Patent ID: 9733568
Date: 2017-08-15
CPC Classifications: G03F,H01L

Claim:
1. A method of developing, comprising: rotating a wafer at a first rotating speed; dispensing a developer solution onto the wafer at the first rotating speed by a first nozzle above the wafer, wherein the first nozzle moves back and forth along a path during dispensing the developer solution, wherein the path ranges from a center of the wafer to a point between the center of the wafer and an edge of the wafer, and a distance between the center of the wafer and the point is shorter than a radius of the wafer; rotating the wafer at a second rotating speed to spread the developer solution onto the wafer uniformly; and dispensing a rinse solution onto the wafer at the second rotating speed by a second nozzle above the wafer, wherein the second rotating speed is less than the first rotating speed.