One-touch opaque smart glass is a laminated glass panel with a polymer dispersed liquid crystal interlayer (PDLC) loop. It is a privacy glass whose light transmission property changes and, changes from transperancy to opaque and vice versa by means of a small electric current. It allows controlling the amount of light and sound transmittance while blocking the light with a single switch. The glass, which allows its users to choose between privacy and visibility, can also be used as an ideal projection screen or meeting room glass pane.