General Motors has filed a patent for the passive cleaning of various screens using ultraviolet light. It is designed for automotive dashboards, but with some modifications it can be carried out practically. First of all, in touch displays, which quickly get dirty due to dirty and greasy and greasy touches.
the action is based on its structure The principle of titanium dioxide, which, when irradiated with ultraviolet light, changes its properties – from a hydrophobic material it turns into a hydrophilic one. This does not allow only moisture to accumulate on its surface, but starts a series of chemical reactions in it, which generate multiple emissions of radicals. Those, in turn, make up cell cells, DNA and cytoplasm, destroy fungi, microbes and bacteria.
Such a screen has two modes of operation: in one, it draws in water, which destroys organic debris, and in the other, it takes it away, dissolving the remaining dirt in itself. The General Motors patent describes a special display structure, where an exceptional three-component sample is added fourth – it emits a shade invisible to the human eye. Switching this light on alternately allows the screen to self-clean.
However, in technology there is another, simpler version. In it, the same titanium dioxide coating appears on the screen of a laptop or tablet, which is restored next to Up. It can be observed in those moments when the gadget was not in demand, so that it was cleaned. visible light is not emitted in this case, it would be optimal to set up automatics when starting cleaning at night time.
Source: Tech Cult
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