What do modern TVs use to display images?

What do modern TVs use to display images?

• A. LED matrix
• B. Plasma display
• C. Liquid crystal display (LCD)
• D. Cathode ray tube (CRT)

Answer: (C)

Modern TVs display images by modulating light with liquid crystals arranged in a grid of pixels. The liquid crystals don’t emit light on their own; instead, they control how much of the backlight’s light passes through, by rotating the plane of polarization when voltage is applied. Each pixel is subdivided into red, green, and blue subpixels, and the combination of those subpixels’ brightness creates the full range of colors you see. Thin‑film transistors drive every pixel, allowing the image to be updated rapidly for smooth video. This approach is the standard for flat‑panel TVs today, typically with LEDs providing the backlight. Other options refer to technologies that either predate LCDs or describe a different display mechanism (like CRTs that use electron beams or plasma cells). So, the best answer is LCD, which underpins the popular LED‑backlit screens used in most modern televisions.

Modern TVs display images by modulating light with liquid crystals arranged in a grid of pixels. The liquid crystals don’t emit light on their own; instead, they control how much of the backlight’s light passes through, by rotating the plane of polarization when voltage is applied. Each pixel is subdivided into red, green, and blue subpixels, and the combination of those subpixels’ brightness creates the full range of colors you see. Thin‑film transistors drive every pixel, allowing the image to be updated rapidly for smooth video.

This approach is the standard for flat‑panel TVs today, typically with LEDs providing the backlight. Other options refer to technologies that either predate LCDs or describe a different display mechanism (like CRTs that use electron beams or plasma cells). So, the best answer is LCD, which underpins the popular LED‑backlit screens used in most modern televisions.