| 摘要 |
<p>The present invention relates to an LCD for improving dynamic contrast by adjusting gamma voltages according to the brightness of an image. The LCD according to the present invention includes: a liquid crystal display panel assembly having a plurality of pixels provided on crossing areas of a plurality of gate lines and a plurality of data lines; a gate driver applying voltage signals for sequentially scanning the gate lines; a source driver applying voltage signals for image display to the data lines; a timing controller providing image data and a control signal for the source driver, providing a gate line on/off control signal for the gate driver, and transmitting digital gamma data from a memory installed therein to the source driver; and a D/A converter connected to the timing controller via a digital interface for converting the digital gamma data from the timing controller into analog signals to generate a plurality of gamma voltages and outputting the gamma voltages to the source driver. A feature of the present invention is to generate the gamma voltages by converting the digital gamma data from the timing controller into analog signals by the D/A converter in place of using serially-connected resistors. Accordingly, the gamma voltages according to the present invention can vary depending on the brightness of the image.</p> |
