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    • 92. 发明公开
    • 이종접합쌍극자소자의제조방법
    • 制造异相双极晶体管的方法
    • KR1020000014894A
    • 2000-03-15
    • KR1019980034520
    • 1998-08-25
    • 한국전자통신연구원
    • 박성호박문평이태우박철순
    • H01L29/70
    • H01L29/66318H01L29/7371
    • PURPOSE: A method of manufacturing a heterojunction bipolar transistor is provided to better high speed and high frequency characteristics by improving the junction capacitance between a base and a collector. CONSTITUTION: A method of manufacturing a heterojunction bipolar transistor comprises the steps of: sequentially forming a buffer layer, sub-collector layer, a base layer, an emitter layer and an emitter cap layer on a semiconductor substrate; forming an emitter electrode on a selected region of the emitter cap layer; etching for making a pattern while exposing a selected region of the base layer and forming a polyimide layer on both sidewalls of patterned emitter cap and emitter layer; forming a base electrode on a selected region of the exposed base layer; etching for making a pattern while exposing a part of the collector layer and forming P-SiN layer on both sidewalls of a patterned base and a part of the collector layer; etching a remaining collector layer and a part of the sup-collector layer to be formed of an opposite inclination while exposing a part of the sub-collector layer and forming a collector electrode on a selected region of a remaining sub-collector layer; and making the patterned base layer, the collector layer and the sub-collector layer become a non-device region by thermal treatment.
    • 目的:通过改善基极和集电极之间的结电容,提供了制造异质结双极晶体管的方法,以获得更好的高速和高频特性。 构成:制造异质结双极晶体管的方法包括以下步骤:在半导体衬底上依次形成缓冲层,副集电极层,基极层,发射极层和发射极盖层; 在所述发射极盖层的选定区域上形成发射极; 蚀刻用于在暴露基底层的选定区域并在图案化发射极帽和发射极层的两个侧壁上形成聚酰亚胺层的同时形成图案; 在所述暴露的基底层的选定区域上形成基极; 蚀刻用于在露出集电极层的一部分并在图案化基底和集电极层的一部分的两个侧壁上形成P-SiN层的同时形成图案; 在剩余的副集电极层的选定区域上暴露一部分副集电极层并形成集电极,蚀刻余下的集电极层和集电极层的一部分,以形成相反的倾斜度; 并且通过热处理使图案化基底层,集电体层和副集电极层成为非器件区域。