Optical & precision bonding

Fast alignment.
Reliable final cure.

MoleLinker optical UV adhesives combine rapid light-triggered positioning with application-specific cure mechanisms for camera modules, displays, optical components and precision electronic assemblies.

Applications

Designed around the assembly process.

The right UV adhesive depends on light access, substrate combination, bond-line geometry and reliability requirements. We use these constraints to select or adapt the curing platform.

01

Camera modules

Lens barrel and VCM motor fixation, focus-locking and precision positioning for mobile and automotive cameras.

02

Display bonding

LOCA bonding for LCD/OLED panels and touch screens, with options for bubble control and flexible displays.

03

Optical connectivity

FC, LC and MT ferrule bonding, fiber-array assembly and other precision optical connections.

04

Micro-acoustics

Bonding of miniature loudspeaker voice coils and diaphragms in earphones and compact audio devices.

05

Wearable devices

Glass-to-metal frames and ceramic back covers for smart watches and compact consumer electronics.

06

Shadowed assemblies

Moisture-assisted post-cure for FPC joints, component edges and geometries that UV light cannot fully reach.

Product platforms

Two cure strategies.

Values below describe the disclosed development platforms and should be treated as typical process guidance. Final specifications are confirmed for the selected grade and customer application.

LG-UV3705

Single-component UV adhesive

Modified acrylate/epoxy system for rapid UV positioning and complete light cure in precision optical and electronic assemblies.

Light response
320–420 nm UV or visible light
Initial positioning
3–5 seconds
Complete cure
10–30 seconds
Positioning precision
±3 μm in the disclosed focusing process
Typical uses
Camera/VCM, LOCA display, fiber connectors, micro-acoustics, wearables

Performance depends on lamp spectrum, irradiance, exposure, bond-line thickness, substrates and fixture design.

LG-UVX17B4

UV + moisture dual-cure adhesive

Single-component dual-crosslinking system for rapid UV fixation followed by moisture cure in shadowed regions.

Primary cure
Fast UV positioning
Secondary cure
Ambient-moisture post-cure
Key benefit
Improved cure completeness in shadow areas
Process profile
Low operating temperature for heat-sensitive materials
Typical uses
Large LOCA assemblies, camera structures, FPC protection, dissimilar-material bonding

Moisture-cure speed depends on ambient humidity, temperature, geometry and adhesive thickness.

Process fit

From requirement to validated bond.

We recommend confirming both rapid positioning performance and long-term reliability on actual substrates and production equipment.

01

Define

Substrates, gap, dispense method, available light path and required takt time.

02

Select

Match UV-only or dual-cure chemistry to shadowing and temperature limits.

03

Evaluate

Establish exposure, fixture release, final cure and handling windows.

04

Validate

Test strength, optical quality and reliability using production-representative parts.

Evaluation framework

Test what matters to the application.

Test plans are adapted to the assembly rather than relying on a single headline property.

  • Cure depth and conversion
  • Bond strength after cure
  • Position shift and shrinkage
  • Optical clarity and yellowing
  • Bubble and mura inspection
  • Thermal cycling
  • Damp-heat aging
  • Substrate compatibility
  • Shadow-area cure
  • Dispense stability

Request an evaluation

Share your substrates, light source and reliability target.

We can recommend a starting platform, sample plan and practical evaluation route. TDS/SDS and confirmed specifications are available for qualified projects.

Discuss your application ↗