Customer scenario

A leading Korean smartphone camera module supplier needed a robust inline solution for applying dust‑capture adhesive around infrared (IR) filter edges. The IR filter capture‑ring requires ultra‑clean, repeatable bead geometry to trap particulates without contaminating the optical path. The customer also wanted higher throughput: the line needed to support two distinct process steps (edge dust‑capture glue and protective seal) in parallel while maintaining sub-millimeter placement accuracy and strict process traceability.

Mingseal FS200A solution

Mingseal delivered the FS200A Inline Visual Dispensing Machine configured as a dual‑station, dual‑head cell to address both precision and throughput needs. The system’s dual independent valve architecture and separated track design enabled the customer to run two process stations concurrently—one head dedicated to the IR filter dust‑capture bead and the second to the protective seal—doubling effective UPH without increasing floor space.

Key process features and configuration

• Dual independent dispensing heads: Two piezoelectric valves were installed—one tuned for ultra‑fine dust‑capture beads around the IR filter perimeter, the other for a slightly larger protective seal bead. Independent heads allow different adhesive chemistries and shot parameters to run simultaneously, minimizing cycle time and simplifying recipe management.

• Dual‑station parallel workflow: The FS200A’s dual tracks and two processing stations enable true parallel processing: while Station A performs dust‑capture dispensing and inline inspection on one carrier, Station B simultaneously dispenses protective sealant on the next. This configuration effectively doubles throughput (UPH) compared with single‑station approaches.

• Piezo valve tuning for demanding glue requirements: Piezoelectric jetting was selected to meet the customer’s low‑volume, high‑repeatability needs. Valve pulse shaping, back‑pressure control and nozzle selection were optimized to produce consistent droplet sizes and continuous bead profiles without stringing. The piezo valves support rapid metering for fast cycle times while maintaining sub-microliter dose precision required for IR filter edges.

• Temperature‑controlled syringe feeding: To stabilize viscosity and avoid shot variation over long runs, the system implemented heated sleeves and syringe cartridges where required. Temperature control ensures predictable wetting and bead profile, crucial for optical cleanliness and adhesion reliability.

• Integrated vision alignment and Smart AOI: High‑resolution vision alignment locates fiducials and precisely follows filter edges, ensuring bead placement stays within tight tolerances. Inline AOI verifies bead width, continuity and edge clearance immediately after dispensing; any out‑of‑tolerance events trigger automated rework or recipe adjustments.

Quality, traceability and uptime advantages

• Separated track design for uninterrupted production: If one station requires maintenance or recipe change, the other track can continue processing, minimizing full‑line downtime and improving overall equipment effectiveness (OEE).

• Recipe locking and MES integration: Dispense parameters, images and inspection logs are stored and exportable to MES/PLC systems for production traceability and failure analysis—supporting high-mix, high-volume requirements typical in Korean smartphone supply chains.

• Yield and reliability improvements: Precise piezo dispensing combined with temperature stabilization and vision‑guided placement significantly reduced particle ingress risks and rework caused by misapplied beads. The result is improved first‑pass yield and reduced downstream defect escapes.

Conclusion 

For Korean camera module manufacturers requiring meticulous adhesive control around IR filters, the FS200A provides a compact, dual‑station solution that combines piezo valve micro‑dosing, temperature‑stabilized syringe feeding, and high‑accuracy vision alignment. By supporting two concurrent process stations within a single footprint, the FS200A boosts UPH while ensuring optical cleanliness, placement repeatability, and full production traceability. Contact Mingseal to pilot the FS200A on your IR filter dust‑capture and protective seal applications and validate cycle time, bead geometry and inspection checkpoints for your production line.