Patent ID: 9551877
Date: 2017-01-24
CPC Classifications: G02B,H04N

Claim:
1. A grating, comprising a periodical cycle arrangement, wherein a first period of the grating is taken as the minimum cycle period and includes two rows of grating structures which have a same grating pitch and a same grating slit width; in the first period, the second row of grating structures are shift to the right with respect to a display panel by a distance “c” compared with the first row of grating structures, and the calculation method of “c” is: c=b, in which “b” refers to a width of a sub-pixel in a display panel corresponding to the grating; and the first row of grating structures of the i or in the first period, the second row of grating structures are shift to the left with respect to the display panel by the distance “c” compared with the first row of grating structures, and the calculation method of “c” c=b, in which “b” refers to the width of a sub-pixel in a display panel corresponding to the grating; and the first row of grating structures of the i wherein in the minimum cycle period, a height of the first row of grating structures is one-half a height of the second row of grating structures; or the height of the first row of grating structures is twice the height of the second row of grating structures.