field emission display screen seminars report

[seminar class]

Prepared By:
Ryan Michaud
Adam Neale
Andrei Iakimtchik

---

[attachment=10855]
Field Emission Displays
 The future of display technology?
History of Display Technology
Cathode Ray Tube
1950’s
 Cathode Ray Tubes (CRT)
 Liquid Crystal Display
 Plasma Display Panel
Technology Comparison
 Advantages
 Good color representation
 Large viewing angle
 Fast response time (50 µs)
 Low price
 Multiple resolutions
 Shortcomings
 Large and bulky (2 kg/in)
 Flicker causes eye strain
 High power (11 W/in)
[b]Advantages
Shortcomings
 Light weight (0.6 kg/in)
 Low power (5 W/in)
 Less eye strain
 High brightness (500 Cd/m2)
 Small viewing angle
 Slow response time (8 ms)
 Weaker contrast & color
Advantages
Shortcomings
 High brightness (1000 Cd/m2)
 High contrast (10000:1)
 Large viewing angle
 More power vs LCD (8 W/in)
 Burn-in effect
 Size limitation (>40”)
 Slow response time
 FED: The Best of Both Worlds
Promised Advantages
 Very light (100 g/in)
 Large Viewing angle (178o)
 Extremely fast (20 ns)
 Low power (0.2 W/in)
 High contrast (10x PDP)
 No flicker
 No dead pixels
How FED Works?
 Array of mini-CRTs
 Technology Options - SED
 Technlogy Options - Spindt
 Technology Options - CNT
 Companies Researching FED
 Canon and Toshiba joint venture in SED
 Sony promises Spindt-type FED display in 2009
 Samsung is researching CNTs, Applied Nanotech Inc. have made a 25” display
Challenges: Technical Problems
 Fluctuations in emission current
 Low cost manufacturing methods
 Developing for large areas
 Tip damage
 High vacuum levels required
Dropping LCD prices
 LCD panels are dropping in cost while increasing in quality
Hope for FED Displays
 The success of FEDs depends on:
 Cost
 Quality
 Timing