Anisotropic Conductive Film Bonding Patents: Leaders & Trends 2026
Anisotropic Conductive Film Bonding Patents: Who Files, What They Claim
Filings are concentrated at the top: the top 5 assignees account for 44.7% of all 5,249 records in scope, and the top 10 for 53.6%. Annual filings climbed to 449 in 2017, the peak year in the dataset, before easing to 112 by 2024 — a 38% decline from the 180 filed in 2021. Treat 2025 and 2026 counts as incomplete rather than as evidence of a further drop.
- 1SEMICON ENERGY LAB CO LTD19.0%
- 2DEXERIALS CORP15.0%
- 3LG ELECTRONICS INC4.6%
- 4SAMSUNG DISPLAY CO LTD3.7%
- 5RESONAC CORP2.3%
See the full anisotropic conductive film bonding analysis in Eureka
- The complete ranking, not just the top five
- Every IPC branch with its share of the corpus
- The most-cited records, and where claim space is still thin
Common questions about ACF bonding patents
Who holds the most patents in anisotropic conductive film bonding?
One assignee leads clearly with 997 records in this dataset, well ahead of fifth place at 121 and tenth place at 75. The top 5 assignees together hold 44.7% of all 5,249 records in scope, and the top 10 hold 53.6%. Beyond that group there is a long tail of companies with far fewer filings each, so most of the remaining claim space is held by smaller or single-filing entrants rather than a second tier of large players.
Is patent filing in ACF bonding still growing?
Filing activity peaked in 2017 at 449 records and has since declined, falling 38% from 180 records in 2021 to 112 in 2024. Those are the two most recent years that can be treated as complete. Figures for 2025 and 2026 are still filling in because publication typically lags filing by around 18 months, so they should not be read as confirmation the decline is continuing.
What is the difference between ACF and ACP in patent claims?
Anisotropic conductive film (ACF) and anisotropic conductive paste (ACP) both use conductive particles suspended in an insulating matrix to make directional electrical connections, but ACF is applied as a pre-formed film while ACP is dispensed as a liquid or paste before bonding. This dataset’s search string covers both terms together, and the underlying IPC composition shows adhesive-specific claims (C09J, 14.8% of records) are a smaller share than semiconductor-device (H01L, 45.1%) or printed-circuit (H05K, 24.5%) claims, meaning most patent activity concerns how the film or paste integrates into a device rather than the material itself.
Disclaimer. This analysis is based on Patsnap Eureka data drawn from a limited snapshot of global patent records and is provided for general information and reference only. Patent data carries inherent limitations — recent filings are under-counted because of publication lag, counts may be on a record or family basis, classification and applicant-name data may contain errors or duplicates, and the underlying search query defines the scope shown — so the analysis may be incomplete or inaccurate and may not reflect the full technology landscape.
Nothing here is an exhaustive prior-art, novelty, freedom-to-operate or validity search, nor does it constitute legal, financial or professional advice, and it should not be relied upon as such. Verify independently and review with qualified patent and legal professionals before acting on it.
Method: Filing trend and technology composition. Derived from a Patsnap search on Anisotropic Conductive Film Bonding covering 2015–2026, data cut-off 2026-07-31. Counts reflect published records only and shift as new filings publish. Every share divides by all records in scope. Data: Patsnap Eureka. See the full landscape report.