Changzhou Mingseal Robot Technology Co., Ltd.

Problem A Texas-based advanced packaging house producing large FCBGA modules (>50 × 50 mm) for AI/HPC applications needed to scale capillary bottom-fill (underfill) from pilot to production while preserving yield for high-value, large-area packages. Typical challenges included void formation across large die areas, inconsistent glue weight during long runs, and limited throughput from single-valve systems—risks that directly affect thermal reliability and cost per good device. Cause  Large-package bottom-fill magnifies several process issues: uneven capillary flow due to temperature gradients; glue dehydration or viscosity drift during extended cycles; nozzle clogging and dot mass drift; and limited patternability for tight KOZ (keep-out zone) and small gap edge fills. Legacy single-track, benchtop or small inline systems lacked the multi-valve parallelism, automated glue-weight compensation, and inline AOI needed to maintain dot consistency and low void rates across larger boats and mixed layouts. Solution: GS700SU Deployment for Texas FCBGA Underfill  Mingseal deployed the GS700SU—the first domestically produced dispensing system qualified for large-package FCBGA underfill—into the Texas facility to address capacity and reliability simultaneously. Key system features applied: High UPH architecture: Dual-station dispensing valves in a four-track configuration (supporting dual-head operation) increased throughput up to 3.7× compared with GS600SUA baselines. For 325×325 mm boats the system runs as dual-track/four-workstation/double-head; for 325×162 mm boats it supports four-track/eight-workstation/double-head operation, enabling flexible line balancing for mixed product families. Precision underfill control: Proprietary underfill valve plus tilt-dispensing module and programmable dispense patterns achieved KOZ < 200 μm and precise edge fills for large packages with tight passive layouts.Thermal and material management: Closed-loop glue temperature control and intelligent sequencing for product order and replenishment prevented viscosity drift and minimized void formation during long campaigns. Inline inspection & closed-loop correction: An independent AOI station inspects glue shape and coverage per unit; automatic glue-weight adjustment, nozzle glue detection and unit trial dispenses ensure consistent dot mass and trigger maintenance only when needed. Integration and Process GS700SU was integrated into an automated handler line in Texas with pre-heat and post-cure ovens. Recipes were tuned per package size and gap geometry—dot size, frequency, tilt angle and travel path—while bottom heating profiles were adjusted to promote uniform capillary flow. Dual-head mode enabled simultaneous fill paths to reduce fill time for larger dies and decrease thermal exposure. Results and Metrics Throughput uplift: Effective UPH improved by approximately 3.7× over the GS600SUA baseline under matched process conditions, enabling higher capacity without expanding cleanroom footprint.Void reduction: Combined temperature control and AOI-driven closed-loop adjustments reduced underfill void incidence by over 70% in qualification runs, improving thermal cycling pass rates.Process stability: Automatic glue-weight compensation maintained dot mass within target windows across multi-shift runs, reducing material waste and rework.Flexibility: Support for large boats (325×325 mm and 325×162 mm) and multi-track configurations allowed mixed-model production with minimal changeover time. Best Practices for Large FCBGA Lines Create package-specific dispense recipes during FAT that include KOZ mapping and tilt angles to protect adjacent components.Use AOI feedback and SPC logging to drive predictive nozzle maintenance based on weight drift rather than fixed intervals.Sequence builds to minimize material changeovers and exploit GS700SU’s intelligent replenishment scheduling.Validate bottom-heating profiles across representative substrates to ensure uniform capillary performance. Conclusion  For Texas manufacturers producing large, high-value FCBGA packages, GS700SU delivers a production-proven, high-throughput underfill solution that combines multi-track parallelism, precise KOZ capability (KOZ < 200 μm), closed-loop thermal and glue control, and inline AOI to cut voids and increase UPH substantially. Contact Mingseal for pilot trials, recipe qualification, and deployment support tailored to your large-package underfill programs.

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.