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Bright Opportunities(HKTDC Electronics, Vol 02,2007)

LED Indicators


Optosupply Int'l Ltd specialises in LED lamps and its range includes a screw-based and a super flux model
Today's hi-tech world would not be quite the same without a glowing LED, and Hong Kong manufacturers provide the best indication yet that they have the most eye-catching products for all manner of equipment and appliances.

Among them is five-year-old Optosupply Int'l Ltd, which offers a full range of LEDs including ultraviolet, white and infrared versions to its major OEM and ODM customers in Japan, the EU, the US and India.

"Buyers nowadays are very discerning, always looking for more advanced models with better performance ratings," says the firm's assistant marketing manager Daisy Tsai.

"Fortunately," she adds, "we have a gifted and dedicated R&D team that continues to explore innovative applications for LED components to improve upon their performances."

Tsai reveals that the team, comprising some 10 engineers, has achieved this by deploying non-imaging optic techniques, including ray tracing and LED-light-source optical modelling.

"Our most powerful models are in our Commercial Power Series, Premium Power Series and Deluxe Power Series, which are used mainly in traffic lights and LED panels," she says. "However, our Super Flux LED, in demand mostly by makers of automobiles, and our 5mm Pink LED that has more general application, are our best sellers."

Optosupply operates a 5,000-square-metre, 300-worker factory in Shenzhen on the Chinese mainland. The plant is IS0 9001-certified and RoHS-compliant and equipped with a Quality Engineering Centre with three laboratories performing a wide array of reliability tests.

"To ensure the delivery of high-quality products, all our production processes take place in Class 10K clean rooms with temperature, humidity and ESD controls," Tsai remarks.

Utilising chips from Taiwan and the US, Optosupply's fully-automated production lines turn out some 60 million units of LEDs monthly, many of which are shipped under the Optosupply brand name. Delivery takes 10-14 days from confirmation of order and the company has a flexible minimum order policy.

Another supplier, 1982-established COTCO Int'l Ltd, echoes the importance of innovation, which empowers the company to serve its global clientele.

"All these years we have devoted our efforts toward developing low-cost, high-efficiency LED lighting, offering users the ultimate in design flexibility without sacrificing performance," assures managing director Richard Sy.

Among the company's successful innovations is its patented, Dorado High Brightness LED, which previously won the Technological Achievement Certificate of Merit, Hong Kong Awards for Industries 2005.

"This design has the smallest LED footprint in the market, and provides optical designers with a high-lumen, low- cost solution for producing compact products with optimum performance," says Sy.

The mini Dorado can be applied widely in automotive and traffic light scenarios, as an interior and exterior design element, in entertainment situations, or as decorative and landscape lighting in addition to tools such as PDAs.

"We have extensive experience in the development and manufacturing of High Brightness (HB) LEDs and work with a global network of strategic partners that adhere to the highest standards in trend-setting technology," continues Sy.

So much so, in fact, that in 2005 the firm became one of the first in Asia to obtain a licence from US-based Cree Inc to manu-facture white LEDs.

"The white LED is considered to be the leading contender in solid-state lighting technology, and is expected to eventually replace the traditional light bulb," Sy claims.

With a monthly average output of some 100 million units of advanced LED packages in red, amber, blue, green and white, COTCO operates a 15,000-square-metre, 2,000-worker factory in Guangdong Province on the Chinese mainland. The plant is ISO 9001-, ISO/TS 16949- and ISO 14001-certified and RoHS-compliant.

"Our minimum quantity depends on the types of LED being ordered," says Chan, "while delivery is decided by the availability of the relevant chips that we import from the US."

Meanwhile, the R&D expertise of Wah Wang Holdings (HK) Co Ltd has also been instrumental in helping the firm broaden its range of LEDs since its establishment in 1999.

"We used to produce only lower-end LEDs when we first started out," says assistant marketing manager Tony To. "But now we have diversified and our focus is our high-power models that perform different functions according to their multi-chip design configuration."

To notes that besides experimenting with original LED designs, the firm's R&D team also places equal emphasis on trying to improve the strength and quality of various prototypes.

"This goal is equally shared by our quality control department, which exercises stringent control to monitor the quality of our products. It is both our unique design and reputed quality which win us many loyal customers," he claims.

Processing chips imported from Taiwan, Japan and the US, Wah Hang produces some 50 million LEDs monthly at its 80,000-square-foot, 300-worker factory in Shenzhen. The manufacturing facility is ISO 9001- and EN 60825-certified and RoHS-compliant.

The firm can usually accomplish deliveries 10-14 days after confirmation of order. "Our major customers are in the US, Europe and the Chinese mainland," To says. "They use our LEDs in garden lights, table lamps, in toys, and in the gifts and premiums sector. Our most popular items are the 0.5W, 1W and 3W power LEDs."

The outlook appears bright for Hong Kong LED manufacturers as they continue to dazzle world buyers with quality products.


Featured Suppliers

COTCO Int'l Ltd
Photonics Centre
Hong Kong Science Park
Sha Tin, New Territories
Hong Kong
Tel: 852-2485-5192
Fax: 852-2422-2737
Web: www.cotco.com

Ling Tin Capacitor Ltd
Flat T, 4/F
Haribest Ind Bldg
45-47 Au Pui Wan St
Fo Tan, New Territories
Hong Kong
Tel: 852-2708-9981
Fax: 852-2729-7362
Web: www.cyctech.cn

Merchant Corp Ltd
Unit U, 10/F, Blk 3
Camelpaint Bldg
60 Hoi Yuen Rd
Kwun Tong, Kowloon
Hong Kong
Tel: 852-2757-3363
Fax: 852-2756-3728
Web: www.merchant.com.hk

Optosupply Int'l Ltd
Unit 202
Wah Yiu Ind Centre
30-32 Au Pui Wan St
Fo Tan, New Territories
Hong Kong
Tel: 852-2790-5099
Fax: 852-2342-9833
Web: www.optosupply.com

Wah Wang Holdings (HK) Co Ltd
Unit 8, 8/F
Nanyang Plaza
57 Hung To Rd
Kwun Tong, Kowloon
Hong Kong
Tel: 852-2512-9939
Fax: 852-2344-2398
Web: www.wahwang.com