Substrate structure with high reflectance and method for manufacturing the same
A substrate structure with high reflectance includes a base material, a patterned circuit layer, an insulating layer and a metal reflecting layer. The base material includes a first surface and a second surface opposite to the first surface. The patterned circuit layer is disposed on the first surface. The insulating layer covers the patterned circuit layer and a part of the first surface exposed by the patterned circuit layer. The metal reflecting layer covers the insulating layer, and a reflectance of the metal reflecting layer is substantially greater than or equal to 85%. A manufacturing method of a substrate structure with high reflectance is also provided.
1. A substrate structure with high reflectance, comprising:
a base material comprising a first surface and a second surface opposite to the first surface;
a first patterned circuit layer disposed on the first surface;
a second patterned circuit layer disposed on the second surface;
a first insulation layer covering the first patterned circuit layer and a portion of the first surface exposed by the first patterned circuit layer;
a metal reflection layer covering the first insulation layer, wherein a reflectance of the metal reflection layer is substantially greater than or equal to 85% and there is no conductive material between the first patterned circuit layer and the metal reflection layer; and
a first ink layer disposed between the first insulation layer and the metal reflection layer.
2. The substrate structure with high reflectance as claimed in claim 1 , wherein a material of the metal reflection layer comprises aluminum, silver, gold, copper, ruthenium, chromium, molybdenum, platinum, nickel, iron layers or any combination thereof.
3. The substrate structure with high reflectance as claimed in claim 1 , wherein the first insulation layer comprises an ink layer, a polyimide layer, a thermoplastic polyimide layer, a resin layer, a photo-imageable coverlay (PIC), a dry film solder resist (DFSR) layer or an insulation adhesive layer.
4. The substrate structure with high reflectance as claimed in claim 1 , further comprising a conductive vias extending through the base material and electrically connecting the first patterned circuit layer and the second patterned circuit layer.
5. The substrate structure with high reflectance as claimed in claim 1 , wherein the first ink layer comprises a baking type ink layer or a liquid photo imageable ink layer.
6. The substrate structure with high reflectance as claimed in claim 1 , wherein the first ink layer comprises a coloured ink layer.
7. The substrate structure with high reflectance as claimed in claim 1 , further comprising a second insulation layer covering the second patterned circuit layer.
8. The substrate structure with high reflectance as claimed in claim 7 , further comprising a second ink layer covering the second insulation layer.
9. The substrate structure with high reflectance as claimed in claim 8 , wherein the second ink layer comprises a baking type ink layer or a liquid photo imageable ink layer.
10. The substrate structure with high reflectance as claimed in claim 8 , wherein the second ink layer comprises a coloured ink layer.