Method for fabricating OLED using roll to roll processing

Patent metadata

Field	Value
Publication number	US-9287529-B2
Application number	US-201414193612-A
Country	US
Kind code	B2
Filing date	Feb 28, 2014
Priority date	Nov 1, 2012
Publication date	Mar 15, 2016
Grant date	Mar 15, 2016

Abstract

A method for fabricating the OLED including a color conversion layer using roll-to-roll processing is provided. To elaborate, the method for fabricating an OLED comprising: bonding an OLED and an inorganic phosphor to each other through roll-to-roll processing is provided, wherein the inorganic phosphor is provided as a color conversion layer.

First claim

What is claimed is:

1. A method for fabricating an organic light emitting device (OLED), comprising:
bonding an OLED layer and an inorganic phosphor film to each other through roll-to-roll processing, wherein
the inorganic phosphor film is provided as a color conversion layer,
the inorganic phosphor film is an ultra-thin substrate having a stacking structure comprising an adhesive layer and an inorganic phosphor layer,
the OLED layer is a top emission OLED having a stacking structure comprising a penetrative cathode layer, an organic light emitting layer and a reflective anode layer, and
the adhesive layer of the inorganic phosphor film is bonded on the cathode layer of the top emission OLED.

2. A method for fabricating an organic light emitting device (OLED), comprising:
bonding an OLED layer and an inorganic phosphor film to each other through roll-to-roll processing, wherein
the inorganic phosphor film is provided as a color conversion layer,
the inorganic phosphor film is an ultra-thin substrate having a stacking structure comprising an adhesive layer and an inorganic phosphor layer,
the OLED layer is a bottom emission OLED having a stacking structure comprising a reflective cathode layer, an organic light emitting layer, and a penetrative anode layer, and
the adhesive layer of the inorganic phosphor is bonded on the anode layer of the bottom emission OLED.

3. The method for fabricating an organic light emitting device of claim 2 , wherein the inorganic phosphor film is produced in the manner that inorganic phosphor powders are contained in an ultra-thin vessel, and an adhesive is applied to the ultra-thin vessel.

4. The method for fabricating an organic light emitting device of claim 3 , wherein the ultra-thin vessel is any one of ultra-thin transparent plastic or ultra-thin glass.

5. The method for fabricating an organic light emitting device of claim 2 , further comprising providing the OLED layer and the inorganic phosphor film, which are in contact with each other on at least one surface of their respective surfaces, between a first roller and a second roller of roll-to-roll facility, prior to implementing the bonding through the roll-to-roll processing.

6. The method for fabricating an organic light emitting device of claim 2 , further comprising providing the OLED layer and the inorganic phosphor film, which are in contact with each other on at least one surface of their respective surfaces, on a top or bottom portion of a single roller of roll-to-roll facility, prior to implementing the bonding through the roll-to-roll processing.

7. The method for fabricating an organic light emitting device of claim 2 , further comprising providing the inorganic phosphor film in the state that it is wound around at least one roller of roll-to-roll facility, prior to implementing the bonding through the roll-to-roll processing.

8. The method for fabricating an organic light emitting device of claim 2 , wherein the OLED layer is a blue OLED.

9. A method for fabricating an organic light emitting device (OLED), comprising:
bonding an OLED layer and an inorganic phosphor film to each other through roll-to-roll processing, wherein
the inorganic phosphor film is provided as a color conversion layer,
the inorganic phosphor film has a stacking structure comprising an adhesive layer and an inorganic phosphor layer;
the OLED layer has a stacking structure comprising a penetrative cathode layer, an organic light emitting layer and a reflective anode layer; and
the bonding of the OLED layer and the inorganic phosphor film produces an OLED having a stacking structure in which the reflective anode layer, the organic light emitting layer, the penetrative cathode layer, the adhesive layer and the inorganic phosphor layer is stacked in that order.

10. A method for fabricating an organic light emitting device (OLED), comprising:
bonding an OLED layer and an inorganic phosphor film to each other through roll-to-roll processing,
wherein the inorganic phosphor film comprises an inorganic phosphor layer and an adhesive layer, and
wherein the OLED layer comprises, in the following order:
a barrier film layer contacting the adhesive layer,
a transparent cathode layer,
an electronic injection layer/electron transport layer,
an organic light emitting layer
a hole injection layer/hole transport layer,
an anode layer, and
a flexible substrate layer.

11. A method for fabricating an organic light emitting device (OLED), comprising:
bonding an OLED layer and an inorganic phosphor film to each other through roll-to-roll processing,
wherein the inorganic phosphor film comprises an inorganic phosphor layer and an adhesive layer, and
wherein the OLED layer comprises, in the following order:
a flexible substrate layer contacting the adhesive layer,
an anode layer,
a hole injection layer/hole transport layer,
an organic light emitting layer,
and electronic injection/electron transport layer,
a reflective layer, and
a barrier film layer.

12. The method for fabricating an organic light emitting device of claim 1 , wherein the inorganic phosphor film is produced in the manner that inorganic phosphor powders are contained in an ultra-thin vessel, and an adhesive is applied to the ultra-thin vessel.

13. The method for fabricating an organic light emitting device of claim 12 , wherein the ultra-thin vessel is any one of ultra-thin transparent plastic or ultra-thin glass.

14. The method for fabricating an organic light emitting device of claim 1 , further comprising providing the OLED layer and the inorganic phosphor film, which are in contact with each other on at least one surface of their respective surfaces, between a first roller and a second roller of roll-to-roll facility, prior to implementing the bonding through the roll-to-roll processing.

15. The method for fabricating an organic light emitting device of claim 1 , further comprising providing the OLED layer and the inorganic phosphor film, which are in contact with each other on at least one surface of their respective surfaces, on a top or bottom portion of a single roller of roll-to-roll facility, prior to implementing the bonding through the roll-to-roll processing.

16. The method for fabricating an organic light emitting device of claim 1 , further comprising providing the inorganic phosphor film in the state that it is wound around at least one roller of roll-to-roll facility, prior to implementing the bonding through the roll-to-roll processing.

17. The method for fabricating an organic light emitting device of claim 1 , wherein the OLED layer is a blue OLED.

Assignees

• Univ Sungkyunkwan Res & Bus

Inventors

• Chung Ho Kyoon
• Jo Deok Su
• Kim Bong Sung
• Cho Sung Min
• Yoo Min Sun

Classifications

• H10K71/40

  Thermal treatment, e.g. annealing in the presence of a solvent vapour · CPC title

• H10K71/00

  Manufacture or treatment specially adapted for the organic devices covered by this subclass · CPC title

• H10K71/50 Primary

  Forming devices by joining two substrates together, e.g. lamination techniques · CPC title

• H01L51/56 Primary

  Electricity · mapped topic

• H01L51/0024

  Electricity · mapped topic