Clamping method and display device

A display device, comprising:

• a display panel, and
• a backlight module, further comprising:
• a plastic frame, being a one-piece structure, and comprising a first clamping portion and a first border portion, wherein the first clamping portion has a fixed column disposed thereon, and the first border portion and the first clamping portion are formed with a certain angle and the first border portion has a latch hole;
• a backplate, comprising a second clamping portion and a second border portion, wherein the second clamping portion has a through hole formed thereon and disposed at a position corresponding to the fixed column, and the second border portion and the second clamping portion are formed with a certain angle, and the second border portion has a latch member disposed at a position corresponding to the latch hole;
• an optical film and a light guide plate, both being installed between the first clamping portion and the second clamping portion;
• wherein, the fixed column is passed through the through hole, and the part of the fixed column extending out from the through hole is hot melted to form a hot melt portion wrapped around the through hole, so that the first clamping portion and the second clamping portion clamp the optical film and the light guide plate securely, and the latch member is passed through the latch hole to define a latch connection.