IP Library › Granted Patent US 9,001,302
Granted Patent B2
US 9,001,302 · App. 13/525,727 · Granted Apr 7, 2015

Liquid crystal display and manufacturing method thereof

Inventors: Gwan-Soo Kim (Asan-si, KR); Chul Huh (Yongin-si, KR); Dong-Uk Kang (Suwon-si, KR)
Assignee: Samsung Display Co., Ltd.
G02F1/13394G02F1/136209G02F2001/136222
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Quick Facts
Patent No.
US 9,001,302
App. No.
13/525,727
Granted
Apr 7, 2015
Kind
B2
Abstract

A manufacturing method of a liquid crystal display includes: forming a thin film transistor on a first substrate; forming a color filter on the thin film transistor; forming a pixel electrode on the color filter; and forming a light blocking member including a column spacer protruded from the light blocking member on the color filter. The forming the light blocking member uses a mask including a first region, a second region, and a third region. The first region passes light generated from a light exposer, the second region includes a blocking filter layer which selectively passes the light generated from the light exposer, and the third region blocks the light generated from the light exposer.

Claims (45)

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

forming a thin film transistor on a first substrate;

forming a color filter on the thin film transistor;

forming a pixel electrode on the color filter; and

forming a light blocking member including a column spacer which protrudes from an upper surface thereof, on the color filter,

wherein the column spacer is formed in single body with the light blocking member, and

wherein the forming the light blocking member uses a mask including a first region, a second region, and a third region, wherein

the first region passes light generated from a light exposer,

the second region includes a blocking filter layer which passes light of a predetermined wavelength band and which blocks light of wavelength bands other than that of the predetermined wavelength band, among wavelength bands of the light generated from the light exposer, and

the third region blocks the light generated from the light exposer.

2. The method of claim 1 , wherein

the forming the light blocking member including the column spacer includes:

coating a photoresist on the color filter,

exposing the photoresist by using the mask, and

developing the photoresist to form the column spacer at a position corresponding to the first region and to form the light blocking member at a position corresnonding to the second region.

3. The method of claim 2 , wherein in the exposing the photoresist, the light passing through the first region and the second region exposes the photoresist with the same energy.

4. The method of claim 3 , wherein

the photoresist includes a binder, a monomer, an initiator, a coloring agent, and a solvent, and

the initiator includes initiators of at least two kinds having different absorption wavelength bands.

5. The method of claim 4 , wherein

the coloring agent includes a black-based material.

6. The method of claim 5 , wherein

the coloring agent includes at least one selected from the group consisting of an organic pigment and an inorganic pigment.

7. The method of claim 6 , wherein

the initiator includes at least one initiator absorbing light of the predetermined wavelength band passing through the blocking filter layer.

8. The method of claim 1 , further comprising

forming an organic layer between the thin film transistor and the pixel electrode.

9. The method of claim 1 , further comprising:

forming a second substrate which faces the first substrate; and

forming a liquid crystal layer including a liquid crystal and an alignment polymer, between the first substrate and the second substrate,

wherein the alignment polymer is formed by light-irradiating the liquid crystal, and an alignment aid.

10. The method of claim 9 , wherein

the pixel electrode includes a plurality of minute slits.

11. A method of manufacturing a liquid crystal display, the method comprising:

forming a thin film transistor on a first substrate;

forming a color filter on the thin film transistor;

forming a pixel electrode on the color filter; and

forming a light blocking member including a column spacer which protrudes from an upper surface thereof, on the color filter,

wherein the forming the light blocking member comprises:

coating a photoresist on the color filter, the photoresist including two initiators having different absorption wavelength bands,

exposing the coated photoresist using a mask including a first region, a second region, and a third region, wherein

the first region passes light generated from a light exposer,

the second region includes a blocking filter layer which selectively passes the light generated from the light exposer, and

the third region blocks the light generated from the light exposer, and

developing the photoresist to form the column spacer at a position corresponding to the first region and to form the light blocking member at a position corresponding to the second region.

Assignments (1)
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Jun 18, 2012
From: KIM, GWAN-SOO; HUH, CHUL; KANG, DONG-UK
To: SAMSUNG DISPLAY CO., LTD.
Reel/Frame 028394/0314 →
Priority Claims (1)
KR 10-2011-0095746 · Sep 22, 2011 · national
Continuity (1)
Related Publication 20130077031A1 · Mar 28, 2013