LED TVs, or Light Emitting Diode TVs, are a popular type of television that uses LED backlighting to produce images on the screen. Here's a brief overview:

How LED TVs Work

• Backlighting: LED TVs use LEDs to illuminate the display. The LEDs are either placed behind the screen (full-array backlighting) or along the edges (edge-lit). This lighting technology enhances brightness and contrast compared to older LCD TVs that used CCFL (cold cathode fluorescent lamps).
• Display Technology: LED TVs are essentially LCD (Liquid Crystal Display) TVs with LED backlighting. The LEDs light up the pixels on the screen, allowing them to produce the images you see.
• Types of LEDs:
  • Edge-Lit: LEDs are positioned around the edges of the screen. This allows for thinner displays but can sometimes result in uneven lighting.
  • Full-Array: LEDs are distributed evenly behind the screen. This provides better control over local dimming, enhancing contrast and black levels.

Advantages of LED TVs

• Energy Efficiency: LED TVs are more energy-efficient compared to older LCD TVs due to the use of LEDs, which consume less power.
• Brightness: They offer higher brightness levels, making them suitable for viewing in well-lit rooms.
• Color Accuracy: With advancements like quantum dots in QLED TVs (a type of LED TV), color accuracy and vibrancy have improved significantly.
• Slim Design: LED TVs are typically slim and lightweight, making them easy to mount on walls.

Variants of LED TVs

• QLED (Quantum Dot LED): Uses quantum dots to enhance color and brightness. Popularized by Samsung, QLED TVs offer better color reproduction and brightness than standard LED TVs.
• Mini-LED: A newer technology where smaller LEDs are used, allowing for more precise control of backlighting, improving contrast, and reducing issues like blooming.

Considerations

• Viewing Angles: LED TVs often have narrower viewing angles compared to OLED TVs, which can result in color and contrast degradation when viewed from the side.
• Black Levels: Although LED TVs have improved black levels, they might not reach the true black levels that OLED TVs offer.

Market Presence

LED TVs are widely available and come in various sizes and price ranges. They dominate the TV market due to their balance of performance, price, and energy efficiency. Brands like Samsung, Sony, LG, and Vizio are leading manufacturers of LED TVs.