Method of manufacturing semiconductor device including exposing a dicing line on a wafer
View Patent ↗A method of manufacturing a semiconductor device, including the following steps, forming a resin layer on a surface of a semiconductor chip, the surface is provided with a bump formed thereon, the resin layer having photosensitivity and adhesiveness, exposing an upper surface of the bump by removing a part of the resin layer right above the bump by exposing and then developing the resin layer, and bonding the semiconductor chip provided with a resin film formed of the resin layer face-down to a substrate, the bump of the semiconductor chip and a conductive section of the substrate being electrically connected by the resin film functioning as an adhesive.
1. A method of manufacturing a semiconductor device, comprising:
forming a resin layer on a surface of a semiconductor chip, the surface is provided with a bump formed thereon, the resin layer having photosensitivity and adhesiveness;
exposing an upper surface of the bump by removing a part of the resin layer right above the bump by exposing and then developing the resin layer; and
bonding the semiconductor chip provided with a resin film formed of the resin layer face-down to a substrate such that the bump of the semiconductor chip and a conductive section of the substrate are electrically connected, with the resin film functioning as an adhesive,
wherein a number of the semiconductor chips are integrally formed on a wafer, a part of the resin layer right above a dicing line of the wafer is removed simultaneously in the exposing step to expose the dicing line.
2. The method of manufacturing a semiconductor device according to claim 1 , wherein a resin forming the resin layer is a photosensitive and thermoplastic resin or a precursor of the photosensitive and thermoplastic resin, and further comprising:
heating the resin layer to change the resin forming the resin layer into the resin film formed of a thermoplastic resin.
3. The method of manufacturing a semiconductor device according to claim 2 , wherein at least one of a photosensitive and thermoplastic resin forming the resin layer and a material of the photosensitive and thermoplastic resin including a precursor of the photosensitive and thermoplastic resin includes one of a thermoset resin and a component of the thermoset resin.
4. The method of manufacturing a semiconductor device according to claim 1 , wherein the resin layer is formed of a photosensitive and thermoset resin adhesive sheet.
5. The method of manufacturing a semiconductor device according to claim 1 , wherein a mark is formed on the semiconductor chip, a part of the resin layer right above the mark on the semiconductor chip is removed simultaneously in the exposing step to expose the mark.