Motion circuit and on-board driver circuit for liquid crystal display panel employing the motion circuit

摘要

The motion circuit of the present invention is an on-board driver circuit which is composed of polycrystal silicon semiconductor layers formed on a substrate, and which is provided with a first latch circuit for latching one of a normal phase and reverse phase clock signals having a clock skew using a clock signal and for outputting it to a shift register, and a second latch circuit for latching the other one of the normal phase and reverse phase clock signals using a clock signal and for outputting to the shift register. The latch operations of the first and second latch circuits are timed to make the two clock signals have reverse polarities. Consequently, it is realized to provide a motion circuit performing stable circuit operations without malfunctions, by preventing the occurrence of the fail phenomenon due to a skew between the normal phase and reverse phase clock signals which drive the shift register. It is also realized to provide an on-board driver circuit for a liquid crystal display panel by employing the motion circuit.