Status and Prospects of OLED Lighting Technology: Towards Flexible OLED for Automotive Applications

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1 Status and Prospects of OLED Lighting Technology: Towards Flexible OLED for Automotive Applications Plastic Electronics 2015 Dr. Arne Fleissner 08. Oct Dresden, Germany Light is OSRAM

2 Do we really need OLED? Unique form factors offer design options and quality of light unmatched by any other light source. Mirror Transparent Homogeneous Large area Individual Styling Segmented Flexible Ultraflat Leightweight High quality light Low power consumption 2

3 Different focus for different OLED application cases What is going to be the first volume application? Special Applications? General Illumination Automotive Focus depends on application Cost Efficiency Lifetime Design / Features Reliability Robustness Cost 3

4 Different focus for different OLED application cases What is going to be the first volume application? Special Applications? General Illumination? Automotive Focus depends on application Cost Efficiency Lifetime Design / Features Reliability Robustness Cost 4

5 Different focus for different OLED application cases What is going to be the first volume application? Special Applications General Illumination Automotive! Focus depends on application Cost Efficiency Lifetime Design / Features Reliability Robustness Cost 5

6 Radiance (arb. units) UVB UVA Automotive Requirements OSRAM is committed to automotive quality requirements, tackling all key issues for Start of Production (SOP) 2016 High temperature operation High temperature storage Harsh environmental conditions Sunlight exposure Lifetime at elevated temperatures (av. 50 C) Storage at elevated temperatures ( 85 C) Storage at elevated humidity & temp., corrosive gases,etc. Storage under sunlight ( UV exposure) extraterrestrial = AM0 direct normal = AM1.0 global normal global tilted 60 zenith global tilted 10 zenith H 2 S SO 2 NO Wavelength (nm) 6

7 OSRAM OLED Automotive Rear Light Prototype......featuring proven conformity: ECE conform Rear Combination Lamp (RCL) Fully functional ECE conform OLED RCLs have been shown Turn indicator: LED + OLED Tail light: OLED Brake light: LED Back-up light: LED but first RCLs will be hybrids: LED + OLED 7

8 OSRAM OLED Automotive Rear Light Prototype......featuring transparency Clear view without haze 3D and depth effects using transparency Adjustable emission ratio between front/back 8

9 OSRAM OLED Automotive Rear Light Prototype......featuring segmentation Independently addressable segments with minimized gaps Individual dynamic scenarios 3D effects out of 2D by different brightness levels (shadowing) 9

10 OSRAM OLED Automotive Rear Light Prototype......featuring flexible OLED? 10

11 Flexible OLED device structure d < 300µm DC Light emission Scratch protection / outcoupling layer Thin film encapsulation (TFE) Transparent cathode (thin metal film (TMF)) Organic layers Mirror anode Isolation / Planarization layer Metal substrate Hermetic metal substrate for robustness and thermal management Ductile thin metal film electrode (no brittle ITO) Thin film encapsulation is key technology 11

12 R2D2 Research Project Investigation of production-related processes and technologies for the manufacturing of flexible OLED ( ) Flexible automotive technology demonstrator 12

13 Current density R2D2 Research Project: Process flow for flexible automotive technology demonstrator 1.) 3D Design 2.) OLED Development, Fabrication & Testing + _ Voltage 3.) Modulisation & Rear Light Fabrication 4.) Rear Light Evaluation 13

14 R2D2 Research Project: Development of 2D OLED for 3D module 2D OLED as defined by 3D design Lighting Segments Device edge 3D shape requires complex OLED design in 2D 14

15 R2D2 Research Project: Development of 2D OLED for 3D module 2D OLED layout & simulation of luminance distribution Contact region Mirror Anode Tracing Luminance distribution 3D shape requires complex OLED design in 2D Luminance homogeneity = 1 L L max max L L min min optimized to 2000cd/m² 15

16 R2D2 Research Project: Development of 2D OLED for 3D module 2D OLED device Contact region Mirror Anode Tracing 3D shape requires complex OLED design in 2D Luminance homogeneity = 1 L L max max L L min min optimized to 2000cd/m² 16

17 R2D2 Research Project: 3D module Highlighting the design freedom provided by flexible OLED in the future Concave bending Convex bending Incisions in lighting area Hole in substrate 17

18 R2D2 Research Project: Rear light technology demonstrator 1st public presentation last 11 th International Symposium on Automotive Lighting (ISAL 2015) 18

19 Summary OLED offers design options and quality of light unmatched by any other light source Automotive is going to be the first volume application and is strongly design driven OSRAM is committed to automotive quality Flexibility is key feature for future applications after initial series production of rigid OLED R2D2 technology demonstrator highlights the future design freedom provided by flexible OLED 19

20 Light is OSRAM. Visit us: Contact: Dr. Arne Fleißner