Patent ID: 6801186
Filing Date: 2004-10-05
Classification: G09G,G11C,H03K

Abstract:
An analog buffer for delivering an input voltage transmitted from a driving circuit to a data line so as to display a picture, comprising:a first transistor and a second transistor connected in a push-pull circuit; a first switch and a third switch for switching a first reference voltage and a second reference voltage, respectively, such that a same current flows in sources of the first and second transistors; a first capacitor for charging a voltage between a gate and the source of the first transistor; a second capacitor for charging a voltage between a gate and the source of the second transistor; a second switch for switching an application of the input voltage to an input stage of the push-pull circuit; and a fourth switch for switching a charge of the voltages between the gates and the sources of the first and second transistors stored in the first and second capacitors.