ELI5: How LCD TV Works?
Imagine your window blind, but super tiny and with colors! That's kind of how a LCD TV works.
Think about it like this:
- Backlight: Imagine a really bright flashlight behind the "window blind." This
backlightshines a white light through everything. This light is always on.
- Liquid Crystal Shutters (LCDs): These are the "window blinds." They're tiny, tiny doors that can open and close to let light through, or block it. They don't make light themselves; they just control how much light passes through.
- Colors: Now, imagine three colored pieces of plastic: red, green, and blue. These are
color filters. Each tiny "window blind" has one of these filters right in front of it.
- Putting it all Together:
backlight shines white light.
The LCDs open or close for each color (red, green, blue).
If the red LCD is open a lot, lots of red light gets through.
If the blue LCD is mostly closed, very little blue light gets through.
* Our eyes see the mix of red, green, and blue light and create all the different colors on the screen!
So, your TV is just a bunch of tiny, colored "window blinds" opening and closing really fast to make a picture. A computer chip tells each "window blind" exactly how much to open or close to create the perfect color for each tiny spot (pixel) on the screen!
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