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PC(UK) Member
Email: info@universal-science.com
Website: www.universal-science.com
Universal Science has addressed the growing demand for designs that
use an LED matrix to provide an effective lighting solution by introducing
its LED custom module service. The modules comprise a matrix of
customer specified surface mount LEDs soldered to an etched copper
layer; this is separated from an aluminium heat-dissipating base
by a thermally efficient, electrically isolating dielectric material.
LED matrix based designs are increasingly being used in applications
such as automotive lighting clusters, emergency lighting, sign lighting
and decorative lighting in place of traditional filament lamps and
fluorescent tubes. The primary benefits of LED light in this type
of application are that it provides even, reliable, low power consumption
illumination. It also gives a high degree of design freedom and
greatly simplifies lens design helping to reduce cost of the finished
assembly.
The main design hurdle to be overcome with an LED matrix design
is the management of heat generated by the LEDs during normal operation.
Universal Science's insulated metal circuit board material achieves
this by transferring heat on the etched copper side of the board
to the aluminium base material via the thin dielectric layer which
has a thermal conductivity of 3w/m-k - ten times the heat dissipating
capability of standard FR4 PCB material. It has a dielectric strength
of 800V/mil and is available in thicknesses of 8, 10 and 12mils.
The metal base material, usually aluminium or copper, is available
in standard thicknesses of 1mm (0.040inch.), 1.6mm (0.062inch),
and 2.0mm (0.080inch). Universal Science is able to support designs
in a number of formats including discs with diameters ranging from
25mm diameter to 300mm, rectangles up to 300mm x 150mm, and 25mm
wide strips in a choice of lengths.
Other dielectric materials are available with low modulus that can
accommodate the coefficient of expansion of the metal elements of
the construction and allows 180 degree and 360 degree parts to be
formed with a curve or complete circle; these can have either internal
or external copper traces.
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