# US 9,753,334 B2 · Display device and method of manufacturing the same

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- Number: US 9,753,334 B2
- Document ID: US9753334B2
- Status: Granted
- Kind: B2
- Application number: 15/063,549
- Filed: 2016-03-08
- Published: 2016-06-30
- Granted: 2017-09-05
- Earliest claimed: 2013-11-26
- Assignees: Electronics and Telecommunications Research Institute
- Applicants: Electronics and Telecommunications Research Institute
- Inventors: Gi Heon Kim; Hojun Ryu; Won Jae Lee; Yong Hae Kim; Chul Am Kim
- Web page: https://patentgrep.com/patent/US9753334B2

## CPC

- G02F 1/1339: Gaskets; Spacers; Sealing of cells
- G02F 1/1333: Constructional arrangements; {Manufacturing methods}(G02F1/135, G02F1/136 take precedence)
- G02F 1/133377: {Cells with plural compartments or having plurality of liquid crystal microcells partitioned by walls, e.g. one microcell per pixel}
- G02F 1/13718: {based on a change of the texture state of a cholesteric liquid crystal}
- G02F 2203/34: Colour display without the use of colour mosaic filters
- G02F: OPTICAL DEVICES OR ARRANGEMENTS FOR THE CONTROL OF LIGHT BY MODIFICATION OF THE OPTICAL PROPERTIES OF THE MEDIA OF THE ELEMENTS INVOLVED THEREIN; NON-LINEAR OPTICS; FREQUENCY-CHANGING OF LIGHT; OPTICAL LOGIC ELEMENTS; OPTICAL ANALOGUE/DIGITAL CONVERTERS

## 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.

## Claims

### Claim 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.

### Claim 2 (depends on 1)

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.

### Claim 3 (depends on 2)

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.

### Claim 4 (depends on 3)

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.

### Claim 5 (depends on 1)

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