Patent ID: 7944426
Filing Date: 2011-05-17
Classification: G09G

Abstract:
1. A driving circuit for driving a capacitance load of a display device, the driving circuit comprising: a driving signal supply mechanism supplying a driving signal having a target voltage represented during periodic update; an amplifier mechanism, comprising: a control mechanism detecting a difference between a previous value and a present value of the target voltage during update to change a current value of the constant current source such that the bias current is higher when the difference is larger, wherein the control mechanism comprises: a buffer memory storing the previous value and the present value of the driving signal; a subtracter obtaining the difference between the previous value and the present value recorded in the buffer memory; and a memory containing suitable current values of the constant current source according to the difference, wherein the constant current source sets the current value read from the memory according to an output of the subtracter.