What Dongsung Tech does

Dongsung Tech (동성테크) is a South Korean privately-held company founded in 1989 that specializes in the converting of optical films for the display industry. Its core competency is multi-process lamination and shape processing of films — including slating, laminating, pressing, cutting, and sealing — performed on proprietary equipment designed and manufactured in-house. The company's product portfolio spans three categories: OLED-related products (multi-layer sheets, back plate films, foldable multi sheets, wireless charging shields, cover window/panel/spacer/FPC components, graphite panels, copper tapes); LCD/BLU products (brightness enhancement films, MOF dual brightness enhancement films for TV/monitor/automotive displays, light control films); and proprietary conversion equipment (small and large slating machines, laminators, high-speed presses, cutters, sealers). Manufacturing is conducted across four wholly-owned facilities in South Korea (Hwaseong-si headquarters), China (Dongguan Dongsung Electronics; Shenzhen Xin Dongsung Tech), and Vietnam (Thai Nguyen Dongsung Vina), with cleanroom-rated production totaling over 40,000 square meters.

The business model is B2B enterprise contract manufacturing: Dongsung Tech sells custom-converted optical films and tape products, primarily to display manufacturers, on a quote-based pricing structure with no publicly disclosed prices. Its anchor customer base is dominated by the Samsung group — Samsung Display Tianjin (since 2005), Samsung Display Cheonan (since 2008), Samsung Display Vietnam (since June 2023), and Samsung Electro-Mechanics (since 2015 for wireless charging parts) — with 3M as a co-development partner for Optical Clear Adhesive since 2016. The company holds four granted Korean patents covering OLED device manufacturing, thin-film transistor fabrication, continuous film stamping, and privacy films, and operates under ISO 9001 and ISO 14001 certifications. Marketing is direct relationship-based engagement at industry events and via the company website, with distribution handled through direct enterprise sales and co-located manufacturing serving regional customers in Korea, China, and Vietnam. No public listing, external institutional investment, or M&A activity is evidenced in the available material.

Name

Dongsung Tech

Legal name

Dongsung Tech Co., Ltd.

Website

https://dongsungtech.com

Company type

Private

Founded year

1989

Operating status

Operating

Short description

Dongsung Tech (동성테크) is a privately-held South Korean manufacturer founded in 1989 that converts optical films into custom products for display OEMs. It serves primarily Samsung Display, Samsung Electro-Mechanics, and 3M with OLED/BLU films, foldable sheets, and proprietary conversion equipment across Korea, China, and Vietnam.

Ownership category

akta.pro rank

Product category

Optical Film Components for Displays

NAICS

Computer and Peripheral Equipment Manufacturing (3341)

SIC

Computer Peripheral Equipment, Nec (3577)

akta.pro primary industry

Industrial Electronics Original Design Manufacturing (ODM) (IMAGAGAB)

akta.pro secondary industry

Embedded & HMI Electronics Manufacturing (Industrial PCs, HMIs, Panel PCs) (IMAGAGAD)

Keywords

• Optical film converting
• Display manufacturing
• OLED components
• BLU components
• Conversion equipment

Headquarters

HQ city

Dongan

HQ country

South Korea

HQ region

Asia

Offices4 records

Markets served

GTM type

B2B

Offering type

Hardware or Manufacturing

Cost components

Infrastructure, Operations, Supply Chain, Technology or R&D, Personnel

Revenue model

1. Optical Film Converting Products: Manufacturing and converting optical films for display applications including BLU and OLED. Products include OLED multi-layer sheets, Back Plate Films, Foldable Multi Sheets, wireless charging shields, LCD Brightness Enhancement Films, MOF Sheets, and Optical Clear Adhesive (OCA).

Go-to-market motion1 record

Distribution channels1 record

Marketing channels2 records

Core offering

Dongsung Tech is a specialized converting company that manufactures customized optical film and tape products for the display industry, primarily serving OLED and BLU (Backlight Unit) applications. The company transforms source materials into highly-processed laminated films including OLED multi-layer sheets, Back Plate Films, Foldable Multi Sheets, wireless charging shields, LCD Brightness Enhancement Films, MOF Sheets, and Optical Clear Adhesive (OCA). Dongsung also designs and manufactures its own proprietary conversion equipment (slating machines, laminators, high-speed presses, cutters, sealers) used in-house for film processing.

Product overview

Dongsung Tech is a specialized CONVERTING company that provides customized film and tape products for the display industry. The company operates as a single unified offering platform focused on converting processed optical films and tapes into custom applications. The product portfolio consists of three main categories: (1) OLED-related products including multi-layer sheets, back plate films, foldable multi sheets, wireless charging shields, cover components (window, panel, spacer, FPC), graphite panels, and copper tapes; (2) LCD/BLU products including brightness enhancement films, MOF dual brightness enhancement films for TV/monitor/automotive, and light control films; and (3) proprietary conversion equipment including slating machines, laminators, high-speed presses, cutters, and sealers. All products are manufactured at the company's facilities in South Korea, China (Dongguan, Shenzhen), and Vietnam (Hanoi).

Differentiator

Problem solved

Functional benefit

Products and services

• OLED Multi Layer Sheet Multi-layer sheet product for OLED display applications, providing strength reinforcement and protection for mobile devices.
• Back Plate Film Film product used as a back plate component in display assemblies.
• Foldable Multi Sheet Multi-layer sheet product designed for foldable display applications, engineered to withstand repeated bending.
• Wireless Charging Shield Shielding material for wireless charging applications that blocks electromagnetic interference, manufactured for Samsung Electro-Mechanics.
• LCD Sheet (Brightness Enhancement Film) Optical film that enhances brightness in LCD backlight units by recycling light.
• MOF Sheet (Dual Brightness Enhancement Film) Dual brightness enhancement film combining multiple optical functions for TV, monitor, and automotive displays.
• Advanced Light Control Film (Automotive) Optical sheet for automotive display applications with advanced light control properties.
• Optical Clear Adhesive (OCA) Clear adhesive used for optical bonding in display assemblies, developed and mass-produced with 3M partnership.
• Cover Window Converted film product serving as a cover window for mobile displays.
• Cover Panel Converted film product serving as a cover panel component for OLED displays.
• Cover Spacer Converted film product used as a spacer component in display assemblies.
• Cover FPC Converted film product for flexible printed circuit cover applications.
• Cu Tape (Copper Tape) Copper tape for conductive applications in display manufacturing.
• Graphite Panel Graphite-based panel for heat dissipation in OLED applications.
• Process Tape Tape used in manufacturing processes for display assembly.
• Antiglare Tape Tape conversion product with antiglare properties, available in small, medium, and large sizes.
• Reflective Tape Tape conversion product with reflective properties for light management.
• Diffusion Material Material conversion product for light diffusion in backlight applications.
• Double-Sided Tape Converted tape product with adhesive on both sides for lamination applications.
• Light-Blocking Tape Tape conversion product that blocks light in display applications.
• Slating Machines (Small and Large) Proprietary slating equipment in small and large formats for film conversion processing.
• Laminator Proprietary lamination equipment for bonding multiple film layers.
• High-Speed Press Proprietary high-speed press equipment for film processing.
• Cutter Proprietary cutting equipment for film conversion.
• Sealer Proprietary sealing equipment for film processing.

Named customers8 records

Segments2 records

Ideal customer profiles2 records

Technology focussed Yes

API detail

Has API

No

API docs

API detail

Core technology

AI maturity

App detail

Feature2 records

Partnerships

Five partnerships are on record, tiered core.

• Samsung Display Vietnam (SDV)coreStrategic or Co-development Partner · 1 June 2023Samsung Display Vietnam is a core partner of Dongsung Tech. Dongsung Tech achieved 1st vendor registration and started mass production in June 2023, supplying optical film conversion products.
• 3McoreStrategic or Co-development Partner · 1 July 20163M is a core partner for LCD film development and mass production of Optical Clear Adhesive (OCA) since 2016. Also developed 3M LCD film products in 2021.
• Samsung Electro-MechanicscoreStrategic or Co-development Partner · 1 November 2015Samsung Electro-Mechanics is a core partner for wireless charging parts manufacturing and mass production since 2015.
• Samsung Display Cheonan (SDC)coreStrategic or Co-development Partner · 1 January 2008Samsung Display Cheonan has been a core partner since 2008, with Dongsung Tech achieving 1st vendor registration and mass production.
• Samsung Display Tianjin (SDT)coreStrategic or Co-development Partner · 1 December 2005Samsung Display Tianjin partnership established in 2005 as 1st vendor for display optical film supply.

Scale indicators2 records

Recent moves11 records

Expansion highlights5 records

Broad incumbents

• Nitto Denko: Large Japanese diversified materials manufacturer with a major display films business (polarizers, OCA, retardation films) and proprietary converting capabilities. Overlaps with Dongsung on optical film supply to global display OEMs and operates in the same value chain at significantly greater scale.
• Toray Industries: Japanese advanced materials manufacturer with a substantial display film portfolio including PET films, release films, and optical films. Broad incumbent overlapping with Dongsung in optical film supply to display manufacturers.
• LG Chem: Major Korean chemicals and materials company with a large display materials business (polarizers, OCA, optical films). Broad incumbent overlapping with Dongsung in the display film supply chain to Korean and global panel makers.
• Toppan Holdings: Japanese diversified materials and electronics company with display components including color filters, retardation films, and optical films. Broad incumbent in display materials with overlap to Dongsung's product categories.
• Kolon Industries: Korean advanced materials company producing films for display, automotive, and industrial applications, including display optical films. Comparable as a broader incumbent in the Korean display materials value chain.
• Sumitomo Chemical: Major Japanese chemical company producing polarizing films, retardation films, and other display optical components. Broad incumbent serving the same display OEMs as Dongsung, though from upstream raw film manufacturing rather than downstream converting.

Direct peers

• Innox (formerly Innox Advanced Materials): Korean optical film and display component maker focused on display films and adhesives. Direct peer in optical film converting for display applications, with overlapping product categories and shared customers; listed as a Dongsung customer.
• With (Wiith / 위츠): Korean display film and component manufacturer producing optical films, adhesives, and cover-window-related products for OLED and LCD. Direct peer in film converting and an existing Dongsung Tech customer.
• Fine M-Tech: Korean manufacturer of display optical films and functional films, including anti-glare, diffusion, and protective films. Directly comparable as an optical film converter serving display OEMs in the same product categories as Dongsung Tech, and listed as a Dongsung customer.

Others

• 3M (Display & Electronics Materials): Global diversified materials leader with a Display & Electronics Materials business producing OCA, brightness enhancement films, and specialty optical films. Relevant as a Dongsung partner (core partner since 2016 for OCA and 2021 for LCD films) and as a global materials benchmark, though it operates as a raw material supplier and partner rather than direct competitor.

Market position

Strengths5 records

Weaknesses5 records

Competitive moat5 records

Key risks6 records

Key highlights7 records

Customer concentration

Compliance2 records

Revenue estimate

Valuation estimate

Number of profiles

Profiles1 record

Subsidiaries3 records

Funding overview

Funding rounds

Investors

Funding detail is available on the Subscription and Enterprise plan.Contact sales →

M&A

Investments

M&A and investment is available on the Subscription and Enterprise plan.Contact sales →

Frequently asked questions about Dongsung Tech