Patent ID: 7884788
Filing Date: 2011-02-08
Classification: G09G

Abstract:
1. A liquid crystal display device comprising: an insulating surface; a pixel over the insulating surface; a source signal line electrically connected to the pixel, over the insulating surface; a gate signal line electrically connected to the pixel, over the insulating surface; a signal line driver circuit configured to drive at least one of the gate signal line and the source signal line; a D/A converter circuit configured to convert a digital audio signal into a first analog audio signal; a power supply circuit configured to supply a same voltage to the signal line driver circuit and the D/A converter circuit; a level correction circuit, wherein the level correction circuit is an attenuator circuit configured to attenuate the first analog audio signal; and a switch configured to select a selected signal from a plurality of analog signals comprising the attenuated first analog audio signal and a second analog audio signal inputted externally.