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    • 8. 发明申请
    • PATTERN FORMING METHOD
    • 图案形成方法
    • US20100304568A1
    • 2010-12-02
    • US12752684
    • 2010-04-01
    • Seiro MIYOSHIYasunobu KaiKentaro MatsunagaKeisuke KikutaniEishi ShiobaraShinya Takahashi
    • Seiro MIYOSHIYasunobu KaiKentaro MatsunagaKeisuke KikutaniEishi ShiobaraShinya Takahashi
    • H01L21/302G03F7/20
    • G03F1/34G03F7/095H01L21/0274H01L21/31144
    • A pattern forming method includes forming a first photoresist on an underlying region, forming a second photoresist on the first photoresist, the second photoresist having an exposure sensitivity which is different from an exposure sensitivity of the first photoresist, radiating exposure light on the first and second photoresists via a photomask including a first transmissive region and a second transmissive region which cause a phase difference of 180° between transmissive light components passing therethrough, the first transmissive region and the second transmissive region being provided in a manner to neighbor in an irradiation region, and developing the first and second photoresists which have been irradiated with the exposure light, thereby forming a structure includes a first region where the underlying region is exposed, a second region where the first photoresist is exposed and a third region where the first photoresist and the second photoresist are left.
    • 图案形成方法包括在下面的区域上形成第一光致抗蚀剂,在第一光致抗蚀剂上形成第二光致抗蚀剂,第二光致抗蚀剂具有不同于第一光致抗蚀剂的曝光灵敏度的曝光灵敏度, 通过包括第一透射区域和第二透射区域的光掩模进行光刻,所述第一透射区域和第二透射区域在穿过其中的透射光分量之间产生180°的相位差,第一透射区域和第二透射区域以照射区域相邻的方式设置, 以及显影已经用曝光光照射的第一和第二光致抗蚀剂,由此形成结构,其包括下部区域被暴露的第一区域,第一光致抗蚀剂被曝光的第二区域和第一光致抗蚀剂 剩下第二光致抗蚀剂。