Patent ID: 6773853
Filing Date: 2004-08-10
Classification: G03F

Abstract:
A method of manufacturing a semiconductor device, comprising:a first exposure step of exposing a partial area of a resist film formed on a surface of a substrate to light having a first intensity, first and second areas being defined on the surface of the substrate, the partial area being above the first area, and the light having the first intensity having transmitted through an area on a first reticle where a pattern to be transferred is formed; a second exposure step of exposing the resist film above the second area of the substrate to light having a second intensity weaker than the first intensity, a third exposure step of exposing the resist film above the first and second areas to light having a third intensity weaker than the first intensity, the light having the third intensity having transmitted through an area of a second reticle where a pattern to be transferred is formed; and a developing step of developing the resist film exposed, wherein an exposure amount of the resist film above the second area in said second exposure step is an exposure amount unable to develop the resist film in said developing step, an exposure amount in said third exposure step is also an exposure amount unable to develop the resist film in said developing step, and in the second area a total of the exposure amount in said second exposure step and the exposure amount in said third exposure step is an exposure amount sufficient for developing the resist film in said developing step.