John Macaulay

US Patent:

56082835, Mar 4, 1997

Filed:

Jun 29, 1994

Appl. No.:

8/269283

Inventors:

Jonathan C. Twichell - Acton MA
George R. Brandes - Danbury CT
Michael W. Geis - Acton MA
John M. Macaulay - Palo Alto CA
Robert M. Duboc - Menlo Park CA
Christopher J. Curtin - Los Altos Hills CA

Assignee:

Candescent Technologies Corporation - San Jose CA

International Classification:

H01J 130

US Classification:

313309

Abstract:

In one electron-emitting device, non-insulating particle bonding material (24) securely bonds electron-emissive carbon-containing particles (22) to an underlying non-insulating region (12). The carbon in each carbon-containing particle is in the form of diamond, graphite, amorphous carbon, or/and silicon carbide. In another electron-emitting device, electron-emissive pillars (22/28) overlie a non-insulating region (12). Each pillar is formed with an electron-emissive particle (22) and an underlying non-insulating pedestal (28).

US Patent:

54632714, Oct 31, 1995

Filed:

Jul 9, 1993

Appl. No.:

8/090228

Inventors:

Michael W. Geis - Acton MA
John M. Macaulay - Palo Alto CA
Jonathan C. Twichell - Acton MA

Assignee:

Silicon Video Corp. - Cupertino CA
Massachusetts Institute of Technology - Cambridge MA

International Classification:

H01J 130
H01J 1924

US Classification:

313346R

Abstract:

A cathode structure contains electronegative atoms (22), which consist of oxygen and/or fluorine, chemically bonded to a carbon-containing cathode (10). Atoms (24R) of electropositive metal are chemically bonded to the electronegative atoms. The combination of the electropositive metal atoms and the electronegative atoms enhances the electron emissivity by reducing the work function.

US Patent:

57284350, Mar 17, 1998

Filed:

May 22, 1995

Appl. No.:

8/445618

Inventors:

Michael W. Geis - Acton MA
John M. Macaulay - Palo Alto CA
Jonathan C. Twichell - Acton MA

Assignee:

Candescent Technologies Corporation - San Jose CA
Massachusetts Institute of Technology - Cambridge MA

International Classification:

H05H 124
B05D 512

US Classification:

427535

Abstract:

A cathode structure is formed by a process in which a carbon-containing electron-emissive cathode is subjected to electronegative atoms that include oxygen and/or fluorine. The cathode is also subjected to atoms of electropositive metal, typically after being subjected to the atoms of oxygen and/or fluorine. The combination of the electropositive metal atoms and the electronegative atoms enhances the electron emissivity by reducing the work function.

US Patent:

56660251, Sep 9, 1997

Filed:

Oct 17, 1995

Appl. No.:

8/543981

Inventors:

Michael W. Geis - Acton MA
John M. Macaulay - Palo Alto CA
Jonathan C. Twichell - Acton MA

Assignee:

Candescent Technologies Corporation - San Jose CA

International Classification:

H01J 130
H01J 1924

US Classification:

313495

Abstract:

A flat-panel display contains an emissive cathode structure and a generally flat encapsulating body that surrounds the cathode structure to form a sealed enclosure. The cathode structure contains electronegative atoms (22), which consist of oxygen and/or fluorine, chemically bonded to a carbon-containing cathode (10). Atoms (24R) of electropositive metal are chemically bonded to the electronegative atoms.