Edge-light illuminating device, and liquid crystal display device

摘要

Provided is an edge-light illuminating device in which a deformation is prevented from occurring in a reflection sheet due to thermal expansion of the reflection sheet. An edge-light illuminating device (3) of the present invention is arranged to illuminate a liquid crystal display panel (2) from a back side of the panel, and includes a light guide plate (7), a light source (5) that faces an edge face (72) of the plate and is arranged to project light onto the edge face, a case (4) arranged to house the plate and the light source, and a reflection sheet (6) laid on a bottom face (41) of the case and sandwiched between the bottom face and a back face (71) of the plate housed in the case, wherein the reflection sheet includes a slot portion (61) disposed along a direction that the reflection sheet expands by heat generated by the light source.

主权项

1. An edge-light illuminating device for illuminating a liquid crystal display panel from a back side of the panel, the device comprising:
a light guide plate; a light source that faces an edge face of the light guide plate, and is arranged to project light onto the edge face; a case arranged to house the light guide plate and the light source; and a reflection sheet that is laid on a bottom face of the case, and sandwiched between the bottom face and a back face of the light guide plate housed in the case, wherein the reflection sheet comprises a plurality of slot portions or incision portions that is disposed along a direction that the reflection sheet expands by heat generated by the light source; the plurality of slot portions or incision portions is disposed along a side of the reflection sheet; and the plurality of slot portions or incision portions is disposed in a radial pattern.