LIQUID CRYSTAL DISPLAY AND METHOD FOR MANUFACTURING THE SAME

• US 20110122358A1
• Filed: 10/18/2010
• Published: 05/26/2011
• Est. Priority Date: 11/25/2009
• Status: Abandoned Application

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: Lee, Hee-Keun, Choi, Nak-Cho, KIM, Jang-Kyum
• Application Number:
  US12/906,962
• Publication Number:
  US 20110122358A1
• Time in Patent Office: Days
• US Class Current: 349/156
• CPC Class Codes: G02F 1/133371 Cells with varying thickness of the liquid crystal layer
• CPC Class Codes: G02F 1/13718 based on a change of the texture state of a cholesteric liquid crystal

Abstract

A method of manufacturing a liquid crystal display including a cholesteric liquid crystal and having a first insulation substrate and a second insulation substrate that face each other, the method comprising: forming an organic layer on the first insulation substrate or the second insulation substrate; pressing a mold onto the organic layer; hardening the organic layer; and removing the mold so as to form a cell gap formation pattern in the organic layer, the cell gap formation pattern including first, second, and third portions each having different thicknesses.

Claims

1. A method of manufacturing a liquid crystal display including a cholesteric liquid crystal and having a first insulation substrate and a second insulation substrate that face each other, the method comprising:

forming an organic layer on the first insulation substrate or the second insulation substrate;

pressing a mold onto the organic layer;

hardening the organic layer; and

removing the mold so as to form a cell gap formation pattern in the organic layer, the cell gap formation pattern including first, second, and third portions each having different thicknesses.

2. The method of claim 1, wherein

the first insulation substrate includes a gate line, a data line intersecting the gate line, a thin film transistor connected to the gate line and the data line, and a pixel electrode connected to the thin film transistor, and

the organic layer is formed on the thin film transistor.

3. The method of claim 2, wherein

the organic layer includes a black color pigment.

4. The method of claim 1, wherein

the second insulation substrate includes an overcoat and a common electrode formed on the overcoat, and

the organic layer is the overcoat.

5. The method of claim 1, wherein

the organic layer includes a material that is hardened by at least one of heat and ultraviolet radiation.

6. A liquid crystal display comprising:

a first substrate;

a cell gap formation pattern formed on the first substrate;

a pixel electrode formed on the cell gap formation pattern;

a second substrate facing the first substrate;

a common electrode formed on the second substrate;

a cholesteric liquid crystal layer positioned between the common electrode and the pixel electrode; and

a partition dividing the cholesteric liquid crystal layer into regions,

wherein the cell gap formation pattern has first, second, and third portions each having different thicknesses.

7. The liquid crystal display of claim 6, wherein

the cell gap formation pattern includes an organic material.

8. The liquid crystal display of claim 7, wherein

the organic material is hardened by at least one of heat and ultraviolet radiation.

9. The liquid crystal display of claim 6, wherein

the cell gap formation pattern includes an organic material, the organic material including a black color pigment.

10. The liquid crystal display of claim 9, wherein

the organic material is hardened by at least one of heat and ultraviolet radiation.

11. The liquid crystal display of claim 9, wherein

the partition includes a same material as the cell gap formation pattern.

12. The liquid crystal display of claim 6, wherein

the thickness of the first portion is greater than the thickness of the second portion, and the thickness of the second portion is greater than the thickness of the third portion.

13. The liquid crystal display of claim 12, wherein

a cell gap of the third portion is greater than a cell gap of the second portion, and the cell gap of the second portion is greater than a cell gap of the first portion.

14. The liquid crystal display of claim 13, wherein

the first portion corresponds to a red region, the second portion corresponds to a green region, and the third portion corresponds to a blue region.

15. The liquid crystal display of claim 6, further comprising:

a gate line formed on the first substrate;

a data line intersecting the gate line; and

a thin film transistor connected to the gate line and the data line,

wherein the pixel electrode is connected to the thin film transistor, and

the cell gap formation pattern is formed on the thin film transistor.

16. The liquid crystal display of claim 15, wherein

the cell gap formation pattern includes a black color pigment.

17. The liquid crystal display of claim 15, further comprising

an overcoat formed on the cell gap formation pattern.