Imec Vzw

Katholieke Universiteit Leuven

Katholieke Universiteit Leuven, K.u. Leuven Research & Development

Florian De Roose

Jan Genoe

Wim Dehaene

Kris Myny

Jiwon Lee

Pierre Boulenc

This patent disclosure relates to an ultrasound transducer including an array of ultrasound transducing elements, a plurality of transducer drive lines. The ultrasound transducer further includes an array of control circuits, wherein each individual control circuit includes a drive switch and a memory element, the drive switch comprising at least one thin-film transistor, the memory element being configured to store and control the state of the drive switch. The ultrasound transducer further configured so each individual ultrasound transducing element of the array of ultrasound transducing elements has one associated control circuit of the array of control circuits and one associated transducer drive line of the plurality of transducer drive lines, and wherein the ultrasound transducer is configured to, for each individual ultrasound transducing element, drive the individual ultrasound transducing element by the associated transducer drive line when the drive switch of the associated control circuit is in the on-state.

Ultrasound transducer and a system

An image sensor comprises at least two vertically stacked photo-sensitive devices wherein each respective photo-sensitive device comprises a stack of a top electrode, a first charge transport layer and an active layer. Each respective stack generates electrical charges in response to a corresponding predefined range of wavelengths of light incident on the image sensor. Each photo-sensitive device further comprises a second charge transport layer having a first portion, vertically aligned underneath the active layer, and a second portion, transfer region, protruding laterally to extend beyond the active layer. A dielectric layer separates the first portion from a bottom electrode providing a voltage for depleting the first portion, and the transfer region from a transfer gate providing a voltage for transferring the generated electrical charge to a floating electrical connection, shared by all stacked photo-sensitive devices. The floating electrical connection couples to a read-out-circuitry.

Image sensor comprising stacked photo-sensitive devices

Growing community of inventors

Rumst, Belgium

Florian De Roose