Skip to main content

Perovskite display technology trends and updates

Researchers have successfully showcased a second-generation digital display utilizing perovskite light-emitting diodes.
(Structure of AM PeLED. a, Micrograph of one single pixel in the TFT backplane showing the layout of TFT and LED area. b, The schematic diagram shows the control of LED by the 3T1C circuit. c, Structure diagram of the drive TFT and LED. d, e Cross-sectional scanning electron microscope (SEM) images of the drive TFT and ITO. Credit: Nature Electronics (2024). DOI: 10.1038/s41928-024-01181-5)

Microelectronic engineers from multiple institutions in China, collaborating with a Swedish counterpart, have successfully showcased a second-generation digital display screen employing perovskite light-emitting diodes, departing from conventional LED technology.
In their study published in Nature Electronics, the team enhanced the device and showcased its sensing capability.
In April, a research team, including some of the same members, demonstrated a digital display screen using LEDs composed of perovskite rather than semiconductor compounds like gallium arsenide or indium gallium nitride. They also demonstrated that such screens could function as sensing devices.
In this new study, the researchers developed a digital display device utilizing perovskite light-emitting diode (PeLED) technology, achieving double the pixel resolution.
The materials currently used to manufacture LEDs possess qualities such as high acuity and sharpness. However, the technology has limitations, including an inability to function as a sensor, necessitating the use of additional components to bridge this gap.
Researchers have been investigating perovskite to overcome this limitation, as it can both emit and absorb light, allowing it to function as a sensing device. Incorporating PeLEDs into a phone could enable the screen to sense touch, fingerprints, and ambient light, eliminating the need for extra components.
(One-inch AM PeLEDs with a resolution of 90 PPI (pixel size 270 μm × 270 μm). a–c, Digital photographs of the red (a), green (b) and blue (c) emissive AM PeLEDs showing cartoon pictures. d–f, EL spectra of the red (d), green (e) and blue (f) emissive AM PeLEDs at various Vdd driving voltages, displaying a single peak with narrow full-width at half-maximum (FWHM). g–i, Transient EL intensities of red (g), green (h) and blue (i) emissive AM PeLEDs under various pulse durations. Credit: Nature Electronics (2024). DOI: 10.1038/s41928-024-01181-5)

The new screen demonstrated by the research team featured a 90 ppi density, which, while significantly lower than that of current smartphone screens, represents progress toward achieving parity. It also exhibited a range of sensing capabilities. The researchers anticipate that such displays will have extended lifespans and lower energy consumption.
One major obstacle researchers must overcome is the stability of PeLEDs, as exposure to oxygen or moisture causes degradation, necessitating a solution before commercial application.

Labels:

Comments

Post a Comment

Popular posts from this blog

NASA chile scientists comet 3i atlas nickel mystery

NASA and Chilean Scientists Study 3I/ATLAS, A Comet That Breaks the Rules Interstellar visitors are rare guests in our Solar System , but when they appear they often rewrite the rules of astronomy. Such is the case with 3I/ATLAS , a fast-moving object that has left scientists puzzled with its bizarre behaviour. Recent findings from NASA and Chilean researchers reveal that this comet-like body is expelling an unusual plume of nickel — without the iron that typically accompanies it. The discovery challenges conventional wisdom about how comets form and evolve, sparking both excitement and controversy across the scientific community. A Cosmic Outsider: What Is 3I/ATLAS? The object 3I/ATLAS —the third known interstellar traveler after "Oumuamua (2017) and 2I/Borisov (2019) —was first detected in July 2025 by the ATLAS telescope network , which scans he skies for potentially hazardous objects. Earlier images from Chile's Vera C. Rubin Observatory had unknowingly captured it, but ...
Post a Comment
Read more

Quantum neural algorithms for creating illusions

Quantum Neural Networks and Optical Illusions: A New Era for AI? Introduction At first glance, optical illusions, quantum mechanics, and neural networks may appear unrelated. However, my recent research in APL Machine Learning Leverages "quantum tunneling" to create a neural network that perceives optical illusions similarly to humans. Neural Network Performance The neural network I developed successfully replicated human perception of the Necker cube and Rubin's vase illusions, surpassing the performance of several larger, conventional neural networks in computer vision tasks. This study may offer new perspectives on the potential for AI systems to approximate human cognitive processes. Why Focus on Optical Illusions? Understanding Visual Perception O ptical illusions mani pulate our visual  perce ption,  presenting scenarios that may or may not align with reality. Investigating these illusions  provides valuable understanding of brain function and dysfunction, inc...
Post a Comment
Read more

fractal universe cosmic structure mandelbrot

Is the Universe a Fractal? Unraveling the Patterns of Nature The Cosmic Debate: Is the Universe a Fractal? For decades, cosmologists have debated whether the universe's large-scale structure exhibits fractal characteristics — appearing identical across scales. The answer is nuanced: not entirely, but in certain res pects, yes. It's a com plex matter. The Vast Universe and Its Hierarchical Structure Our universe is incredibly vast, com prising a p proximately 2 trillion galaxies. These galaxies are not distributed randomly but are organized into hierarchical structures. Small grou ps ty pically consist of u p to a dozen galaxies. Larger clusters contain thousands, while immense su perclusters extend for millions of light-years, forming intricate cosmic  patterns. Is this where the story comes to an end? Benoit Mandelbrot and the Introduction of Fractals During the mid-20th century, Benoit Mandelbrot introduced fractals to a wider audience . While he did not invent the conce pt —...
Post a Comment
Read more