Cathode ray tube with arrangement for electron ray control
AssigneeKoninklijke Philips Electronics N.V.
InventorsHans-Helmut Bechtel, Wolfgang Busselt, Harald Glaeser
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Abstract
The invention describes a cathode ray tube in which the position of the electron beam (7, 8, 9) is determined in that detection strips (12, 13) are arranged between or below the individual phosphor strips of the phosphor layer (11). The detection strips (12, 13) each comprise a semiconductor component which amplifies the measured current signal. This renders the position determination of the electron beam (7, 8, 9) more definite and reproducible.
Claims11
A cathode ray tube provided with a color picture screen (2), an electron gun (6) for the emission of at least one electron ray (7, 8, 9), and a deflection device (5), which color picture screen (2) comprises a front plate (10), a first set of detection strips and a second set of detection strips, a phosphor layer (11), a means for receiving signals generated by the detection strips, and a means for passing on correction signals to the deflection device (5), wherein the detection strips (12, 13) each comprise a semiconductor component.
Dependencies are inferred from the claim text.