Fundamental investigation of lid interactions with TIM1 and adhesive materials for advanced flip chip packaging
Notice bibliographique
Résumé
As flip chip packaging evolves, there are increasing demands on the overall package design in order to maintain reliability while the devices themselves are increasing in performance. A key aspect for advanced flip chip applications that require a heat sink, is to ensure the integrity of the interface between the silicon chip and the heat sink (often a referred to as a lid or heat spreader). The challenging trends for these types of packages include: increased silicon surface areas, changes in substrate type(s), thinner overall package z-heights, and other thermo-mechanical demands which can all result in new, or re-introducing previously-solved, mechanisms that disrupt the thermal interface which is critically important for sufficient heat dissipation. In this research, the relationship between the lid and the materials at this interface is investigated. There are two types of lid/material interactions studied: the lid-to-TIM1 interface and the interface at the perimeter where, for large devices, an auxiliary band of adhesive/sealant is used to improve package reliability. Among the various techniques identified to assess the interactions at this interface, the adhesion performance is considered a primary method. A modified die shear adhesive method was optimized specifically for this application and determined to be the most suitable among several competing adhesion characterization methods. This investigation also includes characterization of the adhesion performance for numerous types of materials using standard microelectronics industry reliability conditions. It was found that following the failure modes, in particular, (as opposed to only the adhesive force data) at select intervals during this battery of stress testing can improve understanding of the interfacial behavior. Additionally, correlation studies were conducted to compare adhesion results with the other techniques typically used at the flip chip package-level, such as manufacturing line parametric tests (e.g. acoustic microscopy) or in the failure analysis lab (dye penetration, cross-sectioning, etc). Finally, an analytical chemistry assessment of the lid surface functionalities was also performed in order to correlate potential chemical interactions with this material set. Subsequently, the feasibility of improving the compatibility between the lid surfaces and the materials was evaluated. A variety of cleaning methods and other techniques were utilized to identify which methods seem to provide some performance benefits without significantly compromising other aspects of the overall package robustness.
Récupéré en direct depuis OpenAlex et désinversé. Les résumés ne sont pas conservés dans cette base de données : les index inversés représentent 8,6 Go des 9,3 Go de texte de la base, et le serveur dispose de 13 Go libres.
Comment cette classification a été obtenuedéplier
Prédiction distillée sur la base complète
Imitation des enseignantsNi prévalence calibrée, ni vérité terrain. Validation humaine à venir. Apprise à partir de 10 348 étiquettes directes de Codex et de 10 348 étiquettes directes de Gemma. Le mode candidate est l'union des têtes enseignantes seuillées; le consensus est leur intersection. Ces sorties portent le statut machine_predicted_unvalidated et ne sont ni des étiquettes humaines ni des étiquettes directes de modèles de pointe.
Scores Codex et Gemma par catégorie
| Catégorie | Codex | Gemma |
|---|---|---|
| Métarecherche | 0,000 | 0,000 |
| Méta-épidémiologie (sens strict) | 0,000 | 0,000 |
| Méta-épidémiologie (sens large) | 0,000 | 0,000 |
| Bibliométrie | 0,000 | 0,000 |
| Études des sciences et des technologies | 0,000 | 0,000 |
| Communication savante | 0,000 | 0,000 |
| Science ouverte | 0,000 | 0,000 |
| Intégrité de la recherche | 0,000 | 0,000 |
| Charge utile insuffisante (le modèle a refusé de juger) | 0,000 | 0,000 |
Scores machine (provisoires)
Les deux têtes enseignantes du modèle étudiant, lues sur ce travail. Un score ordonne la base pour la relecture; il n'affirme jamais une catégorie, et le statut de validation accompagne chaque rangée tel quel.
Scores de référence d'un modèle non mature (critères de maturité non atteints, 7 itérations). Un score ordonne; il n'affirme jamais une catégorie.
score_only:v0-immature-baseline · tel quel depuis la passe de notation : score_only signifie que le nombre peut ordonner les travaux, et qu'aucune étiquette de catégorie n'en découleClassification
machine, non validéePrédiction automatique; un appel candidat d’une seule tête enseignante, pas un consensus.
Le détail, modèle par modèle et score par score, se trouve en fin de page sous « Comment cette classification a été obtenue ».