Flexible OLED Substrate Patents: Who Leads, Where Filings Stalled 2026
- Filing peaked at 24 records in 2017 and had fallen to single digits by the midpoint year (2022 = 2), a pattern consistent with claim space being staked out early rather than expanding.
- No assignee shows recent-year momentum every tracked assignee, including the largest filers, logged zero filings in the latest year — momentum has shifted to whichever entity resumes filing first.
- United States and China dominate receiving offices 46 and 23 records respectively, with WIPO PCT filings (12) suggesting a smaller group is still pursuing multi-jurisdiction protection.
Filing growth compares 2021 (1 records) with 2024 (2) — a three-year span. 2024 is the most recent year we treat as complete: publication lags filing by roughly 18 months, so 2025 onwards are still filling in and any growth rate that ends there would understate the field. Top-5 share is the combined record count of the five largest assignees divided by all 89 records in scope (CR5), not by the ranked leaders only.
What this dataset covers
This landscape tracks patent families at the intersection of flexible or foldable OLED devices and flexible substrate materials — polyimide substrates, colorless polyimide, ultra-thin glass — captured through IPC classes covering organic semiconductors (H10K77), aromatic polyimide compositions (C08L79/08) and foldable-display device structures (H10K59/12). The scope is narrow by design: it isolates substrate-level claims rather than the broader OLED display literature.
The 89 families span 2015 through the 2026 cutoff, with publication naturally lagging filing by around 18 months, so the most recent one or two years understate real activity. The composition data shows the technology sits mostly inside organic semiconductor and general semiconductor device classifications, with a smaller but consistent presence in polymer chemistry classes tied to the substrate material itself.
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Filing trend and technology composition
Two views of the same 89-family dataset: how filing volume has moved year over year, and which IPC subclasses carry the claim density.
A front-loaded filing curve
Filings peaked at 24 in 2017 and declined toward the dataset midpoint, where 2022 recorded just 2. That shape points to an early land-grab on substrate and encapsulation claims rather than a technology still being actively opened up. The 2025-2026 figures should be read as provisional given publication lag.
Concentration in H10K and H01L
H10K (organic semiconductors) appears in 83 of 89 records and H01L (semiconductor devices generally) in 73, confirming this is fundamentally a device-structure landscape. The smaller counts in C08G, C08J and C08L (6-7 records each) mark where substrate polymer chemistry claims sit apart from device claims, and G09F (11) and H05K (7) show adjacent display-assembly and circuit-integration filings.
Shares are the percentage of the 89 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Flexible OLED Flexible Substrate with Eureka
This page is one run against one query. Ask Eureka your own question about flexible oled flexible substrate and every answer comes back with the patent numbers behind it.
Try EurekaMost-cited prior art in this space
Flexible OLED display device and manufacturing method thereof
The present invention provides a flexible OLED display device and a manufacturing method thereof. The OLED display device includes a flexible substrate and a flexible packaging lid opposite to the flexible substrate, a TFT layer formed on the flexible substrate, an OLED thin-film device formed on the TFT layer, a passivation layer formed on the OLED thin-film device and enclosing the OLED thin-film device, and an organic packaging film arranged on the side of the flexible packaging lid that is close to the flexible substrate to bond the flexible packaging structure.Filed by Shenzhen China Star Optoelectronics Technology Co., Ltd., 2016-11-24.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | CN106206962A | 柔性有机发光二极管显示装置 | 35 |
| 2 | CN103426904A | 一种柔性有机发光二极管显示器及其制备方法 | 35 |
| 3 | CN107680994A | 一种柔性OLED显示面板及其制备方法 | 32 |
| 4 | CN106024839A | 折叠式OLED显示器 | 28 |
| 5 | US20170155082A1 | Encapsulating Structure of Flexible OLED Device And Flexible Display Device | 28 |
| 6 | CN104538557A | 柔性OLED显示器件及其制造方法 | 28 |
| 7 | CN109494241A | 柔性OLED显示面板及其制备方法 | 18 |
| 8 | US20160351852A1 | Flexible Organic Light Emitting Diode Display Device | 18 |
| 9 | US20190173057A1 | Flexible Organic Light-Emitting Diode Display | 17 |
| 10 | CN109021234A | 一种高玻璃化转变温度与高耐热的热固型聚酰亚胺及制备方法 | 17 |
Citation counts reflect influence within the searched corpus and skew toward older filings; they are not a measure of current commercial relevance.
Patent titles are shown in the language they were filed in, not translated, so that each record stays verifiable against the original filing — a translated title will not match in Eureka or in any national register. Each row carries its publication number; clicking a row searches Eureka by that number.
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Browse MCP servers →What the numbers mean for a filing decision
Three findings that shape where new claims can realistically land.
The land-grab already happened
Filing volume dropped from 24 in the 2017 peak to 2 at the 2022 midpoint. That trajectory is typical of a substrate-and-encapsulation claim space that got staked out early rather than one still being contested. New entrants should expect dense prior art on core substrate-and-TFT-layer structures rather than open ground.
Protection concentrates in two markets
United States and China together account for the large majority of receiving-office activity, with WIPO PCT filings (12) trailing behind. Europe, India and South Korea each show single-digit counts, which suggests filers are protecting manufacturing and primary sales markets rather than pursuing broad multi-jurisdiction coverage.
Device structure, not just materials
H10K (organic semiconductors) and H01L (semiconductor devices) dominate the classification mix, while polymer-specific classes (C08G, C08J, C08L) each sit at 6-7 records. Substrate material chemistry is a minority share of this landscape even though it defines the search scope, meaning device-integration claims are the denser thicket.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to flexible oled flexible substrate, with the prior art for and against each one.
Who is active, and who has gone quiet
The assignee set is led by Chinese display manufacturers alongside established Korean and Japanese names, but recent-year filing has stopped across the board.
No one is currently filing
Every assignee tracked for recent-year momentum, from the largest Chinese display makers to established Korean and Japanese firms, shows zero filings in the latest year. Given publication lag this may partly reflect filings not yet published, but the flat trend line since 2022 suggests genuine slowdown rather than a reporting artifact alone.
Collaboration is limited and internal
The strongest co-assignee link in the dataset connects two entities under the same corporate group (Wuhan China Star Optoelectronics Technology and TCL China Star Optoelectronics Technology), at two shared families. There is no evidence in this dataset of substantial cross-company joint filing in this niche.
A regional manufacturing cluster
The named assignees cluster around Chinese display manufacturers, a Korean panel maker, and Japanese display and materials firms, consistent with the receiving-office data showing the US and China as the dominant filing destinations. This is a supply-chain-driven landscape rather than a dispersed research field.
| Assignee | Recent year | YoY |
|---|---|---|
| Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. | 0 | — |
| Sakai Display Products Corporation | 0 | — |
| Wuhan China Star Optoelectronics Technology Co., Ltd. | 0 | — |
| LG Display Co., Ltd. | 0 | — |
| TCL China Star Optoelectronics Technology Co., Ltd. | 0 | — |
| Universal Display Corporation | 0 | — |
| Zhejiang Foster New Materials Research Institute Co., Ltd. | 0 | — |
| Oculla Corporation | 0 | — |
Where to take this analysis
The dataset points to specific next steps depending on whether the goal is freedom-to-operate, sourcing new claim territory, or tracking a competitor.
Run a freedom-to-operate check on substrate-TFT interfaces
With 83 of 89 records touching H10K and 73 touching H01L, any new filing on substrate-to-TFT integration should be checked against this dense core before drafting claims.
Explore in Eureka →Map the quiet assignees' full portfolios
Zero recent-year filings across every tracked assignee does not mean abandonment; verify whether activity has moved to unpublished applications or a related IPC class.
Explore in Eureka →Test claim language in the under-claimed branches
Colorless polyimide formulation and hinge-zone encapsulation show thinner IPC representation than the core device classes, making them a reasonable starting point for new claim drafting.
Explore in Eureka →Common questions about flexible OLED substrate patents
The assignee ranking in this dataset is led by Chinese display manufacturers, alongside established Korean and Japanese firms with long OLED manufacturing histories. Rather than a single dominant holder, the field shows several active filers with comparable family counts, plus a long tail of smaller or single-filing entrants. Checking the ranking table directly is more reliable than any single summary, since positions can shift as new families publish.
Filing volume peaked in 2017 at 24 records and had fallen to 2 by the 2022 midpoint, with every tracked assignee showing zero filings in the latest year. Publication lag of roughly 18 months means the most recent one or two years will always look thinner than they eventually turn out to be, but the multi-year decline predates that lag window. The pattern is more consistent with a maturing claim space than with an emerging one.
Both terms appear in the search scope as flexible substrate materials for OLED devices, and the classification data shows the broader device structure (H10K, H01L) carries far more claim density than the polymer-specific classes (C08G, C08J, C08L) that would cover substrate material chemistry specifically. This suggests most patents in this set claim the device architecture built on a flexible substrate rather than the substrate material formulation itself, leaving room to differentiate on materials-level claims.
The United States leads with 46 records, followed by China at 23, WIPO PCT filings at 12, and smaller counts in Europe, India and South Korea. This concentration suggests filers are prioritizing protection in their primary manufacturing and sales markets over broad multi-jurisdiction filing strategies. A filer targeting a market outside the US or China should check whether equivalent protection exists locally, since coverage there is comparatively thin.
This filing from Shenzhen China Star Optoelectronics Technology describes a flexible OLED display device with a flexible substrate, an opposing flexible packaging lid, a TFT layer, an OLED thin-film device, a passivation layer, and an organic packaging film bonding the packaging structure. It is a structural claim over a specific layer stack and bonding arrangement, not a claim over flexible OLED substrates generally. Designs using different passivation or bonding approaches, or a different layer order, would need a separate freedom-to-operate check but are not automatically blocked by this filing alone.
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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.
Machine translation. Assignee and organisation names originally recorded in Chinese, Japanese or Korean have been rendered into English by an AI translation step so that the tables stay readable. These renderings are best-effort and may not match a company’s registered English name; the original name is what the underlying patent record carries, and it is what any Eureka query launched from this page uses.