Solid-state image pickup device

Details Solid-state image pickup device Solid-state image pickup device

1994-11-17

1996-07-02

Greening, Wendy R.

Television

Camera, system and detail

Solid-state image sensor

348362, H04N 5232

Patent

active

055327435

ABSTRACT:
An image pickup device capable of controlling the quantity of incident light. The device has a liquid crystal layer with upper and lower transparent electrodes disposed over a photosite. A fixed bias voltage is applied to the upper transparent electrode, while another voltage is applied to the lower transparent layer. The photosite converts incident light into electrons, and then stores a signal charge produced by the conversion of the incident light. A variation in the stored signal charge varies the voltage applied to the lower transparent layer. Thus, the liquid crystal layer modulates the incident light in response to a variation of the signal charge quantity.

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patent: 4823191 (1989-04-01), Andoh et al.
patent: 4838652 (1989-06-01), Inaba et al.
patent: 4935820 (1990-06-01), Patel et al.
patent: 5101275 (1992-03-01), Wijnen
patent: 5280359 (1994-01-01), Mimura et al.

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