LIGHT EMITTING DEVICE

To suppress leakage of light from a surface opposite to a light emitting surface in a transmission type light emitting device.SOLUTION: A light emitting part 140 is formed on a substrate 100 and includes a translucent first electrode 110, a light reflective second electrode 130 and an organic layer 120 located between the first electrode 110 and the second electrode 130. A translucent region is located between the plurality of light emitting parts 140. An insulation film 150 defines an end 142 of the light emitting part 140. A sealing member 200 is fixed to the light emitting part 140 directly or via an adhesive layer 210. When the thickness of the substrate 100 is defined as d, and the width of a portion on the outer side of the light emitting part 140 with respect to the end 142 of the second electrode 130 is defined as W, d/2≤W is satisfied.SELECTED DRAWING: Figure 1 【課題】透過型の発光装置において、発光面とは逆の面から光を漏れにくくする。【解決手段】発光部１４０は、基板１００に形成され、透光性の第１電極１１０、光反射性の第２電極１３０および、第１電極１１０と第２電極１３０との間に位置する有機層１２０を有する。透光性領域は、複数の発光部１４０の間に位置する。絶縁膜１５０は、発光部１４０の端部１４２を画定する。封止部材２００は、直接、又は接着層２１０を介して発光部１４０に固定されている。そして、基板１００の厚さをｄとし、第２電極１３０のうち端部１４２よりも発光部１４０の外側の部分の幅をＷとしたとき、ｄ／２≦Ｗが成り立つ。【選択図】図１