| 摘要 |
<p>Provided are a film locating structure (200) and a backlight module (100) thereof. The film locating structure (200) is used for the locating of a film (210), and the film (210) has at least one locating hole (212) thereon. The film locating structure (200) also comprises a locating frame (220) having a first inclined surface (242) facing the film (210) and a sliding block (250). The sliding block (250) is located between the locating frame (220) and the film (210), and has a bottom surface (251) contacting the film (210) and a second inclined surface (252) correspondingly contacting the first inclined surface (242), the inclination of the second inclined surface (252) gradually rises towards the outer edge direction of the film (210), the outer edge of the sliding block (250) is provided with a locating protrusion (253) corresponding to the locating hole (212), and the locating protrusion (253) is penetrated in the locating hole (212). By use of mutual press of the inclined surface (242) of the locating frame (220) and the inclined surface (252) of the sliding block (250) in the film locating structure (200), when the sliding block (250) moves to the outside of the film (210), the locating protrusion (253) hangs up the locating hole (212), thereby applying an outward tension stress to the film (210) to tension the film (210). Also provided is another connection structure of a sliding block and a locating frame. The present invention uses the sliding block (250) to apply a tension stress to the film (210), which is used to adjust the expansion and contraction amount of the film (210) generated due to the temperature change to eliminate the problem of warpage of the film (210).</p> |
