How do I know if my laptop screen is LCD or LED?
Best way to be sure is to read the spec as suggested. Any laptop bought in the last 3 or 4 years is almost certain to have an LED backlight. If it is a CCFL backlight there should be a label on the product with words like "contains CCFL lamps, ensure safe disposal" it's a legal requirement in many countries. It's not always easy to tell by looking only at the screen but somethings you could look for.Go to a black screen, and in a darkened room. If there are a sequence of light and dark patches along one or more edges it's an LED. (CCFL is a continous bar, LED an array of point sources).Operate the brigness control from maximum to minimum. If you see either flickering or big change in the colour (hue) it could indicate it's a CCFL. It depends but LED is less likely to have these effects.
Which display is best for Laptops, LCD or LED?
All current laptop displays are LCDs. When you read of an “LED display,” right now that just means an LCD with an LED backlight, as opposed to the older cold-cathode fluorescent lamp (CCFL) technology. The thing is, ALL laptop displays these days use LED backlights, so it's really no distinction.
Which is best among LCD and LED screens?
You are probably comparing LCD and “LED” televisions or computer monitors, right? In that case, the “LED” displays are really just LCD displays with LED backlights.There are true LED displays, where every pixel is made up of individual LEDs. So far these are very expensive, and used mostly for large signs, screens behind stages, and so on. There are also OLED monitors, where the LEDs are organic compounds (the “O” in OLED) printed in a pattern on glass.But an ordinary “LED” monitor or TV is really just LCD. They are called “LED” by the marketing people to make you think they are a new generation of technology instead of a minor update. The “LED” LCDs are an improvement over old fluorescent-backlight monitors - they wake up at full brightness immediately, draw less power, run cooler, and (in my experience) have more uniform white colour. But they use the same LCD panel to form an image.There *are* LED-backlight LCDs which have locally-controllable backlight zones, and those can be used to display HDR (High Dynamic Range) images. But a device that is labelled “LED” without also having “HDR” on it is just a normal full-screen LED backlight which cannot do HDR.