The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Nov. 18, 2014
Filed:
Jan. 11, 2013
Sharp Laboratories of America, Inc., Camas, WA (US);
Paul Schuele, Washougal, WA (US);
Themistokles Afentakis, Camas, WA (US);
John Hartzell, Camas, WA (US);
Sharp Laboratories of America, Inc., Camas, WA (US);
Abstract
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.