New nanowire LED startups compete with Asian LED giants in the IP landscape
Nanowire LED: After 10 years of patenting activity, what's the current patent situation ?
Asian giants Samsung, Panasonic and LG are the top three patent assignees for Nanowire LED technology. Facing them are several startups including glō, Aledia and Ecospark, which between them have raised more than $150M - thus confirming their serious interest in this field. However, these newcomers face strong technological challenges. Nanowire-based LEDs were first reported in the early 2000s by Harvard University (J. American Chemical Soc., 122, 1, 188-189) and National Taiwan Normal University (Adv. Mat., 12, 10, 738). The first patent was filed in 2002 by Postech Foundation for an axial PN junction architecture. Since then, companies have shown growing interest in nanowire-based LED for improved light extraction and thermal conduction. Fundamental patents describing a nanowire-based axial LED were filed during the 2000s, with the most significant ones coming from Postech Foundation, Solidlite and LG. In the mid-2000s, Philips, Nanosys, LG and Seoul Opto Devices filed the first radial/core-shell nanowire LED patents. Current patented technologies reflect the improvements made in terms of material and junction architecture to achieve limited crystal defects and increased luminous efficiency. KnowMade’s research covers global patents published through February 2014. Patents addressing the use of nanowires in LED applications have been selected, and an analysis of the patent holders and their patented technologies is provided. This report focuses exclusively on LED and does not include patents related to the fabrication of nanowires for other applications such as solar, detectors, or laser.
More information on that report at http://www.i-micronews.com/reports/Nanowire-LED-Patent-Investigation/14/437/
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A New Type of Report Providing a Clear Link between IP Situation and Market Evolutions
More than describing the status of the IP situation, this report provides a missing link between patentedtechnological solutions and market, technological and business trends
– Knowmade has developed a unique methodology to define a technical segmentation of patent landscape and identifykey patents.
– By combining their technical knowledge, business understanding and patent search, Yole and Knowmade are able toprovide unique analysis and added value in this report.
– In-depth technological analysis of patents provided in this report will lead to understanding of strategic decisions andpositioning of key players within the value chain.
• This report provides a detailed picture of the patent landscape for LED with nanowires. Only patentsrelated to nanowires for LED applications were considered: nanowires used as PN junction (“activedevices”) and nanowires used for light extraction (“passive devices”). This report does not include patentsrelated to the fabrication of nanowires or for other applications (solar, detectors, laser …).
• More than 350 patent families relevant to the scope of this report have been analyzed. Those have beenmanually segmented by type and organized in various technology segments as described below.
• Market data from Yole Développement are also provided to add some context regarding business trendsand metrics.
• The report provides essential patent data, technology analysis and forecast for LED Nanowires.
• It identifies more than 100 patent holders of LED Nanowires related intellectual property. It provides in-depth analysis of key technology segments and key players including:
– Time evolution of patent publications and countries of patent filings
– Current legal status of patents
– Ranking of main patent applicants
– Joint developments and IP collaboration network of main patent applicants
– Key patents
– Granted patents near expiration
– Relative strength of main companies IP portfolio
– Overview of patent litigations
– Matrix applicants/technology issues for more than 30 companies
• A special focus is provided on key issues and approaches:
– Materials: GaN, ZnO, GaAs, InP …
– Type of technology: active device (active layers), passive device (light extraction enhancement)
– Type of PN junction: axial, radial (core-shell), axial/radial
• The “LED Nanowires IP” profiles of 6 companies is presented, with key patents, technological keyapproach, and partnerships.
• The report also provides an extensive Excel database with all patents analyzed in the report withtechnology segmentation. This database allows multi-criteria searches:
– Patent information
- Patent publication number
- Hyperlinks to the original documents
- Priority date
- Title
- Abstract
- Patent Assignees
- Technological segments
- Legal status for each member of the patent family
– Technological segments-Deposition Method
-Substrate
-Material
-PN Junction
• This report does not provide any insight analyses or counsel regarding legal aspects or the validity of anyindividual patent: Knowmade and Yole Développement are research firms that provide market and technicalanalysis and opinions. The research, technical analysis and/or work contained herein is not a legal opinionand should not be construed as such.
Company 1 XX 47 20 10 10 5 5Company 2 XX 30 9Company 3 XX 15 4 2 2Company 4 XX 11 7 4 3 1Company 5 XX 7 1Company 6 XX 6 5Company 7 XX 7 6 6Company 8 XX 5 1 1Company 9 XX 4Company 10 XX 3 4 4 4 4Company 11 XX 4Company 12 XX 4Company 13 XX 4 4 4Company 14 XX 3Company 15 XX 3 3 2 2 2Company 16 XX 2 3 2 1Company 17 XX 3 1Company 18 XX 3Company 19 XX 1 2Company 20 XX 1 2Company 21 XX 2 3 1Company 22 XX 3 1 1 1
History of LED IndustryLED Industry is Entering its 3rd Growth Cycle
1. Growth of the LED industry came initially from smallLCD displays and keypad backlighting applications.
2. And was driven forward by the LCD displayapplication.
– LED TV was expected to be the LED industry driver for2011, but the reality was quite different due to lowersales of LCD TVs, lower than expected adoption rate ofLED and lower number of LEDs per TV set. Thissituation, mixed with the entry of several new Asianplayers, created a climate of overcapacity, pricepressure, and strong competition.
– Packaged LED volumes were about 30% lower thanexpected and revenue shrank due to strong ASPpressure.
3. In 2012, most companies have started to move to thenew “El Dorado” of the LED business: GeneralLighting, which represents the next killer application.In 2013, LED technology has really spread beyondgeneral lighting with the LED penetration rate > 4% insome applications. However, to enable massiveadoption of the technology, LED-products still requirea cost decrease.
• Several academic players are also working on nanowire technology:
– Gwangju Institute of Science and Technology - GIST (KR)
– University of California Los Angeles - UCLA (USA)
– University of Illinois (USA)
– …
Several pure Nanowire players developing LED have emerged.
All of them are spins off from academic institutions.
Company name Country Material Substrate NW fabrication technique
Aledia XXXXXX XXXXXXX Si MOCVD
glōSweden /
USAIII-V nanowires Sapphire, Si XXXXXX
XXXXX Taiwan GaN nanowires XXXXX MOCVD
Ecospark Sweden ZnO nanowires XXXXX XXXXX
XXXXXX XXXXX GaAs nanowires Graphene MBE
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