Patent ID: 9589532
Date: 2017-03-07
CPC Classifications: G09G

Claim:
1. A data driver comprising: a plurality of buffers that respectively output data voltages corresponding to pixel image data; a plurality of bias units that correspond to the buffers in a one-to-one correspondence and drive the buffers, respectively; and a global setting part that applies a plurality of control level values to the bias units, and further applies a plurality of activation signals to the bias units, the plurality of activation signals each defining a transition period and a control period, wherein each of the bias units comprises: a bias signal generating unit that selects one control level value among the control level values and one activation signal among the plurality of activation signals based on a corresponding pixel image data among the pixel image data and generates a bias signal having a transition level value during the transition period of the selected activation signal and having the selected control level value during the control period of the selected activation signal; and a current generating unit that generates a corresponding bias current in response to the bias signal and applies the corresponding bias current to a corresponding buffer among the buffers.