QD-OLED Quantum Dot OLED

Architecture

QD-OLED panels stack a blue OLED emission layer beneath two color-conversion films: a red-emitting quantum-dot layer over the red sub-pixel, a green-emitting quantum-dot layer over the green sub-pixel, and an unfiltered passthrough for the blue sub-pixel. Quantum dots convert incident blue photons to red or green with quantum yields above 90 percent, with the emission wavelength governed by dot size (smaller dots emit toward red; the manufacturing tolerance for size determines the spectral purity). The blue OLED is a multi-stack design: early Gen 1 panels used a two-stack blue; the 2026 Samsung S95H "Penta Tandem" panels stack five blue layers with redundancy, which Samsung says doubles panel lifespan vs the prior four-stack architecture.

Difference from WOLED

WOLED uses a white-light OLED stack passed through red, green, and blue color filters, plus an unfiltered white sub-pixel that boosts overall brightness at the cost of color purity in highlights. Filters are subtractive: they discard photons outside the target band, which limits color volume at high luminance because the filter transmission is a fixed percentage. Quantum-dot conversion is additive: incident blue photons are converted to the target wavelength with high efficiency, so increasing luminance scales the in-gamut color volume rather than diluting it. Independent measurements of Samsung S95-generation QD-OLED panels show meaningfully wider color volume at peak luminance than comparable WOLED panels of the same generation; the gap is most visible on highly-saturated specular highlights in HDR.

Manufacturer scope, common point of confusion

Samsung Display is the only manufacturer producing QD-OLED panels. LG Display does not make QD-OLED, despite both companies producing OLED TVs that look similar in marketing photography. The confusion is reinforced by Samsung's TV division also selling WOLED-based models (Samsung's "Glare Free" branding spans both QD-OLED and WOLED variants), and by LG's marketing using "QD" in some Mini LED product names ("QNED", Quantum Nano-Emitting Diode, refers to a Mini LED LCD with a quantum-dot color-purity film, unrelated to QD-OLED). Sony sources QD-OLED panels from Samsung Display for the A95L (2023 carryover, sold through 2024) and the Bravia 8 II (2025, also sold in 2026), and WOLED panels from LG Display for the Bravia 8 (2024).

Generations and measured 10% HDR brightness

The progression below uses 10% HDR window peak brightness as measured by independent reviewers (Tom's Guide, FlatpanelsHD, AVForums, TechRadar). Samsung's marketing claims at the panel level run higher.

• S95B (2022, Gen 1 QD-OLED): ~1,010–1,050 nits (Tom's Guide, Trusted Reviews)
• S95C (2023, Gen 2): ~1,369–1,400 nits (Tom's Guide, Trusted Reviews) — ~30% gain via heatsink redesign and higher sustained current
• S95D (2024, Gen 3 with Glare Free coating): ~1,600–1,800 nits (Tom's Guide ~1,777, FlatpanelsHD ~1,600, TechRadar ~1,868)
• S95F (2025, Gen 3 refinement): ~2,000–2,400 nits (FlatpanelsHD ~2,000–2,200, HomeTechnologyReview ~2,388)
• S95H (2026, Gen 4 Penta Tandem with five-stack blue): Samsung claims ~3,000 nits panel-level; measured ~2,553–2,700 nits in 10% window in early reviews

For comparison, LG's 2026 G6 with Primary RGB Tandem WOLED measures approximately 2,316–2,471 nits in 10% window in Filmmaker mode (AVForums, TechRadar) — close to S95H measured. LG Display's panel-level claim for Tandem is higher (around 4,500 nits), but the TV's measured output in the standard reference picture mode sits below that ceiling.

Lifespan and burn-in

Early Gen 1 QD-OLED panels raised lifespan concerns because the blue OLED stack carried the full energy load that was distributed across white and color in WOLED. The first long-term tests (RTINGS accelerated burn-in study) showed faster blue degradation than contemporary WOLED. Gen 4 (2026 Penta Tandem) panels use five-stack blue with redundancy; Samsung claims the architecture doubles panel lifespan vs the prior generation. Long-term (5+ year) field data on Gen 4 is not yet available.

2026 product mapping

QD-OLED in 2026 ships in the Samsung S95H flagship (Penta Tandem on 55", 65", 77" sizes — the 83" model uses LG Display W-OLED instead because Samsung Display does not currently produce QD-OLED above 77"). The Samsung S90H mid-tier carries QD-OLED on its 55", 65", and 77" sizes; the 42", 48", and 83" sizes ship with LG Display Tandem W-OLED instead. The S95F (2025) remains in channel at a lower price. Sony's QD-OLED flagship is the Bravia 8 II, also sold through 2026; Sony has not announced a 2026 OLED refresh as of April 2026 (initial 2026 announcements covered Bravia 3 II and Bravia 2 II LCDs only).

Common confusions

QD-OLED is not the same as Mini LED with quantum dots, which is an LCD technology where a Mini LED backlight illuminates an LCD layer with a quantum-dot color-purity film. QD-OLED is self-emissive (each sub-pixel produces its own light); Mini LED LCD has a separate backlight and shutter layer. The acronym overlap is intentional on Samsung's marketing side and persistent in third-party coverage. QD-OLED is also not the same as "QLED" — Samsung's QLED brand is Mini LED LCD with quantum dots, no OLED layer involved.