Michael M Potter

US Patent:

56295804, May 13, 1997

Filed:

Oct 28, 1994

Appl. No.:

8/331307

Inventors:

Jack A. Mandelman - Stormville NY
Michael D. Potter - Grand Isle VT

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

H01J 116

US Classification:

313310

Abstract:

Lateral field emission devices ("FEDs") for display elements and methods of fabrication are set forth. The FED includes a thin-film emitter oriented parallel to, and disposed above, a substrate. The FED further includes a columnar shaped anode having a first lateral surface. A phosphor layer is disposed adjacent to the first lateral surface. Specifically, the anode is oriented such that the lateral surface and adjacent phosphor layer are perpendicular to the substrate. The emitter has a tip which is spaced less than the mean free distance of an electron in air from the phosphor layer. Operationally, when a voltage potential is applied between said anode and said emitter, electrons are emitted from the tip of the emitter into the phosphor layer causing the phosphor layer to emit electromagnetic energy. Further specific details of the field emission device, fabrication method, method of operation, and associated display are set forth.

US Patent:

56043996, Feb 18, 1997

Filed:

Jun 6, 1995

Appl. No.:

8/470320

Inventors:

Jack A. Mandelman - Stormville NY
Michael D. Potter - Grand Isle VT

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

H01J 162
H01J 6304
H01J 146
H01J 142

US Classification:

313512

Abstract:

A lateral field emission device and method of fabricating the device which maximizes gate control of the cathode emitter electric field strength is disclosed. Gate control increases when the position of the gate edge is optimized with respect to the position of the emitter tip. Maximum control is achieved if the gate extends a distance beyond the emitter in the direction of the anode. Preferably, the displacement of the gate edge from the emitter tip is one half the cathode tip-anode distance for optimum control. The high gain device of the present invention provides improved transconductance.

US Patent:

57368104, Apr 7, 1998

Filed:

Apr 30, 1996

Appl. No.:

8/641252

Inventors:

Jack Allan Mandelman - Stormville NY
Michael David Potter - Grand Isle VT

Assignee:

International Business Machines Corporation - Armonk NY

International Classification:

H01J 116

US Classification:

313309

Abstract:

Lateral field emission devices ("FEDs") for display elements and methods of fabrication are set forth. The FED includes a thin-film emitter oriented parallel to, and disposed above, a substrate. The FED further includes a columnar shaped anode having a first lateral surface. A phosphor layer is disposed adjacent to the first lateral surface. Specifically, the anode is oriented such that the lateral surface and adjacent phosphor layer are perpendicular to the substrate. The emitter has a tip which is spaced less than the mean free distance of an electron in air from the phosphor layer. Operationally, when a voltage potential is applied between said anode and said emitter, electrons are emitted from the tip of the emitter into the phosphor layer causing the phosphor layer to emit electromagnetic energy. Further specific details of the field emission device, fabrication method, method of operation, and associated display are set forth.