Organic EL display device and liquid crystal display device

Patent metadata

Field	Value
Publication number	US-10396304-B2
Application number	US-201715596056-A
Country	US
Kind code	B2
Filing date	May 16, 2017
Priority date	May 23, 2016
Publication date	Aug 27, 2019
Grant date	Aug 27, 2019

Abstract

An organic EL display device includes: a glass substrate; an organic EL layer formed on an upper side of the glass substrate; and a support substrate glued on a lower side of the glass substrate via a first adhesive. Recessed portions or projecting portions are formed on the glass substrate at a side thereof facing the support substrate. The recessed portions or a space between each of the projecting portions is filled with the first adhesive.

First claim

What is claimed is:

1. An organic EL display device comprising:
a glass substrate;
an organic EL layer formed on an upper side of the glass substrate;
a support substrate glued on a lower side of the glass substrate via a first adhesive;
a glass-made counter substrate covering the organic EL layer; and
a polarizing plate glued on an upper side of the counter substrate via a second adhesive,
wherein first recessed portions or first projecting portions are formed on the glass substrate at a side thereof facing the support substrate,
wherein the first recessed portions or a space between each of the first projecting portions is filled with the first adhesive, and
wherein second recessed portions or second projecting portions are formed on the counter substrate at a side thereof facing the polarizing plate.

2. The organic EL display device of claim 1 , wherein the first recessed portions are formed at intervals, and wherein if a thickness of the glass substrate is assumed to be t and a depth of the first recessed portions is assumed to be h 1 , h 1 /t is determined such that 0.001≤h 1 /t≤0.1.

3. The organic EL display device of claim 1 , wherein the first projecting portions are formed at intervals, and wherein if a thickness of the glass substrate is assumed to be t and a height of the first projecting portions is assumed to be h 2 , h 2 /t is determined such that 0.001≤h 2 /t≤0.1.

4. The organic EL display device of claim 1 , wherein the second recessed portions are formed at intervals, and wherein if a thickness of the counter substrate is assumed to be t and a depth of the second recessed portions is assumed to be h 1 , h 1 /t is determined such that 0.001≤h 1 /t≤0.1.

5. The organic EL display device of claim 1 , wherein the second projecting portions are formed at intervals, and wherein if the thickness of the counter substrate is assumed to be t and a height of the second projecting portions is assumed to be h 2 , h 2 /t is determined such that 0.001≤h 2 /t≤0.1.

6. The organic EL display device of claim 1 , wherein the organic EL display device is bent, and wherein a density of the first recessed portions, the first projection portions, the second recessed portions, or the second projecting portions at the center of the bending is larger than in other regions.

7. An organic EL display device comprising:
a glass substrate;
a resin substrate formed on an upper side of the glass substrate;
an organic EL layer formed on an upper side of the resin substrate;
a support substrate glued on a lower side of the glass substrate via a first adhesive;
a glass-made counter substrate covering the organic EL layer; and
a polarizing plate glued on the counter substrate via a second adhesive,
wherein first recessed portions or first projecting portions are formed on the glass substrate at a side thereof facing the support substrate, and
wherein the first recessed portions are filled with the first adhesive, and
wherein second recessed portions or second projecting portions are formed on the counter substrate at a side thereof facing the polarizing plate.

8. The organic EL display device of claim 7 , wherein the first recessed portions are formed at intervals, and wherein if a thickness of the glass substrate is assumed to be t and a depth of the first recessed portions is assumed to be h 1 , h 1 /t is determined such that 0.001≤h 1 /t≤0.1.

9. The organic EL display device of claim 7 , wherein the first projecting portions are formed at intervals, and wherein if a thickness of the glass substrate is assumed to be t and a height of the first projecting portions is assumed to be h 2 , h 2 /t is determined such that 0.001≤h 2 /t≤0.1.

10. The organic EL display device of claim 7 , wherein the second recessed portions are formed at intervals, and wherein if a thickness of the counter substrate is assumed to be t and a depth of the second recessed portions is assumed to be h 1 , h 1 /t is determined such that 0.001≤h 1 /t≤0.1.

11. The organic EL display device of claim 7 , wherein the second projecting portions are formed at intervals, and wherein if a thickness of the counter substrate is assumed to be t and a height of the second projecting portions is assumed to be h 2 , h 2 /t is determined such that 0.001≤h 2 /t≤0.1.

12. The organic EL display device of claim 7 , wherein the resin substrate is a polyimide substrate.

13. The organic EL display device of claim 7 , wherein the organic EL display device is bent, and wherein a density of the first recessed portions, the first projection portions, the second recessed portions, or the second projecting portions at the center of the bending is larger than in other regions.

Assignees

• Japan Display Inc

Inventors

• Watabe Kazufumi
• Ishii Yoshinori

Classifications

• G02F2201/54

  Arrangements for reducing warping-twist · CPC title

• G02F1/133305

  Flexible substrates, e.g. plastics, organic film · CPC title

• Y02E10/549

  Organic PV cells · CPC title

• H05B33/20

  characterised by the chemical or physical composition or the arrangement of the material in which the electroluminescent material is embedded · CPC title

• H05B33/145

  Arrangements of the electroluminescent material · CPC title