Patent ID: 8139056

Claim:
A power generating module for Liquid Crystal Display (LCD) having a plurality of pixel units where each pixel unit includes a switching element connected to receive and selectively pass through a corresponding liquid crystal driving voltage, the switching element being further connected to receive and respond to each of a predetermined and nominal gate-on voltage that can turn the switching element on and a predetermined and nominal gate-off voltage that can turn the switching element off, the power generating module comprising: a first driving voltage generator configured to generate and output a first set of LCD driving voltages including a first liquid crystal driving voltage and a first gate-on voltage; a second driving voltage generator configured to generate and output a second set of LCD driving voltages including a second liquid crystal driving voltage and a second gate-on voltage, where the first and second liquid crystal driving voltages are counterpart components with respect to one another and where the first and second gate-on voltages are counterpart components with respect to one another; and an output deviation controller coupled between the first driving voltage generator and the second driving voltage generator, the output deviation controller being configured to control the first and second driving voltage generators using one or more feedback signals each having a magnitude which is a function of a potential difference between respective counterpart components of the first and second sets of LCD driving voltages.