Patent ID: 8111220
Filing Date: 2012-02-07
Classification: H01L

Abstract:
1. An EL device comprising: a substrate; an element-forming region provided on an upper surface of the substrate and having organic light-emitting elements; a protruding section arranged between the element-forming region and an end portion of the substrate; and a protection film deposited in a region extending from the element-forming region to the end portion of the substrate and disposed so as to cover the protruding section, wherein the protruding section has sidewalls that are inclined such that the bottom of the protruding section has a smaller width than the top of the protruding section, wherein the element-forming region further includes a partition wall arranged between two adjacent organic light-emitting elements, each of the partition wall and the protruding section has a reverse tapered cross-section in which the lower surface has a smaller width than the upper surface, and a difference between the width of the upper surface and the width of the lower surface in the protruding section is larger than a difference between the width of the upper surface and the width of the lower surface in the partition wall.