Chip protective film and method for manufacturing same, and chip
Disclosed are a chip protective film, a method for manufacturing the same, and a chip, which relate to the technical field of electronic chip protective films. The chip protective film includes: a first protective layer, and a second protective layer attached to at least a portion of a surface of the first protective layer. The second protective layer includes by mass: 90%-97% acrylate compounds; 0.1-5% fluorine-containing compounds; and a second adjuvant. The chip protective film features strong adhesion, low friction coefficient, high hardness, and good scratch resistance, which effectively solves the technical problem in the prior art that chip protective films are not scratch resistant.
1. A chip protective film, comprising a first protective layer, and a second protective layer on a surface of the first protective layer, wherein
the first protective layer is attached to a surface of a chip substrate;
the first protective layer comprises by mass:
35-40% epoxy resin; 22-28% curing agents; 30-40% silica; and a first adjuvant, wherein the first adjuvant comprises a first colorant;
the second protective layer comprises by mass:
90-97% acrylate compounds; 0.1-5% hexafluoropropylene-modified fluorine-containing compounds; and a second adjuvant;
wherein the acrylate compounds comprise at least one of dipentaerythritol hexaacrylate, pentaerythritol triacrylate, pentaerythritol tetraacrylate, dipentaerythritol hexamethacrylate, polyethylene glycol monomethyl ether methacrylate, and epoxy acrylate resin; and the second adjuvant comprises an initiator and a second colorant.
2. The chip protective film according to claim 1 , wherein the hexafluoropropylene-modified fluorine-containing compound comprises at least one of hexafluoropropylene oligomers and polyoxyethylene ether-modified hexafluoropropylene.
3. The chip protective film according to claim 1 , wherein the first protective layer has a thickness of 20000 nm to 50000 nm, and the second protective layer has a thickness of 100 nm to 500 nm.
4. The chip protective film according to claim 1 , wherein the epoxy resin is a compound of bisphenol A epoxy resin and bisphenol F epoxy resin; the curing agents comprises a naphthol-based curing agent.
5. The chip protective film according to claim 1 , wherein the first adjuvant comprises a curing accelerator.
6. A method for manufacturing the chip protective film according to claim 1 , comprising:
applying a first protective layer; and
applying a second protective layer on a surface of the first protective layer and post-curing to obtain the chip protective film.
7. A chip, comprising a chip substrate and a protective film attached to at least a portion of a surface of the chip substrate, wherein the protective film is the chip protective film according to claim 1 .