| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To stably protect an internal circuit from an electrostatic breakdown while preventing an element area from increasing even when a surge voltage is applied to power supply lines via an input or output circuit. <P>SOLUTION: Power protection elements 6a-6d are arranged in gaps between input and output cells 3c-3f, respectively, and each of the diode strings S2-S5 connected between the power supply lines 7, 8 is used as power protection elements 6a-6d. <P>COPYRIGHT: (C)2011,JPO&INPIT</p> |
