SCATTERING MEMBER AND ORGANIC ELECTROLUMINESCENT DISPLAY DEVICE USING THE SAME

• US 20090052195A1
• Filed: 08/21/2008
• Published: 02/26/2009
• Est. Priority Date: 08/21/2007
• Status: Abandoned Application

• Current Assignee: Fujifilm Corporation (Fujifilm Holdings Corporation)
• Original Assignee: Fujifilm Corporation (Fujifilm Holdings Corporation)
• Inventors: Saitoh, Yukito, SANETO, Ryuji, Nomura, Tatsuho
• Application Number:
  US12/195,708
• Publication Number:
  US 20090052195A1
• Time in Patent Office: Days
• US Class Current: 362/355
• CPC Class Codes: G02B 5/0242 by means of dispersed particles
• CPC Class Codes: G02B 5/0278 used in transmission

Abstract

A scattering member includes: a binder; and a light scattering particle, wherein the scattering member is used for an organic electroluminescent display device; and an organic electroluminescent display device uses the scattering member.

Claims

1. A scattering member, comprising:

a binder; and

a light scattering particle,

wherein the scattering member is used for an organic electroluminescent display device.

2. The scattering member according to claim 1,

wherein the binder contains a liquid.

3. The scattering member according to claim 1,

wherein the binder contains a self-adhesive agent.

4. The scattering member according to claim 1,

wherein the binder contains an adhesive.

5. The scattering member according to claim 1,

wherein the binder contains a light-transmitting resin.

6. The scattering member according to claim 1,

wherein a refractive index of the binder is 1.65 or more.

7. The scattering member according to claim 1,

wherein the binder contains at least one kind of an inorganic fine particle selected from the group consisting of ZrO₂, TiO₂, ZnO and SnO₂.

8. The scattering member according to claim 1,

wherein a refractive index of the light scattering particle is 1.55 or less or 2.1 or more.

9. The scattering member according to claim 1,

wherein an average diameter of the light scattering particle is 2.0 μ

m or less.

10. The scattering member according to claim 1,

wherein an average diameter of the light scattering particle is from 0.2 to 0.5 μ

m.

11. The scattering member according to claim 1, which has a film thickness of from 0.5 to 10.0 μ

m.

12. The scattering member according to claim 1, which has a film thickness of from 1.0 to 7.5 μ

m.

13. The scattering member according to claim 1,

wherein a refractive index of the binder is 1.5 or less.

14. The scattering member according to claim 13,

wherein the binder contains at least one kind of a fine particle selected from the group consisting of a silica fine particle and a hollow silica fine particle.

15. The scattering member according to claim 13,

wherein a refractive index of the light scattering particle is 1.65 or more.

16. The scattering member according to claim 13,

wherein an average diameter of the light scattering particle is 2.0 μ

m or less.

17. The scattering member according to claim 13,

wherein an average diameter of the light scattering particle is from 0.2 to 0.5 μ

m.

18. The scattering member according to claim 13, which has a film thickness of from 0.5 to 10.0 μ

m.

19. The scattering member according to claim 13, which has a film thickness of from 1.0 to 7.5 μ

m.

20. An organic electroluminescent display device, comprising:

a substrate;

a lower electrode;

an organic electroluminescent layer;

an upper electrode; and

a transparent substrate, in this order,

wherein the scattering member according to claim 1 is in contact with the upper electrode.

21. An organic electroluminescent display device, comprising:

a substrate;

a lower electrode;

an organic electroluminescent layer;

an upper electrode;

a barrier layer; and

a transparent substrate, in this order,

wherein the scattering member according to claim 1 is in contact with the barrier layer.