VR2R-0115_r1

VR2R-0115

① SA Source

• Source: 開啟完整 SA 文章
• Section: Rubin
• Line hint: 91

Context Before

For the mechanical structure of the Rubin package, upgrades have also been made with the addition of an upgraded heat spreader and a stiffener. This compares to Blackwell B200 and B300 packages that only have a heat spreader lid. The heat spreader lid allows more equal distribution of heat exiting the package.

Evidence

It also provides mechanical support for the package to prevent warpage.

Context After

For Rubin, the heat spreader lid is a module made up of two separate lids. Beside the heat spreader lid, a stiffener is added to the package structure to provide even more mechanical support to avoid warpage. At the surface of the heat spreader lid, there will also be a layer of electroplated gold. The reason for this is to prevent corrosion from liquid metal TIM2, which is between the heat spreader lid and the cold plate.

② Atomic Claim

它也能提供 package mechanical support，以避免 warpage。

• Epistemic Mode: ASSERTED
• Mapping Status: PARTIAL

③ Semantic Frame

{
  "attribute": "PREVENTED_BY_PACKAGE_MECHANICAL_SUPPORT",
  "context_nodes": [],
  "entity": {
    "id": "04_knowledge_base/Warpage",
    "label": "warpage"
  },
  "frame_type": "ATTRIBUTE",
  "qualifiers": {
    "condition_text": "It 指涉 heat spreader lid，該元件未 canonicalized",
    "numeric_mentions": [],
    "temporal_mentions": []
  },
  "value": {
    "numeric_mentions": [],
    "value_text": "heat spreader lid 提供 mechanical support 以避免 warpage。"
  }
}

④ Canonical Entity Mapping

Role	Surface Label	Canonical Target
entity	warpage	Warpage

⑤ Human Review

請在 Properties 逐項確認：

• 原文 → Atomic Claim 是否忠實
• Atomic Claim → Semantic Frame 是否忠實
• Canonical Entity mapping 是否正確
• Epistemic mode 是否保留原文語氣
• 最後選擇 review_action

Review state

Markdown 內文不是正式 approval。只有 Apply bridge 寫入的 Decision Ledger event 才是正式決策。