单词	photomask
释义	photomask /ˈfəʊtəʊmɑːsk / noun Electronics A photographic pattern used in making microcircuits, ultraviolet light being shone through the mask on to a photoresist in order to transfer the pattern.Like the technologies used to create the photomasks and microchips, quality assurance tools such as mask and wafer inspection systems are both costly and challenging.... Microlithography projects a pattern from a photomask through an optical system to create IC chips using ultraviolet laser light. It appears that the costs of not only tools but of photomasks are poised to skyrocket.
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