BIPOLAR JUNCTION TRANSISTOR (BJT) AND FABRICATING METHOD THEREOF

Bipolar junction transistor (BJT) structures are provided. A BJT structure includes a semiconductor substrate, a collector region formed in the semiconductor substrate, a base region formed over the collector region, an emitter region formed over the collector region, a ring-shaped shallow trench is...

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Bibliographische Detailangaben
Hauptverfasser: CHEN, Kuan-Jung, LEE, Tsung-Lin, CHEN, Hung-Lin, LIN, Shiuan-Jeng, LIN, Chun-Ming
Format: Patent
Sprache:eng
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Zusammenfassung:Bipolar junction transistor (BJT) structures are provided. A BJT structure includes a semiconductor substrate, a collector region formed in the semiconductor substrate, a base region formed over the collector region, an emitter region formed over the collector region, a ring-shaped shallow trench isolation (STI) region formed in the collector region, and a base dielectric layer formed over the collector region and on opposite sides of the base region. The base dielectric layer is surrounded by an inner side wall of the ring-shaped STI region.