Patent ID: 6521548
Filing Date: 2003-02-18
Classification: H01L

Abstract:
A method of forming a spin-on-passivation layer quickly on a semiconductor wafer, the method comprising:spinning on a spin-on-dielectric (SOD) layer on the semiconductor wafer; performing a first stage curing process by utilizing a plurality of first hot plates fixed at different temperatures to heat the semiconductor wafer so as to expel solvent from the SOD layer; and performing a second-stage curing process by utilizing a second hot plate to heat the semiconductor wafer to cure the SOD layer for a predetermined time, the second hot plate disposed in an air-sealed chamber having an oxygen content that is under 100 ppm; wherein the temperature of the second hot plate is fixed at a second predetermined temperature that is higher than the temperatures of the first hot plates, and the predetermined time is less than or equal to ten minutes.