Keyswitch structure

A keyswitch structure, comprising:

• a keycap having a lower surface and an engaging portion protruding from the lower surface, the engaging portion having an engaging groove, the keycap moving to a lower position when the keycap is pressed;
• a linking bar, a portion of the linking bar received in the engaging groove to couple the linking bar with the engaging portion, a distal end of the engaging portion being lower than the linking bar when the keycap moves to the lower position;
• a baseplate disposed below the keycap, the baseplate having a recessed space corresponding to the engaging portion;
• and
• a buffer film disposed on the baseplate, the buffer film substantially extending over the recessed space and having a deformable portion corresponding to the recessed space,
• wherein when the keycap moves toward the baseplate to the lower position, the distal end of the engaging portion pushes the deformable portion to make the deformable portion extend into the recessed space.