Loading patent…
AssigneeSharp Laboratories of America, Inc.
InventorsPaul J. Schuele, Themistokles Afentakis, John W. Hartzell
Estimating the term…
A video display is provided with a planar piezoelectric transmitter to transmit ultrasound signals, and a display panel including a plurality of pixels. Each pixel has a data interface to accept a video signal with a variable voltage associated with a range of light intensity values, and to supply a touch signal with a variable voltage derived from a range of reflected ultrasound signal energies. Each pixel is made up of a light device to supply light with an intensity responsive to the video signal voltage, and a storage capacitor to maintain a video signal voltage between refresh cycles. A piezoelectric transducer accepts a reflected ultrasound signal energy and maintains a touch signal voltage between refresh cycles. In one aspect, the storage capacitor and the piezoelectric transducer are the same device. The light device may be a liquid crystal (LC) layer or a light emitting diode.
A video display pixel with ultrasonic touch sensor, pixel comprising:
A video display comprising:
A method for operating a touch-sensitive video display pixel, the method comprising:
A method for operating a touch-sensitive video display, the method comprising:
Dependencies are inferred from the claim text.