One-dimension slit barrier for flat-panel 3D(three-dimension) display has some advantages of low cost and changing parameters easily and no need to focus

but it has a little lower brightness because of blocking light. Two-dimension lens array has the advantages of full parallax and natural depth perception

but its viewing-resolution and viewing-angle are limited. In order to combine the advantages of the above-mentioned two kinds of scheme

a new flat-panel 3D display scheme based on 2D(two-dimension) square hole barrier is proposed according to one-dimension slit barrier technology and two-dimension lens array scheme in the paper. The results of simulating experiment of Lighttools indicate that the image quality factor of 2D square hole barrier is slightly less than one-dimension slit barriers

but it has the advantages of one-dimension slit barrier technology and two-dimension lens array

and it is a new direction of development for flat-panel 3D display.