屏幕坏点检测
通过纯色全屏显示来检测屏幕是否存在坏点或亮点
About This Tool
Detect dead pixels, stuck pixels, and screen defects with our free monitor test tool. This display test cycles through solid colors at full screen to reveal any pixel issues on your LCD, LED, or OLED monitor. Identify bright dots, dark spots, and color anomalies quickly and easily. Essential when purchasing a new monitor or checking warranty coverage for screen defects.
How to Use
- Enter fullscreen mode for the most accurate testing
- Cycle through each solid color screen (red, green, blue, white, black)
- Look closely for any pixels that do not match the displayed color
FAQ
What is a dead pixel vs a stuck pixel?
A dead pixel appears black (no light), while a stuck pixel shows a single color (red, green, or blue).
Can stuck pixels be fixed?
Sometimes! Try gently massaging the area or use pixel-fixing software that rapidly cycles colors.
How many dead pixels warrant a warranty claim?
Most manufacturers require 3-5 dead pixels before accepting warranty replacement.
Does this test work on OLED screens?
Yes, it works on all display types including OLED, LCD, LED, and CRT monitors.
Should I test a new monitor immediately?
Yes! Test within the return window to ensure your monitor is defect-free.