The invention relates to a source-
drain resistance-variable type H-shaped grid-controlled bidirectional switching
transistor and a manufacturing method thereof. According to the invention, the
transistor comprises an H-shaped grid
electrode and structural features which are symmetric on the left side and the right side. The
transistor is strong in grid control capability, and a
metal source / draininterchangeable region can be controlled as a source region or a drain region through adjusting the
electrode voltage of the source / drain interchangeable region. In this way, the direction of the
tunneling current is changed. The invention has the advantages of low static
power consumption,
reverse leakage current, strong grid control capability, low sub-threshold swing and bidirectional switchingfunction. Compared with a common MOSFETs-type device, more excellent switching characteristics are achieved through the tunneling effect. Compared with a common
tunneling field effect transistor, better switching characteristics are realized compared with a
Schottky barrier transistor. Meanwhile, the
doping is not needed in the source and drain regions, and the
Schottky barrier is easy to form. The H-shaped grid
electrode can better control the source and drain regions. Therefore, the transistor is suitable for popularization and application.