U.S. Philips Corporation

Josephus J Van Der Geer

Johannes H Gijrath

Henricus J Van Der Avoort

Hendrik S Versteegen

Albertus A Van Liempd

Gerardus H Van Der Steen

Marinus Ploeger

Willem Van Pelt

Wilhelmus J Spoor

A color selection electrode (7) is suspended from the corners of the upright edge (3) of a display window (2) by means of resilient elements (25) which extend substantially perpendicularly to the electron beams deflected towards the corners. The resilient elements (25) have apertures (28) with which the resilient elements (25) are placed on mandrils (31). The mandrils (31) are embedded in the corners of the upright edge (3) of the display window (2) perpendicularly to the planes of the resilient elements (25). A screening cap for screening the electron beams from the earth's magnetic field is connected on the mandrils (31) in such manner that the screening cap exerts no pressure on the resilient elements (25).

Color display tube and suspension means for color selection electrode

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).

Color tube shadow mask mount

Glass compositions which are suitable for making face-plates of cathode-ray tubes used for displaying television pictures, particularly for displaying color television pictures. A problem in formulating such glasses is to obtain glasses which can be worked satisfactorily and which do not discolor significantly as a result of electron bombardment and X-ray irradiation. The glass compositions consist of the following constituents in the following quantities (expressed in % by weight):

Cathode-ray tube face-plate

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Eindhoven, Netherlands

Josephus J Van Der Geer