- 學位論文
應用濾波電路於主動式有機發光二極體驅動實驗
The Experimental Investigation of Applying Filter Circuitry for AMOLED Driving Scheme
摘要
本論文研究目的是以實驗驗證類比及數位濾波電路應用於主動式有機發光面板(AMOLED)畫素驅動電路，對於白光有機發光二極體(WOLED)負載上的電流突波抑制以及系統功率損耗降低的程度。類比濾波器是由電容及電感組成，數位濾波器則由數位電路結合數位信號處理所組成。我們分別記錄了有濾波電路與沒有濾波電路於畫素驅動電路中WOLED負載的電壓、電流與功率訊號，並計算出各訊號的有效值(RMS)以及WOLED負載電流的突波變化率來與功率有效值變化率。從WOLED負載電流與功率訊號的結果來看，加上類比濾波電路後，相對於未加濾波電路的電流突波變化率以及功率突波變化率為-44.44%與-74.55%；加上數位濾波器後，相對於未加數位濾波電路的電流突波變化率以及功率突波變化率為-29.41%與-84.75%。實驗結果顯示於畫素驅動電路中加上類比濾波電路與數位濾波電路，能夠達到抑制WOLED負載電流突波訊號以及降低系統功率損耗的效果。
並列摘要
The purpose of this thesis research is to experimentally investigate if the transient current surge occurred in operating active-matrix organic light-emitting displays (AMOLED) can be suppressed by applying either analog or digital filter circuitries. The transient current surge may cause higher power loss and other issues in operating AMOLED. The experiments of suppressing current surge were conducted by comparing current and voltage waveforms with applying filter circuitries to those without filters as control. The root-mean-square (RMS) power in operating AMOLED with and without applying filter circuitries were also compared each other for quantitative analysis. Our experimental results reveal that the current-surge peak and RMS power are reduced in 44.4% and 74.6% average respectively after applying analog filter circuitry. The current-surge peak and RMS power are reduced in 29.4% and 84.8% average respectively after applying digital filter circuitry.