Donor film for laser induced thermal imaging method, light emitting device using the same, and method of manufacturing light emitting device
A donor film for a laser induced thermal imaging method capable of improving the optical efficiency of an emission layer, a light emitting device using the same, and a method of manufacturing the light emitting device are provided. The donor film for a laser induced thermal imaging method includes a base substrate, a light to heat conversion layer (LTHC) provided on the base substrate and having a pattern with a predetermined step difference, and a transfer layer provided on the LTHC. It is possible to improve the optical efficiency of the emission layer by patterning the transfer layer using the LTHC having the pattern with a predetermined step difference.
1. A method of manufacturing a light emitting device, the method comprising the steps of:
providing an acceptor substrate;
providing a donor film separated from said acceptor substrate by a predetermined distance and comprising a light to heat conversion layer including a transcription pattern with a predetermined step difference on a base substrate and a transfer layer provided on said light to heat conversion layer including the transcription pattern;
arranging said donor film so that said transfer layer faces the surface of said acceptor substrate; and
radiating a laser onto said donor film to transcribe the transfer layer onto said acceptor substrate.
2. The method as claimed in claim 1 , before the step of transcribing said transfer layer, further comprising forming a first electrode on the acceptor substrate.
3. The method as claimed in claim 2 , further comprising:
forming an active layer on said first electrode; and
forming a second electrode on said active layer.
4. The method as claimed in claim 1 , after the step of transcribing said transfer layer on the acceptor substrate, further comprising forming a first electrode on said transfer layer.
5. The method as claimed in claim 4 , further comprising:
forming an active layer on said first electrode; and
forming a second electrode on said active layer.
6. The method as claimed in claim 1 , wherein the step of transcribing said transfer layer includes transcribing protruding parts of said transfer layer first.
7. The method as claimed in claim 6 , wherein said pattern is a concavo-convex pattern or an embossed pattern.