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Title:
ELECTRON SOURCE, IMAGE FORMING METHOD USING THE ELECTRON SOURCE, AND DEVICE THEREFOR
Document Type and Number:
Japanese Patent JPH08190853
Kind Code:
A
Abstract:

PURPOSE: To provide an image with stable gradation by deflecting a modulated and driven electron beam according to an input signal, and forming a visual image on the basis of the deflected electron beam.

CONSTITUTION: A vertical deflection signal generator 1609 has n-sets of switching elements Sr1-Srn. These switching elements are switched synchronously with a signal Tr1 generated by a deflection signal control circuit 1608. Namely, when a scanning circuit 1602 turns ON a switch Si, the vertical deflection signal generator 1609 turns ON the switch Sri. On the other hand, a line memory 1605 stores the contents of parallel signals IG1-IGn outputted from a shift register 1604 according to the signal TMRY from a driving signal control circuit 1603. The thus-stored contents are inputted to a modulation signal generating circuit 1607 as I'G1-I'Gn. The circuit 1607 applies the voltage for increasing and decreasing the electron to be emitted from a surface conductive type electron emitting element according to the input data I'G1-I'Gn. to outputs Dy1-Dyn to make the phosphor of a display panel 1601 luminescent.


Inventors:
Ando, Yoichi
Suzuki, Hidetoshi
Application Number:
JP1995000003119
Publication Date:
July 23, 1996
Filing Date:
January 12, 1995
Export Citation:
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Assignee:
CANON INC
International Classes:
H01J3/08; G09G3/20; G09G3/22; H01J1/30; H01J1/316; H01J3/30; H01J29/52; H01J29/72; H01J29/74; H01J31/12; (IPC1-7): H01J1/30; G09G3/20; H01J29/52; H01J29/72; H01J31/12
Attorney, Agent or Firm:
大塚 康徳 (外1名)