IP Library Granted Patent US 7,163,445
Granted Patent B2
US 7,163,445 · App. 11/251,803 · Granted Jan 16, 2007

Apparatus and method for fabricating liquid crystal display panel

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Quick Facts
Patent No.
US 7,163,445
App. No.
11/251,803
Granted
Jan 16, 2007
Kind
B2
Abstract

An apparatus and method for fabricating a liquid crystal display panel are disclosed. In case of the single mode that liquid crystal display panels are fabricated with the same size on a large glass substrate, defective unit liquid crystal display panels are kept and discarded not to proceed with a follow-up process. Thus, a material waste is restrained and a yield can be improved. Meanwhile, in case of the multi-mode that liquid crystal display panels are fabricated with difference sizes on a large glass substrate, sub-models are kept, and then after completing the process for the main models, a follow-up process if performed on the sub-models. Thus, use efficiency of the glass substrate can be maximized to improve a productivity and a unit cost of the product can be reduced.

Claims (35)

1. A method for fabricating a liquid crystal display panel comprising:

determining whether a liquid crystal display panel is a single mode or a multi-mode;

for a single mode panel, determining whether a cut unit liquid crystal display panel is non-defective or defective;

sorting out any non-defective unit liquid crystal display panel;

grinding a marginal portion of any non-defective unit liquid crystal display panel;

finally checking the cut section of the non-defective unit liquid crystal display panel;

determining whether the cut unit liquid crystal display panel is a main model or a sub-model of the multi-mode;

grinding a marginal portion of the unit liquid crystal display panel of the main model;

finally checking the cut section of the unit liquid crystal display panel of the main model;

holding the unit liquid crystal display panel of the sub-model in a buffering cassette;

determining whether the processing of the main model has been completed;

grinding a marginal portion of the unit liquid crystal display panel of the sub-model if the processing of the main model has been completed; and

finally checking the cut section of the unit liquid crystal display panel of the sub-model.

2. The method of claim 1 , wherein unit liquid crystal display panels in the single mode have substantially the same size.

3. The method of claim 1 , wherein unit liquid crystal panels in the multi-mode have at least two different sizes.

4. A method of fabricating a liquid crystal display panel comprising:

determining a mode of a liquid crystal display panel as one of a single mode or a multi-mode;

for a single panel, determining whether a cut unit liquid crystal display panel is non-defective or defective;

sorting out any non-defective unit liquid crystal display panel;

grinding a marginal portion of any non-defective unit liquid crystal display panel;

finally checking the non-defective unit liquid crystal display panel;

for a multi-mode panel, determining a model of the cut unit liquid crystal display panel is one of a main model or a sub-model;

for a main model, determining whether a cut unit liquid crystal display panel is non-defective or defective;

sorting out and discarding any defective unit liquid crystal display panel of the main model;

grinding a marginal portion of the non-defective unit liquid crystal display panel of the main model;

finally checking the non-defective unit liquid crystal display panel of the main model;

holding the unit liquid crystal display panel of the sub-model in a buffering cassette;

determining whether the processing of the main model has been completed;

for a sub model, determining whether a cut unit liquid crystal display panel of the is non-defective or defective if the processing of the main model has been completed;

sorting out and discarding any defective unit liquid crystal display panels of the sub model;

grinding a marginal portion of the non-defective unit liquid crystal display panel of the sub-model; and

finally checking the unit liquid crystal display panel of the sub-model.

5. The method of claim 4 , wherein unit liquid crystal display panels in the single mode have substantially the same size.

6. The method of claim 4 , wherein unit liquid crystal panels in the multi-mode have at least two different sizes.

7. The method of claim 4 , wherein the defective liquid crystal display panels of the single mode are collected in a second buffering cassette.

Assignments (2)
CHANGE OF NAME Recorded Oct 27, 2008
From: LG.PHILIPS LCD CO., LTD.
To: LG DISPLAY CO., LTD.
Reel/Frame 021763/0212 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 18, 2005
From: UH, JI-HEUM; SHIN, SANG-SUN
To: LG.PHILIPS LCD CO., LTD.
Reel/Frame 017111/0629 →