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    • 4. 发明授权
    • Method of fabricating semiconductor device
    • 制造半导体器件的方法
    • US07335593B2
    • 2008-02-26
    • US11088644
    • 2005-03-24
    • Etsuko ArakawaKiyoshi KatoYoshiyuki Kurokawa
    • Etsuko ArakawaKiyoshi KatoYoshiyuki Kurokawa
    • H01L21/44
    • H01L29/78621H01L27/124H01L29/42384H01L2029/7863
    • A gate metal is formed in a film, the foregoing gate metal is partially etched per each TFT having a different property, and a gate electrode is fabricated. Specifically, a resist mask is fabricated by exposing a resist to light per each TFT having a different property which is required. A gate metal is etched per each TFT having a different property which is required using the foregoing resist mask. At this time, a gate metal covering a semiconductor active layer of a TFT except for the TFT during the time when the patterning of a gate electrode is performed is left as it is covered. The step of fabricating a gate electrode of each TFT may be performed under the conditions optimized in conformity with the required property.
    • 在薄膜中形成栅极金属,每个具有不同性质的TFT部分地蚀刻上述栅极金属,并且制造栅电极。 具体地,通过使每个TFT具有不同性质的抗蚀剂曝光光来制造抗蚀剂掩模。 每个TFT蚀刻栅极金属,其具有使用上述抗蚀剂掩模所需的不同性质。 此时,在覆盖栅电极的图案形成时的TFT以外的覆盖TFT的半导体有源层的栅极金属被覆盖。 可以在根据所需性能优化的条件下进行制造每个TFT的栅电极的步骤。