Skip to main content

What is the difference between LCD and LED TV?


An LCD and LED screen are the same functionally. The LC in LCD is liquid crystal, which means a silicon crystal that moves when an electrical signal is applied. In this case, it twists when a signal is applied. Two crystals together then form a prism, with the color coming out of the prism being determined by how much the crystals twist. This then forms a pixel of a certain color, based on the signal applied.

 The difference between an LED and LCD screen is the back light behind the screen that generates the light that comes out of the prisms. An LCD screen uses a diffused bright white fluorescent lamp. An LED screen uses an array of bright white LEDs. The advantages are: If the fluorescent lamp burns out, the entire picture goes away (just black screen). But, if one LED goes out, you may not even notice it. The LEDs have much better even coverage across the screen. They also use a lot less energy, don't get as hot, and allow for a much thinner and lighter TV set.

 An LED is probably about 20% more expensive than an LCD TV. But, eventually, that will be the standard and you probably won't be able to even purchase an LCD TV any more.

 Summary:

  • LCD: Fluorescent back light
  • LED: LCD with White LED back light

Comments

  1. UnknownDecember 11, 2012 at 11:51 AM

    Actually LED is also a type of LCD but it's just improved version. Both are good as LED is expensive than LCD so it's little better than LCD.
    -------------------------------------
    Scootercity

    ReplyDelete
  2. Tech AdminDecember 11, 2012 at 12:17 PM

    http://pnperl.blogspot.in/2012/05/three-minute-tech-amoled.html

    ReplyDelete

Post a Comment

Popular posts from this blog

Gujarati/Family relations

Gujarati/Family relations - Wikibooks, open books for an open world In Gujarati culture: These are the "titles" for family members. With the exception of Father, Mother, and Grandparents (who are called by the title only), all of these titles are added after the name of the person. Father: Papa or Bapuji Mother: Ba, Mummy or Maa Brother (also male cousins): Bhai (e.g. Haresh Bhai) Brother's Wife: Bhabhi (e.g. Komal Bhabhi) Sister (also female cousins): Ben (e.g. Mayuri Ben) Older Sister: Didi (e.g. Mayuri Didi) Sister's Husband: Banevi or Jijaji (e.g. mahesh Jijaji) Father's Younger Brother: Kaka (e.g. Rajesh Kaka) Father's Younger Brother's Wife: Kaki (e.g. Komal Kaki) Father's Older Brother: Kaka(e.g. Jiten Kaka) Father's Older Brother's Wife: Kaki (e.g. Bhavna Kaki) Father's Oldest Brother: Mota Kaka(e.g. Jiten Kaka) Father's Oldest Brother's Wife: Moti Kaki (e.g. Bhavna Kaki) Father's Sister: Foi,Fui (also
3 comments
Read more

How to turn off Xiaomi "Don't cover the orange area" or "Don't cover the earphone area"

If you get the “Don’t cover the orange/earphone area of the screen” message when you turn on your phone’s screen all the time, it means that you’ve turned on the Prevent pocket dial feature and something is blocking the proximity sensor at the top part of your phone. Sometimes it's quite annoying and simple one-time solution is to press volume up & back button at a time to disable. Infact Prevent pocket dial is a good feature that prevents you from rejecting or picking up calls by accident when the phone is in your pocket by using the proximity sensor. If this feature isn’t working properly on your Xiaomi phone, the check whether anything is blocking area next to earphone where proximity sensor is placed. Mostly it caused by screen guard. You should remove it. If you still facing problem then here’s how to turn it off: 1. From your device’s Settings, tap Lock screen & password. 2. Slide the Prevent pocket dials switch to the off position. (Slider will be greye
Post a Comment
Read more

Disable Google Chrome extensions auto update

Disabling extension update: Edit preferences json-file for Google Chrome on Windows:  C:\Users\<USERNAME>\AppData\Local\Google\Chrome\User Data\Default\Preferences on Ubuntu for Chromium:  ${HOME}/.config/chromium/Default/Preferences In this file find the extension preferences block and set  "update_url"  property like  "http://localhost"  for example. For now according to given url updating of that extension is simply impossible. To locate that preferences block use extension id which you can find at  chrome://extensions/  page with "Developer mode" enabled. In simpler words, open "Preferences" file with wordpad and replace "update_url":"https://clients2.google.com/service/update2/crx" with   "update_url":"https://localhost" source:  https://productforums.google.com/d/msg/chrome/l3zOZeO-5-M/Y7VaR0KCWNIJ Disable all Google Chrome updates: 2.1. Any OS Just type  chrome://p
1 comment
Read more