Light emitting diode display with PCB base

Details Light emitting diode display with PCB base Light emitting diode display with PCB base

1990-10-26

1992-06-02

Hille, Rolf

Electricity: electrical systems and devices

Safety and protection of systems and devices

With specific current responsive fault sensor

357 81, 357 74, 357 75, 361387, 361388, 362373, 362800, H01L 3902

Patent

active

051191741

ABSTRACT:
A light emitting diode display with PCB base, LED members affixed thereon by conductive epoxy, and bonding wire, wherein the PCB is punched with reflector dish on each LED die attach zone so as to reflect and concentrate the light emitted from the LED to increase the luminous intensity of the display, and near each die attach zone is formed a plating through hole to increase the heat-dispersing area of the LED and improve the stability of the forward voltage and wave length (color) of the LED and decrease the light output degradation of the LED to prolong the life of the display.

REFERENCES:
patent: 4742432 (1988-05-01), Thillays et al.
patent: 4935665 (1990-06-01), Murata
patent: 5012387 (1991-04-01), Ohlenburger

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