IP Library Granted Patent US 7,083,900
Granted Patent B2
US 7,083,900 · App. 11/075,948 · Granted Aug 1, 2006

Method for manufacturing a liquid crystal display device

Assignee: LG Electronics Inc.
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Quick Facts
Patent No.
US 7,083,900
App. No.
11/075,948
Granted
Aug 1, 2006
Kind
B2
Abstract

A method for manufacturing an LCD including at least two stacked thin layers in which the upper thin film smoothly and completely covers the lower thin film includes the steps of coating a photo-resist on a patterned layer, patterning the photo-resist by exposing and developing the photo-resist with a mask which has lines and spaces in which a distance between the lines is smaller than a resolution of an exposure system used and etching the metal layer using the patterned photo-resist as a mask. The resulting photo-resist pattern has a comb shape.

Claims (56)

1. A method of manufacturing a semiconductor device comprising the steps of:

providing a substrate;

forming a first metal layer on the substrate;

forming a photoresist on the first metal layer; and

exposing and developing the photoresist using an exposure system and only a single mask having lines and spaces, and a ratio of a width of a line to a resolution of the exposure system ranges between approximately 3/10 and ½, and a ratio of a width of a space to a resolution of the exposure system ranges between approximately 1/10 and ½, the lines being branched out from a side portion of the mask, such that the photoresist has a pattern including a thick portion and a thin portion, the pattern being a comb shape.

2. The method of claim 1 , wherein the exposure system's resolution is 1 μm or less.

3. The method of claim 1 , wherein a ratio of a width of a line to a resolution of the exposure system is 1/3, and a ratio of a width of a space to a resolution of the exposure system is approximately 1/6.

4. A method of manufacturing a semiconductor device comprising the steps of:

providing a substrate;

forming a layer on the substrate;

forming a photoresist on the layer; and

performing a single masking step using an exposure system and a mask having lines and spaces, wherein a ratio of a width of a line to a resolution of the exposure system ranges between approximately 3/10 and ½ and a ratio of a width of a space to a resolution of the exposure system ranges between approximately 1/10 and ½, the lines being branched out from a side portion of the mask, the masking step being used to develop the photoresist such that the photoresist has a thick portion and a thin portion, the photoresist having a comb shape.

5. The method of claim 4 , wherein the exposure system's resolution is 1 μm or less.

6. The method of claim 4 , wherein a ratio of a width of a line to a resolution of the exposure system is 1/3, and a ratio of a width of a space to a resolution of the exposure system is approximately 1/6.

7. A method of manufacturing a liquid crystal display comprising the steps of:

providing a substrate;

forming a layer on the substrate;

forming a photoresist on the layer; and

exposing and developing the photoresist using an exposure system and only a single mask having lines and spaces, and a ratio of a width of a line to a resolution of the exposure system ranges between approximately 3/10 and ½, and a ratio of a width of a space to a resolution of the exposure system ranges between approximately 1/10 and ½, the lines being branched out from a side portion of the mask such that the photoresist has a pattern including a thick portion and a thin portion, the pattern being a comb shape.

8. The method of claim 7 , wherein the exposure system's resolution is 1 μm or less.

9. The method of claim 7 , wherein a ratio of a width of a line to a resolution of the exposure system is 1/3, and a ratio of a width of a space to a resolution of the exposure system is approximately 1/6.

10. A method of manufacturing a liquid crystal display comprising the steps of:

providing a substrate;

forming a layer on the substrate;

forming a photoresist on the layer; and

performing a single masking step using an exposure system and a mask having lines and spaces, and ratio of a width of a line to a resolution of the exposure system ranges between approximately 3/10 and ½, and a ratio of a width of a space to a resolution of the exposure system ranges between approximately 1/10 and ½, the lines being branched out from a side portion of the mask to develop the photoresist such that the photoresist has a thick portion and a thin portion, the photoresist being a comb shape.

11. The method of claim 10 , wherein the exposure system's resolution is 1 μm or less.

12. The method of claim 10 , wherein a ratio of a width of a line to a resolution of the exposure system is 1/3, and a ratio of a width of a space to a resolution of the exposure system is approximately 1/6.

13. A method of manufacturing a semiconductor device comprising the steps of:

providing a substrate;

forming a first metal layer on the substrate;

forming a photoresist on the first metal layer; and

exposing and developing the photoresist using an exposure system and only a single mask having lines and spaces, and a ratio of a width of a line to a resolution of the exposure system ranges between approximately 3/10 and ½, and a ratio of a width of a space to a resolution of the exposure system ranges between approximately 1/10 and ½, the lines being branched out from a side portion of the mask such that the photoresist has a pattern including a thick portion and a thin portion.

14. The method of claim 13 , wherein the exposure system's resolution is 1 μm or less.

15. The method of claim 13 , wherein a ratio of a width of a line to a resolution of the exposure system is 1/3, and a ratio of a width of a space to a resolution of the exposure system is approximately 1/6.

16. A method of manufacturing a semiconductor device comprising the steps of:

providing a substrate;

forming a layer on the substrate;

forming a photoresist on the layer; and

performing a single masking step using an exposure system and a mask having lines and spaces, and a ratio of a width of a line to a resolution of the exposure system ranges between approximately 3/10 and ½, and a ratio of a width of a space to a resolution of the exposure system ranges between approximately 1/10 and ½, the lines being branched out from a side portion of the mask, the masking step being used to develop the photoresist such that the photoresist has a thick portion and a thin portion.

17. The method of claim 16 , wherein the exposure system's resolution is 1 μm or less.

18. The method of claim 16 , wherein a ratio of a width of a line to a resolution of the exposure system is 1/3, and a ratio of a width of a space to a resolution of the exposure system is approximately 1/6.

19. A method of manufacturing a liquid crystal display comprising the steps of:

providing a substrate;

forming a layer on the substrate;

forming a photoresist on the layer; and

exposing and developing the photoresist using an exposure system and only a single mask having lines and spaces, and a ratio of a width of a line to a resolution of the exposure system ranges between approximately 3/10 and ½, and a ratio of a width of a space to a resolution of the exposure system ranges between approximately 1/10 and ½, the lines being branched out from a side portion of the mask such that the photoresist has a pattern including a thick portion and a thin portion.

20. The method of claim 19 , wherein the exposure system's resolution is 1 μm or less.

21. The method of claim 19 , wherein a ratio of a width of a line to a resolution of the exposure system is 1/3, and a ratio of a width of a space to a resolution of the exposure system is approximately 1/6.

22. A method of manufacturing a liquid crystal display comprising the steps of:

providing a substrate;

forming a layer on the substrate;

forming a photoresist on the layer; and

performing a single masking step using an exposure system and a mask having lines and spaces, and a ratio of a width of a line to a resolution of the exposure system ranges between approximately 3/10 and ½, and a ratio of a width of a space to a resolution of the exposure system ranges between approximately 1/10 and ½, the lines being branched out from a side portion of the mask to develop the photoresist such that the photoresist has a thick portion and a thin portion.

23. The method of claim 22 , wherein the exposure system's resolution is 1 μm or less.

24. The method of claim 22 , wherein a ratio of a width of a line to a resolution of the exposure system is 1/3, and a ratio of a width of a space to a resolution of the exposure system is approximately 1/6.

Assignments (3)
CHANGE OF NAME Recorded Sep 21, 2012
From: LG.PHILIPS LCD CO., LTD.
To: LG DISPLAY CO., LTD.
Reel/Frame 029028/0240 →
CORRECTIVE ASSIGNMENT TO CORRECT THE ASSIGNEE NAME PREVIOUSLY RECORDED ON REEL 016647 FRAME 0717. ASSIGNOR(S) HEREBY CONFIRMS THE ASSIGNEE NAME SHOULD BE LG.PHILIPS LCD CO., LTD. Recorded Sep 17, 2012
From: BAE, SUNG JOON
To: LG.PHILIPS LCD CO., LTD.
Reel/Frame 028995/0595 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 2, 2005
From: BAE, SUNG JOON
To: LG ELECTRONICS INC.
Reel/Frame 016647/0717 →
Priority Claims (1)
KR 1997-63559 · Nov 27, 1997 · national
Continuity (3)
Continuation In Part 1014195200 · May 10, 2002
Continuation 0920020000 · Nov 25, 1998
Related Publication 20050202349A1 · Sep 15, 2005