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4 years ago from Raffaello Sanzio, "Designers Should Code" Activist

  • Marc EdwardsMarc Edwards, 4 years ago

    You can definitely consider each pixel to be three little lights. There’s many subpixel patterns used in displays, so they’re not all red, green and blue elements alongside each other.

    LCD displays (branded as IPS, TN and “LED” for related tech) have a white backlight with filters to block the light, so each pixel doesn’t generate light, it blocks the light behind it. OLED is closer to your description, where each element produces light (organic light emitting diode).

    There’s many reasons why there’s differences between displays. Maybe the best way to explain it is with light bulbs. If you bought lots of different kinds of white light bulbs, they’d all look a bit different. This would be especially true if you the bulbs were based on different tech — LED, compact fluorescent, tungsten. They’d have different maximum brightnesses, some would be more orange, some would be bluer. And, if you attached them to a dimmer, they would have different characteristics as you changed the dimmer’s position.

    That’s not a perfect analogy, but should help demonstrate that different displays have different abilities.

    Colour management is an attempt to get the same actual colour to appear across many displays, despite the differences in the displays.

    1 point