TungYuan Chu is a notable inventor based in Shanghai, China. He has made significant contributions to the field of electronics, particularly in the development of advanced bipolar transistors. With a total of five patents to his name, his work has had a considerable impact on the industry.

Latest Patents

One of his latest patents is for a high voltage bipolar transistor with pseudo buried layers. This invention features a high voltage bipolar transistor with shallow trench isolation (STI) that includes collector areas formed by implanting first electric type impurities into the active area. The pseudo buried layers are created by implanting high doses of first type impurity through the bottoms of STI at both sides of the active area, ensuring they do not make direct contact. The design allows for a base deposited on the collector through epitaxial growth, which is in-situ doped with second electric type impurity. This innovation enhances the depletion region of the collector/base junction from a one-dimensional to a two-dimensional distribution, resulting in increased breakdown voltages at a low cost.

Another significant patent involves a parasitic vertical PNP bipolar transistor and its fabrication method in the BiCMOS process. This invention describes a bipolar transistor comprising a collector, base, and emitter, with the collector formed by an active region with a p-type ion implanting layer. The base is created from an active region with n-type ion implanting on the collector, while the emitter is formed by a heavily doped p-type epitaxy layer on the base region. This PNP bipolar transistor can serve as an IO device in high-speed, high-current, and power gain BiCMOS circuits, providing a low-cost device option.

Career Highlights

TungYuan Chu is currently employed at Shanghai Hua Hong NEC Electronics Company Limited. His work at this company has allowed him to further his research and development in semiconductor technology, contributing to the advancement of electronic devices.

Collaborations

Some of his notable coworkers include Tzuyin Chiu and YungChieh Fan. Their collaboration has likely fostered an environment of innovation and creativity within their projects.

Conclusion

TungYuan Chu's contributions to the field of electronics through his patents and work at Shanghai Hua Hong NEC Electronics Company Limited highlight his role as a significant inventor. His innovations in bipolar transistors are paving the

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