Patent ID: 6596082
Filing Date: 2003-07-22
Classification: H01L

Abstract:
A dual cup spin coating system for capturing a discharged flowable coating material in a spin coating process comprising:a first outer cup and a second outer cup said first outer cup concentrically disposed around the second outer cup forming a first capture space arranged for capturing at least a first portion of a discharged flowable coating material discharged from a process substrate at a first positive angle with respect to the process substrate in a spin coating process; an inner cup disposed concentrically within the second outer cup forming a second capture space arranged for capturing at least a second portion of the discharged flowable coating material discharged from the process substrate at a second positive angle less than about the first positive angle with respect to the process substrate in a spin coating process; said inner cup and outer cup respectively comprising first and second angled cup wall members each forming first intercept surfaces said first and second angled cup wall members terminated at a respective inner diameter to form second intercept surfaces wherein a perpendicular direction to said first and second intercept surfaces forms at least one intercept angle theta with respect to the process substrate surface for intercepting discharged material during a spin coating process to deflect the discharged material into at least one of the first and second capture spaces.