LCD AND LED - LCD stands for “liquid crystal display” and technically, both LED and LCD TV’s are liquid crystal displays. The basic technology is the same in that both television types have two layers of polarized glass through which the liquid crystals both block and pass light. LED, which stands for “light emitting diodes,” differs from general LCD TV’s in that LCD’s use fluorescent lights while LED’s use those light emitting diodes. LED TV’s provide a better picture.

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LCD and LED

What’s the difference between LCD and LED?

BY HOWSTUFFWORKS.COM CONTRIBUTORS

LCD stands for “liquid crystal display” and technically, both LED and LCD TV’s are liquid crystal displays.

The basic technology is the same in that both television types have two layers of polarized glass through which the liquid crystals both block and pass light.

So really, LED TV's are a subset of LCD TV's.

LED, which stands for “light emitting diodes,” differs from general LCD TV's in that LCD's use fluorescent lights while LED's use those light emitting diodes.

Also, the placement of the lights on an LED TV can differ.

The fluorescent lights in an LCD TV are always behind the screen.

On an LED TV, the light emitting diodes can be placed either behind the screen or around its edges.

The difference in lights and in lighting placement has generally meant that LED TV's can be thinner than LCD's, although this is starting to change.

It has also meant that LED TV's run with greater energy efficiency and can provide a clearer, better picture than the general LCD TV's.

LED TV's provide a better picture for two basic reasons.

First, LED TV's work with a color wheel or distinct RGB-colored lights (red, green, blue) to produce more realistic and sharper colors.

Second, light emitting diodes can be dimmed.

The dimming capability on the back lighting in an LED TV allows the picture to display with a truer black by darkening the lights and blocking more light from passing through the panel.

This capability is not present on edge-lit LED TVs; however, edge-lit LED TV's can display a truer white than the fluorescent LED TV's.

Because all these LCD TV's are thin-screen, each has particular angle-viewing and anti-glare issues.

The backlit TV's provide better, cleaner angle viewing than the edge-lit LED TV.

However, the backlit LED TV will usually have better angle viewing than the standard LCD TV.

Both LED and LCD TVs have good reputations for their playback and gaming quality.

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