Mini-LED Chip Patent Landscape 2026
The Mini-LED chip patent space is concentrated among Chinese academic and commercial filers, with Guangdong University of Technology holding the leading position and China accounting for the dominant share of filing activity. Annual volume has plateaued near its peak, with core semiconductor device claims saturating and adjacent optical and assembly branches remaining comparatively sparse.
Guangdong University of Technology leads a China-concentrated field
Guangdong University of Technology holds the top position with 8 patent families, followed closely by Xiamen Changelight Co. Ltd. and Nanchang Kaijie Semiconductor Technology Co. Ltd., each with 7 patent families. The top five filers collectively account for 38% of the hundred largest filers’ combined total, indicating a moderately concentrated competitive structure.
A clear tier gap separates the top three applicants — each with 7–8 patent families — from the mid-tier cluster of applicants holding 2–5 families, and a long tail of single-family holders. This tiering suggests that while no single entity holds commanding dominance, the leading positions are meaningfully differentiated from the broader field.
| # | Applicant | Patent families | Share |
|---|---|---|---|
| 1 | Guangdong University of Technology | 8 | |
| 2 | Xiamen Changelight Co. Ltd. | 7 | |
| 3 | Nanchang Kaijie Semiconductor Technology Co. Ltd. | 7 | |
| 4 | Excellence Opto Inc. | 5 | |
| 5 | Jiangxi Zhao Chi Semiconductor Co. Ltd. | 4 | |
| 6 | Shenzhen Wisdow Reaches Industrial Co. Ltd. | 3 | |
| 7 | Shenzhen Longli Technology Co. Ltd. | 3 | |
| 8 | Xiamen University | 3 | |
| 9 | Lumileds Singapore Pte. Ltd. | 2 | |
| 10 | Foshan Nationstar Semiconductor Co. Ltd. | 2 |
| # | Applicant | Patent families | Share |
|---|---|---|---|
| 11 | Jiangxi Yao Chi Technology Co. Ltd. | 2 | |
| 12 | Jucan Photoelectric Technology (Suqian) Co. Ltd. | 2 | |
| 13 | Fujian Prima Optoelectronics Co. Ltd. | 2 | |
| 14 | Jiangxi Changelight Co. Ltd. | 2 | |
| 15 | Salcomp Shenzhen Co. Ltd. | 1 | |
| 16 | Shenzhen Ruiwei Micro Semiconductor Technology Co. Ltd. | 1 | |
| 17 | Xiangneng Hualei Optoelectronics | 1 | |
| 18 | Wuhan University | 1 | |
| 19 | Shenzhen Zhaoji Optoelectronics Co. Ltd. | 1 | |
| 20 | Shenzhen Sanbum Optoelectronics Co. Ltd. | 1 |
The presence of Guangdong University of Technology and Xiamen University among the top filers signals that academic institutions are active R&D generators rather than passive observers, which tends to indicate technology transfer opportunities and licensing pathways alongside the commercial filers.
Data for approximately the last 18–24 months is subject to publication lag and likely understates recent filing activity; the apparent low counts for 2024 and 2025 should not be interpreted as reduced investment. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
Filing volume plateaued after 2021 peak; semiconductor device claims dominate the technology mix
The annual trend and technology composition charts together show a field that has matured rapidly since 2019 but is now consolidating around a core IPC class, with peripheral branches receiving comparatively little attention.
Annual filing trend
Filings grew sharply from 2019 through a 2021 peak, then stabilized at a similar level through 2023. Counts for 2024 and 2025 are suppressed by publication lag and do not reflect actual filing pace; the field is still expanding on a multi-year basis (recent-window growth positive), though annual volume has eased from its 2021 peak.
↗ Hover for values · click a bar to ask EurekaTechnology composition
H01L (semiconductor devices) accounts for virtually all records, confirming that chip-level device architecture and fabrication dominate the protected IP. Adjacent branches — G02F (optical control and modulation), H05K (printed circuits and assemblies), and G09F (displaying and signs) — each hold only a handful of records, pointing to under-served technical areas adjacent to the core.
↗ 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.
Ejector pin sliding on membrane-based device and m…
An ejector pin sliding on membrane-based device and method for mass transfer of mini light-emitting diodes (Mini-LEDs) are provided. The device includes a gantry transverse beam. The gantry transverse beam is provided with an ejector pin base, and the ejector pin base is configured to move along the gantry transverse beam. The ejector pin base is fixedly… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | 发光二极管灯板、其防护封装方法、背光模组及显示装置 | 14 |
| 2 | 划膜刺晶式Mini-LED巨量转移装置及其使用方法 | 8 |
| 3 | 一种红光mini-LED芯片及制作方法 | 6 |
| 4 | 一种大发光角度倒装Mini-LED芯片及其制备方法 | 5 |
| 5 | 具有分区单元格拼接的mini-LED结构及生产工艺 | 5 |
| 6 | 一种Mini-LED芯片及其制备方法 | 4 |
| 7 | 一种mini-LED芯片及制备方法 | 4 |
| 8 | 一种汽车照明用Mini-LED芯片阵列及其制造方法 | 4 |
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 plateauing filing pace, concentrated ownership, and sparse adjacent branches defines where differentiation is still achievable and where crowding is the greater risk.
Field approaching saturation in core device architecture
The lifecycle stage is classified as Maturity, driven by annual filings that have plateaued near their 2021 peak. The 14% recent-window growth indicates the field is not in decline, but the pace of new core-claim generation has stabilized. Entrants targeting H01L-centered chip structure claims face a crowded landscape; differentiation is more feasible in adjacent branches.
Mature · plateauingModerate concentration with a meaningful tier gap at the top
The top five filers hold 38% of the hundred largest filers’ combined total, a level that reflects moderate concentration rather than oligopoly. The leading trio — Guangdong University of Technology, Xiamen Changelight, and Nanchang Kaijie Semiconductor — each hold 7–8 patent families, creating a defensible but not insurmountable lead. Mid-tier players with 2–5 families have room to accumulate positions in under-served branches.
Moderate concentrationLimited co-filing detected; one active pairing identified
The evidence shows a single recorded co-applicant relationship: Jiangxi Zhao Chi Semiconductor Co. Ltd. and Jiangxi Yao Chi Technology Co. Ltd. have jointly filed one family. This pairing likely reflects a supply-chain or regional industrial cluster relationship rather than a broad open-innovation network. The overall co-filing ecosystem in Mini-LED chip technology is nascent, suggesting that coalition-building could be a differentiating strategic move.
Nascent ecosystemChina filing dominance; limited Western coverage creates freedom-to-operate considerations
China accounts for 57 of the patent records filed, far ahead of the United States (10 records) and Europe via EPO (7 records). Taiwan holds 2 records. WIPO PCT coverage is minimal (1 record), meaning many families in this corpus may lack broad international protection. This creates potential freedom-to-operate in markets outside China for technologies that have not been filed via PCT or directly into Western offices.
China-dominantGo 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 |
|---|---|---|
| Jiangxi Zhao Chi Semiconductor Co. Ltd. | Jiangxi Yao Chi Technology Co. Ltd. | 1 |
Co-filing pairs, ranked by the number of jointly-filed patent families.
Guangdong University of Technology and Xiamen Changelight lead on volume; Nanchang Kaijie competes on device structure depth
The two leading positions are held by an academic institution and a commercial LED manufacturer, reflecting the dual-track nature of this field where university R&D and industrial application coexist at the top of the ranking.
Guangdong University of Technology
The leading filer with 8 patent families, Guangdong University of Technology concentrates its activity across H10P, H01L 21 (semiconductor device processing), and H01L 33 (LED-specific semiconductor devices). Its momentum is classified as a new entrant in the recent window, indicating this position has been built rapidly. As an academic institution, it is a likely source of licensing opportunities and technology transfer in chip fabrication process innovations.
8 patent familiesXiamen Changelight Co. Ltd.
Xiamen Changelight Co. Ltd. holds 7 patent families with a technology emphasis squarely on H01L 33 (LED semiconductor devices) and secondarily on H01L 25 (assemblies of semiconductor devices), pointing to a focus on both chip-level and module-level integration. Its momentum is also classified as a new entrant in the recent window, suggesting an accelerating rather than established filing cadence. As a commercial LED manufacturer, its portfolio has more direct product-application linkage than the academic leader.
7 patent families| Applicant | Recent (3 yrs) | Trend |
|---|---|---|
| Guangdong University of Technology | 6 | ▲ new entrant |
| Xiamen Changelight Co. Ltd. | 5 | ▲ new entrant |
| Nanchang Kaijie Semiconductor Technology Co. Ltd. | 4 | ▲ new entrant |
| Jiangxi Zhao Chi Semiconductor Co. Ltd. | 4 | ▲ new entrant |
| Xiamen University | 1 | ▲ new entrant |
| Lumileds LLC | 1 | ▲ new entrant |
| Jucan Photoelectric Technology (Suqian) Co. Ltd. | 2 | ▲ new entrant |
Optical modulation, phosphor materials, and PCB assembly remain under-served relative to the core
Against a corpus dominated by H01L semiconductor device claims, several adjacent IPC branches show sparse coverage, suggesting that technical problems in optical integration, substrate assembly, and luminescent materials are not yet heavily contested in this specific Mini-LED chip context.
G02F · Optical control and modulation
With only 4 records and a 3% share, optical control and modulation claims — covering elements such as waveguides, light-shaping optics, and beam modulation integrated with Mini-LED chips — are sparsely represented. Given that display manufacturers require tight optical uniformity from Mini-LED backlight arrays, this branch has plausible technical value. An entry path exists through IP focused on on-chip or near-chip optical structuring that reduces the need for external diffuser layers.
Search this in Eureka →H05K · Printed circuits and assemblies
H05K (printed circuits and assemblies) holds only 3 records at a 3% share, despite Mini-LED chip arrays requiring advanced substrate and interconnect solutions for mass transfer and thermal management. This represents an adjacent area with clear engineering relevance — thermal and electrical integration at the board level is a known bottleneck for high-density Mini-LED arrays. Entry could be pursued through claims on PCB substrate designs or bonding architectures tailored to Mini-LED pitch requirements.
Search this in Eureka →How leading applicants differ by IPC technology route
Route coverage across the main technology branches in the current evidence set.
| Player | H01L 33 · Semiconductor devices | H01L 25 · Semiconductor devices | H01L 21 · Semiconductor devices | H10P 72 | H01L 27 · Semiconductor devices |
|---|---|---|---|---|---|
| Guangdong University of Technology | Strong · 6 | Moderate · 4 | Strong · 7 | Strong · 8 | Absent |
| Excellence Opto Inc. | Strong · 5 | Strong · 3 | Absent | Absent | Strong · 5 |
| Xiamen Changelight Co. Ltd. | Strong · 7 | Moderate · 2 | Absent | Absent | Emerging · 1 |
| Nanchang Kaijie Semiconductor Technology Co. Ltd. | Strong · 7 | Absent | Absent | Absent | Absent |
| Lumileds LLC | Strong · 3 | Strong · 3 | Absent | Absent | Absent |
| Shenzhen Wisdow Reaches Industrial Co. Ltd. | Strong · 3 | Strong · 3 | Absent | Absent | Absent |
| Shenzhen Longli Technology Co. Ltd. | Strong · 3 | Strong · 3 | Absent | Absent | Absent |
Frequently asked questions
The corpus analyzed contains 78 patent families. China is the lead filing jurisdiction, accounting for 57 of the patent records indexed.
Guangdong University of Technology leads with 8 patent families, followed by Xiamen Changelight Co. Ltd. and Nanchang Kaijie Semiconductor Technology Co. Ltd., each with 7 patent families.
The field shows 14% growth in the recent window, but annual filing volume has plateaued near its 2021 peak. The lifecycle stage is classified as Maturity. Note that 2024–2025 counts are suppressed by publication lag and should not be read as a decline.
H01L (semiconductor devices) accounts for virtually all records in the corpus, reflecting the focus on chip architecture and fabrication. Adjacent classes such as G02F, H05K, and C09K are each represented by only a handful of records.
China dominates with 57 patent records, well ahead of the United States at 10 records and Europe via EPO at 7 records. PCT coverage is minimal at 1 record, meaning many families may lack broad international protection outside China.
Co-filing activity is limited. The only recorded co-applicant pairing is between Jiangxi Zhao Chi Semiconductor Co. Ltd. and Jiangxi Yao Chi Technology Co. Ltd., which have one jointly filed family. The broader co-filing ecosystem in this space is nascent.
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Disclaimer. This page is generated from PatSnap Eureka data drawn from a limited snapshot of global patent and scientific-literature records, and is provided for general information and reference only.
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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