Patent ID: 7652420

Claim:
An organic electroluminescent device including an anode, an organic layer and a cathode, comprising: a substrate; a wiring formed on the substrate, the wiring having a first thickness in a first direction, the wiring electrically connecting to an external circuit in the first direction, the wiring extending from a first end to a second end in a second direction; and an insulating layer extending from a first portion of the insulating layer on the first end of the wiring to a second portion of the insulating layer on the substrate, and the insulating layer extending from a third portion of the insulating layer on the second end of the wiring to a fourth portion of the insulating layer on the substrate, the wiring being partially exposed from the insulating layer to contact the cathode, the insulating layer having a second thickness in the first direction at the second portion of the insulating layer, wherein the second thickness of the insulating layer at the second portion is 0.2 μm to 3 μm, and the first thickness of the wiring is 0.1 μm to 0.7 μm, and wherein the second thickness of the insulating layer at the second portion is 0.3-30 times the first thickness of the wiring, wherein thickness in the first direction of the first portion of the insulating layer is different than thickness in the first direction of the second portion of the insulating layer, and thickness of the third portion of the insulating layer is different than thickness in the first direction of the fourth portion of the insulating layer.