DRIVE | light.touch.matters the object is the interface (part 2)
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The document discusses the advancements and challenges in the manufacturing of organic light-emitting diodes (OLEDs), emphasizing the preference for roll-to-roll processes and flexible substrates to reduce costs and material loss. It highlights the use of piezoelectric materials for touch integration in OLED technology, detailing various compositions and their properties. Overall, the integration of flexible electronics and innovative materials is crucial for the future of OLED development.
![Flexible ‘Touch’
Composite Piezoelectric materials
1
10
100
1000
1,00 10,00 100,00 1000,00
PiezoelectricVoltageSensitivity(g31)
[mV.m/N]
Young's Modulus [GPa]
Polymers
Ceramics
Single crystals
0-3 Composites
PVDF based
0-3 Composites
Polymers
Ceramics
Glass ceramics
PZT
PT
BT
Quartz
LiTaO3
Single Crystals
OLED
Flexibility
Sensitivity](https://image.slidesharecdn.com/drivelight-151028084756-lva1-app6892/85/DRIVE-light-touch-matters-the-object-is-the-interface-part-2-19-320.jpg)
DRIVE | light.touch.matters the object is the interface (part 2)
- 1. Pim Groen
- 3. 1. Light 2. Touch 3. Integration Pim Groen Holst Centre TU Delft
- 4. Light Heated wire: point source
- 5. Light In theory 100% = 683 lm/W
- 6. OLED Lighting: Anatomy of an OLED device
- 9. 25 cm x 17 cm 10,000 €/m2 Rigid glass Vacuum/litho processes 40-60 % material loss Rare materials 100 €/m2 Flexible substrates Direct printing processes <5% material loss Mainstream materials 2020Now ‘Light’ Organic light emitting diodes (OLED)
- 10. One of the key challenges: How to manufacture these products? Large quantities and large sizes… • roll-to-roll (R2R) manufacturing preferred – easier to make large quantities at low costs • to be build on low cost flex foils – not on polyimide-foil: ~ 50 euro/m2 – but on PET-foil: ~ 3 euro/m2 Printing preferred over lithographic patterning • easier for roll-to-roll processing • fine features without complicated masks Large area flexible electronics, manufacturing
- 12. OLEDs coated on new R2R production line Bottom-emissive OLED on plastic barrier foil Top-emissive OLED on metal foil
- 13. NEW: Transparent Flexible OLED
- 14. Color change (Semi)transparent OLEDs • Currently available in green, blue and red • Allows for independent colour tuning in combination with a red or yellow emitting OLED
- 15. Color change
- 16. Touch
- 17. Touch Keep it simple Piezoelectric materials
- 18. Ceramics: Pb(Zr,Ti)O3 (PZT bulk or fibres) - Polymers: PVDF (+ Copolymers) Stiff & Brittle; High T Complex processing High power density Composites: Flexible Simple processing Good sensor properties Very Flexible Low T Complex processing High Losses Why composites?
- 19. Flexible ‘Touch’ Composite Piezoelectric materials 1 10 100 1000 1,00 10,00 100,00 1000,00 PiezoelectricVoltageSensitivity(g31) [mV.m/N] Young's Modulus [GPa] Polymers Ceramics Single crystals 0-3 Composites PVDF based 0-3 Composites Polymers Ceramics Glass ceramics PZT PT BT Quartz LiTaO3 Single Crystals OLED Flexibility Sensitivity
- 21. DEP Orientation of Lead free Piezo Composite Polymer Structure Filler
- 23. + = Integration:
- 24. 24 STORY /
- 25. LIFESAVER / 25
- 26. Dutch Design Week / Mind the step 26 klokgebouw
- 27. TACTILE TOP LAYER SILICONE SHEET 0,3mm PRINT LAYER TRANSFER PRINT (GRAPHICS) POLYESTER FABRIC (SEMI TRANSP.) PVC MASKING COLOR FILTERS OVERHEAD SHEET TACTILE BOTTOM LAYER EPDM RUBBER 2mm ITO SUBSTRATE TRANSPARENT LAYER CONDUCTING ELECTRICITY EL PRINT EMITTING LIGHT ISO PRINT INSULATING SILVER FROM ITO SILVER PRINT CONDUCTING ELECTRICITY PIEZO PRINT GOLD CONTACTS GLUED TO .. LAYERS /
- 28. Integration: