QLED Emissive Layer Patent Snapshot 2026
The QLED emissive layer patent corpus is extremely small at this query scope, with only three patent families on record spread across three distinct filers — no single applicant has established a dominant position. All activity is concentrated in 2024–2025, signalling that formal patent protection in this specific sub-field is nascent rather than mature.
Three independent filers share a minimally staked field
At this query scope, three patent families have been identified, held in equal measure by Jiujiang University, Fuzhou University, and Narasaraopeta Engineering College — one patent family each. No corporate or industrial applicant appears in the top-ranked group.
The top five filers account for 100% of the ranked applicants visible in this query’ combined total, but with each holder at parity, there is no meaningful tier gap between a leader and challengers. Concentration is complete only because the corpus itself is tiny.
| # | Applicant | Patent families | Share |
|---|---|---|---|
| 1 | Jiujiang University | 1 | |
| 2 | Fuzhou University | 1 | |
| 3 | Narasaraopeta Engineering College | 1 |
The absence of industrial assignees and the academic character of all three filers suggests that this precise sub-field has not yet attracted sustained corporate R&D investment at a patentable, published level within this search scope.
Activity from 2024–2025 may be under-counted given standard publication lag; the true scope of recent filings could be larger than currently visible. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
All filing activity compressed into 2024–2025; organic-semiconductor IPC dominates
The annual trend and technology-branch charts together reveal a field that generated zero recorded filings from 2017 through 2023 before producing two families in 2024 and one in 2025. The IPC distribution reflects a mix of device-physics and display-systems classifications.
Annual filing trend
No families appear before 2024 in this corpus. The two 2024 entries and one 2025 entry represent the entirety of the dataset; the 2025 figure is subject to publication lag and likely understates actual filings made in that year.
↗ Hover for values · click a bar to ask EurekaTechnology composition
H10K (organic semiconductors / OLED-type devices) leads with two records, followed by single records each in C09K (luminescent materials), G02F (optical control and modulation), G09G (display control circuits), H04N (pictorial communication / video), and H10H (light-emitting semiconductor devices). The spread across device, materials, and system-level IPC classes reflects the interdisciplinary nature of the three filings.
↗ 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.
Quantum dot LED display for improved visual perfor…
We are proposing a new Quantum Dot LED (QLED) display technology which can bridge the gap between visual performance and power efficiency of the current display systems. It helps enhances color reproduction, accuracy, brightness levels, and contrast ratios beyond what traditional LED backlighting systems alone can provide, contributing to a more rich and… (excerpt from the patent abstract)
Open this patent in Eureka →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.
Assignee snapshot from the current evidence set
The applicants below are visible in this query result. Because the evidence set is relatively small, read this section as a directional snapshot rather than a full competitive ranking.
Jiujiang University
Jiujiang University holds 1 patent family focused on luminescent materials (C09K 11, C09K 113) and light-emitting semiconductor devices (H10H 20) — a materials-and-device emphasis that distinguishes it from the system-level focus of the other filers. Momentum data for this applicant is not separately detailed in the evidence.
families: 1Fuzhou University
Fuzhou University holds 1 patent family, classified under H10K 50 and H10K 71 (organic semiconductor / OLED-type device fabrication and processing). Its trend is flagged as a new entrant, indicating its filing falls entirely within the most recent tracking window.
families: 1Frequently asked questions
Three patent families are on record in this corpus, filed by three separate institutions — one family each.
Jiujiang University, Fuzhou University, and Narasaraopeta Engineering College each hold one patent family, placing them in equal first position. All three are academic or educational institutions; no industrial applicants appear in the current ranking.
Two patent records are filed in China and one in India. No filings are recorded in the US, Europe, Japan, or Korea within this corpus.
H10K (organic semiconductors / OLED-type devices) appears in two records. C09K, G02F, G09G, H04N, and H10H each appear in one record, reflecting a spread across materials, device physics, and display-system classifications.
No families appear in this corpus before 2024. Two families were filed in 2024 and one in 2025. The 2025 figure may be understated due to standard patent publication lag.
No co-filing relationships are recorded in the collaboration dataset for this corpus. Each of the three institutions has filed independently.
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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.
Nothing on this page constitutes an exhaustive prior-art, novelty, freedom-to-operate, or validity search, nor does it constitute legal, financial, investment, or professional advice, and it should not be relied upon as such. Any patent, commercial, or strategic decision should be verified independently and reviewed with qualified patent, legal, and domain professionals. PatSnap makes no warranties, express or implied, as to the accuracy, completeness, or fitness for any particular purpose of the information presented.