Patent ID: 6790594
Filing Date: 2004-09-14
Classification: B41M,H01L

Abstract:
In a method of making a high absorption donor substrate which can be coated with one or more organic material layers and for use in providing one or more OLED materials to an OLED device in response to laser light substantially within a predetermined wavelength range, includes:(a) providing a transparent support element; (b) providing an absorber anti-reflection layer over the transparent support element, the anti-reflection layer selected to have the real portion of its index of refraction greater than 3.0, and a thickness selected to be near the first reflectivity minimum at the wavelength of interest; (c) providing a metallic heat-absorbing layer over the anti-reflection layer for absorbing laser light which passes through the transparent support element and the anti-reflection layer; (d) selecting the transparent support element, the anti-reflection layer, and the metallic heat-absorbing layer to have an average reflectivity of less than 10%, and the micro reflectivity variation due to variations in the thickness of the transparent support element of less than 10% at the wavelength of interest; and (e) providing one or more organic material layers in the absence of a binder material, over the metallic heat-absorbing layer which include organic material(s) which are transferable to an OLED device.