# US 9,040,965 B2 · Donor substrate, method of fabricating organic light-emitting display device, and organic light-emitting display device fabricated using the method

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- Number: US 9,040,965 B2
- Document ID: US9040965B2
- Status: Granted
- Kind: B2
- Application number: 13/957,876
- Filed: 2013-08-02
- Published: 2014-10-16
- Granted: 2015-05-26
- Earliest claimed: 2013-04-16
- Assignees: Samsung Display Co., Ltd.
- Applicants: Young Gil Kwon; Hyung Tag Lim
- Inventors: Young Gil Kwon; Hyung Tag Lim
- Web page: https://patentgrep.com/patent/US9040965B2

## CPC

- H10K 71/18: using non-liquid printing techniques, e.g. thermal transfer printing from a donor sheet
- Y02E 10/549: Organic PV cells
- H10K: ORGANIC ELECTRIC SOLID-STATE DEVICES
- Y02E: REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION

## Abstract

A donor substrate includes a base layer having a first surface and a second surface, a complementary hardness layer on the first surface of the base layer, and a transfer layer on the complementary hardness layer. A hardness of the complementary hardness layer is greater than that of the base layer.

## Claims

### Claim 1

A donor substrate for fabricating an organic light emitting device, the donor substrate comprising:
a base layer having a first surface and a second surface;
a complementary hardness layer on the first surface of the base layer; and
a transfer layer on the complementary hardness layer,
wherein a hardness of the complementary hardness layer is greater than that of the base layer.

### Claim 2 (depends on 1)

The donor substrate as claimed in claim 1, wherein the hardness of the complementary hardness layer is from about 0.15 to about 3 GPa.

### Claim 3 (depends on 2)

The donor substrate as claimed in claim 2, wherein the complementary hardness layer contains an acrylic resin or an alkyd resin.

### Claim 4 (depends on 1)

The donor substrate as claimed in claim 1, further comprising a light-to-heat conversion layer between the complementary hardness layer and the transfer layer.

### Claim 5 (depends on 1)

The donor substrate as claimed in claim 1, further comprising one or more opening patterns formed in the complementary hardness layer.

### Claim 6 (depends on 5)

The donor substrate as claimed in claim 5, wherein a horizontal cross-sectional shape of the opening patterns is any one of a triangle, a quadrangle, a pentagon, a hexagon, a polygon, a circle, a semicircle, or a combination of these shapes.

### Claim 7 (depends on 5)

The donor substrate as claimed in claim 5, wherein the light-to-heat conversion layer covers the complementary hardness layer and the opening patterns.

### Claim 8 (depends on 1)

The donor substrate as claimed in claim 1, further comprising a light-to-heat conversion layer between the complementary hardness layer and the base layer.

### Claim 9 (depends on 8)

The donor substrate as claimed in claim 8, further comprising one or more opening patterns formed in the complementary hardness layer.

### Claim 10 (depends on 9)

The donor substrate as claimed in claim 9, wherein at least one of the opening patterns is in a portion corresponding to a transfer region to which the transfer layer is to be transferred.

### Claim 11 (depends on 9)

The donor substrate as claimed in claim 9, wherein a horizontal cross-sectional shape of the opening patterns is any one of a triangle, a quadrangle, a pentagon, a hexagon, a polygon, a circle, a semicircle, or a combination of these shapes.

### Claim 12 (depends on 9)

The donor substrate as claimed in claim 9, wherein the transfer layer covers the complementary hardness layer and the opening patterns.

### Claim 13

A donor substrate for fabricating an organic light emitting device, the donor substrate comprising:
a base layer having a first surface and a second surface;
a transfer layer on the first surface of the base layer; and
a complementary hardness layer on the second surface of the base layer,
wherein a hardness of the complementary hardness layer is greater than that of the base layer.

### Claim 14 (depends on 13)

The donor substrate as claimed in claim 13, wherein the hardness of the complementary hardness layer is from about 0.15 to about 3 GPa.

### Claim 15 (depends on 13)

The donor substrate as claimed in claim 13, wherein the complementary hardness layer contains an acrylic resin or an alkyd resin.

### Claim 16 (depends on 13)

The donor substrate as claimed in claim 13, further comprising a light-to-heat conversion layer between the base layer and the transfer layer.

### Claim 17 (depends on 13)

The donor substrate as claimed in claim 13, further comprising one or more opening patterns formed in the complementary hardness layer.

### Claim 18 (depends on 17)

The donor substrate as claimed in claim 17, wherein at least one of the opening patterns is in a portion corresponding to a transfer region to which the transfer layer is to be transferred.

### Claim 19 (depends on 17)

The donor substrate as claimed in claim 17, wherein a horizontal cross-sectional shape of the opening patterns is any one of a triangle, a quadrangle, a pentagon, a hexagon, a polygon, a circle, a semicircle, or a combination of these shapes.