Organic EL device having a convex portion, method of manufacturing organic EL device having a convex portion, and electronic apparatus having an organic EL device having a convex portion

• US 9,661,693 B2
• Filed: 07/09/2015
• Issued: 05/23/2017
• Est. Priority Date: 10/29/2012
• Status: Active Grant

• Current Assignee: Seiko Epson Corporation (Seiko Group)
• Original Assignee: Seiko Epson Corporation (Seiko Group)
• Inventors: Hanamura, Yuki
• Primary Examiner(s): Green, Tracie Y
• Application Number:
  US14/795,575
• Publication Number:
  US 20150327346A1
• Time in Patent Office: 684 Days
• CPC Class Codes: G02B 5/201 in the form of arrays
• CPC Class Codes: H05B 33/04 Sealing arrangements , e.g. against humidity
• CPC Class Codes: H05B 33/10 Apparatus or processes specially adapted to the manufacture of electroluminescent light sources
• CPC Class Codes: H05B 33/14 characterised by the chemical or physical composition or the arrangement of the electroluminescent material , or by the simultaneous addition of the electroluminescent material in or onto the light source
• CPC Class Codes: H05B 33/22 characterised by the chemical or physical composition or the arrangement of auxiliary dielectric or reflective layers
• CPC Class Codes: H10K 59/123 Connection of the pixel electrodes to the thin film transistors [TFT]
• CPC Class Codes: H10K 59/38 comprising colour filters or colour changing media [CCM]

Abstract

The organic EL device includes a base material as a substrate, a plurality of organic EL elements disposed on the based materials, a seal layer covering the plurality of organic EL elements to seal, color layers of at least red, green, and blue corresponding to a plurality of organic EL elements and formed on the seal layer, and a convex portion which is formed by dividing each of colored layers with different colors on the seal layer, and whose height is lower than the height of a colored layer of at least red, green, blue on the seal layer. The convex portion has a property of optical transparency, and is formed using a photosensitive resin material which is a main material of the colored layers, for example.

Claims

1. An organic EL device, the organic EL device comprising:

a substrate;

a seal layer provided on an upper side of a first main surface of the substrate;

an electrode provided between the seal layer and the substrate;

a first pixel electrode provided between the electrode and the substrate;

a second pixel electrode provided between the electrode and the substrate;

an organic light emitting layer disposed between the first pixel electrode and the electrode and disposed between the second pixel electrode and the electrode;

a color filter comprising a first color filter that overlaps the first pixel electrode when viewed from a direction orthogonal with respect to the first main surface, and a second color filter that overlaps the second pixel electrode when viewed from a direction orthogonal with respect to the first main surface;

a convex portion provided between the color filter and the seal layer, the convex portion comprising a first side wall, a second side wall, and a top portion;

wherein a part of the seal layer is disposed between the electrode and the color filter,

wherein the first color filter contacts the first side wall and has a portion that covers the top portion, and

wherein the second color filter contacts the second side wall and contacts the portion of the first color filter.

2. The organic EL device according to claim 1,

wherein the convex portion has optical transparency.

3. The organic EL device according to claim 2,

wherein the convex portion is made of a resin.

4. The organic EL device according to claim 1,

wherein the convex portion is made of a metal material or a dielectric material.

5. The organic EL device according to claim 1,

wherein an area of a bottom surface of the convex portion in contact with the seal layer is larger than an area of the top portion of the convex portion.

6. The organic EL device according to claim 1,

wherein the convex portion is provided between the first pixel electrode and the second pixel electrode when viewed from a direction orthogonal with respect to the first main surface.

7. The organic EL device according to claim 1,

wherein the seal layer comprises:

a first seal layer that contacts the electrode and is made of inorganic material;

a second seal layer that contacts the first color filter, the second color filter, and the convex portion; and

a flattened layer provided between the first seal layer and second seal layer.

8. The organic EL device according to claim 1, further comprising:

a third pixel electrode provided between the electrode;

a third color filter that overlaps the third electrode when viewed from a direction orthogonal with respect to the first main surface,

wherein the convex portion has a third side wall, a fourth side wall, and a second top portion,

wherein the first color filter contacts the third side wall and has a second portion that covers the second top portion, and

wherein the third color filter contacts the fourth side wall and contacts the second portion of the first color filter.

9. An electronic device comprising the organic EL device according to claim 1.

10. An electronic device comprising the organic EL device according to claim 2.

11. An electronic device comprising the organic EL device according to claim 3.

12. An electronic device comprising the organic EL device according to claim 4.

13. An electronic device comprising the organic EL device according to claim 5.

14. An electronic device comprising the organic EL device according to claim 6.

15. An electronic device comprising the organic EL device according to claim 7.

16. An electronic device comprising the organic EL device according to claim 8.