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OLED based binocular interactive seethrough HMD
SID2012 Exhibitors’ Forum

Dr. Rigo Herold
5.06.2012
Outline
• Introduction
• System Overview
• Applications

© Fraunhofer IPMS
Introduction
OLED-Microdisplay
Excellent contrast ratio
Large dynamic range
Low power consumption
State of the art: Uni-directional output
Additional image sensor
Beyond state of the art: Bi-directional
input+output
Diversity of new applications

Uni-directional display: VGA, 6x8mm²
(www.hypoled.org)

encapsulation
CMOS backplane wafer

OLED

© Fraunhofer IPMS

Dr. Rigo Herold I 5.6.2012 I slide 2

CMOS PD

CMOS circuit
Introduction
Bidirectional OLED-Microdisplay
Top-emitting OLED
Direct evaporation of OLED stack
through a shadow mask
Unpatterned OLED
Pixel shape defined by bottom
electrode (CMOS top metal anode)
Common cathode
Colour filter (optional)

© Fraunhofer IPMS

Dr. Rigo Herold I 5.6.2012 I slide 3
Introduction
Chip-architecture
Nested display and image
sensor pixel matrix
Separated controls
Configuration via IIC
Common bias block
External ADC
Mobile host system for data
processing and applications

© Fraunhofer IPMS

Dr. Rigo Herold I 5.6.2012 I slide 4
Introduction
Bidirectional OLED-Microdisplay feedback mode demonstrator
Acquired image directly fed back into display

See this demo
at booth #1371!

© Fraunhofer IPMS

Dr. Rigo Herold I 5.6.2012 I slide 5
System Overview
System architecture

© Fraunhofer IPMS

Dr. Rigo Herold I 5.6.2012 I slide 6
System Overview

© Fraunhofer IPMS

Dr. Rigo Herold I 5.6.2012 I slide 7
System Overview
Specifications:
Display: 640 x 480 pixels
Viewing-area (µD): 10,2 mm x 7,7 mm
Eyetracking camera: 128 x 96 pixels
FOV (see-through): 26,5° x 17,2°
FOV (info channel): 20° x 21,6°
Accomodation distance: 750 mm
See-through Transparency: 50 %
Eye-motion box: 5,6 mm x 11,2 mm
Weight: 198g

© Fraunhofer IPMS

Dr. Rigo Herold I 5.6.2012 I slide 8
Applications
Eyetracker

Eye-tracking

Preprocessing

Input Image
Adaptive Filtering
Histogram
Equalization

Detecting Corneal
Reflections

Input image

Detecting Pupil

Ellipse fitting

Gaze-track
© Fraunhofer IPMS

Dr. Rigo Herold I 5.6.2012 I slide 9

Detection of pupil (red) and
reflections (green)
Bidirectional display

-1
°

Radio

53 km/h

Displays an image and detects
another image on the same device

Navi

Menu

Applications

HMD application
Tracking eye-movement for users
sight and awareness
Gaze-based human-display-interaction
Interactive augmented-reality

© Fraunhofer IPMS

Dr. Rigo Herold I 5.6.2012 I slide 10

60
30

Display off
Applications
Worldmap
Fullsize earth map
ROI is displayed on HMD
Moving ROI by gaze

Try this demo
at booth #1371!

© Fraunhofer IPMS

Dr. Rigo Herold I 5.6.2012 I slide 11
Summary
Bidirectional OLED-Microdisplay
Demonstrator OLED based binocular interactive
see-through HMD is available
Work was in parts sponsored by Federal Ministry for Education and Research
of the German government
Contact
Dr. Rigo Herold (Fraunhofer IPMS)
Booth 1371@SID2012
phone: +49-351-8823-216
email: rigo.herold@ipms.fraunhofer.de

© Fraunhofer IPMS

Dr. Rigo Herold I 5.6.2012 I slide 12

Thank you for
attention
Optical System
HMD-Application
See-through optics (beam-splitter, VIS transmissive mirror)
Different imaging planes for display and camera
Near-infrared illumination of eye scene

© Fraunhofer IPMS

Dr. Rigo Herold I 5.6.2012 I slide 13
Introduction to organic LEDs - OLEDs

_

Light emission

(silicon wafer)
Light emission

bottom-emitting

top-emitting

Lighting

transparent conductor

Medium and large
display ⇒ TFT

organic layers
metal cathode
substrate

© Fraunhofer IPMS

Dr. Rigo Herold I 5.6.2012 I slide 14

OLED-on-CMOS

+

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See through hmd

  • 1. OLED based binocular interactive seethrough HMD SID2012 Exhibitors’ Forum Dr. Rigo Herold 5.06.2012 Outline • Introduction • System Overview • Applications © Fraunhofer IPMS
  • 2. Introduction OLED-Microdisplay Excellent contrast ratio Large dynamic range Low power consumption State of the art: Uni-directional output Additional image sensor Beyond state of the art: Bi-directional input+output Diversity of new applications Uni-directional display: VGA, 6x8mm² (www.hypoled.org) encapsulation CMOS backplane wafer OLED © Fraunhofer IPMS Dr. Rigo Herold I 5.6.2012 I slide 2 CMOS PD CMOS circuit
  • 3. Introduction Bidirectional OLED-Microdisplay Top-emitting OLED Direct evaporation of OLED stack through a shadow mask Unpatterned OLED Pixel shape defined by bottom electrode (CMOS top metal anode) Common cathode Colour filter (optional) © Fraunhofer IPMS Dr. Rigo Herold I 5.6.2012 I slide 3
  • 4. Introduction Chip-architecture Nested display and image sensor pixel matrix Separated controls Configuration via IIC Common bias block External ADC Mobile host system for data processing and applications © Fraunhofer IPMS Dr. Rigo Herold I 5.6.2012 I slide 4
  • 5. Introduction Bidirectional OLED-Microdisplay feedback mode demonstrator Acquired image directly fed back into display See this demo at booth #1371! © Fraunhofer IPMS Dr. Rigo Herold I 5.6.2012 I slide 5
  • 6. System Overview System architecture © Fraunhofer IPMS Dr. Rigo Herold I 5.6.2012 I slide 6
  • 7. System Overview © Fraunhofer IPMS Dr. Rigo Herold I 5.6.2012 I slide 7
  • 8. System Overview Specifications: Display: 640 x 480 pixels Viewing-area (µD): 10,2 mm x 7,7 mm Eyetracking camera: 128 x 96 pixels FOV (see-through): 26,5° x 17,2° FOV (info channel): 20° x 21,6° Accomodation distance: 750 mm See-through Transparency: 50 % Eye-motion box: 5,6 mm x 11,2 mm Weight: 198g © Fraunhofer IPMS Dr. Rigo Herold I 5.6.2012 I slide 8
  • 9. Applications Eyetracker Eye-tracking Preprocessing Input Image Adaptive Filtering Histogram Equalization Detecting Corneal Reflections Input image Detecting Pupil Ellipse fitting Gaze-track © Fraunhofer IPMS Dr. Rigo Herold I 5.6.2012 I slide 9 Detection of pupil (red) and reflections (green)
  • 10. Bidirectional display -1 ° Radio 53 km/h Displays an image and detects another image on the same device Navi Menu Applications HMD application Tracking eye-movement for users sight and awareness Gaze-based human-display-interaction Interactive augmented-reality © Fraunhofer IPMS Dr. Rigo Herold I 5.6.2012 I slide 10 60 30 Display off
  • 11. Applications Worldmap Fullsize earth map ROI is displayed on HMD Moving ROI by gaze Try this demo at booth #1371! © Fraunhofer IPMS Dr. Rigo Herold I 5.6.2012 I slide 11
  • 12. Summary Bidirectional OLED-Microdisplay Demonstrator OLED based binocular interactive see-through HMD is available Work was in parts sponsored by Federal Ministry for Education and Research of the German government Contact Dr. Rigo Herold (Fraunhofer IPMS) Booth 1371@SID2012 phone: +49-351-8823-216 email: rigo.herold@ipms.fraunhofer.de © Fraunhofer IPMS Dr. Rigo Herold I 5.6.2012 I slide 12 Thank you for attention
  • 13. Optical System HMD-Application See-through optics (beam-splitter, VIS transmissive mirror) Different imaging planes for display and camera Near-infrared illumination of eye scene © Fraunhofer IPMS Dr. Rigo Herold I 5.6.2012 I slide 13
  • 14. Introduction to organic LEDs - OLEDs _ Light emission (silicon wafer) Light emission bottom-emitting top-emitting Lighting transparent conductor Medium and large display ⇒ TFT organic layers metal cathode substrate © Fraunhofer IPMS Dr. Rigo Herold I 5.6.2012 I slide 14 OLED-on-CMOS +