Mini-LED & Local Dimming Lab
Inspect how your display's Full-Array Local Dimming (FALD) backlight behaves. Evaluate blooming halos around bright cursors and subtitles, starfield contrast clipping, and zone transition latency.
Web browsers cannot reliably determine the physical number of backlight zones, zone layout (e.g. 576, 1152, or 2304 zones), or internal firmware dimming algorithms. ScreenCheck provides visual stress patterns so you can observe halo behavior with your own eyes without fabricated zone metrics.
A comprehensive sequence evaluating Local Dimming, Blooming Halos, Starfield Contrast, Subtitle Blooming, and Mixed Contrast.
Individual Local Dimming Tests
Pure dark backgrounds with controlled static and animated highlights to inspect backlight zone activation.
Move bright objects freely via mouse, touch, or arrows to observe visible light halos and zone bleeding.
Dense pinpoint starfield on pitch black to evaluate contrast clipping and aggressive dimming algorithms.
Specular highlight traveling across black at controlled speeds to inspect zone response lag and trailing tails.
High-contrast sweeping patterns designed to make backlight zone switching boundaries visually apparent.
Simulate high-luminance dialogue text over deep black letterbox bars to inspect real-world movie haloing.
Simultaneous small stars, large white blocks, and near-black fields to test display contrast balance.