Colour display tube with improved suspension of the colour selection electrode

A color display tube (1) is disclosed with an improved suspension system of the color selection electrode (12). The color display tube has suspension means that have a self-locking construction. The suspension means (20) are provided with an additional flat portion (31). This plate has an aperture (32) that is shaped such that it has at least three surfaces of engagement (42, 43) for the free end portion (22) of the supporting elements (17) which are connected to the inside of the upright edge (18) of the display window (3). When the color display tube is exposed to a shock the construction of the flat portion (31) is capable of absorbing this shock without the color selection electrode (12) coming down from the supporting elements (17). The action is based on the friction between the surfaces of engagement (42) and the free end portion (22). When a force is applied in the plane (47) of the resilient element (30), the suspension means (20) slip off from their rest position and are locked by a surface of engagement (48), the preload caused by the resilient element (30) and the spring (40) will reposition the suspension means (20) to its original position. A color display tube (1) results with good positional stability of the color selection electrode (12). Further, the color selection electrode (12) can be reclaimed in case the color display tube (1) is rejected because there is no need to weld the suspension means (20) to the free end portions (22) anymore.