Patent attributes
A line driver circuit, an electro-optic device, and a display apparatus efficiently reduce cost by reducing process dimensions and effectively shorten display panel development turn-around time by simplifying the reconfiguration of output voltages. The liquid crystal apparatus 10 has an LCD panel 20, a signal driver 30, a scan driver 50, and a power supply circuit 80, each of which is controlled by an LCD controller 60. Signal driver 30 contains an interface unit 200 for converting a first voltage specified for a low voltage process to a second voltage specified for a high voltage process. The interface circuitry within interface unit 200 is made up devices using a medium voltage process. Interface unit 200 receives and converts low voltage signals (i.e. first voltage level) supplied from LCD controller 60 to high voltage signals (i.e. second voltage level), and supplies the level-shifted voltage signal to scan driver 50 or power supply circuit 80.
