Powered by Blogger.

Follow Us on Facebook

Multimedia Updates

Ads

Advertisement With Us

Popular Posts

Sunday, January 5, 2014

LED (Light Emitting Diode)

Posted by Shoaib Mrwt at 2:56 AM 0 Comments




LCD
LCD (LIQUID CRYSTAL DISPLAY)

LCD (LIQUID CRYST


 Short for liquid crystal display, a type of display used in digital watches and many portable computers. LCD displays utilize two sheets of polarizing material with a liquid crystal solution between them. An electric current passed through the liquid causes the crystals to align so that light cannot pass through them. Each crystal, therefore, is like a shutter, either allowing light to pass through or blocking the light.
Monochrome LCD images usually appear as blue or dark gray images on top of a grayish-white background. Color LCD displays use two basic techniques for producing color: Passive matrix is the less expensive of the two technologies. The other technology, called thin film transistor (TFT) or active-matrix, produces color images that are as sharp as traditional CRT displays, but the technology is expensive. Recent passive-matrix displays using newCSTN and DSTN technologies produce sharp colors rivaling active-matrix displays.
Most LCD screens used in notebook computers are backlit, or transmissive, to make them easier to read.
Tags:

Share This Post

Get Updates

Subscribe to our Mailing List. We'll never share your Email address.

0 comments:

This is Muhammad Shoaib Khan ( Marwat) Thanking you for the Comments.......

Recent Articles

Blogroll

Recent News

back to top