IP Library Granted Patent US 7,283,195
Granted Patent B2
US 7,283,195 · App. 11/000,891 · Granted Oct 16, 2007

Method of fabricating color filter substrate for liquid crystal display device having patterned spacers

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Quick Facts
Patent No.
US 7,283,195
App. No.
11/000,891
Granted
Oct 16, 2007
Kind
B2
Abstract

A method of fabricating a liquid crystal display device including a liquid crystal layer between a first substrate and a second substrate includes attaching a transfer film onto a surface of one of the substrates, the surface facing the liquid crystal layer, the transfer film including a transfer material layer contacting the surface; transferring portions of the transfer material layer to the surface; and removing the transfer film except the transferred portions of the transfer material layer to form patterned spacers.

Claims (22)

1. A method of fabricating a liquid crystal display device including a liquid crystal layer between a first substrate and a second substrate and including a black matrix on an inner surface of one of the first and second substrates, the method comprising:

attaching a transfer film onto a surface of one of the substrates, the transfer film including a transfer material layer contacting the surface;

transferring portions of the transfer material layer to the surface; and

removing the transfer film except the transferred portions of the transfer material layer to form patterned spacers,

wherein each of the pattern spacers corresponds to the black matrix.

2. The method according to claim 1 , wherein transferring the portions of the transfer material layer includes fixing the portions of the transfer material layer to the surface of the substrate of the one of the substrates.

3. The method according to claim 1 , wherein transferring the portions of the transfer material layer includes applying heat to the portions of the transfer material layer.

4. The method according to claim 1 , wherein the patterned spacers correspond to the transferred portions of the transfer material layer.

5. The method according to claim 1 , including:

providing the transfer film with a conversion layer for converting light into heat and for supplying the converted heat to the transfer material layer; and providing the transfer film with a support layer for supporting the conversion layer.

6. The method according to claim 5 , further comprising exposing a surface of the transfer film using an ultra violet light through a mask having a transmissive portion and a shielding portion.

7. The method according to claim 6 , wherein the transmissive portion of the mask corresponds to a portion of a black matrix.

8. The method according to claim 5 , further comprising irradiating a laser light on a portion of the transfer film for forming the patterned spacers.

9. The method according to claim 8 , wherein the laser light is irradiated on the portion of the transfer film corresponding to a portion of a black matrix.

10. The method according to claim 8 , wherein irradiating the laser light includes performing a rectilinear reciprocating movement with a laser head.

11. The method according to claim 1 , wherein a thickness of the transfer material layer corresponds to a cell gap of the liquid crystal display device.

12. The method according to claim 11 , wherein the thickness of the transfer material layer is within a range of about 2 to 8 μm.

13. The method according to claim 1 , further comprising forming an overcoat layer for improving a planarization on the substrate prior to attaching the transfer film, the transfer film directly contacting the surface of the overcoat layer.

14. The method according to claim 1 , further comprising forming a common electrode on the substrate prior to attaching the transfer film, the transfer film directly contacting the surface of the common electrode.

15. The method according to claim 1 , wherein the transfer material layer includes a colorless transparent material.

16. The method according to claim 15 , wherein the colorless transparent material includes one of benzocyclobutene (BCB), photo acryl, cytop and perfluorocyclobutene (PFCB).

17. A liquid crystal display device fabricated using the method of claim 1 , the liquid crystal display device comprising a seal pattern at a periphery of one of the first and second substrates for bonding the first and second substrates to each other.

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 Dec 2, 2004
From: RYU, SANG-CHUL
To: LG.PHILIPS LCD CO., LTD.
Reel/Frame 016076/0113 →