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Phosphors and QDs for LED Applications Patent Landscape
Jan.2016

leadership_patent_assignees_nitrides_oxynitrides_patents_knowmade_2016_1014991643
5 990 €

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Description

Yole LED Phosphor QD IP January 2016 Flyer

With fundamental patent expiring in the next years, how will evolve IP forces involved ?

RESHAPING THE LED PHOSPHORS INDUSTRY AT A TURNING POINT

The last 2 years have seen some major changes on the LED market with important boom of lighting applications and the growth of Chinese LED industry. On the phosphor front, nitrides are the dominant red phosphors for high CRI lighting and wide color gamut displays. Suppliers have proliferated despite IP restrictions. But a new material, Mn4+ doped PFS (potassium fluorosilicate) developed by GE and already manufactured by Denka, Nichia, GE and others could challenge the dominance of nitrides in display applications thanks to its extremely narrow band. Quantum Dots (QDs) have also emerged as highly credible options for displays thanks to design flexibility (adjustable emission wavelength) and very narrow band emission. YAG is the best yellow phosphor for white LEDs. But its use is restricted by strong IP owned by Nichia. Silicates are the best substitute but still lag slightly in performance. With critical IP to start expiring from 2017 and prices significantly lower than any alternative, we expect YAG to become ubiquitous by the end of the decade and silicate to decrease significantly unless breakthrough in performance and cost are achieved.

Phosphor IP is a major force in LEDs and contributed heavily in shaping its industry with more than 70 litigation cases involving around 50 companies. The LED industry keeps bracing for the expiration of many fundamental patents. This could help relative newcomers such as Chinese LED packaging companies expand their market overseas. In the meantime, Everlight has been accentuating its effort to invalidate most of Nichia's fundamental patents and Osram and Nichia have continued strictly enforcing their IP via multiple litigations while the BOSE consortium has expended its licensing program for Silicate phosphors to various Chinese LED packaging companies.

QD for LED Applications key patents Knowmade 2016

More than 7,510 patented inventions related to Phosphors & QDs have been published worldwide up to September 2015. The first patents were published by Japanese companies (Mitsubishi, Toshiba, Nichia, NIMS, Panasonic…). But patenting activity really took off over the 2003-2007 period after development of first high brightness GaN-based blue LED from Nichia. A second wave of patent publications started in 2010, mainly originating from AOT, Samsung and Stanley Electric. The increase in patent publications focused on Phosphor Composition follows same trend although more slowly. Chinese LED phosphor players such as Sunfor Light have recently entered the LED Phosphors & QDs IP arena.

Overall, patent filings peaked in 2013, and have been slowing down since. Meanwhile, granted patents worldwide should increase after successful processing of the numerous pending patent applications. We expect patent filings to continue driven by innovation in nitride phosphors or new compositions such as Mn4+ activated phosphors or QDs that haven’t reached their technology maturity yet and for which adoption in commercial applications such as displays is just starting.

IDENTIFY KEY PLAYERS

More than 200 patent applicants are involved in Phosphors and QDs for LED. Most of the major LED and Phosphors manufacturers are present in the list of the top patent applicants, including Nichia, Cree, Osram, Philips, Toyoda Gosei, Samsung, LG and Seoul Semiconductor. The report provides a ranking with all major LED and phosphor manufacturers present and analysis of the relative strength of the key patent holders derived from their portfolio size, patent citations networks, countries of patents filings, current legal status of patents. Many key players are being challenged as their fundamental patents are approaching their expiration dates. To keep fending off new entrants, leading LED makers will increasingly have to rely on more recent applications, including continuations of those fundamental patents belonging to the same families.

Panasonic leads patents assignees for LED with wavelength converters and ranks 7th in patents citing specific phosphor compositions. While not usually perceived as a leading LED player, the company is very active in LED R&D, including in the development of new phosphor compositions. But its LED related portfolio extends beyond phosphor related inventions. This broad portfolio allows the company to operate relatively freely in the LED space. Similarly, Toshiba shows a strong IP related activity despite a relatively moderate revenue position within the LED industry. It remains to be seem how the company’s recent decision to exit the white LED business will impact its overall LED lighting strategy.

Litigations licensing focus ONSRAM Knowmade 2016

PATENTED TECHNOLOGY AND IP STRATEGY

The 7,510+ patented inventions selected for this study have been manually categorized by technology segment. The existing Phosphor & QDs for LED applications IP include LEDs using phosphors or QDs, phosphors compositions, QDs and LEDs with remote configuration patents. A special focus is provided on phosphors compositions (in particular for nitrides and new compositions) , QDs, free-Cd QDs and Chinese players. Nichia and Osram lead in garnet compositions. Both had fundamental patents filed in 1996 regarding YAG, TAG and multiple other garnet phosphors. They are followed by Philips and Mitsubishi. Some other players are leading the Silicates/Orthosilicates segment. However, the strongest composition patents in this category of materials belongs to the BOSE consortium including Litec/Merck, LWB, Toyoda Gosei. The Nitride / Oxynitride sections are dominated by Japanese players. Others big companies also own some IP on nitride compositions. Beside, other assignees on the list mention the use of Nitrides with LEDs but, for the most, haven’t developed compositions themselves. Among the phosphor makers, six companies are the most active in developing other compositions. In China, the most active companies/universities researching phosphor compositions are mostly focusing on Nitrides but also on new compositions such as Europium activated Molybdates, Vanadates, Chlorine Borates, Tungstates and Antimonates.

Leadership patent assignees nitrides oxynitrides patents Knowmade 2016

IP LITIGATION ANALYSIS AND KEY PATENTS

IP will keep playing a considerable role in this industry restructuring. In our analysis, we have identified various key players: Nichia, Cree, Osram, Philips, Seoul Semiconductor, Mitsubishi, …. Thus, we provide a complete and deep understanding of IP litigation history including litigated patents families and most cited patent families in litigations. The analysis include litigation strategy and licensing agreement focused on Garnet, Silicates and Nitrides phosphors compositions. For each key players, litigations and licensing are examined with granted fundamental patents near expiration dates. We have identified key patents which could provide significant returns to their owners, in terms of market share, freedom of exploitation and additional revenue stream from royalties.

USEFUL PATENT DATABASE (7,500+ patent families)

Our report also includes an Excel database containing all of the analyzed patents (7,500+ patent families). This database allows for multi-criteria searches and includes patent publication number, hyperlinks to the original documents, priority date, title, abstract, patent assignees, technological segments and legal status for each member of the patent family.

 

Table of contents

Introduction 4



> Scope of the Report
Key Features of the Report
Objectives of the Report
Methodology
Search Strategy
Segmentation of Patents
Technological Segmentation

 

Executive Summary 21



Status of the LED Industry 43



Phosphor Market Overview 53



Quantum Dots Market Overview 65



Phosphors & QDs IP Overview 76



For each segment (LED wavelength conversion, Phosphor composition, Remote phosphors, Quantum dots…):
> Time Evolution of Patent Publications
> Time Evolution of Patent Publications
> Main Patent Assignees Ranking
> Time Evolution of Patent Assignees
> Patent Assignees IP Network
> Table Technology Segments v.s. Assignees

 

Phosphor Compositions 94



For each composition (Garnets, Silicates, Nitrides, New compositions …):
> Time Evolution of Patent Publications
> Table Phosphor Compositions v.s. Assignees
> Main Patent Assignees Ranking
> Time Evolution of Patent Assignees
> Patent Assignees IP Network
> Degree of Specialization of Patent Assignees

 

Focus on Nitides/Oxynitrides 112



Focus on New Compositions 125


 For each focus:

> Overview
> Time Evolution of Patent Publications
> Mapping of Main Current IP Holders
> Mapping of Main Current IP Applicants
> Leadership of Patent Assignees
> Impact Factor of Patent Portfolios
> Strength Index of Patent Portfolios
> IP Blocking Potential of Assignees
> Key Patent Families
> Potential Future Plaintiffs

Quantum Dots 141


> Overview
> Time Evolution of Patent Publications
> Mapping of Main Current IP Holders
> Mapping of Main Current IP Applicants
> Main Patent Assignees Ranking
> Time Evolution of Patent Assignees
> Countries of Filing for Main Patent Assignees
> Patent Assignees IP Network
> Degree of Specialization of Patent Assignees
> Leadership of Patent Assignees
> Impact Factor of Patent Portfolios
> Strength Index of Patent Portfolios
> IP Blocking Potential of Assignees
> Key Patent Families
> Potential Future Plaintiffs

 

Focus on QD Compositions (Cd v.s. Cd-free) 161


> Overview
> Time Evolution of Patent Publications
> Main Patent Assignees Ranking
> Time Evolution of Patent Assignees

 

Focus on China 168


 

> Overview

For each segment (LED wavelength conversion, Phosphor composition, Remote phosphors, Quantum dots…):

> Time Evolution of Patent Publications
> Main Patent Assignees Ranking
> Time Evolution of Patent Assignees

 

Litigations & Licensing Landscape 180


 

> Chronology of Major Events
> Litigation Plaintiffs and Defendants
> Patents Families Most Cited in Infringement Litigations
> Litigated Patent Families
> Litigation – Time Histogram
> Litigation date vs. Priority Date
> Litigation Strategies
> Phosphor Patent Licensing Activity: 2001-2015 Chronology
> Licensing: Historical Events (1996-2012)
> Licensing: Recent Events (2013-2015)
> Licensing: Focus on Silicates and the BOSE Consortium
> Licensing: Focus on Nitrides
> Litigation and Licensing: Focus on Nichia, Osram, Cree, Philips, Seoul Semiconductor, Intematix, Mitsubishi chemicals, Toyoda Gosei.
> Invalidation Attempts
> Conclusion

 

Focus on The Everlight – Nichia Patent War 226


 

Expiring Patents Analysis 233


 

Conclusions 241


 

About the authors

ABOUT KNOWMADE
Knowmade is a Technology Intelligence and IP Strategy consulting company. We provide Patent Search, Patent Analysis, Patent Valuation, Patent Landscape and Technology Scouting. Our service offer consists of standard reports, custom studies & on-demand tracking, strategy consulting and training. We combine information search services, scientific expertise, powerful analytics and proprietary methodologies for analyzing patents and scientific information. With a solid focus on Microelectronics, Compound Semiconductors, Optoelectronics, MEMS & Sensors and Advanced Packaging, Knowmade supports research laboratories, industrial companies and investors in their business development. http://www.knowmade.fr

 

ABOUT YOLE DEVELOPPEMENT
Founded in 1998, Yole Développement has grown to become a group of companies providing marketing, technology and strategy consulting, media in addition to corporate finance services. With a strong focus on emerging applications using silicon and/or micro manufacturing, Yole Développement group has expanded to include more than 50 associates worldwide covering MEMS, Compound Semiconductors, LED, Image Sensors, Optoelectronics, Microfluidics & Medical, Photovoltaics, Advanced Packaging, Nanomaterials and Power Electronics. The group supports industrial companies, investors and R&D organizations worldwide to help them understand markets and follow technology trends to develop their business. http://www.yole.fr

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

KEY FEATURES OF THE REPORT

  • IP trends including time evolution and countries of filing

  • What has happened since the last report (2013 edition)

  • Phosphor & QDs LED market data and forecasts

  • Ranking of main patent applicants

  • Joint developments and IP collaboration network of main patent applicants

  • Key patents and fundamental granted patents near expiration

  • Relative strength of main companies’ IP portfolios

  • Matrix showing patent applicants and patented technologies

  • Segmentation of patents: By technology including LEDs, Phosphor Compositions, QDs and Remote phosphors By phosphor compositions: Garnets, Silicates, Nitrides, New Compositions

  • Deep IP analysis of new trend compositions and QDs

  • Complete review and deep analysis of litigations and licensing landscape (50+ slides)

  • Analysis of IP publication of Chinese players

  • Excel database with all patents analyzed in the report (7510+ patent families), including technology segmentation

Mems

Imaging

MedTech

Compound Semi

LED

Photonics

Power Electronics