Samsung Display at IMID 2026

IMID, the International Meeting on Information Display, is the annual gathering of the Korean Information Display Society, where the research community and the panel makers end up in the same hall. The twenty sixth edition ran at BEXCO in Busan. Samsung Display brought a booth that reads like a materials science lecture you can walk through, and four ideas stood out. Every one of them, followed to its source, is a story about molecules.

Introduction: reading a display booth like a chemist

A display booth is built to be read as a list of products. Read it instead as a list of materials problems and the same floor tells a different story. A brighter panel is a stack that survives more current. A wider colour gamut is a narrower emission peak. A display that bends is an organic film that tolerates strain without cracking. A panel qualified for a car is a molecule that does not degrade at eighty five degrees Celsius after a decade of thermal cycling.

Samsung Display organised its IMID stand around four such problems: angular emission, form factor, colour purity, and automotive lifetime. What follows is each of them explained from the materials side, with the exhibits that made the argument.

The Samsung Display stand at IMID 2026, BEXCO, Busan.

Wide viewing angle: an optical cavity problem, not a film problem

Two panels sat side by side on the stand, labelled conventional and enhanced. The same image ran on both, and stepping to the side made the difference obvious: on the conventional panel the image dimmed and shifted in colour, on the enhanced one it held.

The instinct is to call this a film problem, solved by a diffuser laminated on top. It is not. Angular emission in an OLED is set inside the stack, by the optical microcavity formed between the reflective anode and the semi transparent cathode. The spacing between those two surfaces, the refractive indices of the organic layers between them, and the position of the recombination zone within that spacing together decide which wavelengths constructively interfere at which angle. Tune the cavity for maximum on axis brightness and you buy that brightness with a fall off to the side. Tune it flatter and the off axis behaviour improves.

This is why the transport layers matter as much as the emitter. Their thickness sets the cavity length, their refractive index sets the optical path, and their purity decides whether the recombination zone stays where it was designed to sit over the life of the panel. Parts per billion metal contamination in a transport material shifts charge mobility, the recombination zone drifts, and the carefully tuned cavity slowly detunes. A viewing angle specification is, in the end, a purity specification.

Conventional versus enhanced wide viewing angle, shown side by side on identical content.

Form factor: stretchable, slidable, humanoid

The second theme was shape. A stretchable panel under the name Dynamic OmniView, quoting twenty five percent stretchability. A vertical slidable display extending to fifteen and a half inches. An OLED turntable, an AI pendant, and a humanoid head with a curved OLED face rated from minus forty to plus eighty five degrees Celsius at a thirty millimetre minimum bend radius.

None of this is possible with a backlight, which is the easy half of the answer. The hard half is that every organic layer in the stack has to accept mechanical strain without cracking, delaminating, or opening a path for moisture and oxygen. Glass transition temperature, film adhesion, and the fracture behaviour of amorphous organic films become design parameters rather than footnotes. A material that performs beautifully on a rigid substrate can fail on the first bend cycle.

The humanoid specification is worth pausing on. Minus forty to plus eighty five is not a display range, it is an automotive and industrial range, and it tells you the encapsulation and the organic layers have both been qualified well beyond consumer conditions.

QD-OLED and the gaming wall: colour purity as a materials specification

The gaming corner is where the colour science lives. A thirty four inch quantum dot OLED at three hundred and sixty hertz, a thirty one and a half inch ultra high definition panel at the same refresh rate, and a sixteen inch WQ OLED at three hundred hertz for laptops.

Quantum dot OLED starts from blue OLED emission and down converts it through quantum dots into red and green. The specification that decides everything downstream is emission bandwidth. Quantum dots produce a full width at half maximum of roughly twenty to thirty nanometres, which places the red and green primaries close to the spectral locus on the CIE 1931 diagram and pushes coverage of BT.2020 past ninety percent. A broad emitter cannot reach those primaries no matter how the panel is driven, because the colour a pixel can produce is bounded by the physics of its emission spectrum.

The same argument is now being made in purely organic terms. Multi resonance TADF emitters, rigid boron and nitrogen frameworks, reach comparable narrowness without a conversion layer. That is the direction of travel: get the narrow spectrum from the molecule itself.

31.5 inch UHD QD-OLED at 360Hz on the gaming wall.

Digital cockpit and the Big Hole Display: where lifetime beats efficiency

The fourth theme was the car, and it is the hardest qualification organic materials face. Samsung showed a Big Hole Display, where an opening is cut inside the active area so a physical control sits surrounded by working pixels. Round drive control panels. A cockpit built almost entirely from OLED surfaces.

Cutting a hole inside the active area is an encapsulation problem before it is anything else. Every new edge is a new ingress path for moisture and oxygen, and organic emitters are unforgiving about both. The thin film encapsulation has to seal a boundary that runs through the middle of the panel, not just around its rim.

More broadly, automotive is where the industry stops optimising for peak efficiency and starts optimising for stability. A cabin cycles between well below freezing and well above ambient, sits in direct sunlight, and is expected to work for ten to fifteen years. Under those conditions a slightly less efficient emitter with a higher glass transition temperature and cleaner degradation chemistry beats a record setting one that ages badly. Lifetime, not efficiency, decides this market.

Four generations of OLED emitters: the chemistry behind every number

Every specification on that floor sits somewhere on a chemistry timeline that is now nearly forty years long. It is worth setting out plainly, because it explains the roadmap.

First generation: fluorescence, 1987

Tang and VanSlyke demonstrated the first practical thin film OLED. Fluorescent emitters use only singlet excitons. Since electron and hole recombination produces singlets and triplets in a fixed one to three ratio, internal quantum efficiency caps near twenty five percent. Three quarters of the excitations are lost as heat.

Second generation: phosphorescence, 1998

Baldo, Thompson and Forrest showed that heavy metal complexes, iridium above all, allow triplets to emit. Spin orbit coupling opens the forbidden transition and internal quantum efficiency approaches one hundred percent. Commercial red and green phosphorescent emitters descend directly from this work. Blue remains the unsolved case, because the energy required shortens device lifetime.

Third generation: TADF, 2012

Adachi and colleagues demonstrated thermally activated delayed fluorescence. By designing molecules with a very small gap between singlet and triplet states, ambient thermal energy lifts triplets back up to the emitting singlet. Full exciton harvesting without any precious metal.

Fourth generation: MR-TADF, 2016

Hatakeyama and colleagues introduced multi resonance TADF: rigid boron and nitrogen frameworks whose emission is both efficient and very narrow, twenty to thirty nanometres FWHM. This is the generation that lets a purely organic emitter deliver quantum dot grade colour purity, and it is where a great deal of current development effort sits.

The takeaway

Samsung Display’s IMID 2026 booth read like a map of where OLED materials are going. Light is being steered by cavity design rather than by films laid on top. Colour is being set by narrowband emission, from quantum dots today and from narrowband organic emitters next. Form factors are being freed by self emission and constrained by the mechanical behaviour of organic films. Automotive lifetimes are being won by molecular stability and purity rather than by peak efficiency. Every headline feature on that stand was, underneath, a chemistry result. The companies that master the underlying materials will define the next decade of displays.

Glossary for the general reader

OLED. Organic light emitting diode. A display pixel made of thin organic semiconductor films that emit light directly when current flows, with no backlight.

IQE and EQE. Internal and external quantum efficiency. IQE counts photons generated per injected electron inside the device; EQE counts photons that actually escape into the air, typically 20 to 30 percent of IQE without special outcoupling.

Singlet and triplet excitons. The two spin states formed when electrons and holes meet, in a fixed 25 to 75 ratio. Which of them a molecule can use for light defines its emitter generation.

FWHM. Full width at half maximum, the width of an emission peak. Narrower emission means purer colour; 20 to 30 nm is the current gold standard for both quantum dots and MR-TADF emitters.

CIE 1931 and BT.2020. The standard map of human colour perception, and the widest broadcast colour gamut defined on it. Covering more of BT.2020 requires primaries with narrow FWHM.

Optical microcavity. The resonant structure formed between the reflective anode and the semi transparent cathode of an OLED. Its dimensions decide how brightness and colour change with viewing angle.

Quantum dot colour conversion. Using semiconductor nanocrystals to absorb blue light and re emit it at a longer wavelength with a very narrow spectrum, the basis of QD-OLED.

Thin film encapsulation. The alternating inorganic and organic barrier layers that keep moisture and oxygen away from the organic stack. Every cut edge in a panel is a new sealing problem.

MR-TADF and hyperfluorescence. Multi resonance TADF emitters are rigid boron nitrogen molecules with very narrow emission; hyperfluorescence pairs them with a TADF sensitiser that harvests all excitons for them.

Sublimation purification. Purifying a material by evaporating and recondensing it under vacuum, the standard route to the parts per billion purity levels that long lived OLED devices require.

Sourcing the materials behind this story

LUMORA, research to pilot quantities. LUMORA, a brand of LAMKO Co., Ltd., supplies high purity sublimed OLED, OPV and semiconductor materials, including emitters, hosts and charge transport materials, for research and development use. Every lot ships with a certificate of analysis. Browse the catalogue at lumorachemicals.com or write to sales@lumorachemicals.com.

LAMKO, scale up and CRDMO. For kilogram to production scale supply, custom synthesis of new emitters, and full CRDMO support from first gram to production volume, work with LAMKO. Projects proceed NDA first and your intellectual property stays yours. Start by describing your project to LUMI, our AI project workspace, at lamko.co.kr/lumi, or visit lamko.co.kr.

The LAMKO Co., Ltd. and LUMORA stand at IMID 2026.

References and sources

C. W. Tang, S. A. VanSlyke, Applied Physics Letters 51, 913 (1987). M. A. Baldo, M. E. Thompson, S. R. Forrest et al., Nature 395, 151 (1998). H. Uoyama, C. Adachi et al., Nature 492, 234 (2012). T. Hatakeyama et al., Advanced Materials 28, 2777 (2016). Product and exhibit information: Samsung Display newsroom and press coverage of IMID 2026. All photographs in this document were taken by LUMORA at IMID 2026, BEXCO, Busan.

Disclaimer: this document is educational commentary based on our own visit to IMID 2026 and on publicly available information. All product names, brands and trademarks belong to their respective owners. No affiliation or endorsement is implied. Specifications quoted are as presented by the exhibitors and may change.