OLED vs. QLED Monitor Screens
Want to get more granular in your choice of LEDs? New screen technology typically hits the TV market first, but trickles down to computer monitors in short time. Two new such monitor types are OLED — Organic Light Emitting Diode — and QLED — Quantum Light Emitting Diode.
Every pixel in an OLED monitor is its own miniature LED light. Unlike regular LED monitors, OLED monitors aren’t technically backlit because each pixel produces its own light and color. If an individual pixel doesn’t receive electricity, it will appear dark. OLED technology offers amazing picture contrast as a result. And because each pixel is individually lit, OLED has an incredibly low response time — 0.1 millisecond — that is great for crisp images and gaming.
QLED monitors use nanoparticles called quantum dots that act as color and light filters. Millions of quantum dots can produce stunning displays of brightness and color. QLEDs offer full color saturation even in brightly-lit rooms. But the downside is that QLEDs have to dim their backlights for dark colors, which makes it difficult to produce a pure black effect like on an OLED. QLED monitors are also best viewed from dead center, so they might not be the best choice for workspaces that need wide viewing angles.
OLED – ‘but not cheap’ 
In a completely sane world, madness is the only freedom (J.G.Ballard).
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