Very high speed integrated microelectronic tubes

Claim 2

An array of microelectronic tubes comprising a substrate, an array of sharp needle-like cathode electrodes each with at least one tip carried by the substrate, each tube including an anode electrode spaced from the tip of a cathode electrode for receiving electrons emitted by field emission from said cathode electrode, insulating means separating and insulating said cathode electrodes from said anode electrodes, said insulating means including a plurality of through apertures into which the cathode electrodes extend, each tube containing a gas at a pressure of between about 1/100 and 1 atmosphere, and means for supplying operating voltages to the tubes whereby the mean free path of electrons travelling in said gas between said cathode and anode electrodes is equal to or greater than the spacing between the tip of the cathode electrode and the associated anode electrode and the maximum energy gained by the electrons is less than the ionization potential of the constituent gas.

Claim 3

An array of microelectronic tubes as defined in claim 1 wherein the interelectrode spacing between the cathode and anode electrodes of the tubes is ≦ about 0.5 μm.

Claim 4

An array of microelectronic tubes as defined in claim 1 wherein the gas comprises air.

Claim 5

An array of microelectronic tubes as defined in claim 1 wherein the gas comprises helium.

Claim 6

An array of microelectronic tubes as defined in claim 1 wherein the gas comprises neon.

Claim 7

An array of microelectronic tubes as defined in claim 1 wherein said substrate comprises a glass base with a layer of silicon thereon.

Claim 8

An array of microelectronic tubes as defined in claim 1 wherein said tubes comprise diodes, said array including rows of cathode connectors on the substrate connected to rows of said cathodes, and said array including rows of anode electrodes extending in a direction at right angles to the direction of the rows of cathode connectors.

Claim 9

An array of microelectronic tubes as defined in claim 1 wherein each said tube includes a gate electrode having an aperture therethrough in alignment with an associated aperture in said insulating means and into which gate aperture the tip of the associated cathode electrode extends.

Claim 10

An array of microelectronic tubes as defined in claim 1 wherein at least one of the cathode and anode electrodes is applied to the array of tubes in the presence of gas of the type and pressure contained in the tubes.

Claim 11

An array of microelectronic tubes comprising a substrate, an array of sharp needle-like cathode electrodes each with at least one tip formed on the substrate, each tube including a gate electrode having an aperture therethrough into which aperture the tip of an associated cathode electrode extends, insulating means separating and insulating said cathode electrodes from said gate electrodes, said insulating means including a plurality of through apertures in alignment with apertures in the gate electrodes, each tube including an anode electrode spaced from said gate and cathode electrodes for receiving electrons emitted by field emission from said cathode electrodes, each tube containing gas at a pressure of between about 1/100 and 1 atmosphere, and means for supplying operating voltages to the tubes, whereby the mean free path of electrons travelling in said gas between said cathode and anode electrodes is equal to or greater than the spacing between the tip of the cathode electrode and the associated anode electrode and the maximum energy gained by the electrons is less than the ionization potential of the constituent gas.

Claim 12

An array of microelectronic tubes comprising a substrate, an array of sharp needle-like cathode electrodes each with at least one tip formed on the substrate, each tube including a gate electrode having an aperture therethrough into which aperture the tip of an associated cathode electrode extends, insulating means separating and insulating said cathode electrodes from said gate electrodes, said insulating means including a plurality of through apertures in alignment with apertures in the gate electrodes, each tube including an anode electrode spaced from said gate and cathode electrodes for receiving electrons emitted by field emission from said cathode electrodes, each tube containing gas at a pressure of between about 1/100 and 1 atmosphere, and means for supplying operating voltages to the tubes, whereby the mean free path of electrons travelling in said gas between said cathode and anode electrodes is equal to or greater than the spacing between the tip of the cathode electrode and the associated anode electrode and the maximum energy gained by the electrons is less than the ionization potential of the constituent gas.

Claim 13

An array of microelectronic tubes as defined in claim 10 wherein the interelectrode spacing between the cathode and anode electrodes of the tubes is ≦ about 0.5 μm.

Claim 14

An array of microelectronic tubes as defined in claim 10 wherein the gas comprises air.

Claim 15

An array of microelectronic tubes as defined in claim 10 wherein the gas comprises helium.

Claim 16

An array of microelectronic tubes as defined in claim 10 wherein the gas comprises neon.

Claim 17

An array of microelectronic tubes as defined in claim 10 including insulating means separating and insulating said gate and anode electrodes and having a plurality of through apertures in alignment with the gate electrode apertures.

Claim 18

An array of microelectronic tubes as defined in claim 15 wherein said anode electrodes comprise a unitary conductive member associated with a plurality of said tubes.

Claim 19

An array of microelectronic tubes as defined in claim 15 wherein gas contained in the tubes is supplied by application of said unitary conductive member to the insulating means that separates and insulates the gate and anode electrodes in the presence of gas at a pressure of between about 1/100 and 1 atmosphere.

Claim 20

An array of microelectronic tubes as defined in claim 10 wherein said substrate comprises a glass base with a layer of silicon thereon, upon which silicon layer said cathode electrodes are formed.

Claim 21

An array of microelectronic tubes as defined in claim 10 wherein said insulating means separating and insulating said cathode electrodes from said gate electrodes comprises a layer of SiO 2 formed on said silicon layer.

Claim 22

An array of microelectronic tubes as defined in claim 10 wherein at least one of the cathode and gate electrodes is applied to the array of tubes in the presence of gas of the type and pressure contained in the tubes.