International Standard Electric Corporation

Standard Electrik Lorenz Ag

Klaus-Peter Voigt

Kurt M Tischer

Rolf Zondler

Michael Schlipf

Fritz Troster

During silk-screen printing, the stencil (3) is stretched as a result of the pressure exerted by the squeeges (6) This results in a distorted pattern on the material (4) to be printed. To eliminate this error, the design (7') in the stencil (3) is predistorted in such a way that a distortion-free printed pattern (8') is obtained.

Silk-screen printing method using predistorted second screen

In the manufacture of display structures--including fluorescent material displays--by means of a print process, a base material (glass or plastic material), prior to the print process, is coated with an electrically conductive layer. During the print process, a strippable coating or pigmented lacquer having the shape of the structure, is deposited onto a first layer. After the print process, the non-printed electrically conductive layer is etched away and in the case of the non-fluorescent display structure, the strippable coating is peeled off the electrically conductive layer. The invention provides an improvement in the manufacture of display structures over the hitherto conventional photographic reproduction of silk-screen printing methods, and provides display structures having sharp edges to a thickness of approximately 10 .mu.m.

Method of manufacturing display structures

A rear plate of a liquid-cell display device has louvers embedded therein that allow light to pass from the rear of the display device toward the front only at angles that will cause most or all of the light to be internally reflected at the front plate unless the light has been scattered by the light-scattering fluid of the device.

Growing community of inventors

Esslingen, Germany

Klaus-Peter Voigt