Electronic displays such as liquid-crystal display (LCD) TVs and computer monitors typically require some form of backlight. The backlight is an independent component that’s used to illuminate the display; thus, making it visible to the user. Without a backlight, the user wouldn’t be able to see the display. While there are several different types of backlights available for use in electronic displays, light-emitting diode (LED) is by far the most popular. To learn more about LED backlights and how they work, keep reading.
Before we begin, it’s important to note that there are two different types of LED backlights used for electronic displays: white and RGB. The former is typically used in laptop and desktop computer screens, whereas the latter are used in high-end displays. Of the two, RGB LEDs are said to deliver the best color gamut, as they feature three separate LEDs (red, green and blue). This allows the backlight to create a color spectrum that mimics the color filters in the pixels of the LCD display.
So, what makes LED the preferred choice of backlighting for electronic displays? For starters, they produce minimal heat when compared to other backlighting options. And because they produce less heat, they tend to be safer with a lower risk of electrical fire. Secondly, LED backlights are energy efficient, consuming a fraction of the power of their counterparts. Over the course of several months or years, the energy-efficient properties of LED backlights can save consumers big bucks. So, while LED backlights may cost more, they usually end up saving you money in the long run. Consumers must consider the energy-efficient properties of LEDs when choosing backlighting options for their electronic displays.
LEDs are also capable of producing exceptional quality images — something that can’t be said for other backlighting options. On the other hand, there are also some drawbacks to LED backlights, one of which is difficulty of achieving a uniform illumination. LED backlights may have trouble producing even, consistent lighting throughout the display. The good news is that this usually doesn’t happen immediately; rather, it happens over time. Therefore, as long as you keep an eye on your LED backlight and replace when needed, this shouldn’t be an issue.
Ultimately, you need to weigh the pros with the cons when choosing a backlighting options for your electronic display. Like all backlights, there are both advantages and disadvantages to LEDs.