Display device

• US 9,917,280 B2
• Filed: 04/22/2016
• Issued: 03/13/2018
• Est. Priority Date: 04/24/2015
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: Seo, Ilhun, Kim, Byoungki, Shin, Youngjun, Lee, Jiyoun, Choi, Jaebeom
• Primary Examiner(s): Lebentritt, Michael
• Assistant Examiner(s): KLEIN, JORDAN M
• Application Number:
  US15/135,775
• Publication Number:
  US 20160315288A1
• Time in Patent Office: 690 Days
• Field of Search: None
• CPC Class Codes: H10K 50/846 comprising getter material or desiccants
• CPC Class Codes: H10K 50/856 comprising reflective means
• CPC Class Codes: H10K 59/122 Pixel-defining structures or layers, e.g. banks
• CPC Class Codes: H10K 59/874 including getter material or desiccant
• CPC Class Codes: H10K 59/878 comprising reflective means

Abstract

A display device includes a first substrate, a pixel defining layer on the first substrate, the pixel defining layer configured to define a light emission area, a first electrode in the light emission area, a light emitting layer on the first electrode, a second electrode on the light emitting layer, a second substrate which is opposite to the first substrate, and a reflecting member on a lower surface of the first substrate. The reflecting member may include a first reflecting unit on the lower surface of the first substrate, the first reflecting unit having an aperture at a position overlapping the light emission area, and a second reflecting unit on the first reflecting unit.

Claims

1. A display device comprising:

a first substrate;

a pixel defining layer on the first substrate, the pixel defining layer configured to define a light emission area;

a first electrode in the light emission area;

a light emitting layer on the first electrode;

a second electrode on the light emitting layer;

a second substrate which is opposite to the first substrate;

a reflecting member on a lower surface of the first substrate, the reflecting member comprising;

a first reflecting unit on the lower surface of the first substrate, the first reflecting unit having an aperture at a position overlapping the light emission area; and

a second reflecting unit disposed on the first reflecting unit and overlapping the first reflecting unit in a plan view;

a filling member on the second reflecting unit;

a transparent glass on the filling member; and

a sealing member between the second reflecting unit and the transparent glass, the sealing member surrounding the filling member.

2. The display device of claim 1, wherein a size of the aperture of the first reflecting unit is less than a size of the light emission area.

3. The display device of claim 2, wherein the size of the aperture of the first reflecting unit is less than a size of the first electrode.

4. The display device of claim 2, wherein the size of the aperture of the first reflecting unit is less than a size of the light emitting layer.

5. The display device of claim 2, wherein the first reflecting unit comprises at least one of aluminum (Al), chromium (Cr), silver (Ag), iron (Fe), platinum (Pt), mercury (Hg), nickel (Ni), tungsten (W), vanadium (V), and molybdenum (Mo).

6. The display device of claim 5, wherein the second reflecting unit comprises a transparent material.

7. The display device of claim 1, wherein the second reflecting unit is disposed within the aperture of the first reflecting unit.

8. The display device of claim 1, wherein the first reflecting unit has a thickness greater than a thickness of the second reflecting unit.

9. The display device of claim 1, further comprising a moisture absorbing member between the filling member and the sealing member.

10. A display device comprising:

a first substrate;

a pixel defining layer on the first substrate, the pixel defining layer configured to define a light emission area;

a first electrode in the light emission area;

a light emitting layer on the first electrode;

a second electrode on the light emitting layer;

a second substrate which is opposite to the first substrate;

a filling member on a lower surface of the first substrate;

a reflecting member on the filling member;

a transparent glass on the reflecting member; and

a sealing member between the first substrate and the transparent glass,

the reflecting member comprising;

a first reflecting unit on the transparent glass, the first reflecting unit having an aperture at a position overlapping the light emission area; and

a second reflecting unit disposed on the first reflecting unit and overlapping the first reflecting unit in a plan view, and

the sealing member surrounding the second reflecting unit and the filling member.

11. The display device of claim 10, wherein a size of the aperture of the first reflecting unit is less than a size of the light emission area.

12. The display device of claim 11, wherein the size of the aperture of the first reflecting unit is less than a size of the first electrode.

13. The display device of claim 11, wherein the size of the aperture of the first reflecting unit is less than a size of the light emitting layer.

14. The display device of claim 10, wherein the second reflecting unit is disposed within the aperture of the first reflecting unit.

15. The display device of claim 10, wherein the first reflecting unit has a thickness greater than a thickness of the second reflecting unit.