Color cathode ray tube display system

Details Color cathode ray tube display system Color cathode ray tube display system

1996-10-17

1998-03-10

Issing, Gregory C.

Electric lamp and discharge devices: systems

Cathode ray tube circuits

Cathode-ray deflections circuits

315 15, 315 16, G09G 104, H01J 2946

Patent

active

057265399

ABSTRACT:
The display system comprises a colour cathode ray tube. The colour cathode ray tube comprises an in-line electron gun with a distributed main lens (DML). The final electrode (anode) of the DML generates a quadrupole lens field. To a first electrode a static voltage V.sub.foc is applied. Between a second electrode, on which a dynamic voltage V.sub.dyn is applied, and a first intermediate electrode a quadrupole electric field is generated. The value of the dynamic voltage is lower than the static voltage.

REFERENCES:
patent: 4771216 (1988-09-01), Blacker et al.
patent: 5539278 (1996-07-01), Takahashi
SID Digest 1995, part 9.3 "A new dynamic Focus electron gun for Color CRTs with tri-quadrupole electron lens" by s. Sugawara et al.

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