Lighting unit, lighting module, and liquid crystal display
AssigneeHitachi Displays, Ltd.
InventorsTsunenori Yamamoto, Ikuo Hiyama, Akitoyo Konno, Daisuke Kajita
Life of this patent
Estimating the term…
Abstract
There is provided a lighting unit whose area is implemented into a large area by assembling a plurality of lighting modules in a flat-surface-like manner. Moreover, a plurality of electrical connectors are positioned in each lighting module in such a manner that the electrical connectors face each side of each lighting module. Here, the plurality of electrical connectors are mutually connected to the plurality of lighting modules adjacent thereto.
Claims24
A lighting unit whose area is implemented into a large area by assembling a plurality of lighting modules in a flat-surface-like manner, wherein:
- a plurality of electrical connectors are positioned in each lighting module, each of said electrical connectors has a rectangular shape, one of said electrical connectors is positioned at each side of the lighting module, and said plurality of electrical connectors connect the lighting module with adjacent lighting modules;
- and
- light-source components in each lighting module are LED elements, power-to-brightness conversion efficiency of a LED element used in a lighting module positioned in a central portion of said large area of said lighting unit is higher than power-to-brightness conversion efficiency of a LED element used in a lighting module positioned in a peripheral portion of said large area of said lighting unit.
A lighting module for a lighting unit, comprising:
- a rectangular base;
- a plurality of light emitting elements disposed on a surface of said rectangular base;
- and
- a plurality of electrical connectors, the electrical connector being disposed one on each side of said base, for connecting said lighting module to other adjacent lighting modules to form the lighting unit;
- wherein light-source components in each lighting module are LED elements, said respective lighting modules being fabricated in a manner of being classified according to rank of power-to-brightness conversion efficiency of said LED elements, and, when said plurality of lighting modules are assembled thereby to be used as said lighting unit, said lighting modules are positioned whose ranks differ depending on respective locations of peripheral portion and central portion of said lighting unit.
Dependencies are inferred from the claim text.