim 15, wherein step (f) further comprises the step of determining whether the display device is qualified based on the analysis result.

17. The display device testing method as claimed in claim 14, wherein in step (c) the control signals and the video signals are combined via pins of a video signal output interface.

18. The display device testing method as claimed in claim 17, wherein the video signal output interface is a is a VGA (video graphic array) interface or a DVI (digital visual interface) interface.

19. The display device testing system as claimed in claim 18, wherein the control signals and the video signals are combined via 12^th and 15^th pins of the VGA interface or via 6^th and 7^th pins of the DVI interface.

20. A method for testing a display device, comprising:

presetting testing items for said display device via preparing related video signals transmissible to said display device;

generating control signals transmissible to said display device for controlling display of said display device according to each of said testing items;

mixedly transmitting said video signals and control signals to said display device; and

evaluating said display of said display device according to testing results from said display device for said each of said testing items.