IP Library Granted Patent US 7,727,577
Granted Patent B2
US 7,727,577 · App. 10/266,817 · Granted Jun 1, 2010

Apparatus and method for fabricating a liquid crystal display panel

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Quick Facts
Patent No.
US 7,727,577
App. No.
10/266,817
Granted
Jun 1, 2010
Kind
B2
Abstract

An apparatus for fabricating a liquid crystal display panel includes a vessel for containing a spacer material, an ink-jet device for jetting the spacer material across a space onto a substrate; and a heater for heating the ink-jet device. A method for fabricating a liquid crystal display panel includes the steps of aligning an ink-jet device filled with a spacer material relative to a substrate of a liquid crystal display device, jetting the spacer material from the ink-jet device across a space onto the substrate and heating the spacer material before the spacer material is jetted from the ink-jet device.

Claims (13)

1. A method for fabricating a liquid crystal display panel, comprising the steps of:

aligning an ink-jet device filled with a spacer material relative to a substrate of a liquid crystal display device;

heating the spacer material in the ink-jet device; jetting the spacer material from the ink-jet device across a space onto the substrate to form a bead having rounded edges that form a first contact angle with a horizontal surface of the substrate on which the bead is formed, the bead of the spacer material being in a partially cured state on the substrate; and

fully curing the bead of the spacer material to form a beaded spacer, wherein rounded edges of the beaded spacer form a second contact angle with the horizontal surface of the substrate on which the beaded spacer is formed, the second contact angle being substantially the same as the first contact angle;

wherein said step of heating is performed by positioning a heater around a nozzle of the ink-jet device and heating the spacer material in the nozzle to a first temperature, which is greater than a second temperature of the space; and

wherein the substrate has a third temperature that is less than the second temperature during said jetting of the spacer material.

2. The method as claimed in claim 1 , further comprising the steps of:

cooling the spacer material in the space; and

cooling the spacer material with the substrate.

3. The method as claimed in claim 2 , wherein the step of curing includes radiating an ultraviolet ray onto the spacer material.

4. The method as claimed in claim 1 , wherein the spacer material includes solid content material.

5. The method as claimed in claim 1 , wherein the spacer material is provided on an area corresponding to a black matrix.

6. The method as claimed in claim 1 , wherein the spacer is provided on an area other than on a pixel electrode.

Assignments (2)
CHANGE OF NAME Recorded Jun 19, 2008
From: LG.PHILIPS LCD CO., LTD.
To: LG DISPLAY CO., LTD.
Reel/Frame 021147/0009 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 9, 2002
From: JUN, JAE HONG; KIM, YONG BUM
To: LG.PHILIPS LCD CO., LTD.
Reel/Frame 013376/0250 →