A light guide device and a liquid crystal display module and a liquid crystal display device having the light-guide device that can minimize the flowing of a light guide plate received in a mold frame by improving the structure of the light guide plate of the liquid crystal display device. A light guide device for receiving a light from a lamp unit and guiding the light to a display unit for displaying an image has a catching jaw is formed by cutting off both corner portion of a first end portion to which the light from the lamp unit is inputted. The width of the first end portion including the catching jaw is wider than the width of a second end portion opposite to the first end portion. Therefore, the catching amount of a catching boss integrally formed with the mold frame and the catching jaw of the light guide plate is remarkably increased and the light guide plate is prevented from being flowed towards the lamp even when exterior impacts are applied to the liquid crystal display device.
CROSS REFERENCE TO RELATED APPLICATIONS
This application is a continuation of Applicants' U.S. application Ser. No. 09/953,200 filed on Sep. 17, 2001 now U.S. Pat. No. 6,595,651.
The present invention relates to an LCD module and an LCD device that minimizes movement of a light guide plate. In an embodiment of the present invention, the light guide plate has catching jaws and projections. The catching jaws are formed by cutting at least one corner of an end portion of the light guide plate. The projections extend outwardly from sidewalls of the catching jaws, which have a thinner thickness than the catching jaws. A mold frame receives the light guide plate and the lamp unit and has catching bosses and recesses. The catching bosses are formed at positions corresponding to the catching jaws on a bottom surface of the mold frame to engage with the catching jaws to fix the light guide plate in the mold frame. The recesses are formed at respective positions corresponding to the projections at sidewalls of the mold frame to receive the projections.
A backlight assembly includes a frame, a light source, and at least one optical film. The light source is disposed on the frame. The optical film has at least one positioning flange. The frame has a first, a second and a third member to form a polygonal accommodating area and is adapted to receive the optical film. First and second containing regions are positioned adjacent to a place which the third member is connected to the first member and the third member is connected to the second member, respectively. The first containing region projects into the first and third members, and the second containing region projects into the second and third members, so that the first containing region and the second containing region are adapted to receive the shaped positioning flange of the optical film.
