Changzhou Mingseal Robot Technology Co., Ltd.

Problem A Taiwan electronics OEM scaling panel-level fan-out panel-level packaging (FoPLP) from prototype to mass production faced repeatability and throughput challenges. Critical processes—underfill, coating and flux spray—required consistent glue shape, full-panel coverage, and robust handling of severely warped panels up to ±10 mm. Existing benchtop dispensers and die-level tools could not meet panel throughput, AOI traceability, or unmanned material flow demanded by modern cleanroom fabs. Cause Panel-level dispensing introduces large-area motion, thermal gradients, and handling complexity that magnify small process variances. Key failure modes included inconsistent bead geometry across the panel, capillary underfill voids from poor thermal control, nozzle collisions caused by panel bow, and lost traceability during manual load/unload handoffs. The lack of automated material handling (PGV/AGV/OHT) and limited anti-warp compensation made scaling risky and raised yield loss and rework costs. Solution: SS300 Panel‑Level Dispensing System  Mingseal deployed the SS300—the first domestically produced dispensing system purpose-built for FoPLP—to a Taiwanese FoPLP line to solve throughput, warpage, and traceability constraints. Core deployments and process adaptations included: Panel compatibility and throughput: SS300 supports large panels (510×515 mm and 600×600 mm) with automated loading/unloading and dual-path conveyors to maintain steady line flow for high UPH processing. Warpage compensation: An active anti-warp stage with ±10 mm compensation kept nozzle-to-surface distance constant across bowed panels, eliminating nozzle strikes and ensuring uniform bead geometry across the entire panel area. Multi-process flexibility: Configured for Underfill, Coating and Flux Spray in a single cell, SS300 allowed sequential or parallel process recipes to run without manual handoffs. Preheating and operation heating modules stabilized substrate temperature to optimize capillary underfill behavior and reduce void formation. Integrated AOI and closed-loop control: Glue-shape AOI immediately following dispense detected fillet height, spread and bead continuity. Real-time feedback adjusted dispense parameters (dot size, speed, heater profile) to maintain process windows and log SPC data. Industry connectivity and automation: PGV/AGV/OHT interfaces and semiconductor-standard communication enabled MES traceability, recipe download, lot tracking and unmanned handling for lights-out operation. Implementation and Results  SS300 was integrated inline with upstream panel aligners and downstream curing ovens. Recipes were developed per panel family to tune dispense paths, nozzle height maps, heater zones and AOI tolerance thresholds. Key results from the Taiwan deployment: Yield improvement: Void and bead defect rates decreased by over 65% after Z-compensation and temperature-controlled underfill, improving first-pass yield on thermal cycling tests. Throughput gains: Automated panel handling and multi-process capability increased effective UPH by ~50% versus die-level workflows, while reducing operator touchpoints. Reduced rework and downtime: AOI-driven closed-loop adjustments cut manual rework and process drift, shortening root-cause resolution time through SPC logs. Robustness to warpage: ±10 mm anti-warp capability eliminated the need for upstream sorting or conservative process derating for bowed panels, saving handling steps and cycle time. Application Guidance for Taiwan FoPLP Lines Establish panel-specific Z-maps during FAT to exploit full ±10 mm compensation range. Use preheat profiles to standardize resin viscosity for capillary underfill; document in MES recipes. Configure AOI thresholds correlated to post-cure X-ray or acoustic inspection to close the quality loop. Integrate PGV/AGV/OHT early for continuous flow and reduced manual intervention. Conclusion  For Taiwanese FoPLP manufacturers transitioning to panel-level volume production, the SS300 delivers a domestically engineered, high-precision platform that addresses warpage, throughput and traceability simultaneously. By combining large-panel handling, ±10 mm anti-warp compensation, multi-process capability and AOI-backed closed-loop control, SS300 enables reliable, high-yield FoPLP underfill, coating and flux spray production—accelerating scale-up while protecting yield and cleanroom efficiency. Contact Mingseal for pilot qualification and recipe customization for your panel families.

Background A semiconductor packaging house in Malaysia selected Mingseal’s GS600SUA—the first domestically produced dispensing system qualified for mass FCBGA CUF process high-volume production. The customer needed ultra-fine underfill control for large-format FCBGA assemblies while maintaining cleanroom compatibility, tight throughput targets, and full MES traceability. Challenge  FCBGA underfill requires precise capillary flow control and ultra-low dot variance to avoid voids and ensure long-term reliability in thermal cycling. The line faced three constraints: (1) minimizing void incidence across mixed die sizes and pitches, (2) achieving micro-volume control down to sub-microgram per dot for consistent capillary action, and (3) increasing units-per-hour (UPH) without expanding cleanroom footprint. Additionally, substrate handling needed secure clamping and localized heating to accelerate flow and cure. Solution: GS600SUA Inline Jet Underfill Machine  Mingseal deployed the GS600SUA in a dual-track inline configuration configured specifically for FCBGA underfill. Key features used in the Malaysian deployment: Precision piezo jetting capable of micro-dots (down to 0.001 mg/dot) to control capillary uptake and fill profiles. Dual-track layout to increase UPH while maintaining a compact footprint for cleanroom optimization. Bottom heating and vacuum-assisted substrate holding to stabilize thermal gradients and promote void-free capillary underfill. Real-time glue weight monitoring and closed-loop jet control to detect drift and maintain dot consistency across long runs. Maximum boat handling of 325 × 162mm to accommodate customer substrate carriers without changeover delays. Semiconductor MES compatibility and standard communication protocols for recipe management, traceability, and SPC data logging. Integration and Process  The GS600SUA was integrated inline with automated handlers and preheat stations. Processes were developed for multiple FCBGA configurations: dot patterns, jet frequency, and localized bottom heating profiles were tuned per package layout. Vacuum-assisted holding eliminated micro-lift and improved contact during capillary intrusion. Real-time glue-weight feedback adjusted jet pulse parameters automatically to hold dot mass within spec across downtimes, nozzle changes, or environmental variation. Results Void Reduction: Inline bottom heating combined with micro-dot control reduced void rates by over 75% compared to the legacy benchtop process, improving thermal reliability in JEDEC thermal cycling. Throughput: Dual-track operation increased effective UPH by ~60% while occupying a single-machine footprint compatible with the customer’s cleanroom constraints. Yield and Rework: Consistent dot mass and improved capillary behavior reduced downstream rework and scrap, raising first-pass yield significantly. Process Stability: Real‑time weight monitoring and MES logging enabled quick root-cause analysis for anomalies, shortening yield-loss response time. Lower TCO: Local production support, fast spare availability, and reduced integration lead times lowered total cost of ownership versus imported alternatives. Best Practices and Recommendations Validate dot mass and bottom heating profiles across representative substrate warpage ranges during FAT to create robust recipes. Use inline X-ray or acoustic inspection post-underfill to verify void reduction and feed results into SPC dashboards. Schedule predictive nozzle maintenance driven by weight-drift metrics to prevent unscheduled stops. Leverage MES traceability to correlate dispense parameters with field reliability metrics for continuous improvement. Conclusion  For Malaysian FCBGA manufacturers transitioning from pilot to mass production, the GS600SUA provides a domestically produced, process-hardened underfill solution that combines micro-volume precision, dual-track throughput, and substrate-focused controls (vacuum holding and bottom heating). The deployment delivered measurable improvements in void rate, yield, and UPH while simplifying cleanroom integration and reducing total ownership cost. 

Problem A semiconductor assembly house in Penang, Malaysia faced capacity and yield challenges moving fan-out wafer-level packaging (FoWLP) from pilot to volume production. Key pain points included inconsistent underfill dispensing across full 8–12" wafers, limited equipment capable of coping with wafer warpage, and high cost/lead time for foreign dispensing systems. The customer required a reliable, high-throughput dispensing solution for underfill, coating, flux spray and Dam & Fill processes that could handle wafer-scale variability while meeting automotive and consumer reliability targets. Cause FoWLP underfill and related processes demand precise volumetric dispensing over large wafer areas. Traditional benchtop dispensers lack the throughput, warpage compensation and process repeatability required for wafer-level mass production. Inconsistent bead profiles and voids arise from poor nozzle control, inadequate compensation for wafer bow (warpage), and systems not designed for continuous wafer handling. Importing turnkey systems added long lead times and support complexity for local engineers. Solution SS101 — the first domestically produced dispensing platform specifically certified for FoWLP underfill mass production. Key capabilities applied for the Penang line: Wafer compatibility: supports both 8" and 12" wafers without hardware changeover, enabling mixed-line production and future capacity scaling. Warpage compensation: active pick-and-place stage with ±3 mm warpage handling ensures consistent nozzle-to-surface distance across bowed wafers, preventing nozzle crashes and variable bead geometry. Multi-process support: configurable modules for Underfill, Coating, Flux Spray and Dam & Fill allow the same cell to perform sequential process steps or be integrated into a clustered line. High-precision volumetric control: servo-driven screw and advanced motion control deliver repeatable bead profiles and volumetric accuracy suitable for void-free underfill filling. Domestic service and fast spares: local manufacture reduces lead time for spare parts and supports rapid on-site tuning with local application engineers. Integration and Process Implementation SS101 units were installed in a cluster with automated wafer loaders and inline pre-bake ovens. For underfill, the system used a synchronized dispense-robot profile: nozzle start/stop points and Z-compensation were programmed per wafer map. Flux spray and coating modules were configured with recipe-controlled spray patterns and flow rates. Dam & Fill sequences used dual-path dispense heads to form containment dams and complete bulk fill, minimizing capillary voids. The system controller provided centralized recipe management and traceability, logging dispense mass, nozzle temperature and pressure for each wafer lot. Results and Benefits Yield improvement: void incidence in underfill drops by over 70% due to precise Z-compensation and volumetric control, improving thermal fatigue reliability in subsequent testing. Throughput increase: SS101’s wafer-level continuous dispensing reduced cycle time per wafer versus die-level dispensing, enabling higher line capacity without adding operators. Lower TCO and faster support: local manufacturing reduced capital lead time and cut spare-part replacement time from weeks to days, increasing equipment uptime. Process flexibility: single platform performing underfill, coating, flux spray and Dam & Fill simplifies line layout and reduces integration cost. Robustness to warpage: ±3 mm warpage handling removed the need for pre-sorting bowed wafers, saving upstream handling steps. Recommendations for Malaysian FoWLP Lines Run initial wafer qualification across representative bow profiles and materials to fine-tune Z-compensation maps. Use inline X-ray or acoustic inspection after underfill to validate void reduction and close the process loop. Standardize recipes for wafer sizes and material families to speed changeovers between 8" and 12" runs. Leverage local support for preventive maintenance schedules and rapid nozzle replacement. Conclusion  For Penang-based FoWLP manufacturers moving to volume underfill production, the SS101 provides a domestically produced, high-precision solution that addresses warpage, throughput and serviceability challenges. By combining wafer-level handling, ±3 mm warpage compensation and multi-process flexibility, SS101 enables reliable, scalable FoWLP underfill, coating and Dam & Fill production — reducing defects and shortening time to market. Contact Mingseal’s regional team for a pilot deployment and process qualification tailored to your assemblies.