| 摘要 |
A signal line driver is used for a liquid crystal display device including a matrix array of 230x720 pixels arranged in a predetermined color order for each row, 230 scanning lines for selecting the row of the pixels, and 720 signal lines for setting the potentials of the pixels of the selected row. The signal line driver has three bus lines for receiving color video signals of three primary colors. Particularly, the signal line driver includes 721 sample-hold circuits divided into a plurality of groups and connected to the bus lines based on the color order of the pixels on a corresponding row, for sequentially sampling and holding the color video signals on the bus lines, 720 selection switches for selecting one of the groups of the sample-hold circuits according to the selected row of the pixels and allocating output voltages of the sample-hold circuits of the selected group to the 720 signal lines, and a control circuit for controlling the sample-hold circuits and the selection switches each time the selected row of the pixels is updated.
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