Charge storage device having shared conductors

Details Charge storage device having shared conductors Charge storage device having shared conductors

1995-03-03

1996-10-29

Westin, Edward P.

Radiant energy

Photocells; circuits and apparatus

Photocell controlled circuit

358483, 348311, H01L 2700

Patent

active

055699081

ABSTRACT:
The storage elements (3) of an array (2) are arranged in rows and columns with the storage elements (3) in a column being coupled to a first conductor (4) and the storage elements (3) in a row being coupled to a second (5) and to a third (6) conductor. Each storage element (3) in a row is coupled to the associated second conductor (5) by a first rectifying element (D1) and to the associated third conductor (6) by a second rectifying element (D2) with the first and second rectifying elements (D1 and D2) allowing the passage of current when forward-biased by applied voltages. The third conductors (6) also form the second conductors (5) of any adjacent rows. The first and second rectifying elements (D1' and D2') of alternate rows (N, N+2, N+4, . . . ) are oppositely oriented to those (D1" and D2") in the remaining rows (N+1, N+3, . . . ). An arrangement (7) is provided for applying voltages to the second and third conductors (5 and 6) for enabling only the first and second rectifying elements (D1 and D2) associated with a selected row of storage elements (3) to be forward-biased to allow charge stored at the storage elements of the selected row to be read. This allows the problems of incomplete recharging of storage elements (3) to be reduced without having to increase the overall number of conductors.

REFERENCES:
patent: 4541015 (1985-09-01), Itoh et al.
patent: 4565928 (1986-01-01), Yamamoto et al
patent: 4948966 (1990-08-01), Arques et al.
patent: 5376782 (1994-12-01), Ikeda et al.
patent: 5410349 (1995-04-01), Tanigawa et al.
patent: 5426292 (1995-06-01), Bird et al.

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