Patent ID: 8809811
Filing Date: 2014-08-19
Classification: G02B,G03B

Abstract:
1. A display screen, comprising: a light-emitting layer configured to emit visible light in a first wavelength range under irradiation of excitation light in a second wavelength range distinct from the first wavelength range, the light-emitting layer having a first side facing a viewer side of the display screen, and a second side facing an excitation side of the display screen; an excitation filter layer disposed on the excitation side of display screen relative to the light-emitting layer, and configured to selectively reflect the visible light in the first wavelength range and transmit the excitation light in the second wavelength range; and an intermediate layer disposed between and adjacent to the light-emitting layer and the excitation filter layer, wherein the intermediate layer comprises one or more first regions in contact with the light-emitting layer, and a second region separating the one or more first regions from the excitation filter layer, and wherein the second region has a bridging refractive index between a first refractive index of the one or more first regions and a second refractive index of the excitation filter layer.