Touch display panel, touch display device and display device

A touch display device, comprising:

• a touch display panel comprising:
• a display panel including a first substrate and a second substrate disposed opposite to the first substrate along a first direction;
• a touch panel disposed over the display panel along the first direction;
• an optical film disposed between the second substrate and the touch panel along the first direction;
• and
• an adhesive layer disposed on the outside of the optical film and adhering to the second substrate and the touch panel;
• and
• a backlight module disposed on the side of the display panel away from the touch panel along the first direction.

A display device, comprising:

• a display panel including a first substrate and a second substrate disposed opposite to the first substrate along a first direction;
• a cover plate disposed over the display panel along the first direction;
• an optical film disposed between the second substrate and the cover plate along the first direction;
• and
• an adhesive layer disposed on the outside of the optical film and adhering to the second substrate and the cover plate.