AREA-SAVING DRIVING CIRCUIT FOR DISPLAY PANEL

摘要

The present invention relates to an area-saving driving circuit for a display panel, which comprises a plurality of digital-to-analog converting circuits convert input data, respectively, and produce a pixel signal. A plurality of driving units are coupled to the plurality of digital-to-analog converting circuits, respectively. They produce a driving signal according to the pixel signal and transmit the driving signal to the display panel for displaying. A plurality of voltage booster units are coupled to the plurality of driving units, respectively, and produce a supply voltage according to a control signal. Then the supply voltage is provided to the plurality of driving units. Thereby, by providing the supply voltage to the plurality of driving units of the display panel by means of the plurality of voltage booster units, the area of the external storage capacitor is reduced. Alternative, the external storage capacitor can be even not required.

主权项

1. A driving circuit of a display panel, comprising:
a gamma circuit, producing a gamma voltage; a plurality of driving units, producing a reference driving voltage according said gamma voltage, respectively; a line buffer, producing a plurality of pixel data; a plurality of digital-to-analog converting circuits, receiving said reference driving voltage output by said plurality of driving units, selecting one of said plurality of reference voltages as a data driving voltage according to the pixel data, respectively, and transmitting said plurality of data driving voltages to said display panel; a voltage boost circuit, used for producing a first supply voltage, and providing said first supply voltage to said plurality of digital-to-analog converting circuits; and at least a voltage boost unit, used for producing a second supply voltage, and providing said second supply voltage to said plurality of driving units.