Patent ID: 8125478
Filing Date: 2012-02-28
Classification: G09G

Abstract:
1. A switching voltage controlling circuit that is adapted to a liquid crystal display (LCD), the LCD comprising a display panel and a plurality of gate drivers, the display panel comprising a plurality of pixel units, the switching voltage controlling circuit comprising: a current-controlled switch, having a first terminal and a second terminal, the first terminal being coupled to a constant voltage; a transmission line, having a first terminal and a second terminal, the first terminal being coupled to the second terminal of the current-controlled switch, the transmission line being serially coupled to the gate drivers, wherein the gate drivers generate a switching voltage according to a voltage provided by the transmission line and control the pixel units; and a feedback circuit, coupled to the transmission line and the current-controlled switch, the feedback circuit regulating an amount of a current passing through the current-controlled switch according to a voltage difference between the first terminal and the second terminal of the transmission line, wherein the feedback circuit comprises: