Problem

A Korean camera module maker needed a robust inline solution to apply dust‑capture adhesive and reinforcement glue to IR filter assemblies. Manual dosing and separate stations caused low UPH, inconsistent glue coverage, particle contamination during handling, and variable cure quality that led to rework and yield loss.

Cause 

Key causes were operator variability, fluid viscosity drift in small‑volume dispensing, and process handoffs between separate machines that introduced alignment errors and particle ingress. The client required a single cell capable of performing two sequential processes—dust-capture (capture glue) and structural reinforcement—while maintaining precise dot/line geometry and repeatable cure performance.

Solution Overview

Mingseal deployed the FS200A Inline Visual Dispensing Machine configured as a dual‑station cell to run two dedicated processes in one footprint: Station A for dust‑capture adhesive application and Station B for reinforcement glue and in‑line pre‑cure. The FS200A’s dual‑head architecture, integrated vision alignment, syringe cartridge feeding with heated sleeves, and piezoelectric jet valve compatibility provided the core capabilities to meet process demands.

Process Design

Dual‑station flow: Two independent tracks allow Station A and Station B to operate in parallel on different boats or run synchronously on the same boat for mixed workflows, doubling UPH compared to a single‑station layout.
Dust‑capture glue (Station A): Piezo jetting deposits micro‑dots and short lines around the IR filter perimeter to capture particulate during downstream handling. The vision system verifies dot count, position and dot diameter immediately after dispense.
Reinforcement glue + pre‑cure (Station B): The second head applies structural epoxy fillets at lens corners and critical mounting points. Heated syringe sleeves maintain consistent viscosity; optional UV/thermal pre‑cure reduces flow before final cure.
Recipe and MES integration: Recipes for dot/line patterns, jet pulse, syringe temperature, and vision tolerances are stored and managed via MES/PLC, ensuring traceability and fast changeovers.

Integration and Control

The FS200A’s high-resolution motion system delivers 1mm repeatability across the required micro‑dispense range, while the integrated vision aligns each IR filter and compensates for XY/Tilt offsets. Dual independent valves let the two stations work with different adhesive chemistries (capture glue vs. epoxy) without cross-contamination. Fast metering and separated tracks keep one lane running if the other requires maintenance, preventing full-line stoppage.

Results

Increased UPH: Dual-station layout produced up to a 2× throughput increase versus the previous single-station workflow, meeting the customer’s volume targets with existing footprint.
Consistent dust-capture performance: Vision‑verified micro-dots achieved tight dot-size control, enabling predictable particulate capture and reducing downstream cleaning rejects.
Improved structural reliability: Reinforcement fillets applied with controlled mass and pre‑cure lowered lid delamination and vibration‑induced failures during mechanical testing.
Reduced rework and material waste: Syringe heating and closed‑loop metering stabilized viscosity, reducing over‑apply and stringing incidents.
Higher line availability: Separated track design and dual independent heads allowed continued operation during localized maintenance, improving overall equipment effectiveness (OEE).

Best Practices for Korean Camera Lines

Validate capture‑glue rheology and piezo pulse settings in FAT to lock dot mass and adhesion behavior.
Use vision AOI thresholds tied to downstream optical performance checks to close the quality loop.
Implement pre‑cure recipes in Station B to control flow before final cure, especially for tight KOZs.
Leverage MES logging for SPC-driven predictive maintenance of piezo valves and syringe heaters.

Conclusion 

For Korean smartphone camera manufacturers, FS200A provides a compact, dual‑station inline solution that integrates dust‑capture and structural reinforcement in a single automated cell. With piezo jet compatibility, syringe temperature control, and vision‑guided precision, FS200A delivers higher UPH, consistent adhesive performance, and improved yield—facilitating a reliable transition from manual to automated camera-module assembly. Contact Mingseal for pilot trials and process qualification for your IR filter and module designs.