公开(公告)号：DE69935343D1

公开(公告)日：2007-04-12

申请号：DE69935343

申请日：1999-07-08

Applicant: CANDESCENT TECH CORP

Inventor： ELLOWAY DONALD J ,  MORRIS DAVID L ,  SCANNELL WILLIAM J ,  SPINDT CHRISTOPHER J

IPC: G09G3/10 ,  G09G3/22 ,  H01J9/44 ,  H01J29/04 ,  H01J31/12

Abstract: A method of removing contaminant particles in newly fabricated filed emission displays. Contaminant particles are removed by a conditioning process which includes the steps of: a)driving an anode (20) of a field emission display (FED) to a predetermined voltage; b) slowly increasing an emission current of the FED after the anode has reached the predetermined voltage; and c) providing an ion-trapping device for catching the ions and particles knocked off, or otherwise released, by emitted electrons (40). By driving the anode to the predetermined voltage and by slowly increasing the emission current of the FED, contaminant particles are effectively removed without damaging the FED. A method of operating FEDs is also provided to prevent gate-to-emitter current during turn-on and turn-off, which comprises the steps of: a) enabling the anode display screen (20); and b) enabling the electron-emitters (40) after the anode display screen is enabled. By allowing sufficient time for the anode display screen to reach a predetermined voltage before the emitter is enabled, the emitted electrons (40) will be attracted to the anode (20).

公开(公告)号：EP1116202A4

公开(公告)日：2003-07-09

申请号：EP99943611

申请日：1999-07-08

Applicant: CANDESCENT TECH CORP

Inventor： ELLOWAY DONALD J ,  MORRIS DAVID L ,  SCANNELL WILLIAM J ,  SPINDT CHRISTOPHER J

IPC: G09G3/22 ,  H01J9/44 ,  H01J29/04 ,  H01J31/12 ,  G09G3/10

CPC classification number: G09G3/22 ,  G09G2310/06 ,  G09G2310/066 ,  G09G2330/02 ,  H01J9/39 ,  H01J9/44 ,  H01J31/127 ,  H01J2209/0223

Abstract: A method of removing contaminant particles in newly fabricated filed emission displays. Contaminant particles are removed by a conditioning process which includes the steps of: a) driving an anode (20) of a field emission display (FED) to a predetermined voltage; b) slowly increasing an emission current of the FED after the anode has reached the predetermined voltage; and c) providing an ion-trapping device for catching the ions and particles knocked off, or otherwise released, by emitted electrons (40). By driving the anode to the predetermined voltage and by slowly increasing the emission current of the FED, contaminant particles are effectively removed without damaging the FED. A method of operating FEDs is also provided to prevent gate-to-emitter current during turn-on and turn-off, which comprises the steps of: a) enabling the anode display screen (20); and b) enabling the electron-emitters (40) after the anode display screen is enabled. By allowing sufficient time for the anode display screen to reach a predetermined voltage before the emitter is enabled, the emitted electrons (40) will be attracted to the anode (20).