Line drive circuit, electro-optic device, and display device

Details Line drive circuit, electro-optic device, and display device Line drive circuit, electro-optic device, and display device

2008-05-27

2008-05-27

Lefkowitz, Sumati (Department: 2629)

Computer graphics processing and selective visual display system

Plural physical display element control system

Display elements arranged in matrix

C345S100000, C345S211000, C345S212000

Reexamination Certificate

active

07379045

ABSTRACT:
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 apparatus10has an LCD panel20, a signal driver30, a scan driver50, and a power supply circuit80, each of which is controlled by an LCD controller60. Signal driver30contains an interface unit200for 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 unit200is made up devices using a medium voltage process. Interface unit200receives and converts low voltage signals (i.e. first voltage level) supplied from LCD controller60to high voltage signals (i.e. second voltage level), and supplies the level-shifted voltage signal to scan driver50or power supply circuit80.

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