Display-mode switching device, stereoscopic display device and display method thereof

A display-mode switching device, comprising:

• a first substrate having a first surface;
• a first electrode pattern disposed on the first substrate, and the first electrode pattern comprising a plurality of first electrode stripes parallel to each other;
• a second electrode pattern disposed on the first substrate, and the second electrode pattern comprising a plurality of second electrode stripes parallel to each other;
• a third electrode pattern disposed on the first substrate, and the third electrode pattern comprising a plurality of third electrode stripes parallel to each other;
• a fourth electrode pattern disposed on the first substrate, and the fourth electrode pattern comprising a plurality of fourth electrode stripes parallel to each other, wherein each first electrode stripe, each third electrode stripe, each second electrode stripe and each fourth electrode stripe are sequentially arranged along a direction;
• and
• a common electrode covering the first surface of the first substrate.