LED or OLED TVs: advantages over a LCD TV
By
A TV natural, subtle colors more brilliant, which consumes much less of an LCD screen classic. We talk about the LED-LCD TV, the novelty of the moment. In a classic LCD screen lighting comes from some fluorescent lights placed behind the screen, but a little ‘light still unable to filter through, creating problems of contrast.
The cells of liquid crystals are never completely opaque and the classic blackis never “really” black, but it seems rather a gray compromising image quality. The natural solution of the current LED-LCD TVs has been to use instead of a grid of fluorescent light-emitting diodes (LED). Is thus changed the lighting of the screen and you can change its brightness, or even shut it down completely in many areas independently of each other.
The benefits range from the strong increase contrast, further reducing the thickness of the screens (LEDs take up less space) and reduce power consumption by 40% at constant brightness. Currently, the only disadvantage of LED-LCD TVs in the price is higher than the conventional LCD.
Here are the prices of a TV LED!
We can define at least three categories with LED backlight, however, very different.
- Edge-LED : the LED is only on the edge of the screen (edge means precisely”Edge”).
- Backlight-LED : a backlighting produced by a grid of white LEDs placed directly behind the LCD screen. Compared to the Edge-LED technology has a greater thickness but greater accuracy.
- RGB-LED : the most important difference compared to the previous category is that the LED, instead of producing white light, producing a light of three colors that combine to form an apparently uniform backlight, with apurest light and uniform compared to white LEDs and a better color rendering.
If the LED-LCD televisions are a perfect solution, today the technology is trying to eliminate all the LCD screen, and create the image using direct light from the LEDs themselves.
The display already exists and is called OLED (the “O” stands for “organic”, since the use of thin films of organic substances). The tiny LEDs create the image without the need for backlighting in because of its already light of his own, with the result of a remarkable brightness of the LCD. The advantages are magnified compared to LED-LCD Tv: higher brightness, higher contrast, reduced power.
Related posts:
1 Comments
May 11th, 2010 at 7:10 pm
Led lights are great because they are long lasting and consumes less electricity.*~”