Patent ID: 7719201
Filing Date: 2010-05-18
Classification: B82Y,H01J,H03F

Abstract:
1. A microdevice comprising: an electron emitter including a memory for accumulating electric charges corresponding to an input voltage, for emitting electrons corresponding to the electric charges accumulated in said memory; and an amplifier connected to a power supply and including a collector electrode for capturing the electrons emitted from said electron emitter; wherein an atmosphere between at least said electron emitter and the collector electrode is a vacuum, wherein said input voltage is applied to said electron emitter in a first period to accumulate electric charges corresponding to a level of said input voltage in said electron emitter; wherein a voltage necessary to emit electrons is applied to said electron emitter in a second period to emit electrons corresponding to the accumulated electric charges from said electron emitter; and wherein said amplifier outputs a voltage corresponding to a collector current that flows in said collector electrode when said electrons are emitted from the electron emitter.