Polarization member and display device including the same

Patent metadata

Field	Value
Publication number	US-11114645-B2
Application number	US-201715581267-A
Country	US
Kind code	B2
Filing date	Apr 28, 2017
Priority date	Apr 29, 2016
Publication date	Sep 7, 2021
Grant date	Sep 7, 2021

Abstract

Provided is a display device including a display panel and a polarization member on the display panel, wherein the polarization member includes a polarizer, and a plurality of functional layers on at least one surface of the polarizer, wherein at least one of the plurality of functional layers includes a first light absorbing dye that absorbs light having a wavelength of greater than about 380 nm and equal to or less than about 450 nm.

First claim

What is claimed is:

1. A display device, comprising:
a display panel; and
a polarization member on the display panel, the polarization member including:
a polarizer; and
a plurality of functional layers on at least one surface of the polarizer, at least one of the plurality of functional layers including a light absorbing dye that absorbs light having a wavelength of greater than about 380 nm and equal to or less than about 450 nm, wherein
the light absorbing dye includes at least two benzotriazole derivatives, the at least two benzotriazole derivatives are different from each other, and the at least two benzotriazole derivatives cause the light-absorbing dye to have a light transmittance in a wavelength range of greater than about 380 nm and equal to or less than about 400 nm of about 5% or less, and
one of at least two benzotriazole derivatives has a maximum absorption wavelength in the range of 350 nm to 360 nm, and the other of at least two benzotriazole derivatives has a maximum absorption wavelength in the range of 340 nm to 350 nm and 300 nm to 310 nm.

2. The display device as claimed in claim 1 , wherein the plurality of functional layers includes at least one of a λ/4 retardation layer, a λ/2 retardation layer, a protective film, an antireflection layer, a hard coating layer, a brightness enhancement film, an adhesive layer, or a surface treatment layer.

3. The display device of claim 2 , wherein the adhesive layer includes the light absorbing dye.

4. The display device of claim 2 , wherein:
the plurality of functional layers includes the λ/4 retardation layer, the λ/2 retardation layer, and the adhesive layer,
the λ/2 retardation layer and the adhesive layer are disposed between the polarizer and the λ/4 retardation layer, and
the adhesive layer includes the light absorbing dye.

5. The display device of claim 4 , wherein the adhesive layer is disposed between the λ/4 retardation layer and the λ/2 retardation layer.

6. The display device of claim 4 , wherein the adhesive layer is disposed between the polarizer and the λ/2 retardation layer.

7. The display device as claimed in claim 1 , wherein the at least two benzotriazole derivatives cause the light-absorbing dye to have a light transmittance in a wavelength range of about 400 nm to about 410 nm of about 65% or less.

8. The display device as claimed in claim 1 , wherein the at least two benzotriazole derivatives cause the light-absorbing dye to have a light transmittance in a wavelength range of about 410 nm to about 780 nm of about 65% to about 100%.

9. The display device as claimed in claim 1 , further comprising a second adhesive layer disposed between the display panel and the polarization member, the second adhesive layer including a second light absorbing dye that absorbs light having a wavelength of greater than about 380 nm and equal to or less than about 450 nm.

10. The display device as claimed in claim 9 , wherein the second light absorbing dye is the same as the light absorbing dye.

11. The display device as claimed in claim 9 , wherein the second adhesive layer has a light transmittance in a wavelength range of greater than about 380 nm and equal to or less than about 400 nm of about 5% or less, and has a light transmittance in a wavelength range of about 400 nm to about 410 nm of about 65% or less.

12. The display device as claimed in claim 9 , wherein the second adhesive layer has a light transmittance in a wavelength range of about 410 nm to about 780 nm of about 65% to about 100%.

13. The display device of claim 9 , further comprising a touch sensing unit disposed between the display panel and the polarization member,
wherein the second adhesive layer is disposed between the display panel and the touch sensing unit.

14. The display device as claimed in claim 1 , further comprising:
a window member on the polarization member; and
a third adhesive layer disposed between the polarization member and the window member, the third adhesive layer including a third light absorbing dye that absorbs light having a wavelength of greater than about 380 nm and equal to or less than about 450 nm.

15. The display device as claimed in claim 14 , wherein the third light absorbing dye is the same as the light absorbing dye.

16. The display device as claimed in claim 14 , wherein the third adhesive layer has a light transmittance in a wavelength range of greater than about 380 nm and equal to or less than about 400 nm of about 5% or less, and has a light transmittance in a wavelength range of about 400 nm to about 410 nm of about 65% or less.

17. The display device as claimed in claim 14 , wherein the third adhesive layer has a light transmittance in a wavelength range of about 410 nm to about 780 nm of about 65% to about 100%.

18. The display device of claim 14 , further comprising a touch sensing unit disposed between the polarization member and the window member, wherein:
the third adhesive layer includes a first sub-adhesive layer disposed between the polarization member and the touch sensing unit and a second sub-adhesive layer disposed between the touch sensing unit and the window member, and
at least one of the first sub-adhesive layer or the second sub-adhesive layer includes the third light absorbing dye.

19. The display device of claim 14 , further comprising a touch sensing unit disposed between the display panel and the polarization member,
wherein the touch sensing unit is directly disposed on the display panel.

20. The display device as claimed in claim 1 , wherein the display panel includes:
a first electrode;
an organic layer that is on the first electrode and includes an emission layer;
a second electrode on the organic layer;
a capping layer on the second electrode; and
an encapsulation layer on the capping layer,
wherein the capping layer includes another light absorbing dye, which absorbs light having a wavelength of greater than about 380 nm and equal to or less than about 450 nm, or an organic material.

21. The display device as claimed in claim 20 , wherein the encapsulation layer includes glass.

22. The display device as claimed in claim 20 , wherein the capping layer has a light transmittance in a wavelength range of about 400 nm to about 410 nm of about 65% or less.

23. The display device as claimed in claim 20 , wherein the capping layer has a light transmittance in a wavelength range of about 410 nm to about 780 nm of about 65% to about 100%.

24. A display device, comprising:
a display panel; and
a polarization member on the display panel, the polarization member including a light absorbing dye that absorbs light having a wavelength of greater than about 380 nm and equal to or less than about 450 nm, wherein
the light absorbing dye includes at least two benzotriazole derivatives, the at least two benzotriazole derivatives are different from each other, and the at least two benzotriazole derivatives cause the polarization member to have a light transmittance in a wavelength range of greater than about 380 nm and equal to or less than about 400 nm of about 5% or less, and
one of at least two benzotriazole derivatives has a maximum absorption wavelength in the range of 350 nm to 360 nm, and the other of at least two benzotriazole derivatives has a maximum absorption wavelength in the range of 340 nm to 350 nm and 300 nm to 310 nm.

25. The display device as claimed in claim 24 , wherein the at least two

Assignees

• Samsung Display Co Ltd

Inventors

• Yang Jungjin
• Kim Myunghwan
• Kim Sunhwa
• Park Jieun
• Song Wonjun
• Lee Kwanhee
• Lee Dukjin
• Jung Woosuk
• Jeong Heeseong

Classifications

• G09F9/00 Primary

  Indicating arrangements for variable information in which the information is built-up on a support by selection or combination of individual elements (in which the variable information is permanently attached to a movable support G09F11/00; abacus G06C1/00; slide-rules G06G1/00) · CPC title

• G06F3/0412

  Digitisers structurally integrated in a display · CPC title

• G02B5/30

  Polarising elements (light-modulating devices with active elements G02F1/00) · CPC title

• G02B1/14

  Protective coatings, e.g. hard coatings · CPC title

• H10K59/8792

  comprising light absorbing layers, e.g. black layers · CPC title