PHONEDOCTOR GLOSSARY
Screen & Display Repair Terms
8 terms your technician might use — explained in plain English.
DISPLAY TECHNOLOGY
OLED
Each pixel produces its own light — no backlight needed. Used in all iPhones from X onwards and Samsung Galaxy S flagships. More expensive to replace than LCD.
Read definition →DISPLAY TECHNOLOGY
LCD
Uses a backlight and liquid crystals. Found in iPhones up to iPhone 11, most mid-range Android phones, and all iPads except Pro. Generally cheaper to replace than OLED.
Read definition →DISPLAY TECHNOLOGY
AMOLED
Samsung’s Active Matrix OLED. Used in Galaxy S, A52+, and Z series. Produces richer colours than standard OLED and is expensive to replace. Budget screens typically show colour shifting.
Read definition →TOUCH LAYER
Digitiser
The invisible layer that detects your touch. If your screen displays fine but won’t respond to touch, the digitiser is the fault — not the display panel itself.
Read definition →SCREEN FAULT
Dead Pixel
A pixel stuck permanently black or white. One isolated dead pixel may be cosmetic — a spreading cluster means the panel is failing and needs replacing.
Read definition →SCREEN FAULT
Ghost Touch
Your phone registers taps you didn’t make. Apps open by themselves, text types on its own. Caused by a damaged digitiser or Touch IC fault on the logic board.
Read definition →SCREEN FAULT
Screen Burn-In
A permanent ghost image on OLED/AMOLED displays from prolonged static content. Irreversible — only a full screen replacement fixes it. Common on phones with always-on displays.
Read definition →INTERNAL COMPONENT
Flex Cable
The ribbon cable connecting your screen to the logic board. A damaged flex cable causes flickering, lines on screen, or total display failure — often cheaper to replace than the full panel.
Read definition →Cracked or faulty screen?
PhoneDoctor repairs all phone screens — OLED, AMOLED, and LCD. Same-day service, 90-day warranty.