Transparent Display Testing Patents: Top Companies & Trends 2026
- Filing has already peaked. 2022 was the high-water mark at 39 filings; the years since show a flat-to-declining trend, not a growing field.
- Two Korean display makers filed jointly at scale. Samsung Display and Toshiba Nyrex (Tokusan Nyrex) form the strongest co-assignee pair in the dataset, at 21 shared filings.
- Every tracked leader went to zero in the latest year. Samsung Display, LG Display, Toshiba Nyrex and Innolux each show -100% YoY momentum, consistent with the 18-month publication lag rather than an actual stop in R&D.
Filing growth compares 2021 (21 records) with 2024 (14) — 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 149 records in scope (CR5), not by the ranked leaders only.
What this patent set covers
This landscape tracks 149 patent families filed between 2015 and mid-2026 that combine transparent display technology — transparent OLED, see-through panels — with testing and inspection methods such as transmittance measurement, optical inspection and defect detection. The search deliberately pairs a display-structure term with a test-method term, so the result set skews toward claims that cover how a transparent panel is measured or verified, not just how it is built.
The IPC composition shows the field sitting across semiconductor device structure (H01L), OLED-specific organic semiconductor claims (H10K), and a meaningful chemistry tail in acyclic/carbocyclic and organo-metallic compounds (C07C, C07F) alongside optical control and digital-processing subclasses. That spread signals a technology that is claimed from multiple directions at once — materials, optics and software — rather than a single well-defined test standard.
Filing trend and technology composition
Two views of the same 149-family dataset: when the filings happened, and which parts of the classification system they sit in.
A field that has already crested
Filings ramped from zero in 2017 to a peak of 39 in 2022, then eased off. Because publication lags filing by roughly 18 months, the most recent year is always undercounted in a chart like this, but the 2022 peak followed by a flatter run is a real signal that the initial claim rush is behind us.
Where the claims sit
H01L (semiconductor devices) and H10K (organic semiconductors) together account for the largest share of records, confirming that most inspection and testing claims are anchored to a specific display or OLED structure rather than filed as a standalone measurement method. The C07C/C07F/C07D chemistry subclasses point to a separate cluster of filings built around barrier and encapsulation materials that happen to include inspection or defect-detection language.
Shares are the percentage of the 149 records in scope. A patent can carry several IPC classes, so the shares add up to more than 100%.
Go deeper on Transparent Display Testing and Inspection with Eureka
This page is one run against one query. Ask Eureka your own question about transparent display testing and inspection and every answer comes back with the patent numbers behind it.
Try EurekaRepresentative and most-cited filings
Transparent display device with touch sensor (US12075681B2, LG Display, 2024-08-27)
The patent describes a transparent display with transmissive and non-transmissive areas, touch lines routed through the non-transmissive area, and touch blocks arranged so a defective touch sensor can be detected block by block, while limiting the light-transmittance loss the touch wiring would otherwise cause.The claims tie defect detection directly to the physical layout of the touch sensor grid, rather than describing a generic optical test method.
| # | Publication no. | Patent title | Citations |
|---|---|---|---|
| 1 | US20190096135A1 | Systems and methods for visual inspection based on augmented reality | 272 |
| 2 | WO2005051525A1 | Permeation barrier coating or layer with modulated properties and methods of making the same | 104 |
| 3 | US5990995A | Reflection type liquid crystal display device for converting incident light into electric power | 73 |
| 4 | US20140231761A1 | Display substrate and method of manufacturing the same | 67 |
| 5 | US20160147109A1 | Display Device and Electronic Device | 62 |
| 6 | US20190273125A1 | Display device | 46 |
| 7 | US20170200526A1 | Ultra-thin doped noble metal films for optoelectronics and photonics applications | 43 |
| 8 | US20160172562A1 | Method for forming Circuit-on-Wire | 36 |
| 9 | US9019220B1 | Baseline charge compensation | 19 |
| 10 | EP0814365A2 | Reflection type liquid crystal display device | 16 |
Citation counts favour older filings simply because they have had more time to be cited within this corpus; treat them as a signal of influence, not of current technical relevance.
Each row carries its publication number; clicking a row searches Eureka by that number.
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Three patterns stand out once the raw counts are put in context.
The rush has already happened
Growth from 0 in 2017 to 39 in 2022 followed by a flatter pattern means the claim space around core transparent-display inspection methods is largely staked out. New entrants are more likely to find open ground in adjacent chemistry or software claims than in the core optical-test methods themselves.
Structure-first, not method-first
The two largest IPC subclasses are both structural (semiconductor device, OLED), not measurement-specific. Filers are overwhelmingly anchoring inspection and defect-detection claims to a particular device architecture, which narrows freedom-to-operate for anyone targeting the same architecture but leaves generic test-method claims comparatively open.
One partnership dominates joint filing
Samsung Display and Toshiba Nyrex form the strongest co-assignee pair in the dataset by a wide margin, indicating a supplier-integrator relationship around barrier or encapsulation materials that also carries inspection claims. No other pair approaches that density.
Read the drop-off with the lag in mind
Every major assignee tracked shows zero filings in the latest year and -100% YoY momentum. Given the roughly 18-month gap between filing and publication, this is more likely an artefact of the data cut-off than evidence that these companies have stopped filing in this area.
Eureka can read the same corpus for gaps instead of for coverage: under-claimed branches adjacent to transparent display testing and inspection, with the prior art for and against each one.
Who is active, and where the gaps are
Filing activity concentrates around a small group of display makers and material suppliers, with a long tail of single- or few-filing entrants behind them.
Panel makers pair with material suppliers
The strongest collaboration signal in the dataset is between a panel-side assignee and a materials-side assignee, consistent with barrier-coating and encapsulation work that carries inspection claims as a secondary element rather than the primary invention.
OLED structure claims dominate the organic side
A large share of the dataset sits in the H10K subclass, meaning transparent OLED structure and its associated defect or transmittance testing is the densest single cluster outside general semiconductor devices.
US filing dominates, Europe is secondary
The United States receives more than half of tracked filings, with EPO, WIPO/PCT and Germany forming a secondary tier. That pattern suggests litigation and licensing exposure is concentrated in the US market first.
| Assignee | Recent year | YoY |
|---|---|---|
| Samsung Display Co., Ltd. | 0 | -100% |
| LG Display Co., Ltd. | 0 | -100% |
| Toshiba Nyrex, Inc. | 0 | -100% |
| Innolux Corporation | 0 | -100% |
| Semiconductor Energy Laboratory Co., Ltd. | 0 | — |
| Samsung Electronics Co., Ltd. (Korea) | 0 | — |
| LG Chem, Ltd. | 0 | — |
| BAE Systems plc | 0 | — |
Where to take this analysis
The dataset points to a field with its structural claims largely staked out and its measurement-method and chemistry claims comparatively less crowded.
Map freedom-to-operate against the H01L/H10K core
Before drafting new claims around a transparent display structure, check overlap against the dense H01L and H10K clusters rather than the inspection-method language alone.
Explore in EurekaTrack the Samsung Display / Toshiba Nyrex pairing
This is the single strongest collaboration signal in the dataset and worth monitoring for follow-on filings in barrier and encapsulation testing.
Explore in EurekaWatch for the publication-lag rebound
The apparent -100% YoY drop across every leading assignee is more consistent with an 18-month publication lag than a real stop in R&D; revisit this trend once the next data cut lands.
Explore in EurekaCommon questions about this landscape
In this dataset, it means a patent family whose title, abstract or claims combine transparent display technology (transparent OLED, see-through display panels) with a testing or inspection method such as transmittance measurement, optical inspection or defect detection. Many of these filings anchor the test method to a specific device structure, such as a touch sensor grid or a barrier coating, rather than claiming a standalone measurement technique. This means a search on test-method terms alone will miss a large share of the relevant art, which is why the search string pairs both kinds of terms.
Samsung Display, LG Display, Toshiba Nyrex (Tokusan Nyrex), Innolux and Semiconductor Energy Laboratory are among the most active assignees tracked in this dataset. Samsung Display and Toshiba Nyrex also form the strongest co-assignee pair by a wide margin, at 21 shared filings, pointing to a close supplier relationship around materials that also carry inspection claims. All of the leading assignees show zero filings in the most recent year, which is very likely an effect of publication lag rather than an actual halt in filing.
Not on the evidence in this dataset. Filings rose from zero in 2017 to a peak of 39 in 2022, and the years since show a flat-to-declining pattern rather than continued growth. That does not mean R&D has stopped; the 18-month gap between filing and publication means the last one to two years in any patent chart are always undercounted. But the shape through the peak year suggests the initial wave of core structural claims has already been filed.
The densest filing is in structural subclasses (H01L semiconductor devices, H10K organic semiconductors), meaning claims tied to a specific device architecture are the most crowded. Comparatively thinner areas include in-line transmittance drift calibration, AR-assisted defect classification, touch-block-level sensor fault isolation, and flexible transparent barrier defect metrology. These are narrower, but they sit adjacent to the crowded core rather than in an entirely different field, so freedom-to-operate checks still matter.
US12075681B2, assigned to LG Display and granted with a 2024-08-27 date, covers a transparent display device with a touch sensor arranged so that transmissive areas carry the touch sensors while touch lines and blocks sit in the non-transmissive area, enabling detection of a defective touch sensor at the block level while limiting light-transmittance loss. It is a structure-plus-detection claim, not a generic optical test method. Anyone building a transparent touch panel with block-level fault isolation should review this claim set closely rather than assume a generic inspection patent would not apply.
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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.