CCD imager with integrated voltage divider resistors to supply o

Details CCD imager with integrated voltage divider resistors to supply o CCD imager with integrated voltage divider resistors to supply o

1991-12-26

1992-10-27

Munson, Gene M.

357 51, 357 59, H01L 2978, H01L 2702, H01L 2904

Patent

active

051594188

ABSTRACT:
A CCD type solid state imaging device is disclosed, in which the overflow drain voltage is generated within the device itself by dividing the drain voltage by a built-in divider. The divider is constituted by first and second resistive layers. The first resistive layer interconnects an input terminal and an overflow drain voltage supply. The second resistive layer interconnects the overflow drain voltage supply and a grounded region formed in the semiconductor substrate. Both or one of the first and second resistive layers are formed by a laser trimming technique for adjustment of the resistance ratio of the first resistive layer to said second resistive layer. As a result, the need for such troublesome voltage adjusting operation as may be otherwise required in the process of manufacturing video cameras or the like is eliminated.

REFERENCES:
patent: 4178519 (1979-11-01), Engeler et al.
patent: 4212025 (1980-07-01), Hirasawa et al.
patent: 4225877 (1980-09-01), Miles et al.
patent: 4373167 (1983-02-01), Yamada
patent: 4654865 (1987-03-01), Sunasuka et al.
patent: 5065221 (1991-11-01), Imamura

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