公开(公告)号：US09763288B2

公开(公告)日：2017-09-12

申请号：US14794196

申请日：2015-07-08

Applicant: TOPPAN PRINTING CO., LTD.

Inventor： Kohhei Moronaga ,  Hideaki Homma ,  Akihito Kagotani

IPC: G02B5/04 ,  H05B33/04 ,  G02B27/09 ,  H01L51/52 ,  H05B33/10 ,  H05B33/12 ,  H01L27/32

CPC classification number: H05B33/04 ,  G02B5/045 ,  G02B27/0961 ,  H01L27/3239 ,  H01L51/5262 ,  H01L51/5275 ,  H01L51/529 ,  H05B33/10 ,  H05B33/12

Abstract: An EL panel including: a light-transmissive substrate; an EL element including a light-emitting medium layer interposed between a cathode and an anode, the EL element being provided on one surface of the light-transmissive substrate; and a protection sheet on the other surface of the light-transmissive substrate of the EL element. The protection sheet has a surface opposite to the light-transmissive substrate, the shape of the surface includes rounded convex shapes and prism shapes. Each of the rounded shapes has an apex that is a center point of a cross-section farthest from a bottom surface where the cross-section is parallel to the bottom surface of the unit convex shape and the area becomes smaller in a direction from the bottom surface of the rounded convex shape to a top portion thereof.