Patent ID: 9653500
Date: 2017-05-16
CPC Classifications: H01L

Claim:
1. An optical cover plate for packaging, comprising: a transparent substrate; at least one annular dam structure disposed on said transparent substrate, wherein said annular dam structure has a hollow area to expose a surface of said transparent substrate, and said annular dam structure being made of an insulating material, and said annular dam structure and said transparent substrate are made of different materials; and a barrier layer completely covering a surface of said annular dam structure facing away from said transparent substrate, and at least two sidewalls of said annular dam structure facing said hollow area, and extending to directly cover at least a portion of said surface of said transparent substrate, such that said barrier layer presents a step shape, wherein said hollow area is only partially filled by said barrier layer, and said annular dam structure is present between the barrier layer and the transparent substrate.