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:
Dec. 01, 2015
Filed:
Sep. 07, 2011
Yongman Lee, Pleasanton, CA (US);
Yongman Lee, Pleasanton, CA (US);
Apple Inc., Cupertino, CA (US);
Abstract
Techniques for operating a touchscreen display are disclosed herein. In one embodiment, the touchscreen display device includes power regulation circuitry that supplies a first set of voltages to a display panel using high and low supply rails during a display period. During the blanking period following the display period, the high and low supply rails may be adjusted to a second set of voltages that provide for proper operation of touch-sensitive elements in the touchscreen display. Following the end of the blanking period, a portion of charge from the low supply rail is recycled by transferring the charge from the low supply rail back to the high supply rail to bring the high and low supply rails back to the first set of voltages for the next display period.