A LED monitor or a LED display is most common in our daily life. We use it in our PC, in our phone or in our Car. But have you ever thought about how a LED backlit display is made of, or how does it work? Here is a brief introduction.
An LED-backlit LCD is a flat panel display which uses LED backlighting instead of the cold cathode fluorescent (CCFL) backlighting used by most other LCDs. LED-backlit LCD DISPLAYs use the same TFT LCD (thin film transistor liquid crystal display) technologies as CCFL-backlit LCD DISPLAYs.
Image quality is mainly based separate of backlight kind, on TFT LCD technology. While not an LED display, a television using this screen is known as an "LED DISPLAY" by some producers and providers. In UK, the Advertising Standards Authority has made it clear in correspondence that it will not object to using the term "LED DISPLAY", but needs it to be described in marketing.
Three kinds of LED may be used:
LED backlighting (Complete array)- behind the display, whose brightness isn't controlled separately
LEDs controlled independently (or in bunches) to restrain the amount of light/colour intensity in certain area of the display.
Let us clear this up right away: LCD and lED technologies will not be mutually exclusive. To question exactly what the differences are is like asking exactly what the difference is between rubber soles and Vibram FiveFingers shoes.
The definition of LCD stands for liquid crystal display. LCDs use liquid crystals to express that which you see on the display. The crystals become a shutter for the backlight, and, with respect to the kind of charge given to them from the computer screen's built in electrodes, the crystals will either let light through to the consumer or shut it out, thus enabling the pixels to state their proper colours, making up that which you see on the display.