A light guide film with a side anti-light leakage structure and a production method thereof

Abstract

The present invention discloses a light guide film with a side leak-proof structure and a production method thereof, belonging to the technical field of light guide films, including a light guide film substrate, an incident light surface layer and a reflected light surface layer. The upper surface of the light guide film substrate is provided with a reflected light surface layer, the lower surface of the light guide film substrate is provided with an incident light surface layer, and a leak-proof mechanism is arranged on the side of the light guide film substrate. The upper end of the leak-proof mechanism covers the side of the reflected light surface layer, and the lower end of the leak-proof mechanism covers the side of the incident light surface layer. In order to solve the problem that light leakage is likely to occur on the side of the light guide film, affecting the use of the whole product and reducing the quality of the product, for the light guide film with a side leak-proof structure and a production method thereof of the present invention, the leak-proof mechanism is attached to the side of the light guide film substrate, the upper end of the leak-proof mechanism covers the side of the reflected light surface layer, and the lower end of the leak-proof mechanism covers the side of the incident light surface layer, so that the leak-proof mechanism prevents light leakage on the side of the light guide film, ensures the normal use of the product, and can improve the product quality.

Description

Technical Field

[0001] The present invention relates to the technical field of light guide films, and particularly relates to a light guide film with a side leakage prevention structure and a production method thereof. Background Art

[0002] Liquid crystals themselves do not emit light, and a corresponding lighting system must be equipped for them. A backlight module usually includes an electric light source, a light guide film, optical film sheets, and a frame. The light guide film is an indispensable component in the backlight device, and its function is to change the overall propagation direction of light. The light emitted by the electric light source attached to the side of the light guide film enters it and is emitted from its front to illuminate the liquid crystal panel.

[0003] Chinese Patent with publication number CN102004269A discloses a light guide film and a preparation method thereof. The light guide film includes a matrix and inorganic scattering particles dispersed in the matrix. Among them, the matrix is silica gel, and the average particle size of the inorganic scattering particles is 5 - 1000 nm. The light guide film disclosed in this patent has a good feel, and has good light output uniformity and light output brightness, and the tensile strength is also greatly improved.

[0004] Chinese Patent with publication number CN101393297 discloses a preparation method of a light guide film, including preparing a light guide film master plate with a light guide pattern on its surface; copying the light guide pattern on the light guide film master plate onto a metal plate to obtain a metal plate with a light guide pattern; using a molding method to transfer the light guide pattern on the metal plate with a light guide pattern to a light guide film precursor to obtain a light guide film. The method provided by this patent transfers the light guide pattern onto the light guide film precursor through copying onto a metal plate and then by a molding method. The thickness of the light guide film precursor can be very thin, so the thickness of the obtained light guide film is very thin. The preparation method of this patent is simple, and the mold development cycle is short, thus reducing the cost of the light guide film.

[0005] However, the above patents have the following defects:

[0006] Light leakage is likely to occur on the side of the light guide film, affecting the use of the entire product and reducing the product quality. Summary of the Invention

[0007] The purpose of the present invention is to provide a light guide film with a side leakage prevention structure and a production method thereof. The leakage prevention mechanism is attached to the side of the light guide film matrix, and the upper end of the leakage prevention mechanism covers the side of the reflective light layer, and the lower end of the leakage prevention mechanism covers the side of the incident light layer, so that the leakage prevention mechanism can prevent light leakage on the side of the light guide film, fully ensuring the normal use of the entire product and improving the product quality, so as to solve the problems raised in the above background art.

[0008] To achieve the above purpose, the present invention provides the following technical solutions:

[0009] A light guide film with a side leakage prevention structure, comprising a light guide film substrate, an incident light surface layer and a reflected light surface layer. The upper surface of the light guide film substrate is provided with the reflected light surface layer, the lower surface of the light guide film substrate is provided with the incident light surface layer, the side of the light guide film substrate is provided with a leakage prevention mechanism, the upper end of the leakage prevention mechanism wraps the side of the reflected light surface layer, and the lower end of the leakage prevention mechanism wraps the side of the incident light surface layer.

[0010] Further, the leakage prevention mechanism includes a first leakage prevention unit and a second leakage prevention unit. The first leakage prevention unit is connected to the lateral side of the light guide film substrate, and the second leakage prevention unit is connected to the longitudinal side of the light guide film substrate.

[0011] Further, the upper end of the first leakage prevention unit is connected to the lateral side of the reflected light surface layer, the lower end of the first leakage prevention unit is connected to the lateral side of the incident light surface layer, the upper end of the second leakage prevention unit is connected to the longitudinal side of the reflected light surface layer, and the lower end of the second leakage prevention unit is connected to the longitudinal side of the incident light surface layer.

[0012] Further, both the first leakage prevention unit and the second leakage prevention unit include a leakage prevention substrate, a light shielding film surface layer and a light shielding glue column. The leakage prevention substrate is provided with the light shielding film surface layer, and the light shielding film surface layer is connected to the sides of the light guide film substrate, the incident light surface layer and the reflected light surface layer through the light shielding glue column.

[0013] Further, one end of the light shielding glue column is connected to the light shielding film surface layer, and the other end of the light shielding glue column penetrates into the light guide film substrate, the incident light surface layer and the reflected light surface layer and the other end of the light shielding glue column is connected to the light guide film substrate, the incident light surface layer and the reflected light surface layer.

[0014] Further, assembly holes for the light shielding glue column to penetrate into and be connected are provided on the sides of the light guide film substrate, the incident light surface layer and the reflected light surface layer.

[0015] According to another aspect of the present invention, a production method of a light guide film with a side leakage prevention structure is provided, including the following steps:

[0016] Using a transparent polymer material and preparing the light guide film substrate, the incident light surface layer and the reflected light surface layer by means of an injection mold. After the light guide film substrate, the incident light surface layer and the reflected light surface layer are prepared;

[0017] Making the reflected light surface layer adhere to the top of the light guide film substrate and the incident light surface layer adhere to the bottom of the light guide film substrate, and pressing and molding the light guide film substrate, the incident light surface layer and the reflected light surface layer;

[0018] The light leakage prevention matrix and the light-shielding film surface layer are prepared by using polymer materials and with the aid of an injection mold. After the light leakage prevention matrix and the light-shielding film surface layer are prepared, the light-shielding film surface layer is attached to the light leakage prevention matrix, and the light leakage prevention matrix and the light-shielding film surface layer are pressed and formed;

[0019] After the light leakage prevention matrix and the light-shielding film surface layer are formed, light-shielding glue is injected into the assembly holes provided on the side edges of the light guide film matrix, the incident light surface layer and the reflected light surface layer, and the light-shielding film surface layer is pressed and combined on the side edges of the light guide film matrix, the incident light surface layer and the reflected light surface layer. After the light-shielding glue solidifies, a light-shielding glue column is formed, and at this time, the production of the light guide film is completed.

[0020] Compared with the prior art, the beneficial effects of the present invention are:

[0021] 1. For the light guide film with a side light leakage prevention structure and its production method of the present invention, a reflected light surface layer is provided on the upper surface of the light guide film matrix, an incident light surface layer is provided on the lower surface of the light guide film matrix, and a light leakage prevention mechanism is provided on the side edge of the light guide film matrix. The upper end of the light leakage prevention mechanism wraps the side edge of the reflected light surface layer, and the lower end of the light leakage prevention mechanism wraps the side edge of the incident light surface layer. By using the light leakage prevention mechanism to fit on the side edge of the light guide film matrix, and the upper end of the light leakage prevention mechanism wraps the side edge of the reflected light surface layer, and the lower end of the light leakage prevention mechanism wraps the side edge of the incident light surface layer, the light leakage prevention mechanism can prevent light leakage from the side of the light guide film, fully ensuring the normal use of the entire product and improving the product quality.

[0022] 2. For the light guide film with a side light leakage prevention structure and its production method of the present invention, both the first light leakage prevention unit and the second light leakage prevention unit include a light leakage prevention matrix, a light-shielding film surface layer and a light-shielding glue column. A light-shielding film surface layer is provided on the light leakage prevention matrix, and the light-shielding film surface layer is connected to the side edges of the light guide film matrix, the incident light surface layer and the reflected light surface layer through the light-shielding glue column. After the light leakage prevention matrix and the light-shielding film surface layer are formed, light-shielding glue is injected into the assembly holes provided on the side edges of the light guide film matrix, the incident light surface layer and the reflected light surface layer, and the light-shielding film surface layer is pressed and combined on the side edges of the light guide film matrix, the incident light surface layer and the reflected light surface layer. After the light-shielding glue solidifies, a light-shielding glue column is formed, making the light guide film matrix, the incident light surface layer and the reflected light surface layer tightly blocked. Description of the Drawings

[0023] Figure 1 Is an axonometric view of the light guide film with a side light leakage prevention structure of the present invention;

[0024] Figure 2 Is a partial sectional view of the light guide film with a side light leakage prevention structure of the present invention;

[0025] Figure 3 Is an exploded view of the light guide film with a side light leakage prevention structure of the present invention;

[0026] Figure 4Isometric view of the second light leakage prevention unit of the present invention.

[0027] In the figure: 1, light guide film substrate; 2, incident light surface layer; 3, reflected light surface layer; 4, light leakage prevention mechanism; 41, first light leakage prevention unit; 411, light leakage prevention substrate; 412, light shielding film surface layer; 413, light shielding glue column; 42, second light leakage prevention unit. Specific embodiments

[0028] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0029] In order to solve the technical problem that light leakage is likely to occur on the side of the existing light guide film, affecting the use of the entire product and reducing the quality of the product, please refer to Figures 1 - 4 , the following technical solutions are provided in this embodiment:

[0030] A light guide film with a side light leakage prevention structure includes a light guide film substrate 1, an incident light surface layer 2, and a reflected light surface layer 3. The reflected light surface layer 3 is provided on the upper surface of the light guide film substrate 1, the incident light surface layer 2 is provided on the lower surface of the light guide film substrate 1, and a light leakage prevention mechanism 4 is provided on the side of the light guide film substrate 1. The upper end of the light leakage prevention mechanism 4 covers the side of the reflected light surface layer 3, and the lower end of the light leakage prevention mechanism 4 covers the side of the incident light surface layer 2.

[0031] Specifically, the light leakage prevention mechanism 4 is attached to the side of the light guide film substrate 1, and the upper end of the light leakage prevention mechanism 4 covers the side of the reflected light surface layer 3, and the lower end of the light leakage prevention mechanism 4 covers the side of the incident light surface layer 2. The light leakage prevention mechanism 4 can prevent light leakage on the side of the light guide film, fully ensure the normal use of the entire product, and improve the product quality.

[0032] It should be noted that the light leakage prevention mechanism 4 includes a first light leakage prevention unit 41 and a second light leakage prevention unit 42. The first light leakage prevention unit 41 is connected to the lateral side of the light guide film substrate 1, and the second light leakage prevention unit 42 is connected to the longitudinal side of the light guide film substrate 1.

[0033] It should be noted that the upper end of the first light leakage prevention unit 41 is connected to the lateral side of the reflected light surface layer 3, the lower end of the first light leakage prevention unit 41 is connected to the lateral side of the incident light surface layer 2, the upper end of the second light leakage prevention unit 42 is connected to the longitudinal side of the reflected light surface layer 3, and the lower end of the second light leakage prevention unit 42 is connected to the longitudinal side of the incident light surface layer 2.

[0034] Specifically, a first light leakage prevention unit 41 and a second light leakage prevention unit 42 are respectively connected to the lateral side edges and longitudinal side edges of the light guide film substrate 1. The upper end of the first light leakage prevention unit 41 is connected to the lateral side edge of the reflected light layer 3, and the lower end of the first light leakage prevention unit 41 is connected to the lateral side edge of the incident light layer 2. The upper end of the second light leakage prevention unit 42 is connected to the longitudinal side edge of the reflected light layer 3, and the lower end of the second light leakage prevention unit 42 is connected to the longitudinal side edge of the incident light layer 2. The first light leakage prevention unit 41 and the second light leakage prevention unit 42 can be used to cover and block the side edges of the light guide film substrate 1, the incident light layer 2, and the reflected light layer 3, avoiding light leakage from the side edges of the light guide film.

[0035] It should be noted that both the first light leakage prevention unit 41 and the second light leakage prevention unit 42 include a light leakage prevention substrate 411, a light shielding film layer 412, and a light shielding adhesive column 413. The light shielding film layer 412 is provided on the light leakage prevention substrate 411, and the light shielding film layer 412 is connected to the side edges of the light guide film substrate 1, the incident light layer 2, and the reflected light layer 3 through the light shielding adhesive column 413.

[0036] Specifically, a polymer material is used and the light leakage prevention substrate 411 and the light shielding film layer 412 are prepared by means of an injection mold. After the light leakage prevention substrate 411 and the light shielding film layer 412 are prepared, the light shielding film layer 412 is attached to the light leakage prevention substrate 411, and the light leakage prevention substrate 411 and the light shielding film layer 412 are press-molded. After the light leakage prevention substrate 411 and the light shielding film layer 412 are molded, light shielding adhesive is injected into the assembly holes provided on the side edges of the light guide film substrate 1, the incident light layer 2, and the reflected light layer 3, and the light shielding film layer 412 is press-fitted to the side edges of the light guide film substrate 1, the incident light layer 2, and the reflected light layer 3. After the light shielding adhesive solidifies, the light shielding adhesive column 413 is formed. At this time, the light shielding film layer 412 is tightly connected to the side edges of the light guide film substrate 1, the incident light layer 2, and the reflected light layer 3 through the light shielding adhesive column 413, making the side edges of the light guide film substrate 1, the incident light layer 2, and the reflected light layer 3 tightly blocked and preventing light leakage from the side edges of the light guide film.

[0037] It should be noted that one end of the light shielding adhesive column 413 is connected to the light shielding film layer 412, and the other end of the light shielding adhesive column 413 penetrates into the light guide film substrate 1, the incident light layer 2, and the reflected light layer 3 and the other end of the light shielding adhesive column 413 is connected to the light guide film substrate 1, the incident light layer 2, and the reflected light layer 3. Assembly holes for the light shielding adhesive column 413 to penetrate into and connect are provided on the side edges of the light guide film substrate 1, the incident light layer 2, and the reflected light layer 3.

[0038] Specifically, after the light leakage prevention matrix 411 and the light shielding film surface layer 412 are formed, a light shielding adhesive is injected into the assembly holes provided on the side edges of the light guide film matrix 1, the incident light surface layer 2, and the reflected light surface layer 3, and the light shielding film surface layer 412 is pressed and bonded to the side edges of the light guide film matrix 1, the incident light surface layer 2, and the reflected light surface layer 3. After the light shielding adhesive solidifies, a light shielding adhesive column 413 is formed, so that the side edges of the light guide film matrix 1, the incident light surface layer 2, and the reflected light surface layer 3 are tightly blocked, preventing light leakage from the side edges of the light guide film.

[0039] To better show the production process of the light guide film with a side light leakage prevention structure, the present embodiment now proposes a production method of a light guide film with a side light leakage prevention structure, including the following steps:

[0040] The light guide film matrix 1, the incident light surface layer 2, and the reflected light surface layer 3 are prepared by using a transparent polymer material and with the aid of an injection mold. After the light guide film matrix 1, the incident light surface layer 2, and the reflected light surface layer 3 are prepared;

[0041] The reflected light surface layer 3 is attached to the top of the light guide film matrix 1 and the incident light surface layer 2 is attached to the bottom of the light guide film matrix 1, and the light guide film matrix 1, the incident light surface layer 2, and the reflected light surface layer 3 are pressed and formed;

[0042] The light leakage prevention matrix 411 and the light shielding film surface layer 412 are prepared by using a polymer material and with the aid of an injection mold. After the light leakage prevention matrix 411 and the light shielding film surface layer 412 are prepared, the light shielding film surface layer 412 is attached to the light leakage prevention matrix 411, and the light leakage prevention matrix 411 and the light shielding film surface layer 412 are pressed and formed;

[0043] After the light leakage prevention matrix 411 and the light shielding film surface layer 412 are formed, a light shielding adhesive is injected into the assembly holes provided on the side edges of the light guide film matrix 1, the incident light surface layer 2, and the reflected light surface layer 3, and the light shielding film surface layer 412 is pressed and bonded to the side edges of the light guide film matrix 1, the incident light surface layer 2, and the reflected light surface layer 3. After the light shielding adhesive solidifies, a light shielding adhesive column 413 is formed, and at this time, the production of the light guide film is completed.

[0044] In summary, for the light guide film with a side light leakage prevention structure and its production method of the present invention, a reflected light surface layer 3 is provided on the upper surface of the light guide film matrix 1, an incident light surface layer 2 is provided on the lower surface of the light guide film matrix 1, a light leakage prevention mechanism 4 is provided on the side edge of the light guide film matrix 1, the upper end of the light leakage prevention mechanism 4 covers the side edge of the reflected light surface layer 3, and the lower end of the light leakage prevention mechanism 4 covers the side edge of the incident light surface layer 2. The light leakage prevention mechanism 4 is used to fit on the side edge of the light guide film matrix 1, and the upper end of the light leakage prevention mechanism 4 covers the side edge of the reflected light surface layer 3, and the lower end of the light leakage prevention mechanism 4 covers the side edge of the incident light surface layer 2, so that the light leakage prevention mechanism 4 can prevent light leakage from the side edge of the light guide film, fully ensuring the normal use of the entire product and improving the product quality.

[0045] As described above, it is only the preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, making equivalent substitutions or changes should be covered within the protection scope of the present invention.

Claims

1. A light guide film with a side leakage prevention structure, comprising a light guide film substrate (1), an incident light surface layer (2) and a reflected light surface layer (3), characterized in that, A reflective light layer (3) is provided on the upper surface of the light guide film substrate (1), an incident light layer (2) is provided on the lower surface of the light guide film substrate (1), a light leakage prevention mechanism (4) is provided on the side of the light guide film substrate (1), the upper end of the light leakage prevention mechanism (4) covers the side of the reflective light layer (3), and the lower end of the light leakage prevention mechanism (4) covers the side of the incident light layer (2); The light leakage prevention mechanism (4) includes a first light leakage prevention unit (41) and a second light leakage prevention unit (42), the first light leakage prevention unit (41) is connected to the lateral side of the light guide film substrate (1), and the second light leakage prevention unit (42) is connected to the longitudinal side of the light guide film substrate (1); Both the first light leakage prevention unit (41) and the second light leakage prevention unit (42) include a light leakage prevention substrate (411), a light shielding film layer (412), and a light shielding adhesive column (413). The light shielding film layer (412) is provided on the light leakage prevention substrate (411), and the light shielding film layer (412) is connected to the sides of the light guide film substrate (1), the incident light layer (2), and the reflective light layer (3) through the light shielding adhesive column (413).

2. The light guide film with a side light leakage prevention structure according to claim 1, characterized in that, The upper end of the first light leakage prevention unit (41) is connected to the lateral side of the reflective light layer (3), the lower end of the first light leakage prevention unit (41) is connected to the lateral side of the incident light layer (2), the upper end of the second light leakage prevention unit (42) is connected to the longitudinal side of the reflective light layer (3), and the lower end of the second light leakage prevention unit (42) is connected to the longitudinal side of the incident light layer (2).

3. The light guide film with a side leakage prevention structure according to claim 2, characterized in that, One end of the light shielding adhesive column (413) is connected to the light shielding film layer (412), and the other end of the light shielding adhesive column (413) penetrates into the light guide film substrate (1), the incident light layer (2), and the reflective light layer (3), and the other end of the light shielding adhesive column (413) is connected to the light guide film substrate (1), the incident light layer (2), and the reflective light layer (3).

4. The light guide film with a side light leakage prevention structure according to claim 3, characterized in that Assembly holes for the light shielding adhesive column (413) to penetrate into and connect are provided on the sides of the light guide film substrate (1), the incident light layer (2), and the reflective light layer (3).

5. A production method of a light guide film with a side leakage prevention light structure as described in any one of claims 1-4, characterized in that, Including the following steps: Using a transparent polymer material and with the aid of an injection mold to prepare the light guide film substrate (1), the incident light layer (2), and the reflective light layer (3). After the light guide film substrate (1), the incident light layer (2), and the reflective light layer (3) are prepared; Making the reflective light layer (3) adhere to the top of the light guide film substrate (1) and the incident light layer (2) adhere to the bottom of the light guide film substrate (1), and pressing the light guide film substrate (1), the incident light layer (2), and the reflective light layer (3) into shape; Using a polymer material and with the aid of an injection mold to prepare the light leakage prevention substrate (411) and the light shielding film layer (412). After the light leakage prevention substrate (411) and the light shielding film layer (412) are prepared, making the light shielding film layer (412) adhere to the light leakage prevention substrate (411), and pressing the light leakage prevention substrate (411) and the light shielding film layer (412) into shape; After the light leakage prevention matrix (411) and the light-shielding film surface layer (412) are formed, a light-shielding adhesive is injected into the assembly holes provided on the side edges of the light guide film matrix (1), the incident light surface layer (2), and the reflected light surface layer (3), and the light-shielding film surface layer (412) is pressed against the side edges of the light guide film matrix (1), the incident light surface layer (2), and the reflected light surface layer (3). After the light-shielding adhesive solidifies, a light-shielding adhesive column (413) is formed, and at this time, the production of the light guide film is completed.

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