Backlight device, liquid crystal display device, and electronic apparatus

摘要

A backlight device illuminates a transmissive liquid crystal panel from a rear surface thereof, and includes light source substrates, a reflecting sheet, a diffusing-guiding plate, and an optical-function-sheet layered body. The substrates have light-emitting elements for illuminating illumination light. The reflecting sheet has the substrates mounted to one surface thereof, has an opening formed in correspondence with the light-emitting elements, allows the light-emitting elements to be exposed at another surface of the reflecting sheet from the opening, and reflects the illumination light from the light-emitting elements by the another surface. The plate faces the another surface side of the sheet at a predetermined interval from the reflecting sheet, and diffuses in a layer thereof the illumination light incident from the reflecting sheet. The layered body is combined to the plate, includes laminated optical function sheets, and guides the illumination light to the panel.

主权项

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.