Touch screen with paper

Paper can be used as a touch screen, and this idea has been demonstrated by Japanese experts.

Everything happens as usual. One touches the butterfly on the screen, and the computer reads all the information about the creature. The only abnormality here is that the screen is made of paper, not glass as usual.

That technology is called multicolor paper computers , invented by scientists Kohei Tsuji and Akira Wakita from Keio University, Japan.

Two Japanese experts have used color-changing paper due to the temperature-sensitive liquid crystal ink. Squid is contained in the tiny capsule hidden underneath.

Although it looks a little unusual, the screen paper acts as a touch screen. A thin layer of slab above the task of detecting small changes of electric current under the impact of touching. There is another layer of silver that acts as an electrode, while a carbon layer acts as a thermal element.

When a person touches the paper, the copper layer recognizes the change in capacitance, sends the signal through the silver electrode and stimulates the heated carbon to heat sensitive ink, resulting in a change in the surface of the screen. form.

The idea behind the invention of Japanese professionals is how to bring the interaction to ordinary paper. Touch screens are made quite sophisticated, but the final product is not flexible. Now, for those who want to use the unique features of paper, this technology offers a great solution that is simple.