What question did this study set out to answer?

The aim is to develop a flexible cardiac ultrasound patch capable of advanced imaging techniques using 2D beamsteering technology.

April 21, 2026

Differential‐Driven MHz‐Range High‐Voltage Ultrasound 2D Beamsteering 50.4 cm2 Imaging Cardiac Patch in LTPS

Puntos clave

The aim is to develop a flexible cardiac ultrasound patch capable of advanced imaging techniques using 2D beamsteering technology.
Developed a 480 m-pixel ultrasound patch based on LTPS TFT and flexible substrates.
Implemented 2D beamsteering with a signal acquisition rate of 5 kfps.
Measured key performance indicators including signal-to-noise ratio and power dissipation.
Achieved a signal-to-noise ratio of 39.82 dB.
Demonstrated power dissipation of 7.72 mW with non-uniformity below 0.3%.
Enabled high-voltage output of 60 V using 3.3 V input, enhancing imaging capabilities.

Resumen

ABSTRACT A ‐ (480 m)‐pixel cardiac ultrasound patch LTPS TFT system on flexible substrate is presented in this paper. The design is capable of selecting emission windows on both horizontal and vertical direction enabling 2D beamsteering at 5 kfps. The system is verified for 10V pp 500 kHz transducer signal with an SNR of 39.82 dB. Power dissipation is measured 7.72 mW. Non‐uniformity of the signal inside the emission is measured below 0.3%. High‐voltage gate drivers enable 60 V pp output from 3.3‐V input. A short transistor suppresses cross‐talk by more than 3.

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Differential‐Driven MHz‐Range High‐Voltage Ultrasound 2D Beamsteering 50.4 cm2 Imaging Cardiac Patch in LTPS

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