Display panel driving device and display device

摘要

A display device is provided that effectively reduces noise generated inside a display panel such as a liquid crystal panel. The source driving unit of the display device includes positive amplifiers, negative amplifiers, a positive amplifier regulating unit and a negative amplifier regulating unit. The positive amplifiers transmit positive driving signals to the display panel unit via source lines. The negative amplifiers transmit negative driving signals to the display panel via source lines. The positive amplifier regulating unit regulates the timing for the positive amplifiers to output positive driving signals. The negative amplifier regulating unit regulates the timing for the negative amplifiers to output negative driving signals.

主权项

1. A display panel driving device for driving a display panel including a plurality of source lines and a plurality of gate lines and pixels each provided at the intersection of a source line and a gate line, comprising:
positive amplifiers each configured to transmit a positive driving signal to the display panel via a source line; negative amplifiers each configured to transmit a negative driving signal to the display panel with via a source line; a positive amplifier regulating unit configured to regulate timing for the positive amplifiers to output the positive driving signals; a negative amplifier regulating unit configured to regulate timing for the negative amplifiers to output the negative driving signals; and a gate driving unit configured to drive and control the display panel by supplying the display panel with gate line control signals via the gate lines, wherein, the positive amplifier regulating unit further regulates driving capability of the positive amplifiers; the negative amplifier regulating unit further regulates driving capability of the negative amplifiers; and the positive amplifier regulating unit further regulates driving capability of the positive amplifiers such that noise components superimposed on the positive driving signals in a state after the positive driving signals have passed through switch elements each contained in the display panel and noise components superimposed on the negative driving signals in a state after the negative driving signals have passed through switch elements each contained in the display panel are offset.