LED Module
29/10/2013 09:42
As a side-biggest weakness is not local dimming, the LED lights focused on the television on the LED Bulb edge of the light guide plate must be uniform output to the TV screen. Therefore, it is difficult to achieve an area of the screen's brightness. The direct type, since it is possible to achieve through the LED driver chip LED switching to a local, so local dimming on the obvious advantages. As a combination of two technologies, can do the same matrix backlight local dimming function, and controllable partitions determined entirely by the LED driver. At this early some matrix products, compared to the current direct type, there will be more manageable partitions.
(2) Thickness: about thickness, it is a direct type backlight of a fatal weakness, even Sharp uses LED + lenslet approach significantly reduces the elimination of LED lights in the thickness of the whole thickness of its television is still far higher than the side-guide optical thickness, which is in the two kinds of LED backlight technology, the direct type completely defeated the main reason. It can be said matrix backlit perfect solution to this contradiction.
3 Screen Contrast: expressive as image quality is very important, relatively speaking, the LCD contrast is a weakness. Since the liquid crystal twist never able to achieve full control switch 0,1, therefore, usually side-LCD contrast dimming technology it even if the application but in the thousands or so. And straight down the performance of optical technology such as the black screen when the LED is off, the contrast can be greatly improved, according to LG claim that their contrast can reach 700 million: 1.
