Electron gun with a multi-media monitor

Details Electron gun with a multi-media monitor Electron gun with a multi-media monitor

2007-01-23

2007-01-23

Eisen, Alexander (Department: 2629)

Computer graphics processing and selective visual display system

Display driving control circuitry

Display power source

C315S014000, C313S382000

Reexamination Certificate

active

10330339

ABSTRACT:
An electron gun used with a multi-media monitor with a low cathode voltage and improved focusing performance. The electron gun, which includes a cathode, a control electrode, a screen electrode, and a plurality of focusing electrodes to focus and accelerate an electron beam, is designed to satisfy the condition that a value of β is greater than or equal to 0.222 or a value of k is greater than or equal to 0.11, where β=T1/D, k=T1/L, T1 denotes a thickness of the control electrode, D denotes a diameter of an electron beam aperture of the control electrode, and L denotes the distance between a beam-entering surface of the control electrode and a beam-emitting surface of the screen electrode.

REFERENCES:
patent: 2971118 (1961-02-01), Burdick
patent: 5180945 (1993-01-01), Kweon
patent: 5397959 (1995-03-01), Takahashi et al.
patent: 6507143 (2003-01-01), Wakita et al.
patent: 596443 (1994-05-01), None
patent: 55019729 (1980-02-01), None
patent: 11-224618 (1999-08-01), None
patent: 1999-8925 (1999-03-01), None
patent: 1999-33989 (1999-08-01), None
Translation of Japanese application JP11-224618.

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