Liquid crystal cells – elements and systems – Particular structure – Particular illumination
Patent
1998-06-25
2000-10-31
Sikes, William L.
Liquid crystal cells, elements and systems
Particular structure
Particular illumination
349 74, 349 77, 349 83, 349 58, G02F 11335, G02F 11397, G02F 11333
Patent
active
061410675
ABSTRACT:
The visual display device of the present invention comprises a masking, a liquid crystal cell (LCD) and an illuminating light, in which display contents are not lost even when an decoration is provided in the portion being superposed on a display information, the decoration can be effected without blocking the illuminating light, and an decorating image are exchangeable so that a variety of contents of the decorating image can be cope with. As for its constitution, there are disposed, in the following order when viewed from the outside, a screen 1 (the masking plate), an LCD 2, an illuminating (light beam guiding) plate 3, an (decorating) image information plate 5 and a reflecting plate 6; the light beam guiding plate 3 is not of self-luminous element but guides a light beam from the side thereof to refract it; and the image information plate 5 is made exchangeable. From this, when the visual display unit is viewed from the outside, the image information plate 5 is positioned behind the LCD 2 and hence the image information never covers nor loses any information contents. Also, there is no blockage between the light beam guiding means and the LCD 2, and so the illumination is conducted over all of the display contents. Further, by using the exchangeable image information plate 5, the decoration with a variety of contents may be provided.
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patent: 5870156 (1999-02-01), Hemmbrock
NEC Corporation
Sikes William L.
Ton Toan
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