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AssigneeU.S. Philips Corporation
InventorsJohannes H. N. Gijrath, Albertus A. M. Van Liempd, Hendrik S. A. Versteegen, Josephus J. Van Der Geer, Henricus J. M. Van Der Avoort
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A color selection electrode (7) is suspended in the corners of the upright edge (3) of the display window (2) by means of strip-shaped resilient elements (25) which extend substantially perpendicularly to the electron beams deflected towards the respective corner of the display window. The resilient elements (25), at their ends remote from the color selection electrode (7), comprise a peg (27) the axis of which extends substantially parallel to the direction of the electron beams directed towards the respective corner. In the corner of the upright edge (3) of the display window (2) a supporting element (30) is connected which comprises a portion (32) which is provided with an aperture (33), which portion (32) extends substantially perpendicularly to the axis of the peg (27). The pegs (27) fall partly through the apertures (33). A screening cap for screening the electron beams from the earth's magnetic field in the sleeve is connected to the supporting element (30) thus exerting no pressure on the resilient elements (25).
A colour display tube comprising an envelope having a substantially rectangular display window provided with an upright edge and a substantially rectangular colour selection electrode having a large number of apertures, which electrode is suspended in the corners of the display window by means of a strip-shaped resilient element connected to each corner of the colour selection electrode, which resilient element is substantially perpendicular to the direction of an electron beam deflected toward the respective corner of the display window, said resilient element comprising a peg at its end remote from the colour selection electrode, characterized in that the axis of the peg extends substantially parallel to the direction of the electron beam directed toward the respective corner, said peg comprising a conical portion, and further characterized in that a supporting element is connected in the corner of the upright edge of the display window, said supporting element comprising a portion extending perpendicularly to the axis of the peg, said portion having an aperture through which the conical portion of the peg projects.
Dependencies are inferred from the claim text.