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AXT與Lumentum簽87億美元供應協議!銦磷半導體材料新戰場

一句話結論: 87億美元的長約告訴我們:AI的算力瓶頸正在從晶片製造轉向材料供應——誰掌握了基板,誰就掌握了下一代通訊。

銦磷材料的戰略價值

AXT, Inc.(AXTI)宣布與Lumentum簽署長期供應協議,總值約87億美元,鎖定銦磷(InP)基板供應至2030年後。這不僅是一筆大訂單——它標誌著半導體產業的核心瓶頸正在發生轉移。

為什麼InP(磷化銦)如此重要?

| 特性 | 銦磷 (InP) | 矽 (Si) | 氮化鎵 (GaN) |

|------|-----------|---------|-------------|

| 電子遷移率 | 極高 | 中等 | 高 |

| 光電轉換效率 | 最優 | 差 | 佳 |

| 高頻性能 | 卓越 | 一般 | 佳 |

| 製程成熟度 | 中等 | 成熟 | 中高 |

InP在三個關鍵領域不可取代:

1. 800G/1.6T光模塊 — 資料中心互連需要InP基的電光調制器

2. AI算力互連 — GPU集群的光纖通信依賴InP雷射器

3. 量子運算 — InP量子點是光子量子電腦的核心元件

InP材料結構 上圖:InP基板晶圓,用於高速光通訊元件製造。

87億美元長約的產業意義

這筆長約是半導體材料領域近十年來金額最大的供應協議之一。它傳遞了三個信號:

① Lumentum對未來需求極度樂觀

Lumentum是光通訊元件龍頭,其產品直接供應給Google、Microsoft、Meta等超大規模資料中心運營商。87億美元的承諾意味著它看到了一個確定性極高的需求曲線

② 材料短缺預防性囤貨

InP基板的供應集中度極高——全球僅3-4家能量產高品質InP基板。AXT是其中最大的一家。這筆長約本質上是在鎖定產能,防止未來被競爭對手擠出供應鏈。

③ AI基礎設施的下一階段

如果GPU是AI的大腦,光互連就是神經系統。隨著AI集群從萬卡擴展到十萬卡規模,晶片間通信頻寬需求呈指數增長——而這恰恰是InP的技術主場。

光通訊市場規模 上圖:全球光通訊元件市場規模預測,AI驅動的高速光模塊是最大增長動能。

台灣半導體材料供應鏈機會

台灣在全球半導體材料供應鏈中扮演關鍵角色:

| 公司 | 相關業務 | 受惠程度 |

|------|---------|---------|

| 環球晶圓 | Si+InP基板代工 | 間接受惠(產能滿載) |

| 全新光電 | VCSEL/InP光電元件 | 直接受惠(InP需求外溢) |

| 聯亞光電 | InP雷射磊晶片 | 直接受惠(技術領先) |

| 穩懋半導體 | GaAs/InP代工 | 間接受惠(產能利用率提升) |

值得注意的是,InP供應鏈的地緣政治風險正在上升——中國正大力投資InP國產化,而美國和日本的材料廠商也在加速擴產。

InP供應鏈地圖 上圖:全球InP基板供應鏈分布,供應高度集中於美國和日本。

常見問題 (FAQ)

Q1: 銦磷(InP)與氮化鎵(GaN)、碳化矽(SiC)有何不同?

三者都是寬能隙半導體材料,但應用場景不同:GaN主打快充和5G射頻,SiC聚焦電動車和功率元件,InP則專攻光通訊和高速類比——InP的電子遷移率和光電轉換效率是三者中最高的。

Q2: Lumentum是什麼公司?

Lumentum是全球最大的光通訊元件供應商之一,產品包括光雷射器、光調制器、光放大器等。其客戶包括Google、Microsoft、Meta、AWS等所有主要雲端服務商,是AI資料中心光互連的核心供應商。

Q3: 台灣有哪些銦磷供應鏈公司?

台灣在全球InP供應鏈中扮演光電元件製造的角色:全新光電(2455)和聯亞光電(3081)是直接InP光電元件供應商;穩懋半導體(3105)提供GaAs/InP代工服務。

Q4: 87億美元是什麼概念?

作為對比,AXT目前的年營收約3-4億美元——這筆長約相當於其20多年營收。Lumentum的年營收約18億美元,87億美元約佔其未來5年預估營收的相當大比例。

Q5: AI資料中心的光互連為什麼重要?

隨著AI模型參數量從數千億擴展到數兆,單一GPU無法容納,需要大量GPU並行運算。GPU之間通過光纖通信交換數據——這就是光互連。InP基的光模塊是實現超高速(1.6Tbps以上)互連的關鍵技術。


資料來源:AXT官方公告、Lumentum投資者簡報、Yole Intelligence光通訊報告 圖片來源:Twitter(InP基板、InP供應鏈)、Wikimedia Commons(光通訊市場)

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