Liquid crystal cells – elements and systems – Particular structure – Having significant detail of cell structure only
Patent
1994-12-22
1997-05-27
Sikes, William L.
Liquid crystal cells, elements and systems
Particular structure
Having significant detail of cell structure only
349 5, G02F 11335
Patent
active
056337370
ABSTRACT:
A liquid crystal display element, which is installed in a projection-type color liquid crystal display, is provided with the first glass substrate. The first glass substrate is provided with the first micro-lens array on its light-incident side and the second micro-lens array on its light-releasing side. The first micro-lens array converges light beams of respective primary colors onto the vicinity of the light-releasing position on the second micro-lens array. The second micro-lens array makes the incident light beams parallel to each other and releases them from the liquid crystal display element. Thus, even in the case of using a projection lens having a small diameter, it is possible to improve the efficiency of utilization of light. Moreover, this arrangement eliminates the necessity of having to employ a comparatively expensive projection lens with a large diameter, thereby reducing the costs of production.
REFERENCES:
patent: 4686519 (1987-08-01), Yoshida et al.
patent: 5052783 (1991-10-01), Hamada
patent: 5083854 (1992-01-01), Zampolin et al.
patent: 5161042 (1992-11-01), Hamada
"A New Bright Single Panel LC-Projection System Without a Mosaic Color Filter" by Messrs. Hamada, Nakanishi, Funada, and Awane; Liquid Crystal Labs, Sharp Corp.; Intl. Display Research Conf., Monterey, CA, Oct. 1994; pp. 422-423.
Hamada Hiroshi
Nakanishi Hiroshi
Shibatani Takashi
Tanaka Naoyuki
Miller Charles
Sharp Kabushiki Kaisha
Sikes William L.
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