Screen Issues
Ferramenta gratuita

Ferramenta de teste de tela

Teste seu celular ou monitor em busca de pixels mortos, manchas claras e sangramento de luz de fundo – ciclo automático de 6 cores.

Use esta ferramenta para detectar manchas claras, pixels mortos e burn-in de tela.

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This article is about white spots on LCD displays. For bright spots specifically, see LCD Bright Spots — the terms are used interchangeably.

White spots on LCD screens appear as bright areas that remain visible on light or dark backgrounds. You can use the screen test tool below to check your display and identify white spots more clearly.

What Causes White Spots on LCD Screens

White spots on LCD displays are typically caused by:

  • Pressure damage — Physical pressure on the screen damages the liquid crystal layer
  • Backlight issues — Problems with the backlight panel causing uneven light distribution
  • Manufacturing defects — Imperfections that become visible as the backlight ages

How to Fix White Spots

  1. Restart your device — Rule out software causes
  2. Check for external pressure sources — Remove keyboard covers, ensure nothing presses against the screen
  3. Use the screen test tool above to display solid colors and detect white spots
  4. Seek professional repair for persistent backlight issues

When to Replace Your LCD Screen

Consider replacement when:

  • Repair costs approach 50% of device value
  • Multiple white spots are present
  • Other display problems exist (dead pixels, yellowing)

Procurando soluções relacionadas?

Manchas brancas em monitores LCD são distintas de manchas brilhantes — manchas brancas são causadas por pressão sobre o painel de visualização em si, enquanto manchas LCD brilhantes resultam de pressão da retroiluminação atrás do painel. Manchas brancas em móveis são mais comumente causadas por impacto físico externo do que por problemas internos do painel.