LIGHT GUIDE PLATE MOLD
A light guide plate mold includes a base, a first side plate, a second side plate, a third side plate, a fourth side plate, an intermediate baffle defining a sprue, a group of replaceable mold blocks and an optical micro-structure insert. One of the replaceable mold block includes a recess, the optical micro-structure insert is received in the recess. The base, the first side plate, the second side plate, the third side plate, the fourth side plate, the intermediate baffle and the optical micro-structure insert together are enclosed to form a molding cavity to mold a light guide plate. The optical micro-structure insert is used for molding the microstructure of an incident surface of the light guide plate.
1 . A light guide plate mold, comprising:
a base comprising a first side surface, a second side surface opposite to the first side surface, a third side surface connecting the first side surface with the second side surface; and a fourth side surface opposite to the third side surface;
a first side plate attached to the first side surface;
a second side plate attached to the second side surface;
an intermediate baffle attached to the third side surface and defining a sprue;
a third side plate positioned in a corner formed by the second plate and the intermediate baffle;
a fourth plate positioned in a corner formed by the first side plate and the intermediate baffle;
a plurality of replaceable mold blocks, each of the replaceable mold blocks defining a recess, each of the replaceable mold blocks being selectively attachable to the fourth side surface; and
an optical micro-structure insert being receivable in the recess of each of the replaceable mold blocks, the optical micro-structure insert comprising a fixing portion and a molding portion connected with the fixing portion, the molding portion defining a plurality of grooves; wherein
the base, the first side plate, the second side plate, the third side plate, the fourth side plate, the intermediate baffle and the optical micro-structure insert are configured for cooperatively forming a molding cavity for molding a light guide plate, the sprue being in communication with the molding cavity, the grooves configured for forming microstructures on a light incident surface of the light guide plate.
2 . The light guide plate mold of claim 1 , wherein the receses is substantially T-shaped.
3 . The light guide plate mold of claim 1 , wherein the material of the fixing portion is stainless steel.
4 . The light guide plate mold of claim 1 , wherein the material of the molding portion is selected from the group consisting of copper, gold, nickel and any combination thereof.
5 . The light guide plate mold of claim 1 , wherein the base includes a top surface and a bottom surface, the top surface is parallel to the bottom surface and the top surface is a bottom surface of the molding cavity.
6 . The light guide plate mold of claim 1 , wherein the base includes a top surface and a bottom surface opposite to the top surface, the top surface is obliquely oriented relative to the bottom surface and the top surface is a bottom surface of the molding cavity.
7 . The light guide plate mold of claim 1 , wherein each of the grooves is semi-cylindrical.
8 . The light guide plate mold of claim 1 , wherein each of the grooves is a V-shaped groove.
9 . The light guide plate mold of claim 1 , wherein each of the grooves is U-shaped groove.
10 . The light guide plate mold of claim 1 , wherein a depth of each of the groove is less than a width of the molding portion.
11 . The light guide plate mold of claim 1 , wherein a thickness of the optical micro-structure insert is equal to a depth of the molding cavity.
12 . The light guide plate mold of claim 1 , wherein the size and shape of the first side plate is the same as those of the second side plate.
13 . The light guide plate mold of claim 1 , wherein the size and shape of the third side plate is the same as those of the fourth side plate.