Cut in half also works properly Japanese scientists invent new flexible display materials

Recently, a research team from the National Institute of Materials Science (NIMS) in Japan invented a new flexible display material. As shown in the figure, the biggest feature of this material is that it can be cut into any shape by scissors without affecting the normal display.

Liquid crystal display technology (LCD) and organic electroluminescent technology (OEL) represented by OLED are the most common electronic screen display technologies at present, which almost occupy the display screen of all electronic devices in people's daily life. From mobile phones and tablets to TVs, computers, and various wearable devices that have become popular in recent years, the display technology they use is either LCD or OEL.

However, regardless of LCD or OEL, they can not be cut, mainly due to the following two points. The first is sealing. For an LCD, two mutually parallel glass substrates are filled with liquid crystals in a molten state, which causes liquid crystal leakage once cut. For OELs, ​​organic materials used for electroluminescence are usually very sensitive to water vapor and oxygen. Once exposed to air or other complex environments, they will definitely affect normal operation. The second reason that can't be cut is power supply. Both the LCD and OEL need continuous power supply to display normally, and they cannot work properly once the power is turned off. This means that once the cut is made, the part without the power cable will not work.

New flexible display materials from NIMS differ from traditional display technologies. This new technology uses a high-molecular polymer made of a mixture of organic matter and metal as the electroluminescent material, and then sprays the polymer onto a flexible substrate to form a layer that prevents oxidation and water vapor intrusion. Stable coating so that the user can cut arbitrarily without worrying about too sensitive electroluminescent materials. What's more important is that the new technology only needs to power on for a few seconds to change the display information, after which it can be powered off. Therefore, both in terms of power supply and hermeticity, this new type of flexible display material overcomes the shortcomings of LCDs and OELs so that it can be arbitrarily cut without affecting use.

So far, this new material can only show a single color and can not display color patterns, but scientists from NIMS said they are trying to change this. They said that in the future, people will be able to use this new material to change the color of any object as they please, such as home windows, car interiors and shells, umbrellas, sunglasses, etc. It is a truly colorful world.

The study was part of Japan’s strategic basic research and was funded by Japan’s JST Corporation.

Source: phys

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