Display device and method of manufacturing the same

Patent metadata

Field	Value
Publication number	US-9753334-B2
Application number	US-201615063549-A
Country	US
Kind code	B2
Filing date	Mar 8, 2016
Priority date	Nov 26, 2013
Publication date	Sep 5, 2017
Grant date	Sep 5, 2017

Abstract

Provided are a display device and a method of manufacturing the same. The display device includes a first substrate, a second substrate facing the first substrate and separated from the first substrate, a plurality of liquid crystal parts disposed between the first and second substrates, and separated in a horizontal direction from each other, spacers for separating the liquid crystal parts between the first and the second substrates, and immobilization patterns disposed in each of the liquid crystal parts, and including an optically active material.

First claim

What is claimed is:

1. A display device, comprising:
a first substrate;
a second substrate facing the first substrate with a gap therebetween;
a plurality of spacers separating the gap between the first and the second substrates to form a plurality of spaces along a horizontal direction;
a plurality of immobilization patterns, each formed in one of the spaces and including an optically active material; and
a plurality of liquid crystal parts each formed in one of the spaces, the plurality of liquid crystal parts being separated from one another by the spacers and the immobilization patterns in the horizontal direction, wherein
the plurality of liquid crystal parts respectively correspond to the plurality of immobilization patterns, and
each of the liquid crystal parts covers both side and top surfaces of one of the immobilization patterns corresponding thereto.

2. The display device of claim 1 , wherein each of the liquid crystal parts includes one of
a first liquid crystal part including cholesteric liquid crystals selectively reflecting red color;
a second liquid crystal part including cholesteric liquid crystals selectively reflecting green color; and
a third liquid crystal part including cholesteric liquid crystals selectively reflecting blue color.

3. The display device of claim 2 , wherein the immobilization patterns comprise:
a first immobilization pattern in the first liquid crystal part, and having a first volume;
a second immobilization pattern in the second liquid crystal part, and having a second volume greater than the first volume; and
a third immobilization pattern in the third liquid crystal part, and having a third volume greater than the second volume.

4. The display device of claim 3 , wherein
the first, second and third immobilization patterns respectively have a first height, a second height and a third height, and
the third height is larger than the second height, which is larger than the first height.

5. The display device of claim 1 , wherein each of the immobilization patterns comprises a polymer for immobilizing the optically active material.

Assignees

• Electronics & Telecommunications Res Inst

Inventors

• Kim Gi Heon
• Ryu Hojun
• Lee Won Jae
• Kim Yong Hae
• Kim Chul Am

Classifications

• G02F1/1339 Primary

  Gaskets; Spacers; Sealing of cells · CPC title

• G02F2203/34

  Colour display without the use of colour mosaic filters · CPC title

• G02F1/133377 Primary

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

• G02F1/13718

  based on a change of the texture state of a cholesteric liquid crystal · CPC title

• G02F1/1333

  Constructional arrangements; {Manufacturing methods}(G02F1/135, G02F1/136 take precedence) · CPC title