Transparent-scattering display device

Details Transparent-scattering display device Transparent-scattering display device

1994-09-08

1996-12-03

Gross, Anita Pellman

Liquid crystal cells, elements and systems

Particular structure

Particular illumination

349 86, 349 49, 349110, 349113, 349138, 349162, G02F 11333, G02F 11335

Patent

active

055813801

ABSTRACT:
A display device (1) has a display panel (2) which comprises a first substrate (6) on which a first picture electrode (11-27) is provided as well as a substantially parallel second substrate (7) on which a second picture electrode (20) is provided, both substrates (6, 7) sandwiching an electro-optical medium (8). Said electro-optical medium (8) is capable of switching between an at least substantially transparent state and a scattering state under the influence of an electric field. A transparent insulating layer (10) is provided between the first picture electrode (11-17) and the electro-optical medium (8), said insulating layer reflecting the light (30) which, at least during operation, is emitted by a light source (3) and sidelong captured by the panel (2), so that it does not reach the first picture electrode (11-17).

REFERENCES:
patent: 4626074 (1986-12-01), Crossland et al.
patent: 4668049 (1987-05-01), Canter et al.
patent: 4989956 (1991-02-01), Wu et al.
patent: 5099343 (1992-03-01), Margerum et al.

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