Under-Display sensors

Samsung Display is showing its latest OLED displays, prototypes and technologies at SID Displayweek 2026.

First up we have Samsung's new Flex Chroma Pixel technology, that combines a PSF OLED emitter platform (this is the first time that Samsung Display shows a PSF OLED prototype), with a polarizer-free OLED architecture (Samsung LEAD) to enable high brightness and a wide color gamut: the new display achieves up to 3,000 nits brightness in HBM mode, while supporting the BT.2020-96 color space. 

In 2027 Apple will release its 20th iPhone model, and it is reported that the company is working with Samsung to develop a special OLED display for the new device, which may be called the iPhone 20 - or the iPhone XX. 

A Quad-curved iPhone (AI render)

The new display is said to offer a polarizer-free (COE) architecture, a "micro-curved" flexible AMOLED that will curve on all four sides, and under-the OLED Face-ID and camera.

Aumovio, an automotive technology company that was spun-off from Continental in 2025, announced that it has secured a major order to supply an automotive OLED display. This display will feature an invisible under-the-display camera.

Aumovio did not provide many details, beyond saying that the customer is a premium European-based car maker, and the displays will be used in a volume model.

Tianma Microelectronics has established itself as one of the world's leading AMOLED producers, building on its legacy as an LCD producer. The company produced almost 60 million OLED displays in 2024, and it has grown over 20% in 2025, and produced over 75 million panels.

Tianma is not amongst the world three leading OLED producers (Samsung, BOE and LG Display), but it is a strong competitor, and holds an estimated 8-10% of the total smartphone AMOLED market. The company is also building strong capabilities in automotive OLEDs, and high-end smartphone AMOLED displays. In this article, we detail Tianma's history, AMOLED capabilities and fabs, its technology roadmap, opportunities and challenges, and its microLED and ePaper projects.

Researchers from Korea's Pohang University of Science and Technology (POSTECH) have developed the world's first pixel-based local OLED sound technology, which enables each pixel of an OLED display to simultaneously emit different sounds, essentially allowing the display to function as a multichannel speaker array. The researchers demonstrated the technology using a 13-inch OLED panel.

The researchers created the sound system by embedding ultra-thin piezoelectric exciters within the OLED display frame. These piezo exciters, arranged similarly to pixels, convert electrical signals into sound vibrations without occupying external space. As a result, each pixel can act as an independent sound source, enabling Pixel-Based Local Sound technology. The researchers also developed a method to completely eliminate sound crosstalk, ensuring that multiple sounds from different regions of the display do not interfere with each other.

Samsung Display is showing several new displays and technologies at Displayweek 2025. First up we have Samsung's latest Sensor OLED display protype that allows for allows fingerprint recognition and cardiovascular health monitoring across the entire screen surface. 

To create this display, SDC integrated OPD directly during the OLED deposition process, embedding the sensors into the panel itself (what is sometimes referred to as a bi-directional OLED). Beyond fingerprints, it measures biometric data such as heart rate, blood pressure and stress levels. This technology is based on how OLED light reflects differently depending on the contraction and relaxation of blood vessels.

China-based Tianma is showing many OLED displays and prototypes at SID Displayweek 2025. First up are two 13" concave displays (C-shaped and L-shaped), aimed for automotive dashboards. The company says that these distinctive contours not only deliver a striking visual experience but also helps enhance driver focus. Both displays are based on Tianma's tandem OLED architecture, which the company calls SLOD (Stacked Layer OLED Device, more on this below).

The second display is a 6.67" AMOLED that integrates a microLens array (MLA, which Tianma refers to as MLP or Micro Lens Pattern). Tianma says they adopt an innovative optical design to significantly boost the front-view light extraction efficiency. Tianma also shows a 6.78" tandem (SLOD) smartphone AMOLED display, to increase power efficiency. Tianma says that unlike traditional tandem OLEDs, its SLOD technology adopts a CGL structure with an extremely low device voltage using a differentiated light-emitting unit - thus achieving higher power efficiency. Tianma reports that the power consumption is reduced by 30% compared to a single-layer device, while brightness is increased by 25% and lifetime is up to four times higher.

Researchers from Koreas Pohang University of Science and Technology (POSTECH) with support from LG Display, developed the world's first smartphone-type OLED panel that can freely transform its shape while simultaneously functioning as a speaker. LG Display have developed and commercialized OLED that act as speakers for both smartphones and TVs many years ago - but this is the first time that such a technology is applied to a truly flexible display.

The POSTECH research team used a specialized ultra-thin piezoelectric polymer actuator to create the OLED speaker, and when integrated into a flexible OLED panel, this actuator enables electrically driven shape transformation into a wide variety of complex forms—not only concave curves, but also convex, S-shaped, inversed S-Shaped and wave-like configurations that respond dynamically, almost like a display in motion.