Optoelectronics and display display bezel underfill: UV-curing structural adhesive case study

Background

An equipment integrator / manufacturer in Optoelectronics and display needed to underfill on a display bezel using UV-curing structural adhesive.

Process challenge

Particle fillers settling and clogging after long idle periods.

Solution

We recommended Dispensing Valve + Glue Distributing Machine, with tuning rotor/stator fit and flow path geometry to the filler particle size.

Result

• Potting void defects reduced from 4% to below 1%.
• Shot volume 0.1 mL with deviation within ±2%.
• Cycle time 0.8 s per dot with no stringing or dripping during continuous running.

Project facts

• Industry: Optoelectronics and display
• Workpiece: display bezel
• Fluid: UV-curing structural adhesive
• Process: underfill
• Recommended lines: Dispensing Valve, Glue Distributing Machine