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US 9,068,730 B2Granted
Edge light backlight unit and liquid crystal display device including same
AssigneeSharp Kabushiki Kaisha
InventorAkira Gotou
Life of this patent
Estimating the term…
Abstract
In order to accurately illuminate a lighting target with planar light having few nonuniformities, a backlight (2) is provided with a light guide plate (5) having multiple leg members (531) protruding from an attachment part (53), which is the surface opposite of an emission part (52), and a chassis (4) having holding units (411) into which the leg members (531) are inserted.
Claims20
A backlight unit comprising:
- a chassis;
- a light source that is mounted in the chassis;
- and
- a rectangular parallelepiped light guide plate that is mounted in the chassis, receives light from the light source via a side end surface, and outputs the light as planar light from a front output portion which is a surface of the light guide plate perpendicular to the side end surface;
- wherein
- the light guide plate includes a plurality of leg members that protrude from a mounted portion that is a surface opposite to the output portion;
- the chassis includes holding portions into which the leg members are inserted;
- at least one set of the plurality of leg members is disposed at symmetrical positions with respect to a center of the mounted portion;
- and
- a cross-sectional shape of each one of the at least one set of the plurality of leg members taken along a surface parallel or substantially parallel to the mounted portion is not point-symmetrical about a center of the cross-sectional shape.
7 more elements
A backlight unit comprising:
- a chassis;
- a light source that is mounted in the chassis;
- and
- a rectangular parallelepiped light guide plate that is mounted in the chassis, receives light from the light source via a side end surface, and outputs the light as planar light from a front output portion which is a surface of the light guide plate perpendicular to the side end surface;
- wherein
- the light guide plate includes a plurality of leg members that protrude from a mounted portion that is a surface opposite to the output portion, the plurality of leg members including two or more kinds of leg members that have cross-sectional shapes, taken along a surface parallel or substantially parallel to the mounted portion, which are different from each other;
- and
- the chassis includes holding portions into which the leg members are inserted.
5 more elements
Dependencies are inferred from the claim text.