Video & Display
Primary RGB Tandem OLED LG Display Primary RGB Tandem (Tandem WOLED) panel
Also known as: Primary RGB Tandem 2.0, Tandem WOLED 2.0, LG Display 4-stack OLED, RGB Tandem OLED panel
Primary RGB Tandem is LG Display's TV OLED panel architecture that stacks separate red, green and blue emission layers (the 2025 version uses red, green and two blue) in place of the older yellow-plus-two-blue stack. The 2026 generation, Primary RGB Tandem 2.0, is rated by LG Display at up to 4,500 nits and 99.5% DCI-P3, up from a 4,000-nit rating in 2025. Reviewers measure far less: 2,213 nits on the 2025 LG G5 and just over 3,400 nits on a 2% window for the 2026 G6.
What Primary RGB Tandem is
Primary RGB Tandem is the name LG Display gives its current white-OLED TV panel. DisplayDaily describes the 2025 version, first used in the LG G5, as separate red, green and two blue emission layers, replacing the earlier arrangement of one yellow and two blue layers. The 2026 revision, Primary RGB Tandem 2.0, is described by oled-info as red, green and blue emitters "stacked in independent layers," with a refined pixel structure and new algorithms to improve light efficiency. LG Display is shortening the whole family to "Tandem WOLED" in its own marketing, per TFTCentral.
DisplayDaily adds that LG's earlier META/MLA micro-lens approach, used in CES 2023 and 2024 designs, was dropped for the G-series in 2025. The stack puts separate red, green and blue emission layers on top of one another, which spreads drive current across several emitters instead of one. This entry is also the lookup for the shipping panel generations: which numbers LG Display claims, what reviewers measured, and which TV sizes get which panel. For the generic stacked-emitter concept see Tandem WOLED.
Claimed numbers vs measured numbers
LG Display's product page lists a maximum of 4,500 nits, which it calls "the world's first 4,500 nits," plus 99.5% DCI-P3 coverage, 33 million self-lit pixels, a 0.3% reflectance coating, a 3,840 x 2,160 grid, 165 Hz and 10-bit color. The specs are based on a 65-inch sample, and the line runs 48, 55, 65, 77 and 83 inches. The previous generation was rated at 4,000 nits, so the 2026 claim is a 12.5% step. TFTCentral called both the 4,500-nit WOLED and QD-OLED claims "incremental improvements over last years 4000 nits peak spec."
Measurements land lower, and the gap depends on the test window. FlatpanelsHD measured 2,213 nits peak on the 2025 G5, which is 55% of the 4,000-nit rating, against 1,650 nits on the older LG G4. That is a 34% gain across one generation. For the 2026 G6, Expert Reviews measured just over 3,400 cd/m² on a 2% window with a Calman Ultimate setup, against 3,050 cd/m² on a 5% window for the G5, plus 500 cd/m² full-field against 400 on the G5. The G6 reached 76% of 4,500 nits on that small window, though LG has not said what window its rating uses. Gamut measured above 99% DCI-P3 and 82.4% BT.2020. The full-field gain from 400 to 500 cd/m² is 25%, and the headline window gain depends on which window you compare, since 3,400 on 2% and 3,050 on 5% are not like-for-like.
Primary RGB Tandem vs older WOLED and QD-OLED
Against the old yellow-plus-blue stack, oled-info reports that the 2.0 panel's refined pixel structure and algorithms are aimed at light efficiency, and I found no teardown or published stack diagram beyond the layer descriptions above. The reflectance figure of 0.3% comes from LG Display's "Reflection Free Premium" coating and is a separate improvement. Against QD-OLED, Samsung Display announced a 4,500-nit panel at the same CES and says QD-OLED "demonstrates the potential for more vivid colour reproduction" at similar peak brightness. Both claims are manufacturer ratings. For measured side-by-sides, read QD-OLED vs WOLED.
The gap between 3,400 cd/m² on a 2% window and 500 cd/m² full-field is the automatic brightness limiter at work, so the full-field number matters more for bright daytime scenes than the headline.
Which TVs get the 2.0 panel
TFTCentral's pre-release report says the 55, 65, 77 and 83-inch LG G6 models use Primary RGB Tandem 2.0, that the 48-inch G6 reportedly does not, and that only the 77-inch and 83-inch C6 (model C6H) get it, while the 48, 55 and 65-inch C6 do not. LG's Hyper Radiant Color branding covers the 2.0 panel, Brightness Booster Ultra and the α11 Gen 3 processor on the G6 55 to 83-inch. DisplayDaily reports LG's claim that Brightness Booster Ultra adds 20% brightness over the G5. Sources disagree on edge cases: Expert Reviews says all G6 sizes except the 97-inch use the new panel, while also describing the 55 and 65-inch as "step-down" Evo panels. Check the spec sheet for your size.
TFTCentral also did arithmetic from LG's own multiples over the B6. Using LG's comparison, it estimated about 2,400 nits for the 48-inch G6 and about 3,700 nits for the 77 and 83-inch C6H, and it lists 1,500 nits for the 42-inch C6. Those are the author's estimates, not LG ratings. LG's G6 and C6 share the Reflection Free Premium coating, which LG Display says has the lowest reflectance among consumer TVs at 0.3%, and the G6 55 to 83-inch uses Brightness Booster Ultra where the C6H uses Brightness Booster Pro.
UK pricing on the G6 from Expert Reviews: 48 inch £1,599, 55 inch £2,199, 65 inch £2,999, 77 inch £3,899, 83 inch £5,499 and 97 inch £15,999. For the trade-offs against the competition, see G6 vs S95H vs BRAVIA 9 II.
Common confusions
"RGB" in the name does not mean an RGB-stripe subpixel layout. TFTCentral reports a 27-inch 4K LG Display monitor panel with an RGB-stripe layout, and DisplayDaily calls it a first for LG's WOLED technology. The sources do not say the TV panels share that layout. The 4,500-nit figure is a peak panel rating, and the 1,500-nit figure LG Display gives for its 2026 gaming monitors shows how much the number varies by product. Judge the TV by the G6-class measurements, roughly 2,200 to 3,400 nits depending on window size.
Sources
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- [2]LG Display Tandem WOLED 2.0 / Primary RGB Tandem coverage (G5 measured 2,213 nits)DisplayDaily, 2026Secondary
- [3]
- [4]
- [5]LG Bring Primary RGB Tandem 2.0 WOLED Panels to Some of their G6 and C6 TV RangeTFTCentral, 2026Secondary
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