GaN LED Phosphor and Color Patent Landscape 2026
GaN LED Phosphor and Color Patent Landscape in 2026
The GaN LED phosphor and color space is a small but growing field with filings concentrated among semiconductor device specialists and phosphor material chemists, led by Resonac Holdings and Toshiba. Activity is accelerating on a multi-year basis, with China and Japan as the dominant filing jurisdictions.
A fragmented field with no single dominant player yet established
Resonac Holdings Corp and KK Toshiba share the top ranking with 4 patent records each, followed closely by a cluster of applicants — including University of Science and Technology Beijing, IBM, Seoul Opto Device, GlobalFoundries, and Philips Lumileds — each recording 3 patent records.
The top five filers account for 26% of the combined total among the hundred largest filers, indicating a notably fragmented competitive structure with no single applicant commanding a decisive lead.
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 1 | Resonac Holdings Corp | 4 | |
| 2 | Toshiba Corporation | 4 | |
| 3 | UNIV OF SCI & TECH BEIJING | 3 | |
| 4 | IBM (International Business Machines Corporation) | 3 | |
| 5 | Seoul Opto Device Co Ltd | 3 | |
| 6 | GlobalFoundries Inc | 3 | |
| 7 | Philips Lumileds Lighting Company LLC | 3 | |
| 8 | ShineOn Beijing Technology | 2 | |
| 9 | Lumileds Holding BV | 2 | |
| 10 | Lumileds Singapore Pte Ltd | 2 |
| # | Applicant | Patent records | Share |
|---|---|---|---|
| 11 | Hubei University | 2 | |
| 12 | Hitachi Cable Ltd | 2 | |
| 13 | Osram Sylvania Inc | 2 | |
| 14 | TCO Co Ltd | 2 | |
| 15 | NanoSi Advanced Technologies | 2 | |
| 16 | Bridgelux Inc | 2 | |
| 17 | Wujiang Minfu Cable Accessories Factory | 2 | |
| 18 | Dongguk University Industry Academic Cooperation Foundation | 2 | |
| 19 | Dongguk University Industry Academic Cooperation Foundation | 2 | |
| 20 | Lattice Power (Jiangxi) Corp | 2 |
The presence of both established semiconductor manufacturers (Resonac, Toshiba, GlobalFoundries) and phosphor material specialists (Osram Sylvania, Philips Lumileds) alongside academic institutions (University of Science and Technology Beijing, Hubei University) signals that no single player has consolidated control over this intersection of materials chemistry and device engineering.
Activity in the most recent 18–24 months is likely under-counted due to standard patent publication lag and should not be treated as indicative of final filing volume for those years. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
Filing activity is rising on a multi-year basis, dominated by semiconductor device classifications
The annual filing trend and technology composition charts together reveal an accelerating but still nascent field where device-level IP significantly outweighs materials-chemistry coverage.
Annual filing trend
Activity was effectively absent from 2017 through 2020, with the first meaningful filings appearing in 2021. Volume has grown since, reaching a visible peak in 2024. The lifecycle evidence indicates annual filings are still rising on a multi-year basis, with a 150% recent growth rate; 2025 and 2026 counts are understated by publication lag and should not be read as a slowdown.
↗ Hover for values · click a bar to ask EurekaTechnology composition
H01L (semiconductor devices) is overwhelmingly dominant in the technology mix, followed by C09K (materials for miscellaneous applications, covering phosphor chemistry) as the second-largest branch. Organic semiconductor classifications (H10K) and nanotechnology applications (B82Y) are present but represent a much smaller share, pointing to areas where coverage is thin relative to their potential relevance.
↗ Hover for values · click a bar to ask EurekaHighly cited patent families surfaced by the query
Citation-heavy patent families returned by the query. Use this section as citation context, not as a curated list of the most topic-specific patents.
BULK InGaN COLOR CONVERSION FOR INTEGRATED CIRCUIT…
An LED source includes a CMOS layer, a GaN LED layer, and a bulk In<sub>x</sub>Ga<sub>1-x</sub>N color conversion layer. The CMOS layer contains CMOS driver circuits. The GaN LED layer is attached to the CMOS layer. It is patterned into an array of LEDs connected to and driven by the driver circuits. The bulk In<sub>x</sub>Ga<sub>1-x</sub>N color conversion… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | Hybrid organic-inorganic semiconductor light emitt… | 178 |
| 2 | LED with Particles in Encapsulant for Increased Li… | 176 |
| 3 | Light-emitting diode and its manufacturing method | 114 |
| 4 | Hybrid organic-inorganic semiconductor light emitt… | 86 |
| 5 | LED with particles in encapsulant for increased li… | 73 |
| 6 | Light Emitting Diode of a Nanorod Array Structure … | 56 |
| 7 | Light emitting diode of a nanorod array structure … | 47 |
| 8 | Light emitting diode | 47 |
Ranked by total forward citations. Citation counts favour older and broadly cited patent families, and broad or adjacent patents may appear when they match the search scope. Treat this section as citation context, not as a curated list of the most topic-specific patents. Some patent titles may be shown in their original, non-English language where an accurate translation could not be guaranteed.
What the competitive structure means for R&D investment decisions
The combination of a growth lifecycle, fragmented ownership, and a strong materials-chemistry undercurrent creates a landscape where well-targeted entries can still establish meaningful positions.
Early growth stage with accelerating momentum
The lifecycle is classified as Growth, with annual filings still rising and a 150% recent growth rate. The field only generated meaningful activity from 2021 onward, meaning the patent thicket is not yet dense and early movers can still carve out substantial claim space. The 2024 peak in annual volume reflects genuine acceleration, not a plateau.
Growth stageFragmented top tier — no entrenched leader
With the top five filers holding only 26% of the combined total among the hundred largest filers, ownership is spread across a wide set of actors. The tie at the top between Resonac Holdings and Toshiba, and the near-parity of the next five applicants, means no single entity has a locking position. This structure favors new entrants who can focus on under-covered sub-domains.
Low concentrationCo-filing activity centers on Philips-Lumileds lineage and Korean academic partnerships
The most active co-filing relationship is between Philips Lumileds Lighting Company LLC and Koninklijke Philips NV, with 3 joint filings, reflecting coordinated IP strategy across the Philips lighting family. A separate collaboration between KIM HWA MOK and Dongguk University (2 joint filings) and another between Hubei University and Ningbo Meicheng Biotechnology (2 joint filings) illustrate academic-industry co-development patterns, particularly in phosphor materials.
Ecosystem formingChina and Japan lead filing jurisdictions; US and Korea are secondary
China is the leading filing jurisdiction by patent records, followed by Japan and the United States. South Korea and WIPO PCT filings are also present, with smaller coverage in Europe, Taiwan, and Australia. The China-Japan dominance reflects the manufacturing centers for GaN LED components and phosphor materials, while PCT and EPO filings signal international protection strategies by the larger players.
Asia-led geographyGo beyond the landscape: Eureka’s TRIZ Solution agent breaks down an R&D problem and returns patented concept solutions, each with a technical approach and cited patent & literature evidence.
| Applicant | Collaborator | Co-filings |
|---|---|---|
| Philips Lumileds Lighting Company LLC | Koninklijke Philips NV | 3 |
| KIM HWA MOK | DONGKUK UNIV | 2 |
| Hubei University | Ningbo Meicheng Biotechnology Co Ltd | 2 |
| KIM HWA MOK | Seoul Opto Device Co Ltd | 1 |
Co-filing pairs, ranked by the number of jointly-filed patent families.
Resonac and Toshiba lead on device IP; Osram Sylvania and Philips anchor phosphor chemistry
The top applicants split broadly into semiconductor device specialists and phosphor material chemists, with a small number of academic entrants beginning to appear.
Resonac Holdings Corp
Resonac Holdings Corp (formerly Showa Denko) holds 4 patent records, all concentrated in H01L 33 semiconductor device classifications, reflecting a device-engineering rather than phosphor-chemistry emphasis. No momentum trend data is available for Resonac in the evidence, so trajectory cannot be characterized further.
patent records: 4University of Science and Technology Beijing
University of Science and Technology Beijing holds 3 patent records and is the only applicant with a confirmed momentum signal — flagged as a new entrant with all recent filings concentrated in C09K 11 (phosphor and luminescent materials) and B82Y nanotechnology classifications. This materials-and-nano orientation is distinct from the device-level focus of the industrial leaders, suggesting an emerging academic pipeline in nano-phosphor chemistry.
patent records: 3| Applicant | Recent (3 yrs) | Trend |
|---|---|---|
| University of Science and Technology Beijing | 3 | ▲ new entrant |
Under-served branches adjacent to the dominant semiconductor device core
Several IPC classes appear at the periphery of this corpus with low record counts relative to H01L; these are observations of relative sparsity, and their value as entry points depends on technical fit and applicant capability.
B82Y · Nanotechnology applications
Nanotechnology classifications (B82Y) appear in only 2 patent records — roughly 2% of the IPC coverage in this corpus — despite the clear relevance of quantum-dot and nanorod phosphor structures to GaN LED color tuning. The top-cited patent corpus includes LED nanorod array structures, confirming technical plausibility. University of Science and Technology Beijing is the primary current filer here; the branch remains sparse enough that an applicant with nano-phosphor synthesis expertise could establish a meaningful position without immediately confronting a dense thicket.
Search this in Eureka →C08F · Addition polymers for LED encapsulants
Addition polymer classifications (C08F) appear in only 2 patent records, pointing to thin coverage of polymer encapsulant and binder chemistry — the matrix materials that disperse phosphor particles in practical LED packages. The highly cited ‘LED with Particles in Encapsulant for Increased Light Extraction’ patent family signals that encapsulant engineering is technically central to color performance, yet the patent record count in C08F remains minimal. This gap may be accessible to specialty polymer or formulation companies not yet active in this specific intersection.
Search this in Eureka →How leading applicants differ in their technology route emphasis
Strength of each leader across the main technology routes.
| Player | H01L 33 · Semiconductor devices | C09K 11 · Materials for misc. applications | H10K 99 · Organic semiconductors (OLED etc.) | H01L 51 · Semiconductor devices | B82Y 20 · Nanotechnology applications |
|---|---|---|---|---|---|
| IBM (International Business Machines Corporation) | Strong · 6 | Absent | Strong · 6 | Moderate · 3 | Absent |
| Osram Sylvania Inc | Strong · 3 | Strong · 5 | Absent | Absent | Absent |
| Philips Lumileds Lighting Company LLC | Strong · 5 | Absent | Absent | Absent | Absent |
| University of Science and Technology Beijing | Absent | Strong · 3 | Absent | Absent | Strong · 2 |
| Resonac Holdings Corp | Strong · 4 | Absent | Absent | Absent | Absent |
| Seoul Opto Device Co Ltd | Strong · 4 | Absent | Absent | Absent | Absent |
| KIM HWA MOK | Strong · 3 | Absent | Absent | Absent | Absent |
Frequently asked questions
The corpus contains 8 patent families in scope for this topic.
Resonac Holdings Corp and KK Toshiba are jointly ranked first with 4 patent records each. University of Science and Technology Beijing, IBM, Seoul Opto Device, GlobalFoundries, and Philips Lumileds Lighting Company LLC each hold 3 patent records.
China leads with 18 patent records, followed by Japan with 15, the United States with 9, and South Korea with 6. WIPO PCT, Europe (EPO), Taiwan, and Australia account for the remainder.
The field is classified as Growth stage. Annual filings were negligible before 2021 and have grown substantially since, with a 150% recent growth rate. The most recent years are under-counted due to publication lag.
H01L (semiconductor devices) is by far the most covered branch. C09K (phosphor and luminescent materials) is the second-largest. B82Y (nanotechnology), C08F (addition polymers), C01G (metal compounds), and G01N (material analysis) each appear in only 2 patent records, representing the sparsest areas.
The most active co-filing relationship is between Philips Lumileds Lighting Company LLC and Koninklijke Philips NV (3 joint filings). KIM HWA MOK and Dongguk University have 2 joint filings, and Hubei University has co-filed twice with Ningbo Meicheng Biotechnology.
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Patent data carries inherent limitations: recent filings (typically the most recent 18–24 months) are under-counted due to standard publication lag; counts may be reported at either a patent-family or a patent-record basis and are not always directly comparable; classification, applicant-name, and citation data may contain errors, duplicates, or omissions; and the underlying search query defines and constrains the scope shown. As a result, the analysis may be incomplete or inaccurate and may not reflect the full technology landscape.
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