Polarizing film and display device including the polarizing film

Patent metadata

Field	Value
Publication number	US-9207359-B2
Application number	US-201314073510-A
Country	US
Kind code	B2
Filing date	Nov 6, 2013
Priority date	Nov 7, 2012
Publication date	Dec 8, 2015
Grant date	Dec 8, 2015

Abstract

Disclosed are a polarizing film including a polyolefin and a dichroic dye having a solubility parameter difference between the polyolefin and the dichroic dye is less than 7.4, and a display device including the polarizing film.

First claim

What is claimed is:

1. A polarizing film comprising
a polyolefin and
a dichroic dye represented by the Chemical Formula 1,
wherein a solubility parameter difference between the polyolefin and the dichroic dye is less than 7.4:

wherein, in Chemical Formula 1,
Ar 1 to Ar 3 are each independently a substituted or unsubstituted C6 to C15 arylene group,
R 1 is a substituted or unsubstituted C1 to C30 aliphatic group, a substituted or unsubstituted C3 to C8 cycloaliphatic group, a substituted or unsubstituted C6 to C30 aromatic group, a substituted or unsubstituted C1 to C30 hetero aliphatic group, a substituted or unsubstituted C1 to C30 hetero aromatic group, or a combination thereof,
R 2 is hydrogen, a substituted or unsubstituted C1 to C30 aliphatic group, a substituted or unsubstituted C3 to C8 cycloaliphatic group, a substituted or unsubstituted C6 to C30 aromatic group, a substituted or unsubstituted C1 to C30 hetero aliphatic group, a substituted or unsubstituted C1 to C30 hetero aromatic group, a substituted or unsubstituted amino group, —NR 3 R 4 , or a combination thereof, wherein R 3 and R 4 are each independently hydrogen, a substituted or unsubstituted C1 to C10 alkyl group, or are linked to each other to form a ring, and
n and m are independently 0 or 1.

2. The polarizing film of claim 1 , wherein R 1 is a substituted or unsubstituted C1 to C30 alkyl group, a substituted or unsubstituted C1 to C20 alkoxy group, a substituted or unsubstituted C1 to C20 thioalkyl group, a substituted or unsubstituted C3 to C30 ketone group, a substituted or unsubstituted C1 to C30 oxycarbonyl group, a substituted or unsubstituted C2 to C20 alkenyl group, a substituted or unsubstituted C2 to C30 alkynyl group, or a combination thereof, and
R 2 is hydrogen, a substituted or unsubstituted C1 to C30 alkyl group, a substituted or unsubstituted C6 to C20 aryl group, a substituted or unsubstituted C1 to C20 alkoxy group, a substituted or unsubstituted C1 to C20 thioalkyl group, —NR 3 R 4 , or a combination thereof, wherein R 3 and R 4 are each independently hydrogen, a substituted or unsubstituted C1 to C10 alkyl group or are linked to each other to form a ring.

3. The polarizing film of claim 1 , wherein when each of n and m is 1,
R 1 s a substituted or unsubstituted C1 to C30 alkyl group, a substituted or unsubstituted C1 to C20 alkoxy group, a substituted or unsubstituted C1 to C20 thioalkyl group, a substituted or unsubstituted C3 to C30 ketone group, a substituted or unsubstituted C1 to C30 oxycarbonyl group, a substituted or unsubstituted C2 to C20 alkenyl group, a substituted or unsubstituted C2 to C30 alkynyl group, or a combination thereof, and
R 2 is hydrogen, a substituted or unsubstituted C1 to C30 alkyl group, a substituted or unsubstituted C6 to C20 aryl group, —NR 3 R 4 , or a combination thereof, wherein R 3 and R 4 are each independently hydrogen, a substituted or unsubstituted C1 to C10 alkyl group, or are linked to each other to form a ring.

4. The polarizing film of claim 1 , wherein when each of n and m is 0,
R 1 is a substituted or unsubstituted C1 to C30 alkyl group, a substituted or unsubstituted C1 to C20 alkoxy group, a substituted or unsubstituted C1 to C20 thioalkyl group, a substituted or unsubstituted C3 to C30 ketone group, a substituted or unsubstituted C1 to C30 oxycarbonyl group, a substituted or unsubstituted C2 to C20 alkenyl group, a substituted or unsubstituted C2 to C30 alkynyl group, or a combination thereof, and
R 2 is hydrogen, a substituted or unsubstituted C1 to C30 alkyl group, —NR 3 R 4 , or a combination thereof, wherein R 3 and R 4 are each independently hydrogen, a substituted or unsubstituted C1 to C10 alkyl group, or are linked to each other to form a ring.

5. The polarizing film of claim 1 , wherein when n is 1 and m is 0,
R 1 is a substituted or unsubstituted C1 to C30 alkyl group, a substituted or unsubstituted C1 to C20 alkoxy group, a substituted or unsubstituted C1 to C20 thioalkyl group, a substituted or unsubstituted C3 to C30 ketone group, a substituted or unsubstituted C1 to C30 oxycarbonyl group, a substituted or unsubstituted C2 to C20 alkenyl group, a substituted or unsubstituted C2 to C30 alkynyl group, or a combination thereof, and
R 2 is hydrogen, a substituted or unsubstituted C1 to C30 alkyl group, a substituted or unsubstituted C6 to C30 aryl group, —NR 3 R 4 , or a combination thereof, wherein R 3 and R 4 are each independently hydrogen, a substituted or unsubstituted C1 to C10 alkyl group, or are linked to each other to form a ring.

6. The polarizing film of claim 5 , wherein R 2 comprises a substituted or unsubstituted C6 to C30 aryl group.

7. The polarizing film of claim 1 , wherein Ar 1 to Ar 3 are each independently a substituted or unsubstituted phenylene group, a substituted or unsubstituted naphthalene group, or a substituted or unsubstituted biphenylene group.

8. The polarizing film of claim 7 , wherein the substituted phenylene group, the substituted naphthalene group, and the substituted biphenylene group are substituted with a substituted or unsubstituted C1 to C20 alkyl group, a substituted or unsubstituted C1 to C20 alkoxy group, a halogen atom, a halogen-containing group, or a combination thereof.

9. The polarizing film of claim 1 , wherein
R 1 is a substituted or unsubstituted C1 to C20 alkoxy group or a substituted or unsubstituted C1 to C20 thioalkyl group,
R 2 is hydrogen or —NR 3 R 4 , wherein R 3 and R 4 are each independently hydrogen, substituted or unsubstituted C1 to C10 alkyl group, or are linked to each other to form a ring,
m is 1, and
n is 1.

10. The polarizing film of claim 1 , wherein
R 1 is a substituted or unsubstituted C1 to C20 alkoxy group, a substituted or unsubstituted C1 to C20 thioalkyl group, or a substituted or unsubstituted C1 to C30 alkyl group,
R 2 is hydrogen, a substituted or unsubstituted C1 to C30 alkyl group or
—NR 3 R 4 , wherein R 3 and R 4 are each independently hydrogen, substituted or unsubstituted C1 to C10 alkyl group, or are linked to each other to form a ring,
m is 0, and
n is 0.

11. The polarizing film of claim 1 , wherein
R 1 is a substituted or unsubstituted C1 to C20 alkoxy group, a substituted or a unsubstituted C1 to C20 thioalkyl group, or a substituted or unsubstituted C1 to C30 alkyl group,
R 2 is hydrogen or a substituted or unsubstituted C6 to C30 aryl group,
m is 0, and
n is 1.

12. The polarizing film of claim 1 , wherein the polyolefin has a solubility parameter of about 15 to about 18, and
the dichroic dye has a solubility parameter of less than about 24.

13. The polarizing film of claim 1 , wherein the polyolefin comprises polyethylene, polypropylene, a polyethylene-polypropylene copolymer, or a combination thereof.

14. The polarizing film of claim 13 , wherein the polyolefin is a combination comprising polypropylene and a polyethylene-polypropylene copolymer, and
the polyethylene-polypropylene copolymer has an ethylene content of about 1 to about 50 wt %.

15. The polarizing film of claim 14 , wherein the polyolefin has a melt flow index of about 1 g/10 min to about 15 g/10 min.

16. The polarizing film of claim 1 , wherein the dichroic dye is present in an amount of about 0.01 to about 5 parts by weight based on 100 parts by weight of the polyolefin.

17. The polarizing film of claim 16 , wherein the dichroic dye is present in an amount

Assignees

• Samsung Electronics Co Ltd

Inventors

• Lee Yong Joo
• Moon Deuk Kyu
• Park Sang Ho
• Won Jong Hoon
• Choi Hyeon Ho
• Kim Myung Man
• Kim Young Hwan
• Fang Feifei
• Jung Myung Sup

Classifications

• C09B31/043

  Amino-benzenes · CPC title

• G02B1/08 Primary

  made of polarising materials · CPC title

• G02B5/3033

  in the form of a thin sheet or foil, e.g. Polaroid · CPC title

• C08L23/04

  Homopolymers or copolymers of ethene · CPC title

• C09B31/28

  Heterocyclic compounds · CPC title