LIQUID CRYSTAL DISPLAY DEVICE

摘要

A sealed state of a lamp chamber and liquid crystal panel chamber sandwiching a light diffusion plate inside a liquid crystal display device is released so that the light diffusion plate is prevented from being deformed. The liquid crystal display device comprises a sealed portion (1) provided with a reflection sheet (6) reflecting light from a lamp (5) and a light diffusion plate (2) and/or an optical sheet (3) or its kind provided in the shield portion (1). Air vent holes (2a, 3a) are provided at at least one place in the peripheral edge portion of the light diffusion plate (2) and/or the optical sheet (3) or its kind. An air vent hole (1a) communicating with air is provided in the shield portion (1) at the position corresponding to the air vent holes (2a, 3a). The lamp chamber (30) where a lamp is received and the liquid crystal chamber (31) where a liquid crystal panel is installed are in communication with each other through the air vent holes (2a, 3a) of the light diffusion plate (2) and/or the optical sheet (3) or its kind and through the air vent hole (1a) of the shield portion (1) with the light diffusion plate and/or the optical sheet or its kind sandwiched between both chambers.