LED Arrays Fabricated without Wire Bonds

概要

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LED arrays were produced using a simple bonding technique without wires. For this purpose LED's were fabricated with both contacts on the epitaxial layer side. They were mounted upside down and simultaneously contacted with silver epoxy on metallized insulating carriers. The properties of these diodes are practically equal to those of standard LED's. With one-side-contacted LED's five array types were realized : (1) two-digit displays with 16 chips in hybrid technique, (2) 50-element linear monolithic arrays with low cross-talk, (3) rectangular arrays with 8×12 elements (hybrid), (4) two-colour version of (3) using 192 diodes altogether, (5) 15×14-element arrays with 15 external connections only. With these applications the practicability of the simplified contacting method was successfully demonstrated.
社団法人応用物理学会の論文
1980-03-05