Yellow Screen
Display a full-screen yellow color. Useful for checking screen uniformity, dead pixels, backlight bleed, and color accuracy on yellow backgrounds.
Uses for yellow screen
Dead pixel detection: look for pixels that do not display yellow correctly.
Screen uniformity: check for uneven brightness or color patches.
Backlight bleed: especially visible on dark and solid color screens (LCD).
Color accuracy: compare how yellow looks versus reference images.
Testing guide
What a full yellow screen reveals
Yellow is produced by lighting red and green together with blue switched fully off. That makes it a two-channel test: it verifies that red and green work in combination, and because there is no blue at all, any blue sub-pixel that is stuck on shows up unmistakably.
Best for
- Catching stuck blue sub-pixels, which appear as bright dots against the yellow field.
- Checking that red and green render evenly together across the panel.
- Spotting color temperature problems, since yellow exaggerates a warm or cool cast.
How to run the test
- 1Run the yellow fill fullscreen after cleaning the panel.
- 2Scan for any blue, cyan, or white dots, which indicate blue sub-pixels stuck on.
- 3Check whether the yellow looks even across the whole surface or shifts toward green or orange at the edges.
- 4Compare with the red and green fills to confirm which channel causes any unevenness.
How to read the result
A blue or white dot on yellow is a stuck blue sub-pixel, which is often invisible on white or black fills.
Yellow drifting toward green means the green channel is dominant; drifting toward orange means red dominates.
An uneven yellow field usually reflects the same uniformity problems visible on red and green individually.
Related tools and guides
Frequently asked questions
How is yellow made on a screen?
There is no yellow sub-pixel. Yellow is created by lighting the red and green sub-pixels at full intensity while leaving blue completely off. Your eye blends the two into what you perceive as yellow.
Why is a yellow screen good for finding stuck blue pixels?
Because blue is switched entirely off across the whole panel, any pixel whose blue sub-pixel is stuck on becomes the only source of blue on screen. It stands out as a distinctly bright or bluish dot against uniform yellow.
My yellow screen looks green, what does that mean?
The green channel is stronger than red, either because of the panel color balance, a color temperature setting pushed toward cool, or a color profile applying an unintended shift. Compare the pure red and pure green fills to see which one looks off.
Can a yellow screen check color temperature?
It is a useful rough indicator. A monitor set too warm makes yellow look orange and heavy, while one set too cool pushes it toward green. For an accurate reading use a dedicated white balance or color temperature test.
Is yellow useful for OLED burn-in checks?
Yes. Because it drives red and green hard while leaving blue off, uneven wear in either the red or green emitters becomes visible as patchiness that a white field would average out.
Testing guide
What a full yellow screen reveals
Yellow is produced by lighting red and green together with blue switched fully off. That makes it a two-channel test: it verifies that red and green work in combination, and because there is no blue at all, any blue sub-pixel that is stuck on shows up unmistakably.
Best for
- Catching stuck blue sub-pixels, which appear as bright dots against the yellow field.
- Checking that red and green render evenly together across the panel.
- Spotting color temperature problems, since yellow exaggerates a warm or cool cast.
How to run the test
- 1Run the yellow fill fullscreen after cleaning the panel.
- 2Scan for any blue, cyan, or white dots, which indicate blue sub-pixels stuck on.
- 3Check whether the yellow looks even across the whole surface or shifts toward green or orange at the edges.
- 4Compare with the red and green fills to confirm which channel causes any unevenness.
How to read the result
A blue or white dot on yellow is a stuck blue sub-pixel, which is often invisible on white or black fills.
Yellow drifting toward green means the green channel is dominant; drifting toward orange means red dominates.
An uneven yellow field usually reflects the same uniformity problems visible on red and green individually.
Related tools and guides
Frequently asked questions
How is yellow made on a screen?
There is no yellow sub-pixel. Yellow is created by lighting the red and green sub-pixels at full intensity while leaving blue completely off. Your eye blends the two into what you perceive as yellow.
Why is a yellow screen good for finding stuck blue pixels?
Because blue is switched entirely off across the whole panel, any pixel whose blue sub-pixel is stuck on becomes the only source of blue on screen. It stands out as a distinctly bright or bluish dot against uniform yellow.
My yellow screen looks green, what does that mean?
The green channel is stronger than red, either because of the panel color balance, a color temperature setting pushed toward cool, or a color profile applying an unintended shift. Compare the pure red and pure green fills to see which one looks off.
Can a yellow screen check color temperature?
It is a useful rough indicator. A monitor set too warm makes yellow look orange and heavy, while one set too cool pushes it toward green. For an accurate reading use a dedicated white balance or color temperature test.
Is yellow useful for OLED burn-in checks?
Yes. Because it drives red and green hard while leaving blue off, uneven wear in either the red or green emitters becomes visible as patchiness that a white field would average out.