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Organic Light Emitting Diodes Electronic Drivers Stephen Clemmet CEng MSc BEng MIET

Organic Light Emitting Diodes Electronic Drivers Stephen Clemmet CEng MSc BEng MIET Oxford - Great Britain. Topics. Drive Electronics Overview of OLED technology Constant current Pulse width modulation Commercial OLED drivers. Organic Light Emitting Diodes. OLED System.

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Organic Light Emitting Diodes Electronic Drivers Stephen Clemmet CEng MSc BEng MIET

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  1. Organic Light Emitting Diodes Electronic Drivers Stephen Clemmet CEng MSc BEng MIET Oxford -Great Britain

  2. Topics • Drive Electronics • Overview of OLED technology • Constant current • Pulse width modulation • Commercial OLED drivers

  3. Organic Light Emitting Diodes

  4. OLED System

  5. OLED Structure Encapsulation Cathode Electron Transport Emissive Hole Transport Mask Mask Anode Power Substrate Light

  6. Drive Electronics Constant Current OLED Pulse Width Modulator

  7. Ohms Law V = I x R Voltage = Current x Resistance

  8. Constant Current V = I x R VDRIVER = IDRIVER x RDRIVER RDRIVER VOLED = IDRIVER x ROLED IDRIVER ROLED VBATTERY = VDRIVER x VOLED

  9. Pulse Width Modulation Mark : Space 20 : 80 ≡ 20% 50 : 50 ≡ 50% 80 : 20 ≡ 80%

  10. OLED Driver Integrated Circuits

  11. Organic Light Emitting Diodes Electronic Drivers Stephen Clemmet CEng MSc BEng MIET Oxford -Great Britain

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