Textfeld:

Hypoled

Project Acronym:

 

 

 

 

 

 

 

 

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Schematic System Integration

Schematic Projection Scheme

OLED microdisplay

Regarding OLED integration in this project Small-Molecule and Polymer technology will be used to achieve optimal performance. From the start, both approaches target different applications: On the Polymer-LED technology side improved white polymer materials will be used, which will serve mainly HMD applications. On the other hand, for micro-projection applications high brightness (up to 10000 nits) is one of the most important target parameters. Here highly efficient SM-pin-OLED structures will be used for the first time for microdisplays. To significantly extend the color gamut and to reduce the overall complexity of the fabrication process an RGB sub-pixel patterning technique will be applied for microdisplay manufacturing for the first time. For easy integration of the microdisplay in full-featured multimedia systems, a standardized high-speed serial video interface will be added in order to reduce system-level complexity.

Main targets:

· High resolution (VGA)

· High Brightness (up to 10000nits)

· Low power (estimate <100mW@100nits P-OLED, <300mW @1000nits PIN-OLED)

· Low voltage operation

· True color (24 bit)

· Small pixel size (»12µm)

 

Optics

Wearable Personal Display (HMD)

Wearability of the system is essential to get optimal acceptance by the user. So the target of the project is to integrate high efficient optical elements with small size and low weight.

The integrated optical system (IOS) enables a personal screenless high resolution display by projecting images and data from computers, palm-units, DVD players, or cameras directly into the viewer’s eye. The IOS enables a large image mobile display. It turns small images into large images, in a large field of view, enabling the viewer to see images from a full color display equivalent to a large, distant screen.

Micro-Projection Unit (MPU)

The goal of this unit is the integration of a microdisplay-based projection unit in wearable electronics, to enable multiple users to share visual information provided e.g. by mobile phones, PDA, or similar. For these applications the thickness of the complete system has to be smaller than 15mm to fit mechanically into the addressed electronic systems. Main goal will be the realization of a compact projection system for screen widths of approximately 12cm to 15cm. The optical system has to ensure good optical quality of color images, quite high depth of focus, and sufficient brightness for daylight applications. Special requirements arise from the small thickness of such a system. An optical system for this application is not state-of-the-art and requires innovative optical approaches to reach good optical quality AND small mechanical dimensions. All kinds of optical principles – diffraction as well as refraction – have to be considered for the realization of this innovative system.

 

Multimedia interface

The target objective of HYPOLED is to allow the visualization of listed digitally broadcasted video programs. This shall be achieved by a so called Mediabox, which will combine the required wireless interface, needed video processing including video decompression and scaling as well as the corresponding high-speed serial interface of the OLED microdisplay to transmit the uncompressed video stream to the head mounted part of the system. The Mediabox will have a degree of miniaturization which makes it portable.

 

The combination of Mediabox and the head mounted part of the system (OLED microdisplay and HMD/MPU) will lead to a truly personal video experience: For HMD no one else can see what you are watching, which appears much more user-friendly than viewing a two-inch screen at arm's length. In fact 'actually small but virtually large' offers really interesting commercial opportunities. For MPU you can show to everybody information you like to share. Possible Consumer Electronics related application in the “viewing” area include electronic gaming, presentation, data processing, and viewing movies.

 

Main targets:

· Easy to adapt connection of the OLED device to the connected world

· Establishment of a user interface to the connected wireless communications channels

· WLAN interface to request and receive streaming video content

· DVB-H module for TV on OLED device

· DVB-T module for free-to-air television

 

 

 

System integration

In system integration all the components will be integrated in a complete head-mounted display (HMD) and a micro-projection (MPU) demonstrator. This includes the mechanical mounting as well the electrical connection between the different subsystems.

HYPOLED

 

 

 

 

 

 

Textfeld: "Appears small, but looks great"

Full title :

High-Performance OLED-Microdisplays for Mobile Multimedia HMD and Projection Applications

Funding :

EC, STREP, ICT—2007.3.2, 217067

Duration :

January 2008—June 2010

Coordination :

Dr. Uwe Vogel, Fraunhofer IPMS,
Maria—Reiche Str. 2
D—01109 Dresden, Germany

Technical Manager :

Dr. Michael Scholles, Fraunhofer IPMS,
Maria—Reiche Str. 2
D—01109 Dresden, Germany

About the Project

Process of Multimedia, specially Displays:Hypoled develops in this chapter of evolution

Idea of Development:

 

In the past 10 years the function, the content  presentation and the  shape  of  displays  for mobile applications has  changed a lot. But one  major target  has remained all the time: presenting information  in  high-resolution at a  display being as small as possible.  However, with traditional displays the display size is limited by the size of the mobile device. So  one  ha to find a way to  present a larger  image than the  display size of  the mobile  device would  actually  allow. The keywords are: virtual displays and projection.  Virtual displays provide an enlarged image behind the physical display plane and are used in head-mounted display setups. Micro-projection achieves an enlarged image on a screen in front of a display device and has started use in mobile applícations such as mobile phones ("pico projector").

Last update: 19.02.2010

Plan of coordination

High-Performance OLED-Microdisplays for Mobile Multimedia HMD and Projection Applications

Scientific & Marketing Advisor :

Prof. Ian Underwood, University of Edinburgh,

The Kings Buildings
EH9 3JF Edinburgh, Scotland, UK