DEAD PIXEL TEST
Inspect your screen for stuck or dead pixels across the full spectrum.
Click the button below to enter full-screen mode, then use your mouse or arrow keys to switch colors.
The Science of Pixel Fault Detection
A Dead Pixel occurs when a transistor fails to provide power to the sub-pixels, resulting in a permanently black spot. Conversely, a Stuck Pixel is caused by a hardware malfunction where a sub-pixel (Red, Green, or Blue) is permanently receiving power, causing it to stay a specific color. Scientifically, our tool utilizes Solid Field Projection to isolate these sub-pixels. By switching between primary additive colors (RGB) and neutral values (White/Black), the tool allows the human eye to detect inconsistencies in the TFT (Thin Film Transistor) matrix. In 2026, with the rise of 8K displays, these tests are critical for verifying the Luminance Uniformity of high-density panels.
Pixel Defect Classification
How to use the tool
1. Preparation: Clean your screen thoroughly with a microfiber cloth to avoid mistaking dust for dead pixels.
2. Initialization: Click 'Start the Test' to enter full-screen mode. This is necessary for total coverage.
3. Inspection: Click the screen or use arrow keys to cycle through Red, Green, Blue, White, and Black. Inspect every inch of the screen closely.
Questions and Answers (Q&A)
Truly dead pixels (black) are usually hardware failures. However, 'stuck' pixels can sometimes be revived by rapidly cycling colors or applying gentle pressure (not recommended without professional advice).
Legal Disclaimer & Advice
Please consult with a professional technician or your manufacturer's warranty policy if you find defects. Most brands have a 'Dead Pixel Policy' that defines the minimum number of faults required for a screen replacement. This tool is for diagnostic purposes only.