Positioning Structure for Positioning Optical Film and Frame and Related Backlight Module and Liquid Crystal Display

A backlight module, comprising:

• a back frame;
• a light guiding plate, installed in the back frame;
• a plastic frame, comprising a side frame having an assembling hole, the plastic frame placed on the light guiding plate;
• a magnetic member, installed inside the assembling hole;
• an optical film, placing on the side frame and comprising a protruded ear, the protruded ear having a positioning hole;
• and
• an attracted member, comprising a compression part and a positioning pillar, wherein the positioning pillar is connected to a lower surface of the compression part and gets inside the assembling hole through the positioning hole such that the positioning pillar is connected to an attraction hole of the magnetic member due to a magnetic effect to make the compression part compress and fix the optical film on the side frame.

A liquid crystal display, comprising:

• a backlight module, a display panel placed on the backlight module, a bezel placed on the display panel, wherein the backlight module comprises:
• a back frame;
• a light guiding plate, installed in the back frame;
• a plastic frame, comprising a side frame having an assembling hole, the plastic frame placed on the light guiding plate;
• a magnetic member, installed inside the assembling hole;
• an optical film, placing on the side frame and comprising a protruded ear, the protruded ear having a positioning hole;
• and
• an attracted member, comprising a compression part and a positioning pillar, wherein the positioning pillar is connected to a lower surface of the compression part and gets inside the assembling hole through the positioning hole such that the positioning pillar is connected to an attraction hole of the magnetic member due to a magnetic effect to make the compression part compress and fix the optical film on the side frame.