Patent ID: 8446354
Filing Date: 2013-05-21
Classification: G09G

Abstract:
1. A liquid crystal display, comprising: a plurality of pixel units; a scanning circuit configured to activate the pixel units; a data circuit configured to provide data voltage signals to the activated pixel units via parallel data lines; a feedback line parallel to the data lines; a plurality of signal processing units respectively connected to the data lines; and a common voltage circuit configured to generate a common voltage signal according to a feedback signal received via the feedback line; wherein each pixel unit comprises a coupling member, the coupling member is configured to generate a respective coupling signal according to one of the data voltage signals that is applied to the corresponding activated pixel unit, and superpose the coupling signal to the data voltage signal to form a superposing signal comprising a first cusp wave part formed by the coupling signal and a square wave part formed by the data voltage signal, each of the signal processing units is configured to convert the square wave part of the superposing signal into a second cusp wave part that is independent from the first cusp wave part, the feedback line is configured to provide the feedback signal comprising an averaged first cusp wave part and an averaged second cusp part, to the common voltage circuit, and the common voltage circuit is configured to adjust a reference voltage signal according to the feedback signal, and provide the adjusted reference voltage signal as the common voltage signal to the pixel units.