Samsung is reportedly moving toward selective dual-sourcing of display-driver integrated circuits (DDIs), rather than abandoning its in-house Samsung System LSI business. TrendForce’s August 2026 account says Samsung Display sought quotations from Taiwan’s Novatek and other suppliers for the 2028 Galaxy S28 Ultra, while Samsung Electronics’ Mobile eXperience (MX) division will make the final supplier decision.
The same reporting says System LSI retained exclusive supply for some Galaxy S27 Ultra and S27 Pro variants, with additional suppliers still being evaluated for standard and Plus models. These are reported sourcing plans, not Samsung-confirmed production awards.
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What Samsung is changing
The reported change is a broader qualification effort across several product tiers. For flagship phones, Samsung appears to be testing whether outside DDI suppliers can supplement System LSI when capacity, cost or scheduling makes a second source useful. A separate report says Samsung is also considering GlobalFoundries alongside UMC for DDI production that could reach entry-level Galaxy A-series phones by the end of 2027. That account comes through secondary reporting citing ZDNet Korea and is less certain than the TrendForce report.
Samsung Display is widening its supplier base outside smartphones as well. Seoul Economic Daily reported an agreement with LX Semicon to supply OLED DDIs for information-technology panels such as laptop and monitor displays, with mass production scheduled to begin in March 2026. The reported order volume is hundreds of thousands of units.
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Why Samsung wants more DDI sources
Capacity resilience
DDIs depend on foundry capacity, and an allocation shortage at one manufacturer can delay a phone or panel program even when the display design itself is ready. The GlobalFoundries/UMC report specifically attributes Samsung’s search for another source to capacity constraints. Qualifying a second supplier gives Samsung more allocation flexibility when one foundry is full or production priorities change.
Cost and margin pressure
TrendForce linked the Galaxy sourcing review to rising component costs, including memory costs affecting Samsung’s MX division. Omdia reported that display-driver IC prices were also rising as foundry capacity and upstream manufacturing costs tightened, citing 5% to 10% quarter-on-quarter wafer-price increases at several 8-inch foundries in the first quarter of 2026. A second source can improve negotiating leverage, but it does not automatically make the finished DDI cheaper: Samsung must also pay for qualification, engineering changes, testing and additional inventory controls.
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What a display-driver IC does
A DDI converts image data from a phone’s application processor into the electrical signals that address individual pixels in an OLED or LCD panel. Samsung Semiconductor lists panel DDI as an official display-IC product category. As TechPixa’s Rob Adaro explained, the chip sits between the processor and the display panel.
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1Scan for outdated or missing drivers - takes under a minute2Repair Windows errors before they cause bigger problems3Fix the driver behind crashes, sound loss and screen glitchesThat position makes the DDI a system component, not a generic commodity that can be swapped without testing. The chip must match the panel’s resolution, timing scheme, refresh-rate modes, voltage and power limits, package, interface behavior and manufacturing tolerances. Display quality, touch and image timing, thermal behavior and production yield all have to remain within Samsung’s requirements. A company capable of fabricating a DDI therefore does not necessarily have a confirmed Galaxy design win.
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Suppliers named in the reports
| Company | Reported role | Status |
|---|---|---|
| Samsung System LSI | In-house Galaxy DDI supplier | Reported to retain exclusive supply for some S27 Ultra and Pro variants; incumbent status is the most established in the TrendForce account. |
| Novatek | Potential smartphone OLED DDI supplier | Reportedly asked to quote for the S28 Ultra. No final award has been confirmed. |
| DB GlobalChip | OLED smartphone DDI supply chain participant | Named by TrendForce among Korean companies being considered or used in the supply chain; model-specific awards were not stated. |
| Anapass | OLED smartphone DDI supply chain participant | Named by TrendForce; a confirmed Galaxy model assignment was not stated. |
| Wonik D2I | OLED smartphone DDI supply chain participant | Named by TrendForce; a confirmed Galaxy model assignment was not stated. |
| LX Semicon | OLED DDIs for Samsung Display IT panels | Seoul Economic Daily reported mass production beginning in March 2026, with an order in the hundreds of thousands of units. |
| UMC | Foundry discussed for additional DDI capacity | Reportedly facing capacity limits in the GlobalFoundries account; the exact Samsung award was not stated. |
| GlobalFoundries | Potential additional DDI source for Galaxy A-series phones | Possible use by the end of 2027 was reported second-hand and remains unconfirmed. |
What this means for Galaxy S27 and S28
Galaxy S27
On the TrendForce account, System LSI had secured exclusive DDI supply for some S27 Ultra and S27 Pro models. Standard and Plus variants were still being evaluated for other suppliers. That suggests Samsung may use different sourcing strategies within one generation, depending on panel configuration, expected volume and qualification timing.
Galaxy S28 Ultra
Samsung Display’s request for quotations from Novatek and other suppliers concerns the 2028 S28 Ultra. A request for quotation is an invitation to price and specify a component, not evidence that the supplier has passed validation or will ship in volume. Samsung MX, rather than Samsung Display alone, is expected to make the final supplier decision for the phone.
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- VIVID COLORS: Experience stunning colors across the entire display with the IPS panel. Colors remain bright and clear across the screen, even when you change angles. Tones and shades are represented consistently and beautifully with less color washing.
- SMOOTH PERFORMANCE: Stay in the action when playing games, watching videos, or working on creative projects. The 100Hz refresh rate reduces lag and motion blur so you don't miss a thing in fast-paced moments.¹
- MORE GAMING POWER: Gain a competitive edge with optimizable game settings. Color and image contrast can be instantly adjusted to see scenes more clearly, while Game Mode adjusts any game to fill your screen with every detail in view.
- EASY ON THE EYES: Protect your vision and stay comfortable, even during long sessions. Stay focused on your work with reduced blue light and screen flicker.²
- A MODERN AESTHETIC: Featuring a super-slim design with ultra-thin border bezels, this monitor enhances any setup with a sleek, modern look. Enjoy a lightweight and stylish addition to any environment.
Galaxy A series
The possible GlobalFoundries involvement is aimed at entry-level A-series phones by the end of 2027, according to the secondary report. Because that report is less direct, it should be treated as an evaluation path rather than a launch specification.
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For a practical supplier decision, the relevant tests extend beyond quoted chip price:
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- CURVED FOR ENHANCED ENGAGEMENT: An immersive viewing experience with a curved monitor that wraps more closely around your field of vision; It creates a wider view, enhancing depth perception and minimizing peripheral distraction
- SMOOTH PERFORMANCE FOR SEAMLESS CONTENT: Stay in the action when playing games, watching videos, or working on creative projects; The 100Hz refresh rate reduces lag and motion blur so you don't miss a thing in fast-paced moments¹
- MORE GAMING POWER: Gain the edge with optimizable game settings; Color and image contrast can be adjusted to see scenes more vividly and spot enemies hiding in the dark; Game Mode adjusts any game to fill the screen so you can view every detail²
- KEEP IT EASY ON THE EYES: Care for your eyes and stay comfortable, even during long sessions; Advanced eye comfort technology certified by TÜV reduces eye strain by minimizing blue light and reducing irritating screen flicker²
- INCREASED VERSATILITY: Connect to more; Plug devices straight into your monitor for increased flexibility, making your computing environment even more convenient
- Panel and model qualification: proven operation with the exact OLED or LCD panel, resolution and timing architecture.
- Capacity and second-source resilience: the ability to reserve wafers and recover when another supplier or foundry is constrained.
- Wafer and per-unit economics: total cost after packaging, testing, engineering changes and inventory requirements.
- Process and power performance: a process node and electrical design that meet battery, thermal and performance targets.
- Feature support: required refresh rates, variable-refresh behavior, brightness modes and panel interfaces.
- Geographic and foundry concentration: exposure to one country, fab network or logistics route.
- Yield and quality consistency: stable output at the volumes needed for a phone launch or monitor-panel program.
What the reports do not establish
There is no public Samsung announcement confirming a complete supplier expansion, a change in System LSI’s long-term role or final DDI awards for every Galaxy S27 or S28 model. Supplier assignments can change after electrical validation, panel revisions, yield reviews and commercial negotiations. The clearest dated expansion is LX Semicon’s reported OLED DDI production for Samsung Display IT products beginning in March 2026; the smartphone assignments remain model-specific reports.
Quick Recap
Expected timing
- March 2026: Reported start of mass production for LX Semicon OLED DDIs used in Samsung Display IT panels.
- 2026: TrendForce reports Samsung’s quotation and evaluation work for smartphone DDI suppliers, amid 5% to 10% quarterly wafer-price increases cited by Omdia for 1Q26.
- By the end of 2027: Possible use of GlobalFoundries as an additional source for entry-level Galaxy A-series phones, pending qualification and award.
- 2028 Galaxy S28 Ultra: Novatek and other suppliers are reported to be quoting, with Samsung MX expected to decide the final phone supplier.
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