在傳統的白光LED封裝製程中，白光LED色度是由操作人員目視判斷LED點膠後膠體表面反射光暈的大小所決定。然而，不同操作人員會因各自的目視判斷而產生誤差。這誤差會導致生產過程中之白光LED色度不容易穩定的控制在客戶規格內或特定區間，且降低生產過程中之白光LED色度良率。
因此，在本論文中，我們將使用手動精確法與自動化精確法的量測LED點膠厚度方式來改善白光LED之色度良率，並且與傳統之人員目視判斷LED點膠膠量法相互比較。在白光LED色度良率比較上我們可以發現手動精確法會比傳統法更高，但是手動精確法之測量LED點膠厚度的速度相較於傳統法慢。而自動化精確法又比手動精確法的色度良率更高、測量速度更快、人力成本更低。且自動化精確法更容易穩定控制在特定區間中。這研究證實了自動化精確法的量測方式可以有效地改善白光LED色度良率以及增加量測速度與降低人力成本與增加整體營收。這研究也證實了可以讓所生產的白光LED色度往客戶色度規格中心收斂，以因應客戶特定規格的要求。

In the process of traditional white LED packaging, the white LED chrominance is determined by operator seeing the size of reflection halo of LED surface. However, the different operator will have the error of the visual judgment for the white LED chrominance. The error will cause the LED chrominance of the production process is not easy to control in customer specifications steadily, and reduce the white LED chrominance yield of the production process.
In this thesis, we will use the manual measurement and automation measurement to improve the white LED chrominance yield, and compare with traditional method. We can find the white LED chrominance yield of the manual measurement better than traditional method. But, the speed of the manual measurement is slower than traditional method. The automation measurement is better than manual measurement for higher LED chrominance yield and higher measurement speed and lower labor costs. The automation measurement also is easier to control the LED chrominance in customer specifications steadily. This study confirmed the automation measurement can effectively improve the white LED chrominance yield and increase measurement speed and reduce labor costs and increase overall revenue. This study also confirmed that the LED chrominance of the production process can be convergence of customer specification center and achieve the requirements of customer specifications.

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