Televisions with liquid crystal display today are unlikely to surprise anyone, they have firmly entered the life of many people. Their lineup is constantly updated. Not so long ago, in a wide sale there were copies with LED technology. For those who are in the stage of choice and do not know the distinguishing features of TVs of such models, this article is intended.
LCD TV
Pros of LCD
- Long service life.
- Low energy consumption and environmental friendliness.
- No harm to the eyes due to the comfortable perception of the image.
- Lightness.
- No static voltage.
Liquid crystal display is a liquid that conducts electricity, consisting of crystals, which is under pressure and is bounded on both sides by electronic boards. The liquid does not emit light, so to see the image, it must be lighted. This is the stumbling block for the future owner - to give preference to LCD( LCD) or LED technology. LED-backlighting is a diodes( a semiconductor that glows when an electric current passes through it).
Operation of LCD
Crystalline molecules that are in the screen work like a shutter in a camera camera: they miss or do not transmit light. Under the influence of stress, their shape changes, changing and transmitting light. The color in the LCD appears due to the color filter that is installed before each crystal. This explains the need for backlighting for LCD TV.Thus, it becomes clear what distinguishes LCD from LED.
LED Differences from LCD
LED TVs have better image quality due to the fact that their backlighting has many LEDs, it can be adjusted, while changing the color reproduction for the better. LCD TVs have one lamp, which provides illumination to the entire screen, which excludes the possibility of a local change in the illumination of its specific area.
The technology behind LED technology is the future of LCD TVs, manufacturers are seriously thinking about how to use it. This is not surprising, because such characteristics as brightness, contrast are of great importance when perceiving a picture. In addition, the reduction in electricity costs is almost double - this is also a significant bonus in favor of ICE.
Backlight from LEDs can be one or three colors. Multicolored improves color rendition, but in some cases the color itself is slightly distorted. Especially for this, the Local Dimming technology was developed, through which the LEDs are controlled. In this case, too, there are nuances: noticeably the presence of bright and dark spots, while in the darkened areas, some details of objects disappear from the view.
TVs with LED technology differ among themselves depending on the location of the
Direct
diodes. In this case, the diodes are located on the rear of the screen in equal proportions throughout its area.
Edge
The location is only on the perimeter of the screen, and therefore such ICE from the LCD are slightly different. It is easy to imagine that in the first case, due to a larger number of LEDs, both the power consumption and the thickness of the TV are increased.
When buying a TV, the future owner should be aware that, despite the novelty of LED, there are some flaws in its operation. The assurances of sellers that they are advanced technologies for which the future should not be confusing. Comparison of LCD and LED, which was conducted quite a lot, can not reveal an unambiguous unconditional leader.
It is worth considering the model you like in particular. After all, the factors that influence the final image formation are a lot: this is the resolution, and the video processor, and many other details. Despite the cost, the most ordinary LCD TV with a CCFL lamp and decent circuitry is capable of giving excellent picture quality. It should also be taken into account that LED production is cheaper and more profitable for the manufacturer.
Backlight - this is not a determining factor for buying a particular TV model. It is worth considering its characteristics in a complex, only in this case it is possible to choose the best option for yourself.
