BridgeLux - Delivering Brilliance


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Growth Potential
According to leading market research firms, the LED market is primed for a period of rapid growth – due in part to the host of burgeoning market segments and related applications, as well as widespread interest in green technologies, which shows no sign of abating anytime soon. Displaybank predicts the LED market will achieve a yearly growth rate of 18%, climbing from $3.6 billion in 2006 to $8.4 billion in 2011. Strategies Unlimited is even more optimistic, forecasting a CAGR of 20% in the next five years, with a total market of $11.4 billion in 2012. High-brightness LEDs alone are expected to grow by 12% in 2008 as new applications outside the mobile phone market continue to come to light.

Bridgelux is ideally positioned to take advantage of this growth. Since its inception, the company has been on a strategic technology and product development path. Starting with its proprietary underlying technologies – epitaxy and reactors – and moving into discrete chips, packaged LEDs and soon, application-specific integrated solutions, Bridgelux is committed to advancing the state of the art in solid- state lighting.

Customer Pain Points

Cost of Light– Bridgelux’s proprietary approach is aimed at removing package and assembly cost, as well as lowering die cost by increasing usable lumens. By eliminating these key concerns, we aim to bring overall LED cost down to $0.01 per lumen—or what we more commonly refer to as our penny-per-lumen vision.
Quality – Consistent color quality, matched to the lighting application, has been a challenge with previous LED incarnations. Bridgelux’s proprietary enabling technology, array approach and strategic product roadmap are all focused on continually improving LED light quality without sacrificing cost or manufacturing advantages.
Color Consistency – With discrete multi-LED assemblies, each lamp produced has a different color. Employing them in this way is not viable or cost-effective for mass-device applications. Given that, we’re focused on delivering tighter control of color binning—improving overall color consistency and manufacturability.
Color rendering index – The color rendering index (CRI) describes how well a certain set of standard colors are reproduced when illuminated by a particular light source, typically an incandescent bulb. Our innovative LED arrays deliver an optimal CRI, ensuring compliance for high-efficiency lighting applications employing its products.
Thermal management – To reach the lumen levels required for general illumination, many LED chips or lamps need to be combined in arrays. Bridgelux has developed a small-footprint, multi-chip LED array to achieve these goals at optimal thermal levels.
Environmental impact – Solid-state LED lighting systems are superior to incandescent bulbs and fluorescent tubes as LEDs are directed light sources. LED lighting systems contain no mercury or other hazardous substances, eliminating the environmental challenges assocated with CFLs’ use and disposal.

Applications
Customers use Bridgelux InGaN (indium gallium nitride) power-LED chips to replace traditional bulb technologies with solid-state products that provide a powerful and energy-efficient source of blue, green, or white light. Our chips are currently found in a host of applications, including back-lighting units and camera flash for mobile appliances, signage, automotive and various general lighting products.

Bridgelux is committed to seizing the opportunities afforded by emerging high-growth markets such as display backlighting, camera flash, architectural lighting, task lighting, commercial and other general lighting applications. Our application-specific lighting solutions are highly customizable, meeting customers’ needs far better than standard off-the-shelf products, yet manufacturable in production quantities

At Bridgelux, our knowledge of GaN epitaxial growth processes, device structures, chip designs, and market expectations has enabled us to grow quickly into a leader in the high-power LED industry. Our commitment to advanced R&D has yielded our proprietary underlying epitaxy technology and manufacturing process, which together, create the high-quality foundation for our advanced LED chips and arrays.

Epitaxy
High-power devices require a highly reliable epitaxy structure and robust chip design compared to traditional small GaN chips because the illumination markets served require long lumen maintenance under severe operating conditions with high current density and thermal stress. Bridgelux’s proprietary epitaxy manufacturing processes were developed to improve the internal and external quantum efficiency of LED materials, thereby enhancing the quality, efficiency and cost-effectiveness of our LED devices.

Reactors
The performance of today’s LEDs is limited by their internal quantum efficiency. At Bridgelux, we’ve designed our own proprietary MOCVD reactors to grow the highest quality InGaN layers. These custom reactors enable epitaxial growth under conditions most favorable for obtaining high internal quantum efficiencies. This MOCVD capability is unique in the LED industry and sets Bridgelux apart from others in the solid-state illumination marketplace.

Chip Design
At Bridgelux, we design our own state-of-the-art power chips using computer-guided design methods. Our chips are designed with the end lighting solution in mind. They provide for high light-extraction efficiency, good heat dissipation—at the lowest possible cost. That way we can offer the highest lumen/dollar solutions to our customers.

Bridgelux is well positioned to address a number of burgeoning markets through its product portfolio, which includes power chips, packaged LEDs and LED arrays, as well as new solutions that will enable further adoption of solid state technology throughout a range of consumer, communications and industrial applications.

Power Chips
MKO
In production today, our MKO Series devices deliver brightness of up to 70 lumens per watt (lm/W) – a whopping 70% increase over the previous product family – due to their improved light extraction.

Download PDF datasheets

BXCA
Currently in alpha development and slated to begin sampling in Q2, the BXCA Series builds upon on the benefits of MKO, boosting light output another 20%, with white performance of up to 85 lm/W at 350mA.

Arrays
Bridgelux has a variety of white and Blue LED arrays currently in development, with market release planned for Q2 2008. Offerings include:
• 1x15, 5W linear array
• 4x3, 5W rectangular array
• 4x5, 20W rectangular array

Future Solutions
Bridgelux is committed to remaining a driving force in solid-state lighting, pushing LED technology to the next level with our innovative solutions. Keep checking back for new information – as in the second half of 2008, we expect to make an exciting announcement that will signal Bridgelux’s transition to the next generation of solid-state lighting.

4. IP Prowess

Bridgelux has an extensive, world-class portfolio of IP focused on enabling the future of LEDs. As we continue to research and evolve highly manufacturable, cost-effective LED solutions, we will strictly enforce IP regulations in order to protect our arsenal of technology patents. With more than 50 patents filed and more on the way– Bridgelux’s broad IP portfolio spans across myriad areas including high-power LEDs, LED chip design, epitaxial structure and chemical vapor deposition (CVD) reactors.