MEASURING IN-SITU UV INTENSITY IN UV CURE TOOL
First Claim
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1. An ultraviolet (UV) apparatus, the apparatus comprising:
- a process chamber comprising a substrate holder and a window;
a UV radiation assembly external to the process chamber, the UV radiation assembly operable to direct UV radiation through the window towards the substrate holder;
a detector assembly comprising a UV radiation detector, one or more gas inlets and a gas outlet arranged so that a gas flow from the one or more gas inlets to the gas outlet flows over one or more optical surfaces of the UV radiation detector; and
a controller comprising instructions for;
flowing a gas mixture comprising an inert gas and molecular oxygen into the one or more gas inlets during operation of the UV detector.
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Abstract
Provided are improved apparatus and methods for radiative treatment. In some embodiments, a semiconductor processing apparatus for radiative cure includes a process chamber and a radiation assembly external to the process chamber. The radiation assembly transmits radiation into the chamber on a substrate holder through a chamber window. A radiation detector measures radiation intensity from time to time. The assembly includes a gas inlet and exhaust operable to flow a radiation-activatable cooling gas through the radiation assembly.
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Citations
18 Claims
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1. An ultraviolet (UV) apparatus, the apparatus comprising:
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a process chamber comprising a substrate holder and a window; a UV radiation assembly external to the process chamber, the UV radiation assembly operable to direct UV radiation through the window towards the substrate holder; a detector assembly comprising a UV radiation detector, one or more gas inlets and a gas outlet arranged so that a gas flow from the one or more gas inlets to the gas outlet flows over one or more optical surfaces of the UV radiation detector; and a controller comprising instructions for; flowing a gas mixture comprising an inert gas and molecular oxygen into the one or more gas inlets during operation of the UV detector. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An ultraviolet (UV) apparatus comprising:
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(a) a process chamber comprising a substrate holder and a window; and
,(b) a UV radiation assembly external to the process chamber, the assembly comprising one or more UV lamps, one or more reflectors operable to direct a portion of the UV radiation from the at one or more UV lamps through the window towards the substrate holder, a UV intensity detector positioned to receive UV radiation from the one or more UV lamps reflected through the window, a gas inlet, and a gas outlet, wherein the gas inlet and gas outlet are positioned such that a gas flow path from the gas inlet to the gas outlet includes an optical surface of the UV intensity detector. - View Dependent Claims (10)
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11. A method comprising:
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directing UV radiation from a UV radiation source external to a process chamber through a process chamber window; measuring UV radiation reflected from a substrate within the process chamber with a UV radiation detector located in a detector assembly external to the process chamber; flowing a coolant gas through detector assembly while measuring UV radiation such that the coolant gas contacts optical surfaces of the UV radiation detector, wherein the coolant gas comprises molecular oxygen. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18)
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Specification