Glossary → Screen & Display Terms
What Is OLED?
The display technology used in all flagship iPhones from X onwards and premium Android phones.
Definition: OLED (Organic Light-Emitting Diode) is a display technology where each individual pixel produces its own light. Unlike LCD screens which require a separate backlight, an OLED pixel switches completely off when showing black — producing true blacks and infinite contrast.
Why it matters for your repair
When a technician quotes significantly more for an iPhone 13 screen vs an iPhone 8, OLED is the reason. Every iPhone from X (2017) onwards uses OLED. Samsung Galaxy S and Z series, Google Pixel 4 onwards, and OnePlus flagships all use OLED. The panel itself costs more to manufacture — replacement panels are typically 2–3x the cost of equivalent LCD repairs. Quality matters too: low-grade OLED replacements show colour shifting, yellow tinting, and reduced brightness within weeks.
OLED vs LCD at a glance
Blacks: OLED produces true black (pixel off). LCD produces dark grey (backlight always on).
Thickness: OLED screens are thinner — no backlight layer needed.
Battery: Dark mode on OLED saves real battery — black pixels consume zero power.
Weakness: OLED is susceptible to burn-in from static content. LCD is not.
Related terms
→ LCD — older display tech OLED replaced in flagships
→ AMOLED — Samsung’s Active Matrix variant of OLED
→ Screen Burn-In — OLED’s main long-term weakness
→ Digitiser — touch layer that sits above the OLED panel
→ Dead Pixel — individual OLED pixel failure
→ True Tone — Apple’s colour calibration feature on OLED iPhones
OLED screen cracked or damaged?
PhoneDoctor repairs OLED screens for iPhone, Samsung, and all major brands. OEM-grade panels, same-day service, 90-day warranty.