6AG1134-6HD01-2BA1 全球半導體產業蓬勃發展,先進封裝在其中凸顯了什么價值?特色工藝起到了何種作用?在全球半導體供應緊張的背景下,業界該如何攻克缺“芯”難題?在SEMICON China2021上,我們似乎嗅到了未來半導體技術發展的兩個重要趨勢。
封裝重要性愈發凸顯
當前,芯片制造工藝已經達到了5nm節點,逐漸逼近物理極限。中國、浙江大學微納電子學院院長吳漢明在SEMICON China2021演講中談道,在后摩爾定律時代,業界已經不再單純地只以線寬、線距和集成度的尺寸來“論英雄”,而是更多地考慮如何提升系統的性能以及如何在整個微系統上提升集成度。基于此,半導體產業鏈中封裝環節的價值與重要性愈發凸顯。
智能手機、汽車電子、5G、AI等新興市場對封裝環節提出了更高要求,使得封裝技術朝著系統集成、三維、超細節距互連等方向發展,因此先進封裝就成為封裝領域的重要發展趨勢。其中,SIP系統級封裝是當下的一種主流封裝技術。據悉,該技術可將多顆不同功能的芯片整合到一個模塊當中,以實現一顆芯片兼具多種功能。SIP系統級封裝既可以克服芯片系統集成過程中面臨的工藝兼容、信號混合、噪聲干擾和電磁干擾等問題,還可以降低芯片系統集成的成本,是未來先進封裝領域最重要的技術趨勢之一。
先進封裝的另一個發展路徑是晶圓級封裝。長電科技執行長鄭力在接受記者采訪時表示,晶圓級封裝若要繼續向多維方向發展,比如2D、2.5D、3D方向,就必然會與晶圓廠進行合作。鄭力表示,這是因為晶圓廠具備在晶圓上進行TSV(硅通孔)工藝制造的能力。在硅轉接板時,晶圓廠也能做Silicon Interposer(硅中介層),即高密度布線的晶圓。而封測廠則要進行RDL(晶圓重布)的過程,之后再把布線在封測的層次上進行高密度重新整合。
鄭力向記者指出,晶圓廠在晶圓上的工藝更加先進,這一點對封裝測試領域向晶圓級封裝方向發展有非常大的幫助,因為晶圓廠擁有這方面的設備,也擅長這方面的工藝。“晶圓廠與封裝廠的配合,會加速晶圓級封裝向更加廣泛的應用和更具深度的技術創新方向發展。我們非常愿意看到雙方有這樣的互動。”鄭力說道。
微型化和集成化也是先進封裝發展的兩大趨勢。佰維存儲智能終端存儲芯片事業部負責人劉陽認為,在存儲器封裝領域,超薄die(晶粒)與異構集成工藝是產業發展的主要動能。當前,先進封裝正在賦能萬物互聯,有望在射頻芯片、人工智能、物聯網、移動智能終端等多個領域大放異彩。
6AG1134-6HD01-2BA1
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