Patent ID: 6888305
Filing Date: 2005-05-03
Classification: H01L

Abstract:
1. An OLED structure comprising: a substrate; an OLED over said substrate, said OLED comprising a first electrode, an emission region over said first electrode and a second electrode over said emission region, and said OLED emitting light having a range of wavelengths upon being turned on; and a multilayer mirror over said substrate, said multilayer mirror comprising an alternating series of (a) planarizing layers having a first refractive index and (b) high-density layers having a second refractive index that differs from said first refractive index, wherein the thicknesses of said planarizing layers and of said high-density layers are selected such that said multilayer mirror is tuned to transmit light at a peak wavelength within said range of wavelengths, and wherein said planarizing layers and said high-density layers cooperate to restrict transmission of water and oxygen.