JP2011181464A5 - - Google Patents

Description

An illuminating device according to an embodiment of the present invention is an illuminating device having a planar radiation surface, and includes a plurality of light sources arranged to face the planar radiation surface, and at least one of diffusion, refraction, and reflection. An optical member having optical characteristics and facing the light source; and a sheet-like support member having irregularities and supporting the optical member. The sheet-like support member is formed integrally with the optical member, and the optical member has different optical characteristics depending on the location.

Claims (19)

A lighting device having a planar radiation surface,
A plurality of light sources arranged opposite to the planar radiation surface;
An optical member having at least one optical property of diffusion, refraction, reflection, and facing the light source;
A sheet-like support member having irregularities and having optical transparency to support the optical member;
Bei to give a,
The sheet-like support member is formed integrally with the optical member, and the optical member has different optical characteristics depending on the location .   The lighting device according to claim 1, wherein the sheet-like support member has a uniform thickness over the entire surface and is disposed to face the entire surface of the optical member.   The lighting device according to claim 1, further comprising: a light source base that supports the light source, wherein the sheet-like support member is laminated on the light source base.   The illuminating device according to claim 1, further comprising a diffusion plate that forms a planar radiation surface, wherein the sheet-like support member is laminated on the diffusion plate.   The two sheet-like support members each having irregularities and supporting the optical member are provided, and these support members are arranged so as to be stacked on each other. The lighting device described.   The support member has upper and lower contact regions for contacting adjacent members adjacent to each other, and a side region that connects the upper and lower contact regions and faces the middle of the plurality of light sources. The lighting device according to claim 1, wherein: The lighting device according to claim 6, wherein a side surface region of the support member is inclined in a direction in which a normal line approaches the light source adjacent to the support member. The illumination device according to claim 6 , wherein the unevenness of the support member is repeatedly formed in the same or a multiple of the arrangement of the plurality of light sources. The illumination device according to claim 6 , wherein the unevenness of the support member is repeatedly formed at a smaller interval than the array of the plurality of light sources. The lighting device according to claim 6 , wherein the support member includes the side surface region in all cross sections. The support member has a cross section formed by a predetermined straight line or a closed curve, and a bending moment is formed extremely smaller than other cross sections, and the support member is bent by the predetermined straight line or the closed curved surface. The lighting device according to claim 6 . The lighting device according to claim 6 , wherein the support member has a convex portion formed in each region facing the plurality of light sources. The illumination device according to claim 6 , wherein the unevenness of the support member extends in parallel in the same direction. The lighting device according to claim 13, wherein an inclination angle of the side region is 20 to 70 degrees.   The lighting device according to claim 1, wherein the support member has light scattering properties.   2. The lighting device according to claim 1, wherein the support member has a substantial volume of 50% or less with respect to a volume covered with an uneven surface.   The lighting device according to claim 1, wherein the planar radiation surface is a curved surface. A liquid crystal display panel;
A polarizing filter provided on the back surface of the liquid crystal display panel;
The planar illumination device according to claim 13 , which is disposed to face the liquid crystal display panel and irradiates the liquid crystal display panel with light, and polarized light that is strengthened by unevenness of the support member passes through the polarization filter. A liquid crystal display device characterized by being oriented. A liquid crystal display panel;
The lighting device according to any one of claims 1 to 17 , wherein the lighting device is disposed to face the liquid crystal display panel and irradiates the liquid crystal display panel with light.
A liquid crystal display device.