Patent ID: 8313843

Claim:
A donor substrate for Laser Induced Thermal Imaging (LITI) method, comprising: a base substrate; a light-to-heat conversion layer formed on the base substrate; and a transferring layer formed on the light-to-heat conversion layer, wherein, the transferring layer comprises: first and second light-emitting polymers having chemical elements forming a light-emitting polymer composition, and an additive which improves adhesion of the light-emitting composition to the base substrate and lowers the cohesion between the chemical elements of the first and second light-emitting polymers, wherein the first and second light-emitting polymers have different interfacial characteristics which lower a cohesion between the chemical elements of the first and second light-emitting polymers, and wherein a corresponding wavelength spectrum of the first light-emitting polymer overlaps a corresponding wavelength spectrum of the second light-emitting polymer in a wavelength range between 500 nm and 700 nm, so as to allow an energy transfer in the light-emitting polymer composition, and wherein the first light-emitting polymer has a mixing mass ratio in a range between 0.3 and 0.8, the second light-emitting polymer has a mixing mass ratio in a range between 0.2 and 0.7, and the additive has a mixing mass ratio of less than 0.7.