IP Library Granted Patent US 8,113,401
Granted Patent B2
US 8,113,401 · App. 12/822,847 · Granted Feb 14, 2012

Apparatus for cutting liquid crystal display panel

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Quick Facts
Patent No.
US 8,113,401
App. No.
12/822,847
Granted
Feb 14, 2012
Kind
B2
Abstract

An apparatus for cutting liquid crystal display panels is disclosed in the present invention. The apparatus includes at least one table receiving bonded mother substrates having a plurality of unit liquid crystal display panels, at least one cutting wheel forming a scribing line on a surface of the bonded mother substrates, and a suction unit coupled to the at least one cutting wheel and sucking in glass debris on the surface of the bonded mother substrates.

Claims (13)

1. A method of manufacturing a liquid crystal display comprising:

providing first and second mother substrates to bond each other, wherein the first mother substrate having a thin film transistor array substrates is loaded to be stacked on the second mother substrate having a color filter substrates;

loading the first and second mother substrates on first and second tables with covering a first space formed between the first and second tables;

forming first and second scribing lines on the surfaces of the first and second mother substrates with first and second cutting wheels;

suctioning debris caused by the forming step using first and second suction units, wherein the first and second suction units are disposed behind the first and second cutting wheels, respectively;

forming vertical air current at the first space by an air curtain provided above the first space; and

applying pressure onto the first scribing line or the second scribing line through a first roll, thereby sequentially cutting the first and second mother substrates.

2. The method of claim 1 , further comprising turning the cut first and second mother substrates by 90°.

3. The method of claim 2 , further comprising loading the turned first and second mother substrates on third and fourth tables with covering a second space formed between the third and fourth tables.

4. The method of claim 3 , further comprising forming third and fourth scribing lines on the surfaces of the first and second mother substrates with third and fourth cutting wheels.

5. The method of claim 4 , further comprising suctioning debris caused by the forming step using third and fourth suction units, wherein the third and fourth suction units are disposed behind the third and fourth cutting wheels, respectively.

6. The method of claim 5 , further comprising forming vertical air current at the second space by an air curtain provided above the second space.

7. The method of claim 6 , further comprising applying pressure onto the third scribing line or the fourth scribing line through a second roll, thereby sequentially cutting the first and second mother substrates.

Assignments (2)
CHANGE OF NAME Recorded Oct 25, 2011
From: LG. PHILLIPS LCD CO., LTD
To: LG DISPLAY CO., LTD.
Reel/Frame 027118/0426 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 24, 2010
From: CHOO, HUN-JUN; UH, JI-HEUM; SHIN, SANG-SUN; SHIM, HWA-SEOB; LIM, JONG-GO
To: LG.PHILIPS LCD CO., LTD.
Reel/Frame 024590/0917 →