| 摘要 |
<p>PURPOSE:To eliminate the need for an exclusive sputtering device, and to improve CMRR easily by a hole in a passivation film so as to form a partial conduction with a second aluminum layer at ground potential in the light- receiving IC pellet of a photocoupler and fitting a light-transparent conductive film onto the passivation film. CONSTITUTION:A light-transmitting conductive film 1 is mounted onto a passivation film 2, to which holes are bored, so as to be conducted with a second aluminum layer at ground potential. Consequently, the light-transmitting conductive film 1 is brought to ground potential electrically, and a light-receiving section is sealed. Accordingly, CMRR can be improved through the extremely simple method only of the mounting of the film.</p> |
