CN214474162U - Fixing structure of optical diaphragm assembly and optical diaphragm assembly - Google Patents

Abstract

The utility model relates to a fixed knot of optics diaphragm subassembly constructs and optics diaphragm subassembly, and fixed knot constructs and includes: a protrusion extending outward from one side of the optical film; the groove is arranged on the rubber frame and is matched with the bulge; a sticking portion extending outward from one side edge of the optical film; the sinking groove is arranged on the rubber frame, and a sinking surface is formed on the rubber frame and corresponds to the position of the pasting part on the optical diaphragm; and the double-sided adhesive tape is adhered to the sinking surface. The utility model also discloses an optics diaphragm subassembly, including multilayer optics diaphragm and above-mentioned fixed knot structure. The bulge on the optical diaphragm is matched with the groove on the rubber frame, so that the optical diaphragm can be quickly positioned on the rubber frame; the sticking part on the optical membrane is stuck with the sinking groove on the rubber frame through the double faced adhesive tape, and the bottom surface of the optical membrane can be directly stuck and fixed with the rubber frame through the double faced adhesive tape during production, so that the operation is convenient and the efficiency is high; when needing to reprocess, can directly tear and change the optics diaphragm, the reprocess is simple.

Description

Fixing structure of optical diaphragm assembly and optical diaphragm assembly

Technical Field

The utility model relates to an optics diaphragm technical field especially relates to fixed knot of optics diaphragm subassembly constructs and optics diaphragm subassembly.

Background

The fixing structure of the existing optical film assembly is as follows: directly place the optics diaphragm in gluey frame, then tear the protection film on the protruding ear of diaphragm, paste a single face and glue on the ear, turn over the single face again and turn over and paste on gluey frame to fix the diaphragm and gluey frame together, prevent that the optics diaphragm from removing the off normal, after the single face is glued and is pasted, need smooth the protection film on the ear again and reset, flow to next process again. However, there are three problems with this type of fixation:

(1) in order to facilitate the assembly of the optical film, the size of the adhesive frame is generally larger than that of the optical film, the optical film may move after being placed in the adhesive frame, and the optical film is easily dislocated in the subsequent process of being fixed by the single-sided adhesive because the optical film is not fixed.

(2) When the single-sided adhesive is fixed, the protective film part on the optical film needs to be torn off firstly, then the single-sided adhesive is pasted, and after the single-sided adhesive is pasted, the protective film needs to be flattened and reset, so that the process is complicated, and the production efficiency is low.

(3) After the optics diaphragm is assembled, need further carry out the inspection of diaphragm, if find on the diaphragm have black and white point, when bad problems such as foreign matter or fish tail, then need tear the single face of fixed diaphragm and glue, just can reprocess or change unqualified diaphragm, and the single face of fixed diaphragm glues and often can report to be abandoned, need paste a new single face again and glue and fix the diaphragm, the operation of the process of reprocessing is complicated, and causes the waste of single face and glues, and production efficiency is lower.

SUMMERY OF THE UTILITY MODEL

Therefore, it is necessary to provide a fixing structure of an optical film assembly and the optical film assembly, which can rapidly realize the installation of the optical film assembly and improve the production efficiency, aiming at the problems that the optical film assembly is easy to be dislocated and the production and repair efficiency is low.

A fixing structure of an optical film assembly, the fixing structure comprising:

a protrusion extending outward from one side of the optical film;

the groove is arranged on the rubber frame and is matched with the bulge;

a sticking portion extending outward from one side edge of the optical film;

the sinking groove is arranged on the rubber frame, a sinking surface is formed on the rubber frame, and the sinking groove corresponds to the position of the pasting part on the optical diaphragm;

and the double-sided adhesive tape is adhered to the sinking surface and used for adhering the adhering part with the sinking groove.

The bulge extending outwards is arranged on any side edge of the optical diaphragm, and the groove matched with the bulge is arranged on the rubber frame, so that the optical diaphragm can be effectively and quickly positioned on the rubber frame and is not easy to shift; in addition, any side edge of the optical membrane is provided with an outward extending pasting part, the glue frame is also provided with a sinking groove, and a double-faced adhesive tape for pasting the optical membrane and the glue frame is arranged in the sinking groove, so that the bottom surface of the optical membrane and the glue frame can be directly pasted and fixed through the double-faced adhesive tape in the production process, a protective film does not need to be torn, and the operation is convenient and the efficiency is high; when needing to reprocess, the accessible directly changes optical film piece, and the reprocess is simple.

In one embodiment, the number of the grooves is multiple, at least one sinking groove is arranged between two grooves, and the distance between the sinking groove and the groove is 5mm-15 mm. If the distance is too far, the optical film is likely to be bonded insecurely and easily warped; the distance is too small, the consumption of the double-sided adhesive tape is increased, and resources are wasted, so that the pasting quality can be ensured while resources are saved in the distance range.

In one embodiment, the protruding part is a dovetail part, the groove is a dovetail groove, the dovetail part is connected with the optical diaphragm through a stable triangular structure, the joint is not prone to breaking and bending, the strength is good, the dovetail structure is adopted, and the injection mold and the diaphragm processing mold are simple in structure, easy to process, high in efficiency and good in stability.

In one embodiment, the ratio of the width of the bottom edge of the dovetail groove to the depth of the groove is 5-8: 1, the bevel angle of the dovetail groove is 30-60 degrees.

In one embodiment, one surface of the double-sided adhesive tape is attached to the sinking surface of the sinking groove, and the other surface of the double-sided adhesive tape is attached to the bottom of the attaching part.

In one embodiment, the sinking groove is communicated with the inner side of the frame body of the rubber frame, the pasting part extends into the sinking groove, the upper surface of the pasting part is flush with the upper surface of the rubber frame, the sinking groove is communicated with the inner side of the frame body of the rubber frame, and the pasting part can directly extend into the sinking groove conveniently, so that the upper surface of the optical film is smooth and does not wrinkle.

In one embodiment, the adhesion of the side of the double-sided adhesive tape attached to the sinking groove is greater than the adhesion of the side of the double-sided adhesive tape attached to the optical film.

In one embodiment, the ratio of the viscosity of the side, attached to the sinking groove, of the double-sided adhesive tape to the viscosity of the side, attached to the optical film is 4:3, when the film is found to have a bad problem in the inspection process and needs to be repaired, a film pasting worker needs to tear the optical film, the double-sided adhesive tape cannot be taken away by the optical film due to the fact that the adhesive force of the double-sided adhesive tape, which is stuck to the sinking groove, is large, and the double-sided adhesive tape is still stuck to the plastic part, namely the double-sided adhesive tape can be reused, material loss is reduced, the double-sided adhesive tape does not need to be attached again, operation is simple, and production efficiency is high.

The utility model also provides an optics diaphragm subassembly, including multilayer optics diaphragm and above-mentioned arbitrary one fixed knot construct, multilayer optics diaphragm is including the superiors ' optics diaphragm and the bottom optics diaphragm that stack in proper order, the bellying sets up on the superiors ' optics diaphragm and bottom optics diaphragm, the portion of pasting sets up on the superiors ' optics diaphragm.

In one embodiment, the uppermost optical film is an upper brightness enhancement film, the bottom optical film comprises a lower brightness enhancement film and a diffusion film, the lower brightness enhancement film is arranged between the upper brightness enhancement film and the diffusion film, a dovetail part extending outwards is arranged on the bottom optical film, a sticking part is not arranged, and the dovetail part is matched with a dovetail groove on a rubber frame, so that the bottom optical film is prevented from moving and deviating; set up outside extension's forked tail portion on the superiors ' optical film, set up the portion of pasting again, paste optical film and gluey frame through the double faced adhesive tape that sets up in the heavy groove, fix superiors ' optical film and bottom optical film in gluey frame, need not to tear upper protection film in process of production, paste the back, also need not to smooth the protection film and reset, the operation degree of difficulty reduces and efficient.

According to the fixing structure of the optical diaphragm assembly and the optical diaphragm assembly, the bulge extending outwards is arranged on any one side edge of the optical diaphragm, and the groove matched with the bulge is arranged on the rubber frame, so that the optical diaphragm can be effectively and quickly assembled on the rubber frame and is not easy to shift; in addition, any side edge of the optical diaphragm is provided with a sticking part extending outwards, the glue frame is also provided with a sinking groove, and a double-faced adhesive tape for sticking the optical diaphragm and the glue frame is arranged in the sinking groove; when needing to reprocess, the accessible directly changes optical film piece, and the reprocess is simple.

Drawings

FIG. 1 is a diagram of an embodiment of an optical film assembly;

FIG. 2 is an enlarged view of the structure at A in FIG. 1;

FIG. 3 is a view showing the structure of the rubber frame of FIG. 1;

fig. 4 is a view showing the structure of the optical film of fig. 1.

Reference numerals: 1. an optical film; 2. a rubber frame; 11. a boss portion; 12. a sticking part; 21. a groove; 22. sinking a groove; 23. and (4) double-sided adhesive tape.

Detailed Description

In order to make the above objects, features and advantages of the present invention more comprehensible, embodiments of the present invention are described in detail below with reference to the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein, as those skilled in the art will be able to make similar modifications without departing from the spirit and scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", and the like, indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present invention, "a plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

In the present invention, unless otherwise expressly stated or limited, the terms "mounted," "connected," and "fixed" are to be construed broadly and may, for example, be fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.

In the present application, unless expressly stated or limited otherwise, the first feature may be directly on or directly under the second feature or indirectly via intermediate members. Also, a first feature "on," "over," and "above" a second feature may be directly or diagonally above the second feature, or may simply indicate that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature may be directly under or obliquely under the first feature, or may simply mean that the first feature is at a lesser elevation than the second feature.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like as used herein are for illustrative purposes only and do not denote a unique embodiment.

The optical film assembly is a core component of the backlight product, and is easily bad due to environment or improper operation in the production and assembly process, so the bottleneck of the backlight production lies in the assembly operation of the optical film assembly, commonly called the film pasting operation, and an excellent film pasting person needs to learn for several months, and the film pasting efficiency directly affects the production of the whole production. The fixing structure of the existing optical film assembly is as follows: directly place the optics diaphragm in gluey frame, then tear the protection film on the salient ear of the superiors' diaphragm, paste a single face on the ear and glue, turn over the single face again and turn over and paste on gluey frame to fix the diaphragm together with gluey frame, prevent that the optics diaphragm from removing the off normal, after the single face is glued and is pasted, need smooth the protection film on the ear again and reset, flow to next process again. Therefore, the problems of easy dislocation and low production and repair efficiency exist in the production process of the optical film component.

Referring to fig. 1-3, fig. 1 shows a structure diagram of an optical diaphragm assembly in an embodiment of the present invention, fig. 2 shows an enlarged structure diagram of a point a of the optical diaphragm assembly in an embodiment of the present invention, fig. 3 shows a structure diagram of a rubber frame in the optical diaphragm assembly in an embodiment of the present invention, an embodiment of the present invention provides a fixing structure of an optical diaphragm assembly and an optical diaphragm assembly, in which the fixing structure includes a protrusion 11 extending outward from one side of an optical diaphragm 1; the groove 21 is arranged on the rubber frame 2 and is matched with the bulge part 11; a sticking portion 12 extending outward from one side edge of the optical film 1; the sinking groove is arranged on the rubber frame, a sinking surface is formed on the rubber frame, and the sinking groove corresponds to the position of the pasting part on the optical diaphragm; and the double-sided adhesive tape is adhered to the sinking surface and used for adhering the adhering part with the sinking groove.

The utility model discloses a structure that bellying 11 and recess 21 cooperate can only set up in wherein any one side, during the pad pasting, only aim at bellying 11 and recess 21, can fix a position the optics diaphragm, when specifically using, set up and outwards extend at one side of optics diaphragm 1 and have bellying 11, set up the recess 21 with bellying 11 matched with on the corresponding side on gluey frame 2, during the use, at first fix a position optics diaphragm 1 in gluey frame 2 fast through bellying 11 and recess 21, and be difficult to take place to shift; in addition, an outward extending pasting part 12 is further arranged on one side edge of the optical film 1 provided with the protruding part 11, a sinking groove 22 is further arranged on the corresponding side edge of the rubber frame 2, a double-faced adhesive tape 23 for pasting the optical film 1 and the rubber frame 2 is arranged in the sinking groove 22, the optical film 1 and the rubber frame 2 can be directly pasted and fixed through the double-faced adhesive tape 23 in the production process, a protective film does not need to be torn, and the operation is convenient and the efficiency is high; when needing to reprocess, the accessible is direct to be changed optical film 1, and the process of reprocessing is simple.

Referring to fig. 3, fig. 3 shows a structure diagram of a glue frame in an optical film assembly according to an embodiment of the present invention, the number of the grooves 21 is plural, at least one sinking groove 22 is provided between two of the grooves 21, and the distance between the sinking groove 22 and the groove 21 is 5mm-15 mm. The number of the sinking grooves 22 can be determined according to the actual specification of the optical membrane assembly, when the optical membrane assembly is in a smaller specification, the positions, close to right angles of two sides, of any side edge of the rubber frame 2 are respectively provided with the grooves 21, the positions, corresponding to the side edges, of the optical membrane 1 are provided with the protruding parts 11, the middle position of each groove 21 is provided with one sinking groove 22, the middle position of each protruding part 11 is correspondingly provided with one pasting part 12, the distance between each sinking groove 22 and each groove 21 is 5mm-15mm, through the arrangement of one sinking groove 22, the optical membrane 1 can be ensured not to be warped, a worker only needs to paste the double-faced adhesive tape 23 once, and can directly paste the optical membrane assembly without tearing off an upper protective film during pasting, and the working efficiency is high; when the optical film subassembly is great specification, glue frame 2 arbitrary one side and set up recess 21 respectively near the right-angled position department in both sides, the position department that corresponds the side on optical film 1 sets up bellying 11, set up heavy groove 22 respectively in the position department that is 5mm-15mm apart from every recess 21, the position department that corresponds heavy groove 22 on optical film 1 sets up portion of pasting 12, promptly through setting up a plurality of heavy grooves 22, increase the area of pasting to guarantee that optical film 1 is whole pastes firmly, does not upwarp.

Referring to fig. 2, fig. 2 is an enlarged structural view of an optical film assembly at a position a in an embodiment of the present invention, in some embodiments, the protruding portion 11 is a dovetail, and the groove 21 is a dovetail groove. By providing the protrusions 11 only on either side of the optical film 1, the protrusions 11 are dovetail-shaped, the rubber frame 2 corresponding to the edge is provided with a groove 21, the groove 21 is a dovetail groove matched with the boss 11, because the dovetail structure can limit the movement of the optical film in two directions, namely, a convex part 11 is arranged on any one side of the optical film, a groove 21 is arranged on the rubber frame 2 corresponding to the side, namely, the optical film 1 can be limited to move on the whole horizontal plane in the rubber frame 2, and compared with the arrangement of the groove 21 and the boss 11 as rectangular structures, the rectangular structures need to be arranged on at least two sides to play the role of limiting the movement of the optical film 1 on the horizontal plane in the rubber frame 2, therefore, the groove 21 is arranged to be a dovetail groove, and the boss 11 is arranged to be a dovetail, so that the production process can be simplified, and the production efficiency can be improved.

Referring to fig. 4, fig. 4 shows a structure diagram of an optical film in an optical film assembly according to an embodiment of the present invention, where a ratio of a width of a bottom edge of the dovetail groove to a depth of the groove is 5 to 8: 1, the oblique angle of dovetail is 30-60, the oblique angle of preferred dovetail can set up to 45, through the setting of specific forked tail structure, can make and extend out the forked tail portion and have certain intensity, for the setting that changes into forked tail structure T type structure, T type bellying comprises a horizontal pole and the montant that extends out, be connected with optical diaphragm through the montant, T type bellying is bent or takes place the condition of breaking at the montant part more easily, intensity is lower, and forked tail portion is connected with optical diaphragm through stable triangle structure, the junction is difficult for breaking, be difficult for bending, good strength, and adopt the forked tail structure, injection mold and diaphragm mold processing structure are simpler, workable, high efficiency, good stability.

In some embodiments, one side of the double-sided adhesive tape is attached to the sinking surface of the sinking groove, and the other side of the double-sided adhesive tape is attached to the bottom of the attaching portion.

In some embodiments, the sinking groove is communicated with the inner side of the frame body of the rubber frame, the pasting part extends into the sinking groove, and the upper surface of the pasting part is flush with the upper surface of the rubber frame. In practical use, in order to facilitate the adhesion of the double-sided adhesive tape 23, the sinking groove 22 can be set to be rectangular, the adhesion part 12 is also set to be rectangular, the size of the adhesion part 12 is smaller than that of the sinking groove 22, the sinking groove 22 is communicated with the inner side of the frame body of the adhesive frame 2, the adhesion part 12 directly extends into the sinking groove 22 and is fixed with the sinking groove 22 through the double-sided adhesive tape, and the upper surface of the optical film is smooth and is not wrinkled due to the arrangement of the sinking groove 22.

Furthermore, the viscosity of the side, attached to the sinking groove 22, of the double-sided adhesive tape 23 is greater than the viscosity of the side, attached to the optical film 1, of the double-sided adhesive tape 23, and the ratio of the viscosity of the side, attached to the sinking groove 22, of the double-sided adhesive tape 23 to the viscosity of the side, attached to the optical film 1, of the double-sided adhesive tape is 4: 3. In actual use, the following settings can be set: the adhesive force of the double-sided adhesive tape 23 stuck on one side of the sinking groove 22 is 2000g/25mm, the adhesive force of the double-sided adhesive tape stuck on one side of the optical film 1 is 1500g/25mm, wherein the unit g/25mm means that the double-sided adhesive tape with the width of 25mm is selected, one side of the double-sided adhesive tape is fixed, and the other side of the double-sided adhesive tape is pulled through an adhesive force meter, namely the adhesive force meter can test the adhesive force of one side of the double-sided adhesive tape. After optical film 1 assembles, need light the inspection in clean canopy, if find that there is black and white point on optical film 1, when bad problems such as foreign matter or fish tail, need choose back pad pasting personnel and reprocess, this moment, the pad pasting personnel need tear optical film 1, because the adhesion force of pasting in heavy groove 22 one side is big, double faced adhesive tape 23 can not taken away by optical film 1, still paste on the plastic part, double faced adhesive tape can reuse promptly, thereby reduce the material loss, secondly also need not to paste a double faced adhesive tape 23 again, and the operation is simple, and the production efficiency is high.

The utility model also provides an optical diaphragm component, which comprises a multilayer optical diaphragm and a fixed structure, wherein the fixed structure comprises a convex part 11 which extends outwards from one side edge of the optical diaphragm 1; the groove 21 is arranged on the rubber frame 2 and is matched with the bulge part 11; a sticking portion 12 extending outward from one side edge of the optical film 1; the sinking groove is arranged on the rubber frame, a sinking surface is formed on the rubber frame, and the sinking groove corresponds to the position of the pasting part on the optical diaphragm; and the double-sided adhesive tape is adhered to the sinking surface and used for adhering the adhering part with the sinking groove.

Multilayer optical film is including the superiors optical film and the bottom optical film that stack in proper order, bellying 11 sets up on the superiors optical film and the bottom optical film, portion 12 sets up on the superiors optical film.

In some embodiments, in order to ensure that the upper surface of the pasting part 12 is flush with the upper surface of the frame 2, the depth of the sinking groove 22 is generally the sum of the thickness of the double-sided tape 23 and the thickness of the uppermost optical film.

Further, the uppermost layer optical film is an upper brightness enhancement film, the bottom optical film comprises a lower brightness enhancement film and a diffusion film, and the lower brightness enhancement film is arranged between the upper brightness enhancement film and the diffusion film.

Multilayer optical film is formed by three-layer optical film stack at least, and three-layer optical film from the top down is in proper order for last membrane of adding lustre to, membrane of adding lustre to and diffusion barrier down, and when in actual use, need place three-layer optical film in gluey frame 2 in proper order, then glue the upper portion of the superiors' optical film and glue the frame framework through the single face and paste fixedly, in the current product, generally directly place bottom optical film in gluing frame 2, the optical film of the superiors passes through the single face and glues with gluing frame 2 fixedly. In order to facilitate the assembly of the optical film 1, the size of the rubber frame 2 is generally larger than that of the optical film 1, and the optical film at the bottom moves in the rubber frame because of no fixing effect, thereby affecting the use effect of the optical film assembly. Therefore, the bottom optical diaphragm of the utility model is provided with the dovetail part extending outwards without the sticking part 12, and the dovetail part is matched with the dovetail groove on the rubber frame 2, thereby preventing the bottom optical diaphragm from moving and deviating; both set up outside extension's forked tail portion on the superiors ' optical film, set up pasting portion 12 again, paste optical film 1 and gluey frame 2 through double faced adhesive tape 23 that sets up in heavy groove 22, all fix superiors ' optical film and bottom optical film in gluey frame 2, paste fixedly in the production process and need not to tear upper protection film, paste the back, also need not to smooth the protection film and reset, the operation degree of difficulty reduces and efficient.

The optical film 1 is fixed by the dovetail structure on the rubber frame 2 and the double-sided adhesive tape 23 pre-pasted on the sinking groove 22, the double-sided adhesive tape 23 can arrange that non-film pasting personnel paste the film firstly, only the diffusion sheet, the lower light adding film and the upper light adding film are sequentially pasted on a preset position during film pasting, the film pasting personnel can effectively improve the assembly efficiency because the fixing adhesive is not needed to paste again, meanwhile, the process is simple and easy to operate, the production efficiency of the backlight source can be improved to a great extent, and in addition, because the prior operation process is complex, the vertical assembly operation can not be realized, and the automatic film pasting production is difficult to realize, the fixing structure of the optical film component of the utility model can change the film pasting assembly operation into the operation capable of vertical lamination, and can be produced and operated by an automatic laminating machine, the production efficiency and the product quality of the product and the problem of consistent stability of the product are greatly improved.

In summary, in the fixing structure of the optical film assembly and the optical film assembly, the protrusion extending outwards is arranged on any one side of the optical film, and the groove matched with the protrusion is arranged on the rubber frame, so that the optical film can be effectively and quickly assembled on the rubber frame, and the optical film assembly is not easy to shift; in addition, any side edge of the optical diaphragm is provided with a sticking part extending outwards, the glue frame is also provided with a sinking groove, and a double-faced adhesive tape for sticking the optical diaphragm and the glue frame is arranged in the sinking groove; when needing to reprocess, the accessible directly changes optical film piece, and the reprocess is simple.

The technical features of the embodiments described above may be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the embodiments described above are not described, but should be considered as being within the scope of the present specification as long as there is no contradiction between the combinations of the technical features.

The above-mentioned embodiments only represent some embodiments of the present invention, and the description thereof is specific and detailed, but not to be construed as limiting the scope of the present invention. It should be noted that, for those skilled in the art, without departing from the spirit of the present invention, several variations and modifications can be made, which are within the scope of the present invention. Therefore, the protection scope of the present invention should be subject to the appended claims.

Claims (10)

1. A fixing structure of an optical film assembly, comprising:

a protrusion extending outward from one side of the optical film;

the groove is arranged on the rubber frame and is matched with the bulge;

a sticking portion extending outward from one side edge of the optical film;

the sinking groove is arranged on the rubber frame, a sinking surface is formed on the rubber frame, and the sinking groove corresponds to the position of the pasting part on the optical diaphragm;

and the double-sided adhesive tape is adhered to the sinking surface and used for adhering the adhering part with the sinking groove.

2. The optical film assembly fixing structure according to claim 1, wherein the number of the grooves is plural, at least one sink is provided between two of the grooves, and a distance between the sink and the groove is 5mm to 15 mm.

3. The optical film assembly fixing structure according to claim 1, wherein the boss is a dovetail, and the groove is a dovetail groove.

4. The optical film assembly fixing structure according to claim 3, wherein the ratio of the width of the bottom side of the dovetail groove to the depth of the groove is 5 to 8: 1, the bevel angle of the dovetail groove is 30-60 degrees.

5. The fixing structure of the optical film assembly as claimed in claim 1, wherein one side of the double-sided adhesive tape is attached to the sinking surface of the sinking groove, and the other side of the double-sided adhesive tape is attached to the bottom of the attaching portion.

6. The optical film assembly fixing structure according to claim 5, wherein the sinking groove is communicated with an inner side of the frame body of the rubber frame, the adhering portion extends into the sinking groove, and an upper surface of the adhering portion is flush with an upper surface of the rubber frame.

7. The optical film assembly fixing structure as claimed in claim 5, wherein the adhesion of the double-sided adhesive tape to the side where the sink groove is attached is greater than the adhesion of the double-sided adhesive tape to the side where the optical film is attached.

8. The fixing structure of the optical film assembly as claimed in claim 7, wherein the ratio of the adhesion of the double-sided adhesive tape to the side where the sink is attached to the optical film assembly to the adhesion of the double-sided adhesive tape to the side where the optical film assembly is attached to the optical film assembly is 4: 3.

9. An optical film assembly comprising a multilayer optical film and the fixing structure according to any one of claims 1 to 8, wherein the multilayer optical film comprises a top optical film and a bottom optical film stacked in this order, the protrusion portion is provided on the top optical film and the bottom optical film, and the adhesion portion is provided on the top optical film.

10. The optical film assembly of claim 9 wherein the uppermost optical film is an upper brightness enhancement film and the bottom optical film comprises a lower brightness enhancement film and a diffuser film, the lower brightness enhancement film being disposed between the upper brightness enhancement film and the diffuser film and the lower brightness enhancement film being disposed between the upper brightness enhancement film and the diffuser film.

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