IP Library › Granted Patent US 7,365,560
Granted Patent B2
US 7,365,560 · App. 11/008,140 · Granted Apr 29, 2008

Apparatus and method for testing liquid crystal display panel

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Quick Facts
Patent No.
US 7,365,560
App. No.
11/008,140
Granted
Apr 29, 2008
Kind
B2
Abstract

An apparatus and a method testing liquid crystal display panel which are able to test whether or not burr remains on longer sides and on shorter sides of a unit liquid crystal display panel using first to fourth testing bars in a touch method, and able to measure a distance between the longer sides and a distance between the shorter sides of the unit liquid crystal display panel.

Claims (17)

1. A method of testing a unit liquid crystal display panel, comprising:

loading the unit liquid crystal display panel having first facing sides and second facing sides on a table;

measuring a distance of first facing sides of the unit liquid crystal display panel using a first testing bar; and

testing for burr on the first facing sides using the first testing bar and a second testing bar.

2. The method of claim 1 , wherein the measuring and testing the first facing sides is conducted at the same time.

3. The method of claim 2 , wherein the measuring and testing the first facing sides are both conducted using the first and second testing bars.

4. The method of claim 1 , further comprising:

measuring a distance of second facing sides of the unit liquid crystal display panel using a third testing bar; and

testing for burr on the second facing sides using the third testing bar and a fourth testing bar.

5. The method of claim 4 , wherein the measuring and testing the second facing sides is conducted at the same time.

6. The method of claim 4 , wherein the measuring and testing the second facing sides are both conducted using the third and fourth testing bars.

7. The method of claim 1 , wherein the method of testing the unit liquid crystal display panel is a method of testing the unit liquid crystal display panel for inferior quality.

8. A method of testing a unit liquid crystal display panel, comprising:

loading the unit liquid crystal display panel having first facing sides and second facing sides on a table; and

measuring a distance of first facing sides of the unit liquid crystal display panel and testing for burr on the first facing sides using a first pair of testing bars.

9. The method of claim 8 , further comprising measuring a distance of second facing sides of the unit liquid crystal display panel and testing for burr on the second facing sides using second pair of testing bars.

10. The method of claim 8 , wherein the method of testing the unit liquid crystal display panel is a method of testing the unit liquid crystal display panel for inferior quality.

Assignments (1)
CHANGE OF NAME Recorded Oct 17, 2008
From: LG.PHILIPS LCD CO., LTD.
To: LG DISPLAY CO., LTD.
Reel/Frame 021754/0045 →