Patent · US Active

Charge pump for producing display driver output

US9135843B2 · kind B2 · utility

1Cited by

15References

20Claims

0Family size

Assignee

QUALCOMM MEMS Technologies, Inc. · US

Inventors

Didier H. Farenc · San Diego, US
Nada Vukovic-Radic · San Diego, US

Key dates

Filing date	Nov 15, 2012
Grant date	Sep 15, 2015
Priority date	—
Expiry date	Dec 10, 2032

Classification

Technology area (CPC G)Physics
CPC primaryG09G2330/028
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

This disclosure provides systems, methods and apparatus for driving a display array with a waveform having a plurality of voltage levels, wherein a first subset of the plurality of voltages is different from a second subset of the plurality of voltages by a defined amount. In one aspect, a display driver circuit comprises a power supply configured to generate the first subset of said plurality of voltages, and a charge pump having the first subset of the plurality of voltages as inputs and the second subset of the plurality of voltages as outputs. The charge pump may not include a switch between each output voltage and a corresponding capacitor.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.