Micro-LED Color Conversion Patent Landscape 2026
Applied Materials leads a moderately concentrated field where the top five filers hold roughly a third of the hundred largest filers’ combined output, and semiconductor-device claims dominate the technology mix. Annual filings have grown substantially over the multi-year window, with the field still in a growth stage, though recent data points are understated by publication lag.
Applied Materials leads a field with a clear top tier and active mid-tier challengers
Applied Materials holds the largest position in Micro-LED color conversion with 55 patent families, placing it well ahead of Lumileds LLC at 29 and X Display Co Tech Ltd at 23. The ranking reflects a field where one equipment-maker incumbent has built a commanding lead while photonics specialists and display start-ups populate the tier below.
The top five filers — Applied Materials, Lumileds LLC, X Display Co Tech Ltd, ELUX Inc, and Lumileds Singapore — together account for 34% of the combined output of the hundred largest filers. That share indicates a moderately concentrated structure: no single player controls the field, yet the gap between the top applicant and the rest is substantial.
| # | Applicant | Patent families | Share |
|---|---|---|---|
| 1 | Applied Materials Inc | 55 | |
| 2 | Lumileds LLC | 29 | |
| 3 | X Display Co Technology Ltd | 23 | |
| 4 | ELUX Inc | 19 | |
| 5 | Lumileds Singapore Pte Ltd | 19 | |
| 6 | Xiamen University | 17 | |
| 7 | Sakai Display Products Corporation | 12 | |
| 8 | VueReal Inc | 11 | |
| 9 | Intel Corporation | 10 | |
| 10 | AMS Osram International GmbH | 9 |
| # | Applicant | Patent families | Share |
|---|---|---|---|
| 11 | Magna Mirrors of America Inc | 8 | |
| 12 | Plessey Semiconductors Ltd | 8 | |
| 13 | Tectus Corporation | 7 | |
| 14 | LG Electronics Inc | 7 | |
| 15 | RealD Spark LLC | 6 | |
| 16 | Mindu Innovation Lab | 6 | |
| 17 | Jade Bird Display (Shanghai) Ltd | 6 | |
| 18 | PixelDisplay Inc | 6 | |
| 19 | Merck Patent GmbH | 6 | |
| 20 | X Celeprint Limited | 5 |
Applied Materials’ lead signals that deposition and process-equipment expertise has become a primary vector for IP capture in this space. Lumileds’ split presence across two entities (LLC and Singapore) underscores the multinational nature of leading filers’ IP strategies. Mid-tier entrants such as Xiamen University and Sakai Display Products indicate that academic and panel-maker perspectives are also actively contributing.
Patent publication typically lags filing by 18–24 months, so activity in the most recent period is understated; current rankings should be read as a floor, not a ceiling, for recent entrants. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
Filings have grown strongly on a multi-year basis; semiconductor-device IP dominates the technology mix
The annual trend chart maps filing volume from 2017 onward, while the technology-composition chart breaks activity across IPC classes. Together they reveal a field that expanded rapidly from 2017 and is now spreading into adjacent optical and materials classes.
Annual filing trend
Filings rose sharply from 14 families in 2017 to a peak around 2022–2023 at 78 families per year, with 73 recorded in 2024. The 2025–2026 figures are substantially understated by the 18–24 month publication lag and should not be read as a slowdown. The lifecycle evidence classifies this field as Growth, consistent with the 78% recent-window expansion.
↗ Hover for values · click a bar to ask EurekaTechnology composition
H01L (Semiconductor devices) accounts for the large majority of IPC records, reflecting the fundamentally device-level nature of color-conversion IP. Display control circuits (G09G), light-emitting semiconductor devices (H10H), optical elements (G02B), and optical control/modulation (G02F) each contribute a smaller but meaningful share, indicating that system-level and optical integration themes are beginning to attract protection alongside core device work. Materials classes (C09K, H05B) represent a further layer of activity around phosphors and quantum-dot converters.
↗ 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.
Enhanced quantum dot color conversion layer fabric…
A pixel herein includes a color panel, a light emitting diode (LED) panel, and an adhesive layer disposed between the color panel and the LED panel. The color panel includes a transparent layer, a plurality of sub-pixel isolation structures, and a plurality of black matrix structures disposed between the plurality of sub-pixel isolation structures and the… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | Micro assembled LED displays and lighting elements | 260 |
| 2 | Method and apparatus of a multi-modal illumination… | 146 |
| 3 | Micro assembled LED displays and lighting elements | 114 |
| 4 | Micro assembled LED displays and lighting elements | 114 |
| 5 | Micro assembled LED displays and lighting elements | 112 |
| 6 | Semiconductor LED Display Devices | 102 |
| 7 | Micro assembled LED displays and lighting elements | 102 |
| 8 | Micro assembled LED displays and lighting elements | 100 |
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
Four structural dimensions — maturity, concentration, collaboration, and geography — shape where R&D effort is likely to yield freedom-to-operate and where crowding already limits it.
Growth stage: filings expanding on a multi-year basis
The lifecycle evidence classifies Micro-LED color conversion as a Growth field, with a 78% increase in the recent filing window. Annual volume has reached a high plateau around 2022–2023 and the most recent data points are understated by publication lag, so the field has not peaked in any confirmed sense. New entrants are still gaining meaningful footholds, as the momentum data for Applied Materials, Xiamen University, VueReal, and AMS Osram — all flagged as new entrants in the recent window — confirms.
Growth stageModerate concentration: one clear leader, competitive mid-tier
Applied Materials’ 55-family position is roughly double the next-ranked filer, creating a notable lead without constituting a monopoly. The top five filers hold 34% of the hundred largest filers’ total, leaving meaningful space for challengers. Mid-tier applicants from display panels (Sakai Display Products), AR/wearables (Tectus Corp), and materials science (Merck Patent GmbH) indicate that differentiated technical angles can still yield competitive IP positions.
Moderate concentrationLimited co-filing so far; two active co-applicant pairs identified
Two co-filing relationships appear in the evidence: Xiamen University and its Shenzhen Research Institute have collaborated on one joint family, and LG Electronics and LG Display have done likewise. Both pairings reflect internal or closely affiliated relationships rather than cross-industry alliances, suggesting that open collaborative R&D in this field remains nascent. Entrants seeking partnership IP strategies may find the landscape relatively open for consortium-style filings.
Early collaborationUS leads; China is the second-largest jurisdiction and rising
The United States is the primary protection market with 199 patent records, followed by China with 110 and WIPO PCT filings at 59. Europe (EPO) holds 35 records and Taiwan 17. The strong US lead reflects where the largest equipment and photonics players are headquartered, while China’s volume signals active domestic R&D and market-protection strategies among panel makers and university spinouts. PCT filings indicate that at least some applicants are preserving broad international priority.
US-China bipolarGo 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 |
|---|---|---|
| Xiamen University | Xiamen University Shenzhen Research Institute | 1 |
| LG Electronics Inc | LG Display Co Ltd | 1 |
Co-filing pairs, ranked by the number of jointly-filed patent families.
Applied Materials and Lumileds dominate with complementary technical emphases
Applied Materials leads on process and assembly claims; Lumileds follows with a closely matched device-level portfolio. Both players’ recent momentum reinforces their positions at the top of the ranking.
Applied Materials Inc
Applied Materials holds 55 patent families, the largest position in the corpus. Its technology emphasis concentrates on H01L 25 (multi-component semiconductor assemblies) and H01L 33 (LED devices), with a secondary position in H01L 27. Its recent-window filing momentum is classified as a new entrant surge, indicating that the bulk of its portfolio has been built rapidly in the current growth phase rather than accumulated over decades. This combination of volume, device-level depth, and rapid accumulation makes it the field-defining incumbent.
families: 55Lumileds LLC
Lumileds LLC holds 29 patent families and has posted a recent-window growth rate of +115%, the strongest momentum of any established filer in the ranking. Its technical focus mirrors Applied Materials’ — H01L 25 and H01L 33 with an H01L 27 secondary — but its separate Singapore entity (Lumileds Singapore Pte Ltd, 19 families) extends its effective footprint. The combined Lumileds group is the closest challenger to Applied Materials and is closing the gap on a trajectory basis.
families: 29| Applicant | Recent (3 yrs) | Trend |
|---|---|---|
| Applied Materials Inc | 52 | ▲ new entrant |
| Lumileds LLC | 28 | ▲ +115% |
| ELUX Inc | 8 | ▼ -27% |
| Xiamen University | 15 | ▲ new entrant |
| VueReal Inc | 6 | ▲ new entrant |
| Intel Corporation | 2 | ▲ new entrant |
| LG Electronics Inc | 1 | ▲ new entrant |
| AMS Osram International GmbH | 8 | ▲ new entrant |
Under-served branches adjacent to the dominant semiconductor-device core
Several IPC classes adjacent to the dominant H01L core have relatively low patent counts relative to their technical relevance to color conversion. These are observations of sparsity; they warrant further investigation before being treated as validated entry points.
G02B · Optical elements & systems
G02B (Optical elements & systems) accounts for 38 patent records — roughly 5% of the technology distribution — despite its direct relevance to beam-shaping, micro-lens arrays, and wavelength-selective optics that are integral to practical color conversion in display pixels. The sparsity relative to H01L suggests that optical integration of color-conversion layers remains under-protected. An entrant with expertise in precision micro-optics or diffractive elements could potentially file in a less crowded sub-space, though freedom-to-operate analysis against existing H01L families would be a necessary first step.
Search this in Eureka →C09K · Materials for misc. applications
C09K (Materials for miscellaneous applications, including luminescent materials and phosphors) holds 29 patent records — approximately 4% of the distribution — even though quantum-dot and phosphor material selection is a core determinant of color-conversion efficiency and spectral purity. AMS Osram International is notable as one of the few applicants with C09K focus (C09K 11). This branch may offer entry opportunities for materials science players or chemical companies not yet active in the LED-device space, provided they can establish clear novelty over existing phosphor and quantum-dot IP.
Search this in Eureka →How leading filers differ by technology route across IPC sub-classes
Route coverage across the main technology branches in the current evidence set.
| Player | H01L 33 · Semiconductor devices | H01L 25 · Semiconductor devices | H01L 27 · Semiconductor devices | G09G 3 · Display control circuits | G02F 1 · Optical control & modulation |
|---|---|---|---|---|---|
| Applied Materials Inc | Strong · 44 | Strong · 47 | Emerging · 9 | Absent | Absent |
| Lumileds LLC | Strong · 38 | Strong · 38 | Moderate · 8 | Emerging · 1 | Absent |
| X Celeprint Limited | Strong · 21 | Strong · 22 | Moderate · 10 | Strong · 12 | Strong · 20 |
| ELUX Inc | Strong · 18 | Strong · 19 | Absent | Absent | Absent |
| Xiamen University | Strong · 16 | Absent | Moderate · 8 | Absent | Emerging · 1 |
| Sakai Display Products Corporation | Strong · 12 | Absent | Strong · 9 | Absent | Absent |
| VueReal Inc | Strong · 9 | Strong · 6 | Absent | Strong · 6 | Absent |
Frequently asked questions
The evidence captures 423 patent families in scope for Micro-LED color conversion across global jurisdictions.
Applied Materials Inc leads with 55 patent families, ahead of Lumileds LLC at 29 and X Display Co Tech Ltd at 23.
The lifecycle evidence classifies the field as Growth, with a 78% increase in the recent filing window. Annual volume reached a high point around 2022–2023 and the most recent data points are understated by publication lag, so no confirmed slowdown is indicated.
The United States leads with 199 patent records, followed by China at 110, WIPO PCT at 59, and Europe (EPO) at 35. Taiwan and Japan hold smaller but notable positions.
H01L (Semiconductor devices) dominates the technology composition. Adjacent branches including G02B (Optical elements), C09K (Luminescent materials), G02F (Optical control), and G09G (Display control circuits) are comparatively sparse and may represent under-served areas worth monitoring.
Co-filing activity is limited in the current evidence. Two pairs appear: Xiamen University with its Shenzhen Research Institute, and LG Electronics with LG Display. Both are closely affiliated pairings rather than cross-industry alliances, suggesting that broad consortia-style collaboration remains uncommon in this field.
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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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