Electrical contacts for polymer dispersed liquid crystal films

Details Electrical contacts for polymer dispersed liquid crystal films Electrical contacts for polymer dispersed liquid crystal films

1991-03-08

1992-08-25

Miller, Stanley D.

Optical: systems and elements

Holographic system or element

Using a hologram as an optical element

359 51, G02F 11343, G02F 113

Patent

active

051426447

ABSTRACT:
An electrical contact for use with an optically responsive, polymer dispersed liquid crystal film is provided. The preferred electrical contact means consists of a pair of U-shaped, electrically conductive spring connectors. Each of these spring connectors is rigidly biased against corresponding transparent electrodes provided on each of the surrounding transparent substrates, so as to provide a compressive clamping force against the electrode. This ensures an intimate and complete electrical connection between each spring connector and each transparent electrode. The spring connector may be formed from any electrically conductive material which is sufficiently strong yet yielding and which is sufficiently anodic with respect to the electrode material, a preferred material being a suitable beryllium copper alloy when the electrodes are formed from a material such as indium-tin oxide. The preferred spring connector also provides redundant electrical contact between each electrode and itself, therefore, enabling its use in large area devices, such as window panels, wherein it is imperative that failure at a single point of electrical contact does not result in failure of the electrical connection.

REFERENCES:
patent: 4516836 (1985-05-01), Ferrato
patent: 4586789 (1986-05-01), Kishimoto et al.
patent: 4688900 (1987-08-01), Doane et al.
patent: 5032006 (1991-07-01), Grupp et al.
Catalogue Illustration from Instruments Specialties Company, Inc., Delaware Water Cap, PA.

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