TWM625019U - Laminating sheet for optical film - Google Patents

Abstract

A lamination sheet for an optical film is suitable for adsorbing an optical film, and comprises a main body and a microstructure layer disposed on the top surface of the main body. The body includes a bottom surface and a top surface on the opposite side of the bottom surface. The microstructure layer includes an adhesive surface far away from the top surface and suitable for contacting the optical film, and a plurality of inward recesses from the adhesive surface spaced apart from each other, and used for shrinking when external force is applied to make the adhesive surface evenly fit The depressed portion of the optical film. With the arrangement of the adhesive surface and the concave portions, the flatness and precision of attaching the optical film can be improved, and the generation of air bubbles and indentation lines can be reduced, thereby improving the yield of the attaching process.

Description

Laminate Sheets for Optical Films

The present invention relates to a laminated sheet, in particular to a laminated sheet used for optical films.

Referring to FIG. 1, a conventional laminating device 7 disclosed in Patent Publication No. 297835 of the Republic of China is suitable for adsorbing and fixing a flexible substrate 8 and enabling the flexible substrate 8 to be attached to a glass substrate, It also includes a substrate 71 with a mounting surface 711 , six suction cups 72 disposed on the mounting surface 711 of the substrate 71 at intervals and suitable for fixing the flexible substrate 8 , and a suction cup 72 disposed on the substrate 71 and A vacuum generator 73 for providing the suction cups 72 to generate suction. When the operation of attaching the flexible base material 8 to the glass substrate is performed, the operator first drives the vacuum generator 73 to make the suction cups 72 generate suction to attract and fix the flexible base material 8 so that the flexible base material 8 can be fixed. The material 8 can be stably conveyed to the position where the glass substrate is to be attached, and the attachment operation can be performed.

However, because the suction cups 72 use the suction force generated by the vacuum generator 73 to adsorb and fix the flexible substrate 8, the part of each suction cup 72 in contact with the flexible base material 8 is easily affected by the suction force When the flexible substrate 8 is attached to the glass substrate, when the flexible substrate 8 is attached to the glass substrate, the problem of attaching air bubbles or attaching creases is easy to occur at the contact portion of each suction cup 72 and the flexible substrate 8. Therefore, the existing laminating device 7 still needs to be improved.

Therefore, the objective of this novel is to provide a bonding sheet for an optical film.

Therefore, the novel laminated sheet for an optical film is suitable for adsorbing an optical film, and includes a main body and a microstructure layer disposed on the top surface of the main body.

The body includes a bottom surface and a top surface on the opposite side of the bottom surface.

The microstructure layer includes an adhesive surface far away from the top surface and suitable for contacting the optical film, and a plurality of inward recesses from the adhesive surface spaced apart from each other, and used for shrinking when external force is applied to make the adhesive surface evenly fit The depressed portion of the optical film.

The effect of the present invention lies in: by combining the adhesive surface with the structural design of the recessed portions, the adhesive surface can be completely and uniformly attached to the optical film, thereby preventing the optical film from being recessed toward the microstructure layer. situation, thereby improving the production yield of subsequent processes.

Referring to FIGS. 2 and 3 , it is an embodiment of a novel laminating sheet for optical films. This embodiment is suitable for adsorbing an optical film 9 and includes a main body 1 and a microstructure layer disposed on the main body 1 . 2. Several fixing holes 3 are respectively arranged on both sides of the main body 1 . It should be explained in advance that this embodiment is set in an attaching machine, and the optical film 9 can be fixed flatly, so that when the optical film 9 is attached to a glass substrate, it is not easy to have air bubbles, folds, etc. The case where the bubble line is generated by the indentation or the initial line indentation will be described, but the present embodiment is not limited to the above-mentioned usage.

In this embodiment, the optical film 9 is illustrated by taking a polarizer as an example, but it can also be a wide viewing angle film, an optical compensation film, an optical brightness enhancement film, a PE protective film, etc., which is not limited thereto.

The body 1 includes a bottom surface 11 and a top surface 12 on the opposite side of the bottom surface 11 . The material of the body 1 is made of stainless steel, metal aluminum, polyethylene, polypropylene or acrylic, and the thickness is in the range of 0.01 mm to 1 mm, preferably, the thickness is in the range of 0.05 mm Between millimeters and 0.3 millimeters, when the thickness of the main body 1 is too thin, there will be a disadvantage of insufficient mechanical strength, and when the thickness is too thick, it is not conducive to subsequent process operations because it is not easily bent by external forces. In this embodiment, the main body 1 is a stainless steel plate with a thickness of 0.05 mm.

The microstructure layer 2 includes an adhesive surface 21 away from the top surface 12 and suitable for contacting the optical film 9 , and a plurality of recesses 22 spaced apart from each other and recessed inward from the adhesive surface 21 . The microstructure layer 2 is made of one of silicone glue, PVC glue, OCA glue, rubber or AB mixed glue, and the thickness is between 1 μm and 500 μm. Preferably, the microstructure layer 2 is Made of silicone material with a thickness of 50 microns. In addition, the area of the microstructure layer 2 is smaller than that of the main body 1 , so that there are areas on both sides of the main body 1 for arranging the fixing holes 3 respectively, and the area of the microstructure layer 2 can be selected according to the To adjust the size of the optical film 9 , the optical film 9 must be completely adhered to the microstructure layer 2 .

4, 5 and FIG. 3, the microstructure layer 2 is formed on the top surface 12 of the main body 1 by spraying, and the depressions 22 are formed by gravure printing to form each depression The shape of the part 22, the shape of each recessed part 22 is one of L-shaped, cross-shaped, elongated, circular, or oval, and every two adjacent recessed parts 22 are connected to each other or not. connected. In FIG. 4 , each recessed portion 22 is circular and arranged in an array. In FIG. 5 , each recessed portion 22 is elongated and arranged in a staggered manner. The adhesive surface 21 has different shapes corresponding to the shape of each concave portion 22. As shown in FIG. 4 from a top view, the adhesive surface 21 is composed of several circular shapes. As shown in FIG. 5 From the top view, it is composed of several diamond shapes, but the implementation is not limited by the above.

It should be noted that, when the optical film 9 is attached to the glass substrate subsequently, the protective film of the optical film 9 will be peeled off first and then attached to the glass substrate. Therefore, the adhesive force provided by the adhesive surface 21 and the adsorption force provided by the concave portions 22 need to be greater than the force for tearing off the protective film of the optical film 9, so as to avoid the tearing of the protective film. The optical film 9 is taken away from the original fixed position, and poor attachment occurs.

Referring back to FIGS. 2 and 3 , the fixing holes 3 are respectively disposed on both sides of the main body 1 and penetrate through the top surface 12 and the bottom surface 11 . In this embodiment, the number of the fixing holes 3 is eight, and the fixing holes 3 are respectively arranged on both sides of the main body 1 in a group of four. The fixing holes 3 mainly allow the main body 1 to be fixed on the attaching machine, and the number of the fixing holes 3 is adjusted according to the actual fixing requirements, which is not a limitation.

Referring to FIGS. 6 to 8 , when in use, the operator first uses several fasteners to pass through the fixing holes 3 (only one is shown in FIG. 6 due to the viewing angle), so that the main body 1 is screwed to the attachment machine, and transport the optical film 9 to the top of the main body 1, align the optical film 9 with the position of the microstructure layer 2, and then use the roller to roll the bottom surface 11 of the main body 1. At this time, The adhesive surface 21 will be compressed and displaced toward the concave portions 22, so as to force each concave portion 22 to contract and deform inwardly, so that the air originally located in each concave portion 22 is discharged, that is, the optical film 9 and each concave portion 22 will be in an airtight state, so that the optical film 9 can be uniformly absorbed, and the optical film 9 can be evenly attached to the optical film 9 with the adhesive force provided by the material of the adhesive surface 21 itself. film 9 , thereby reducing the depression of the optical film 9 toward the microstructure layer 2 . In addition, the evenly distributed arrangement of the concave portions 22 can not only provide the adsorption force for evenly adsorbing the optical film 9, but also allow the adhesive surface 21 to have a telescopic displacement when the adhesive surface 21 is squeezed by an external force. There is no space for the adhesive surface 21 to bulge, resulting in unevenness when attaching the optical film 9 .

An embodiment shown in FIG. 8, in this embodiment, the material of the main body 1 can also be one of polyester fiber cloth, nylon cloth, fiber mesh cloth or PET dust-free cloth, mainly It enables the operator to choose and change according to the actual working environment and conditions, and has better applicability.

To sum up, the adhesive sheet used for the optical film of the present invention has a good adhesion between the microstructure layer 2 and the optical film 9 by matching the structural design of the concave portions 22 with the adhesive surface 21 . The bonding relationship can be achieved, and a comprehensive and flat adsorption bonding effect can be obtained, so that the production yield of the bonding process can be improved. Therefore, the purpose of this new model can indeed be achieved.

However, the above are only examples of the present invention, which should not limit the scope of the present invention. Any simple equivalent changes and modifications made in accordance with the scope of the patent application for this new model and the contents of the patent specification are still within the scope of the present invention. within the scope of this new patent.

1: Ontology 11: Bottom surface 12: Top surface 2: Microstructure layer 21: sticky side 22: Depressed part 3: Fixing hole 9: Optical film

Other features and effects of the present invention will be clearly presented in the embodiments with reference to the drawings, wherein: 1 is a top view illustrating a conventional bonding device; FIG. 2 is a top view illustrating an embodiment of the novel laminated sheet for optical films; FIG. 3 is a partial cross-sectional view illustrating the relative relationship of the elements of this embodiment; 4 is a top view illustrating the shape and arrangement of an adhesive surface and a plurality of recesses in this embodiment; 5 is a top view illustrating another structural aspect of the adhesive surface and the concave portions of the embodiment; Fig. 6 is a schematic diagram illustrating the use state of this embodiment; FIG. 7 is a schematic diagram illustrating a state in which each concave portion of the embodiment is contracted by an external force; and FIG. 8 is a schematic diagram illustrating another variation of a body in this embodiment.

1: Ontology

11: Bottom surface

12: Top surface

2: Microstructure layer

21: sticky side

22: Depressed part

3: Fixing hole

Claims (7)

A lamination sheet for an optical film, suitable for adsorbing an optical film, and comprising: a body, including a bottom surface, and a top surface on the opposite side of the bottom surface; A microstructure layer is disposed on the top surface of the main body, and includes an adhesive surface far away from the top surface and suitable for contacting the optical film, and a plurality of inward recesses from the adhesive surface spaced apart from each other, and used for receiving When the external force shrinks, the adhesive surface is evenly attached to the concave part of the optical film. The laminated sheet for optical films according to claim 1, wherein the body is stainless steel, metal aluminum, polyethylene, polypropylene, acrylic, polyester fiber cloth, nylon cloth, fiber mesh cloth or It is one of the PET dust-free cloths. The laminated sheet for an optical film according to claim 1, wherein the thickness of the body is between 0.01 mm and 1 mm. The laminated sheet for optical films according to claim 1, wherein the microstructure layer is made of one of silicone glue, PVC glue, OCA glue, rubber or AB mixed glue. The laminated sheet for an optical film according to claim 1, wherein the thickness of the microstructure layer is between 1 micrometer and 500 micrometers. The laminated sheet for an optical film according to claim 1, wherein the shape of each recessed portion is one of an L-shape, a cross-shape, an elongated shape, a circular shape, or an oval shape. The laminated sheet for an optical film according to claim 1, further comprising a plurality of fixing holes respectively disposed on both sides of the main body and passing through the top surface and the bottom surface.

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