METHOD OF MANUFACTURING LIGHT EMISSION DEVICE

PROBLEM TO BE SOLVED: To provide a method of manufacturing a light emission device in which an electrode pattern is prevented from being deviated from an intended shape when an electrode of a light emission device containing an organic layer is formed according to film formation using a mask.SOLUTION: A light emission device manufacturing method comprises a step of forming, on a substrate 100, a light emission part having a first electrode, a second electrode and an organic layer disposed between the first electrode and the second electrode. In this step, the second electrode is deposited by using a mask 200 having at least two openings 204 arranged in a first direction. In the first direction, the lengths of the openings 204 are larger than the interval of the openings 204. By adjusting the interval ain the first direction of the openings 204, the distance Lfrom the mask 200 to a deposition source 220 and the distance Lfrom the mask 200 to the substrate 100, the second electrode is formed at a portion of the substrate 100 which is covered by a portion (intermediate portion 206) located between the two openings 204 on the mask 200 so that no nick is formed in the first direction.SELECTED DRAWING: Figure 8 【課題】有機層を含む発光装置の電極を、マスクを用いた成膜によって形成する場合において、電極のパターンが意図した形状からずれないようにする。【解決手段】基板１００に、第１電極、第２電極、及び前記第１電極と前記第２電極の間に位置する有機層と、を有する発光部を形成する工程を備える。この工程において、少なくとも２つの開口２０４が第１の方向に並んだマスク２００を用いて前記第２電極を蒸着する。第１の方向において、開口２０４の長さは開口２０４の間隔よりも大きい。そして、開口２０４の第１の方向の間隔ａ１、マスク２００から蒸着源２２０までの距離Ｌ１、及びマスク２００から基板１００までの距離Ｌ２を調節することにより、基板１００のうち、マスク２００の２つの開口２０４の間に位置する部分（中間部２０６）に覆われている部分に、第２電極を第１の方向に切れ目なく形成する。【選択図】図８