Bbc Brown, Boveri & Company, Limited

Peter J Wild

Allan R Kmetz

Ole Snedkerud

Jurg Fingerle

Marco Donati

Jorg Wullschleger

Ruurd De Fluiter

Peter U Schulthess

Walter Boller

Erwin Buchel

A device for the electro-optical display of the tuning of an electromagnetic wave receiver, such as a television or a radio, wherein the frequency of a received electromagnetic signal is measured and converted into a digital representation, which is applied to the input of a memory as the address of the various preprogrammed names of selected transmitting stations. The output of the memory is applied to select appropriate display elements of an electro-optical display and the selected display elements are then excited to provide a display indicative of the name or call letters of the transmitter station corresponding to the tuned receiver signal.

Device for the electro-optical display of the tuning of a television

An improved liquid crystal display having two glass plates separated by a cell sealing bar. Bridge contacts are provided between selected exterior electrode contacts on one of the glass plates and the common electrode of the second glass plate. These bridge contacts are made by employing a cell sealing bar with a predetermined controlled conductivity, thereby integrating the bridge contact into the display structure.

Liquid crystal display having integrated bridge contacts

A method for the production marking of liquid crystal displays whereby the closure bar of the liquid crystal cell is produced and encoded by a screen printing process. Several coding techniques which minimize production interruptions are also disclosed.

Method for the production marking of liquid displays

An illuminating arrangement for a field-effect liquid-crystal display having a transparent plate disposed on the side of the liquid-crystal display away from the observer in which there is a recess formed in a thickened side portion thereof for receiving a light source and wherein the surface of the plate, at least on the side thereof away from the liquid-crystal display, is smooth and the surface next to the liquid-crystal display is provided with a continuous reflecting film of low transparency. Preferably, a reflector also is mounted on the surface of the plate facing away from the liquid-crystal display.

Illuminating arrangement for a field-effect liquid-crystal display as

An electro-optical display device and a method of manufacturing it are disclosed. The display device includes a liquid crystal cell arranged between two polarizers. A light source is positioned adjacent one polarizer on the side thereof remote from the liquid crystal cell, and an electronic control device is coupled to the liquid crystal cell. A diaphragm is arranged on one side of the liquid crystal cell in the form of an aperture for limiting the display field of the liquid crystal. The device limits viewing parallax and improves contrast for both day and night viewing.

Electro-optical display device using a liquid crystal cell

In a driving circuit for a liquid crystal display matrix, a source of a direct or low-frequency voltage is connected to drive the selected row and column electrodes, and a high frequency voltage is connected to the driving circuit so that the high frequency potential is effective in combination with the low frequency or direct voltage at non-frequency voltage is effective at the selected crossovers. The high frequency voltage suppresses changes in the optical properties of the liquid crystal at the non-selected crossovers.

Driving circuit for a matrix-addressed liquid crystal display device

An improved liquid-crystal display exhibiting both a relatively bright background and good contrast between the background and displayed characters is disclosed. The display includes a liquid-crystal contained between a pair of support plates carrying transparent electrodes. First and second polarizers of differing characteristics are positioned on opposite sides of the liquid-crystal and a suitable reflector is combined with one of the polarizers.

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Wettingen, Switzerland

Peter J Wild