Integrated semiconductor light-emitting display array

Details Integrated semiconductor light-emitting display array Integrated semiconductor light-emitting display array

1974-08-16

1976-03-30

Trafton, David L.

Communications: electrical

Systems

Portable self-contained

313500, 357 17, 357 45, 358 59, G08B 536

Patent

active

039478408

ABSTRACT:
An integrated LED display array wherein light is emitted and observed through a light-transmissive substrate, i.e., single crystal, which carries a plurality of optically isolated LED assemblies. Scattering of light from individual assemblies is prevented by an optically absorbing doped region which optically isolates each assembly. Light is generated at the back of the single crystal and viewed through the crystal. The LED assemblies, preferably multicolor, are directly mated to energizing electronic circuitry, e.g., a monolithic integrated circuit, via appropriate interconnections sandwiched between the two. The energizing electronic circuitry comprise an array of circuit elements which provide the energizing currents for respective ones of the LED assemblies.

REFERENCES:
patent: 3388292 (1968-06-01), Burns
patent: 3617823 (1971-11-01), Hofstein
patent: 3668688 (1972-06-01), Schmersal
patent: 3737704 (1973-06-01), Grenon et al.
patent: 3781515 (1973-12-01), Morris et al.
patent: 3783353 (1974-01-01), Pankove
patent: 3807036 (1974-04-01), Fischer
patent: 3807037 (1974-04-01), Fischer
patent: 3813587 (1974-05-01), Umeda et al.
patent: 3817798 (1974-06-01), Jacobus et al.
patent: 3846193 (1974-11-01), Jacobus et al.

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