Patent ID: 8692751
Filing Date: 2014-04-08
Classification: G09G,H02M,H03K

Abstract:
1. A gate-on voltage generator comprising: a temperature sensor including an operational amplifier configured to receive a driving voltage and produce a temperature-dependent variable voltage, the level of which varies according to an ambient temperature; and a charge pumping unit shifting the temperature-dependent variable voltage by an amplitude of a pulse signal fed thereto and generating a gate-on voltage, wherein the temperature sensor comprises one or more diodes each of the one or more diodes having an inherent variable threshold voltage characteristic of the respective diode that varies according to a change of the ambient temperature and produces a variable comparison voltage based upon the variation of the inherent variable threshold voltage characteristic of the one or more diodes, the voltage comparison voltage being fed to an input of the operational amplifier, wherein the pulse signal fed to the charge pumping unit is a pulse width modulation signal, and wherein the driving voltage and an amplitude of the pulse signal are irrelevant to an ambient temperature.