Donor substrate and method for manufacturing organic light emitting diode display

1. A donor substrate for a laser transfer comprising:

a base layer;

a primer layer disposed on the base layer;

a light-to-heat conversion layer disposed on the primer layer; and

an intermediate layer disposed on the light-to-heat conversion layer,

wherein the light-to-heat conversion layer comprises a light-to-heat conversion material and thermosetting resin, and wherein the light-to-heat conversion material comprises graphene, and wherein the thermosetting resin comprises a polyurethane having a glass transition temperature between 10 to 50° C.;

wherein the light-to-heat conversion material is in a range of about 25 wt % to about 40 wt % based on a total weight of the light-to-heat conversion layer.

2. The donor substrate for the laser transfer of claim 1 , wherein

light transmittance of the base layer is greater than about 90%.

3. The donor substrate for the laser transfer of claim 2 , wherein

the base layer comprises glass, a transparent film or a polymer film.

4. The donor substrate for the laser transfer of claim 2 , wherein

a thickness of the base layer is in a range of about 0.025 millimeter to about 0.15 millimeter.

5. The donor substrate of claim 1 , wherein

the graphene of the light-to-heat conversion material comprises a graphene sheet.

6. The donor substrate of claim 1 , wherein

the graphene of the light-to-heat conversion material comprises a plurality of graphene pieces, and

the light-to-heat conversion layer further comprises a dispersion material in which the graphene pieces are dispersed.

7. The donor substrate of claim 6 , wherein

the dispersion material comprises tetrahydrofuran or dichlorobenzene.

8. The donor substrate of claim 1 , wherein

a thickness of the intermediate layer is in a range of about 1.0 micrometer to about 3.0 micrometers.