Loading patent…
AssigneeSumitomo Electric Industries, Ltd.
InventorsNatsuo Tatsumi, Yoshiki Nishibayashi, Takahiro Imai, Tsuneo Nakahara
Estimating the term…
A logical operation element and logical operation circuit are provided that are capable of high speed and a high degree of integration. A logical operation circuit has a construction wherein, in a logical operation element, the anodes of first and second field emission type microfabricated electron emitters are put at the same potential and two or more signal voltages are input to gate electrodes corresponding to these emitters. A NOR element so arranged that when a high potential input signal is input to either of the two lines, electron emission occurs from the emitters and the potential of said anodes is lowered, and a NAND element wherein the cathodes of the first and second field emission type microfabricated electron emitters are connected in series, two signal voltages are applied to the gate electrodes corresponding to the first and second emitter and the anode potential of the second emitter is lowered when the two input signals are high potential are employed.
A NOR element of a design having the cathodes of two or more field emission type microfabricated electron emitters connected in parallel with a low potential power source or ground, two or more anodes corresponding to said emitters connected in parallel to a high potential power source through a passive element or an active element, the two or more anodes being substantially at the same potential, and gate electrodes corresponding to said emitters to receive two or more signal voltages, wherein the potential of said anodes is lowered by electron emission from the emitters when a high potential input signal is input to either of the two signals.
A logical operation circuit including the NOR element of as a logical operation element.
A NAND element wherein an anode of a first field emission type microfabricated electron emitter and a cathode of a second field emission type microfabricated electron emitter are connected in series and two signal voltages are applied to gate electrodes corresponding to the first emitter and the second emitter so that the anode potential of the second emitter is lowered when the two input signals are high potential.
A logical operation circuit including a NOR element and a NAND element as logical operation elements,
Dependencies are inferred from the claim text.