A liquid crystal grating panel, comprising: an upper substrate; a lower substrate; liquid crystals disposed between the upper substrate and the lower substrate; an upper polarizer arranged on an internal surface or an external surface of the upper substrate; a first electrode arranged on the internal surface of the upper substrate, the first electrode including a plurality of strip electrodes arranged in parallel and at intervals; a third electrode arranged on a different layer from the first electrode and separated from the first electrode through an insulating layer, the third electrode including a plurality of strip electrodes arranged in parallel and at intervals, and the strip electrodes of the third electrode and the strip electrodes of the first electrode being offset relative to each other in a horizontal direction; and a second electrode arranged on an internal surface of the lower substrate; or a first electrode arranged on an internal surface of the lower substrate, the first electrode including a plurality of strip electrodes arranged in parallel and at intervals; a third electrode arranged on a different layer from the first electrode and separated from the first electrode through an insulating layer, the third electrode including a plurality of strip electrodes arranged in parallel and at intervals, and the strip electrodes of the third electrode and the strip electrodes of the first electrode being offset relative to each other in the horizontal direction; and a second electrode arranged on the internal surface of the upper substrate; wherein the first electrode is configured to generate an electric field with the second electrode at first frame scanning periods of image scanning to form a first grating for transmitting images in odd pixel columns of a display panel to the left eye of a user and transmitting images in even pixel columns of the display panel to the right eye of the user; the third electrode is configured to generate an electric field with the second electrode at second frame scanning periods of image scanning to form a second grating for transmitting images in the even pixel columns of the display panel to the left eye of the user and transmitting the images in the odd pixel columns of the display panel to the right eye of the user; the liquid crystal grating panel being characterized in that the second electrode comprises two sub-electrodes which are arranged on different layers and separated from each other through an insulating layer and have a same shape and are vertically aligned with the first electrode and the third electrode respectively. an upper substrate; a lower substrate; liquid crystals disposed between the upper substrate and the lower substrate; an upper polarizer arranged on an internal surface or an external surface of the upper substrate; a first electrode arranged on the internal surface of the upper substrate, the first electrode including a plurality of strip electrodes arranged in parallel and at intervals; a third electrode arranged on a different layer from the first electrode and separated from the first electrode through an insulating layer, the third electrode including a plurality of strip electrodes arranged in parallel and at intervals, and the strip electrodes of the third electrode and the strip electrodes of the first electrode being offset relative to each other in a horizontal direction; and a second electrode arranged on an internal surface of the lower substrate; or a first electrode arranged on an internal surface of the lower substrate, the first electrode including a plurality of strip electrodes arranged in parallel and at intervals; a third electrode arranged on a different layer from the first electrode and separated from the first electrode through an insulating layer, the third electrode including a plurality of strip electrodes arranged in parallel and at intervals, and the strip electrodes of the third electrode and the strip electrodes of the first electrode being offset relative to each other in the horizontal direction; and a second electrode arranged on the internal surface of the upper substrate; wherein the first electrode is configured to generate an electric field with the second electrode at first frame scanning periods of image scanning to form a first grating for transmitting images in odd pixel columns of a display panel to the left eye of a user and transmitting images in even pixel columns of the display panel to the right eye of the user; the third electrode is configured to generate an electric field with the second electrode at second frame scanning periods of image scanning to form a second grating for transmitting images in the even pixel columns of the display panel to the left eye of the user and transmitting the images in the odd pixel columns of the display panel to the right eye of the user; the liquid crystal grating panel being characterized in that the second electrode comprises two sub-electrodes which are arranged on different layers and separated from each other through an insulating layer and have a same shape and are vertically aligned with the first electrode and the third electrode respectively.