Definition

SED HDTVs are actually a form of FED (Field Emission Display) technology. They both produce images using millions of electron emitters that are located only millimeters from a phosphorus coated screen. They also both produce images and light when electrons collide with the phosphorus coated screen. The differences between SED and FED HDTVs lie in how the electron emitters work.

SED electron emitters use an extremely narrow slit several nanometers wide to help guide the electrons to the correct area of the screen. To get around Toshiba and Canon SED’s patents, Samsung, Sony, and other FED manufactures are using other methods such as carbon nanotubes to correctly direct the electrons.

Speculated Upside

• High contrast ratios
• Great picture quality
• High refresh rate reduces motion blur
• Deep blacks
• Large viewing angles
• Fixed pixel display
• No convergence issues
• Low power

Speculated Downside

• Price
• Burn-in issues
• Low brightness levels

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