A liquid crystal display device module has a structure for preventing wrinkles
in the reflective sheet by providing a means for supporting a light guide plate.
In one embodiment, the means includes a supporting member positioned between a
supporting frame and a light guide plate. The thickness of the supporting member
is larger than that of the reflective sheet, and thus the reflective sheet is prevented
from being affected by internal and external heat. Moreover, in one embodiment
the supporting frame has a step portion in a peripheral area. The step portion
has a step that has a height being larger than the reflective sheet, and thus the
reflective sheet is prevented from being affected by internal and external heat,
too. Accordingly, wrinkles do not occur in the reflective sheet, and the quality
of the LCD module is raised, and thus a liquid crystal display device having good
display characteristics can be attained.