Display Apparatus and Display Control Method

A display apparatus, comprising:

• an organic light-emitting display device with electrostatic attraction, comprising a transparent cathode layer, a transparent anode layer and an organic light-emitting layer positioned between the transparent cathode layer and the transparent anode layer;
• frustrated total reflection devices, positioned on both sides of the organic light-emitting display device respectively and each comprising an active film layer and a frustrated switch electrically connected with the active film layer, wherein the frustrated switch is configured to be turned on or off according to a received control signal to control whether the active film layer has electrostatic attraction or not, and the control signal includes a turn-on signal or a turn-off signal;
• and
• sealants, bonded between the organic light-emitting display device and the frustrated total reflection devices to form gaps between the frustrated total reflection devices and the organic light-emitting display device,
• wherein when the active film layer has electrostatic attraction, the active film layer and the display device are in an adsorption state, so that light emitted by the organic light-emitting display device is emitted from the active film layer;
• and when the active film layer does not have electrostatic attraction, there is a gap between the active film layer and the organic light-emitting display device to allow light emitted by the organic light-emitting display device to be totally reflected by the gap.