Liquid crystal display and method of manufacturing the same

Patent metadata

Field	Value
Publication number	US-9851598-B2
Application number	US-201414509484-A
Country	US
Kind code	B2
Filing date	Oct 8, 2014
Priority date	Jun 5, 2014
Publication date	Dec 26, 2017
Grant date	Dec 26, 2017

Abstract

A liquid crystal display according to an exemplary embodiment includes: a substrate; a thin film transistor disposed on the substrate; a pixel electrode connected to the thin film transistor; and color filters disposed to face the pixel electrode, wherein a plurality of microcavities are between the pixel electrode and the color filters, the microcavities form a liquid crystal layer including a liquid crystal material, the microcavities are divided by a partition portion, and the partition portion is formed by a color filter of one color among the color filters.

First claim

What is claimed is:

1. A method for manufacturing a liquid crystal display, comprising:
forming a thin film transistor on a substrate;
forming a pixel electrode connected to the thin film transistor;
forming a sacrificial layer with an open portion on the pixel electrode;
forming a first color filter on the sacrificial layer;
forming a second color filter on the sacrificial layer;
forming a third color filter on the sacrificial layer;
removing the sacrificial layer to form a plurality of microcavities;
injecting a liquid crystal material into the microcavities;
forming a capping layer to cover a liquid crystal injection hole of the microcavities; and
filling the open portion with one color filter among the first color filter, the second color filter, and the third color filter.

2. The method of claim 1 , wherein
the color filter filling the open portion forms the partition portion, and the partition portion defines the microcavities.

3. The method of claim 2 , wherein
the partition portion is formed along a direction that the data line connected to the thin film transistor extends.

4. The method of claim 3 , wherein
the first color filter, the second color filter, and the third color filter are formed of an island shape.

5. The method of claim 4 , further comprising
forming a lower insulating layer on the sacrificial layer.

6. The method of claim 5 , wherein
a boundary surface in which color filters neighboring each other among the first color filter, the second color filter, and the third color filter meet each other is disposed on the partition portion.

7. The method of claim 5 , wherein
a separation space of color filters neighboring each other among the first color filter, the second color filter, and the third color filter is formed on the partition portion, the method further comprising forming an upper insulating layer covering the separation space, and
the upper insulating layer includes an inorganic layer.

8. The method of claim 5 , wherein
the first color filter, the second color filter, and the third color filter respectively form a blue color filter, a red color filter, and a green color filter, and the blue color filter forms the partition portion.

9. The method of claim 2 , further comprising
forming an organic layer on the first color filter, the second color filter, and the third color filter.

10. The method of claim 9 , wherein
the first color filter, the second color filter, and the third color filter are formed to be separated from each other on the partition portion.

11. The method of claim 10 , wherein
the separation space of the first color filter, the second color filter, and the third color filter is filled with the organic layer.

12. The method of claim 11 , wherein
the first color filter forms the partition portion, and the first color filter is a blue color filter.

13. The method of claim 2 , further comprising:
forming an upper insulating layer on the first color filter, the second color filter, and the third color filter; and
patterning the upper insulating layer to form a liquid crystal injection hole formation region,
wherein the liquid crystal injection hole formation region is formed along a direction that a gate line connected to the thin film transistor extends.

Assignees

• Samsung Display Co Ltd

Inventors

• Kwon Pil Sook
• Lee Seon Uk
• Lee Jun Heui

Classifications

• G02F1/133514 Primary

  Colour filters · CPC title

• G02F1/133377

  Cells with plural compartments or having plurality of liquid crystal microcells partitioned by walls, e.g. one microcell per pixel · CPC title

• H01L27/124

  Electricity · mapped topic

• H01L27/1259

  Electricity · mapped topic

• G02F2001/136222

  Physics · mapped topic