Picture display device of the index type
AssigneeKoninklijke Philips Electronics N.V.
InventorsPieter Johannes Engelaar, Petrus Johannes Gerardus Van Lieshout
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Abstract
Picture display device comprising a cathode ray tube whose display screen (10) is provided with index electrodes (20, 21) comprising elongated conducting elements disposed substantially parallel to an axis of symmetry (50) of the display screen (10). In operation, the magnetic field of the deflection system of the cathode ray tube induces unwanted crosstalk on said index electrodes (20, 21). By cross-connecting one end (30a) of a conducting element (31) of an index electrode (20) to the opposite side end (40a) of another conducting element (41) of said index electrode (20), said crosstalk on said index electrode (20) is reduced.
Claims8
A picture display device comprising a cathode ray tube (1) having a display window (2) with a display screen (10), said display screen (10) being provided with at least two index electrodes (20, 21), each index electrode comprising a plurality of conducting elements extending substantially parallel to an axis of symmetry (50) of the display screen (10), characterized in that at least one index electrode (20) comprises at least one conducting element (31), one side end (30a) of which is connected by means of a cross-connection (60) to an opposite side end (40a) of another conducting element (41) of said at least one index electrode (20).
A display window (2) for a cathode ray tube (1) comprising a display screen (10) provided with at least two index electrodes (20, 21), each index electrode comprising a plurality of conducting elements extending substantially parallel to an axis of symmetry (50) of the display screen (10), characterized in that at least one index electrode (20) comprises at least one conducting element (31), one side end (30a) of which is connected by means of a cross-connection (60) to an opposite side end (40a) of another conducting element (41) of said at least one index electrode (20).
Dependencies are inferred from the claim text.