Patent ID: 8212749

Claim:
A driver circuit for driving an active-matrix display panel, comprising: a current Digital-to-Analog Converter (CDAC) for generating driving current corresponding to input digital data; a data line providing said driving current to an array of pixel prepared on the display panel; an adjacent data line providing a similar or equivalent resistive and capacitive load of said data line; two driving transistors M 1 and M 2 , wherein the source of the transistor M 1 is connected to said data line and the source of the transistor M 2 is connected to said adjacent data line; two current source, wherein the one current source is connected to the source of the transistor M 1 and the other current source is connected to the source of the transistor M 2 ; a current mirror for feeding back transient charging current is generated by the parasitic capacitance of the adjacent data line, as current for charging the data line; a voltage source VDD connected to the sources of transistor of said current mirror; a differential amplifier whose output is connected to the gates of the transistor M 1 and M 2 ; a constant voltage V REF connected to the negative input of said differential amplifier; a node A 1 that ties the output of the CDAC, the positive input of the differential amplifier, the output of the current mirror and the drain of the transistor M 1 ; a node A 2 that ties the input of the current mirror and the drain of the transistor M 2 .