Patent ID: 7578609

Claim:
A backlight frame structure comprising: a frame having a first member that extends in an x-direction, a second member, and a third member that extends in a y-direction connected to the first member and the second member to form a polygonal accommodating area, the polygonal accommodating area being parallel to the x-direction and the y-direction and perpendicular to a z-direction, the x-direction, the y-direction and the z-direction being perpendicular to each other, the polygonal accommodating area being adapted to receive at least one optical film of a corresponding shape, said frame having at least a first containing region that faces the polygonal accommodating area and that is positioned adjacent to a place which the third member is connected to the first member, the first containing region projecting into the first and third members, said frame also having a second containing region that faces the polygonal accommodating area and that is positioned adjacent to a place where the third member is connected to the second member, the second containing region projecting into the second and third members, the first containing region and the second containing region being adapted to receive a respective shaped flange of the optical film, the first and second containing regions each further having an overhanging portion that extends over at least a portion of the respective first and second flanges, so that the flanges received therein are restricted from moving in the z-direction and at least one of the x-direction and the y-direction.