Conductive layer with anti-reflective surface portion

Active solid-state devices (e.g. – transistors – solid-state diode – Responsive to non-electrical signal – Electromagnetic or particle radiation

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Details

257741, 257739, 257773, 438665, H01L 310236

Patent

active

058411798

ABSTRACT:
The application of a dissimilar anti-reflective coating on a conductive layer during photolithographic processing is avoided, as by modifying a portion of the upper surface of the conductive layer to exhibit anti-reflective properties. In an embodiment of the present invention, impurity ions are implanted into a portion of the upper surface of an aluminum or an aluminum-alloy conductive layer to render the upper portion substantially amorphous and, hence, decrease its reflectivity to perform an anti-reflective function.

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