Samsung Weighs GlobalFoundries for Galaxy Display Chips as Mature-Node Capacity Runs Full
Samsung is evaluating GlobalFoundries as a second display driver IC supplier after UMC's 22nm capacity hit its limit, while constrained 12-inch mature nodes see 5-10% price increases.
Samsung Electronics is considering adding GlobalFoundries as a second foundry partner for the display driver ICs used in its OLED Galaxy smartphones, a move that would end UMC's exclusive role in manufacturing the chips, TrendForce reported on October 16 citing ZDNet. GlobalFoundries-produced DDIs could appear in Galaxy handsets as early as late 2027, with lower and mid-range Galaxy A series models likely to be first. Samsung is evaluating GlobalFoundries' 22nm or 28nm nodes, which have compatible capacity in Singapore and Germany.
The trigger was a capacity failure. Samsung asked UMC for expedited DDI production for the Galaxy Z Fold8 after demand for the foldable exceeded expectations following its July launch, but UMC's 22nm DDI capacity was already full and accommodating the request would have meant rescheduling other customers. Samsung instead cut planned Galaxy Z Fold8 component production for September by 10% and shifted the deferred volume into October. Mature-node demand has outrun supply since the second half of 2025, and institutional investors quoted by Economic Daily News expect UMC's 12-inch utilisation to reach 93% by the end of 2026 on 22/28nm DDI orders from Samsung System LSI and Novatek plus 55/65nm Apple Mac-related chips.
That tightness is now turning into price. TrendForce notes that some capacity-constrained 12-inch mature nodes saw 5-10% price increases between the second and third quarters of 2026, with broader increases expected in 2027. The cause is allocation rather than demand alone: foundries are shifting capacity toward higher-margin AI-related products such as power management ICs, power devices, interposers and optical communication components, and cutting back on lower-margin display driver ICs and CMOS image sensors. For handset and display customers, that means competing for a shrinking slice of legacy capacity at rising prices.
At the advanced end the constraint is packaging rather than wafers. TSMC chief executive C.C. Wei used the company's latest investor messaging to highlight its ability to mass-produce 5x reticle-size packaging with strong yields, a capability he said rivals have yet to match, while describing the company's intention to leave no demand unserved even as its own CoWoS capacity remains tight. The two ends of the market now point the same way: leading-edge capacity is rationed by packaging throughput while mature nodes are rationed by allocation, and both are feeding into 2027 pricing.