Mother board of substrate for electronic device

Abstract

A mother board A of an electronic device substrate, provided with: a translucent substrate 1 having a first surface and a second surface facing each other in the thickness direction; a concavo-convexlayer 2 serving as a concavo-convex structure provided on the first surface 1a of the translucent substrate 1; and a translucent coating 3 covering the concavo-convex layer 2 and the first surface 1aof the translucent substrate 1. The outer peripheral edge 3E of the translucent coating layer 3 is located on the inner periphery side in relation to the outer peripheral edge 1E of the translucent substrate 1, and the outer peripheral edge 2E of the concavo-convex structure 2 is located on the inner periphery side in relation to the outer peripheral edge 3E of the translucent coating layer 3.

Description

technical field [0001] The present invention relates to a mother substrate of a substrate for electronic devices. Background technique [0002] In recent years, effective utilization of electric energy has become a major issue in society. Among them, low power consumption of lighting is an important issue, and the field of application of LED lighting with low power consumption is expanding. [0003] Light sources for illumination are roughly classified into directional light sources that illuminate a limited range and diffuse light sources that illuminate a wide range. Since LED lighting is equivalent to a directional light source, it is desired to replace fluorescent lamps which are equivalent to diffused light sources. As such an alternative light source, organic EL (electroluminescence) lighting is attracting attention as a next-generation thin surface light source. [0004] An organic EL element constituting an organic EL lighting is generally an element having the fol...

AI Technical Summary

Problems solved by technology

Generally, when a light-transmitting electrode and an organic layer are formed on a light-transmitting substrate such as a glass substrate, the light extraction efficiency is at best because the light generated in the organic layer is coupled to the waveguide mode or the substrate mode, or is absorbed by the cathode metal. Stop at 20% level

Images