Display device and method of manufacturing the same

Patent metadata

Field	Value
Publication number	US-2015241736-A1
Application number	US-201514710804-A
Country	US
Kind code	A1
Filing date	May 13, 2015
Priority date	Dec 6, 2012
Publication date	Aug 27, 2015
Grant date	—

Abstract

A display device and a method of manufacturing the same. The display device includes: a substrate; and a reflection member that is disposed on a surface of the substrate and has a first thickness in a first reflection region corresponding to a light-emitting region and a second thickness in a second reflection region corresponding to a non-light-emitting region.

First claim

What is claimed is:

1 . A display device including a light-emitting region and a non-light-emitting region, the display device comprising:
a reflection member, the reflection member formed in a first reflection region corresponding to at least a portion of the light-emitting region and a second reflection region corresponding to at least a portion of the non-light-emitting region, wherein a first thickness of the reflection member in the first reflection region is different from a second thickness of the reflection member in the second reflection region.

2 . The display device claim 1 , wherein the first thickness is less than the second thickness.

3 . The display device claim 1 , wherein an entire area of the first reflection region is overlapped with the light-emitting region.

4 . The display device claim 1 , wherein a reflectance of the reflection member in the first reflection region is lower than a reflectance of the reflection member in the second reflection region.

5 . The display device claim 4 , wherein a transmittance of the reflection member in the first reflection region ranges from about 50% to about 95%.

6 . The display device claim 1 , wherein the reflection member comprises at least one selected from the group consisting of aluminum (Al), chromium (Cr), silver (Ag), iron (Fe), platinum (Pt), mercury (Hg), nickel (Ni), tungsten (W), vanadium (V), and molybdenum (Mo).

7 . The display device claim 1 , wherein the reflection member comprises a first reflection film and a second reflection film adjacent to the first reflection film, the first reflection film is formed in the second reflection region, and the second reflection film is formed in the first and the second reflection region.

8 . The display device claim 7 , wherein a thickness of the second reflection film is different from a thickness of the first reflection film.

9 . The display device claim 8 , wherein the thickness of the second reflection film is less than the thickness of the first reflection film.

10 . The display device claim 9 , wherein the thickness of the second reflection film ranges from about 60 Ř180 Å.

11 . The display device claim 7 , wherein the first reflection film has an opening.

12 . The display device claim 11 , wherein the opening is corresponded to the at least a portion of the light-emitting region.

13 . The display device claim 7 , wherein a reflectance of the first reflection film is higher than a reflectance of the second reflection film.

14 . The display device claim 7 , wherein each of the first and second reflection films comprises at least one selected from the group consisting of aluminum (Al), chromium (Cr), silver (Ag), iron (Fe), platinum (Pt), mercury (Hg), nickel (Ni), tungsten (W), vanadium (V), and molybdenum (Mo).

15 . The display device claim 14 , wherein at least one of the first and second reflection films is multi-layer structure and at least one layer of the multi-layer structure comprises ITO.

16 . The display device claim 7 , wherein the first and second reflection films are formed of a same material.

17 . The display device claim 7 , wherein the first and second reflection films are formed of different materials.

18 . The display device claim 7 , further comprising:
a first substrate; a pixel comprising a first electrode, a second electrode and a light-emitting layer disposed between the first and the second electrodes in the light-emitting region; and an encapsulation member that seals the first substrate.

19 . The display device claim 18 , wherein the encapsulation member is a substrate, and the reflection member is disposed on a surface of the encapsulation member.

20 . The display device claim 19 , wherein a thickness of the second reflection film is less than a thickness of the first reflection film.

21 . The display device claim 18 , wherein the first reflection film is disposed on the encapsulation member, and the second reflection film is disposed on the first reflection film.

22 . The display device claim 7 , further comprising:
a second substrate, the reflection member disposed on the second substrate; a third substrate; a pixel electrode disposed on the third substrate, the pixel electrode formed in the light-emitting region; a fourth substrate on which a common electrode facing the pixel electrode is formed; and a liquid crystal layer that is disposed between the pixel electrode and the common electrode, wherein the second substrate is disposed on the fourth substrate.

23 . The display device claim 22 , wherein the first reflection film is disposed on the second substrate and the second reflection film is disposed on the first reflection film.

24 . The display device claim 1 , further comprising:
a first substrate; a pixel comprising a first electrode, a second electrode and a light-emitting layer disposed between the first and the second electrodes in the light-emitting region; and an encapsulation member that seals the first substrate.

25 . The display device claim 24 , wherein the encapsulation member is a substrate, and the reflection member is disposed on a surface of the encapsulation member.

26 . The display device claim 25 , wherein the surface faces the first substrate.

27 . The display device claim 25 , wherein the display device further comprises a sealing member, and the first substrate and the encapsulation member is adhered to each other by the sealing member.

28 . The display device claim 27 , wherein a portion of the reflection member is overlapped with the sealing member.

29 . The display device claim 25 , wherein the reflection member is extended to end portions of the encapsulation member.

30 . The display device claim 1 , further comprising:
a second substrate, the reflection member disposed the second substrate; a third substrate; a pixel electrode disposed on the third substrate, the pixel electrode formed in the light-emitting region; a fourth substrate on which a common electrode facing the pixel electrode is formed; and a liquid crystal layer that is disposed between the pixel electrode and the common electrode, wherein the second substrate is disposed on the fourth substrate.

31 . A display device including a light-emitting region and a non-light-emitting region, the display device comprising:
a reflection member, the reflection member comprises a first reflection film and a second reflection film adjacent to the first reflection film, wherein both of the first and second reflection films are overlapped with the non-light-emitting region.

32 . The display device claim 31 , wherein the second reflection film is overlapped with the light-emitting region.

33 . The display device claim 31 , wherein a thickness of the second reflection film is different from a thickness of the first reflection film.

34 . The display device claim 33 , wherein the thickness of the second reflection film is less than the thickness of the first reflection film.

35 . The display device claim 34 , wherein the thickness of the second reflection ranges from about 60 Ř180 Å.

36 . The display device claim 31 , wherein the first reflection has an opening.

Assignees

• Samsung Display Co Ltd

Inventors

• Yim Sang-Hoon
• Kim Seong-Min
• Kim Kyung-Ho
• Cho Kwan-Hyun
• Song Young-Woo

Classifications

• H10K71/00

  Manufacture or treatment specially adapted for the organic devices covered by this subclass · CPC title

• H10K59/878

  comprising reflective means · CPC title

• G02F1/133555

  Transflectors · CPC title

• H10K59/12

  Active-matrix OLED [AMOLED] displays · CPC title

• H10K59/871 Primary

  Self-supporting sealing arrangements · CPC title