摘要 |
<p>A light-emitting device comprises a layer including an emission region and provided between an anode and a cathode wherein the anode has a visible light (with a wavelength of 380 to 780 nm) transmittance ranging from 35 to 75%, and the anode has a work function of 3.0 to 7.0 eV whereby the device has an improved contrast characteristic while keeping high luminance. <IMAGE> <IMAGE></p> |