Surface mount LED alphanumeric display

Details Surface mount LED alphanumeric display Surface mount LED alphanumeric display

1995-12-27

1999-11-23

Sparks, Donald

Electricity: electrical systems and devices

Housing or mounting assemblies with diverse electrical...

For electronic systems and devices

174 524, 257 99, 257100, 257787, 361820, H05K 702, H01L 2328

Patent

active

059911603

ABSTRACT:
The heat tolerance of an LED alphanumeric display device having a clear epoxy encapsulation can be improved by matching the coefficient of thermal expansion (CTE) of the inner circuit board to the high CTE of the epoxy. When heat is applied to fix the device to a circuit board, the components will expand at a nearly equal rate, avoiding cracking and failure.

REFERENCES:
patent: 4724472 (1988-02-01), Sugimoto et al.
patent: 4843036 (1989-06-01), Schmidt et al.
patent: 5313365 (1994-05-01), Pennisi et al.
patent: 5463229 (1995-10-01), Takase et al.
patent: 5682066 (1997-10-01), Gamota et al.

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