Surface light source apparatus and liquid crystal display apparatus

摘要

In a surface light source apparatus 1 for irradiating light in a planar form by arranging a plurality of tubular light sources 2 at high density in the middle of a screen so that brightness at the middle of the screen is high, each tubular light source 2 positioned in rows at topmost and bottommost edges is arranged to be closer toward screen corner sections in a plan view so as to compensate for lack of brightness at the screen corner sections in a plan view. In this manner, each tubular light source 2 is arranged by placing each tubular light source 2 in the rows at the topmost and bottommost edges closer in a row direction toward each corner section B of the reflection sheet 5. Thereby, brightness at the middle of a screen is maintained and enhanced, and display quality at corner sections of the screen is improved.

主权项

1. A surface light source apparatus for irradiating a light in a planar form by arranging a plurality of oblong light sources at a high density in a middle section of a screen so that brightness at the middle section of the screen is high, wherein
the plurality of oblong light sources have oblong light sources positioned at the middle section and oblong light sources positioned in at least one row at topmost, bottommost, leftmost, and rightmost edges or in an outermost periphery, the oblong light sources are arranged by placing an end section of the oblong light sources positioned in the at least one row at topmost, bottommost, leftmost, and rightmost edges or in the outermost periphery closer toward a screen corner section in a plan view so as to compensate for a lack of brightness at the screen corner section in a plan view; and wherein the oblong light sources positioned in the at least one row at the topmost, bottommost, leftmost, and rightmost edges or in the outermost periphery are divided into at least two oblong light sources, and each light source on the edge sections, which are not edge sections of the at least two divided oblong light sources that are adjacent to each other, is placed closer toward the screen corner section in a plan view, from a longitudinally or transversely aligned position of light sources on the end sections of the oblong light sources positioned at the middle section which correspond to the light sources of the end sections, to arrange the two oblong light sources.