Bonding device and bonding method

A bonding device, comprising:

• a supporting assembly, comprising a first supporting body and a second supporting body arranged side-by-side in a first direction, at least one of the first supporting body and the second supporting body configured to be movable in the first direction, the supporting assembly having an upper surface facing a flexible substrate to be bonded, the upper surface matching an inner surface of the flexible substrate;
• and
• a stretching assembly, comprising a carrier film and a plurality of driving elements, a central area of the carrier film configured to be attached to the inner surface of the flexible substrate, at least two first driving elements of the plurality of driving elements arranged opposite to each other in the first direction, at least two driving elements of the plurality of driving elements arranged opposite to each other in a second direction, the plurality of driving elements all connected to a peripheral portion of the carrier film, and the plurality of driving elements configured to stretch the peripheral portion of the carrier film and drive the inner surface of the flexible substrate to align with the upper surface of the supporting assembly;
• the supporting assembly comprises an elastic supporting body, the elastic supporting body comprises a main supporting body and at least four fixing parts connected to the main supporting body, the first supporting body and the second supporting body support the flexible substrate through the main supporting body;
• and
• the bonding device further comprises a base, the base is configured to support the supporting assembly, the at least four fixing parts are connected to the base, and two fixing parts of the at least four fixing parts are disposed at opposite sides of the first supporting body and the second supporting body in the first direction, and remaining fixing parts of the at least four fixing parts are disposed at opposite sides of the first supporting body and the second supporting body in the second direction.