Apple is advancing its plan to transition the iMac all-in-one desktop line from Liquid Crystal Display (LCD) to Organic Light-Emitting Diode (OLED) panels, with industry projections indicating a market debut between 2029 and 2030. This extended timeline is attributed to the substantial manufacturing complexity involved and the pursuit of visual specifications that surpass current commercial OLED offerings.
The initial phase of this development required Apple to issue formal requests to its primary display partners, Samsung Display and LG Display, for samples of 24-inch OLED panels. The targeted specifications aim for a peak brightness of 600 nits, an increase over the 500 nits produced by the existing 24-inch LCD iMac, while maintaining a pixel density near 218 PPI, consistent with the current 4.5K resolution. Sample deliveries from the suppliers are anticipated in the second half of 2026, with LG Display's submissions potentially arriving later in 2027, reflecting the technical challenges in scaling this display technology for a large desktop format.
This significant display overhaul for the iMac is expected to follow the integration of OLED technology into Apple's MacBook lineup, with a redesigned OLED MacBook Pro rumored for introduction in late 2026. Samsung Display is positioned to respond first, utilizing its Quantum Dot OLED (QD-OLED) infrastructure, which is reportedly being upgraded to meet Apple's density requirements, possibly reaching 220 PPI. Samsung has branded its advanced process as QD-OLED Penta Tandem, which employs a five-layer organic material light-emitting structure, enhancing luminous efficiency by 1.3 times and doubling the lifespan compared to prior four-layer designs.
In contrast, LG Display is developing its samples using White OLED (W-OLED) architecture, which has historically lagged behind QD-OLED in brightness performance. To address this, LG Display is engineering a novel five-stack W-OLED structure, incorporating an additional green layer to boost luminance, though this technology remains in development and has not yet entered mass production. LG Display is also examining alternative methods, such as eLEAP, which eliminates the need for fine metal masks in the manufacturing process.
The broader context shows a marked industry shift toward OLED in mid-size IT devices, with OLED monitor shipments increasing 92 percent in 2025 to total 2.7 million units, according to TrendForce data. The extended development cycle for the iMac underscores the technical difficulties in applying high-resolution OLED to larger screens, a complexity that supports the projected 2029 to 2030 launch window. The current 24-inch iMac, last updated in October 2024 with the M4 chip, is expected to receive an interim refresh featuring the M5 chip before the OLED transition.
