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研究生:張玉信
研究生(外文):CHANG, YU-SIN
論文名稱:脈衝寬度調變驅動有機發光二極體之 暫態分析
論文名稱(外文):The Transient Analysis of the Organic Light-Emitting Diode Driven by Pulse-Width Modulation Signals
指導教授:楊恆隆
指導教授(外文):YANG, HENG-LONG
口試委員:鄭榮安賴政遠楊恆隆
口試委員(外文):CHENG, JUNG-ANLAI, CHENG-YUANYANG, HENG-LONG
口試日期:2019-07-31
學位類別:碩士
校院名稱:國立臺北科技大學
系所名稱:光電工程系
學門:工程學門
學類:電資工程學類
論文種類:學術論文
論文出版年:2019
畢業學年度:107
語文別:中文
論文頁數:54
中文關鍵詞:有機發光二極體脈衝寬度調變2T1C畫素驅動電路電流突波
外文關鍵詞:Organic Light-Emitting Diode (OLED)Current SurgeCapacitive EffectPulse-Width Modulation (PWM)
相關次數:
  • 被引用被引用:1
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  • 下載下載:1
  • 收藏至我的研究室書目清單書目收藏:0
本篇論文主要是以模擬的方式來進行理論預測,將脈衝寬度調變(PWM)訊號用於驅動有機發光二極體(OLED),透過脈衝寬度變化來抑制OLED負載端的電流突波現象。我們藉由與OLED等效的模型進行模擬,隨後透過設計不同脈衝寬度來模擬輸入訊號,計算各組數據之電流峰對峰值,並計算電流峰對峰值的變化百分比。模擬結果表示,將波型切割的越窄,電流峰對峰值越低,而考量波型切割造成頻率過高,找到之最佳的脈衝寬度可以降低13.47%的電流峰對峰值。而如果以相同功率作為基準,可以降低63.68%的電流峰對峰值。固定電流有效值時,可以降低86.25%的電流峰對峰值。模擬證明了PWM訊號對OLED的電流突波具有抑制的效果。
This thesis research applies Pulse-Width Modulation (PWM) technique to investigate the feasibility of reducing current-surge phenomena as an organic light-emitting diode (OLED) is driven by pulse-wise signal. The occurrence of current-surge is mainly caused by the capacitive effect of an OLED in which the organic layers are sandwiched by anode and cathode electrodes. We used PSPICE simulation tool to reproduce the current-surge phenomena by using the equivalent-circuit model of an OLED and calculate the differences of peak-to-peak values before and after applying various PWM signals. Our simulation suggests that peak values of the surge can be reduced as narrowing the pulse-width. Our simulation result reveals that the peak values of the surge can be reduced up to 63.68% and 86.25% by applying proper PWM waveforms under constant power and average-current modes respectively.
中文摘要.........................................i
英文摘要.........................................ii
誌謝.............................................iii
目錄.............................................iv
表目錄...........................................v
圖目錄...........................................vi
第一章 緒論.....................................1
1.1研究背景......................................1
1.2研究動機......................................4
1.3論文架構......................................12
第二章 脈衝寬度調變驅動有機發光二極體之理論背景.....13
2.1脈衝寬度調變訊號與電路..........................13
2.2 OLED等效負載模型..............................16
第三章 脈衝寬度調變驅動有機發光二極體之模擬.........20
3.1 PWM之設計.....................................20
3.1.1 改變脈衝寬度之設計........................20
3.1.2 固定功率並降低電壓之脈衝設計...............23
3.1.3 固定電流有效值並降低電壓之脈衝設計..........24
3.2模擬流程........................................25
第四章 結果與討論..................................28
4.1脈衝寬度調變驅動有機發光二極體之對照組.........28
4.2脈衝寬度調變驅動有機發光二極體對峰對峰值影響........31
4.2.1改變脈衝寬度對電流峰對峰值影響...................31
4.2.2固定功率並降低電壓對電流峰對峰值影響..............35
4.2.3固定電流有效值並降低電壓對電流峰對峰值影響........38
4.3脈衝寬度調變驅動有機發光二極體之最佳化..............41
4.3.1改變脈衝寬度之最佳點............................41
4.3.2固定功率並降低電壓之最佳點.......................43
4.3.3固定電流有效值並降低電壓之最佳點.................45
第五章 結論與未來展望...............................47
5.1結論.............................................47
5.2未來展望.........................................48
參考文獻 ...........................................49
附錄 : A.均方根值...................................52

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