Mesogenic Epoxy Compound for Semiconductor Heat Dissipation
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Solution Overview
Problem
Existing epoxy molding compounds (EMCs) with high-thermal-conductivity inorganic fillers fail to significantly enhance thermal conductivity, limiting the heat dissipation capabilities of semiconductor packages.
Innovation Solution
Incorporation of an epoxy compound with an aromatic ring structure, featuring a mesogenic unit and a spacer, which enhances phonon transfer pathways and suppresses scattering, resulting in improved thermal conductivity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If high-thermal-conductivity inorganic filler is added to EMC, then thermal conductivity is expected to increase, but the increase is insignificant
Solution Approach 1:
The invention changes the chemical structure parameters of the epoxy compound by introducing aromatic rings, mesogenic units, and spacers. This structural modification alters the thermal properties of the resin itself, enabling phonon transfer pathways that significantly enhance thermal conductivity from the base material level, rather than relying solely on filler addition.
Solution Approach 2:
The invention creates a composite structure at the molecular level by combining aromatic rings, mesogenic units, and spacers within the epoxy compound architecture. This multi-component molecular composite enables synergistic effects where the aromatic rings provide thermal conduction pathways, mesogenic units organize molecular alignment, and spacers optimize the structural arrangement for phonon transfer.
2Temperature
If conventional epoxy resin is used, then processing characteristics are maintained, but heat releasing characteristics are insufficient
Solution Approach 1:
The invention modifies the epoxy compound structure by incorporating aromatic rings, mesogenic units, and spacers, which changes the thermal parameters while maintaining processability. The molecular weight and functional group distribution are optimized to ensure the compound remains workable during manufacturing while achieving superior heat dissipation in the cured state.
3Stability of the object's composition
If inorganic filler is added to improve thermal conductivity, then thermal stability is expected to improve, but the effect is limited
Solution Approach 1:
The invention changes the fundamental thermal parameters of the epoxy compound by introducing aromatic rings, mesogenic units, and spacers. This approach improves thermal stability through intrinsic molecular properties rather than relying on filler addition, thereby achieving better thermal performance with simpler material composition and fewer processing steps.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The epoxy compound and its cured products exhibit significantly increased thermal conductivity, up to 18 W/mK, enhancing the thermal stability and heat release characteristics of semiconductor devices.
Implementation Method 1
Incorporation of an epoxy compound with an aromatic ring structure, featuring a mesogenic unit and a spacer, which enhances phonon transfer pathways and suppresses scattering, resulting in improved thermal conductivity.
Data Source
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AI summary
An epoxy compound having an aromatic ring represented by Formula 1 or Formula 2, a composition prepared from the epoxy compound, a semiconductor device prepared from the epoxy compound, an electronic device prepared from the epoxy compound, an article prepared from the epoxy compound, and a method of preparing the epoxy compound: Formula 1 E1-(M1)a1-(L1)b1-(M2)a2-L2-A1-L3-(M3)a3-(L4)b2-(M4)a4-E2 Formula 2 E3-(A2)c1-(L5)b3-(M5)a5-L6-(M6)a6-L7-(M7)a7-(L8)b4-(A3)c2-E4 In Formulae 1 and 2, M1, M2, M3, M4, M5, M6, M7, A1, A2, A3, L1, L2, L3, L4, L5, L6, L7, L8, E1, E2, E3, E4, a1, a2, a3, a4, a5, a6, a7, b1, b2, b3, b4, c1, and c2 are the same as defined in the detailed description.