Organic light emitting display device comprising a reflective member having first opening formed in display area and second opening formed in peripheral area

Patent metadata

Field	Value
Publication number	US-11844235-B2
Application number	US-201715430154-A
Country	US
Kind code	B2
Filing date	Feb 10, 2017
Priority date	Feb 23, 2016
Publication date	Dec 12, 2023
Grant date	Dec 12, 2023

Abstract

An organic light emitting display device includes a substrate comprising a display area and a peripheral area and a first reflective member positioned in both the display area and the peripheral area. The first reflective member includes a first opening formed in a light-emitting region of the display area and a second opening formed in the peripheral area. The second reflective portion has openings having the same shape as openings formed in the first reflective portion. Thus, a reflectivity of the first reflective portion may be substantially the same as a reflectivity of the second reflective portion, and the first reflective portion and the second reflective portion may be perceived as an integral reflective member. Therefore, a bezel-less mirror organic light emitting display device may be manufactured.

First claim

What is claimed is:

1. An organic light emitting display device comprising:
a substrate comprising a display area and a peripheral area neighboring each other in a first direction;
a first electrode overlapping the display area;
a second electrode wider than the first electrode in the first direction and overlapping the first electrode;
a light emitting layer disposed between the first electrode and the second electrode;
a first reflective member overlapping both the display area and the peripheral area, comprising a first opening positioned over the display area, comprising a second opening positioned over the peripheral area, and including a metal, an alloy, metal nitride, or conductive metal oxide that has predetermined reflectivity;
a second reflective member at least partially positioned inside the second opening, wherein a reflectivity of the second reflective member is unequal to a reflectivity of the first reflective member; and
an encapsulation layer disposed between the second electrode and the second reflective member and directly contacting each of a face of the first reflective member and a face of the second reflective member,
wherein the face of the first reflective member is coplanar with the face of the second reflective member and is wider than the face of the second reflective member in the first direction, wherein the first reflective member comprises:
a first reflective portion having the first opening and overlapping the display area; and
a second reflective portion having the second opening and overlapping the peripheral area,
wherein the second reflective portion is integrally formed with the first reflective portion,
wherein a reflectivity of the second reflective portion is substantially equal to a reflectivity of the first reflective portion, and wherein the second opening has substantially the same shape and the same size as the first opening.

2. The organic light emitting display device of claim 1 , wherein a recess structure of the second reflective member is positioned inside the second opening, and wherein the face of the second reflective member is a face of the recess structure of the second reflective member.

3. The organic light emitting display device of claim 2 , further comprising:
a switching element electrically connected to the first electrode and comprising a gate electrode, a source electrode, and a drain electrode;
a pixel defining layer proximate to the first electrode and having an opening that accommodates the light-emitting layer; and
a metal line disposed in the peripheral area.

4. The organic light emitting display device of claim 1 , further comprising: a metal line overlapping the peripheral area,
wherein a portion of the second reflective member overlaps the metal line and is positioned inside the second opening, and wherein the first reflective member contains a metal.

5. The organic light emitting display device of claim 4 , wherein the second reflective portion overlaps the metal line.

6. The organic light emitting display device of claim 4 , further comprising:
a switching element electrically connected to the first electrode and comprising a gate electrode, a source electrode, and a drain electrode;
a pixel defining layer proximate to the first electrode and having an opening that accommodates a light-emitting layer,
wherein a material of the metal line is identical to a material of the gate electrode.

7. The organic light emitting display device of claim 1 ,
wherein the first reflective member is positioned between the encapsulation layer and the second reflective member,
wherein the second opening is a through hole, and
wherein the second reflective member partially fills the through hole without completely filling the through hole.

8. An organic light emitting display device comprising:
a substrate comprising a display area and a peripheral area neighboring each other in a first direction;
a first electrode overlapping the display area;
a second electrode wider than the first electrode in the first direction and overlapping the first electrode;
a light emitting layer disposed between the first electrode and the second electrode;
a first reflective member overlapping both the display area and the peripheral area, comprising a first opening positioned over the display area, comprising a second opening positioned over the peripheral area, and including a metal, an alloy, metal nitride, or conductive metal oxide that has predetermined reflectivity;
a second reflective member at least partially positioned inside the second opening, wherein a reflectivity of the second reflective member is unequal to a reflectivity of the first reflective member; and
an insulation layer,
wherein the first reflective member is positioned between the insulation layer and the substrate,
wherein the second reflective member is positioned between the insulation layer and the first reflective member and includes a recess structure positioned inside the second opening, and
wherein the insulation layer includes a first portion overlapping the first opening and a second portion overlapping a portion of the first reflective member positioned over the display area, and wherein the first portion of the insulation layer is narrower than the second portion of the insulation layer, wherein the first reflective member comprises:
a first reflective portion having the first opening and overlapping the display area; and
a second reflective portion having the second opening and overlapping the peripheral area,
wherein the second reflective portion is integrally formed with the first reflective portion,
wherein a reflectivity of the second reflective portion is substantially equal to a reflectivity of the first reflective portion, and wherein the second opening has substantially the same shape and the same size as the first opening.

9. The organic light emitting display device of claim 8 , wherein a second portion of the insulation layer is positioned inside the first opening, and wherein a thickness of the second portion of the insulation layer is equal to a thickness of the first portion of the insulation layer.

10. The organic light emitting display device of claim 8 , further comprising a metal line, wherein the first potion of the insulation layer overlaps the metal line and overlaps no light emitting layer of the organic light emitting display device in a direction perpendicular to the substrate, and wherein a section of the second reflective member is positioned outside the second opening and is positioned between the insulation layer and the first reflective member in the direction perpendicular to the substrate.

Assignees

• Samsung Display Co Ltd

Inventors

• Kim Joonyoup
• Song Youngwoo
• Chung Jinkoo
• Choi Junho

Classifications

• H10K59/8792

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

• H10K59/878

  comprising reflective means · CPC title

• H10K59/8731

  multilayered coatings having a repetitive structure, e.g. having multiple organic-inorganic bilayers · CPC title

• H10K59/8721

  Metallic sealing arrangements · CPC title

• H10K50/856 Primary

  comprising reflective means · CPC title