Patent · US Active

Cost effective low pin/ball count level-shifter for LCD bias applications supporting charge sharing of gate lines with perfect waveform matching

US9251753B2 · kind B2 · utility

0Cited by

1References

20Claims

0Family size

Assignee

TEXAS INSTRUMENTS DEUTSCHLAND GMBH · DE

Inventors

Stefan Reithmaier · Freising, DE
Josy Bernard · Freising, DE
Carsten I. Stoerk · Freising, DE
Nicolas M Guibourg · Munich, DE

Key dates

Filing date	Dec 19, 2013
Grant date	Feb 2, 2016
Priority date	—
Expiry date	Apr 17, 2034

Classification

Technology area (CPC G)Physics
CPC primaryG09G2330/023
WIPO fieldAudio-visual technology
WIPO sectorElectrical engineering

Abstract

A level shifter circuit has a plurality of channels for providing signals to a capacitive load and has circuits for sharing charge stored in the capacitive load between the channels. A first pair of channel clock generating circuits are coupled respectively to a first pair of channels. A second pair of channel clock generating circuits are coupled respectively to a second pair of channels. A pair of switches couple the first pair of channels together and the second pair of channels together, respectively, for sharing charge between the channels. A single resistor is coupled in circuit with all of the channels for controlling a slope of charge sharing between channels.

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