Keyboard based on PCB transparency technology

Hello everyone, I am Hong Li @Bilibili.
The content shown on the cover is real. The full version will be available to you in 2023.3. It is still in the video editing and assembly stage.
I have already explored the mechanical keyboard category on the shell material and key shaft principle, and the remaining two major components are the PCB and the main control. Transparent keyboards are actually available on the market, but they still stop at the level of technology based on shell replacement, and are not real innovations. The transparent part stops abruptly when it reaches the printed circuit board part. In other words, only by breaking through the transparent printed circuit board technology can a keyboard be truly transparent. Traditional printed circuits are made of glass fiber, epoxy resin adhesive, and copper foil to form a sandwich structure. If the glass fiber layer is replaced with polycarbonate, the epoxy resin is replaced with transparent adhesive, and then produced through photosensitivity, science fiction movies can be realized. Products with a sense of technology that can only be found in China.