Transparent liquid crystal display device

A transparent liquid crystal display device comprising:

• a transparent liquid crystal display unit that has a first surface and a second surface opposite to the first surface;
• a first display unit;
• a second display unit;
• and
• a control unit that performs display control of the transparent liquid crystal display unit, the first display unit, and the second display unit,
• wherein the transparent liquid crystal display unit includes:
• a first substrate having the first surface;
• a second substrate having the second surface;
• a display layer that is disposed between the first substrate and the second substrate and transitions between a transparent state in which light is transmitted and a display state in which information is displayed;
• and
• a display area that is provided in an area where the first substrate, the second substrate, and the display layer overlap each other,
• wherein the information is displayed to be visually recognized from the first surface side and the second surface side,
• wherein, in the first display unit, one surface of a substrate is disposed on the first surface, and transition for an area that covers the display area is performed between a black display state in which black is displayed and a transparent state in which light is transmitted,
• wherein, in the second display unit, one surface of a substrate is disposed on the second surface, and transition for an area that covers the display area is performed between a black display state in which black is displayed and a transparent display state in which light is transmitted, and
• wherein the control unit is configured to:
• perform display control to repeat a first display period and a second display period;
• in the first display period, display first information to be displayed on the first surface side on the transparent liquid crystal display unit;
• cause the first display unit to transition to the transparent state;
• and cause the second display unit to transition to the black display state;
• and
• in the second display period, display second information to be displayed on the second surface side on the transparent liquid crystal display unit;
• cause the first display unit to transition to the black display state;
• and
• cause the second display unit to transition to the transparent state.