status and prospects of oled lighting technology:...

www.osram-oled.com

Status and Prospects of OLED Lighting

Technology: Towards Flexible OLED for

Automotive Applications

Plastic Electronics 2015

Dr. Arne Fleissner | 08. Oct. 2015 | Dresden, Germany

Light is OSRAM

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

Dr. Arne Fleissner | Plastic Electronics 2015 | 08. Oct. 2015

2

Do we really need OLED?

Unique form factors offer design options and quality of light

unmatched by any other light source.

Low power consumption

Individual Styling

High quality light Segmented

Mirror

Large area

Homogeneous

Ultraflat Leightweight

Flexible

Transparent



3

Different focus for different OLED

application cases

What is going to be the first volume application?

Special Applications General Illumination

• Cost

• Efficiency

• Lifetime

Automotive

• Design / Features

• Reliability

• Robustness

• Cost

• Focus depends

on application

?



4


application cases


General Illumination Automotive Special Applications ? ?

• Cost

• Efficiency

• Lifetime


• Reliability

• Robustness

• Cost

• Focus depends

on application



5


application cases


General Illumination Automotive Special Applications !

• Cost

• Efficiency

• Lifetime


• Reliability

• Robustness

• Cost

• Focus depends

on application



6

Automotive Requirements

High temperature

operation

Lifetime at elevated

temperatures

(av. 50 °C)

Storage under

sunlight

( UV exposure)

Sunlight exposure

250 300 350 400 450 500 550 600 650 700 750 800 850 900 950

Wavelength (nm)

Ra

dia

nce

(a

rb. u

nits)

extraterrestrial = AM0

direct normal = AM1.0

global normal

global tilted 60° zenith

global tilted 10° zenith

UV

A

UV

B

Harsh environ-

mental conditions

Storage at elevated

humidity & temp.,

corrosive gases,etc.

H2S SO2 NO2

High temperature

storage

Storage at elevated

temperatures

(≥ 85 °C)

OSRAM is committed to automotive quality requirements,

tackling all key issues for Start of Production (SOP) 2016



7

OSRAM OLED Automotive

Rear Light Prototype...

Back-up light: LED

Brake light: LED Tail light: OLED

Turn indicator: LED + OLED

...featuring proven conformity: ECE conform Rear Combination Lamp (RCL)

Fully functional ECE

conform OLED RCLs

have been shown…

…but first RCLs

will be hybrids:

LED + OLED



8



...featuring transparency

• Clear view without haze

• 3D and depth effects

using transparency

• Adjustable emission ratio

between front/back



9



...featuring segmentation

• Independently addressable

segments with minimized gaps

• Individual dynamic scenarios

• 3D effects out of 2D by different

brightness levels (shadowing)



10



...featuring flexible OLED?



11

Metal substrate

Isolation /

Planarization layer

Flexible OLED device structure

Organic layers

Scratch protection /

outcoupling layer

Mirror anode

• Hermetic metal substrate for robustness and thermal management • Hermetic metal substrate for robustness and thermal management

• Ductile thin metal film electrode (no brittle ITO)

Transparent cathode

(thin metal film (TMF))

DC

Thin film

encapsulation (TFE)

• Hermetic metal substrate for robustness and thermal management

• Ductile thin metal film electrode (no brittle ITO)

• Thin film encapsulation is key technology

Light emission d < 300µm



12

R2D2 Research Project

Investigation of production-related processes and technologies for the

manufacturing of flexible OLED (2013 – 2015)

Flexible automotive

technology demonstrator

http://www.diehl.com/de/diehl-gruppe.html



13

R2D2 Research Project: Process flow for

flexible automotive technology demonstrator

1.) 3D Design

4.) Rear Light Evaluation

2.) OLED Development, Fabrication & Testing

Cu

rre

nt

de

nsi

ty

Voltage

+ _

3.) Modulisation & Rear Light Fabrication



14

R2D2 Research Project:

Development of 2D OLED for 3D module

• 3D shape requires complex OLED design in 2D

2D OLED as defined by 3D design

Lighting Segments

Device

edge



15




• Luminance homogeneity = optimized to >90% @ 2000cd/m²

minmax

minmax1LL

LL

2D OLED layout & simulation of

luminance distribution

Contact

region

Mirror

Anode

Tracing Luminance distribution



16




• Luminance homogeneity = optimized to >90% @ 2000cd/m²

minmax

minmax1LL

LL

2D OLED device

Contact

region

Mirror

Anode

Tracing



17


3D module

Hole in substrate

Incisions in

lighting area

Convex

bending

Concave bending

Highlighting the design freedom provided by flexible OLED in the future



18


Rear light technology demonstrator

1st public presentation last week

@ 11th International Symposium on

Automotive Lighting (ISAL 2015)



19

Summary

OLED offers design options and quality of

light unmatched by any other light source

OSRAM is committed to automotive quality

Automotive is going to be the first volume

application and is strongly design driven

R2D2 technology demonstrator highlights the

future design freedom provided by flexible OLED

Flexibility is key feature for future applications

after initial series production of rigid OLED

www.osram-oled.com

Light is OSRAM.

Visit us:

www.osram-oled.com

Contact:

Dr. Arne Fleißner

[email protected]

status and prospects of oled lighting technology:...

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