Patent ID: 8513142

Claim:
A method of manufacturing non-photosensitive polyimide passivation layer, the method comprising: a) providing a wafer on which a non-photosensitive polyimide passivation layer is to be formed; b) spin-coating a non-photosensitive polyimide layer over the wafer and baking it; c) depositing a silicon dioxide thin film over the non-photosensitive polyimide layer; d) spin-coating a photoresist layer over the silicon dioxide thin film and baking it; e) exposing and developing the photoresist layer to form a photoresist pattern; f) etching the silicon dioxide thin film by using the photoresist pattern as a mask to form a silicon dioxide pattern; g) removing the patterned photoresist layer; h) dry etching the non-photosensitive polyimide layer by using the silicon dioxide pattern as a mask to form a non-photosensitive polyimide pattern; i) removing the patterned silicon dioxide thin film; and j) forming an imidized polyimide passivation layer by curing the patterned non-photosensitive polyimide layer.