Optically Clear Double Sided Adhesive Film

We are a manufacturer of optically clear double sided adhesive film for optical bonding, glass bonding, and display panel lamination. This clear double sided adhesive layer is used between cover glass, touch sensors, LCD/OLED modules, and optical components where low haze and high light transmission are important. The film is supplied with PET release liners for clean handling, accurate die cutting, and stable display module assembly.

Product Overview

This optically clear double sided adhesive film is made for display and optical assembly where the bonded area must stay clear after lamination. The adhesive layer fills the gap between cover glass, touch sensor, optical film, and display surfaces. By reducing the air layer, the module can show better brightness, cleaner contrast, and a stable viewing window.

Films Protection Company supplies this OCA film in roll, sheet, and die-cut formats for display module factories, glass processors, touch panel assemblers, and optical component lines. In our sample glass/OCA/glass test, typical light transmission can reach above 98%, and haze is commonly controlled below 1.0% under controlled lamination conditions. Final performance depends on adhesive thickness, glass cleaning, roller pressure, storage, and aging test method.

In production, thickness and roll width are only the starting points. Liner release force, adhesive flow, bubble control, die-cut edge cleanliness, and humidity stability all affect module quality. For die-cut parts, we check whether the adhesive edge stays clean after waste removal, because small deformation can affect automatic placement, window alignment, and glass bonding.

Benefits

• Creates full-surface contact between cover glass, touch sensors, LCD/OLED panels, and optical films to reduce air-gap reflection.
• Low haze and high light transmission help keep the display area sharp on clear viewing windows.
• The double sided adhesive layer supports stable bonding without liquid adhesive mixing or curing.
• PET release liners protect the adhesive surface during handling, peeling, positioning, and die cutting.
• Suitable for kiss cutting, window cutting, pull tabs, and shaped parts where clean edges matter.
• In-house checks can include bubble observation, edge lifting review, liner peeling stability, and haze change after aging.

What should be checked before using optically clear double sided adhesive film for display panel lamination?

Before display panel lamination, the film should be tested with the actual cover glass, touch panel, or display module structure. Haze, light transmission, glass adhesion, liner release force, and bubble behavior are more useful than checking thickness alone. In our sample evaluation, bonding is usually more stable when roller pressure, lamination temperature, surface cleaning, and storage are confirmed before mass production. For glass bonding samples, we review bubbles after standing for 24 hours under room condition before humidity or aging checks.

TDS

Production Line

How do release liner and die cutting affect optical bonding quality?

Release liner and die cutting quality can directly affect optical bonding results. A stable liner protects the double sided adhesive layer and allows smoother peeling without adhesive stretching, surface marks, or early dust exposure. In display module production, the die-cut edge should stay clean after waste removal, with less adhesive deformation and fewer exposed particles. If the liner is too tight or the cut edge is rough, bubbles, lifting edges, or contamination may appear during glass bonding. This is why liner balance, waste removal, tab design, and edge cleanliness should be checked before bulk production.

Applications

• Cover glass bonding for display modules where low haze, high clarity, and clean optical appearance are required.
• Touch sensor bonding in LCD, OLED, and industrial display assemblies.
• Bonding for flat, large-size, and selected curved glass structures where edge lifting needs control.
• Panel lamination for automotive displays, control panels, and HMI screens that require stable viewing performance.
• Die-cut OCA parts for automated placement, window bonding, pull-tab handling, and module assembly lines.

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FAQ

Q1: Is this film suitable for display module assembly?

Yes. It is designed for cover glass, touch sensor, LCD/OLED module, and optical component bonding.

Q2: Can the thickness be customized?

Yes. Common options include 50um, 100um, 125um, 175um, and 250um, with custom thickness by project.

Q3: What should be tested before mass production?

Test haze, light transmission, adhesion to glass, liner release, die-cut edge quality, bubble behavior, and aging performance.

Q4: Can it be supplied as die-cut parts?

Yes. It can be supplied in rolls, sheets, kiss-cut pieces, window-cut shapes, and pull-tab designs.