| 摘要 |
<p>PROBLEM TO BE SOLVED: To provide a D/A conversion circuit within a small area by dividing a digital signal into high-order bits and low-order bits, selecting two adjacent gradation voltage lines corresponding to the high-order bits, preparing plural gradation voltages from the gradation voltages of these gradation voltage lines, and supplying the correspondent gradation voltage among the prepared gradation voltages corresponding to the low-order bits. SOLUTION: Two adjacent gradation voltage lines are always selected by swA and swB. Thus, even when any digital signal of 2 bits is inputted, two adjacent gradation voltage lines are selected by swA and swB, and the gradation voltage is supplied to a first output line 108 (108-1 and 108-2). In this case, the first output line to be selected by four internal switches of swA is made into first output lines (H) 108-1, and the first output line to be selected by four internal switches of swB is made into first output line (L) 108-2.</p> |
