ORGANIC LIGHT EMITTING DISPLAY DEVICE AND METHOD OF MANUFACTURING THE SAME

• US 20160190505A1
• Filed: 07/16/2015
• Published: 06/30/2016
• Est. Priority Date: 12/29/2014
• Status: Active Grant

• Current Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Original Assignee: Samsung Display Company Limited (Samsung Electronics Co. Ltd.)
• Inventors: KOO, Youngmo, KIM, Woongsik
• Granted Patent: US 9,590,202 B2
• Time in Patent Office: Days
• US Class Current: 1/1
• CPC Class Codes: H10K 50/824 combined with auxiliary electrodes
• CPC Class Codes: H10K 50/8428 Vertical spacers, e.g. arranged between the sealing arrangement and the OLED
• CPC Class Codes: H10K 59/80522 combined with auxiliary electrodes
• CPC Class Codes: H10K 59/8723 Vertical spacers, e.g. arranged between the sealing arrangement and the OLED

Abstract

An organic light emitting display device includes a first substrate, a first electrode layer including a plurality of first electrodes and an auxiliary electrode on the first substrate, the auxiliary electrode being spaced apart from the first electrodes in a plan view, an organic layer on the first electrode layer, the organic layer overlapping the first electrodes of the first electrode layer, a second electrode layer on the first electrode layer, the second electrode layer overlapping the first electrodes and the auxiliary electrode of the first electrode layer, a second substrate on the second electrode layer, and a connection member penetrating through the second electrode layer and through the organic layer to electrically connect the second electrode layer and the auxiliary electrode, the connection member contacting the second substrate.

Claims

1. An organic light emitting display device, comprising:

a first substrate;

a first electrode layer including a plurality of first electrodes and an auxiliary electrode on the first substrate, the auxiliary electrode being spaced apart from the first electrodes in a plan view;

an organic layer on the first electrode layer, the organic layer overlapping the first electrodes of the first electrode layer;

a second electrode layer on the first electrode layer, the second electrode layer overlapping the first electrodes and the auxiliary electrode of the first electrode layer;

a second substrate on the second electrode layer; and

a connection member penetrating through the second electrode layer and through the organic layer to electrically connect the second electrode layer and the auxiliary electrode, the connection member contacting the second substrate.

2. The organic light emitting display device as claimed in claim 1, wherein the connection member contacts the auxiliary electrode.

3. The organic light emitting display device as claimed in claim 2, wherein the connection member has a substantially spherical shape.

4. The organic light emitting display device as claimed in claim 1, further comprising a pixel definition layer between the first substrate and the second substrate, the pixel definition layer having a plurality of opening portions spaced apart from each other in a plan view, and the opening portions include:

a plurality of first openings respectively exposing at least portions of the first electrodes; and

a second opening portion spaced apart from the first openings in a plan view, the second opening portion exposing at least a portion of the auxiliary electrode, and the connection member being in the second opening portion.

5. The organic light emitting display device as claimed in claim 4, wherein each of the connection member and the second opening portion is provided in a plural number, and one or more connection members are disposed in each of the second opening portion.

6. The organic light emitting display device as claimed in claim 4, wherein the first opening portions are arranged in a matrix form, and the second opening portion is disposed between the first portions to have a lattice shape in a plan view.

7. The organic light emitting display device as claimed in claim 1, wherein the organic layer includes:

a hole transport region overlapping with the first electrodes and the auxiliary electrode;

a plurality of light emitting patterns respectively overlapping with the first electrodes; and

an electron transport region overlapping with the first electrodes and the auxiliary electrode, and the connection member penetrates through at least one of the hole transport region and the electron transport region and the connection member is spaced apart from the light emitting patterns in a plan view.

8. The organic light emitting display device as claimed in claim 1, wherein the first electrodes receive a first source voltage, and the auxiliary electrode receives a second source voltage different from the first source voltage.

9. The organic light emitting display device as claimed in claim 8, wherein the auxiliary electrode includes a substantially same material as the first electrodes.

10. The organic light emitting display device as claimed in claim 1, further comprising:

a sealing member disposed between the first substrate and the second substrate along an edge of the second substrate to couple the first substrate and the second substrate; and

a filler interposed between the first substrate and the second substrate.

11. A method of manufacturing an organic light emitting display device, the method comprising:

providing a first substrate including a plurality of light emitting areas and a non-light emitting area disposed adjacent to the light emitting areas;

forming a plurality of first electrodes respectively disposed in the light emitting areas of the first substrate and at least one auxiliary electrode disposed in the non-light emitting area of the first substrate;

forming a pixel definition layer on the first substrate to expose at least a portion of each of the first electrodes and the auxiliary electrode;

forming an organic layer on the first substrate;

forming a second electrode on the organic layer;

disposing a connection member on the second electrode to overlap with the non-light emitting area;

disposing a second substrate above the second electrode;

pressurizing the second substrate to allow the connection member to electrically contact the auxiliary electrode; and

coupling the first substrate and the second substrate.

12. The method as claimed in claim 11, wherein forming the pixel definition layer includes:

forming an insulating layer on the first substrate to cover the first electrodes and the auxiliary electrode; and

forming first opening portions through the insulating layer to expose the first electrodes and a second opening portion through the insulating layer to expose the auxiliary electrode, the connection member being in the second opening portion.

13. The method as claimed in claim 12, wherein the connection member is a conductive ball.

14. The method as claimed in claim 13, wherein the connection member is pressurized by the second substrate, and a height in a cross-sectional view of the connection member, after the connection member is pressurized by the second substrate, is equal to or smaller than a height in the cross-sectional view of the connection member before the connection member is pressurized by the second substrate.

15. The method as claimed in claim 11, wherein forming the organic layer includes:

forming a hole transport region on the first electrode layer;

forming a plurality of light emitting patterns on the hole transport region to respectively overlap with the light emitting areas; and

forming an electron transport region on the light emitting patterns and the hole transport region, the connection member is disposed to be spaced apart from the light emitting patterns in a plan view, and the connection member penetrates through at least one of the hole transport region and the electron transport region by the pressurization of the second substrate to contact the auxiliary electrode.