公开(公告)号：US2555906A

公开(公告)日：1951-06-05

申请号：US68370846

申请日：1946-07-15

Applicant: HARTFORD NAT BANK & TRUST CO

Inventor： LOON CAREL JAN VAN ,  HUBERTUS TELLEGEN BERNARDUS DO

IPC: H01J19/82 ,  H01J25/10 ,  H01J25/12 ,  H01J43/02 ,  H03D7/00 ,  H03D7/10 ,  H03F1/08 ,  H03F1/28 ,  H03F1/36 ,  H03F3/52 ,  H03G3/22 ,  H03G5/06 ,  H03J3/06 ,  H04B15/06

CPC classification number: H01J25/10 ,  H01J19/82 ,  H01J25/12 ,  H01J43/025 ,  H03D7/00 ,  H03D7/10 ,  H03F1/08 ,  H03F1/28 ,  H03F1/36 ,  H03F3/52 ,  H03G3/22 ,  H03G5/06 ,  H03J3/06 ,  H04B15/06

公开(公告)号：US2511122A

公开(公告)日：1950-06-13

申请号：US59916745

申请日：1945-06-13

Applicant: BELL TELEPHONE LABOR INC

Inventor： NEWBY NEAL D

IPC: H01J19/82 ,  H03F3/36

CPC classification number: H03F3/36 ,  H01J19/82

公开(公告)号：US2337933A

公开(公告)日：1943-12-28

申请号：US48298543

申请日：1943-04-14

Applicant: GEN ELECTRIC

Inventor： ROGERS GEORGE L

IPC: G05F1/42 ,  H01J19/82

CPC classification number: G05F1/42 ,  H01J19/82

公开(公告)号：US2337932A

公开(公告)日：1943-12-28

申请号：US41735241

申请日：1941-10-31

Applicant: GEN ELECTRIC

Inventor： ROGERS GEORGE L

IPC: H01J19/82

CPC classification number: H01J19/82

公开(公告)号：US2239677A

公开(公告)日：1941-04-29

申请号：US20959538

申请日：1938-05-23

Applicant: GUNTHER JOBST

Inventor： GUNTHER JOBST

IPC: H01J19/82 ,  H01J25/12 ,  H02M9/06 ,  H03K3/78

CPC classification number: H03K3/78 ,  H01J19/82 ,  H01J25/12

公开(公告)号：US2227599A

公开(公告)日：1941-01-07

申请号：US23490438

申请日：1938-10-14

Applicant: THOMAS MCNANEY JOSEPH

Inventor： THOMAS MCNANEY JOSEPH

IPC: G01R19/22 ,  H01J1/20 ,  H01J19/82

CPC classification number: G01R19/225 ,  H01J1/20 ,  H01J19/82

公开(公告)号：US1857645A

公开(公告)日：1932-05-10

申请号：US17451127

申请日：1927-03-11

Applicant: ARCTURUS RADIO TUBE CO

Inventor： LOUIS KRAHL WALTER

IPC: H01J19/82

CPC classification number: H01J19/82

公开(公告)号：US1768660A

公开(公告)日：1930-07-01

申请号：US26908918

申请日：1918-12-31

Applicant: WESTINGHOUSE ELECTRIC & MFG CO

Inventor： BRACKETT QUINCY A

IPC: H01J19/82

CPC classification number: H01J19/82

公开(公告)号：US09984846B2

公开(公告)日：2018-05-29

申请号：US15217158

申请日：2016-07-22

Applicant: KLA-Tencor Corporation

Inventor： William G. Schultz ,  Gildardo R. Delgado ,  Frances Hill ,  Edgardo Garcia Berrios ,  Rudy Garcia

IPC: H01J1/34 ,  H01J1/304 ,  H01J9/02 ,  H01J19/24

CPC classification number: H01J1/3044 ,  H01J1/34 ,  H01J9/025 ,  H01J19/24 ,  H01J19/82 ,  H01J2201/30411 ,  H01J2201/30449 ,  H01J2201/30492 ,  H01J2209/0223

Abstract: An emitter containing a metal boride material has an at least partly rounded tip with a radius of 1 μm or less. An electric field can be applied to the emitter and an electron beam is generated from the emitter. To form the emitter, material is removed from a single crystal rod to form an emitter containing a metal boride material having a rounded tip with a radius of 1 μm or less.

公开(公告)号：US20180005792A1

公开(公告)日：2018-01-04

申请号：US15392539

申请日：2016-12-28

Applicant: STMICROELECTRONICS S.R.L.

Inventor： Antonino Fiumara ,  Marcello Frazzica ,  Giuseppe Digrazia

IPC: H01J19/24 ,  H01J9/02 ,  H01J19/44

CPC classification number: H01J19/24 ,  H01J9/025 ,  H01J19/44 ,  H01J19/82 ,  H01J21/105 ,  H01J2209/0223

Abstract: A method for manufacturing a microelectronic semiconductor device comprising the steps of: forming a trench in a body, the trench having side walls, a opening, and a bottom; forming a sacrificial layer in the trench; forming a recess in the sacrificial layer; forming a restriction structure between the sacrificial layer and the opening of the trench, defining a through hole for access to the sacrificial layer; completely removing the sacrificial layer through said through hole; and depositing a metal layer over the body, thus closing the opening of the trench and forming an electron-emission cathode tip.