| 摘要 |
<p>PROBLEM TO BE SOLVED: To realize a high reliability planar display device by suppressing deterioration in the characteristics of peripheral driving circuits. SOLUTION: A buffer constituting a peripheral driving circuit includes a plurality of stages of CMOS inverters, and an n type TFT of an odd-numbered inverter is of a double-gate structure, and an n type TFT of an even-numbered inverter is of a single gate structure. Otherwise, a gate width or a gate length of the n type TFT of the odd-numbered inverter is made larger than that of the n type TFT of the even-numbered inverter.</p> |
