Polarizer and display device comprising the same

Patent metadata

Field	Value
Publication number	US-9853236-B2
Application number	US-201615056985-A
Country	US
Kind code	B2
Filing date	Feb 29, 2016
Priority date	Mar 2, 2015
Publication date	Dec 26, 2017
Grant date	Dec 26, 2017

Abstract

A polarizer includes: an adhesive layer including a binder resin and a light absorbing component dispersed in the binder resin, the light absorbing component including: a first light absorbing component to absorb a first light having a peak wavelength of about 430 nm or less; and a second light absorbing component to absorb a second light having a peak wavelength ranging from about 640 nm to about 720 nm; a phase retardation layer on the adhesive layer; and a linear polarizer on the phase retardation layer.

First claim

What is claimed is:

1. A polarizer comprising:
an adhesive layer comprising a binder resin and a light absorbing component dispersed in the binder resin, the light absorbing component comprising:
a first light absorbing component configured to absorb a first light having a peak wavelength of about 430 nm or less; and
a second light absorbing component configured to absorb a second light having a peak wavelength ranging from about 640 nm to about 720 nm;

a phase retardation layer on the adhesive layer; and
a linear polarizer on the phase retardation layer,
wherein the phase retardation layer retards a phase of light having a wavelength ranging from about 520 nm to about 600 nm by a quarter of the wavelength thereof.

2. The polarizer of claim 1 , wherein the adhesive layer has a light transmittance between about 50% to about 95%.

3. The polarizer of claim 1 , wherein the phase retardation layer comprises a quarter wave plate.

4. The polarizer of claim 1 , wherein the phase retardation layer has a phase retardation value between about 130 nm to about 150 nm.

5. The polarizer of claim 1 , wherein the phase retardation layer comprises a cyclic olefin polymer (COP).

6. The polarizer of claim 1 , further comprising a support layer between the phase retardation layer and the linear polarizer.

7. The polarizer of claim 6 , wherein the support layer comprises a tri-acetyl cellulose (TAC) film.

8. The polarizer of claim 1 , wherein the linear polarizer comprises polyvinyl alcohol (PVA).

9. A display device comprising:
a display panel having a display surface; and
a polarizer on the display surface of the display panel, the polarizer comprising:
an adhesive layer on the display panel, and comprising a binder resin and a light absorbing component dispersed in the binder resin, the light absorbing component comprising:
a first light absorbing component configured to absorb a first light having a peak wavelength of about 430 nm or less; and
a second light absorbing component configured to absorb a second light having a peak wavelength ranging from about 640 nm to about 720 nm;

a phase retardation layer on the adhesive layer; and
a linear polarizer on the phase retardation layer,

wherein the phase retardation layer retards a phase of light having a wavelength ranging from about 520 nm to about 600 nm by a quarter of the wavelength thereof.

10. The display device of claim 9 , wherein the adhesive layer has a light transmittance between about 50% to about 95%.

11. The display device of claim 9 , wherein the phase retardation layer comprises a quarter wave plate.

12. The display device of claim 9 , wherein the phase retardation layer has a phase retardation value between about 130 nm to about 150 nm.

13. The display device of claim 9 , wherein the phase retardation layer comprises a COP.

14. The display device of claim 9 , further comprising a support layer between the phase retardation layer and the linear polarizer.

15. The display device of claim 14 , wherein the support layer comprises a tri-acetyl cellulose (TAC) film.

16. The display device of claim 9 , wherein the linear polarizer comprises polyvinyl alcohol (PVA).

17. The display device of claim 9 , wherein the display panel comprises:
a first substrate;
a first electrode on the first substrate;
an organic light emitting layer on the first electrode; and
a second electrode on the organic light emitting layer.

18. A display device comprising:
a display panel having a display surface, the display panel comprising:
a first substrate;
a first electrode on the first substrate;
an organic light emitting layer on the first electrode; and
a second electrode on the organic light emitting layer;

a polarizer on the display surface of the display panel, the polarizer comprising:
an adhesive layer on the display panel, and comprising a binder resin and a light absorbing component dispersed in the binder resin, the light absorbing component comprising:
a first light absorbing component configured to absorb a first light having a peak wavelength of about 430 nm or less; and
a second light absorbing component configured to absorb a second light having a peak wavelength ranging from about 640 nm to about 720 nm;

a phase retardation layer on the adhesive layer; and
a linear polarizer on the phase retardation layer; and

a thin film encapsulation layer on the second electrode, and comprising one or more organic layers and one or more inorganic layers that are alternately stacked.

Assignees

• Samsung Display Co Ltd

Inventors

• Lee Dukjin
• Son Junghee
• Jung Woosuk

Classifications

• H01L51/5237 Primary

  Electricity · mapped topic

• G02B5/3033

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

• G02B5/3083 Primary

  Birefringent or phase retarding elements (G02B5/3008, G02B5/3016 take precedence; systems for polarisation control G02B27/286; manufacturing phase modulating patterns by lithographic processes G03F7/001) · CPC title

• H01L51/5293

  Electricity · mapped topic

• G02B5/22

  Absorbing filters {(G02B5/201 - G02B5/208 take precedence)} · CPC title