How Does LED TV Work

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Updated January 20, 2023

Flat-screen televisions have become the standard for many households. Most TVs are categorized as LED or within a subset of LED TVs, such as quantum (QLED) or organic (OLED). Many manufacturers are now adopting LED TVs when creating the top-rated TVs in the market. A better understanding of how the LED lights affect the TV and which panel type is ideal for you may answer the question of what is LED TV.


  • LED TV uses light-emitting diode lighting to illuminate a liquid crystal display (LCD.)
  • Some advantages to using an LED TV include 20-30% lower power consumption and increased image quality.
  • LED TVs achieve good image quality at a lower price than OLED and QLED TVs.

What Is an LED TV, and How Does It Work?

A light-emitting diode (LED) TV is a type of liquid crystal display (LCD.) LCD TVs require backlighting, which is where the LED comes into play. The LED light shines through the liquid crystals and other components within the TV to create the image on the screen. Although many LCD TVs utilize LED lighting, TVs using LED fall under the matching TV type.

LED TVs typically have 20-30% lower power consumption and a longer lifespan. Additionally, if energy conservation is important to you, we have more energy-saving tips for televisions you can read. Additionally, people may associate LED TVs with impressive picture quality in sharp details, deep blacks, and vivid colors. This is great when streaming movies or if you want to mirror your phone to the tv and project something on your screen. The LED lighting allows the TV to appear the same in different lighting situations.

There are several different choices when it comes to LED TVs. They come in 4K models, which give twice the line resolution of a standard LED TV. In addition, smart TVs are available as LED TVs. These smart TVs connect to WiFi and access various video and music applications. In some cases, consumers also can control their smart TVs by voice.

Additional types of paneling for LED TVs

So now that you know what LED TVs are, you may be wondering what an OLED TV is. Organic light-emitting diode (OLED) TVs rely on a material that glows when exposed to electricity. People call this phenomenon electroluminescence, and it occurs in some organic compounds. Different colors use different materials. These compounds create light when electricity passes through them.

Quantum dot light-emitting diode (QLED) TVs use a nanoparticle to produce the colors for the screen instead of white LEDs and color filters. The color produced by each nanoparticle depends on its size, with the smallest being blue and the largest being red. The reason these particles may be ideal is to create a higher intensity within the colors being shown. If you like learning about these different types of panels, you may be interested in learning how 3D TVs work. Admittedly, these TVs are not as popular as they once were, but you may find them interesting to read about.

LED, OLED, and QLED: Which Panel Type Is Right for You?

  • LED TVs provide better picture quality than their plasma predecessors. LCD TVs that use LED cannot block the entirety of the light shining through in dark areas of the screen. People use LED TVs in a variety of different settings, including both sunny and dark rooms.
  • OLED boasts better picture quality than LCD in exchange for a higher price. OLED also offers higher contrast ratios because these TVs can produce extremely dark blacks. However, OLEDs are not as bright as many LCDs. As a result, these TVs may be harder to see in well-lit rooms or in direct sunlight. In addition, OLED TVs are susceptible to image retention.
  • QLED produces more saturated colors and sharply defined primary colors because of colored particles as opposed to white light. It is typically used in TVs that focus on high-quality images. This can be perfect if you intend to cast to your tv as you can enjoy high-quality movies. However, QLED TVs are more expensive than LED TVs.

When purchasing a TV and considering each of these options, people should consider the importance of image quality against the price. For example, people who wish to have higher quality images may lean toward getting an OLED or QLED TV, but image clarity increases with a higher price tag. On the other hand, LCD TVs lit using LED still provide increased image quality but generally at a lower price than OLED and QLED.


What do LCD and LED mean?

LCD stands for liquid crystal display and refers to TVs that utilize backlit color filters and liquid crystals. LED describes the light-emitting diode lighting that provides backlighting for many LCD TVs.

What are the different types of LED TVs?

LED TVs can be found in the standard LCD, quantum dot (QLED,) and organic (OLED) versions. In addition, each of these types of TVs can come as a smart TV.

What does it mean when a TV is LED?

Products marked as LED simply mean that the backlighting system for the LCD is achieved using light-emitting diodes.

Can I mirror my iPhone Screen with Google Chromecast?

While mirroring your iPhone using most streaming devices is relatively straightforward, with Google’s Chromecast, it’s a bit more challenging and will require you to either purchase a third-party app like Airserver, which is $20, or APowerMirror, which is free but includes an unremovable watermark display on-screen.

STAT: Typically 20–30% lower power consumption and longer lifespan (source)

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