[0026] Figure 3A Is a three-dimensional schematic diagram of a film capable of improving brightness according to an embodiment of the present invention; Figure 3B For along Figure 3A A schematic side view of the film that can improve the brightness drawn in the X direction; Figure 3C For along Figure 3A A schematic side view of a film that can improve brightness drawn in the Y direction. Please also refer to Figure 3A , 3B And 3C, the brightness-enhancing film 200 mainly includes a substrate 210 and a brightness-enhancing structure 220 disposed on the substrate 210. The surface of the structure 220 that can improve the brightness has a plurality of first grooves 222 arranged along a first direction (that is, Y axis) and a plurality of second grooves 224 arranged along a second direction (that is, X axis). The arrangement of the first grooves 222 and the second grooves 224 is perpendicular to each other to define a plurality of inclined mirror units 226 arranged in an array pattern. In this embodiment, the first groove 222 and the second groove 224 are both V-shaped grooves. Therefore, each bevel mirror unit 226 has a pyramid shape. After the light passes through the substrate 210, the light can be condensed by the refraction of the inclined mirror units 226. In this embodiment, each bevel mirror unit 226 is substantially a pyramid-shaped structure.
[0027] by Figure 3B and 3C It can be seen that in the structure 220 that can improve the brightness, the first groove 222 has a first groove depth d1, and the second groove 224 has a second groove depth d2, and the first groove depth d1 is not equal to the second groove depth d1. The groove depth d2. In this embodiment, the first groove depth d1 is greater than the second groove depth d2. In addition, the relationship between the depth d1 of the first groove and the depth d2 of the second groove needs to satisfy the following formula, so that the formed bevel mirror unit 226 has a better condensing effect:
[0028] The second groove depth d2 <3×the second groove depth d2
[0029] Hereinafter, the materials used in the substrate 210 and the structure 220 that can improve the brightness will be further described. The material of the substrate 210 may be polyethylene terephthalate (PET), polycarbonate (PC), or polymethyl methacrylate (PMMA). The brightness-enhancing structure 220 on the substrate 210 may be composed of a high-molecular polymer and a plurality of brightness-enhancing particles distributed in the high-molecular polymer. In the embodiment of the present invention, the high molecular polymer may be epoxy, and the particles that can improve brightness may be one or several metal materials, one or several non-metal materials or the aforementioned metals It is composed of a mixture of materials and non-metallic materials. Furthermore, the aforementioned metal material is selected from germanium, tin, lead, aluminum, silicon, zinc, copper, silver, gold, nickel, palladium, platinum, cobalt, rhodium, iron, nail, manganese, chromium, molybdenum, One or any combination of titanium, zirconium, strontium, barium and their alloys; non-metallic materials are selected from the group consisting of boron, carbon, nitrogen, oxygen, phosphorus, sulfur and their oxides or Any combination of them. In addition, the diameter of the particles that can improve brightness should preferably be less than 80 μm to achieve a better brightness enhancement effect. The brightness-increasing particles in the brightness-increasing structure 220 not only have the effect of increasing light, but also have the effect of light diffusion. The user can adjust the brightness-increasing structure 220 according to different requirements. The components of the brightness particles can achieve the brightness enhancement and light diffusion effects required by the brightness enhancement film 200.
[0030]The brightness-enhancing film 200 can be manufactured in the following ways: first, a substrate 210 is provided; then, a gel-like UV curing glue mixed with particles that can improve brightness is coated on a On the mold, the mold has the geometric shape of the structure 220 that can increase the brightness, and it is pasted on the surface of the substrate 210; finally, the ultraviolet light-type hardening resin is irradiated with ultraviolet light to make it solidify, and it is completed. Fabrication of the film 200 to improve brightness. Of course, the brightness-improving film 200 can also be manufactured in other ways, and the present invention does not impose any limitation on its manufacturing method.
[0031] Figure 4 ~ Figure 8 Each is a three-dimensional schematic diagram of a film capable of improving brightness according to another embodiment of the present invention. First, please refer to Figure 4 , The structure of the brightness-improving film 200a is roughly the same as Figure 3A The brightness-enhancing film 200 shown in the two is the same, but the difference between the two is that the surface of the brightness-enhancing structure 220a also has a plurality of first grooves 222 arranged along the Y axis, and has a plurality of first grooves 222 along the Y axis. The second grooves 224a and 224b are arranged along the X axis. The depth of the first groove 222 is also the first groove depth d1, and the depth of part of the second groove 224a is also the second groove depth d2. However, there are other parts of the second groove 224b that have the depth d2. A groove depth d1. The second grooves 224a with the second groove depth d2 and the second grooves 224b with the first groove depth d1 are arranged alternately.
[0032] Please refer to Figure 5 , The structure of the brightness-improving film 200b is roughly the same as Figure 4 The brightness-enhancing film 200a shown in the two is the same, but the difference between the two is: in the brightness-enhancing structure 220b, two adjacent second grooves 224b with a first groove depth d1 are arranged with Two second grooves 224a having a second groove depth d2.
[0033] Figure 6 The structure of the brightness-improving film 200c shown in Figure 4 The brightness-improving film 200a shown in is the same, but in Figure 6 In the brightness-improving structure 220c, two adjacent second grooves 224b with a first groove depth d1 are configured with three second grooves 224a with a second groove depth d2.
[0034] Please refer to Figure 7 , The structure of this brightness-improving film 200d is roughly the same as Figure 3A The brightness-enhancing film 200 shown in the same, but the difference between the two is: the surface of the brightness-enhancing structure 220d has a plurality of first grooves 222a, 222b arranged along the Y axis, and has a plurality of edges The second grooves 224 are arranged along the X axis. Wherein, the depth of part of the first groove 222a is also the first groove depth d1, but the depth of another part of the first groove 222b is the second groove depth d2. In addition, the first grooves 222a with the first groove depth d1 and the first grooves 222b with the second groove depth d2 are arranged alternately.
[0035] Figure 8 The structure of the brightness-improving film 200e shown in Figure 7 The brightness-improving film shown in 200d is the same, but in Figure 8 In addition to the first grooves 222a and 220b arranged along the Y axis in the structure 220e that can improve the brightness, the structure 220e that can improve the brightness also has a plurality of second grooves 224a and 224b arranged along the X axis. Wherein, the depth of part of the second groove 224a is also the second groove depth d2, but the depth of another part of the second groove 224b is the first groove depth d1. The second grooves 224a with the second groove depth d2 and the second grooves 224b with the first groove depth d1 are alternately arranged to form Figure 8 The structure of the thin film 200e that can improve the brightness shown in.
[0036] In the traditional backlight module, each film that can improve brightness only has V-shaped grooves arranged in a single direction (X-axis direction or Y-axis direction). Therefore, two films that can improve brightness need to be laminated Together, and make the groove arrangement direction perpendicular to each other, in order to achieve the purpose of concentrating the light in the YZ plane direction and the XZ plane direction. However, in the brightness-improving film of the present invention, it has a plurality of first grooves arranged along a first direction and a plurality of second grooves arranged along a second direction. The first direction and the second direction They are perpendicular to each other. In this way, the light concentration effect of the two films that can increase brightness in the traditional backlight module can be achieved after being laminated, so as to reduce the number of components in the backlight module and the thickness of the backlight module, and reduce its manufacturing cost. In addition, the brightness-increasing particles in the brightness-increasing structure also have a light diffusion effect, so it will help to make the emitted light more uniform, and has the effect of improving the brightness.
[0037] The above are only the preferred and feasible embodiments of the present invention, and the scope of rights of the present invention should not be limited accordingly. For those of ordinary skill in the art, the technical solutions and technical ideas of the present invention are used to make Various other corresponding changes and modifications, and all these changes and modifications should fall within the protection scope of the claims of the present invention.
