U.S. Philips Corporation

Wilhelmus Nm Selten

Hermanus N Tuin

Franciscus M Van Laarhoven

Marcel Niestadt

Cornelus Hm Van Bommel

Johannes Th Leijten

Johannes Hm Damen

Martinus Gfc Sanders

The thin-type display device (1) has a transparent front wall (3), which is provided with a display screen, and a rear wall (24) which extends parallel to said front wall (3), and said display device comprises at least an electron source and a duct structure. The display device (1) is characterized in that the rear wall (24) and walls (22, 22', 22') of the ducts of the duct structure are manufactured in a single piece. Preferably, the walls (22, 22', 22') of the ducts widen in the direction of the rear wall (24), with the angle, which opposing faces of the walls (22, 22', 22') of the ducts make with each other, ranging from 1.degree. to 30.degree.. Preferably, the rear wall (24) further comprises at least an upright side wall (32), which is integral with the rear wall (24). Preferably, the walls (22, 22', 22') are made from a glass having a temperature interval between the operating temperature and the softening temperature of less than 420.degree., perferably less than 360.degree., and the duct structure and the side walls (32) can be pressed in one process step.

Thin-type display device with one-piece rear wall

A picture tube and lens system are combined to form a picture display device for use in a projection device. The lens system is mounted in an extension of the tube envelope.

Picture display device, projection device provided with three such

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Eindhoven, Netherlands

Wilhelmus Nm Selten