Roll-to-Roll Nanoimprint Lithography Patents 2026
Roll-to-Roll Nanoimprint Lithography Patents 2026
R2R-NIL combines sub-100 nm resolution with continuous web-handling for industrial-scale nanofabrication. This dataset spans 2003–2026 across UV, thermal, and volumetric roll-based architectures.
R2R-NIL: From Foundational Concept to Industrial Development
Roll-to-roll nanoimprint lithography (R2R-NIL) feeds a continuous flexible substrate through patterned imprint rollers, enabling uninterrupted nanopatterning over meter-scale areas. The technique extends nanoimprint lithography, introduced in 1995, beyond batch-mode flat-stamp operation into continuous web manufacturing compatible with flexible electronics and display production lines.
Within this dataset, R2R-NIL encompasses UV-curable roll-based imprinting, thermal roll-to-roll imprinting, plate-to-roll hybrid configurations, and emerging volumetric approaches such as computed axial lithography. Supporting sub-domains include seamless cylindrical mold fabrication, in-line diffractometric metrology, multi-backup roller pressure equalization, and release-agent-free resist materials for continuous operation.
Review literature positions R2R-NIL as the most demanded NIL variant for industrial-scale application due to throughput advantages over step-and-repeat and flat-bed approaches. Resolution demonstrated in the broader NIL field reaches as small as 2.4 nm, and sub-100 nm features have been routinely reported in roll-based configurations, confirming that the transition to roll format does not sacrifice patterning fidelity.
In this dataset, the patent and literature record spans 2003 to 2026, reflecting roughly two decades of development. In retrieved records, the most concentrated R2R-NIL-specific portfolio belongs to the Board of Regents, University of Texas System, with four active filings across US, WO, and SG jurisdictions, followed by Canon Kabushiki Kaisha with five records covering substrate pretreatment and etch uniformity.
Filing Trends and Technology Cluster Distribution
The retrieved patent and literature records reveal distinct clustering across four technology approaches and a clear temporal evolution from foundational roller apparatus patents (2003–2010) through mold engineering and process integration (2011–2018) to volumetric and tiling innovations (2019–2026).
R2R-NIL Technology Cluster Patent Distribution in This Dataset
In this dataset, the Plate-to-Roll and UV-Assisted Roll Imprinting cluster accounts for the highest patent count, driven by the University of Texas System family, followed by Seamless Roller Mold Fabrication and Semiconductor/Display Process Integration clusters.
↗ Click bars to exploreR2R-NIL Patent Filing Activity by Development Phase (Retrieved Records)
In this dataset, filing activity accelerated in the Maturation Phase (2019–2026), which accounts for the highest number of retrieved records, reflecting sustained institutional and commercial investment in plate-to-roll UV-NIL and volumetric roll-based architectures.
↗ Click bars to exploreKey R2R-NIL Application Areas Across Industries
Retrieved patents and literature identify four principal application domains for R2R-NIL technology: flexible optoelectronics and displays, photonics and optical components, semiconductor device fabrication, and magnetic storage — each with distinct resolution and throughput requirements documented in this dataset.
Flexible Optoelectronics and Displays
The University of Texas System patent family explicitly targets metal mesh transparent conducting electrodes, wire grid polarizers, and light-trapping gratings for flexible optoelectronic devices, with the most recent US grant dated 2026. Literature confirms multi-level NIL for thin film transistor backplane manufacturing, demonstrating sub-micron amorphous oxide semiconductor TFTs with performance comparable to photolithography benchmarks for AMOLED display panels. Sharp Kabushiki Kaisha’s roller NIL apparatus targets low-reflective optical surfaces for resin sheets used in mobile phone LED frontlight systems.
Flexible DisplayPhotonics and Optical Components
Applications documented in this dataset include Bragg gratings for distributed feedback laser diodes, diffraction gratings, anti-reflection nanostructures, and 3D photonic crystals. The continuous R2R 3D nanostructure patterning system demonstrated photonic crystal fabrication on flexible substrates at 3 mm/s over 50 × 200 mm² areas with up to 88% yield over a four-month period. Leia Inc.’s mold tiling system directly targets diffractive optical element production at scale through precision-edge mold segment assembly.
Optical ComponentsSemiconductor Device Fabrication
Samsung Electronics holds active US patents (2021–2022) for using NIL to form selective growth masks for semiconductor nanowire fabrication, with continuation filings through 2022. Canon Kabushiki Kaisha has maintained a multi-jurisdiction family across US, EP, WO, and SG on substrate pretreatment to reduce fill time and improve etch uniformity, with a 2024 EP continuation still active. These filings address semiconductor process integration requirements directly connected to R2R-NIL workflow adoption.
Semiconductor FabMagnetic Storage — Seagate NIL
Seagate Technology has filed NIL patents (US, 2016) targeting thin film head manufacturing, including write poles, readers, and near-field transducers. The approach enables simultaneous fabrication of entire bars of thin film heads, eliminating alignment errors between neighboring heads. This application domain represents a distinct industrial use case for high-precision NIL patterning outside the display and semiconductor sectors documented in this dataset.
Magnetic StorageLeading Patent Assignees in R2R-NIL — Dataset Snapshot
In retrieved records, Canon Kabushiki Kaisha and the Board of Regents, University of Texas System together account for 9 of the approximately 28 identified patent filings in this dataset, with Canon’s 5 records focused on process integration and the University of Texas System’s 4 records exclusively covering plate-to-roll UV-NIL architectures. These counts reflect the dataset snapshot only and do not imply overall industry leadership.
Top R2R-NIL Patent Assignees by Filing Count in Retrieved Records (Dataset Snapshot)
↗ Click bars to exploreBoard of Regents, Univ. of Texas System
This assignee holds 4 active patent records in this dataset spanning WO (2020), SG (2022), US (2022), and US (2026), all covering plate-to-roll UV-NIL tools and processes. The family explicitly targets metal mesh transparent conducting electrodes, wire grid polarizers, and light-trapping gratings for flexible optoelectronic devices. All four records carry active legal status, with the most recent US grant dated 2026, indicating ongoing commercial prosecution likely tied to licensing efforts targeting flexible electronics manufacturers.
United StatesCanon Kabushiki Kaisha
Canon holds 5 records in this dataset across US, EP (×2), WO, and SG jurisdictions, all focused on substrate pretreatment to reduce fill time and improve etch uniformity in nanoimprint lithography. The portfolio spans 2017–2024, with a 2024 EP continuation confirming active prosecution. Canon’s filings address NIL-to-semiconductor process integration rather than the rolling mechanism itself, creating a potential process integration dependency for R2R-NIL workflows targeting semiconductor-grade downstream etch steps.
JapanForward Signals in R2R-NIL: 2022–2026 Dataset Records
Among records dated 2022–2026 in this dataset, four forward signals stand out: volumetric 3D roll-based patterning via computed axial lithography, precision mold tiling for scalable area coverage, AI/ML-driven process optimization, and continued plate-to-roll UV-NIL prosecution by the University of Texas System.
3D Volumetric Roll-Based Patterning via Computed Axial Lithography
The University of California’s computed axial lithography (CAL) patents (US 2024, US 2026) use optical modulation systems to expose predetermined 3D volumetric regions within a photosensitive web, enabling additive volumetric 3D structuring without physical stamp contact. This eliminates mold wear as a cost driver entirely. The work is federally funded by NSF and both records carry active legal status, representing an early-mover position in a space with minimal competing filings in this dataset.
Precision Mold Tiling for Large-Area Scalable NIL
Leia Inc.’s multi-jurisdiction mold tiling family (WO 2023, US 2025, KR 2024 pending) introduces precision-edge and undercut-sidewall mold segments that can be abutted seamlessly, allowing large-area mold assembly from smaller individually patterned tiles. This directly addresses the capital cost and throughput limitations of single-piece large-area master fabrication. The KR filing remains pending as of 2024 and the US record is active as of 2025.
Plate-to-Roll UV-NIL vs. Computed Axial Lithography R2R
Click any row to explore further.
| Dimension | Plate-to-Roll UV-NIL (Univ. of Texas) | Computed Axial Lithography R2R (Univ. of California) |
|---|---|---|
| Patterning Mode | Surface imprinting via rigid flat template pressed against flexible substrate in UV-cured line contact | Volumetric 3D exposure via optical modulation system — no physical stamp contact |
| Mold Wear | Physical stamp contact creates wear; stamp lifespan approximately 500 cycles per stamp documented in dataset | No physical mold contact — mold wear eliminated as a cost driver entirely |
| Feature Dimensionality | 2D surface patterns: metal mesh electrodes, wire grid polarizers, light-trapping gratings | 3D volumetric structures within photosensitive web — enables embedded microstructures |
| Jurisdiction Coverage | US (×2), WO, SG — all active as of 2026 | US (×2) — both active as of 2026; narrower jurisdiction footprint in this dataset |
| Funding / Legal Status | Institutional prosecution; latest US grant March 2026; commercial licensing activity implied | NSF federally funded; both US records active as of 2024 and 2026 |
| Application Focus | Flexible optoelectronics: transparent conducting electrodes, polarizers, light-trapping gratings for flexible devices | Applications requiring embedded 3D microstructures: microfluidics, optical waveguides implied by architecture |
| Competitive Landscape | FTO risk flagged; active multi-jurisdiction family creates concentration risk for entrants in dataset | Minimal competing filings in this dataset; described as early-mover position in IP-thin space |
Frequently Asked Questions: Roll-to-Roll Nanoimprint Lithography
According to this dataset, sub-100 nm features have been routinely reported in roll-based configurations. In the broader NIL field, patterns as small as 2.4 nm have been demonstrated. Review literature confirms that the transition to a roll format does not sacrifice patterning fidelity compared to batch-mode NIL.
Multiple independent sources in this dataset identify mold durability and cost as the primary commercial barriers. Carpe Diem Technologies documents a stamp lifespan of approximately 500 cycles per stamp, requiring thousands of stamps to achieve millions of product units. Seam defects and mold fabrication cost are also cited by BASF and Shenzhen China Star Optoelectronics.
In this dataset, the Board of Regents, The University of Texas System holds the most concentrated R2R-NIL-specific portfolio with 4 active records across US (×2), WO, and SG jurisdictions, all covering plate-to-roll UV-NIL tools and processes. The most recent US grant is dated 2026.
Conventional R2R-NIL uses a physical stamp or roller mold in contact with a resist-coated flexible substrate. The University of California’s computed axial lithography (CAL) approach instead uses optical modulation to expose predetermined 3D volumetric regions within a photosensitive web material beyond a photo-responsive threshold — enabling additive 3D structuring without any physical stamp contact, and eliminating mold wear as a cost driver.
In this dataset, the US jurisdiction accounts for the majority of patent records, followed by WO (PCT filings used as entry points), EP, SG, KR, and IN. The presence of Shenzhen China Star Optoelectronics and a KR-jurisdiction Leia Inc. filing signals growing Asia-Pacific engagement, though the dataset is weighted toward US and PCT filings.
This dataset documents four principal application domains: (1) flexible optoelectronics and displays — including metal mesh transparent electrodes, wire grid polarizers, and TFT backplanes for AMOLED panels; (2) photonics and optical components — including diffraction gratings, anti-reflection nanostructures, and 3D photonic crystals; (3) semiconductor device fabrication — including selective growth masks for nanowires; and (4) magnetic storage — including thin film heads for Seagate.
Data and insights on this page are based on a limited patent and literature dataset and are for reference only. Figures may not represent the complete technology landscape.