OLED Large-Area Gen-Fab Manufacturing Patent Landscape
The OLED large-area and Gen-fab manufacturing patent space is dominated by a small cluster of Chinese panel makers and established Korean and Western display firms, with TCL China Star Optoelectronics leading by family count. Activity expanded sharply through 2021 and has plateaued near that peak, signalling a maturing field with selective new entrants still pushing fresh filings.
TCL China Star leads a concentrated field of panel makers and material specialists
TCL China Star Optoelectronics holds the top position with 14 patent families, followed closely by BOE Technology Group with 12 and Samsung Display with 10. The top five filers together account for 42% of the hundred largest filers’ combined total, confirming a moderately concentrated competitive structure.
A clear two-tier gap separates the top three applicants from the mid-tier: BOE subsidiaries, Novaled, Universal Display, and LG Display each hold 5–7 patent families, while the remaining ranked filers hold two or three each. This tier structure suggests the leading panel makers have built meaningful positional depth relative to peers.
| # | Applicant | Patent families | Share |
|---|---|---|---|
| 1 | Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd. | 14 | |
| 2 | BOE Technology Group Co., Ltd. | 12 | |
| 3 | Samsung Display Co., Ltd. | 10 | |
| 4 | Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. | 7 | |
| 5 | Novaled GmbH | 5 | |
| 6 | Universal Display Corporation | 5 | |
| 7 | LG Display Co., Ltd. | 5 | |
| 8 | HKC Corporation Ltd. | 4 | |
| 9 | Beijing BOE Technology Development Co., Ltd. | 3 | |
| 10 | Xian Smart Materials Co., Ltd. | 3 |
| # | Applicant | Patent families | Share |
|---|---|---|---|
| 11 | Applied Materials, Inc. | 3 | |
| 12 | Kateeva Inc. | 3 | |
| 13 | Amtran Technology Co., Ltd. | 2 | |
| 14 | Zhejiang Brilliant Optoelectronic Technology Co., Ltd. | 2 | |
| 15 | Honor Device Co., Ltd. | 2 | |
| 16 | YAS Co., Ltd. | 2 | |
| 17 | Chengdu BOE Optoelectronics Technology Co., Ltd. | 2 | |
| 18 | Advanide Holdings Pte. Ltd. | 2 | |
| 19 | Credoxys GmbH | 2 | |
| 20 | Xinmei Fontana Holding (Hong Kong) Ltd. | 2 |
The leaders’ positions reflect vertically integrated strategies — dominant activity across OLED device architecture, manufacturing process, and materials — while specialist firms such as Novaled and Kateeva occupy narrower but strategically defensible niches in emissive materials and inkjet deposition equipment respectively.
Filings from approximately 2024–2026 are likely under-counted due to standard patent publication lag; the apparent softening in those years should not be read as a structural decline. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.
Filing activity peaked in 2021 and has plateaued; H10K dominates the technology mix
Two charts together reveal both the temporal rhythm of competitive investment and the technology classes that absorb it. The filing trend highlights when and how fast the field mobilised; the IPC composition shows where the IP is technically anchored.
Annual filing trend
Filings grew from a low base in 2017–2019, surged to a peak of 24 families in 2021, then eased to recurring annual volumes in the 10–20 range through 2023–2024. The multi-year window still reflects positive growth of 21% relative to the prior period. Years 2024–2026 are subject to publication lag and should be treated as provisional, not as evidence of a new decline.
↗ Hover for values · click a bar to ask EurekaTechnology composition
H10K (Organic semiconductors / OLED) accounts for the overwhelming majority of patent records at 106, dwarfing every adjacent class. The next-largest branches — H01L Semiconductor devices (8), C09K Materials (6), C09D Coatings and inks (5), and C23C Surface deposition (5) — each represent only 3–5% of records, underscoring how tightly the corpus is concentrated on core OLED device and process IP.
↗ 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.
OLED display panel and manufacturing method thereof
An organic light-emitting diode (OLED) display panel and manufacturing method thereof are provided. A light convergence layer is disposed between an encapsulation layer and a color filter layer in the OLED display panel, and a light divergence layer is disposed between the color filter layer and a cover plate. Through converging light by the light… (excerpt from the patent abstract)
| # | Patent | Citations |
|---|---|---|
| 1 | Active-matrix OLED display | 3 |
| 2 | Organic light-emitting display device, manufacturi… | 3 |
| 3 | Display, electronic device, and display fabricatio… | 3 |
| 4 | OLED display panel | 2 |
| 5 | Polyurethane-based adhesive composition, surface p… | 2 |
| 6 | Integrated optoelectronic devices for lighting and… | 2 |
| 7 | Pixel configurations for high resolution OVJP prin… | 2 |
| 8 | OLED display panel, manufacturing method thereof, … | 2 |
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
Reading the corpus across maturity, concentration, collaboration, and geography surfaces four distinct strategic signals for teams evaluating where to direct resources in large-area OLED manufacturing.
Field is at plateau — core OLED device IP is crowded
The lifecycle stage is Maturity: annual filings have plateaued near their 2021 peak. The dominant H10K class is well-occupied by established panel makers, meaning incremental device-level filings face a crowded prior-art landscape. New entrants are still appearing, but differentiation increasingly requires process innovation, materials chemistry, or equipment-level claims rather than pure device architecture.
Lifecycle: MaturityTop three applicants hold a commanding positional lead
TCL China Star (14 families), BOE (12), and Samsung Display (10) together set the pace. The top five filers represent 42% of the hundred largest filers’ combined total. This concentration means any new entrant or mid-tier challenger faces a significant catch-up challenge in core OLED process IP, but the mid-tier fragmentation below rank five also signals that no single firm has locked out the adjacent chemistry and deposition spaces.
High concentrationCo-filing is largely intra-group, with limited cross-firm partnering
The most active co-applicant pair is BOE Technology Group with its subsidiary Chengdu BOE Optoelectronics, sharing 2 joint families. BOE Technology Group also filed jointly with Yunnan Chuangshijie Optoelectronics once, and Wuhan China Star filed jointly with a related Wuhan entity once. All observed collaboration is intra-corporate or within affiliated entities — no cross-firm or university-industry co-filing is visible in this corpus, leaving ecosystem partnership as an open strategic path.
Intra-group onlyUS is the primary protection market; China filing appears underweight
The United States leads jurisdiction coverage with 76 patent records, followed by Europe (EPO) with 14 and China with 7. Given that the majority of leading applicants are Chinese panel makers, the low China-jurisdiction count is notable and may reflect PCT or US-first filing strategies. South Korea and Germany each register 3 records. Teams seeking freedom-to-operate in the Chinese domestic market should verify coverage gaps independently.
US-centric protectionGo 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 |
|---|---|---|
| BOE Technology Group Co., Ltd. | Chengdu BOE Optoelectronics Technology Co., Ltd. | 2 |
| BOE Technology Group Co., Ltd. | Yunnan Chuangshijie Optoelectronics Technology Co., Ltd. | 1 |
| Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. | Wuhan China Star Optoelectronics Technology Co., Ltd. | 1 |
Co-filing pairs, ranked by the number of jointly-filed patent families.
TCL China Star and BOE lead on volume; Samsung Display is the fastest-accelerating challenger
The top two applicants are both Chinese panel conglomerates with deep, multi-subsidiary filing networks. Samsung Display enters the recent window as a new entrant by momentum measure, suggesting a deliberate expansion of its large-area OLED IP portfolio.
TCL China Star Optoelectronics
TCL China Star Optoelectronics (Shenzhen) holds 14 patent families — the largest position in this corpus. Technology focus is concentrated on H10K 59 (OLED display panels, 13 records) and H10K 71 (manufacturing processes, 4 records), reflecting a manufacturing-process-forward strategy. Momentum is marked as a new entrant in the recent filing window, indicating that its leadership position was built in the most recent measurement period and continues to build.
families: 14Samsung Display
Samsung Display holds 10 patent families and enters the recent window as a new entrant by momentum measure, suggesting an accelerating strategic commitment to large-area OLED Gen-fab IP. Its technology mix spans H10K 59 (display panels, 7 records), H10K 85 (organic semiconductor materials, 5 records), and H10K 30 (organic photovoltaics / charge transport, 3 records) — a broader materials-to-device coverage than the Chinese leaders’ more process-focused profiles.
families: 10| Applicant | Recent (3 yrs) | Trend |
|---|---|---|
| BOE Technology Group Co., Ltd. | 2 | ▼ -80% |
| Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd. | 5 | ▲ new entrant |
| Samsung Display Co., Ltd. | 8 | ▲ new entrant |
| Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. | 1 | ▲ new entrant |
| Novaled GmbH | 2 | ▲ new entrant |
| Universal Display Corporation | 2 | ▲ new entrant |
| HKC Corporation Ltd. | 4 | ▲ new entrant |
| Xian Smart Materials Co., Ltd. | 3 | ▲ new entrant |
Surface deposition, materials chemistry, and semiconductor device integration are under-served
Several IPC branches adjacent to the dominant H10K core carry low patent-record counts relative to the evident manufacturing scope of the field. These observations point to areas where technical activity exists but formal IP protection appears sparse — worth monitoring before committing R&D budget.
C23C · Coating and surface deposition
C23C holds only 5 patent records (3% of the IPC distribution), despite the centrality of thin-film deposition — including vapor deposition, sputtering, and ALD — to Gen-fab OLED manufacturing. Kateeva’s inkjet deposition work and Universal Display’s stack engineering touch adjacent chemistry, but formal C23C coverage is sparse. Teams with process-engineering depth in PVD, CVD, or ALD could find a less contested entry path here compared with the crowded H10K core.
Search this in Eureka →C09D · Coatings, paints and inks
C09D carries 5 patent records (3%), and Kateeva’s co-dominance of C09D 11 (functional inks) with 3 records illustrates that inkjet-printable OLED inks for large-area substrates remain a sparse but technically meaningful niche. As Gen-fab economics push toward solution-process deposition to reduce material waste on large glass, C09D represents an adjacent branch where materials and formulation expertise could translate into defensible IP with a plausible entry path via ink formulation or encapsulant development.
Search this in Eureka →How leaders differ by technology route across H10K sub-classes
Route coverage across the main technology branches in the current evidence set.
| Player | H10K 59 · Organic semiconductors (OLED etc.) | H10K 50 · Organic semiconductors (OLED etc.) | H10K 71 · Organic semiconductors (OLED etc.) | H10K 85 · Organic semiconductors (OLED etc.) | H10K 99 · Organic semiconductors (OLED etc.) |
|---|---|---|---|---|---|
| BOE Technology Group Co., Ltd. | Strong · 11 | Strong · 9 | Strong · 10 | Emerging · 1 | Emerging · 2 |
| Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd. | Strong · 5 | Strong · 4 | Strong · 7 | Emerging · 1 | Emerging · 1 |
| Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd. | Strong · 13 | Absent | Moderate · 4 | Absent | Absent |
| Samsung Display Co., Ltd. | Strong · 7 | Moderate · 2 | Moderate · 2 | Strong · 5 | Absent |
| Universal Display Corporation | Strong · 3 | Strong · 5 | Strong · 5 | Absent | Emerging · 1 |
| Novaled GmbH | Absent | Strong · 4 | Strong · 3 | Strong · 5 | Emerging · 1 |
| LG Display Co., Ltd. | Strong · 4 | Moderate · 2 | Moderate · 2 | Absent | Absent |
Frequently asked questions
The corpus contains 101 patent families in scope, spanning filings from 2017 through 2026.
TCL China Star Optoelectronics (Shenzhen) leads with 14 patent families, ahead of BOE Technology Group at 12 and Samsung Display at 10.
The top five filers account for 42% of the hundred largest filers’ combined total. The top three applicants — TCL China Star, BOE, and Samsung Display — hold a measurable positional lead over the fragmented mid-tier.
H10K (Organic semiconductors / OLED) dominates with 106 patent records, far exceeding every adjacent class. The next-largest are H01L Semiconductor devices (8 records), C09K Materials (6), and C09D Coatings and inks (5).
The United States is the leading jurisdiction with 76 patent records. Europe (EPO) follows at 14, and China at 7. South Korea and Germany each hold 3 records. The relatively low China count is notable given that most leading applicants are Chinese firms.
The field is assessed at the Maturity stage: annual filings peaked in 2021 at 24 families and have plateaued near that level since, while the multi-year window still reflects 21% growth over the prior period. The recent-window softening in 2025–2026 data is partially attributable to publication lag.
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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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