A mirror TV or TV mirror is a television that is convertible to a mirror. Mirror TVs are often utilized to save space or conceal electronics in living areas such as bedrooms and living rooms. Mirror TVs can be integrated into interior designs, including Smart Homes and Home automation integration.
The device consists of special semi-transparent mirror glass with an LCD TV behind the mirrored surface. The mirror is carefully polarized to allow an image to transfer through the mirror, such that when the TV is off, the device looks like a mirror.
Some manufacturers offer high-end input and output options for entire-home A/V integration.
References
Mirror TV Wikipedia(Text) CC BY-SA