Organic light-emitting display and fabricating method thereof

• US 20070046195A1
• Filed: 08/29/2006
• Published: 03/01/2007
• Est. Priority Date: 08/31/2005
• Status: Abandoned Application

• Current Assignee: Univision Technology Inc.
• Original Assignee: Univision Technology Inc.
• Inventors: Chiang, Chien-Chih, Chang, Joel, Chin, Chih-Ming, Lan, Wen-Jeng
• Application Number:
  US11/511,486
• Publication Number:
  US 20070046195A1
• Time in Patent Office: Days
• US Class Current: 313/506
• CPC Class Codes: H10K 50/125 specially adapted for multicolour light emission, e.g. for emitting white light
• CPC Class Codes: H10K 59/35 comprising red-green-blue [RGB] subpixels
• CPC Class Codes: H10K 59/38 comprising colour filters or colour changing media [CCM]
• CPC Class Codes: H10K 71/164 using vacuum deposition
• CPC Class Codes: H10K 71/166 using selective deposition, e.g. using a mask

Abstract

An organic light-emitting display (OLED) is provided. The OLED comprises a plurality of pixels on a substrate. Each pixel on the substrate comprises a first electrode, an organic luminescent layer and a second electrode in sequence. The first electrode comprises a first subpixel region, a second subpixel region and a third subpixel region. The organic luminescent layer comprises a first organic luminescent layer and a second organic luminescent layer. The first organic luminescent layer is above the first subpixel region and the second subpixel region. The second organic luminescent layer is above the second subpixel region and the third subpixel region. The fabricating method of the OLED is disclosed in the specification too.

Claims

1. An organic light-emitting display comprising a plurality of pixels located on a substrate, wherein each of the pixels comprises:

a first electrode located on the substrate and having a first subpixel region, a second subpixel region and a third subpixel region;

a first organic luminescent layer located above the first subpixel region and the second subpixel region;

a second organic luminescent layer located above the second subpixel region and the third subpixel region; and

a second electrode located on the first and the second organic luminescent layers.

2. The organic light-emitting display of claim 1, wherein the second organic luminescent layer above the second subpixel region is on the first organic luminescent layer or under the first organic luminescent layer.

3. The organic light-emitting display of claim 1, further comprising a color filter between the substrate and the first electrode, the color filter comprising a first color filter layer, which comprises a first color photoresist, a second color photoresist and a third color photoresist located on the vertically extended region of the first subpixel region, the second subpixel region and the third subpixel region, respectively.

4. The organic light-emitting display of claim 3, further comprising a plurality of thin film transistors being electrically connected to the first electrode on the first subpixel region, the second subpixel region and the third subpixel region, respectively.

5. The organic light-emitting display of claim 3, further comprising a planar layer on the first color filter layer, wherein the planar layer is an over coat layer, a barrier layer or a combination thereof.

6. The organic light-emitting display of claim 3, further comprising a cover located above the substrate, the bottom of the cover having a second color filter layer, which comprises a fourth color photoresist, a fifth color photoresist and a sixth color photoresist located on the vertically extended region of the first subpixel region, the second subpixel region and the third subpixel region, respectively.

7. The organic light-emitting display of claim 6, further comprising a plurality of thin film transistors being electrically connected to the first electrode on the first subpixel region, the second subpixel region and the third subpixel region, respectively.

8. The organic light-emitting display of claim 1, further comprising a cover located above the substrate, the bottom of the cover having a second color filter layer, which comprises a fourth color photoresist, a fifth color photoresist and a sixth color photoresist located on the vertically extended region of the first subpixel region, the second subpixel region and the third subpixel region, respectively.

9. The organic light-emitting display of claim 8, further comprising a plurality of thin film transistors being electrically connected to the first electrode on the first subpixel region, the second subpixel region and the third subpixel region, respectively.

10. The organic light-emitting display of claim 1, further comprising a hole injection layer, a hole transporting layer, an organic luminescent layer, an electron transporting layer, an electron injection layer or a combination thereof between the first electrode and the second electrode.

11. The organic light-emitting display of claim 1, wherein the first organic luminescent layer and the second organic luminescent layer comprise an organic luminescent layer selected from a group consisting of mono-layer organic luminescent layer, multiple-layer organic luminescent layer and a doped organic luminescent layer.

12. The organic light-emitting display of claim 1, wherein the first organic luminescent layer produces a first light source, the second organic luminescent layer produces a second light source, and the overlap of the first organic luminescent layer and the second organic luminescent layer produces a third light source.

13. The organic light-emitting display of claim 12, wherein the first light source and the second light source are complementary light sources.

14. A method of manufacturing organic light-emitting display comprising:

forming a first electrode on the substrate;

defining a first subpixel region, a second subpixel region and a third subpixel region on the first electrode;

forming a first organic luminescent layer on the first and the second subpixel regions;

forming a second organic luminescent layer on the second and the third subpixel regions; and

forming a second electrode above the first and the second organic luminescent layers.

15. The organic light-emitting display manufacturing method of claim 14, wherein the forming procedure of the first organic luminescent layer comprises:

using a first mask to shield the third subpixel region; and

using a first evaporation source to deposit the first organic luminescent layer on the first and the second subpixel region.

16. The organic light-emitting display manufacturing method of claim 14, wherein the forming procedure of the second organic luminescent layer comprises:

using a second mask to shield the first subpixel region; and

using a second evaporation source to deposit the second organic luminescent layer on the second and the third subpixel region.