Multiplication register for amplifying signal charge

Details Multiplication register for amplifying signal charge Multiplication register for amplifying signal charge

H - Electricity

01

L

H01L 27/148 (2006.01)

Patent

CA 2563453

A multiplication register for use in solid state imaging apparatus, such as a CCD, is described. The multiplication register has a gain element (22) comprising a plurality of register electrodes (30, 32, 34, 36), for transferring charge along a change transfer channel (28), and for amplifying the charge. Channel edge defining electrodes (24, 26) are disposed either side of the channel (28), in place of channel stops, removing the effects of spurious charges generated in the channel in the regions of amplification. The provision of the channel edge defining electrodes (24, 26) allows the resulting structure of the channel electrodes to be made simpler, and means that a structure can be provided for clocking and amplifying charge in either direction along the channel.

Registre multiplicateur destiné à un dispositif imageur transistorisé tel qu'un dispositif à transfert de charge. Le registre multiplicateur comporte un élément de gain (22) comprenant une pluralité d'électrodes de registre (30, 32, 34, 36) pour le transfert de charge le long d'un canal (28) du même nom et pour l'amplification de la charge. Des électrodes délimitant des bords de canal (24, 26) sont disposées de part et d'autre du canal (28), en lieu et place de butées de canal, et éliminent les effets de charges parasites produites dans le canal dans les zones d'amplification. L'emploi desdites électrodes (24, 26) permet de simplifier la structure des électrodes de canal, cette structure pouvant par ailleurs assurer des fonction d'horloge et d'amplification de la charge dans les deux sens du canal.

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