Patent ID: 8765258
Filing Date: 2014-07-01
Classification: H05K,Y10T

Abstract:
1. A cover film, comprising: an adhesive layer; a composite material layer, comprising epoxy resin, a black material comprising at least one of a black pigment, carbon powder, nano carbon tube or a combination thereof, and an additive comprising at least one of titanium dioxide, boron nitride, barium sulfate or a combination thereof; and a core layer, comprising a polymer and disposed between the adhesive layer and the composite material layer, wherein the adhesive layer and the composite material layer have the same thickness or have a thickness difference being no more than 15 micro meters, the adhesive layer facilitates attachment of the composite layer and the core layer to a printed circuit board, and the cover film meets the anti-scratch standard of ISO class 1/ASTM class 4B.