Method for manufacturing organic EL device

A method for manufacturing an organic EL device on a transparent substrate including a display region and a non-display region, the display region having pixel regions, comprising:

• forming a plurality of first electrodes, a plurality of first leads and a plurality of second leads on the transparent substrate;
• depositing a photoresist layer over the entire transparent substrate covering the first electrode;
• aligning a first mask on a front side of the transparent substrate;
• aligning a second mask on a back side of the transparent substrate;
• forming, substantially simultaneously, an insulating layer and a plurality of partition walls, the insulating layers being formed on the display region other than the pixel regions of the display;
• forming an EL light emitting layer on the pixel regions;
• and
• forming a plurality of second electrodes on the EL light-emitting layer,
• wherein the plurality of first electrodes which are spaced apart from each other are connected to one of the plurality of first leads and are formed on the display region,
• wherein the plurality of first leads and the plurality of second leads are formed on the non-display region, and
• wherein the plurality of second electrodes are spaced apart from each other and are perpendicular to the plurality of first electrodes and are connected to one of the plurality of second leads.