LED是發光二極體（Light-Emitting Diode）的簡稱，發光二極體可以說是人類開使用火，以及1879年愛迪生發明電燈後，照明市場的另一次革命性光源。
在發光二極體產業中，日本、美國及歐洲的廠商較早進入此產業，因此掌握住許多關鍵專利與技術，為發光二極體產業的領導者，而台灣及韓國的廠商則較晚進入此產業，專利佈局與技術水準較為落後，為此產業的後進者。但近幾年來，領導者開始願意與後進者進行專利的交叉授權，甚至與後進者合資成立新公司，顯示後進廠商似乎有追趕上領導者的現象。故我想要研究後進者成功追趕上領導者的關鍵因素為何？影響後進者追趕領導者速度快慢的因素為何？以及影響後進者與領導者提升技術能力的因素為何？
本研究主要使用Lee, Keun（2010）的研究架構，亦即藉由建立迴歸模型來分析科技體制（Technological regimes）與技術追趕（Technological catch-up）之間的關係，並且使用美國專利局（United States Patent and Trademark Office）的專利資料以及專利引證資料來計算科技體制（Technological regimes）與技術追趕（Technological catch-up）。
經過迴歸分析，本研究發現專利對後進者提升技術能力有較大的關聯性，但對技術追趕的關聯性較小。因為不只是專利會影響技術追趕，仍然有許多其他因素會影響技術追趕。但是專利卻對提升技術能力有最直接的影響。

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