U.S. Philips Corporation

Theodoor C Hens

Johannes M Compen

Adrianus J Van Mensvoort

Johannes H Gijrath

Jean Winters

Maria C Van Uden

Thomas D Vrancken

A color display tube comprising a color selection structure which is provided with a layer of getter material, the surface on which the layer of getter material being provided is rough. In this manner heat radiation is increased and doming of the color selection structure is reduced.

Color display tube having color selection structure with rough surface

A color cathode ray tube comprises a color selection electrode which is secured to a frame and a magnetic screening cap. The frame has two diaphragm portions one of which is located near the color selection electrode and the other is further removed from the color selection electrode. The distance between the electron beams deflected towards the outermost apertures of the color selection electrode and the further removed diaphragm is at least 1 cm. By virtue thereof, the negative influence of the frame on the screening effect of the magnetic screening cap is substantially reduced.

Colour cathode ray tube having a screening cap

A color display tube is set forth comprising a color selection electrode which is suspended from supporting elements in the corners of the display window of the color display tube. The suspension elements used to suspend the color selection electrode from the supporting elements comprise a resilient element which encloses an angle .alpha. with the normal to the center of the display window. The angle .alpha. (in degrees) is defined by:

Color display tube having a suspension means for a color selection

A color electron beam display tube comprises a color selection electrode having a large plurality of apertures on a border, the border, having an interior portion which extends towards the display window and an exterior portion extending away from the display window, characterized in that substantially every point of the border is an element of an electron beam path.

Growing community of inventors

Eindhoven, Netherlands

Theodoor C Hens