Patent ID: 7855506
Filing Date: 2010-12-21
Classification: H01L

Abstract:
1. An electroluminescence element which emits light at least by application of a voltage to a first electrode and a second electrode, comprising: a light emitting portion and a non-light emitting portion, wherein the light emitting portion and the non-light emitting portion are provided for bringing the luminance distribution of the element into a state, wherein the light emitting portion and the non-light emitting portion are provided so that the luminance distribution is uniform as a whole, wherein a volume resistivity of the first electrode is higher than that of the second electrode, the first electrode being formed in a flat form, and the non-light emitting portion is provided so that the area occupied by the non-light emitting portion per unit area is greater at a position physically closer to the position of a terminal portion of the first electrode, and wherein the non-light emitting portion is constructed by providing a part made of material having a work function larger than that of a material of a cathode of the pair of electrodes between the cathode and the electroluminescence element.