Source driver circuit including pre-decoder for driving display and method thereof

The predecoder display source driver including a (Pre-decoder) circuit and a driving method are disclosed. Display source driver circuit according to an embodiment of the present invention includes a level shifter, the pre-decoder, a decoder and amplifier. A level shifter which converts the voltage level of the data of N bits (N is a natural number). Predicate coater decodes the data output from the level shifter and generates a pre-decode data. The decoder then outputs the selected gray level voltage corresponding to the response to the pre-decoded data. Amplifier generates a display device driving signal for driving the liquid crystal display device in response to the selected gray level voltage. Predecoder display source driver circuit and a driving method having the according to the invention the on-resistance decreases only reduce the number of the series switch of the decoder, not the serial number of stages of the decoder is reduced, and RC (Resistance - Capacitance) delay is reduced resulting only is the operating speed of the driver and the driver is prevented attenuation output signal attenuation, not the serial number of the switching stage using the same is minimized, there is an advantage in that the area of ​​the source driver can be reduced. Pre-decoder, a decoder, a gray voltage