A glasses-free three dimensional display device comprising a glasses-free three dimensional display panel, the glasses-free three dimensional display panel comprising a display panel and a grating panel disposed on a light exiting side of the display panel, wherein
- the grating panel comprises a first substrate and a second substrate disposed opposite to each other, and liquid crystals disposed between the first substrate and the second substrate;
- the first substrate comprises a first base substrate and a first electrode pattern disposed on the first base substrate, the first electrode pattern comprises at least two first gating electrodes, and the second substrate comprises a second base substrate and at least two second gating electrodes disposed on the second base substrate;
- each of the first gating electrode and the second gating electrode is a strip shape having a length direction and width direction, where the length direction is longer than the width direction, and where the length direction of the first gating electrode is parallel to the length direction of the second gating electrode;
- and
- an orthographic projection region of the first gating electrode on the first base substrate is parallel to an orthographic projection region of the second gating electrode on the first base substrate and
- each of the first gating electrodes and each of the second gating electrodes are individually connected to a gating control unit, and each of a first touch electrode and each of a second touch electrode are individually connected to a touch control unit;
- where the gating control unit is configured to respectively apply corresponding voltages on each of the first gating electrodes and each of the second gating electrodes to display a glasses-free three dimensional image on the glasses-free three dimensional display panel;
- and
- the gating control unit is configured to apply corresponding voltages to a first portion of the first gating electrodes and a first portion of the second gating electrodes in a first region to display a glasses-free three dimensional image on the glasses-free three dimensional display panel in the first region and not apply voltage to second portion of the first gating electrodes and a second portion of the second gating electrodes in a second region to display a two dimensional image in the second region so that a two-dimensional image and a glasses-free three dimensional image are simultaneously displayed on two dimensional image.