PLANAR LIGHT EMITTING DEVICE

摘要

This planar light emitting device includes an organic EL device comprising a light-transmitting substrate, first electrode, light emitting layer, and second electrode. A plurality of first terminal parts is arranged to the side of a right-angled rectangular shaped light emitting part in which the first electrode, light emitting layer and second electrode are stacked and are electrically connected to the first electrode. A plurality of second terminal parts is arranged to the side of the light emitting part and electrically connected to the second electrode. An auxiliary electrode is formed in the vicinity of the peripheral part of the surface on the opposite side from the substrate side for the first electrode and is electrically connected to the first electrode. The m second terminal parts and (m + 1) first terminal parts each along two parallel edges of the light emitting part are arranged such that first terminal parts are positioned on both sides in the direction of width of the second terminal parts, and here, m is an integer of 1 or more. The first terminal parts and second terminal parts are formed from a transparent conductive oxide layer and metal layer, respectively. The value for the total dimension of the width of the first terminal parts divided by the total dimension for the width of the second terminal parts is 0.33 - 0.67.