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:
Nov. 16, 2012
Apple Inc., Cupertino, CA (US);
Ahmad Al-Dahle, Santa Clara, CA (US);
Yafei Bi, Palto Alto, CA (US);
Mir B. Ghaderi, Cupertino, CA (US);
Apple Inc., Cupertino, CA (US);
Abstract
Systems and methods for monitoring internal resistance of a display may include supplying the display via a capacitor with a first voltage and a second voltage configured to enable the display to receive touch inputs and display image data, respectively. The method may discharge the capacitor at least three times via a first resistor, a second resistor, and the first resistor and second resistor coupled in parallel with each other. The method may monitor three discharge waveforms that corresponds to when the capacitor discharges from the first voltage to the second voltage via the first resistor, the second resistor, and the first resistor and second resistor coupled in parallel with each other. Based at least in part on the discharge waveforms, the method may determine a chip on glass resistance value and a flex on glass resistance value that correspond to an internal resistance of the display.