IPS vs OLED — Dead Pixels and Burn-In
IPS panels block light from a shared backlight, while OLED pixels generate their own light. That difference decides their failure modes: IPS suffers backlight bleed and glow, OLED suffers uneven ageing and burn-in.
Two different architectures
An IPS panel is a filter in front of a lamp. A backlight shines constantly and each pixel twists liquid crystal to block more or less of it. Nothing about the pixel wears from being bright, because the pixel is not producing the brightness — the backlight is, uniformly, all the time.
An OLED panel has no backlight. Each subpixel emits its own light, which is what allows genuinely black blacks: an unlit pixel emits nothing at all. The cost is that emitting light consumes the organic compound doing the emitting, so subpixels age with use.
What each one gets wrong
IPS panels leak. Because a lamp is always on behind a filter that never blocks perfectly, black is never truly black, and light escapes unevenly around the edges. This shows as backlight bleed at the borders and as IPS glow, a wash of brightness visible in dark corners at an angle. Some of both is normal and generally not treated as a defect.
OLED panels age unevenly. Regions that display static bright content accumulate more wear, and eventually that pattern becomes visible against uniform colour. This is burn-in, and unlike backlight bleed, it develops over time and depends entirely on how you use the screen.
What to check, and when
For IPS, check a full black field in a dark room within the return window. Corner glow is expected; bright clouding along an edge that is visible during ordinary dark content is worth returning. Also run the standard colour cycle for pixel defects, which both technologies can have.
For OLED, a new panel check is mostly about pixel defects and uniformity, since burn-in cannot have developed yet. The more useful OLED check is periodic: run a mid-grey field every few months and look for the outline of anything you display constantly, while a change of habit can still prevent it.
Which to choose
This comes down to how you use the display rather than to which technology is better. Mostly varied content, films and games, in a dim room, favours OLED strongly — the contrast advantage is large and the burn-in risk stays low. A static dashboard, a fixed toolbar, or the same interface on screen for eight hours a day pushes toward IPS, where that pattern costs nothing.
Brightness matters too. OLED ageing scales with how hard subpixels are driven, so a bright room that forces maximum brightness all day is the least favourable case for OLED and the most favourable for a good IPS panel.
IPS and OLED failure modes compared
| IPS (LCD) | OLED | |
|---|---|---|
| How pixels make light | They block or pass a shared backlight | Each subpixel emits its own light |
| Backlight bleed | Possible — light escapes at the edges | Not possible; there is no backlight |
| Black level | Limited by backlight leakage | Effectively no light emitted at all |
| Burn-in | No — pixels do not age individually with use | Possible with static bright content over time |
| Temporary image retention | Possible; clears | Possible; clears, unlike true burn-in |
| Dead and stuck pixels | Possible | Possible |
| What to check on a new panel | Bleed and glow on black; pixel defects | Uniformity on grey; pixel defects |
Test it yourself: Dead Pixel Test
Frequently Asked Questions
Can an IPS monitor get burn-in?
Not in the OLED sense. IPS pixels do not generate their own light and do not age individually with use, so the permanent uneven ageing mechanism is absent. IPS can show temporary image retention, which clears on its own.
Is backlight bleed a defect?
Some is normal on any edge-lit LCD, particularly at the corners, and manufacturers generally do not accept it as a fault. It becomes a reasonable complaint when it is visible during ordinary dark content rather than only on a full black field in a dark room.
Do OLED screens get dead pixels?
Yes. Both technologies can have pixels that fail to light or become stuck. Dead and stuck pixels are manufacturing defects and are unrelated to the burn-in question.
Which lasts longer, IPS or OLED?
It depends on use. An IPS panel used heavily with static content will outlast an OLED in the same role, because it has no ageing mechanism to trigger. With varied content at moderate brightness, a modern OLED's mitigations make the difference much smaller than it used to be.
Should I avoid OLED for office work?
Not automatically, but it is the use case that carries the most risk, because toolbars and taskbars are static and on screen all day. Auto-hiding persistent interface elements and running moderate brightness reduces that risk considerably.
Sources: MDN — Fullscreen API
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