Spectrum? S-922N-LED0 pages

Spectrum™ S-922N-LED
Dispensing System for LED Cavity Encapsulation
Features and Benefits

The S-922N-LED dispenser with DispenseJet®
technology is faster than a competitor’s dualvalve configuration and easier to setup and
operate

Nordson ASYMTEK’s jet automatically dispenses
the same volume of material in each cavity for
precise, consistent white LED color quality

Software-managed, closed-loop jetting
eliminates the need for numerous quality checks
and manual adjustment by operators to keep the
process under control

Single loading point for dispensing and handling
reduces footprint by one third while maximizing
throughput

The Spectrum S-922N-LED dual-lane dispensing
system is faster than competitive dual-auger and
multi-head air-over valve systems and is easier to
setup and operate. Available as a standalone
dispenser or integrated with the Nordson
ASYMTEK MH-912S same-side feed
loader/unloader, the system provides closed-loop
weight control for greater yield and higher UPH
than other LED needle dispensers with multiple
dispense heads.
The largest driver for the white LED market is
display backlighting for televisions, tablet PCs and
e-readers (top emission LEDs for television and
side-view LEDs for tablet PCs and e-readers).
Tightness of CIE (or bins) is the key LED
differentiator; color is a key variable that affects
CIE. Silicone phosphor dispensing is critical to
color quality, and cavity encapsulation is the most
common method used.

DispenseJet® technology enables high-speed
jetting of phosphor-filled silicone. Silicone is

difficult to dispense due to its compressible (elastic)
nature. With needle dispensing, long retract moves
are needed to snap off silicone tails, contributing to
lower units-per-hour and lower yield.

Nordson ASYMTEK’s DispenseJet® DJ-9000 series
valve delivers quick, multiple shots to ensure fluid
weight accuracy, consistency, and tighter tolerance.
Tighter tolerance contributes to tighter CIE LEDs.

The patented Active Nozzle™ Jetting System
improves silicone break-off, and eliminates the need
for operator intervention or maintenance intervals.
The DispenseJet valve has the ability to jet
100-200 µm dots into 400-µm cavities, not possible
with traditional needle dispensing.
With its advanced tuning algorithms and jetting
technology, the S-922N-LED platform is often 2-3
times faster than competitive needle dispensers.

Advanced Calibrated Process Jetting (ACPJ+)
significantly reduces process variability. Also

included, Nordson ASYMTEK’s Advanced CPJ+
software and support tools are designed specifically
for LED production. Advanced CPJ+ ensures the
targeted fluid weight per cavity (mass per part) is
maintained within a prescribed tolerance by
automatically adjusting fluid pressure, dots per
cavity, and valve on/off times at programmed
intervals.

The S-922N-LED dispenser with integrated
handling is fast and reduces process variation for
higher yields. Operator interface is minimal, keeping
your process under machine control for lower cost
overall.