Patent ID: 8398816

Claim:
A UV cure chamber, the chamber comprising one or more cure stations, each station comprising: a. a window having first and second sides; b. a UV light source mounted the first side of the window; c. a wafer support exposed to the UV source disposed on the second side of the window; d. an inlet for injecting a purge gas, the inlet positioned on the wafer support side of the window and configured to direct the purge gas in a direction non-parallel to and toward the second side of the window; and, e. an outlet for exhausting the purge gas, the outlet positioned opposite the inlet on the wafer support side of the window; wherein a major outlet area is a combined sectional surface area perpendicular to the wafer support plane of all features used for exhausting gases; wherein a major inlet area is a combined inlet sectional surface area of all features that serve as final restrictions on the inlet path of a gas; and a major outlet to major inlet surface area ratio is greater than 4 for at least one station and wherein a portion of the inlet unbroken by an outlet spans 75% or more of a perimeter around the wafer support.