a global leader in LED lighting products

Sharp says that using its new X-Gen Panel with advanced pixel control, light leakage is minimized and more light is allowed to pass through for higher peak brightness. Excellent color reproduction is also generated by a 1080/24P signal used for reproducing film frame rates as experienced in the cinema. It also comes with a Fine Motion Advanced Technology for 100/120Hz frame rate conversion and a fast pixel response time of 4ms.

Lighting Science Group Corporation, a global leader in LED lighting products, will preview its next generation line of LED retrofit lamps that will be available in the fourth quarter of this year. The new line of lamps will have substantially increased light output compared to LSG's current line but will be available at about half the cost. LSG's new line of LED retrofit lamps has the potential to dramatically expand the market for LED lighting technology.

According to Zach Gibler, Chief Executive Officer of LSG, "Lighting Science is preparing to make energy efficient LED lighting available for a wider range of applications by delivering unrivaled performance for the price. Our new line of LED retrofit lamps will use approximately 80% less energy than the traditional lighting technology lamps they replace. In most applications, Lighting Science's new line of LED retrofit lamps should pay for themselves in well under one year based on energy savings alone. This rapid payback coupled with the exceptionally long life of LEDs will provide significant financial returns for customers and should result in strong market growth for these products.

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On Chip addresses both problems with these new submount offerings

A global provider of Integrated Passive Devices (IPD), last week announced the ability to provide Silicon and Ceramic Carriers or Submounts for HB LED (High Brightness Light Emitting Diode) manufacturers. With major advantages of power savings, increased life expectancy and faster response time over traditional bulbs, HB LEDs are rapidly taking over many applications such as LCD backlighting, traffic lights, automotive lighting, camera flash and even standard lighting. HB LEDs are more efficient and longer lasting than both incandescent and CFLs.

HB LEDs are predominantly built with Indium Gallium Nitride technology. LEDs using InGaN come with several design challenges such as electrostatic discharge (ESD) sensitivity and package thermal coefficient of expansion (TCE) issues. InGaN chips are generally considered Class 1 devices and in many cases, a discharge of only 10 Volts can destroy such sensitive components. In comparison, static charge of up to 30,000 Volts is not uncommon and can be generated quite easily. Studies indicate that ESD damage to electronics and associated equipment is estimated at over $10 billion annually. ESD-damaged LEDs can appear dim, dead, shorted, or have low Vf or Vr. TCE mismatch between the LED chip and the lead-frame or package is another significant reliability threat.

On Chip addresses both problems with these new submount offerings. OnChip produces silicon and ceramic submount that serves as an inter-poser between the InGaN chip and the lead-frame. Submounts reduce the TCE mismatch, while providing ESD protection via integrated zener diodes. Ceramics are ideal for High Power LEDs and On Chip offers both Aluminum Oxide and Aluminum Nitride materials. The Company also provides miniature silicon ESD diodes that can be mounted alongside the LED chips. These ESD diodes are available both as flip chips - ESD0201 and as single-wire bond chips - ESD8x8. Submounts offer optical benefits as well. These devices contain solder bumps, enabling flip chip assembly of the LED chip. This approach eliminates shadows caused by wire-bonding. Furthermore, submounts offer a reflective metal surface which help direct the light in the desired direction.

LED light source provides vivid color saturation

Visible Light Solar, CEO Dee Dennis discusses the driving factors for developing current lighting products, such as the desire to reduce kilowatt hours and embrace the idea of putting energy availability back into the grid as opposed to using it.According to Dee, lighting innovation has been stagnating for a while, but today LED lighting is changing how we view the world.Dee also gives some examples of the savings customers are experiencing.  For example one customer went from 3000 watts to 213, this customer will realize those savings for years to come due to the longevity of LEDs.

The P410M allows auto play of media files from any USB storage device without connecting to a computer and the built-in multimedia player provides instant access to music, video and picture files. Standard audio, video and PC inputs easily connect to a laptop, camcorder, or DVD player, and two stereo speakers are placed strategically on both sides to make multimedia more enjoyable. The fan emits only 32 dB, which is quieter than the hum of a refrigerator and as whisper quiet as a library.Technology and LED light source provides vivid color saturation and high contrast displays. Colors are saturated up to 140% of NTSC color gamut, ensuring colors are accurate, crisp and vibrant.

The SBM-160 is a four-chip package consisting of individually addressable red, green, blue and white LEDs that generate more than 1,500 lumens of combined white light. The product utilizes a high-performance ceramic substrate resulting in an industry-leading thermal resistance of less than 1.5 C/W. A protective window covers the LED chips that emit directly into air, allowing for proximity optics that optimize collection efficiency and eliminate unwanted color fringing.Available in an SMT package, the SBM-160 integrates seamlessly with standard SMT manufacturing processes and equipment. PhlatLight LEDs are mercury-free, highly reliable and provide a lifetime of 60,000 hours with lumen maintenance of greater than 70 percent. The SBM-160 is available for sampling now with volume shipments starting in November.

An interactive temperature slider shows the results graphically

Thermal foldback combats high temperatures LEDs can reach as a result of environmental conditions.  When LED temperatures rise above a safe threshold, the lifetime and efficacy of the LED decreases.  With the LM3424, lighting designers can program temperature and slope breakpoints within which the LEDs operate safely.  When an over-temperature condition occurs, the LM3424’s thermal foldback circuitry reduces the regulated current through the LEDs.  The reduced current dims the LED to a range programmed by the designer and the LED remains within the range until it returns to a safe operating temperature.

This method of thermal foldback maintains the lifetime and efficacy of the LED and ensures the warranty period of fixtures in applications such as automotive headlights, high bay warehouse lighting and street lighting.National’s WEBENCH LED Designer helps lighting designers identify the ideal temperature threshold or foldback break point of the LEDs.  Traditionally, resistor values are calculated by hand to identify temperature foldback breakpoints.  The WEBENCH online design environment allows the designer to easily enter the temperature foldback and slope points and then visualize the behavior of the design at different LED temperatures.  This requires no hand calculations.  An interactive temperature slider shows the results graphically.The LED driver design automatically updates with entry of temperature breakpoint requirements.

Offered in a 20-pin thermally enhanced TSSOP package, the LM3424 drives up to 18 high-brightness LEDs in series with output current above 2A in a typical application.  It contains all of the features to regulate currents based on buck, boost, SEPIC, flyback and buck-boost topologies.The LM3424 operates over a wide input range of 4.5V to 75V.  The pulse-width modulation (PWM) controller is designed for high-speed capability including an oscillator frequency range that can be synchronized up to 2.0 MHz.  Additional features include PWM and analog dimming, programmable softstart and protection features such as low-power and thermal shutdown, and cycle-by-cycle current limit.

there are new product release plans to echo the market opportunities

The OLED panel displays textual information. And the inorganic EL panel is used as a backlight source to emit light from behind a color-printed film, giving animation-like effects to the image on the poster.The OLED panel is made with a polymer OLED material. OLED devices are formed on a glass substrate by using gravure printing technology. Compared with the evaporation method, it is possible to make larger, lower-cost panels in a shorter production time, DNP said.The OLED panel measures 32 x 192mm. The drive voltage and the luminance are 12V and 100cd/m2, respectively. DNP is planning to form OLED devices on a plastic substrate for the future.Veeco received a multi-system order for tools to be shipped to YAHAM Lumileds over the next two to three quarters.

Mike Pugh, Chief Procurement Officer at YAHAM Lumileds commented, “We have selected Veeco for several reasons. Veeco’s K465 ultimately provides a high level of automation, helps us reduce manufacturing costs, and provides a flexible platform as we look to the future. Additionally, our confidence level in working with Veeco’s systems and services is very high.Spurred by an influx of orders for the 2010 World Expo Shanghai, LED maker Macroblock’s revenues surged 30% MoM to $4.26 million in August; the growth momentum is expected to extend through September. Macroblock’s third quarter revenues is expected to reach $12 million, a QoQ growth of 34%, which is far higher than the previous estimate of 10~15% growth released at the investor’s conference.

Macroblock recorded total revenues of $16.8 million in the first half of 2009, decreased by 12.4% compared to that of the same period of last year. The consolidated gross profit margin reached 42.8%. The net income was $2.1 million with EPS of $0.069.During the recent investor’s conference, Robert Chen, General Manager of Macroblock remarked that there are new product release plans to echo the market opportunities in the LED field – in addition to demand from the traditional hot season and pending orders from the first half of the year, a series events held in China, such as World Expo 2010 Shanghai, Guangzhou Asian Games 2010, and Oct. 1st China National Day, will further spur demand for LED display and architectural lighting. Macroblock’s third quarter shipment is expected to hit a historic high, and gross margin may bottom out.