Pipelined charge metering digital-to-analog data line driver

Details Pipelined charge metering digital-to-analog data line driver Pipelined charge metering digital-to-analog data line driver

1994-10-14

1995-06-20

Young, Brian K.

Coded data generation or conversion

Sample and hold

341124, G09G 336

Patent

active

054264308

ABSTRACT:
A data line driver circuit having application in active matrix displays, such as thin-film transistor liquid crystal displays, uses charge metering techniques to achieve high precision and analog pipelining. Pipelining permits both the digital-analog conversion function and the presentation of the analog output to the display data line each to occupy most of the display's line time. The requirement of liquid crystals for periodic inversion of the net applied voltage is accommodated either by the circuits alone or with the display common electrode driven by a square wave.

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