AI Technology Unveils Enhanced Thermal Dissipation Molding Underfill for HBM and 3D DRAM to Boost Package Reliability

September 6, 2026

AI Technology, Inc. USA

Overview

AI Technology, Inc. (AIT) has announced a new Molding Underfill (MUF) with significantly enhanced thermal dissipation, targeting advanced semiconductor packaging like HBM, 3D DRAM, and AI processors. This MUF utilizes a specially formulated liquid epoxy mold compound (EMC) with low viscosity, low CTE, and thermally modified particles to optimize thermal management and reliability in high-density packages. This innovation addresses critical thermal and thermomechanical stress challenges in high-performance computing, promising improved performance and longevity for next-generation semiconductors.

In Depth

Key Findings

AI Technology, Inc. (AIT) has introduced a groundbreaking Molding Underfill (MUF) technology specifically designed for advanced semiconductor packaging, including High Bandwidth Memory (HBM), 3D DRAM, and chiplet-based AI processors. This novel MUF significantly enhances thermal dissipation within high-density packages, leveraging a specially formulated liquid epoxy mold compound (EMC) that features low viscosity, a low coefficient of thermal expansion (CTE), and incorporates thermally modified particles. This development is crucial for managing the intense heat generated by modern high-performance chips and improving the thermomechanical reliability of advanced packages.

Technical Details

The AIT-developed MUF facilitates liquid underfilling and encapsulation during the Mass Reflow (MR) process, optimizing heat dissipation in stacked chip architectures. The core innovation lies in its unique epoxy mold compound, engineered with thermally modified particles optimally dispersed to create efficient thermal pathways from the chip to the external package. This mechanism actively mitigates hot spot formation, thereby reducing the risk of device performance degradation and premature failure.

Low Viscosity: Ensures complete and uniform filling of the minute gaps and complex geometries found in advanced packages, preventing the formation of voids that can compromise thermal and mechanical integrity.
Low CTE: Minimizes the mismatch in thermal expansion between silicon chips and substrates, effectively suppressing stress and warpage caused by thermal cycling, which is vital for long-term package reliability.
Thermally Modified Particles: These specialized fillers are optimized for dispersion within the epoxy matrix, imparting superior thermal conductivity compared to conventional EMCs, thus enhancing heat removal capabilities.

In addition to the MUF, AIT also offers a range of complementary materials, including unfilled, non-conductive film adhesives for stacked chips and compressible phase-change thermal interface materials (TIMs) containing diamond and boron nitride fillers. These materials are tailored for various advanced packaging architectures, such as Fan-Out Wafer-Level Packaging (FOWLP) and Panel-Level Packaging (FOPLP), ensuring comprehensive optimization of package reliability and thermal management.

Background & Context

The relentless demand for higher performance in AI, high-performance computing (HPC), and 5G/6G applications has led to an exponential increase in semiconductor chip power density and integration complexity. Consequently, managing the heat generated by these chips has become a paramount challenge, pushing the limits of traditional packaging materials. Inadequate thermal management directly leads to performance throttling, reduced reliability, and shorter product lifespans, compelling material suppliers to innovate with more sophisticated solutions.

Strategic Significance & Outlook

AIT’s thermally enhanced MUF technology represents a foundational advancement for maintaining the reliability and performance of future semiconductors, particularly AI processors and high-bandwidth memory, where performance demands will continue to escalate. This material offers increased design flexibility in thermal management solutions, from chip-level to system-level, contributing to the miniaturization, enhanced performance, and energy efficiency of next-generation electronic devices. The AI/HPC sector, currently grappling with thermal bottlenecks, is expected to be a primary driver for the expanded adoption of such advanced thermal management solutions.

Source: https://www.aitechnology.com/molding-underfill-muf-for-mass-reflow-mr-liquid-underfilling-encapsulation-with-thermal-dissipation-enhancement/

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