Display
Monitor backlight bleed observation
Use dark patterns to visually check edge glow or uneven lighting.
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Choose a color, inspect the panel, then confirm only what you saw yourself.
Fullscreen opens without text or buttons. Space / →: next · ←: previous · H: show/hide control buttons · tap the pattern: next · Esc: exit fullscreen. Read these shortcuts before hiding controls.
In a dark room, open a black fullscreen pattern and slowly inspect corners and edges. This is not automatic bleed detection.
Current color: Red (0/4)
Visual confirmation only — not automatic dead-pixel detection or certification.
In a dark room, open a black fullscreen pattern and slowly inspect corners and edges. This is not automatic bleed detection.
Details and limits
Dark patterns plus guidance help you look for bleed. No automatic detection or panel grade.
How to check
When possible, dim the room, open a black fullscreen pattern, and slowly inspect corners and edges.
If something feels wrong
If a bright spot appears, change viewing angle at the same place — do not judge from a photo alone.
Limits
Ambient light, camera exposure, and screen films change what you see. This does not replace factory defect criteria.
FAQ
Bright corners mean the panel is defective?
Some panels show normal bleed. This tool only helps you observe.
Does it find bleed automatically?
No. Only your own visual confirmation is recorded.