Source driving circuit of LCD apparatus

Details Source driving circuit of LCD apparatus Source driving circuit of LCD apparatus

2009-03-17

2011-11-15

Tzeng, Fred (Department: 2627)

Computer graphics processing and selective visual display system

Display driving control circuitry

Display power source

Reexamination Certificate

active

08059115

ABSTRACT:
A source driver circuit of an LCD apparatus with a small occupied area and low power consumption is disclosed. The source driver circuit comprises a reference voltage circuit, a negative voltage driving DAC, a positive voltage driving DAC, an invert amplifier, a non-invert amplifier and a voltage selector. The reference voltage circuit generates a reference voltage. The negative voltage driving DAC divides the display data into negative gradation voltages. The positive voltage driving DAC divides the display data into positive gradation voltages. The invert amplifier works as an analogue buffer for the negative gradation voltages for driving the LCD apparatus and the non-invert amplifier works as an analogue buffer for the positive gradation voltages for driving the LCD apparatus. The voltage selector provides the reference voltage to the positive and negative voltage driving DACs.

REFERENCES:
patent: 4166983 (1979-09-01), Lacroix
patent: 4661781 (1987-04-01), Van Tuijl
patent: 5166632 (1992-11-01), MacKenzie
patent: 5731796 (1998-03-01), Furuhashi et al.
patent: 6127995 (2000-10-01), Furuhashi et al.
patent: 6316995 (2001-11-01), Chen et al.
patent: 6384807 (2002-05-01), Furuhashi et al.
patent: 7038649 (2006-05-01), Furuhashi et al.
patent: 7605830 (2009-10-01), Date
patent: 7639059 (2009-12-01), Yu et al.
patent: 2006/0125764 (2006-06-01), Furuhashi et al.
patent: 2007/0229442 (2007-10-01), Yi

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