John Joseph Macaulay

US Patent:

6356014, Mar 12, 2002

Filed:

Mar 27, 1997

Appl. No.:

08/826454

Inventors:

Xueping Xu - Stamford CT
George R. Brandes - Danbury CT
Christopher J. Spindt - Menlo Park CA
Colin D. Stanners - San Jose CA
John M. Macaulay - Mountain View CA

Assignee:

Candescent Technologies Corporation - San Jose CA
Advanced Technology Materials, Inc. - Danbury CT

International Classification:

H01J 130

US Classification:

313497, 313309, 313336

Abstract:

A cathode structure suitable for a flat-panel display contains an emitter layer ( ) divided into emitter lines, a plurality of electron emitters ( , or ) situated over the emitter lines, and a gate layer ( A) having an upper surface spaced largely above the electron emitters. The gate layer has a plurality of gate holes ( B) each corresponding to one of the electron emitters. The cathode structure further includes a carbon-containing layer ( , or ) coated over the electron emitters and directly on at least part of the upper surface of the gate layer such that at least part of the carbon-containing layer extending along and above the gate layer is exposed.

US Patent:

6379210, Apr 30, 2002

Filed:

Nov 29, 2000

Appl. No.:

09/727023

Inventors:

Xueping Xu - Stamford CT
George R. Brandes - Danbury CT
Christopher J. Spindt - Menlo Park CA
Colin D. Stanners - San Jose CA
John M. Macaulay - Mountain View CA

Assignee:

Candescent Technologies Coporation - San Jose CA
Candescent Intellectual Property Services, Inc. - San Jose CA
Advanced Technology Materials, Inc. - Danbury CT

International Classification:

H01J 902

US Classification:

445 50, 445 24

Abstract:

A cathode structure suitable for a flat panel display is provided with coated emitters. The emitters are formed with material, typically nickel, capable of growing to a high aspect ratio. These emitters are then coated with carbon containing material for improving the chemical robustness and reducing the work function. One coating process is a DC plasma deposition process in which acetylene is pumped through a DC plasma reactor to create a DC plasma for coating the cathode structure. An alternative coating process is to electrically deposit raw carbon-based material onto the surface of the emitters, and subsequently reduce the raw carbon-based material to the carbon containing material. Work function of coated emitters is typically reduced by about 0. 8 to 1. 0 eV.

US Patent:

20020033663, Mar 21, 2002

Filed:

Sep 26, 2001

Appl. No.:

09/965197

Inventors:

Xueping Xu - Stamford CT, US
George Brandes - Danbury CT, US
Christopher Spindt - Menlo Park CA, US
Colin Stanners - San Jose CA, US
John Macaulay - Mountain View CA, US

International Classification:

H01J001/62

US Classification:

313/495000, 313/309000, 313/336000, 313/351000

Abstract:

A cathode structure suitable for a flat panel display is provided with coated emitters. The emitters are formed with material, typically nickel, capable of growing to a high aspect ratio. These emitters are then coated with carbon containing material for improving the chemical robustness and reducing the work function. One coating process is a DC plasma deposition process in which acetylene is pumped through a DC plasma reactor to create a DC plasma for coating the cathode structure. An alternative coating process is to electrically deposit raw carbon-based material onto the surface of the emitters, and subsequently reduce the raw carbon-based material to the carbon containing material. Work function of coated emitters is typically reduced by about 0.8 to 1.0 eV.

US Patent:

59003014, May 4, 1999

Filed:

Jan 3, 1997

Appl. No.:

8/779145

Inventors:

George E. Brandes - Danbury CT
Jonathan C. Twichell - Acton MA
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
Massachusetts Institute of Technology - Cambridge MA
Advanced Technology Materials, Inc. - Danbury CT

International Classification:

B05D 512

US Classification:

428 77

Abstract:

Fabrication of an electron-emitting device entails distributing electron-emissive carbon-containing particles (22) over a non-insulating region (12). The particles can be made electron emissive after the particle distributing step. Particle bonding material (24) is typically provided to bond the particles to the non-insulating region. The particle bonding material can include carbide formed by heating or/and can be created by modifying a layer (32) provided between the non-insulating region and the particles. In one embodiment, the particles emit electrons primarily from graphite or/and amorphous carbon regions. In another embodiment, the particles are made electron-emissive prior to the particle distributing step.