Patent ID: 8674742
Filing Date: 2014-03-18
Classification: H03K

Abstract:
1. A driver circuit, comprising: a first drive circuit that outputs an output signal to an output signal line in accordance with a voltage of an input signal; a second drive circuit with an output end that is connected to the output signal line; a first detection part that detects a voltage change of the input signal, and that detects whether a voltage level of the output signal changes from a high-level to a low-level or from the low-level to the high-level; a second detection part that detects whether or not the voltage level of the output signal reaches a third voltage level set between a first voltage level and a second voltage level; and a control part that controls the second drive circuit based on detection results at the first detection part and the second detection part, wherein the control part controls the second drive circuit to assist a change of the output signal from the first voltage level to the second voltage level until the voltage level of the output signal reaches the third voltage level, and to suppress the change of the output signal from the first voltage level to the second voltage level after the voltage level of the output signal reaches the third voltage level when the output signal changes from the first voltage level to the second voltage level in accordance with the voltage change of the input signal.