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1. Micro & Nanotechnologies for displays and data storage in portable systems: a quick overview Dr. Eric Mounier
YOLE DEVELOPPEMENT
3. Competitive technologies Non-microsystems technologies:
LCD: a mature and established technology
OLED are being developed and is competing with the conventional LCD technology
Players: Sanyo (availability in 2003), CDT (UK)
Microsystems technologies (integrating µoptical, µelectronical, µmechanical features in the µm range):
Micro-mirror arrays or MMAs
Grated Light Valves or GLVs
Liquid Crystal on Si or LCOS
Field Emission Dispalys or FED
4. LCD
5. An improvement to the LCD: the BiNEM Technology The BiNem® technology is the latest generation of LCD technology keeping display content without any power supply
The BiNem® technology has a very high performance level : excellent contrast, very wide viewing angle and neutral colorimetry.
Potential applications in smart cards, e-tags
Player: Nemoptic (www.nemoptic.fr)
6. OLEDs
7. Microsystems technologies: MMA, GLC
8. Microsystems technologies: LCOS, FEDs
9. FPDs’ characteristics
10. Microdisplays roadmap
11. Evolution of the needs in data storage New applications and services lead to data storage increase:
E-Medicine, video on request, interactive 3D video, genome database, biometric data base (finger prints) …
And new technologies are developed:
Magnetic storage is the most used technology today and Thin Film Heads have increasing performances
But superparamagnetic effect limit could be reached (60 – 70 Gb/in˛ is the limit)
Other technologies are currently developed to reach 100 Gb/in˛ in 2005:
Optical technologies:
Holography
Blue laser
Nanotechnologies:
Nanomechanical storage
Atomic resolution storage (the quantum level of an atom becomes the storage media; HP + Darpa project; Objective: 1 Tb/in2 in 2007) …
12. Applications roadmap
13. An example of optical technologies: blue laser diodes, the challenge 9 major players have prepared specifications for the next generation of optical disk: « Blue-ray Disc » based on blue-violet laser diode
Players are: Hitachi, LG, Matsushita, Pioneer, Philips, Samsung, Sharp, Sony and Thomson.
Capacity: 27 Go for 1 single side disk.
14. Blue laser diodes, state of art Today, only Nichia (J) is commercializing blue laser semiconductor based on GaN grown on sapphire. Its life-time is approximately 15.000 hours for 30 mW power, which is compatible DVD applications.
Outsiders are:
Sony (J): 15.000 hours (not commercialized)
Cree (US): 1000 hours
Xerox (US): 100 hours
Samsung (K): 2 hours
Osram (D)
NTT, Toyoda Gosei, Sharp have demonstrators
Prices remain very confidential and appears to be not compatible with high volume production of appliances today (Nichia: 1500 € / chip in 2000)
15. An example of nano-device: the Millipede (IBM) High-density data storage system based on AFM:
Thermomechanical storage: Tiny depressions melted by an AFM tip into a polymer medium represent stored data bits that can then be read by the same tip
Densities in the hundreds of Gb/in˛ range
The read/write head consists of an array of more than 1 000 thermomechanical probes, fabricated on a single silicon chip using VLSI microfabrication techniques
Packaging issue ?
16. Technical characteristics
17. Technologies roadmap
18. Conclusions Today, portable applications are driving micro and nanotechnologies developments
Some challenges are :
Development of high resolution microdisplays with low consumption
Increase of data storage capacity
Micro-displays technologies:
OLED
Micro-mirrors
FED w/ CNT
Data storage.
Read/Write heads is still the main MST market: more than 13 billion $ in 2005
Nano-thermomechanical system using arrays of AFM tips.
Hundreds of Gb/in˛ could be achieved.
But the magnetic limit is not yet reached !
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