Laminating apparatus, flexible display panel and assembling method thereof, flexible display apparatus

A laminating apparatus for laminating an object to be laminated, wherein the laminating apparatus comprises:

• a rigid substrate;
• and
• a jig provided on a side of the rigid substrate and in contact therewith, the jig being of an elastic material, and a surface of the jig away from the rigid substrate being a first surface;
• wherein
• the laminating apparatus has a bent section, and a portion of the first surface located in the bent section includes at least one segment of cambered surface;
• a non-obtuse angle between a tangent of any one of the at least one segment of cambered surface and a horizontal direction increases gradually from an end of the segment of cambered surface to an opposite end of the segment of cambered surface;
• a horizontal plane at any point in a surface of the rigid substrate away from the jig is a first reference plane, and a contact interface between the rigid substrate and the jig is a second surface;
• for any one of the at least one segment of cambered surface, a distance between the second surface and the first reference plane increases as the non-obtuse angle between the tangent of the first surface and the horizontal direction increases;
• and
• a portion of the second surface located in the bent section is in a shape of multiple steps;
• and a thickness of the jig corresponding to a step is:
• L
• ⁢
• i
• =
• H
• ·
• E
• ·
• Di
• ·
• cos
• ⁢
• α
• ⁢
• i
• F
• ⁢
• i
• ;
• wherein Fi represents a force exerted by the laminating apparatus on the object in the normal direction of the first surface and meets 0.3 Mpa≤Fi≤0.9 Mpa;
• H represents a displacement of a surface of the object proximate to the jig relative to a surface of the object away from the jig;
• E represents an elastic modulus of the jig;
• Di represents an area of an orthographic projection of a surface of the step on a second reference plane, the surface of the step being perpendicular to the direction in which the rigid substrate exerts the force on the jig, and the second reference plane being perpendicular to the direction in which rigid substrate exerts the force on the jig;
• and αi represents an angle between the direction in which the rigid substrate exerts the force on the jig and the normal direction of the first surface, and meets 0°≤αi≤90°.