| 摘要 |
<p>PURPOSE: A semiconductor device is provided to have a circuit component portion which is difficult to analyze so as to prevent copy, imitation and altering of information by other people. CONSTITUTION: A semiconductor device includes a semiconductor substrate(1) having a main circuit part(1a) including a predetermined active element and the like on a silicon substrate, an interconnection(2) transmitting to the active element an externally supplied input signal or transmitting an output signal to be supplied to any external unit, an opening(3) for input/output of the externally supplied signal or the signal to be supplied to any external unit to and from the interconnection(2), an insulating protection film(4) for protecting the interconnection(2) and an underlying portion thereof, a conductive metal film(5) arranged above the main circuit part(1a), and an aluminum oxide film(6) arranged to cover the conductive metal film(5). This structure can preclude the main circuit part(1a) from being discerned by visual observation, a visible light microscope and an IR microscope, and accordingly imitation, copy and altering of the main circuit part(1a) by other people can be prevented.</p> |
