Vehicle-mounted display device and state switching method therefor

A vehicle-mounted display device, comprising:

• a flexible display portion;
• a first motion portion and a second motion portion, wherein the first motion portion and the second motion portion are respectively connected to two sides of the flexible display portion, and a plane where the first motion portion is located intersects with a plane where the second motion portion is located;
• a tensioning structure arranged between the first motion portion and the second motion portion;
• and
• a driving device configured to drive the first motion portion and the second motion portion to move relatively;
• wherein the driving device is configured to:
• in a first driving state, drive the first motion portion to move prior to the second motion portion, so that the first motion portion drives the second motion portion to move through the flexible display portion;
• and
• in a second driving state, drive the second motion portion to move prior to the first motion portion through the tensioning structure, so that the second motion portion drives the first motion portion to move through the flexible display portion.