Optical component and method of manufacturing the same

Abstract

The present invention discloses a method for forming an optical component and an optical component. The optical component comprises: a first optical film having a first surface; an adhesive layer having a second surface and a third surface opposite to the second surface, wherein the second surface of the adhesive layer is disposed on the first surface of the first optical film, wherein the adhesive layer comprises a heat-hardenable material having a plurality of first acrylate functional groups; and a second optical film comprising a plurality of microstructures, wherein each of at least one of the microstructures has an upper plane comprising a plurality of second acrylate functional groups, wherein when the bonds between the plurality of first acrylate functional groups and the plurality of second acrylate functional groups are formed in a photoirradiation process so that the upper plane is bonded to the third surface of the adhesive layer, the heat-hardenable material of the adhesive layer has been heat-hardened, thereby preventing the upper plane from penetrating the adhesive layer.

Description

[0001] This case is a divisional application. The parent case is a Chinese invention patent application with application date of November 23, 2016 and application number 201611047161.1. Technical Field

[0002] The present invention relates to an optical component, in particular to an optical component bonded by an adhesive. Background Art

[0003] Figure 1 1 is a cross-sectional schematic diagram of a bonding optical component 10. The optical component 10 includes a lower prism sheet 11 and an upper prism sheet 12 disposed above the lower prism sheet 11. Conventionally, a liquid adhesive layer 13 is coated on the lower surface of the upper prism sheet 12, and the prisms 14 of the lower prism sheet 11 are inserted into the adhesive layer 13. Then, a heat treatment process or a UV light irradiation process is applied to the adhesive layer 13 to cause the adhesive layer 13 to undergo a cross-linking reaction to complete the bonding between the lower prism sheet 11 and the upper prism sheet 12. The advantage of this method is that inserting the prisms 14 of the lower prism sheet 11 into the adhesive layer 13 can ensure that there is a sufficient contact area between the adhesive layer 13 and the prisms 14 of the lower prism sheet 11 to ensure the bonding stability of the optical component 10. However, inserting the prisms 14 of the lower prism sheet 11 into the adhesive layer 13 will reduce the exposed surface area of ​​the prisms 14 of the lower prism sheet 11, so that the brightness of the bonding optical component 10 is reduced. In addition, since the adhesive layer 13 is in liquid state before lamination, it is easy to see obvious wick phenomenon 15 (i.e., capillary phenomenon, the adhesive layer 13 is heavily adsorbed on both sides of the prism tip). The wick phenomenon 15 also reduces the exposed surface area of ​​the prism 14 of the lower prism sheet 11, resulting in reduced brightness.

[0004] Therefore, the present invention provides an optical component and a manufacturing method thereof to overcome the above disadvantages. Summary of the invention

[0005] The present invention proposes an optical component and a method for manufacturing an optical component, wherein the microstructure of the lower optical film does not penetrate into the adhesive layer disposed on the lower surface of the upper optical film, which can effectively control the contact area of ​​the bonding to avoid the siphon phenomenon generated during the bonding process, so as to further improve the brightness of the optical component and ensure that the upper and lower optical films of the optical component have sufficient adhesive strength.

[0006] In one embodiment, the present invention discloses an optical component, which includes: a first optical film having a first surface; an adhesive layer having a second surface and a third surface relative to the second surface, wherein the second surface of the adhesive layer is configured on the first surface of the first optical film; and a second optical film including a plurality of microstructures, wherein each of at least one of the microstructures is bonded to the third surface of the adhesive layer and the plurality of microstructures do not penetrate into the adhesive layer.

[0007] In one embodiment, the present invention discloses an optical component, which includes: a first optical film having a first surface; an adhesive layer having a second surface and a third surface opposite to the second surface, wherein the second surface of the adhesive layer is configured on the first surface of the first optical film, wherein the adhesive layer includes a heat-hardenable material having a plurality of first acrylate functional groups; and a second optical film including a plurality of microstructures, wherein each of at least one of the microstructures has an upper plane including a plurality of second acrylate functional groups, and bonds between the plurality of first acrylate functional groups and the plurality of second acrylate functional groups are formed in a photoirradiation process so that when the upper plane is bonded to the third surface of the adhesive layer, the heat-hardenable material of the adhesive layer has been heat-hardened, thereby preventing the upper plane from penetrating into the adhesive layer.

[0008] In one embodiment, the present invention discloses an optical component, which includes: a first optical film having a first surface; an adhesive layer having a second surface and a third surface opposite to the second surface, wherein the second surface of the adhesive layer is configured on the first surface of the first optical film, wherein the adhesive layer includes a heat-hardenable material having a plurality of first acrylate functional groups; and a second optical film including a plurality of microstructures, wherein each of the microstructures has an upper plane including a plurality of second acrylate functional groups, and bonds between the plurality of first acrylate functional groups and the second acrylate functional groups are formed in a photoirradiation process so that when the upper plane is bonded to the third surface of the adhesive layer, the heat-hardenable material of the adhesive layer has been heat-hardened, thereby preventing the upper plane from penetrating into the adhesive layer.

[0009] In one embodiment, the present invention discloses an optical component, which includes: a first optical film having a first surface; an adhesive layer having a second surface and a third surface opposite to the second surface, wherein the second surface of the adhesive layer is configured on the first surface of the first optical film, wherein the adhesive layer includes a heat-hardenable material having a plurality of first acrylate functional groups; and a second optical film including a plurality of microstructures, wherein each of the microstructures has a plurality of second acrylate functional groups, and a bond is formed between the plurality of first acrylate functional groups and the plurality of second acrylate functional groups through a photoirradiation process, so that when an upper plane of each of the microstructures is bonded to the third surface of the adhesive layer, the heat-hardenable material of the adhesive layer has been heat-hardened, thereby preventing the upper plane of the microstructure from penetrating into the adhesive layer.

[0010] In one embodiment, the present invention discloses an optical component, which includes: a first optical film having a first surface; an adhesive layer having a second surface and a third surface opposite to the second surface, wherein the second surface of the adhesive layer is configured on the first surface of the first optical film, wherein the adhesive layer includes a heat-hardenable material having multiple first acrylate functional groups; and a second optical film including multiple microstructures, wherein each of at least one of the microstructures has multiple second acrylate functional groups, and bonds between the multiple first acrylate functional groups and the multiple second acrylate functional groups are formed by a photoirradiation process, so that when each of at least one of the microstructures is bonded to the third surface of the adhesive layer, the heat-hardenable material of the adhesive layer has been heat-hardened, thereby preventing each of at least one of the microstructures from penetrating into the adhesive layer.

[0011] In one embodiment, the present invention discloses an optical component, which includes: a first optical film having a first surface; an adhesive layer having a second surface and a third surface opposite to the second surface, wherein the second surface of the adhesive layer is configured on the first surface of the first optical film, wherein the adhesive layer includes a heat-hardenable material having a plurality of first acrylate functional groups; and a second optical film including a plurality of microstructures, wherein each of at least one of the microstructures has an upper plane including a plurality of second acrylate functional groups, and bonds between the plurality of first acrylate functional groups and the plurality of second acrylate functional groups are formed by a photoirradiation process, so that when the upper plane is bonded to the third surface of the adhesive layer, the heat-hardenable material of the adhesive layer has been heat-hardened, thereby preventing the upper plane from penetrating into the adhesive layer.

[0012] In one embodiment, the present invention discloses an optical component, which includes: a first optical film having a first surface; an adhesive layer having a second surface and a third surface opposite to the second surface, wherein the second surface of the adhesive layer is configured on the first surface of the first optical film, wherein the adhesive layer includes a heat-hardenable material having a plurality of first acrylate functional groups; and a second optical film including a plurality of microstructures, wherein each of at least one of the microstructures has a plurality of second acrylate functional groups, and a bond between the plurality of first acrylate functional groups and the plurality of second acrylate functional groups is formed by a photoirradiation process, so that when each of at least one of the microstructures is bonded to the third surface of the adhesive layer, the heat-hardenable material of the adhesive layer has been heat-hardened, thereby preventing each of at least one of the microstructures from penetrating into the adhesive layer.

[0013] Preferably, in the above-mentioned embodiment, each of the microstructures has an upper plane bonded to the third surface of the adhesive layer. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a cross-sectional schematic diagram of a bonded optical component;

[0015] Figure 2 is a cross-sectional schematic diagram of an optical component in a first embodiment of the present invention;

[0016] Figure 3 A schematic diagram showing that the upper plane of the microstructure is replaced by a plurality of raised portions (which may have a fixed height) and a plurality of non-raised portions (which may have a fixed height) alternating with the plurality of raised portions;

[0017] Figure 4A The upper plane of each microstructure in a part of the plurality of microstructures of the second optical film is bonded to the lower surface of the adhesive layer, and the upper plane of each microstructure 104 in another part of the plurality of microstructures of the second optical film is not bonded to the lower surface of the adhesive layer;

[0018] Figure 4B The upper plane of each prism in a part of the plurality of prisms of the second optical film is bonded to the lower surface of the adhesive layer, and each prism in another part of the plurality of prisms of the second optical film is not bonded to the lower surface of the adhesive layer and has no upper plane;

[0019] Figure 5 is a cross-sectional schematic diagram of an optical component in a third embodiment of the present invention;

[0020] FIG. 6A to FIG. 6C It is a schematic diagram of the actual cross section of Example 2, Example 4 and Comparative Example 1.

[0021] Explanation of reference numerals: 10-adhesive optical component; 11-lower prism sheet; 12-upper prism sheet; 13-adhesive layer; 14-prism; 15-siphon phenomenon; 100-optical component; 101-first optical film; 101A-upper surface; 101B-lower surface; 102-second optical film; 102A-upper surface; 102B-lower surface; 103-adhesive layer; 103A-upper surface; 103B-lower surface; 104-microstructure; 104P-one of a pair of opposite surfaces; 104Q-one of a pair of opposite surfaces; 104G -valley; 104R-ridge; 104X-a part; 104Y-another part; 105-substrate; 106-upper plane; 106A-raised part; 106B-non-raised part; 107-microstructure; 108-substrate; 200-optical component; 201-first optical film; 201A-upper surface; 201B-lower surface; 202-second optical film; 202A-upper surface; 202B-lower surface; 204-microstructure; 205-substrate; 206-upper plane; 207-microstructure; 208-substrate. DETAILED DESCRIPTION

[0022] The detailed description of the present invention is described below. The preferred embodiments described here are for the purpose of illustration and description and are not intended to limit the scope of the present invention.

[0023] The first, second and third of the first acrylate functional group, the second acrylate functional group and the third acrylate functional group listed herein are used to distinguish acrylate functional groups located at different positions or materials.

[0024] The invention discloses an optical component, wherein the microstructure of the second optical film has an upper plane bonded to an adhesive layer arranged on the lower surface of the first optical film, so that the microstructure of the second optical film does not penetrate into the adhesive layer.

[0025] First embodiment

[0026] Figure 21 is a cross-sectional schematic diagram of an optical component 100 in the first embodiment of the present invention. The optical component 100 includes a first optical film 101, a second optical film 102, and an adhesive layer 103 between the first optical film 101 and the second optical film 102. The first optical film 101 has an upper surface 101A and a lower surface 101B. The adhesive layer 103 has an upper surface 103A and a lower surface 103B. The upper surface 103A of the adhesive layer 103 is disposed on the lower surface 101B of the first optical film 101. The adhesive layer 103 includes a heat-hardenable material having a plurality of first acrylate functional groups. The heat-hardenable material may include a plurality of components mixed together (each component having a chemical formula). The heat-curable material may also include only a single component (this single component has a chemical formula, the chemical formula includes a heat-curable part and at least one first acrylate functional group bonded to the heat-curable part. The second optical film 102 has an upper surface 102A and a lower surface 102B. The upper surface 102A of the second optical film 102 includes a plurality of microstructures 104. Optionally, the second optical film 102 may further include a substrate 105 (such as a PET substrate) and microstructures 104 disposed on the substrate 105. Each of the at least one microstructure 104 has an upper plane 106 including a plurality of second acrylate functional groups. The bonding between the first acrylate functional group and the second acrylate functional group is formed by a photo-irradiation process (such as a photo-curable or UV light-curable process). , so that when the upper plane 106 is bonded to the lower surface 103B of the adhesive layer 103, the heat-curable material of the adhesive 103 has been heat-cured, thereby preventing the upper plane 106 from piercing the adhesive layer 103. Preferably, each microstructure 104 has an upper plane 106 bonded to the lower surface 103B of the adhesive layer 103, and the bonding is formed by a light irradiation process (such as a light-curable or UV-light-curable process) to form a bond between the first acrylate functional group and the second acrylate functional group (at this time, the heat-curable material of the adhesive 103 has been heat-cured, thereby preventing the upper plane 106 from piercing the adhesive layer 103). The adhesion between the first optical film 101 and the second optical film 102 can be greater than 10 g / 25 mm, or 20 g / 25 mm, or 60 g / 25 mm, or 70 g / 25 mm, or 80 g / 25 mm.

[0027] Each microstructure 104 of the second optical film 102 may be a prism, a lenticular lens or a microlens. In one embodiment, the second optical film 102 includes a plurality of microstructures 104 extending substantially in a first direction. The first direction may be the length direction of the microstructure 104, preferably perpendicular to the width direction (e.g., cross-sectional direction) of the microstructure 104. The height of the microstructure 104 may vary along the first direction. The upper plane 106 of the microstructure 104 may also be modified to include a plurality of raised portions 106A (which may have a fixed height) and a plurality of non-raised portions 106B (which may have a fixed height) alternating with the plurality of raised portions 106A, and the raised portions 106A of the upper plane 106 are bonded to the lower surface 103B of the adhesive layer 103 (see Figure 3 ). The microstructure 104 may have a linear length, a meandering length, or a wavy length. Preferably, the upper plane 106 of each microstructure 104 of the second optical film 102 is bonded to the lower surface 103B of the adhesive layer 103; more preferably, each microstructure 104 of the second optical film 102 is a prism. The prism 104 of the second optical film 102 has a pair of opposite faces 104P, 104Q on both sides of its upper plane 106. The faces of adjacent prisms 104 are tilted downward to form a groove 104G (groove or valley). Preferably, the dihedral angle defined by the extended planes of the opposite faces 104P, 104Q of the prism 104 is a constant value over the entire prism 104.

[0028] In one embodiment, the second optical film 102 includes a plurality of microstructures 104 (e.g., prisms, lenticular lenses, or microlenses) extending substantially in the first direction, and each microstructure 104 (which may be a microstructure of a fixed height or may be changed to a microstructure of a fixed height) in a portion 104X of the plurality of microstructures 104 in the second optical film 102 is substantially parallel to the first direction. Figure 3 The upper plane 106 of the microstructures 104 with varying heights in the second optical film 102 is bonded to the lower surface 103B of the adhesive layer 103, and the upper plane 106 of each microstructure 104 in another portion 104Y of the plurality of microstructures 104 in the second optical film 102 is not bonded to the lower surface 103B of the adhesive layer 103 (see Figure 4A In another embodiment, the second optical film 102 includes a plurality of prisms 104 extending substantially in the first direction, and each prism 104 (which may be a prism of a fixed height or may be changed to a prism having a fixed height) in a portion 104X of the plurality of prisms 104 in the second optical film 102 is substantially parallel to the first direction. Figure 3The upper plane 106 of the prisms 104 with varying heights in the second optical film 102 is bonded to the lower surface 103B of the adhesive layer 103, and each prism 104 in another part 104Y of the plurality of prisms 104 in the second optical film 102 (the opposite surfaces 104P and 104Q intersect to form the ridgeline 104R of the prism 104; preferably, the dihedral angle defined by the opposite surfaces 104P and 104Q of the prism 104 is a constant value on the entire prism 104) is not bonded to the lower surface 103B of the adhesive layer 103 and does not have the upper plane 106, so as to greatly increase the brightness (i.e., optical gain) of the optical component 100 (see Figure 4B ).

[0029] The first optical film 101 can be any suitable optical film, such as a brightness enhancement film, a diffuser, a reflective polarized brightness enhancement film (DBEF), etc. The first optical film 101 can include a substrate 108 (such as a PET substrate) and a plurality of microstructures 107 disposed on the substrate 108. Each microstructure 107 of the first optical film 101 can be a prism, a lens (lenticular lens) or a microlens (microlens). In a preferred embodiment, the first optical film 101 includes a plurality of microstructures 107 that substantially extend along a second direction (perpendicular to the first direction).

[0030] The adhesive layer 103 may be made of a unitary / homogeneous material. Optionally, the unitary / homogeneous material may contain light diffusion particles or may not contain light diffusion particles. The thickness of the adhesive layer 103 may be 0.1 to 10 microns or 0.1 to 5 microns, preferably 0.1 to 2 microns, and more preferably 0.5 to 1 micron. The lower surface 103B of the adhesive layer 103 may be a structured surface as described in U.S. Provisional Application No. 62 / 372,315, the entire text of which is incorporated herein by reference.

[0031] The detailed manufacturing method is described as follows. For the convenience of explanation, only the manufacturing method of the prism 104 of the second optical film 102 bonded to the adhesive layer 103 is described. This manufacturing method can be applied to other microstructures 104 of the second optical film 102, such as lenticular lenses or microlenses.

[0032] First, an adhesive layer 103 is disposed on the lower surface 101B of the first optical film 101. The adhesive layer 103 includes a heat-hardenable material having a plurality of first acrylate functional groups. Before the first optical film 101 and the second optical film 102 are attached, the adhesive layer 103 first undergoes a heat-hardening cross-linking reaction, and then the prism 104 of the second optical film 102 is bonded to the adhesive layer 103. At this time, the heat-hardenable material of the adhesive layer 103 after the heat-hardening cross-linking reaction has been heat-hardened, so that the adhesive layer 103 has been hardened, and therefore the prism 104 of the second optical film 102 cannot be inserted into the adhesive layer 103. It should be noted that "the adhesive layer 103 has been hardened" can also mean "the adhesive layer 103 has been hardened to a certain degree so that the prism 104 of the second optical film 102 cannot be inserted into the adhesive layer 103". In order to meet the above requirements, the weight ratio of the heat-hardenable material to the adhesive layer can be greater than 50%, or greater than 55%, or greater than 60%, or greater than 70%, or greater than 80%, or greater than 90%. In addition, the hardened adhesive layer 103 is not fluid, so the adhesive layer 103 will not be adsorbed on both sides of the prism tip, thereby greatly increasing the brightness of the optical component 100. The brightness of the optical component 100 can be at least 1.7, preferably 1.8. In order to increase the adhesion between the adhesive layer 103 and the prisms 104 of the second optical film 102, the first embodiment of the present invention adopts: (a) the top of the prism 104 of the second optical film 102 can be designed to have an upper plane 106 (i.e., the top of the prism 104 is changed from a ridge line to a plane 106); and (b) the heat-curable material of the adhesive layer 103 has a plurality of first acrylate functional groups and the prisms 104 of the second optical film 102 have a plurality of second acrylate functional groups, so that the first acrylate functional groups of the adhesive layer 103 and the second acrylate functional groups of the upper plane 106 of the prism 104 of the second optical film 102 can undergo a photocuring cross-linking reaction to provide sufficient chemical bonding between the adhesive layer 103 and the prisms 104 of the second optical film 102, thereby further improving the adhesion. After the heat-curable material of the adhesive layer 103 has been cured, the heat-curable material of the adhesive layer 103 still has a large number of first reactive acrylate functional groups, and the upper plane 106 of the prism 104 of the second optical film 102 has a large number of second reactive acrylate functional groups (preferably, after the initial illumination, the prism 104 of the second optical film 102 is not completely cured).The bonding between the first active acrylate functional group of the heat-curable material of the adhesive layer 103 and the second active acrylate functional group of the prism 104 of the second optical film 102 (until the prism 104 of the second optical film 102 has been cured) is formed by the photoirradiation process, so that the upper plane 106 of the prism 104 of the second optical film 102 is bonded to the adhesive layer 103, at which time the heat-curable material of the adhesive layer 103 has been heat-cured, thereby preventing the upper plane 106 of the prism 104 of the second optical film 102 from piercing the adhesive layer 103; therefore, the adhesion between the adhesive layer 103 and the prism 104 of the second optical film 102 can be greatly improved without piercing the prism 104 of the second optical film 102 into the adhesive layer 103. The adhesion can be at least 40 g / 25 mm, preferably 96 g / 25 mm.

[0033] In one embodiment, the adhesive layer 103 may include a heat-hardenable material having a plurality of first acrylate functional groups and a light-hardenable material having a plurality of third acrylate functional groups. A light irradiation process may also be effectively applied to form a bond between the adhesive layer 103 and the prisms 104 of the second optical film 102. Advantageously, the bond between the third reactive acrylate functional group of the light-hardenable material of the adhesive layer 103 and the second reactive acrylate functional group of the prisms 104 of the second optical film 102 may be formed during the light irradiation process, so that the adhesion between the adhesive layer 103 and the prisms 104 of the second optical film 102 is better than the above-mentioned embodiment (there is no need to penetrate the prisms 104 of the second optical film 102 into the adhesive layer 103).

[0034] The upper plane 106 of the prism 104 of the second optical film 102 with a smaller width cannot provide sufficient adhesion. The upper plane 106 of the prism 104 of the second optical film 102 with a larger width will reduce the brightness. Therefore, the width of the upper plane 106 of the prism 104 of the second optical film 102 can be 0.5 to 10 microns, preferably 1 to 5 microns, and more preferably 2 to 4 microns. The upper plane 106 of the prism 104 of the second optical film 102 is formed by a mold embossing film, and the mold is engraved by a tool with a top flat edge, and the top flat edge corresponds to the upper plane 106 of the prism 104. In order to effectively increase the brightness, only a portion of the plurality of prisms 104 of the second optical film 102 is bonded to the adhesive layer 103. The upper plane 106 of the prism 104 of the second optical film 102 is used to increase the contact area of ​​the contact adhesive layer 103 to increase the adhesion. However, the present invention is not limited to this case. As long as the top of the prism 104 of the second optical film 102 can provide a larger contact area to increase the adhesion, the top of the prism 104 of the second optical film 102 is not limited to any shape. For example, the lower surface 103B of the adhesive layer 103 is a structured surface and the top of the prism 104 of the second optical film 102 has a shape corresponding to the structured surface 103B of the adhesive layer 103 (preferably, the adhesive layer 103 is made of a single / homogeneous material; optionally, the single / homogeneous material may include light diffusion particles or not include light diffusion particles). In one embodiment, the lower surface 103B of the adhesive layer 103 may be a structured surface as described in U.S. Patent Application No. 15 / 247,901 (a second convex or concave shape superimposed on a first convex shape) or U.S. Provisional Application No. 62 / 372,315 and the top of the prism 104 of the second optical film 102 has a shape corresponding to the structured surface 103B of the adhesive layer 103. In order to effectively diffuse light and increase brightness at the same time, only a portion of the plurality of prisms 104 of the second optical film 102 is bonded to the adhesive layer 103, which can be referred to in U.S. Provisional Application No. 62 / 372,315. The various forms of the prisms 104 of the second optical film 102 in U.S. Provisional Application No. 62 / 372,315 can be incorporated herein by reference.

[0035] If the adhesion is sufficient (i.e., there is a strong chemical bond between the adhesive layer 103 and the prisms 104 of the second optical film 102), the top of the prisms 104 of the second optical film 102 described previously may not have the upper plane 106 for enhancing the brightness of the optical component 100 (i.e., the prisms 104 of the second optical film 102 are regular prisms or triangular prisms).

[0036] The chemical formula of the heat-hardenable material (or light-hardenable material) of the adhesive layer 103 may be R1-F1. The main chain R1 may be a long carbon chain, aromatic, benzene ring family, or soft PU family, etc. The reactive functional group F1 may include one acrylate functional group, two acrylate functional groups, three acrylate functional groups, or multiple acrylate functional groups, etc. The chemical formula of the material of the prism 104 of the second optical film 102 may be R2-F2. The main chain R2 may be a long carbon chain, aromatic, benzene ring family, or soft PU family, etc. The reactive functional group F2 may include one acrylate functional group, two acrylate functional groups, three acrylate functional groups, or multiple acrylate functional groups, etc. In a preferred embodiment, the first CC double bond of the first acrylate functional group (or the third CC double bond of the third acrylate functional group) and the second CC double bond of the second acrylate functional group are respectively converted into CC single bonds to form CC single bonds between the first acrylate functional group and the second acrylate functional group (or between the third acrylate functional group and the second acrylate functional group) to form a bond between the first acrylate functional group of the heat-curable material of the adhesive layer 103 (or the third acrylate functional group of the photo-curable material) and the second acrylate functional group of the prism 104 of the second optical film 102. However, the present invention is not limited to this case; for example, at least one of the first CC double bond and the second CC double bond may also come from other functional groups. The weight ratio of the heat-curable material or the photo-curable material having an acrylate functional group to the adhesive layer 103 may be greater than 40%, or greater than 50%, or greater than 55%, or greater than 60%, or greater than 70%, or greater than 80%, or greater than 90%.

[0037] The present invention is also not limited to forming a bond between the first acrylate functional group of the heat-curable material of the adhesive layer 103 (or the third acrylate functional group of the photo-curable material) and the second acrylate functional group of the prism 104 of the second optical film 102. As long as the bond between the heat-curable material of the adhesive layer 103 (or the photo-curable material) and the prism 104 of the second optical film 102 can be formed in the photo-irradiation process (at this time, the heat-curable material of the adhesive layer 103 has been heat-cured, thereby preventing the upper plane 106 from penetrating the adhesive layer 103) to enhance adhesion and brightness, the first acrylate functional group of the heat-curable material of the adhesive layer 103 (or the third acrylate functional group of the photo-curable material) and the second acrylate functional group of the prism 104 of the second optical film 102 can be replaced by any suitable functional group, respectively. For example, the heat-curable material (or light-curable material) of the adhesive layer 103 may have an epoxy functional group and the prisms 104 of the second optical film 102 may have a hydroxyl functional group so that the hydroxyl functional group can open the epoxy functional group to form a bond between the adhesive layer 103 and the prisms 104 of the second optical film 102. Conversely, the heat-curable material (or light-curable material) of the adhesive layer 103 may have a hydroxyl functional group and the prisms 104 of the second optical film 102 may have an epoxy functional group so that the hydroxyl functional group can open the epoxy functional group to form a bond between the adhesive layer 103 and the prisms 104 of the second optical film 102.

[0038] Second embodiment

[0039] like Figure 2 As shown, Figure 21 is a cross-sectional schematic diagram of an optical component 100 in a second embodiment of the present invention. Compared with the first embodiment, the adhesive layer 103 of the second embodiment includes a light-hardenable material having a plurality of first acrylate functional groups; therefore, the features in the first embodiment can be correspondingly applied to the second embodiment, which will not be further described herein. A first light-hardenable process is applied to the light-hardenable material of the adhesive layer 103. Before the first optical film 101 and the second optical film 102 are bonded, the adhesive layer 103 is first subjected to a light-hardening cross-linking reaction, and then the prism 104 of the second optical film 102 is bonded to the adhesive layer 103. At this time, the adhesive layer 103 is hardened to a certain degree so that the prism 104 of the second optical film 102 cannot be inserted into the adhesive layer 103. In addition, the hardened adhesive layer 103 is not fluid, so the adhesive layer 103 will not be adsorbed on both sides of the prism tip to greatly increase the brightness. The brightness can be at least 1.7, preferably 1.8. In order to increase the adhesion between the adhesive layer 103 and the prisms 104 of the second optical film 102, the second embodiment of the present invention adopts: (a) the top of the prism 104 of the second optical film 102 can be designed to have an upper plane 106 (i.e., the top of the prism 104 is changed from a ridge line to a plane 106); and (b) the photohardenable material of the adhesive layer 103 has a plurality of first acrylate functional groups and the prisms 104 of the second optical film 102 have a plurality of second acrylate functional groups, so that the first acrylate functional groups of the adhesive layer 103 and the second acrylate functional groups of the upper plane 106 of the prism 104 of the second optical film 102 can undergo another photohardening cross-linking reaction to provide sufficient chemical bonding between the adhesive layer 103 and the prisms 104 of the second optical film 102 to further enhance the adhesion. When the photohardenable material of the adhesive layer 103 has been hardened to a certain extent (such that the prism 104 of the second optical film 102 cannot be inserted into the adhesive layer 103), the photohardenable material of the adhesive layer 103 still has a large number of first reactive acrylate functional groups, and the upper plane 106 of the prism 104 of the second optical film 102 has a large number of second reactive acrylate functional groups (preferably, after the initial light exposure, the prism 104 of the second optical film 102 is not completely hardened).The bonding between the first active acrylate functional group of the photo-hardenable material of the adhesive layer 103 and the second active acrylate functional group of the prism 104 of the second optical film 102 (until the prism 104 of the second optical film 102 has been hardened) is formed by applying a light irradiation process, so that the upper plane 106 of the prism 104 of the second optical film 102 is bonded to the adhesive layer 103, at which time the photo-hardenable material of the adhesive layer 103 has been photohardened to a certain degree, thereby preventing the upper plane 106 of the prism 104 of the second optical film 102 from piercing the adhesive layer 103; therefore, the adhesion between the adhesive layer 103 and the prism 104 of the second optical film 102 can be greatly improved without piercing the prism 104 of the second optical film 102 into the adhesive layer 103. The adhesion can be at least 40 g / 25 mm, preferably 96 g / 25 mm.

[0040] The chemical formula of the light-hardenable material of the adhesive layer 103 may be R3-F3. The main chain R3 may be a long carbon chain, aromatic, benzene ring family or soft PU family, etc. The reactive functional group F3 may be an acrylate functional group, a diacrylate functional group, a triacrylate functional group or a multi-acrylate functional group, etc. The chemical formula of the material of the prism 104 of the second optical film 102 may be R4-F4. The main chain R4 may be a long carbon chain, aromatic, benzene ring family or soft PU family, etc. The reactive functional group F4 may include one acrylate functional group, two acrylate functional groups, three acrylate functional groups or multiple acrylate functional groups, etc. In a preferred embodiment, the first CC double bond of the first acrylate functional group and the second CC double bond of the second acrylate functional group are respectively converted into CC single bonds to form CC single bonds between the first acrylate functional group and the second acrylate functional group, so as to form a bond between the first acrylate functional group of the photo-hardenable material of the adhesive layer 103 and the second acrylate functional group of the prism 104 of the second optical film 102. However, the present invention is not limited to this case; for example, at least one of the first CC double bond and the second CC double bond may also come from other functional groups. The weight ratio of the photo-hardenable material having acrylate functional groups to the adhesive layer 103 may be greater than 40%, or greater than 50%, or greater than 55%, or greater than 60%, or greater than 70%, or greater than 80%, or greater than 90%.

[0041] The present invention is also not limited to forming a bond between the first acrylate functional group of the photohardenable material of the adhesive layer 103 and the second acrylate functional group of the prism 104 of the second optical film 102. As long as the bond between the photohardenable material of the adhesive layer 103 and the prism 104 of the second optical film 102 can be formed in the photoirradiation process (at this time, the photohardenable material of the adhesive layer 103 has been photohardened to a certain extent, thereby preventing the upper plane 106 from penetrating the adhesive layer 103) to improve adhesion and brightness, the first acrylate functional group of the photohardenable material of the adhesive layer 103 and the second acrylate functional group of the prism 104 of the second optical film 102 can be replaced by any suitable functional group, respectively. For example, the photo-hardenable material of the adhesive layer 103 may have an epoxy functional group and the prisms 104 of the second optical film 102 may have a hydroxyl functional group so that the hydroxyl functional group can open the epoxy functional group to form a bond between the adhesive layer 103 and the prisms 104 of the second optical film 102. Conversely, the photo-hardenable material of the adhesive layer 103 may have a hydroxyl functional group and the prisms 104 of the second optical film 102 may have an epoxy functional group so that the hydroxyl functional group can open the epoxy functional group to form a bond between the adhesive layer 103 and the prisms 104 of the second optical film 102.

[0042] Third embodiment

[0043] The present invention also discloses an optical component, in which the microstructure 204 of the second optical film 202 is directly bonded to the first optical film 201 . Figure 5 Schematic cross-sectional view of the optical component 200 in the third embodiment of the present invention. Compared with the first and second embodiments, the lower surface 201B of the first optical film 201 does not have an adhesive layer thereon. The prism 204 of the second optical film 202 can directly contact the lower surface 201B of the first optical film 201 to have a physical adhesive effect, but the prism 204 of the second optical film 202 does not penetrate the lower surface 201B of the first optical film 201. In one embodiment, the top of the prism 204 of the second optical film 202 can be designed to have an upper plane 206 for increasing adhesion. In another embodiment, a primer surface treatment can be applied to the lower surface 201B of the first optical film 201 to increase adhesion. Due to the lack of an adhesive layer, the optical component 200 can retain the brightness of the original two optical films that are not bonded to each other. The brightness is at least 1.8.

[0044] experiment

[0045] In Examples 1 to 3, when the second optical film was bonded to the first optical film, the prisms of the second optical film did not penetrate / insert into the adhesive layer; in Example 4, when the second optical film was bonded to the first optical film, the prisms of the second optical film were directly bonded to the back side of the first optical film without using an adhesive layer; in Comparative Example 1, when the second optical film was bonded to the first optical film, the prisms of the second optical film penetrated / inserted into the adhesive layer.

[0046] In Examples 1 to 3, the adhesive layer 103 is made of a material that combines 3-(Acryloyloxy)-2-hydroxypropylmethacrylate (G-201P, manufactured by Kyoeisha Chemical Co., Ltd.), Hexamethylene Diisocyanate Trimer (HDT-100, manufactured by Anfeng Industrial Co., Ltd.), and acrylate oligomer (SY-1063, manufactured by Negami Industrial Co., Ltd.). 3-(Acryloyloxy)-2-hydroxypropyl methacrylate is a heat-hardenable material and accounts for 60% of the weight of the material of the adhesive layer 103. Hexamethylene Diisocyanate Trimer is a heat-hardening agent and accounts for 10% of the weight of the material of the adhesive layer 103. Acrylate oligomer is a light-hardenable material and accounts for 30% of the weight of the material of the adhesive layer 103. In Examples 1 to 3, the prisms of the second optical film are made of a material that combines Difunctional Epoxy acrylate (RV-280, manufactured by Aekyung Chemical Company), Bisphenol A (EO) 10Dimethacrylate (M2101, manufactured by Miwon Company) and Tetrahydrofurfuryl Acrylate (M150, manufactured by Miwon Company). The weight ratio of Difunctional Epoxy acrylate to the material of the prism 104 of the second optical film 102 is 40%. The weight ratio of Bisphenol A (EO) 10Dimethacrylate to the material of the prism 104 of the second optical film 102 is 50%. The weight ratio of Tetrahydrofurfuryl Acrylate to the material of the prism 104 of the second optical film 102 is 10%. In addition, a photoinitiator 184 is added to each embodiment. After mixing at room temperature for 4 hours, relevant physical property measurements and sample coating, production and preparation are carried out. The measurement results are listed in Table 1 and FIG. 6A to FIG. 6C The actual cross-sectional schematic diagrams of Example 2, Example 4 and Comparative Example 1 are described.

[0047] Table 1

[0048] Example 1 Example 2 Example 3 Example 3 Comparative Example 1 Upper surface width (micrometers) 1 3 5 3 - Adhesive Thickness (μm) 0.6～0.8 0.6～0.9 0.6～0.8 - 1.0～1.5 Brightness (optical gain) 1.81 1.77 1.71 1.83 1.52 Adhesion(g / 25mm) 43 72 105 24 167 Siphon phenomenon none none none none Difference

[0049] Example 1

[0050] A mixture of a heat-hardenable material and a light-hardenable material is used as the material of the adhesive layer 103. The adhesive layer 103 is coated on the lower surface 101B of the first optical film 101, and the solvent of the adhesive layer 103 is dried in an oven and the adhesive layer 103 undergoes a heat-hardening cross-linking reaction. The dry film thickness of the adhesive layer 103 is controlled to be 0.6 to 1.0 microns. The first optical film 101 and the second optical film 102 are bonded using a precision fitting roller. The prism 104 of the second optical film 102 has an upper plane 106 with a width of 1 micron. Since the adhesive layer 103 has been heat-hardened, the prism 104 of the second optical film 102 cannot be inserted into the adhesive layer 103. After the heat-hardening cross-linking reaction, the lower surface 103B of the adhesive layer 103 has a large number of active acrylate functional groups (which can be acrylate functional groups of heat-hardenable materials or acrylate functional groups of light-hardenable materials). After the lamination process, the contact surface between the adhesive layer 103 and the upper plane 106 of the prism 104 of the second optical film 102 undergoes a UV curing (light curing) cross-linking reaction to have sufficient chemical bonding and greatly increase the adhesion. The adhesion can reach 43 grams / 25 mm. Since the prism 104 of the second optical film 102 is not inserted into the adhesive layer 103, no siphon phenomenon occurs; therefore, the optical component 100 has a higher brightness (optical gain). The brightness can reach 1.81, as shown in Table 1.

[0051] Example 2

[0052] A mixture of a heat-hardenable material and a light-hardenable material is used as the material of the adhesive layer 103. The adhesive layer 103 is coated on the lower surface 101B of the first optical film 101, and the solvent of the adhesive layer 103 is dried in an oven and the adhesive layer 103 undergoes a heat-hardening cross-linking reaction. The dry film thickness of the adhesive layer 103 is controlled to be 0.6 to 1.0 microns. The first optical film 101 and the second optical film 102 are bonded using a precision fitting roller. The prism 104 of the second optical film 102 has an upper plane 106 with a width of 3 microns. Since the adhesive layer 103 has been heat-hardened, the prism 104 of the second optical film 102 cannot be inserted into the adhesive layer 103. After the heat-hardening cross-linking reaction, the lower surface 103B of the adhesive layer 103 has a large number of active acrylate functional groups (which may be acrylate functional groups of heat-hardenable materials or acrylate functional groups of light-hardenable materials). After the lamination process, the contact surface between the adhesive layer 103 and the upper plane 106 of the prism 104 of the second optical film 102 undergoes a UV curing (light curing) cross-linking reaction to have sufficient chemical bonding and greatly increase the adhesion. Since the width of the upper plane 106 is increased to 3 microns, the adhesion is greatly increased to 72 grams / 25 mm. Since the prism 104 of the second optical film 102 is not inserted into the adhesive layer 103, no siphon phenomenon occurs; therefore, the optical component 100 has a higher brightness (optical gain). However, the width of the upper plane 106 in Example 2 is greater than the width of the upper plane 106 in Example 1, and the brightness is reduced to 1.77 (lower than the brightness of Example 1), as shown in Table 1.

[0053] Example 3

[0054] A mixture of a heat-hardenable material and a light-hardenable material is used as the material of the adhesive layer 103. The adhesive layer 103 is coated on the lower surface 101B of the first optical film 101, and the solvent of the adhesive layer 103 is dried in an oven and the adhesive layer 103 undergoes a heat-hardening cross-linking reaction. The dry film thickness of the adhesive layer 103 is controlled to be 0.6 to 1.0 microns. The first optical film 101 and the second optical film 102 are bonded using a precision fitting roller. The prism 104 of the second optical film 102 has an upper plane 106 with a width of 5 microns. Since the adhesive layer 103 has been heat-hardened, the prism 104 of the second optical film 102 cannot be inserted into the adhesive layer 103. After the heat-hardening cross-linking reaction, the lower surface 103B of the adhesive layer 103 has a large number of active acrylate functional groups (which can be acrylate functional groups of heat-hardenable materials or acrylate functional groups of light-hardenable materials). After the lamination process, the contact surface between the adhesive layer 103 and the upper plane 106 of the prism 104 of the second optical film 102 undergoes a UV curing (light curing) cross-linking reaction to have sufficient chemical bonding and greatly increase the adhesion. Since the width of the upper plane 106 is increased to 5 microns, the adhesion is greatly increased to 105 grams / 25 mm. Since the prism 104 of the second optical film 102 is not inserted into the adhesive layer 103, no siphon phenomenon occurs; therefore, the optical component 100 has a higher brightness (optical gain). However, the width of the upper plane 106 in Example 3 is greater than the width of the upper plane 106 in Example 2, and the brightness is reduced to 1.71 (lower than the brightness of Example 2), as shown in Table 1.

[0055] Example 4

[0056] When the first optical film 201 and the second optical film 202 are bonded, the embodiment 4 does not use an adhesive layer. Adhesive UV type resin is used as the material of the prism 204 of the second optical film 202. The prism 204 of the second optical film 202 has an upper plane 206 with a width of 3 microns. The prism 204 of the second optical film 202 is bonded to the lower surface 201B of the first optical film 201 without using an adhesive layer, and the second optical film 202 is directly bonded to the first optical film 201 and has a physical adhesive effect. Preferably, an initial (primer) surface treatment is applied to the lower surface 201B of the first optical film 201. The material of the prism 204 of the second optical film 202 undergoes a UV curing (light curing) cross-linking reaction to have a physical bond between the prism 204 of the second optical film 202 and the lower surface 201B of the first optical film 201. The adhesive force can reach 24 grams / 25 mm. Since no adhesive layer is used, no wicking phenomenon occurs; therefore, the optical component 200 can retain the brightness of the original two optical films that are not bonded to each other, that is, the brightness reaches 1.83, as shown in Table 1.

[0057] Comparative Example 1

[0058] UV type resin is used as the material of the adhesive layer. The adhesive layer is coated on the lower surface of the first optical film, and the solvent of the adhesive layer is dried and the dry film thickness of the adhesive layer is controlled to be 1.0 to 1.5 microns. The second optical film is bonded to the adhesive layer by precision roller embossing to insert the prism of the second optical film into the adhesive layer. The adhesive layer undergoes UV curing (light curing) cross-linking reaction to bond the prism of the second optical film to the lower surface of the adhesive layer. Due to the greatly increased contact area, the adhesion in Comparative Example 1 is better than the adhesion of each of Example 1, Example 2 and Example 3. The adhesion can be increased to 167 g / 25 mm. Since the prism of the second optical film is inserted into the adhesive layer, a siphon phenomenon occurs, resulting in poor adsorption of the adhesive layer on both sides of the prism of the second optical film; therefore, the brightness in Comparative Example 1 is more reduced than the brightness of each of Example 1, Example 2 and Example 3, that is, the brightness reaches 1.52, as shown in Table 1.

Claims

1. A method for forming an optical component, characterized in that: Include: Providing a first optical film, wherein the first optical film has a first surface; Providing an adhesive layer, the adhesive layer having a second surface and a third surface opposite to the second surface, wherein the second surface of the adhesive layer is disposed on the first surface of the first optical film, wherein the adhesive layer comprises a heat-hardenable material having a plurality of first acrylate functional groups; Providing a second optical film, the second optical film comprising a plurality of prisms, wherein each of the prisms has an upper plane, wherein the plurality of upper planes of the plurality of prisms comprise a plurality of second acrylate functional groups; performing a heating process to thermally cure the heat-curable material having a plurality of first acrylate functional groups of the adhesive layer; as well as After performing the heating process, a light irradiation process is performed, wherein a bond is formed between the multiple second acrylate functional groups of the multiple upper planes of the multiple prisms and the multiple first acrylate functional groups so that the multiple upper planes are bonded to the third surface of the adhesive layer, wherein the heat-curable material of the adhesive layer having multiple first acrylate functional groups has been heat-cured, thereby preventing the multiple prisms of the multiple upper planes from penetrating the adhesive layer, wherein the lower surface of the adhesive layer has a structured surface, the structured surface has a second convex shape or a concave shape superimposed on a first convex shape, and the top of the prism of the second optical film has a shape corresponding to the structured surface of the adhesive layer.

2. A method for forming an optical component, characterized in that: Include: Providing a first optical film, wherein the first optical film has a first surface; Providing an adhesive layer, the adhesive layer having a second surface and a third surface opposite to the second surface, wherein the second surface of the adhesive layer is disposed on the first surface of the first optical film, wherein the adhesive layer comprises a heat-hardenable material having a plurality of first acrylate functional groups and a light-hardenable material having a plurality of third acrylate functional groups; Providing a second optical film, the second optical film comprising a plurality of prisms, wherein each of the prisms has an upper plane, wherein the plurality of upper planes of the plurality of prisms comprise a plurality of second acrylate functional groups; performing a heating process to thermally cure the heat-curable material having the first plurality of acrylate functional groups of the adhesive layer, wherein the light-curable material having the third plurality of acrylate functional groups is not cured; and After performing the heating process, a light irradiation process is performed to harden the photohardenable material having multiple third acrylate functional groups, wherein the multiple second acrylate functional groups of the multiple upper planes of the multiple prisms respectively form bonds with the multiple first acrylate functional groups and the multiple third acrylate functional groups, so that the multiple upper planes are bonded to the third surface of the adhesive layer, wherein the heat-hardenable material having multiple first acrylate functional groups of the adhesive layer has been heat-hardened, thereby preventing the multiple prisms of the multiple upper planes from penetrating the adhesive layer, wherein the lower surface of the adhesive layer has a structured surface, the structured surface has a second convex shape or a concave shape superimposed on a first convex shape, and the top of the prism of the second optical film has a shape corresponding to the structured surface of the adhesive layer.

3. A method for forming an optical component, characterized in that: Include: Providing a first optical film, wherein the first optical film has a first surface; Providing an adhesive layer, the adhesive layer having a second surface and a third surface opposite to the second surface, wherein the second surface of the adhesive layer is disposed on the first surface of the first optical film, wherein the adhesive layer comprises a heat-hardenable material having a plurality of first acrylate functional groups and a light-hardenable material having a plurality of third acrylate functional groups; Providing a second optical film, the second optical film comprising a plurality of prisms, wherein each of the prisms has an upper plane, wherein the plurality of upper planes of the plurality of prisms comprise a plurality of second acrylate functional groups; performing a heating process to thermally cure the heat-curable material having the first plurality of acrylate functional groups of the adhesive layer, wherein the light-curable material having the third plurality of acrylate functional groups is not cured; and After performing the heating process, a light irradiation process is performed to harden the photohardenable material having multiple third acrylate functional groups, wherein the multiple second acrylate functional groups of the multiple upper planes of the multiple prisms respectively form bonds with the multiple first acrylate functional groups and the multiple third acrylate functional groups, so that the multiple upper planes are bonded to the third surface of the adhesive layer, wherein the weight ratio of the heat-hardenable material having multiple first acrylate functional groups to the adhesive layer is greater than 50%, and the heat-hardenable material having multiple first acrylate functional groups of the adhesive layer has been heat-hardened, thereby preventing the multiple prisms of the multiple upper planes from penetrating the adhesive layer, wherein the lower surface of the adhesive layer has a structured surface, the structured surface has a second convex shape or a concave shape superimposed on a first convex shape, and the top of the prism of the second optical film has a shape corresponding to the structured surface of the adhesive layer.

4. A method of forming an optical component, characterized in that: Include: Providing a first optical film, wherein the first optical film has a first surface; Providing an adhesive layer, the adhesive layer having a second surface and a third surface opposite to the second surface, wherein the second surface of the adhesive layer is disposed on the first surface of the first optical film, wherein the adhesive layer comprises a heat-hardenable material having a plurality of first acrylate functional groups and a light-hardenable material having a plurality of third acrylate functional groups; Providing a second optical film, the second optical film comprising a plurality of prisms, wherein each of the prisms has an upper plane, wherein the plurality of upper planes of the plurality of prisms comprise a plurality of second acrylate functional groups; performing a heating process to thermally cure the heat-curable material having the first plurality of acrylate functional groups of the adhesive layer, wherein the light-curable material having the third plurality of acrylate functional groups is not cured; and After performing the heating process, a light irradiation process is performed to harden the light-hardenable material having multiple third acrylate functional groups, wherein the multiple second acrylate functional groups of the multiple upper planes of the multiple prisms respectively form bonds with the multiple first acrylate functional groups and the multiple third acrylate functional groups, so that the multiple upper planes are bonded to the third surface of the adhesive layer, wherein the width of each of the upper planes is 1 to 5 microns, and the heat-hardenable material having multiple first acrylate functional groups of the adhesive layer has been heat-hardened, thereby preventing the multiple prisms of the multiple upper planes from penetrating the adhesive layer, wherein the lower surface of the adhesive layer has a structured surface, the structured surface has a second convex shape or a concave shape superimposed on a first convex shape, and the top of the prism of the second optical film has a shape corresponding to the structured surface of the adhesive layer.

5. An optical component, characterized in that: Include: A first optical film having a first surface; an adhesive layer having a second surface and a third surface opposite to the second surface, wherein the second surface of the adhesive layer is disposed on the first surface of the first optical film, wherein the adhesive layer comprises a heat-hardenable material having a plurality of first acrylate functional groups, wherein the lower surface of the adhesive layer has a structured surface having a second convex shape or a concave shape superimposed on a first convex shape; and A second optical film comprises a plurality of prisms, wherein each prism has an upper plane comprising a plurality of second acrylate functional groups, and when bonds between the plurality of first acrylate functional groups and the plurality of second acrylate functional groups are formed in a photoirradiation process so that the upper plane is bonded to the third surface of the adhesive layer, the heat-curable material of the adhesive layer has been heat-cured, thereby preventing the upper plane from penetrating the adhesive layer, wherein the top of the prism of the second optical film has a shape corresponding to the structured surface of the adhesive layer.

6. An optical component, characterized in that: Include: A first optical film having a first surface; an adhesive layer having a second surface and a third surface opposite to the second surface, wherein the second surface of the adhesive layer is disposed on the first surface of the first optical film; and A second optical film comprises a plurality of prisms, wherein the plurality of prisms comprise a plurality of raised portions and a plurality of non-raised portions, wherein the upper plane of each of the plurality of raised portions is respectively bonded to the third surface of the adhesive layer without penetrating the adhesive layer, the plurality of raised portions and the plurality of non-raised portions are arranged alternately, and the plurality of non-raised portions are not in contact with the adhesive layer, wherein the lower surface of the adhesive layer has a structured surface, the structured surface has a second convex shape or a concave shape superimposed on a first convex shape, and the top of the prism of the second optical film has a shape corresponding to the structured surface of the adhesive layer.

7. An optical component, characterized in that: Include: A first optical film having a first surface; an adhesive layer having a second surface and a third surface opposite to the second surface, wherein the second surface of the adhesive layer is disposed on the first surface of the first optical film; and A second optical film comprises a plurality of prisms, wherein the plurality of prisms comprise a plurality of raised portions and a plurality of non-raised portions, wherein the width of the upper plane of each of the plurality of raised portions is 1 to 5 microns, the plurality of raised portions and the plurality of non-raised portions are arranged alternately, and the plurality of non-raised portions are not in contact with the adhesive layer, wherein the lower surface of the adhesive layer has a structured surface, the structured surface has a second convex shape or a concave shape superimposed on a first convex shape, and the top of the prism of the second optical film has a shape corresponding to the structured surface of the adhesive layer.

8. An optical component, characterized in that: Include: A first optical film having a first surface; an adhesive layer having a second surface and a third surface opposite to the second surface, wherein the second surface of the adhesive layer is disposed on the first surface of the first optical film, wherein the adhesive layer comprises a heat-hardenable material having a plurality of first acrylate functional groups, wherein the adhesive layer is made of a homogeneous material, and the homogeneous material comprises light diffusion particles, wherein the lower surface of the adhesive layer has a structured surface, and the structured surface has a second convex shape or a concave shape superimposed on a first convex shape; and A second optical film comprises a plurality of prisms, wherein each prism has an upper plane comprising a plurality of second acrylate functional groups, and when bonds between the plurality of first acrylate functional groups and the plurality of second acrylate functional groups are formed in a photoirradiation process so that the upper plane is bonded to the third surface of the adhesive layer, the heat-curable material of the adhesive layer has been heat-cured, thereby preventing the upper plane from penetrating the adhesive layer, wherein the top of the prism of the second optical film has a shape corresponding to the structured surface of the adhesive layer.

9. An optical component, characterized in that: Include: A first optical film having a first surface; an adhesive layer having a second surface and a third surface opposite to the second surface, wherein the second surface of the adhesive layer is disposed on the first surface of the first optical film, wherein the adhesive layer is made of a homogeneous material, and the homogeneous material includes light diffusion particles; and A second optical film comprises a plurality of prisms, wherein the plurality of prisms comprise a plurality of raised portions and a plurality of non-raised portions, wherein the upper plane of each of the plurality of raised portions is respectively bonded to the third surface of the adhesive layer without penetrating the adhesive layer, the plurality of raised portions and the plurality of non-raised portions are arranged alternately, and the plurality of non-raised portions are not in contact with the adhesive layer, wherein the lower surface of the adhesive layer has a structured surface, the structured surface has a second convex shape or a concave shape superimposed on a first convex shape, and the top of the prism of the second optical film has a shape corresponding to the structured surface of the adhesive layer.

10. An optical component, characterized in that: Include: A first optical film having a first surface; an adhesive layer having a second surface and a third surface opposite to the second surface, wherein the second surface of the adhesive layer is disposed on the first surface of the first optical film; and A second optical film comprises a plurality of prisms, wherein the plurality of prisms comprise a plurality of raised portions and a plurality of non-raised portions, wherein the upper plane of each of the plurality of raised portions is respectively bonded to the third surface of the adhesive layer without penetrating the adhesive layer, wherein the adhesive layer has a hydroxyl functional group and the prisms of the second optical film have an epoxy functional group so that the hydroxyl functional group can open the epoxy functional group to form a bond between the adhesive layer and the prisms of the second optical film, wherein the plurality of raised portions and the plurality of non-raised portions are arranged alternately, and none of the plurality of non-raised portions is in contact with the adhesive layer, wherein the lower surface of the adhesive layer has a structured surface, wherein the structured surface has a second convex shape or a concave shape superimposed on a first convex shape, and the top of the prism of the second optical film has a shape corresponding to the structured surface of the adhesive layer.

Images