Configurable 300 mm Substrate Chuck for Precision Die-to-Die Bonding Posted on November 6, 2026 (November 6, 2026) by Raymundo Rabago ☰ Quick Links × Quick Links E-Store Request Quote Request Sample Contact Technical Support Product Selection Wizard Calculate Number Of Devices/Carrier Gel-Pak Brochure Gel-Pak TXF Textured Film for Advanced Die Bonding Challenge A company specializing in advanced die bonding needed to pre-orient die for a multi-chip module, then maintain each die’s X-Y position and rotational orientation thr ough stage movement, optical alignment, and the die-to-die bonding operation. The substrate chuck had to provide a flat, rigid equipment interface while the die-contact surface delivered secure temporary retention, unobstructed top and side access, and controlled release for the next process step. Established chuck strategies introduced process tradeoffs: Vacuum micro-grooves require vacuum infrastructure and compatible contact geometry. Precision-machined pockets are tied to a specific device geometry and module layout. UV-release or thermal-release films require a defined activation step before removal. The process gap was the lack of a single fixturing surface that combined configurable die placement and secure retention with direct downstream removal. Solution The customer selected TXF textured film laminated onto a rigid 300 mm aluminum plate that served as the substrate chuck. The construction separated two critical fixture functions: Rigid 300 mm aluminum substrate chuck for machine interface, dimensional stability, and planar support TXF textured film laminated to the chuck surface for configurable, pocketless die placement and secure temporary retention Technology Innovation The TXF-laminated chuck creates a hybrid fixture architecture that separates equipment integration from device retention. The aluminum plate provides the rigid tool interface, while the textured film surface holds pre-oriented die without pocket walls, clips, vacuum grooves, or triggered-release chemistry. Key Capabilities Provides a configurable, pocketless placement surface for multiple die sizes and layouts Maintains die position and orientation during high-precision alignment and bonding Preserves an unobstructed field of view for optical alignment cameras Avoids clips or pocket walls around the die perimeter Supports direct pick-and-place removal after bonding Eliminates the need for a dedicated UV or thermal deactivation event before release Benefits of the Hybrid Design Rigid Aluminum Chuck Provides the 300 mm equipment interface Maintains flatness and dimensional stability Supports precision alignment and stage movement TXF Textured Film Enables configurable die placement Holds die securely during optical alignment and bonding Supports controlled downstream pick-and-place removal Development Process Gel-Pak worked with the customer to define fixture requirements around die retention, positioning accuracy, machine compatibility, and downstream release. Key engineering objectives included: Secure temporary retention during stage movement and bonding Accurate die positioning and rotational stability Compatibility with optical alignment systems Direct access to device top and side surfaces Simplified release without a dedicated UV or thermal deactivation step Business Impact By using TXF on a standard 300 mm aluminum substrate chuck, the customer created a configurable temporary fixture rather than a device-specific nest. This approach can help: Reduce dependence on machined pocket geometry Support multiple die layouts on a common surface Preserve optical and mechanical access during bonding Remove a separate UV or thermal release operation from the downstream handoff Simplify the transition from die pre-orientation to bonding and pick-and-place transfer Platform Advantage Unlike a recessed-pocket chuck built around one die size and matrix, the continuous TXF surface can be populated according to the actual bonding recipe. Unlike triggered-release films, TXF is intended to support removal without a separate deactivation cycle. The result is a simpler fixture architecture connecting die pre-orientation, bonding, and downstream pick- and-place. Applications Multi-chip module assembly Advanced packaging and heterogeneous integration Die-to-die bonding Temporary fixturing of pre-oriented bare die Process development and new-product introduction Automated bonding and downstream pick-and-place workflows Key Takeaway This project demonstrates how Gel-Pak textured film technology can be paired with a rigid chuck architecture to create a configurable temporary fixture for advanced die bonding. By combining structural stability with a pocketless retention surface, manufacturers can maintain die position through alignment and bonding while simplifying downstream release and transfer. Result: A configurable die-to-die bonding fixture that supports precision placement, secure temporary retention, and streamlined transfer without device-specific pocket tooling or a separate release-activation step. Gel-Pak's experienced technical support staff is available to answer your questions related to products or associated applications. Contact Us!
