| 摘要 |
A semiconductor integrated circuit device comprising a negative differential resistance element, such as an RHET and RBT, and a field effect transistor, such as an SBFET and heterojunction type FET, which are formed on the same semiconductor substrate, a base layer of the negative differential resistance element and a channel layer of the field effect transistor being formed on the same epitaxial layer, and the same conductive material is used to simultaneously form an emitter electrode and a gate. A monolithic integration of both the element and transistor can be achieved both rationally and easily.
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