SCREEN CARE · KNOWLEDGE BASE
Understand screen problems before deciding what to do
Use practical checks to identify common display issues. Browser tests help with initial observation and cross-checking, but do not replace repair diagnostics, manufacturer tests or warranty decisions.
Common questions
Start with the answer, then follow the checks
Is that tiny black or bright dot a dead pixel?
Use solid colors, rule out dirt and know when to contact support.
Are bright edges on a black screen backlight bleed?
Tell LCD bleed, IPS glow and camera overexposure apart.
Why does the measured refresh rate differ from the spec?
Understand adaptive refresh, browser limits and sampling error.
What causes broken, jumping or unresponsive touch input?
Check cleaning, accessories, software and hardware in order.
Can OLED burn-in be prevented or repaired?
Reduce uneven wear caused by bright, static content.
Is low-brightness flicker causing eye strain?
Separate dimming sensitivity, auto-brightness changes and faults.
Why does the screen look yellow, red or blue?
Disable eye-care filters before checking color temperature and patches.
Are ghosting and image retention normal?
Distinguish motion blur, temporary retention and burn-in risk.
Is it a scratch, pressure mark or bad pixel?
Combine angled-light inspection with solid-color pixel checks.
Are cloudy patches on gray screens a serious problem?
Understand LCD uniformity and judge it in normal viewing.
Display buying guides
Move from spec sheets to real use
Complete display buying guide
Balance size, resolution, brightness, color and refresh rate.
OLED vs LCD: which should you choose?
Compare contrast, flicker, lifespan and viewing environment.
Is a high refresh rate worth it?
Benefits, requirements and often-overlooked tradeoffs.
Used-device screen inspection checklist
Cover appearance, display, touch and repair risks quickly.
New phone screen unboxing check
Check appearance, solid colors and touch during the return window.
How to choose an office monitor
Prioritize size, resolution, ergonomics, ports and comfort.
Flicker and eye-comfort buying guide
Understand PWM, DC dimming, eye-care modes and practical tests.
Resolution and screen clarity explained
See how PPI, scaling and viewing distance shape sharpness.