SOURCE DRIVE DEVICE, LCD AND DRIVING METHOD

摘要

A source drive device and a driving method for LCD are provided. The source drive device comprises a grayscale producing circuit (10), a first switching circuit (T1), a source driver (20) and a logic control time sequence circuit (30). The source driver (20) comprises a source drive latch (2) and a plurality of branches, wherein each branch comprise a D/A converter (1) , a source driver cache (3), a second switching circuit (T2) and a third switching circuit (T3). The logic control time sequence circuit (30) is configured so that there is at least one charge-sharing time interval in which the first switching circuit (T1) is in OFF state while the second switching circuit (T2) and the third switching circuit (T3) are in ON state.