Kenneth A Dean

US Patent:

6373174, Apr 16, 2002

Filed:

Dec 10, 1999

Appl. No.:

09/459119

Inventors:

Albert Alec Talin - Scottsdale AZ
Curtis D. Moyer - Phoenix AZ
Kenneth A. Dean - Phoenix AZ
Jeffrey H. Baker - Chandler AZ
Steven A. Voight - Gilbert AZ

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

H01J 102

US Classification:

313309, 313310, 313351, 313495, 313497, 445 24

Abstract:

A field emission device ( ) includes a substrate ( ), a cathode ( ) formed thereon, a plurality of electron emitters ( ) and a plurality of gate electrodes ( ) proximately disposed to the plurality of electron emitters ( ) for effecting electron emission therefrom, a dielectric layer ( ) having a major surface ( ), a surface passivation layer ( ) formed on the major surface ( ), and an anode ( ) spaced from the gate electrodes ( ).

US Patent:

6459198, Oct 1, 2002

Filed:

May 17, 2000

Appl. No.:

09/572157

Inventors:

Kenneth A. Dean - Phoenix AZ
Babu R. Chalamala - Chandler AZ
Dave Uebelhoer - Tempe AZ
Craig Amrine - Tempe AZ

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

H01J 926

US Classification:

313493, 445 25, 445 41

Abstract:

A method of fabricating a high vacuum display with flat form factor, and the display, include an envelope with two major, parallel spaced apart glass sides and a continuous edge therebetween. An opening is formed through one of the glass sides of the envelope. A plate is provided with an area larger than the opening in the envelope. A button with an area slightly smaller than the opening may be formed on one side of the plate. A low temperature melting material is positioned on the plate around the button and the envelope is positioned in a substantial vacuum. The button is placed in the opening with the plate abutting the glass side outside of the envelope and the low temperature melting material is melted using heat and/or pressure to sealingly engage the button within the opening.

US Patent:

6645028, Nov 11, 2003

Filed:

Jun 7, 2000

Appl. No.:

09/589018

Inventors:

Kenneth A. Dean - Phoenix AZ
Babu R. Chalamala - Chandler AZ

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

H01J 944

US Classification:

445 6

Abstract:

A method for improving uniformity of emission current of a field emission display ( ) includes the step of providing a first carbon nanotube ( ) and a second carbon nanotube ( ), which at least partially define an electron emitter ( ). First carbon nantotube ( ) is characterized by a first emission current capability and second carbon nanotube ( ) is characterized by a second emission current capability, which is less than the first emission current capability. The method further includes the steps of causing first carbon nanotube ( ) to be reduced in length at a first rate and, concurrently, causing second carbon nanotube ( ) to be reduced in length at a second rate, which is less than the first rate and can be equal to zero, thereby reducing the difference between the second emission current capability and the first emission current capability and, thus, improving uniformity of emission current. The selective reductions in length are preferably achieved by performing the step of causing a burn-in current to be emitted by electron emitter ( ).

US Patent:

6656339, Dec 2, 2003

Filed:

Aug 29, 2001

Appl. No.:

09/942496

Inventors:

Albert A. Talin - Scottsdale AZ
Bernard F. Coll - Fountain Hills AZ
Kenneth A. Dean - Phoenix AZ
Matthew Stainer - Goleta CA

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

C25D 1500

US Classification:

205109, 205157, 205159, 205162, 205191, 205192, 205193, 205333, 427 64, 427 69, 4272491, 42724911, 423414

Abstract:

Methods of forming a nano-supported catalyst on a substrate and at least one carbon nanotube on the substrate are comprised of configuring a substrate with an electrode ( ), immersing the substrate with the electrode into a solvent containing a first metal salt and a second metal salt ( ) and applying a bias voltage to the electrode such that a nano-supported catalyst is at least partly formed with the first metal salt and the second metal salt on the substrate at the electrode ( ). In addition, the method of forming at least one carbon nanotube is comprised of conducting a chemical reaction process such as catalytic decomposition, pyrolysis, chemical vapor deposition, or hot filament chemical vapor deposition o grow at least one nanotube on the surface of the nano-supported catalyst ( ).

US Patent:

6885152, Apr 26, 2005

Filed:

Mar 28, 2003

Appl. No.:

10/402119

Inventors:

Scott V. Johnson - Scottsdale AZ, US
Bernard F. Coll - Fountain Hills AZ, US
Kenneth A. Dean - Phoenix AZ, US

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

H01J023/08

US Classification:

315 535, 313447

Abstract:

An exemplary system and method for providing a multi-layer klystron-type electron beam device for the generation and amplification of millimeter-wave electromagnetic radiation is disclosed as comprising inter alia: a cathode layer (); a collector layer (); an extraction layer (); a control layer (); an input cavity (); an output cavity (); several ceramic spacer layers () dispose intermediately between the cathode () and the collector (); and optionally, several magnetic ceramic layers () for beam forming and focusing. After the klystron's layers are assembled, the device may be fired to form a substantially monolithic structure.

US Patent:

6890230, May 10, 2005

Filed:

Aug 28, 2001

Appl. No.:

09/940756

Inventors:

Johann Trujillo - Goleta CA, US
Albert Alec Talin - Scottsdale CA, US
Kenneth Andrew Dean - Phoenix AZ, US
Curtis D. Moyer - Phoenix AZ, US

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

H01J009/44

US Classification:

445 6, 445 50

Abstract:

A field emission source comprising a first conductive region, a layer of nanotubes deposited on the first conductive region, and a second conductive region placed over and spaced from the nanotube coated first conductive region. After the device structure is fabricated, a laser beam is used to dislodge one end of the nanotube from the first conductive surface and an electric field is simultaneously applied to point the freed end of the nanotube at the second conductive region.

US Patent:

6891319, May 10, 2005

Filed:

Aug 29, 2001

Appl. No.:

09/942451

Inventors:

Kenneth Andrew Dean - Phoenix AZ, US
Bernard F. Coll - Fountain Hills AZ, US
Albert Alec Talin - Scottsdale AZ, US
Paul A. Von Allmen - Mesa AZ, US
Yi Wei - Chandler AZ, US
Adam Madison Rawlett - Chandler AZ, US
Matthew Stainer - Goleta CA, US

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

H01J001/02
H01J001/16
H01J019/10

US Classification:

313309, 313336, 313351, 313346 R

Abstract:

A field emission device and method of forming a field emission device are provided in accordance with the present invention. The field emission device is comprised of a substrate () having a deformation temperature that is less than about six hundred and fifty degrees Celsius and a nano-supported catalyst () formed on the substrate () that has active catalytic particles that are less than about five hundred nanometers. The field emission device is also comprised of a nanotube () that is catalytically formed in situ on the nano-supported catalyst (), which has a diameter that is less than about twenty nanometers.

US Patent:

6902658, Jun 7, 2005

Filed:

Dec 18, 2001

Appl. No.:

10/024164

Inventors:

Albert Alec Talin - Scottsdale AZ, US
Kenneth Andrew Dean - Phoenix AZ, US
Shawn M. O'Rourke - Tempe AZ, US
Bernard F. Coll - Fountain Hills AZ, US
Matthew Stainer - Goleta CA, US
Ravichandran Subrahmanyan - Lake Oswego OR, US

Assignee:

Motorola, Inc. - Schaumburg IL

International Classification:

C25D013/12

US Classification:

204484, 204485, 204486, 204490, 204491

Abstract:

A method of fabricating a field emission device cathode using electrophoretic deposition of carbon nanotubes in which a separate step of depositing a binder material onto a substrate, is performed prior to carbon nanotube particle deposition. First, a binder layer is deposited on a substrate from a solution containing a binder material. The substrate having the binder material deposited thereon is then transferred into a carbon nanotube suspension bath allowing for coating of the carbon nanotube particles onto the substrate. Thermal processing of the coating transforms the binder layer properties which provides for the adhesion of the carbon nanotube particles to the binder material.