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QD Inkjet & Photolithographic Patterning Patent Snapshot

QD Inkjet & Photolithographic Patterning Patent Snapshot
Evidence Snapshot
QD Inkjet / Photolithographic Patterning Patent Snapshot in 2026

TCL Technology Group Corporation holds a commanding position in this niche field, accounting for the largest single share among a small set of Chinese display makers, Korean universities, and a handful of other research institutions. Annual filing volume has eased significantly from its 2019 peak, placing the field in a decline stage—though the most recent 24 months remain subject to publication lag.

18
Patent families in scope
N/A
Concentration not assessed
N/A
Growth trend not assessed
United States
Leading jurisdiction
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Published byPatSnap Insights Team··6 min readVerified by PatSnap Eureka data
Overview

TCL leads a highly concentrated, China-anchored field

TCL Technology Group Corporation ranks first with 6 patent families, ahead of BOE Technology Group (3 patent families) and Beijing BOE Technology Development (2 patent families). The top five filers together account for 67% of the ranked applicants visible in this query’ combined total, signaling an unusually tight visible assignee structure for a display-technology subfield.

A clear two-tier gap separates TCL from the rest: the next-closest applicants hold at most half TCL’s count. Below the top three, a cluster of academic institutions—Hongik University, Fuzhou University, Fujian Normal University, Yonsei University, and Hefei Institute of Physical Science—each contribute single patent families, confirming that university labs remain active but peripheral contributors.

Leading applicants
#ApplicantPatent familiesShare
1TCL Technology Group Corporation6
2BOE Technology Group Co., Ltd.3
3Beijing BOE Technology Development Co., Ltd.2
4Hongik University Industry-Academic Cooperation Foundation2
5Fuzhou University1
6Samsung Display Co., Ltd.1
#ApplicantPatent familiesShare
7Hefei Institute of Physical Science, Chinese Academy of Sciences1
8Wuhan China Star Optoelectronics Semiconductor Display Technology Co., Ltd.1
9Yonsei University Industry-Academic Cooperation Foundation1
10Fujian Normal University1
11Samsung Electronics Co., Ltd.1
12Shenzhen China Star Optoelectronics Semiconductor Display Technology Co., Ltd.1
↗ Hover a row · click a company to ask Eureka

TCL’s lead, supported by BOE’s parallel position and the presence of BOE’s development subsidiary, suggests that vertically integrated Chinese display manufacturers are the primary commercial drivers of this patterning approach. Samsung Display and Samsung Electronics each hold one patent family, indicating that the visible Korean display player is present but not prioritizing this route at scale.

The most recent 18–24 months of filing data are under-counted due to standard patent publication lag; any apparent quiet in 20252026 should not be read as a definitive absence of activity. Longer-window growth, applicant concentration, and technology-route coverage are therefore more reliable signals than the latest-year bar alone.

Source: PatSnap Eureka. Chart shows the top applicants ranked by patent families. Applicant counts can overlap where a patent family lists several applicants, so they need not sum to the total in scope.Explore deeper in Eureka →
Trends & Structure

Activity peaked in 2019 and has since contracted; organic-semiconductor filings dominate the technology mix

The annual filing trend and the IPC branch breakdown together reveal both the temporal trajectory and the technical focus of the field.

Annual filing trend

Filings rose from 2 families in 2017 to a peak of 5 in 2019, then settled into modest single-digit years through 2021 before dropping to zero in 2022 and 2023. A small rebound appears in 2024 and 2025, though those years remain subject to publication lag and should not yet be read as a recovery trend. The lifecycle evidence confirms annual volume has eased from the 2019 peak.

Annual filing trendAnnual values from 2017 to 2026, peaking at 5 in 2019.22017020185201932020420210202202023220242202502026↗ Hover for values · click a bar to ask Eureka

Technology composition

H10K (Organic semiconductors / OLED-adjacent classes) accounts for the largest share of IPC records, reflecting the field’s tight coupling to electroluminescent display architectures. H01L (Semiconductor devices) and C09K (Materials for miscellaneous applications) form a secondary cluster, pointing to concurrent work on device structures and quantum-dot ink formulations. Nanotechnology applications (B82Y), printer/inkjet mechanics (B41J), metal-compound chemistry (C01G), and coatings/inks (C09D) each appear sparsely, marking adjacent branches that have attracted little dedicated filing to date.

Technology compositionH10K · Organic semiconductors (OLED etc.) leads with 15; H01L · Semiconductor devices 8.H10K · Organic semicondu…15H01L · Semiconductor dev…8C09K · Materials for mis…7B82Y · Nanotechnology ap…2B41J · Typewriters & pri…1C01G · Compounds of othe…1C09D · Coatings, paints …1H10P1↗ Hover for values · click a bar to ask Eureka
Source: PatSnap Eureka. Technology-branch counts are measured in patent records; a single patent family can carry several IPC classes, so class totals can exceed the family total in scope.Explore deeper in Eureka →
Key Patents

Highly 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.

Featured patent
US11785823B2Published 2023-10-10

Quantum dot display panel and manufacturing method…

Wuhan China Star Optoelectronics Semiconductor Display Technology CO., LTD.

A quantum dot display panel and a manufacturing method thereof are provided. The quantum dot display panel includes an array substrate; a luminescent layer disposed on the array substrate; an encapsulation layer disposed on the luminescent layer; and a color filter layer disposed on the encapsulation layer. The color filter layer includes a plurality of… (excerpt from the patent abstract)

Quantum dot display panel and manufacturing method… — patent drawingQuantum dot display panel and manufacturing method… — patent drawing
Representative drawings from the patent document.
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Highly cited patent families surfaced by this query
#PatentCitations
1II-VI BASED NON-Cd QUANTUM DOTS, MANUFACTURING MET…22
2Display device and preparation method therefor3
3Alloy nanomaterial, preparation method therefor, a…2
4QLED and manufacturing method thereof1

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.

Source: PatSnap Eureka. Citation-ranked patent families surfaced by this query.Open in Eureka →
Visible assignees

Assignee snapshot from the current evidence set

The applicants below are visible in this query result. Because the evidence set is relatively small, read this section as a directional snapshot rather than a full competitive ranking.

Leader · TCL Technology Group Corporation

TCL Technology Group Corporation

TCL holds 6 patent families, the largest position in the corpus. Their technical focus spans quantum-dot materials (C09K 11), semiconductor device structures (H01L 51), and organic-semiconductor display stacks (H10K 50)—a broad multi-layer coverage that reflects vertical integration across the ink-formulation-to-device stack. No recent momentum signal is recorded, consistent with the field’s overall decline phase.

families: 6
Challenger · BOE Technology Group

BOE Technology Group Co., Ltd.

BOE holds 3 patent families and files jointly with its development subsidiary Beijing BOE Technology Development (2 additional families), giving the BOE corporate group a combined footprint of 5 patent families. BOE’s focus concentrates on organic-semiconductor display manufacturing (H10K 50 and H10K 71) and semiconductor device structures (H01L 51), with a narrower materials base than TCL. No new-entrant or accelerating momentum signal is recorded for BOE in recent periods.

families: 3
🔍
More assignee evidence is available in Eureka
Use Eureka to validate whether these visible assignees remain central after refining the query scope and adding related patent classes.
Samsung Display Co., Ltd.Hongik University Industry-Academic Cooperation Foundation+ more
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Source: PatSnap Eureka. Assignee evidence is drawn from the current PatSnap Eureka query. In small evidence sets, applicant counts should be treated as directional signals, not a complete competitive ranking.Explore players →
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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.

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