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    • 5. 发明公开
    • 포토마스크 및 그 제조방법
    • 照相机及其制造方法
    • KR1020010062666A
    • 2001-07-07
    • KR1020000081237
    • 2000-12-23
    • 르네사스 일렉트로닉스 가부시키가이샤
    • 이노우에다까시
    • G03F1/54G03F1/38
    • G03F1/50
    • PURPOSE: To provide a photomask which prevents the degradation in pattern accuracy during etching by a difference in aperture ratios from appearing at a chip pattern 11 by improving the unbalance of the aperture ratios between the peripheral region of the chip pattern 11 and the central part of the chip pattern 11 and a method for manufacturing the photomask. CONSTITUTION: The circumference of the chip pattern 11 is peripherally provided with a peripheral aperture ratio regulation pattern 14 opened in the prescribed part of a light shielding film. The aperture ratio of the peripheral aperture ratio regulation pattern 14 is set at nearly the same average value of the aperture ratio over the entire part of the chip pattern 11 and the width thereof is set at >= 10 mm. The mask patterns meeting circuit design and eventually the resist patterns are obtained with good accuracy without appearance of the degradation in the accuracy of the pattern accuracy in the etching by a difference in the aperture ratios occurring in a so called loading effect at the chip pattern.
    • 目的:提供一种光掩模,其通过改善芯片图案11的周边区域和芯片图案11的中心部分之间的开口率的不平衡,防止在蚀刻期间孔径比的差异而出现在芯片图案11处的图案精度的劣化 芯片图案11和制造光掩模的方法。 构成:芯片图案11的周边在外周设置有在遮光膜的规定部分开口的周边开口率调节图案14。 外围孔径比调节图案14的开口率被设定为在芯片图案11的整个部分上的开口率的几乎相同的平均值,并且其宽度被设定为> = 10mm。 以良好的精度获得掩模图案满足电路设计并最终获得抗蚀剂图案,而不会出现通过在芯片图案上的所谓负载效应中出现的孔径比的差异而导致蚀刻中图案精度的精度降低。