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체커보드 테스트 도구

체커보드 패턴으로 모니터의 선명도, 픽셀 응답성, 서브픽셀 레이아웃을 테스트. 무료.

체커보드 테스트
체커보드 패턴으로 모니터의 선명도, 픽셀 응답성, 서브픽셀 레이아웃을 테스트. 무료.
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Tests sub-pixel rendering at 2px grid
Reveals dead or stuck pixels instantly
Click anywhere to exit fullscreen

체커보드 테스트는 모니터의 픽셀 선명도와 응답성을 평가하는 도구입니다. 흑백 교대 패턴을 표시하여 각 픽셀의 경계가 선명하게 표시되는지 확인합니다.

이 테스트는 모니터의 네이티브 해상도 동작 확인에 특히 유효합니다. 스케일링이 부적절하거나 케이블 품질에 문제가 있으면, 체커보드 패턴에 흐릿함이나 모아레가 보입니다.

Why Should You Run This Test?

A checkerboard pattern is the most demanding test for pixel-level sharpness. Every single pixel must be distinctly black or white — if your display is running at a non-native resolution, using poor scaling, or has a faulty display cable, the checkerboard will immediately look blurry, moiré-patterned, or gray instead of crisp.

Common Symptoms This Test Catches

  • Text looks fuzzy or slightly out of focus
  • Fine details in images appear soft or smeared
  • Screen looks sharp in the center but blurry at edges
  • Certain areas of the screen have a colored tint that shouldn't be there

What Causes a Blurry or Distorted Checkerboard?

Resolution & Scaling Issues

  • Non-native resolution — If your OS is set to a resolution that doesn't match your monitor's native resolution, pixels are interpolated and the checkerboard will look soft or gray.
  • Display scaling above 100% — Windows/macOS scaling (125%, 150%) can blur pixel-level patterns. This is expected behavior but indicates your apps may not be pixel-perfect.

Cable & Connection Issues

  • VGA/analog cable — Analog signals introduce noise and blur. Use digital connections (DisplayPort, HDMI, USB-C).
  • Damaged or low-quality cable — A faulty cable can cause sparkle, blur, or intermittent pixel issues.

Hardware Defects

  • Dead or stuck pixels — Individual pixels that don't respond will stand out dramatically against the alternating pattern.
  • Sub-pixel rendering issues — If sub-pixels are misaligned, you'll see colored fringes on the black/white edges.

How to Read Your Results

✅ Crisp, distinct black and white pixels — Your display is running at its native resolution with a good digital connection. Pixel-level rendering is working correctly.

⚠️ Pattern appears slightly gray or has moiré effects — Your display is likely running at a non-native resolution or is using display scaling. Check your OS display settings and ensure the resolution matches your monitor's native spec.

❌ Blurry, soft, or has colored artifacts — There may be a cable issue (try a different cable), your resolution is wrong, or there is a hardware defect. Check: 1) Display resolution, 2) Cable type/quality, 3) GPU output settings.

How to Fix Checkerboard Issues

  • Set native resolution — Right-click desktop → Display Settings → Resolution. Choose the resolution marked "Recommended" — this is your panel's native resolution.
  • Switch to digital cable — Replace VGA with DisplayPort, HDMI, or USB-C. Digital connections are pixel-perfect.
  • Set scaling to 100% — For pixel-perfect testing, temporarily set display scaling to 100% (Settings → Display → Scale).
  • Check for overscan — Some TVs/monitors crop or scale the image. Disable overscan in your TV settings or GPU driver.
  • Try a different cable — If the pattern has sparkle or intermittent artifacts, the cable may be faulty.
  • Update GPU drivers — Outdated drivers can cause rendering issues at the pixel level.

reference_results

✅ Good Result — Crisp Checkerboard

When viewed close-up, you should see perfectly alternating black and white squares at the pixel level. From normal viewing distance, the pattern should appear as a uniform medium gray — this means every pixel is rendering correctly and your resolution is native.

⚠️ Mediocre Result — Moiré Pattern

Instead of uniform gray, you see wavy, shimmering patterns or uneven brightness areas. This is called moiré and typically indicates your display is running at a non-native resolution, causing pixel interpolation.

❌ Bad Result — Blurry or Tinted

The pattern looks soft, smeared, or has colored fringes (pink, green, or blue edges). This indicates a cable issue (analog VGA signal), incorrect resolution, or sub-pixel rendering problems.

자주 묻는 질문 – 체커보드 테스트

픽셀의 선명도, 응답성, 서브픽셀 레이아웃의 품질을 확인할 수 있습니다. 흐릿함이나 모아레 패턴은 문제를 나타냅니다.

모니터가 네이티브 해상도로 표시되지 않거나, 케이블 품질 문제, 또는 이미지 처리(선명도 필터)가 원인일 수 있습니다.

디스플레이 해상도와 패턴 주파수의 간섭으로 발생합니다. 네이티브 해상도 표시를 확인하세요.

네. TV의 선명도 설정이나 오버스캔 설정을 조정할 때 체커보드 패턴이 참고가 됩니다.

이 도구는 표준 1픽셀 체커보드를 표시하여 최고 정밀도의 선명도 테스트를 제공합니다.

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무료 전체 화면 색상 도구

Quick Screen Health Check

How did your screen perform?

How did the checkerboard pattern appear?