ドット落おち

noun

pixel defect; dead pixel; stuck pixel

Technical term for a defective pixel on an LCD or similar display; often used in the context of quality checks for monitors, TVs, and smartphone screens. Compare with ドット抜け, which is sometimes used interchangeably.

See also: ドット抜け

• 新しん品ぴんのモニターにドット落おちが見みつかったので、交こう換かんしてもらった。

  I found a pixel defect on the new monitor, so I had it replaced.

• ドット落おちが一ひとつあるだけで、画が面めん全ぜん体たいの印いん象しょうが悪わるくなる。

  Even a single dead pixel can ruin the impression of the whole screen.