29 November 2013 by Permi Krishna
The major difference between an LCD and LED-LCD is that here LEDs are used inside the TVs for illumination. The two types of technology used in the LED TVs are the Direct backlit and Edge lit. As the name suggests, the placement of the LEDs is either along the edges or along the back of the LCD panel.
The direct backlit or full LED TVs have the local dimming technology wherein light in specific segments of the LEDs can be controlled by algorithms to switch on and off individually. It means the image can have greater contrast - bright whites and deep black in the same image. Compared to the edge lit LED TVs, direct backlit TVs has fewer LEDs as they are placed all over the back panel at regular distances. But they have to be arranged farther away from the screen to provide adequate light coverage across the panel thus increasing the depth size.There are also TVs which employ direct or full LED backlit without dimming technology.
The comparatively expensive price of the backlit LED TVs is another factor to be considered when buying these sets. They also have the 'halo effect' problem wherein image clarity is lost due to the appearance of a halo or ring around bright objects. But this problem is being addressed by the manufacturers to minimise its effects.
Whichever technology you opt for when buying the best LED set, the total energy consumption and the panel size is less than an LCD or plasma TV. Take a look at the best direct backlit LED TVs for this year as shown below which have been rated by top experts from around the web.