Rubicon Announces Large Diameter Patterned Sapphire Substrates

PSS with dome shape

PSS with dome shape

 

This week, Rubicon Technology announced the launch of the first commercial line of large diameter patterned sapphire substrates (PSS) in four-inch through eight-inch diameters.  The new product line provides LED chip manufacturers with a ready-made source of large diameter PSS to serve the needs of the rapidly growing LED general lighting industry.

This is doubly important since patterning helps improve both epitaxial growth and light extraction for each chip and enhances a chipmaker’s throughput and efficiency.  Rubicon announced that they have fully customizable sub-micron patterning capability with tight dimensional tolerances, within ±0.1 µm.  Rubicon offers LED chip manufacturers more usable area to maximize the number of chips per wafer due to an edge exclusion zone as small as 1 mm.  Rubicon’s patterning is available in a range of shapes including cone, dome and pyramid, and in a range of orientations.  Further customization of geometry, pattern and orientation is available too.  You can find a brochure about it on Rubicon’s web site here.

Rubicon’s president and CEO Raja Parvez pointed out the importance of large diameter patterned sapphire substrates in a news release.  “As LED-based general lighting gains worldwide adoption, large-diameter patterned sapphire substrates will become necessary to meet the demands of the rapidly growing lighting market.”

Parvez added that the company developed an unmatched technology platform that is vertically integrated from raw material through crystal growth, large diameter polished wafers, and now custom PSS in 4”, 6” and 8” diameters.  According to Parvez, vertical integration enables Rubicon to produce progressively larger sapphire products while providing customers with exceptional quality, cost control, reliability, and consistency.

For Further Reading

Rubicon Technology, Rubicon Technology Launches First Commercial Line of Large Diameter Patterned Sapphire Substrates for the LED Industry, http://bit.ly/1itVMHq

Clearlysapphire.com, LED Lighting Spotlight: Patterned Sapphire Substrates, http://blog.clearlysapphire.com/?p=390

 

LEDs Help Gravity Movie Makers Simulate Zero-Gravity

Sandra Bullock stars in the film Gravity (Warner Brothers)

Sandra Bullock stars in the film Gravity (Warner Brothers)

 

 

 

 

 

 

 

 

 

You may have seen news about the new George Clooney and Sandra Bullock movie Gravity. The movie details the story of how two shuttle astronauts deal with a shuttle accident while servicing the Hubble Space Telescope.  The movie includes stunning shots showing the actors floating in space.  One trick that the filmmakers used to simulate zero-gravity was LED lighting.

While many movies like Apollo 13 have used parabolic airplane flights to show zero gravity, the director of Gravity wanted longer shots.  The parabolic airplane flights only give you 20 to 30 seconds of weightlessness at a time, so director Alfonso Cuarón looked into alternatives.  Some scenes relied on the actors swimming underwater. Others suspended the actors from wires with puppeteers pulling strings while robots filmed from various angles.

However, the most surprising zero-gravity shot tool was a very large LED light box enclosure filled with thousands of programmable LED lights.  The lights were programmed to show scenes of Earth and space. With the actors inside the enclosure, robotic cameras captured close ups of the actors faces to simulate space.  While the actors were stationary, the light patterns were not, simulating motion and something that appeared to be weightlessness.  The nice thing about this technique was that the actors could see exactly what was happening so they could react to their visual references.  The various shots were blended into the final movie simulating zero gravity.

You can see the trailer here:  http://www.youtube.com/watch?v=OiTiKOy59o4

For Further Reading

NBC, Movie Tech: How ‘Gravity’ threw Sandra Bullock into zero gravity, http://www.nbcnews.com/science/how-gravity-threw-sandra-bullock-zero-gravity-big-screen-8C11326787

The Daily Beast, Alfonso Cuarón on the Making of His Instant Sci-Fi Classic ‘Gravity’, http://www.thedailybeast.com/articles/2013/10/03/alfonso-cuaron-on-the-making-of-his-instant-sci-fi-classic-gravity.html

The World Supports Breast Cancer Awareness in Pink 2013

LEDs make it very easy to program lighting to do just about anything you want.  October is Breast Cancer Awareness Month and as part of the movement, operators of large buildings and other landmarks are turning pink to support to the cause.  To demonstrate how ordinary buildings are supporting the cause using LEDs, here’s a list of buildings in and around Philadelphia turning pink this month. And more than 200 buildings in Chicago are turning pink this month. 

Here’s a collection of some of the most spectacular buildings and landmarks around the world in pink as well as some office buildings supporting breast cancer awareness.

Burj Al Arab, Dubai, UAE

Burj Al Arab Dubai

 

Bandra Worli Sea Link, Mumbai, India

Bandra Worli Sea Link, Mumbai, India

Bandra Worli Sea Link, Mumbai, India

 

Bosphorus Bridge, Istanbul, Turkey

Bosphorus Bridge, Istanbul, Turkey

Bosphorus Bridge, Istanbul, Turkey

The Prudential Building, “The Pru”, Boston, MA

The Prudential Building, “The Pru”, Boston, MA

The Prudential Building, “The Pru”, Boston, MA

 

The Atlantic City, NJ Skyline

The Atlantic City, NJ Skyline

The Atlantic City, NJ Skyline

 

 

 

 

 

 

 

Las Olas City Centre, Ft. Lauderdale, Florida

Las Olas City Centre, Ft. Lauderdale, Florida

 

 

 

 

 

 

 

 

 

 

 

 

The M&T Bank Headquarters, Buffalo, NY

The M&T Bank Headquarters, Buffalo, NY

The M&T Bank Headquarters, Buffalo, NY

For Further Reading

CBS Philly, List Of Buildings Going Pink In Honor Of Breast Cancer Awareness Month

http://philadelphia.cbslocal.com/2013/09/30/list-of-buildings-going-pink-in-honor-of-breast-cancer-awareness-month/

CBS Chicago, Breast Cancer Awareness Month: Over 200 Buildings Go Pink in Chicago, http://b96.cbslocal.com/2013/10/03/breast-cancer-awareness-month-over-200-buildings-go-pink-in-chicago/

General Lighting Brightens Up with LEDs

Clearlysapphire.com continues to follow the growth of LED lighting as well as sapphire and alternative substrates. This week, we’ll focus on a new report from Yole Developpement, a research firm that covers LEDs and the semiconductor industry.  Yole recently reported that the packaged LED market will grow from $13.9 billion in 2013 to $16 billion by 2018, driven mainly by general lighting and completed by display applications.  The report, Status of the LED Industry, details how LED-based general lighting has surpassed all other applications, representing nearly 39 percent of total revenue of packaged LEDs In 2012.

2013 packaged LED revenue by application.  The total market size is nearly $13B. (Source: Status of the LED Industry report, Yole Developpement, September 2013)

2013 packaged LED revenue by application. The total market size is nearly $13B. (Source: Status of the LED Industry report, Yole Developpement, September 2013)

Costs need to continue to drop to keep LED-based lighting’s momentum in the general lighting market according to the report’s author, Pars Mukish, market and technology analyst, LED for Yole Developpement.  He commented, “Cost represents the main barrier LEDs must overcome to fully compete with incumbent technologies.  Since 2010, the price of packaged LEDs have sharply decreased, which has had the consequence of decreasing the price of LED-based lighting products.”

Mukish notes that in order to maintain growth, the industry needs to continue reducing pricing.  He pointed out that while LED still has some potential for cost reduction, widespread adoption will require manufacturers to reduce costs on all components of the system such as drivers, heat sink, and PCB.

Yole also updates their reporting on the use of alternative substrates in the LED market.  This situation hasn’t changed since we last covered alternatives in these posts:  Clearlysapphire.com, Alternative Substrates – Dimming the Hype, http://blog.clearlysapphire.com/?p=496 and Clearlysapphire.com, Alternative Substrates for LEDs, http://blog.clearlysapphire.com/?p=293.

According to Yole, companies working on alternatives such as silicon and GaN still face major obstacles.  Mukish says the benefit of GaN-on-silicon LEDs depends on decreasing manufacturing cost by using cheaper 8 inch silicon substrates that can leverage fully depreciated and highly automated CMOS fabs. However, he maintains that GaN-on-silicon LEDs still suffer from low manufacturing yields and full compatibility with CMOS fab still needs to be achieved.  He added that GaN-on-GaN LEDs benefit from a lower defect density in the epitaxial layers, allowing the device to be driven at higher current levels and to use a lower number of LED devices per system.   However, he said that GaN-on-GaN LEDs suffer from low GaN substrate availability and high costs.

For Further Reading

iMicronews, Sample, State of LED Industry, SLI report,  http://www.i-micronews.com/upload/Rapports/SLI%20Sample.pdf

Compound Semiconductor, Yole: Inexpensive LED Solutions Pushing Adoption In General Lighting, http://www.compoundsemiconductor.net/csc/detail-news/id/19736834/name/Yole:-Inexpensive-LED-solutions-pushing-adoption-in-general-lighting.html

Novus Light Today, Yole Releases Status of LED Industry Report, http://www.novuslight.com/yole-releases-status-of-led-industry-report_N1675.html