U.S. Philips Corporation

Petrus J Peters

Arthur M Hoeberechts

Jacobus Stoffels

Yang Yang

Johannes M Van Esdonk

Gerardus N Van Veen

Remko Horne

Jeroen J Vleggaar

Marcus G Van Munster

Adrianus Ambosius Bluekens

Henricus A Crooijmans

An organic electroluminescent device includes an electroluminescent element, which is enclosed in a housing. The deterioration in uniformity of the luminous surface, which occurs when an electroluminescent device is stored or operated under ambient conditions, and which deterioration manifests itself, for example, in the form of 'dark spots', can be overcome to a substantial degree in accordance with the invention by using an airtight and waterproof housing which is sealed by a low-melting metal, such as a BiSn alloy.

Organic electroluminescent device with housing

A picture display device having an evacuated envelope (1) comprises a first wall (2) which is provided with a display screen (3), and a second wall (5), and is provided with an internal vacuum support (11) between the two walls (2, 5). The internal vacuum support (11) comprises a dielectric plate at least at the side facing the first wall (2), which plate is arranged opposite the display screen (3) and is provided with cavities (12) at the location of the pixels (4R, 4B, 4G) of the display screen (3). The internal vacuum support (11) accommodates cavities (12) which constitute a lateral system of ducts. The continuous exhaust path of the internal vacuum support (11) communicates via the exhaust cavity (25) with an exhaust connection (9).

Picture display device provided with an internal vacuum support

A display device having a row of emitting elements and an electron-optical system for the electron beams emitted by the said elements. The electron-optical system includes bodies to which common row electrodes are secured so that the assembly of the electron-optical system is simplified. The electrodes may be provided either as separate elements fitting into slots in the body walls, or as layers on the walls, formed for example by vacuum evaporation.

Display device having walls for passage of electron beams

The invention relates to the combination of a support and a semiconductor body and to a method of manufacturing same, in which a deformable metal layer is disposed between the semiconductor body and the support. The semiconductor body is connected to the support by pressing the semiconductor body and the support against each other under pressure after heating the metal layer. The semiconductor body is then provided at its surface facing the support with at least one projecting part, which is embedded in the metal layer.

Combination of a support and a semiconductor body and method of

The invention relates to a method of providing a semiconductor body on a support with the interposition of a metal layer of aluminum. The adherence is effected in that the semiconductor body and the support are pressed against each other during the supply of heat at the area of the metal layer. The metal layer of aluminum is first applied to the support by flame spraying.

Method of providing a semiconductor body on a support

By using micro-connection techniques, for example by means of ceramic glass and conducting glass, an electron-optical system can be manufactured with which the emitted beam can be deflected through 90.degree. within a very short distance (of the order of several mm).

Vacuum tube including an electron-optical system

A contact for a semiconductor cathode is produced by thermally bonding leads consisting of one of the metals Ag, Au, Cu and one of the metals Ta, Ti, V. Such a contact does not exhibit degradation when the cathode, after mounting in a vacuum tube, is heated several times to approximately 850.degree. C. for cleaning purposes.

Method of providing electrical contact to a semiconductor cathode,

A beam splitting prism assembly in which at least some of the prisms are separated by an air gap, optionally connected at the edges through the beam splitting layers by means of strips of a thermo-plastic material.

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Eindhoven, Netherlands

Petrus J Peters