86 lines
7.9 KiB
Markdown
86 lines
7.9 KiB
Markdown
# 金刚石散热项目 - 前期调研补充
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更新时间:2026-06-11
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## 1. 面向 SMA 2026 的结论
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Samsung Mobile Advance 2026 要求提交 6 个月 PoC proposal,重点看项目对 Samsung Mobile 产品的潜在影响,并明确关注 AI、XR、Power、Health、Camera、Audio、Foldable、Wearable、Sensors、Materials、Connectivity、Security 等方向。
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对本项目而言,建议主线不是“我们能做金刚石材料”,而是:
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> Bozhi Jinzhuan provides diamond-based thermal packaging modules that can be evaluated in Samsung mobile devices, combining ultra-high thermal conductivity materials with metallization, patterning and module-level integration.
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评审关心的三件事应逐页回答:
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1. Innovation and uniqueness: 金刚石材料 + 表面金属化 + 图形化/封装集成能力,而不是单纯热导率指标。
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2. Value added to Samsung Mobile devices: 降低热点温度、提高热稳定性、缩小散热路径厚度、提升高功率模块可靠性。
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3. Feasibility to integrate: 6 个月内交付可测试样件、结构建议、热测试/仿真对比和 Demo package,而不是开放式研发。
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官方信息入口:<https://developer.samsung.com/open-innovation>
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## 2. 应用场景优先级
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| 优先级 | 场景 | 对应 SMA 领域 | 金刚石方案切入点 | PoC 可交付 |
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| P0 | On-device AI / AP hotspot | AI, Power, Materials | SoC 顶部或近芯片热扩散层,减少局部热点 | Dummy chip + diamond heat spreader thermal comparison |
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| P0 | Galaxy XR / AR optical engine | XR, Power, Wearable | 激光/微投影芯片 submount,以金刚石替代 AlN/Al2O3 | Laser/LED submount sample + junction temperature comparison |
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| P1 | Foldable thin thermal path | Foldable, Materials | 薄型/异形金刚石散热片用于折叠结构有限空间 | Thin/shaped heat spreader coupon + bending/assembly review |
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| P1 | Camera movable module / high-power imaging | Camera, Sensors | 模组热漂移控制,提高传感器/执行器稳定性 | Module-level thermal stability mock-up |
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| P1 | Wearable / health sensor module | Wearable, Health, Sensors | 低热膨胀、高导热载板降低传感器基准漂移 | Sensor substrate coupon + thermal cycling data |
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| P2 | Fast charging / PMIC module | Power | 高热流电源管理模块热沉或封装载板 | PMIC dummy package thermal resistance test |
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领导沟通中提到的两条路线可以作为 PPT 的方案骨架:
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- Route A: chip directly mounted on diamond substrate / diamond-metallized submount.
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- Route B: diamond component as part of another thermal module, such as TEC/VC/thermal spreader stack.
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## 3. 竞品与供应链地图
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| 类型 | 公司 / 产品 | 已知公开信息 | 对我们的启发 |
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| CVD diamond heat spreader | Element Six | 官方称 CVD diamond heat spreaders 用于更高功率密度,热导率可按需求提供 1000-2200 W/(mK),应用包括 RF、GPU、HPC、AI accelerators 等。<https://www.e6.com/products/thermal-management> | 国际头部强调“系统热瓶颈”和“可定制热要求”;我们要避开纯材料规模竞争,突出移动端封装集成。 |
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| CVD diamond substrate | Coherent | 官方 CVD diamond substrate 页面强调高热导、抗热冲击等特性;2026-01-19 发布 bondable diamond thermal management,主张通过直接键合大幅降低界面热阻。<https://www.coherent.com/optics/crystals/bulk-optical-materials/cvd-diamond-substrates>;<https://www.coherent.com/news/press-releases/thermal-management-portfolio-with-high-performance-bondable-diamond-solutions> | “界面热阻”已经成为国际产品叙事重点;我们的 PPT 应把金属化、表面处理、键合/焊接作为差异化,而不是只说 TC。 |
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| CVD diamond / Cu-diamond heat spreader | A.L.M.T. / Sumitomo Electric | 官方列出 CVD-Diamond 厚度 0.2-0.4 mm,热导率 >1000 W/(mK),CTE 2.3 ppm/K;Cu-Diamond 用于半导体激光 submount、功率晶体管基板等。<https://www.allied-material.co.jp/en/products/heatspreader/Material.html> | 竞品已把 CVD diamond 和 Cu-diamond 都产品化,应用多在激光、功率器件;三星移动端 PoC应强调轻薄小型化和模组适配。 |
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| Single crystal diamond submount | Sumitomo Electric | 官方称单晶金刚石可用于 semiconductor laser submount,并可形成各类金属化薄膜用于 chip mounting 和 wire bonding。<https://sumitomoelectric.com/products/diamonds-single-crystal> | 金属化薄膜 + 芯片安装/打线是成熟叙事,可迁移到 XR 光机、摄像/传感器高稳定模组。 |
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| Diamond metal composites | Hi-Rel / DiaCool | Hi-Rel 展示 DiaCool-Ag700、Ag850、Al500、Cu600 等 diamond metal composite thermal spreaders;其 WDAM 合作页面称组合覆盖 500 W/mK 到 2200 W/mK 以上。<https://www.hi-rel.com/diamond-metal-composites>;<https://www.hi-rel.com/wdam-diamond-materials> | 竞品已经按材料系列包装解决方案;我们需要把“可加工、可金属化、可交付样件”讲清楚。 |
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| Ag-Dia heat spreader | Sumitomo Electric U.S.A. | 官方称 Ag-Dia 通过银与金刚石粉末专有烧结工艺实现 600 W/mK 或更高热导率,可用于更大尺寸半导体器件散热基板。<https://global-sei.com/usa/seusa/materials/> | 金刚石-金属复合路线商业化空间明确;我们可把金刚石铜/铝/银作为材料平台而非单一产品。 |
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## 4. 博志金钻差异化表述
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不建议说:
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- “首次提出金刚石用于芯片散热。”
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- “单靠金刚石材料即可解决三星终端散热。”
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- “已确定可进入三星某具体产品结构。”
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建议说:
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- We focus on the last-mile integration of diamond thermal materials into package-level modules.
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- Our differentiation is not only thermal conductivity, but interface engineering, metallization, patterning, solder/bonding compatibility and manufacturable samples.
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- The PoC will validate where a diamond layer or diamond-metal submount creates measurable thermal value in Samsung mobile architectures.
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可强调的公司能力:
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- CVD / diamond thin film route: 10-150 um 超薄金刚石散热片,1600-1800 W/mK 公司材料口径。
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- Diamond package substrate route: Ti/Pt/Au thin film for fine features; Ti/Cu/Ni/Au thick film for higher current/voltage packaging.
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- Diamond-Cu composite route: 600-800 W/mK、CTE 5-10 ppm/K 公司材料口径。
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- Process integration: PVD, photolithography, electroplating, electroless plating, cutting, inspection, customized metallization.
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## 5. 建议 PoC KPI
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| KPI 类别 | 建议指标 | 说明 |
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| Thermal | hotspot temperature drop vs. baseline | 以 AlN / Cu / graphite / VC reference coupon 作对照,目标可先写 “target: measurable reduction under Samsung-defined test condition”。 |
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| Interface | thermal resistance across bonding / metallization stack | 强调不是裸材料 TC,而是堆叠后的系统热阻。 |
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| Mechanical | thickness, flatness, warpage, dicing edge quality | 对移动端轻薄空间很关键。 |
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| Electrical / packaging | metallization adhesion, solderability, wire bonding compatibility | 对芯片直贴和模块集成重要。 |
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| Reliability | thermal cycling, humidity/heat aging, power cycling | 可作为后续 Samsung feedback 后确认的测试包。 |
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| Deliverable | sample coupons + one demo module + test report | 对应 6 个月 PoC,更容易评估。 |
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## 6. 仍需补充
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- Samsung 具体产品结构需通过公开 teardown / 专利 / 产业链资料继续核对,不能在 proposal 中假设其内部结构。
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- 如能拿到远志/陶老师过往热仿真结果,可放入一页“validated simulation workflow”,比临时虚构仿真更可信。
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- 需要统一公司英文名、联系人、专利数量、员工人数、估值等外部口径。
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- 若提交前允许与 Samsung Open Innovation 团队沟通,应把两个 PoC 方向拆成可选项,让对方选择最感兴趣的目标产品:AP hotspot / XR optical engine / wearable sensor / charging PMIC。
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