organic light emitting diodes electronic drivers stephen clemmet ceng msc beng miet
DESCRIPTION
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. - PowerPoint PPT PresentationTRANSCRIPT
![Page 1: Organic Light Emitting Diodes Electronic Drivers Stephen Clemmet CEng MSc BEng MIET](https://reader035.vdocuments.net/reader035/viewer/2022062222/56814f52550346895dbcf8e1/html5/thumbnails/1.jpg)
Organic Light Emitting DiodesElectronic Drivers
Stephen Clemmet CEng MSc BEng MIET
Oxford - Great Britain
![Page 2: Organic Light Emitting Diodes Electronic Drivers Stephen Clemmet CEng MSc BEng MIET](https://reader035.vdocuments.net/reader035/viewer/2022062222/56814f52550346895dbcf8e1/html5/thumbnails/2.jpg)
Topics
Drive Electronics
1. Overview of OLED technology2. Constant current3. Pulse width modulation4. Commercial OLED drivers
![Page 3: Organic Light Emitting Diodes Electronic Drivers Stephen Clemmet CEng MSc BEng MIET](https://reader035.vdocuments.net/reader035/viewer/2022062222/56814f52550346895dbcf8e1/html5/thumbnails/3.jpg)
Organic Light Emitting Diodes
![Page 4: Organic Light Emitting Diodes Electronic Drivers Stephen Clemmet CEng MSc BEng MIET](https://reader035.vdocuments.net/reader035/viewer/2022062222/56814f52550346895dbcf8e1/html5/thumbnails/4.jpg)
OLED System
OLED Driver
Channels
PWM
Current
Battery
Device
EncapsulationUV
Cathode
ETL
EmissiveUV
HTL
MaskUV
Anode
Substrate
![Page 5: Organic Light Emitting Diodes Electronic Drivers Stephen Clemmet CEng MSc BEng MIET](https://reader035.vdocuments.net/reader035/viewer/2022062222/56814f52550346895dbcf8e1/html5/thumbnails/5.jpg)
OLED Structure
Encapsulation
Power
Mask Mask
Hole Transport
Emissive
Electron Transport
Cathode
Substrate
Anode
Light
![Page 6: Organic Light Emitting Diodes Electronic Drivers Stephen Clemmet CEng MSc BEng MIET](https://reader035.vdocuments.net/reader035/viewer/2022062222/56814f52550346895dbcf8e1/html5/thumbnails/6.jpg)
Drive Electronics
Pulse Width Modulator
Constant Current
OLED
![Page 7: Organic Light Emitting Diodes Electronic Drivers Stephen Clemmet CEng MSc BEng MIET](https://reader035.vdocuments.net/reader035/viewer/2022062222/56814f52550346895dbcf8e1/html5/thumbnails/7.jpg)
Ohms Law
V = I x RVoltage = Current x Resistance
![Page 8: Organic Light Emitting Diodes Electronic Drivers Stephen Clemmet CEng MSc BEng MIET](https://reader035.vdocuments.net/reader035/viewer/2022062222/56814f52550346895dbcf8e1/html5/thumbnails/8.jpg)
Constant Current
RDRIVER
ROLED
VDRIVER = IDRIVER x RDRIVER
VOLED = IDRIVER x ROLEDIDRIVER
VBATTERY = VDRIVER x VOLED
V = I x R
![Page 9: Organic Light Emitting Diodes Electronic Drivers Stephen Clemmet CEng MSc BEng MIET](https://reader035.vdocuments.net/reader035/viewer/2022062222/56814f52550346895dbcf8e1/html5/thumbnails/9.jpg)
Pulse Width Modulation
Mark : Space
20 : 80 ≡ 20%
50 : 50 ≡ 50%
80 : 20 ≡ 80%
![Page 10: Organic Light Emitting Diodes Electronic Drivers Stephen Clemmet CEng MSc BEng MIET](https://reader035.vdocuments.net/reader035/viewer/2022062222/56814f52550346895dbcf8e1/html5/thumbnails/10.jpg)
OLED Driver Integrated Circuits
![Page 11: Organic Light Emitting Diodes Electronic Drivers Stephen Clemmet CEng MSc BEng MIET](https://reader035.vdocuments.net/reader035/viewer/2022062222/56814f52550346895dbcf8e1/html5/thumbnails/11.jpg)
Organic Light Emitting DiodesElectronic Drivers
Stephen Clemmet CEng MSc BEng MIET
Oxford - Great Britain