Developing the current designs of ultra-thin solar panel electrodes, Stanford researchers and their partners in Korea have developed a new structure for OLED light-emitting organic diode screens that could enable TVs, smartphones and virtual or augmented reality devices to reach 10,000p/bps. For comparison. The accuracy of new smartphones ranges from 400 to 500p per inch.
Such high-density pixel screens will be able to show stunning images in realistic detail. Which will be more critical for head screens designed only centimetres from our faces.
This research was conducted by Stanford University materials scientist mark brungisma in collaboration with the Samsung advanced institute of technology, which brunjirma initiated because he wanted to create a super-thin solar panel design.
“We have benefited from the fact that on the nanoscale light can flow around objects such as water flow,” said brunjiersma, professor of materials science and engineering and lead author of the October 22 scientific paper. Which deals with this research in detail. The nanoscopic field continues to progress, and we are now beginning to influence existing technologies. our designs have worked well with solar cells, and now we have an opportunity to influence next-generation screens.”
In addition to a standard pixel density. The new OLED screens (new metavutonic or photon) will also be brighter, illuminated and have better colour accuracy than current versions. They will be much easier and cost-effective to produce as well.
When electricity flows through OLED materials, devices emit red, green or blue light. Each pixel in the OLED screen consists of smaller subpixels that produce those primary colours. When accuracy is high enough, our eyes see pixels as a single colour. Oled screens are eye-catching technology because they are light, flexible and thin and produce brighter images and colours than other screen types.
This research aims to provide an alternative to the two current types of commercial OLED screens. One called a slide (red- green- blue) with individual pixels. Each with only one emitter colour. These OLED screens are made by spraying each layer of material through a precise metal grid to control the composition of each pixel. But unfortunately, they can only be produced on a small scale, such as smartphones.
Larger devices, such as TVs, use white OLED screens. Each of these sub-pixels contains a set of all three emitters and then relies on filters to determine the final colour of the sub-pixel. Which is more accessible in manufacturing terms because filters reduce the total output of light. White OLED screens need more energy and are likely to make a visual impression on the net.
Joe, the lead author of the scientific paper, said: “professor Brunei’s research topics were intense academically. And were like hidden treasures for me as an engineer and researcher at the Samsung advanced institute of technology.”
The important innovation responsible for the solar panel and the new OLED technology is a base layer of reflective metal with nano-ripples (smaller than microscopy), called the new super-optical surface. The super surface can harness the reflective properties of light and allow different colours to react or ring within pixels. These responses are essential for facilitating effective light extraction from OLED materials.
“This is like how musical instruments harness acoustic resonance to produce beautiful and easy-to-hear tones,” said Bruinsma. Who conducted the research as part of the gable advanced materials laboratory at Stanford.
By contrast, in the proposed OLED screens. The base layer ripples allow each pixel to be at the same height, and this facilitates a more straightforward process of large-scale manufacturing on a small scale.
In laboratory tests, the researchers produced miniature pixels to validate the idea. Compared to the colour-filtered white slide materials used in OLED TVs, these pixels have higher colour purity. And a double increase in shine efficiency. A measure of how bright the screen compares to the amount of energy you use. And allows for a super high pixel density of 10,000 pixels per inch.
Samsung continues to integrate this work into full-size screens. And brunsingerma is eagerly awaiting results in the hope that he will be among the first people to see a super-OLED screen.
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