15-05-2012, 11:42 AM
RECENT ADVANCES IN DISPLAY TECHNOLOGIES
[attachment=22065]
FED Principles
Field emission displays, electrons coming from millions of tiny microtips pass through gates and light up pixels on a screen. This principle is similar to that of cathode-ray tubes in television sets. The difference: Instead of just one "gun" spraying electrons against the inside of the screens face, there are as many as 500 million of them (microtips).
Cathode
The cathode/backplate is a matrix of row and column traces. Each crossover lays the foundation for an addressable
cathode emitters.
Each crossover has up to 4,500 emitters, 150 nm in diameter. This emitter density assures a high quality image through manufacturing redundancy, and long-life through low operational stress.
Pixels
Faceplate picture elements (pixels) are formed by depositing and patterning a black matrix, standard red, green, and blue TV phosphors and a thin aluminum layer to reflect colored light forward to the viewer.
FED advantages
Inherently high luminous efficiency
No Response Time issues
CRT-like Colour Gamut
Lower Power Consumption
Cold Cathode Emission
Distance between cathode and screen ~0.2–5mm
Flat Panel Technology
Matrix Addressed – No DY
Capital investment for manufacturing VLS TV with printable CNT FEDs - 1/10th of LCD
Cost advantage over LCD could be 40%
[attachment=22065]
FED Principles
Field emission displays, electrons coming from millions of tiny microtips pass through gates and light up pixels on a screen. This principle is similar to that of cathode-ray tubes in television sets. The difference: Instead of just one "gun" spraying electrons against the inside of the screens face, there are as many as 500 million of them (microtips).
Cathode
The cathode/backplate is a matrix of row and column traces. Each crossover lays the foundation for an addressable
cathode emitters.
Each crossover has up to 4,500 emitters, 150 nm in diameter. This emitter density assures a high quality image through manufacturing redundancy, and long-life through low operational stress.
Pixels
Faceplate picture elements (pixels) are formed by depositing and patterning a black matrix, standard red, green, and blue TV phosphors and a thin aluminum layer to reflect colored light forward to the viewer.
FED advantages
Inherently high luminous efficiency
No Response Time issues
CRT-like Colour Gamut
Lower Power Consumption
Cold Cathode Emission
Distance between cathode and screen ~0.2–5mm
Flat Panel Technology
Matrix Addressed – No DY
Capital investment for manufacturing VLS TV with printable CNT FEDs - 1/10th of LCD
Cost advantage over LCD could be 40%