데드 픽셀 테스트 & 스턱 픽셀 복구 도구
데드/스턱 픽셀, 백라이트 번짐, 균일도를 확인하고 개선하는 전문 도구.
스턱 픽셀 복구 도구 사용법
- 찾기: “화면 테스트 시작” 버튼으로 화면에서 스턱 픽셀(밝은 점)을 찾습니다.
- 드래그: 복구 도구를 실행하고 깜박이는 박스를 스턱 픽셀 위로 드래그합니다.
- 대기: 10~20분 동안 실행합니다. 빠른 색상 변화가 픽셀을 풀어줄 수 있습니다. (모바일 사용자는 전체 화면 모드를 사용하세요)
정밀 색상 테스트
전체 화면 색상을 순환하며 데드/스턱 픽셀을 찾습니다.
그레이스케일 & 균일도
백라이트 번짐, IPS 글로우, 밴딩을 확인합니다.
픽셀 복구 모드
애니메이션 패턴으로 스턱 픽셀 복구를 시도합니다.
안전하고 간단
다운로드 없이 데스크톱과 모바일에서 동작합니다.
What is a Dead Pixel Test?
A dead pixel test displays solid colors across your screen to identify defective pixels on monitors, laptops, TVs, and mobile devices. By cycling through white, black, red, green, and blue, you can spot dead pixels (permanently black), stuck pixels (fixed color), or backlight bleed. This browser-based test requires no installation—just open the page and start testing instantly on any device.
How This Online Screen Test Works
Our screen test uses your browser's fullscreen API to display solid colors across your entire monitor. When you click 'Start Screen Test', the tool cycles through pure colors (white, black, red, green, blue, cyan, magenta, yellow) one by one. Each color is rendered at maximum saturation to make pixel defects visible. You examine the display on each color—dead pixels appear as black spots, stuck pixels show as fixed color dots. All processing happens in your browser with no data collection.
Accuracy and Limitations
This browser-based test accurately reveals most visible pixel defects when viewed in a dark room at maximum brightness. However, there are limitations: Very small sub-pixel defects may be hard to see without magnification. Backlight bleed is easier to spot on dark backgrounds. Color accuracy depends on your monitor's calibration. For warranty claims, manufacturers may require specific testing conditions or their own diagnostic tools.
How to Interpret Your Results
Dead Pixels
Dead pixels appear as permanently black dots that don't change color regardless of the displayed image. They are usually permanent hardware defects. Multiple dead pixels may qualify for warranty replacement.
Stuck Pixels
Stuck pixels remain fixed on one color (red, green, or blue) and don't respond to image changes. Unlike dead pixels, stuck pixels can sometimes be fixed using our Stuck Pixel Fixer tool.
Backlight Bleed
Light bleeding from screen edges visible on dark colors indicates backlight bleed. Minor bleed is common on LCD/LED monitors. Severe bleed that affects normal viewing may warrant replacement.
데드 픽셀 테스트 FAQ
화면 테스트와 픽셀 결함에 대한 자주 묻는 질문.
Related Hardware Tests
Explore other tools to complete your hardware diagnostics.
About This Test
Methodology: Our testing methodology uses standard Web APIs (Fullscreen API, Canvas) that are supported by all modern browsers. Tests are designed for accuracy and repeatability.
About: HardwareTest provides free, privacy-first hardware diagnostics. All tests run entirely in your browser with no data collection.
Disclaimer: This tool provides visual pixel inspection only. Results may vary based on viewing angle, brightness settings, and ambient lighting. For warranty claims, consult your monitor manufacturer's testing requirements.