referring to fig2 , an embodiment of a three - dimensional light module primarily comprises a main body 100 and a plurality of leds l . the main body 100 comprises an outer surface 110 parallel to an xy plane , a plurality of openings 120 ′, and a plurality of bending portion 120 corresponding to the openings 120 ′. the bending portions 120 protrude from the outer surface 110 along a z direction , and an included angle θ is formed between the bending portions 120 and the outer surface 110 , 0 °& lt ; θ & lt ; 180 °. as shown in fig2 , the leds l are respectively disposed on the bending portions 120 , so that the included angle θ is formed between the bending portions 120 and the outer surface 110 . therefore , a three - dimensional light module is constructed to be a light source of a display or an illumination device . in this embodiment , the main body 100 comprises a substrate 30 and a flexible printed circuit 40 , as shown in fig3 and 4 . detailed structure and assembly sequences of the three - dimensional light module are disclosed as follows . the substrate 30 of fig3 is made of aluminum or other metal material , and it comprises a first surface 31 parallel to an xy plane , a plurality of first bending portions 32 , a first slots 32 ′, and connection portions 33 . the first slots 32 ′ are substantially u - shaped and formed on the first surface 31 by punching , so as to define the first bending portions 32 and the connection portions 33 . as shown in fig3 , the connection portion 33 is formed between opposite sides of the first slot 32 ′ as a bridge connecting the bending portions 32 and the first surface 31 , wherein width of the connection portion 33 along an x axis is smaller than that of the first bending portion 32 . the flexible printed circuit 40 of fig4 comprises a second surface 41 , a plurality of second bending portions 42 and second slots 42 ′. the second slots 42 ′ are substantially u - shaped and formed on the second surface 41 by punching , so as to define the second bending portions 42 and the connection portions 33 . in this embodiment , the second bending portions 42 has a hole 421 located adjacent to the second surface 41 and above the connection portion 33 . referring to fig5 , the flexible printed circuit 40 is adhered to the substrate 30 , and the first and second bending portions 32 and 42 overlap . as shown in fig5 , the connection portion 33 is exposed to the hole 421 and separated from the flexible printed circuit 40 , thus preventing the flexible printed circuit 40 from deform damages caused by bending the connection portion 33 . after fixing the flexible printed circuit 40 to the substrate 30 , the leds l are respectively mounted on the second bending portions 42 , as shown in fig6 . subsequently , the first and second bending portions 32 and 42 are bent toward a z direction to form the three - dimensional light module of fig2 . the bending portion 120 in fig2 is formed by the first and second bending portions 32 and 42 , and the outer surface 110 of the main body 100 in fig2 denotes the second surface 41 of the flexible printed circuit 40 . in fig2 , the bending portions 120 of the main body 100 are arranged in a matrix manner . in some embodiments , the bending portions 120 may also be arranged in a staggered manner , as shown in fig7 , to provide different visual effects . the invention provides a three - dimensional light module comprising a main body forming a plurality of bending portions . each of the bending portion protrudes from an outer surface of the main body at an included angle θ ( 0 °& lt ; θ & lt ; 180 °), so as to vary posture and lighting angle of the leds . as the light module does not require a large plastic base , it is suitable for mass production with less production time and costs when compared to conventional light modules . while the invention has been described by way of example and in terms of embodiment , it is to be understood that the invention is not limited thereto . to the contrary , it is intended to cover various modifications and similar arrangements ( as would be apparent to those skilled in the art ). therefore , the scope of the appended claims should be accorded the broadest interpretation to encompass all such modifications and similar arrangements .