Google LCD Display and LED Display and you will have more information than you can handle. Stuart
The complete definitions are already covered by others as StuartS has pointed out. Google LCD displays to learn the basic technology. I will explain one difference between the two terms you listed.
BOTH are LCD displays. LED actually just refers to the type of back lighting used in that type of LCD display.
LED back lighting is considered better than florescent for a number of reasons and is generally more expensive.
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