SYSTEM FOR DISPLAYING IMAGES

• US 20100059780A1
• Filed: 08/27/2009
• Published: 03/11/2010
• Est. Priority Date: 09/10/2008
• Status: Active Grant

• Current Assignee: InnoLux Corporation
• Original Assignee: TPO Displays Corporation (InnoLux Corporation)
• Inventors: SU, Po-Kun, NISHIKAWA, Ryuji, YEN, Jui-Hsiang
• Granted Patent: US 8,598,788 B2
• Time in Patent Office: Days
• US Class Current: 257/98
• CPC Class Codes: H10K 2102/3026 Top emission
• CPC Class Codes: H10K 2102/351 Thickness
• CPC Class Codes: H10K 50/125 specially adapted for multicolour light emission, e.g. for emitting white light
• CPC Class Codes: H10K 50/841 Self-supporting sealing arrangements
• CPC Class Codes: H10K 50/844 Encapsulations
• CPC Class Codes: H10K 59/38 comprising colour filters or colour changing media [CCM]
• CPC Class Codes: H10K 59/871 Self-supporting sealing arrangements
• CPC Class Codes: H10K 59/873 Encapsulations

Abstract

A system for displaying images employing an organic electroluminescent device is provided. The organic electroluminescent device includes a first electrode, an organic electroluminescent element disposed on the first electrode, a second electrode disposed on the organic electroluminescent element, and a color tuning element disposed on the second electrode. In particular, the color tuning element has a thickness range T1: 3500 Å≦T1≦4500 Å, 6500 Å≦T1≦7500 Å, 9500 Å≦T1≦10500 Å, 11000 Å≦T1≦12000 Å, 13500 Å≦T1≦14500 Å, 16500 Å≦T1≦17500 Å, or 18500 Å≦T1≦19500 Å.

Claims

1. A system for displaying images, comprising:

an organic electroluminescent device, comprising;

a first electrode;

an organic electroluminescent element disposed on the first electrode;

a second electrode disposed on the organic electroluminescent element; and

a first color tuning element disposed on the second electrode, wherein the color tuning element has a thickness T1;

3500 Å

≦

T1≦

4500 Å

, 6500 Å

≦

T1≦

7500 Å

, 9500 Å

≦

T1≦

10500 Å

, 11000 Å

≦

T1≦

12000 Å

, 13500 Å

≦

T1≦

14500 Å

, 16500 Å

≦

T1≦

17500 Å

, or 18500 Å

≦

T1≦

19500 Å

.

2. The system as claimed in claim 1, wherein the first color tuning element comprises a first color tuning layer, and the first color tuning layer is made of a material with a refractive index of between 1.6-2.2.

3. The system as claimed in claim 2, wherein the first color tuning element further comprises a second color tuning layer disposed between the first color tuning layer and the second electrode, wherein the second color tuning layer is made of a material with a refractive Index of between 1.4-1.6.

4. The system as claimed in claim 3, wherein the first color tuning element further comprises a third color tuning layer disposed on the first color tuning layer, wherein the third color tuning layer is made of a material with a refractive index of between 1.5-2.0.

5. The system as claimed in claim 1, wherein the organic electroluminescent device further comprises:

a stress relief layer disposed on the first color tuning element; and

a second color tuning element disposed on the stress relief layer, wherein the second color tuning element has a thickness range T2;

3500 Å

≦

T2≦

4500 Å

, 6500 Å

≦

T2≦

7500 Å

, 9500 Å

≦

T2≦

10500 Å

, 11000 Å

≦

T2≦

12000 Å

, 13500 Å

≦

T2≦

14500 Å

, 16500 Å

≦

T2≦

17500 Å

, or 18500 Å

≦

T2≦

19500 Å

.

6. The system as claimed in claim 5, wherein the stress relief layer comprises indium tin oxide, indium zinc oxide, aluminum zinc oxide, zincoxide, aluminium oxide, or combinations thereof.

7. The system as claimed in claim 5, wherein the stress relief layer has a refractive index of between 1.4-2.2.

8. The system as claimed in claim 5, wherein the first color tuning element comprises a first color tuning layer, and the first color tuning layer is made of a material with a refractive index of between 1.4-2.2.

9. The system as claimed in claim 8, wherein the first color tuning layer comprises silicon oxide, silicon nitride, silicon oxynitride, or combinations thereof.

10. The system as claimed in claim 8, wherein the second color tuning element comprises a second color tuning layer, and the second color tuning layer is made of a material with a refractive index of between 1.4-2.2.

11. The system as claimed in claim 10, wherein the second color tuning element further comprises a third color tuning layer disposed above or below the second color tuning layer, and the third color tuning layer is made of a material with a refractive index of between 1.4-1.6.

12. The system as claimed in claim 10, wherein the second color tuning element further comprises a third color tuning layer disposed above or below the second color tuning layer, and the third color tuning layer is made of a material with a refractive index of between 1.5-2.0.

13. The system as claimed in claim 5, wherein the stress relationship of the first color tuning element, the stress relief layer, and the second color tuning element is represented in sequence as compressive/tensile/compressive or tensile/compressive/tensile.

14. The system as claimed in claim 5, wherein the refractive index difference between any two of the first color tuning element, the stress relief layer, and the second color tuning element is not more than 1.

15. The system as claimed in claim 1, further comprising:

a color filter substrate disposed on the organic electroluminescent device, wherein the color filter substrate comprises a red pixel, a green pixel, and a blue pixel.

16. The system as claimed in claim 15, wherein parts of the first color tuning element respectively corresponding to the red pixel, the green pixel, and the blue pixel have different thickness.

17. The system as claimed in claim 15, wherein parts of the first color tuning layer respectively corresponding to the red pixel, the green pixel, and the blue pixel have the same thickness.

18. The system as claimed in claim 15, wherein the color filter substrate further comprises a white pixel, and parts of the first color tuning layer respectively corresponding to the red pixel, the green pixel, the blue pixel, and the white pixel have different thickness.

19. The system as claimed in claim 1, further comprising:

a display device comprising the organic electroluminescent device.

20. The system as claimed in claim 19, further comprising:

an electronic device, wherein the electronic device comprises the display device, and an input unit is coupled to the display device to provide input to the display device such that the display device displays images.