Backlight assembly and liquid crystal display device using the same

A backlight assembly comprising:

• a first light guiding member comprising i) a first light incident face, ii) a first light exiting face, and iii) a first light reflective face including a first light reflective face portion and a second light reflective face portion connected to the first light reflective face portion, a first portion between the first light exiting face and the first light reflective face portion having a first thickness, and a second portion between the first light exiting face and the second light reflective face portion having a second thickness thinner than the first thickness;
• a second light guiding member overlapped with the first light guiding member and comprising i) a second light incident face, ii) a second light exiting face, and iii) a second light reflective face including a third light reflective face portion and a fourth light reflective face portion connected with the third light reflective face portion, a third portion between the second light exiting face and the third light reflective face portion having a third thickness, and a fourth portion between the second light exiting face and the fourth light reflective face portion having a fourth thickness thinner than the third thickness;
• a light reflective member having a first reflection face arranged at the second light reflective face portion and a second reflection face arranged at the fourth light reflective face portion;
• and
• a light source for supplying a light to the first and second light incident faces.

A liquid crystal display device comprising:

• a first light guiding member including i) a first light incident face onto which a light is supplied, ii) a first light exiting face connected to the first light incident face, iii) a first light reflective face portion connected to the first light incident face, a first portion between the first light exiting face and the first light reflective face portion having a first thickness and iv) a second light reflective face portion connected to the first light reflective face portion, a second portion between the first light exiting face and the second light reflective face portion having a second thickness thinner than the first thickness;
• a second light guiding member being overlapped with the first light guiding member and including i) a second light incident face corresponding to the first light incident face, and onto the second light incident face the light being supplied, ii) a second light reflective face, a portion of the second light reflective face being closely in contact with the first light reflective face portion, and a remaining portion of the second light reflective face being spaced apart from the second light reflective face portion by a gap corresponding to a difference between the first thickness and the second thickness, and iii) a second light exiting face connected to the second light incident face and facing the second light reflective face, and a third portion between the second light exiting face and the second light reflective face having a third thickness;
• a light reflective member interposed between the second light reflective face and the second light reflective face portion;
• a light source for supplying the light to the first and second light incident faces;
• a first display panel facing the first light exiting face;
• a second display panel facing the second light exiting face;
• and
• a receiving container for fixing the first display panel and the second display panel.