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www.us-tech.com
February, 2016
Wacker Develops HRI Silicones for LEDs
Munich, Germany — Wacker, a Munich-based chemical company, has developed new encapsulants for light emitting diodes (LEDs) and optical components. The compounds are made of highly transparent sili- cone elastomers that have a high refractive index (HRI). The material withstands high operating tempera-
for manufacturing efficient LEDs. Semiconductor chips used to
generate light in LEDs have a high refractive index. To maximize the amount of light emitted by the LED chip, the refractive index of the chip and encapsulant must be roughly the same. Transmission tests with the 590 show that a 1mm-thick layer of
THIS IS RELIABILITY
CHO-TOUCH EMI SHIELDED TOUCHSCREEN LCD DISPLAYS
Integrated EMI Shielding with LCD display for fast design cycle
Projected capacitive touchscreen for simple interface Complete assembly for reduced design complexity
CHO-TOUCH LCD Displays have been designed to reduce time to market and simplify the customer design experience. Parker Chomerics integrates touchscreens, EMI shielding, optical bonding and high performance LCDs into a complete assembly that is ready to go out of the box.
High-refractive-index silicone elastomers for LEDs.
www.chomerics.com/optical chomericsoptical@parker.com
tures and strong light without yel- lowing. It also protects the LED chip from corrosive gases, which extends the component’s service life. The encapsulation compounds can be processed in industrial metering processes, such as dispensing. The company has added the
MID AMERICA Taping and Reeling, Inc.
630.629.6646
www.matr.com
new materials to its Lumisil® line of silicone encapsulants. Lumisil 590 and 591 are highly transparent, addition-curing silicone elastomers with a refractive index of 1.53. This means they rank among HRI encap- sulants. Such grades are well-suited
the material lets 91 percent of visible light pass through. The HRI silicones are easy to
process, heat-resistant and tack-free after curing. The material flows well and has crosslinking characteristics. With viscosities of 2,000 and 2,500 mPa/s respectively, 590 and 591 per-
mit contact-free dispensing processes. Contact: Wacker Chemical
Corp., 3301 Sutton Road, Adrian, MI 49221 % 888-922-5374 Web:
www.wacker.com
See at ATX/MD&M West, Booth 1901
Henkel Intros Robust Gap Filler Compound
Tape and Reel Service & Supplies
Rocky Hill, CT — Henkel Adhesive Technologies has expanded its port- folio of thermal materials by intro- ducing its 1400SL gap filler. An evo- lution of thermal interface materials, the new compound combines the properties of low viscosity and high thermal conductivity. Designed to accommodate
Surface Mount Axial / Radial Custom Carrier
challenging architectures, the two-part, silicone-based, liquid gap filling material has ex - tremely low viscosity, which allows it to flow in and around tightly packed structures. The compound has a thermal con- ductivity of 1.4W/m-K. In the past, high conductivity and good flow were mutually exclu- sive; this material is an attempt to unite the two characteristics. When cured, the compound
Trays Vacuum Sealers Programming
121 Exchange Blvd Glendale Heights, IL 60139 See at ATX/MD&M West Booth 1273
is soft, allowing for absorption of coefficient of thermal expansion (CTE) stress, and provides mech - anical shock dampening for frag- ile assemblies. The material is well-suited for
multiple applications, including high power components such as FETs, industrial controllers with transient loads, and automotive electronics such as DC/DC converters for hybrid
Thermally conductive gap filling material.
Contact: Henkel Corporation, 1
Henkel Way, Rocky Hill, CT 06067 % 860-571-5100 fax: 860-571-5465 Web:
www.henkel-northamerica.co
See at ATX/MD&M West, Booth 2326
vehicles. Cured at room temperature,
and without byproducts, the 1400SL is designed to provide consistent cur- ing throughout the compound. It also can be cured more quickly at higher temperatures.
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