I see everyone talk about OLED like it’s the best thing ever and it’s been a thing for years yet it’s not a standard in the industry. Like for example an original PS Vita had a OLED screen then they removed it for the 2nd version of the PS Vita.
Even the Nintendo Switch which came out years after the PS Vita didn’t have an OLED and just a few years ago now it does.
Why isn’t it the standard if it’s so good?
In: Engineering
The light source for LED is a backlight the size of the whole display (we’ll ignore dimming zones for this explanation). Each pixel is like a little door. The pixel is “on” when the door is open, letting light through, and “off” when the door is closed. But if you’ve ever stayed in a dark room with the door closed but hallway lights on, you’d noticed that there’s a little bit of light leaking through the edges of the door. Same thing here, so even when the pixels are off, they’re never truly dark.
In an OLED, each pixel is its own light source, like a tiny little light bulb. So when it’s off, it’s completely dark. So OLED has superior “black levels” and contrast. But millions of tiny little light bulbs are more expensive to make than one giant light bulb with millions of little tiny doors.
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