Image display device with ion feedback control and method of ope

Details Image display device with ion feedback control and method of ope Image display device with ion feedback control and method of ope

1976-12-14

1979-08-14

Segal, R.

Electric lamp and discharge devices

Cathode ray tube

Secondary emissive electrode

315366, H01J 3100, H01J 4300

Patent

active

041646819

ABSTRACT:
A cathode device which employs regenerative ion feedback for sustained electron emission includes an enclosure filled with inert gas. A cathode, an electron multiplier region, and an ion interaction region are disposed in consecutive order within the enclosure with the interaction region being positioned at the output of the electron multiplier region. Means are provided for controlling the magnitude of ion feedback to the cathode whereby the feedback loop gain of the device can be caused to be either greater than, or less than, unity. The cathode device is useful in a cathodoluminescent cell which further includes an electron accelerating region and a cathodoluminescent screen. A plurality of these cathodoluminescent cells can be arranged so as to constitute an image display device. Disclosed also is a method of operating the cathode device and image display device.

REFERENCES:
patent: 3904923 (1975-09-01), Schwartz
patent: 4001620 (1977-01-01), Endriz
patent: 4051468 (1977-09-01), Rajchman

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