How to Test Your Screen: A Comprehensive Guide and Practical Tips
In today's digital age, screen quality directly affects user experience. Whether you are buying a new device or testing an existing screen, it is crucial to know how to test the quality of your screen. This article will provide you with structured data and practical steps to help you quickly evaluate screen performance.
1. Core indicators of screen testing
| test items | Detection method | Qualification standards |
|---|---|---|
| Dead pixel detection | Solid color background observation | No bright/dark spots |
| Color accuracy | Professional color card comparison | Delta E ≤ 3 |
| Brightness uniformity | Grayscale gradient test | Difference ≤ 15% |
| response time | High-speed motion picture | ≤5ms(GTG) |
| Viewing angle | Observation from multiple angles | ≥178° |
2. Detailed test steps
1. Dead pixel detection:Display red, green, blue, white, and black solid color backgrounds in sequence, and use a magnifying glass to observe whether there are fixed bright spots or dark spots that do not change with the color. According to international standards, less than 3 dead pixels are within the normal range.
2. Color test:Use professional testing software (such as DisplayCAL) or online tools (such as Lagom LCD test page) to focus on checking:
| Color gamut coverage | sRGB standard | DCI-P3 standard |
|---|---|---|
| Normal screen | ≥95% | ≥70% |
| Professional screen | ≥99% | ≥95% |
3. Response time test:Play high-speed scrolling text or UFO test animation and observe whether there is obvious smear. It is recommended to additionally test the refresh rate of game screens (144Hz/240Hz devices require special tools to verify).
3. Solutions to common problems
| Problem phenomenon | Possible reasons | Solution |
|---|---|---|
| Partial yellowing | Backlight aging | Replace the backlight module |
| flashing stripes | signal interference | Check the connection cable |
| Touch failure | static electricity accumulation | Restart device |
4. Recommendation of professional tools
1.Hardware tools:Colorimeter (such as X-Rite i1Display), light gun photometer
2.Software tools:DisplayTest (Android), Dead Pixel Test (Windows), EIZO Monitor Test (Online)
5. Purchase suggestions
Select screen based on test data:
• Designers give priority to color accuracy (Delta E<2) and color gamut (>100% sRGB)
• E-sports players focus on response time (≤1ms) and refresh rate (≥144Hz)
• Ordinary users should pay attention to the number of dead pixels and brightness uniformity
Through the above systematic tests, you can fully understand the screen quality. It is recommended to test the new phone as soon as you get it. If any problems are found within 7 days, you can promptly return or replace it. Regular testing can also help extend the life of your screen.
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