Patent ID: 8176912

Claim:
A solar cell module comprising: a solar cell array substrate on which a plurality of solar cells are arranged; and a light-condensing device array substrate located on the solar cell array substrate; wherein the light condensing device array substrate includes a plurality of unit light-condensing devices, wherein each unit light-condensing device includes: a central block; a pair of vertical diffraction grating blocks respectively located left and right of the central block, and comprising parallel vertical diffraction gratings in the form of lines extending in the direction of a vertical axis; and a pair of horizontal diffraction grating blocks respectively located above and below the central block, and comprising parallel horizontal diffraction gratings in the form of lines extending in the direction of a horizontal axis, wherein a pair of the plurality of unit light-condensing devices adjacent in the horizontal axis share the vertical diffraction grating block, and a pair of the plurality of unit light-condensing devices adjacent in the vertical axis share the horizontal diffraction grating block, and wherein a center of each solar cell is aligned with the central block of a corresponding one of the unit light-condensing devices.