Patent ID: 7699482
Filing Date: 2010-04-20
Classification: H01L

Abstract:
1. A light-emitting element which emits light using organic electroluminescence, comprising: a light-emitting portion having a higher refractive index than a refractive index of air, comprising: a color-separation filter formed on the other side of said substrate, a diffraction grating structure formed on said color-separation filter, having a pitch of a fine convex-concave structure being in a range from 1 μm to 4 μm, and a depth of the fine convex-concave structure being in a range from 0.4 μm to 4 μm, wherein said color separation filter is selected so that, when white light is emitted from said light-emitting portion, a minimum value of a spectral product obtained from a light-emission waveform of the white light and a spectral transmittance of said color-separation filter is equal to or less than 50% of a maximum value thereof.