最佳化陣列式UVLED固化系統之研究

隨著高功率發光二極體（LEDs）的發光效率與可靠度的提升及製造成本的降低，現今LEDs已被普及使用在生活上照明上；未來將更被用於工業製程加工當中的關鍵應用，LEDs也從原本的單元零件材料製程技術發展，逐漸演變為LEDs構裝技術與發光穩定電路以及發光高可靠度之研發，這使得發光元件的電路穩定控制將會成為發展重點。本論文研究共分三個部分主要目的是在探討高功率紫外光發光二極體（High Power Ultraviolet Light-Emitting Diode）在自動定電流控制電路（Auto Constant Current Control system）及自動定電功率控制電路（Auto Constant Electric power Control system）的穩定發光狀態研究。第一部分研究為設計一可程式自動感測LEDs發光功率與即時偵測LEDs電壓及光強度與空間溫度之模組，來取代市場上單一功能量測光強度之量測器，實驗結果得出此設計模組可以藉由長時間穩定的監控得出LEDs光功率與電功率之變化量。的二部分研究為高功率發光二極體在自動定電流控制電路（Auto Constant Current Control system）及自動定電功率控制電路（Auto Constant Electric power Control system）的發光穩態與非穩態之差異，並由可程式自動偵測連續讀取光強度與照射區域溫度使得應用此電路控制系統者可藉由本論文研究模型得出最佳操作區域，也可依照此模型定義出LEDs照射製程參數。第三部分研究為在半導體封裝使用高功率發光二極體照射加工並應用自動定電流控制電路（Auto Constant Current Control system）及自動定電功率控制電路（Auto Constant Electric power Control system）時的被照射穩態與非穩態之間之差異，並與比較各工作區域溫度做了比較，並加入車用電子產品所規定之信賴性實驗測定，第一部份與第二部份的實驗結論可以得到佐證。在本論文研究結果中進一步證實了自動定電功率控制電路（Auto Constant Electric power Control system）的發光穩態區間優於自動定電流控制電路（Auto Constant Current Control system），是更適合於需要高穩定品質的車用電子產品。

關鍵字

高功率紫外光發光二極體；自動定電流；自動定電功率； TIA

並列摘要

With the increase in luminous efficiency and reliability, and with the decrease in manufacturing costs, LEDs have been popularly used in daily life lighting, and would be used in the key application of industrial processes. Additionally, the focus of LEDs has also been gradually evolved from the process technology development of unit part materials to research and development of packaging technology, steady lighting circuits and high lighting reliability, which would allow circuit stability control of lighting devices to become the development focus. This study was divided into three parts, aimed mainly to investigate the steady light state of high power ultraviolet light-emitting diodes for the auto constance current control system and auto constance electric power control system. The first part of this study was to devise a programmable module capable of automatically sensing lighting power and detecting voltage, light intensity and space temperature of LEDs in a real-time manner to replace measuring devices with a single function of measuring light intensity. Experimental results indicated that this module could be used to obtain variations of optical power and electric power of LEDs through steady long-term monitoring. The second part explored the difference between the steady and unsteady light states of the auto constant current control system and auto constant electric power control system. This study enabled us to continuously read light intensity and irradiation area temperature through a programmable automatic detector, and enabled those who applied the circuit control system to derive the best operating region and to define the irradiation process parameters of LEDs based on the model in this study. The third part delved into the semiconductor packaging processed by using irradiation from high power light emitting diodes, employing the difference between the irradiation-caused steady and unsteady states of the auto constant current control system and auto constant electric power control system, where the temperature of each working area was compared, and experimental reliability tests specified in automotive electronics were included. The first and third parts of the experimental conclusions could be corroborated. This study further verified that the steady lighting interval of the auto constant electric power control system is superior to that of the auto constant current control system and more suitable for use in the automotive electronics, which require high stability quality.