# US 7,611,759 B2 · Polarizer, method of manufacturing the polarizer, apparatus for manufacturing the polarizer, and display apparatus having the polarizer

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- Number: US 7,611,759 B2
- Document ID: US7611759B2
- Status: Granted
- Kind: B2
- Application number: 11/102,813
- Filed: 2005-04-11
- Published: 2005-10-20
- Granted: 2009-11-03
- Earliest claimed: 2004-04-19
- Assignees: Samsung Electronics Co., Ltd.
- Inventors: Duck-Jong Suh; Bong-Sung Seo; Dae-Ho Choo
- Web page: https://patentgrep.com/patent/US7611759B2

## CPC

- G02F 1/133528: {Polarisers}
- C09K 19/54: Additives having no specific mesophase {characterised by their chemical composition}
- C09K 19/603: {Anthroquinonic}
- G02B 5/3016: {involving passive liquid crystal elements (optical properties of liquid crystals G02F1/0063; polarising elements associated with active liquid crystal devices G02F1/133528)}
- C09K 2323/031: Polarizer or dye
- 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
- C09K: MATERIALS FOR MISCELLANEOUS APPLICATIONS, NOT PROVIDED FOR ELSEWHERE
- G02B: OPTICAL ELEMENTS, SYSTEMS OR APPARATUS

## Abstract

The present invention provides a polarizer that includes a supporting member and a liquid crystal polarizing layer that is coated on the supporting member. The liquid crystal polarizing layer includes liquid crystal molecules that are arranged in a predetermined direction and polarizing molecules that are combined with the liquid crystal molecules in order to absorb light oscillating in predetermined direction. The resulting polarizer is thin and highly effective.

## Claims

### Claim 1

A polarizer, comprising:
a supporting member; and
a liquid crystal polarizing layer disposed on the supporting member,
wherein the liquid crystal polarizing layer comprises liquid crystal molecules and polarizing molecules,
wherein the liquid crystal molecules include at least one hydroxyl group and are arranged in a predetermined direction, and wherein the polarizing molecules are combined with the liquid crystal molecules to absorb a light oscillating in the predetermined direction.

### Claim 2 (depends on 1)

The polarizer of claim 1, wherein the polarizing molecules include iodine.

### Claim 3 (depends on 1)

The polarizer of claim 1, wherein the liquid crystal molecules further comprise a compound having the following chemical Formula (1):
wherein M denotes a cation,
wherein R is selected from the group consisting of hydrogen (H), bromine (Br) and a hydronitride aryl group,
wherein n is 2 or 3, and
wherein m is an integer between and including 1 and 4.

### Claim 4 (depends on 1)

The polarizer of claim 1, wherein the liquid crystal molecules comprise a compound having the following chemical Formula (2):
wherein M denotes a cation,
wherein R denotes hydrogen (H),
wherein n is an integer between and including 2 and 4, and
wherein m is an integer between and including 1 and 4.

### Claim 5 (depends on 1)

The polarizer of claim 1, wherein the liquid crystal molecules comprise a compound having the chemical Formula (3):
wherein M denotes a cation,
wherein R denotes hydrogen (H),
wherein n is an integer between and including 2 and 4, and
wherein m is an integer between and including 1 and 4.

### Claim 6 (depends on 1)

The polarizer of claim 1, wherein the supporting member comprises a flexible film or a glass substrate.