Phosphorescent

Last month Visionox provided an update on its pTSF OLED emitter material platform, saying that it has started mass producing smartphone AMOLED displays that utilize such materials - green pTSF emitters, already adopted by flagship models (which Visionox does not disclose). We posted an analysis of this emitter platform.

Universal Display posted an interesting article that discloses that the company is supplying its green PHOLED for Visionox's pTSF panels, working together with Eternal Material Technology.

Summer Sprout Technology, in collaboration with Juhua Printing Display Technology have co-developed a new high-performance OLED device, based on spin-coated (soluble) PSF OLED emitters.

Spin-coated PSF OLEDs, bottom-emitting (a) and top-emitting (b)

The two companies says that they have achieved a level of efficiency, color purify and lifetime similar to commercial evaporated devices.  

OLED material developer LORDIN has officially launched its IPO process, as the company plans to list on the KOSDAQ, and raise $25 million to bring its phosphorescent blue OLED material platform to market.

The company has signed a lead underwriter agreement with Woori Investment & Securities. This will be a long process - the fire review application is planned for the first half of 2027. The company intends to pursue a listing through the technology exception pathway.

Over the past few months, several OLED-Info Pro readers have asked me to revisit Universal Display Corporation (UDC) from a fresh perspective: not as a classic high-growth OLED pure play, but as a potential value stock in a maturing industry ecosystem. This article is my attempt to answer that request directly, and to frame UDC as an established, cash-generative business.

It is important to state - this article is not an investment advice, and you should learn more before you make investment decisions. The author of this post may (and actually does) hold a position in some of the mentioned companies.

Universal Display is one of the OLED industry’s pioneers, a US-based IP and materials company whose phosphorescence emitter technologies and compounds sit at the heart of many of the world’s commercial OLED displays, from smartphones and TVs to IT and automotive panels. The company licenses its OLED patents and sells proprietary PHOLED materials to virtually all leading panel makers, generating high-margin, royalty-like revenue streams from a portfolio that now numbers thousands of issued and pending patents worldwide. We recently posted a spotlight article that discusses UDC's current status and future prospects.

For most of OLED's commercial history, the industry operated as a near-monolith: virtually every panel maker deposited RGB organic materials through a Fine Metal Mask (FMM) on 6th-generation glass (or polyimide substrates with a glass carrier), while LG Display stood as the sole practitioner of its WRGB architecture for large-area OLED production.

In recent years, we have seen the emergence of new OLED architectures, processes and materials that signal the end of this technological uniformity. In this article, we examine the different technologies, speculate how the industry is changing and where it is headed - and understand the implications for supply chain companies. 

AMOLED display producer Visionox provided an update on its pTSF OLED emitter material technology, that it has been developing for many years in collaboration with Tsinghua University since 2014.

pTSF, or  Phosphor-assisted TADF Sensitized Fluorescence is an emitter platform that is based on three materials, phosphorescence materials, TADF-type materials, and a fluorescent emitter. According to Visionox, this emitter system enables high power consumption, long lifetime, and a narrowband emission (to enable a wide color gamut display). In an exciting announcement, Visionox revealed that it is already mass producing pTSF OLEDs - in this article we detail Visionox's pTSF technology, its latest status, its future roadmaps, and what it means for UDC and other emitter producers.

OLED material developer LORDIN says that it hopes to start mass producing its high-efficiency blue phosphorescence OLED emitter by the end of 2026, after having verified the commercial feasibility of the material a few months ago.

Following six years of intensive research and development, LORIND's Jetplex ZRIET platinum phosphorescence blue OLED emitters seem to be on the verge of mass production, with improved stability - the material lifetime is said to be suitable for commercial AMOLED displays. LORDIN says that its materials also improve over current phosphorescence emitters with lower driving voltage, and better efficiency degradation (roll-off) at high brightness. 

Researchers from Seoul National University, in collaboration with researchers from Drexel University have developed the world's most efficient (17% EQE) fully-stretchable OLED device, using an exciplex-assisted phosphorescent layer and MXene-contact stretchable electrodes.

In a fully stretchable OLED, all constituent layers exhibit intrinsic mechanical stretchability. Most reported stretchable displays rely on rigid light-emitting devices connected by stretchable interconnects, and these suffer from poor mechanical reliability at junctions under strain, limited skin conformability, and degradation in display resolution.