Liquid crystal display having a double-refracting compensation layer
AssigneeOPTREX EUROPE GmbH
InventorsWerner Fertig, Jurgen Wahl, Thomas Ott
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Abstract
A liquid-crystal display has a liquid-crystal cell (1) which is formed of two substrates (2) spaced apart from each other, and is filled with a nematic liquid-crystal substance (4). On the cell inner-space side, electrode layers (3) which can be acted on by voltage are arranged on the substrates (2). On the cell outside space side, a double-refracting compensation layer extends over the cell surface. Liquid-crystal cell (1) and compensation layer are arranged between two polarization filters (11). The compensation layer is developed over its surface with a plurality of regions adjacent to each other. The amount of the double refraction of the regions differs from each other by a small amount.
Claims19
A liquid-crystal display comprising
- a controllable liquid crystal cell;
- wherein the controllable liquid-crystal cell comprises two substrates arranged spaced apart from each other and being filled with a liquid-crystal substance;
- the cell further comprises electrode layers which can be acted on by voltage and are arranged on the substrates within the cell;
- the liquid crystal display further comprises a compensation layer arranged outside the cell and extending over a surface of the cell, the compensation layer being a double-refracting compensation layer;
- the display further comprises a polarization filter assembly having at least one filter, the filter assembly providing a filter in front of the liquid crystal cell and the compensation layer or behind the liquid crystal cell and the compensation layer or on opposite sides of the liquid-crystal cell and the compensation layer;
- and
- the compensation layer comprises a plurality of adjacent regions providing double refraction to light rays passing therethrough, the amount of the double refraction of neighboring regions differing by a small amount from each other.
Dependencies are inferred from the claim text.