Data driver and method of driving the same

摘要

A data driver capable of generating pre-emphasis voltages is provided. The data driver includes a pre-emphasis unit for comparing previous input data signals with current input data signals to generate pre-emphasis data signals, a first register unit for storing the current input data signals from the pre-emphasis unit and for supplying the previous input data signals to the pre-emphasis unit, and a second register unit for storing the pre-emphasis data signals.

主权项

1. A data driver comprising:
a pre-emphasis unit for: outputting current input data signals; inputting previous input data signals; comparing the previous input data signals with the current input data signals to generate pre-emphasis data signals; and outputting the pre-emphasis data signals; a first register unit for storing the current input data signals output from the pre-emphasis unit and for supplying the previous input data signals to the pre-emphasis unit; and a second register unit for storing the pre-emphasis data signals output from the pre-emphasis unit, wherein the pre-emphasis unit comprises: a subtracting unit for subtracting the previous input data signals from the current input data signals to generate subtraction data signals; an operating unit for dividing the subtraction data signals by different powers of 2 to generate a plurality of operation data signals; a selecting unit for selecting a subset of the operation data signals to correspond to a control signal and for outputting a first sum of the selected operation data signals; and an adding unit for adding the first sum to the current input data signals.