... input 110-240v,output 6v-12v The design and Application of light panelBaesd on the optical principle of waveguide of propagation and originated ... in theliquid crystal displayt of laptop.it is the best way ... energy wastage,low efficiency,bad effect and thickness,ect.The size for light panel:1500mm*3000mm,1200mm*2400mm,1000mm* ...