Patent ID: 9316862
Filing Date: 2016-04-19
CPC Classification: G02F

Claim Text:
1. A backlight device that illuminates a transmissive liquid crystal panel from a rear surface side thereof, the backlight device comprising: a plurality of light source substrates having a plurality of light-emitting elements for emitting illumination light; a reflecting sheet having the plurality of light source substrates mounted directly to one surface of the reflecting sheet, the reflecting sheet having an opening formed at a location in correspondence with the light-emitting elements mounted to the light source substrates, the reflecting sheet allowing the light-emitting elements to be exposed at another surface of the reflecting sheet from the opening and reflecting the illumination light from the light-emitting elements by said another surface; a diffusing-guiding plate facing said another surface of the reflecting sheet at a predetermined interval from the reflecting sheet, the diffusing-guiding plate diffusing in a layer thereof the illumination light incident from the reflecting sheet; and an optical-function-sheet layered body that is combined with the diffusing-guiding plate, that includes a plurality of laminated optical function sheets, and that guides the illumination light to the transmissive liquid crystal panel; wherein a wiring pattern is disposed in direct contact with surfaces of the light source substrates at a first side of the light source substrates that is furthest from the light-emitting elements, and a heat-dissipating pattern is disposed in direct contact with surfaces of the light source substrates at a second side of the light source substrates, the second side being furthest from the wiring pattern.