LIGHT GUIDE PLATE AND FABRICATION METHOD THEREOF, EXTRUSION EQUIPMENT, BACKLIGHT MODULE AND DISPLAY DEVICE

摘要

The present invention relates to a light guide plate (LGP) capable of bidirectional focusing via a bidirectional micro-transmissive layer, a fabrication method of the LGP, an extrusion equipment, a backlight module and a display device. The LGP comprises a LGP substrate, the LGP substrate comprises at least one incident surface for receiving a light beam and one outgoing surface connected to the incident surface, a bidirectional micro-transmissive layer is provided in the LGP substrate, the bidirectional micro-transmissive layer comprises a plurality of micro-transmissive points having biconvex surfaces. According to the principle that convex lens converges light, the design of micro-transmissive points having biconvex surfaces causes several scattered light beams having different directions that enter the micro-transmissive points to be converged, which effectively improves the brightness of the outgoing surface of the LGP, thereby improving the brightness and definition of images displayed in the liquid crystal panel.

主权项

1. A fabrication method of a light guide plate, wherein the light guide plate comprising a light guide plate (LGP) substrate, the LGP substrate comprises at least one incident surface for receiving a light beam and one outgoing surface connected to the at least one incident surface, wherein a bidirectional micro-transmissive layer is provided in the LGP substrate, the bidirectional micro-transmissive layer comprises a plurality of micro-transmissive points having biconvex surfaces, the fabrication method comprises the following steps:
S1: loading light guide material into a heating device; S2: heating the light guide material into molten state by the heating device; S3: extruding the molten light guide material into molten light guide raw plate by an extrusion equipment; S4: injecting bubbles into the molten light guide raw plate by controlling a bubbler during the process of extruding the molten light guide material into the molten light guide raw plate; and S5: shaping to form the light guide plate after extruding the molten light guide raw plate out of a mould mouth.