| 摘要 |
A back light device having the heat diffusing sheet is provided to effectively absorb the heat transmitted to the reflection sheet, thereby preventing the damage of the reflection sheet due to the excessive heat. A light source irradiates the light with the predetermined wavelength. A reflection sheet(320) reflects the light irradiated from the light source to the front. A heat diffusion sheet(340) is located at the lower portion of the reflection sheet and absorbs the heat of the reflection sheet. The heat reflection sheet is made of graphite and adhered to the reflection sheet through an adhesive(350) including pigment of the gray group. The adhesive also includes acryl-group resin binder or titanium dioxide. Polyurethane and epoxy and the like are used as the binder. |
