Organic light-emitting display device and method of manufacturing the same

Patent metadata

Field	Value
Publication number	US-2016118587-A1
Application number	US-201614987602-A
Country	US
Kind code	A1
Filing date	Jan 4, 2016
Priority date	May 29, 2013
Publication date	Apr 28, 2016
Grant date	—

Abstract

An organic light-emitting display device includes a substrate which includes a plurality of areas, a plurality of first electrodes disposed on the areas of the substrate, respectively, a second electrode disposed on the first electrodes, and a plurality of emitting layers disposed between the first electrodes and the second electrode. At least two of the emitting layers are disposed on all of the areas.

First claim

What is claimed is:

1 . A method of manufacturing an organic light-emitting display device, the method comprising:
forming a plurality of first electrodes on a plurality of areas of a substrate, respectively; forming a plurality of emitting layers and a plurality of auxiliary layers on the first electrodes; and forming a second electrode on the emitting layers and the auxiliary layers, wherein at least two of the emitting layers are formed by a deposition process, and the auxiliary layers are formed by a transfer process.

2 . The method of claim 1 , wherein the areas comprise a first area, a second area and a third area, wherein the emitting layers comprise a first emitting layer, a second emitting layer and a third emitting layer, wherein the auxiliary layers comprise a first auxiliary layer and a second auxiliary layer, and wherein the forming of the emitting layers and the auxiliary layers comprises:
forming the first emitting layer and the first auxiliary layer in the first area by using a transfer process; forming the second auxiliary layer in the second area by using a transfer process; and forming the second emitting layer and the third emitting layer in the first area, the second area and the third area by using a deposition process.

3 . The method of claim 2 , wherein the forming of the emitting layers and the auxiliary layers comprises:
forming the third emitting layer on the first electrodes of the first area, the second area, and the third area; forming the first auxiliary layer and the first emitting layer simultaneously on the third emitting layer of the first area; forming the second auxiliary layer on the third emitting layer of the second area; and forming the second emitting layer on the third emitting layer, the first auxiliary layer, the first emitting layer, and the second auxiliary layer of the first area, the second area, and the third area.

4 . The method of claim 2 , wherein the forming of the emitting layers and the auxiliary layers comprises adjusting thicknesses of the emitting layers and the auxiliary layers such that red light is emitted from the first area, green light is emitted from the second area, and blue light is emitted from the third area.

5 . A method for manufacturing an organic light-emitting display device, the method comprising:
forming a plurality of first electrodes on a substrate including a first area, a second area and a third area, wherein the first electrodes are formed on the first, second and third areas of the substrate using a deposition process; forming a first medium layer on the first electrodes in the first, second and third areas using a deposition process; aligning a mask having an opening over the first medium layer; performing a deposition process on the first medium layer by depositing an organic material through the opening in the mask using a deposition source facing a surface of the first medium layer, thereby forming a first emitting layer on the first medium layer in the first area, the second area and the third area; forming a first auxiliary layer and a second light emitting layer simultaneously on the first emitting layer in the first area by a transfer process using a first donor substrate; forming a second auxiliary layer on the first emitting layer in the second area by a transfer process using a second donor substrate; aligning a mask having an opening over the second emitting layer, the second auxiliary layer and the first emitting layer; performing a deposition process on the second emitting layer, the second auxiliary layer and the first emitting layer by depositing an organic material through the opening in the mask using a deposition source facing respective surfaces of the second emitting layer, the second auxiliary layer and the first emitting layer, thereby forming a third emitting layer in the first area, the second area and the third area and on the respective surfaces of the second emitting layer, the second auxiliary layer and the first emitting layer; and sequentially stacking a second medium layer, a second electrode and a passivation layer on the third emitting layer using a deposition process.

6 . The method of claim 5 , wherein the first donor substrate includes a first base film, a first light-to-heat conversion layer disposed on the base film and a first transfer layer including an upper transfer layer and a lower transfer layer disposed on the first light-to-heat conversion layer, wherein the upper transfer layer is formed of a same material as the second emitting layer and the lower transfer layer is formed of a same material as the first auxiliary layer and wherein the forming a first auxiliary layer and the second emitting layer simultaneously on the first emitting layer in the first area by the transfer process using the first donor substrate comprises:
aligning the first transfer layer of the first donor substrate to face the first emitting layer, and irradiating laser beams onto the first area to thereby transfer the first transfer layer onto the first emitting layer in the first area such that the upper and lower transfer layers of the first transfer layer transferred onto the first emitting layer in the first area become the second emitting layer and the first auxiliary layer, respectively.

7 . The method of claim 5 , wherein the second donor substrate includes a second base film, a second light-to-heat conversion layer disposed on the second base film and a second transfer layer disposed on the second light-to-heat conversion layer, wherein the second transfer layer is formed of a same material as the second auxiliary layer and wherein the forming the second auxiliary layer on the first emitting layer in the second area by the transfer process using the second donor substrate comprises:
aligning the second transfer layer of the second donor substrate to face the first emitting layer, and irradiating laser beams onto the second area to thereby transfer the second transfer layer onto the first emitting layer in the second area such that the second transfer layer transferred onto the first emitting layer in the second area becomes the second auxiliary layer.

Assignees

• Samsung Display Co Ltd

Inventors

• Lee Chang Ho
• Yun Jin Young
• Shin Dae Yup
• Son Young Mok
• Oh Il Soo
• Ko Hee Joo
• Cho Se Jin
• Lee Bo Ra
• Lee Yeon Woo
• Jeon Pyung Eun
• Choi Hyun Ju
• Yoon Ji Hwan
• Kim Beom Joon

Classifications

• H10K71/18

  using non-liquid printing techniques, e.g. thermal transfer printing from a donor sheet · CPC title

• H10K50/13 Primary

  comprising stacked EL layers within one EL unit · CPC title

• H01L51/504

  Electricity · mapped topic

• H01L27/3218

  Electricity · mapped topic

• H01L51/56

  Electricity · mapped topic