| 摘要 |
A backlight for a liquid crystal display including a plurality of liquid crystal display elements arranged in a matrix of n rows and m columns, in which optical transmittance of each of the liquid crystal display elements is changed, thereby switching an image every one frame period includes a plurality of electron-emitting elements and a phosphor. Each electron-emitting element is disposed to face a liquid crystal display element group including a plurality of adjacent liquid crystal display elements with the phosphor therebetween. In a sub-frame period divided from one frame period, each electron-emitting element accumulates and emits an amount of electrons according to the optical transmittance of each of the plurality of liquid crystal display elements facing each of the electron-emitting elements. In one frame period, the phosphor emits an amount of light which corresponds to the optical transmittance of the liquid crystal display elements a plurality of times.
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