DISPLAY DEVICE HAVING IMPROVED CONTRAST RATIO

摘要

A display device includes a display panel, a gray-scale voltage generator, and a data driver. The data driver includes a first amplifier. The first amplifier includes a first voltage input terminal configured to receive a first voltage, a second voltage input terminal configured to receive a second voltage lower than both the first voltage and a common voltage to be applied to a pixel included in the display panel, an input terminal configured to receive a gray-scale voltage having a gray-scale level corresponding to image data, and an output terminal configured to output the data voltage as a buffered voltage corresponding to the gray-scale voltage.

主权项

1. A display device comprising:
a display panel that includes a plurality of pixels each configured to receive both a common voltage and a data voltage that corresponds to image data; a gray-scale voltage generator configured to generate a plurality of reference gray-scale voltages; and a data driver configured to receive the image data and the reference gray-scale voltages and to generate the data voltage, wherein the data driver comprises a first amplifier having a first voltage input terminal configured to receive a first voltage, a second voltage input terminal configured to receive a second voltage lower than both the first voltage and the common voltage, an input terminal configured to receive a gray-scale voltage having a gray-scale level corresponding to the image data, and an output terminal configured to output the data voltage as a buffered voltage corresponding to the gray-scale voltage.