QLED vs. TN
Comparing 2 standards across 12 specifications. 12 key differences identified.
QLED, despite its OLED-like name, is not a self-emissive technology -- it's a conventional LED-backlit LCD panel with a quantum-dot film added between the backlight and the LCD layer to produce more precise color. Samsung introduced it in 2017; it still requires a backlight and has the same blooming limitations as other backlit LCDs.
TN (Twisted Nematic) is the fastest and cheapest common LCD panel type, with response times as low as 1ms -- traded off against narrow, asymmetric viewing angles and noticeable color shift when viewed from above or below.
Specification Comparison Table
12 Parameters| Parameter / Spec | ||
|---|---|---|
|
Underlying Technology
|
LED-backlit LCD (typically VA) + quantum-dot color-conversion film | — |
|
Self-Emissive
|
No -- requires a backlight, same as any other LCD | — |
|
Introduced
|
CES 2017 (Samsung) | — |
|
Not To Be Confused With
|
OLED (self-emissive, no backlight) | — |
|
Contrast Ratio
|
— | 1,000 : 1 (Static) |
|
Viewing Angle
|
— | 170° Horizontal / 160° Vertical (Severe vertical shift) |
|
Response Time (GtG)
|
— | 0.5–1 ms (Ultra-fast) |
|
Color Gamut Coverage
|
— | 90–95% sRGB / 70–75% DCI-P3 |
|
Peak Brightness
|
— | 300–400 nits |
|
Burn-in Risk
|
— | None (Immune) |
|
Backlight / Emissive Type
|
— | Transmissive Edge LED |
|
Black Level / Minimum Luminance
|
— | Moderate (0.2–0.4 nits) |