What is a dead pixel?
A dead pixel is a pixel on a display that does not light up at all. On a bright background, a dead pixel will appear as a black or dark dot.
What is a White Screen Test?
A white screen test is a method for inspecting a display by showing solid color backgrounds to identify problems. This method can effectively detect:
- Dead Pixels: Pixels that do not light up at all, appearing as black dots on a light background.
- Stuck Pixels: Pixels that are stuck on a single color, appearing as colored dots on a white background.
- Uneven Brightness: Differences in brightness across various areas of the screen.
- Color Cast/Deviation: Inaccuracies in the colors displayed by the screen.
- Backlight Bleed: Issues with the uniformity and light leakage of the LED backlight.
Main Features
🎨 Custom Background Color Selector
- • Supports HEX color value input
- • Built-in color picker
- • 10 common preset colors
- • Real-time background preview
🖥️ Fullscreen Test Mode
- • One-click to enter fullscreen mode
- • Immersive testing experience
- • Supports ESC key to exit
- • Adapts to various screen sizes
How to Use
1
Select a Test Color
Choose a background color from the control panel. You can use the color picker, enter a HEX value, or select a preset color.
2
Enter Fullscreen Mode
Click the fullscreen icon for the best testing experience. Fullscreen mode eliminates distractions from the browser interface.
3
Inspect the Screen Carefully
Examine the entire screen closely for any abnormal dots, areas, or color deviations. It's recommended to view from different angles.
4
Test Multiple Colors
Switch between different background colors for comprehensive testing, especially white, black, red, green, and blue.
Testing Tips
🔍 Detecting Dead Pixels
- • Use a white background to find black dots.
- • Use a black background to find bright dots.
- • Test in a dimly lit environment.
- • Maintain a proper viewing distance.
🎯 Detecting Stuck Pixels
- • Use red, green, and blue backgrounds.
- • Look for pixels that remain a fixed color.
- • Check the edges and corners of the screen.
- • Note the location of any problematic pixels.
Frequently Asked Questions
What is a stuck pixel?
A stuck pixel is a pixel on a display that is stuck on a single color. A stuck pixel will constantly display a fixed color that does not change with the background.
How do I know if my monitor needs to be repaired?
If you find more than 3-5 dead or stuck pixels, or if there are severe issues with uneven brightness or color deviation, it is recommended to contact customer service.
What should I pay attention to during the test?
Maintain a suitable viewing distance, ensure the ambient lighting is moderate, avoid direct glare on the screen, and observe the screen from different angles.
Which devices does this tool support?
It supports all modern browsers and devices, including desktops, laptops, tablets, and smartphones. For best results, it is recommended to use it on a large screen.
Ready to Start Testing?
Now that you know how to use WhiteScreen, you can start checking your monitor.
Start Testing