A light guide panel, comprising: a top surface; a bottom surface configured to be opposite to the top surface; a light incidence surface configured to be disposed on one side of the top surface and the bottom surface; and an opposite surface configured to be disposed on another side of the top surface and the bottom surface and to be opposite to the light incidence surface, wherein: the bottom surface comprises a flat reference surface and a plurality of diffusion patterns including a plurality of recesses recessed from the reference surface and a plurality of protrusions (51b, 51c) protruding beyond the reference surface and formed along at least parts of circumferences of the plurality of recesses, respectively; a plurality of reference lines are defined, respectively passing through centers of the plurality of recesses and dividing the plurality of recesses in half into a plurality of first regions and a plurality of second regions; and the protrusions (51b, 51c) include first protrusions disposed in the first regions, respectively, and second protrusions disposed in the second regions, respectively; and a volume of the second protrusions is less than half a volume of the first protrusions, wherein each of the first regions is disposed at the same one side with respect to each of the reference lines, characterized in that each of the plurality of recesses is circular. a top surface; a bottom surface configured to be opposite to the top surface; a light incidence surface configured to be disposed on one side of the top surface and the bottom surface; and an opposite surface configured to be disposed on another side of the top surface and the bottom surface and to be opposite to the light incidence surface, wherein: the bottom surface comprises a flat reference surface and a plurality of diffusion patterns including a plurality of recesses recessed from the reference surface and a plurality of protrusions (51b, 51c) protruding beyond the reference surface and formed along at least parts of circumferences of the plurality of recesses, respectively; a plurality of reference lines are defined, respectively passing through centers of the plurality of recesses and dividing the plurality of recesses in half into a plurality of first regions and a plurality of second regions; and the protrusions (51b, 51c) include first protrusions disposed in the first regions, respectively, and second protrusions disposed in the second regions, respectively; and a volume of the second protrusions is less than half a volume of the first protrusions, wherein each of the first regions is disposed at the same one side with respect to each of the reference lines, characterized in that each of the plurality of recesses is circular. the bottom surface comprises a flat reference surface and a plurality of diffusion patterns including a plurality of recesses recessed from the reference surface and a plurality of protrusions (51b, 51c) protruding beyond the reference surface and formed along at least parts of circumferences of the plurality of recesses, respectively; a plurality of reference lines are defined, respectively passing through centers of the plurality of recesses and dividing the plurality of recesses in half into a plurality of first regions and a plurality of second regions; and the protrusions (51b, 51c) include first protrusions disposed in the first regions, respectively, and second protrusions disposed in the second regions, respectively; and a volume of the second protrusions is less than half a volume of the first protrusions, wherein each of the first regions is disposed at the same one side with respect to each of the reference lines, characterized in that each of the plurality of recesses is circular.