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 9,661,694 B2
• Filed: 07/01/2016
• 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:
  US15/200,739
• Publication Number:
  US 20160316526A1
• Time in Patent Office: 326 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 comprising:

a substrate;

a first sub-pixel emitting a light;

a second sub-pixel emitting a light of a same color as the first sub-pixel,

a seal layer covering and sealing a plurality of organic EL elements;

a colored layer formed above the seal layer in response to the plurality of organic EL elements; and

a convex portion provided between the colored layer and the seal layer, and the convex portion is provided between the first sub-pixel and the second sub-pixel,

wherein a top portion of the convex portion is covered by a colored layer of the first and second sub-pixels.

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 first and second sub-pixels have an optical resonator.

7. The organic EL device according to claim 6, wherein the organic EL device further comprises:

a third sub-pixel emitting a light of a different color than the first sub-pixel and having an optical resonator, wherein

an optical distance in each optical resonator of the first sub-pixel and the third sub pixel is different from each other.

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

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

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

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

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

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

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

15. An organic EL device comprising:

a substrate;

a first sub-pixel emitting a light;

a second sub-pixel emitting a light of a same color as the first sub-pixel,

a seal layer covering and sealing the first and second sub-pixels;

a colored layer formed above the seal layer in response to the first and second sub-pixels; and

a convex portion provided between the colored layer and the seal layer, and located between the first sub-pixel and the second sub-pixel in plane view,

wherein a top portion of the convex portion is covered by the colored layer of the first and second sub-pixels.

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