Display screen optical film fixing structure

Abstract

The utility model relates to a display screen optical film fixing structure which solves the problem that an optical film of an existing display screen is not stable in installation. Comprising a rubber frame, a back frame and a backlight module, the back frame is connected with the bottom of the rubber frame, during installation, a light guide plate is installed in a backlight module installation groove, and light guide plate limiting silica gel is arranged at the corresponding position between the side wall of the backlight module installation groove and the backlight module. The upper surface of the light guide plate limiting silica gel and the upper surface of the corresponding back frame are bonded with transparent double-faced adhesive tape layers, then the convex lugs of the optical film are bonded on the double-faced adhesive tape layers, the rubber frame and the back frame are installed, the light guide plate limiting silica gel can provide buffering for the edge of the light guide plate and prevent the edge of the light guide plate from being damaged, and the light guide plate can be positioned. The deviation of the light guide plate beyond the preset error is prevented, the friction between the light guide plate and the optical films is reduced, in addition, the gluing range of the optical films is enlarged through the light guide plate limiting silica gel, each layer of optical films can be bonded, and the bonding of the optical films is firm and stable.

Description

Technical Field

[0001] The utility model relates to the field of mechanical equipment, in particular to a display screen optical film fixing structure. Background Art

[0002] When installing the optical film of the existing large-size display screen, the optical film ear is fixed on the top of the iron frame with a transparent double-sided tape. However, due to the thickness of the iron frame, the width of the bonding between the optical film and the transparent double-sided tape is only between 0.5 and 0.8 mm. The bonding area is too small, or only the lower optical film is bonded, which cannot meet the requirements of accelerated mechanical testing above 1.0 Hz. In addition, during daily use, the vibration of the display screen will cause the optical films to shift easily, and the friction between the optical film and the light guide plate is prone to friction marks, dense white spots and missing edges. Utility Model Content

[0003] The utility model aims to solve the problem that the optical film of the existing display screen is not firmly installed.

[0004] The technical solution adopted to solve the technical problem proposed by the utility model is as follows: the optical film fixing structure of the display screen of the utility model includes a glue frame, a back frame and a backlight module, the back frame is connected to the bottom of the glue frame, the backlight module includes a backlight plate and more than one layer of optical film, the optical film is located on the backlight plate, the back frame is provided with a backlight module mounting groove, the backlight module is located in the backlight module mounting groove, the glue frame is provided with a glue frame positioning edge for positioning the upper edge of the top optical film, a light guide plate limiting silicone is provided between the side of the backlight module and the side wall of the backlight module mounting groove, the upper surface of the light guide plate limiting silicone is flush with the corresponding upper surface of the back frame, the upper surface of the back frame and the upper surface of the light guide plate limiting silicone are provided with a double-sided adhesive layer, and the side surface of each layer of optical film is provided with a lug bonded to the double-sided adhesive layer protruding outward.

[0005] The technical solutions further defining the utility model include:

[0006] More than two layers of optical films are stacked and arranged, and the back frame is provided with a back frame bonding platform matched with each lug.

[0007] The light guide plate limiting silica gel, the back frame bonding platform and the double-sided adhesive layer are all stepped, and the lugs of each optical film are bonded to the corresponding stepped double-sided adhesive layer.

[0008] The bottom edge of the rubber frame is provided with a downward frame, and the outer wall of the back frame is fixedly connected to the frame.

[0009] A buckle is arranged on the outer wall of the back frame, a slot is arranged on the frame, and the back frame and the frame are connected by the buckle.

[0010] The compression ratio of the light guide plate limiting silicone is 10%-30%.

[0011] The viscosity of the double-sided adhesive layer is 8-30 N / inch.

[0012] The double-sided adhesive layer is a transparent double-sided adhesive layer.

[0013] Through the above technical scheme, the beneficial effects of the utility model are as follows: when installing the optical film of the display screen optical film fixing structure of the utility model, the light guide plate is installed in the backlight module mounting groove, the light guide plate limiting silicone is placed at the corresponding position between the side wall of the backlight module mounting groove and the backlight module, and then a transparent double-sided adhesive layer is bonded to the upper surface of the light guide plate limiting silicone and the corresponding upper surface of the back frame, and then the lugs of the optical film are bonded to the double-sided adhesive layer, and then the adhesive frame and the back frame are installed, the light guide plate limiting silicone can provide a buffer for the edge of the light guide plate to prevent damage to the edge of the light guide plate, and can also position the light guide plate to prevent the light guide plate from deviating beyond a predetermined error, thereby reducing the friction between the light guide plate and the optical film, and in addition, the light guide plate limiting silicone increases the bonding range of the optical film, and each layer of the optical film can be bonded, so that the optical film is firmly and stably bonded. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model is a three-dimensional structural schematic diagram of a display screen optical film fixing structure.

[0015] Figure 2 The utility model is a schematic diagram of the cutaway structure of a display screen optical film fixing structure.

[0016] Figure 3 The utility model is a schematic structural diagram of the stepped bonding of the lugs of the optical film of the display screen optical film fixing structure. DETAILED DESCRIPTION

[0017] The structure of the utility model is further described below in conjunction with the accompanying drawings.

[0018] Reference Figures 1 to 3The optical film fixing structure of the display screen of the utility model includes a glue frame 1, a back frame 2 and a backlight module 3, the back frame is connected to the bottom of the glue frame, the backlight module 3 includes a backlight plate 31 and more than one layer of optical film 32, the optical film is located on the backlight plate, a backlight module mounting groove 21 is provided in the back frame 2, the backlight module is located in the backlight module mounting groove, a glue frame positioning edge 11 for positioning the upper edge of the top optical film is provided on the glue frame 1, a light guide plate limiting silicone 4 is provided between the side of the backlight module and the side wall of the backlight module mounting groove, the upper surface of the light guide plate limiting silicone is flush with the corresponding upper surface of the back frame, the upper surface of the back frame and the upper surface of the light guide plate limiting silicone are provided with a double-sided adhesive layer 5, and the side of the optical film 32 is provided with a lug 321 bonded to the double-sided adhesive layer protruding outward. During installation, install the light guide plate in the backlight module installation groove, place the light guide plate limiting silicone at the corresponding position between the side wall of the backlight module installation groove and the backlight module, and then adhere a transparent double-sided adhesive layer to the upper surface of the light guide plate limiting silicone and the corresponding upper surface of the back frame, and then adhere the lugs of the optical film to the double-sided adhesive layer, and then install the adhesive frame and the back frame. The light guide plate limiting silicone can provide a buffer for the edge of the light guide plate to prevent damage to the edge of the light guide plate, and can also position the light guide plate to prevent the light guide plate from deviating beyond the predetermined error and reduce the friction between the light guide plate and the optical film. In addition, the light guide plate limiting silicone increases the bonding range of the optical film, and each layer of the optical film can be bonded, so that the optical film is firmly and stably bonded.

[0019] In this embodiment, four layers of optical films 32 are stacked and arranged, and a lug is provided at the edge of each layer of optical films, and a back frame bonding platform 22 that cooperates with each lug is provided on the back frame 2. In specific implementation, more than two layers of optical films can be stacked and arranged. In this embodiment, two light guide plate limiting silicones are respectively set on both sides of the backlight module. In specific implementation, at least one light guide plate limiting silicone can be respectively set on both sides of the backlight module according to the size of the display screen, and at least one light guide plate limiting silicone can be respectively set on the four sides of the backlight module as needed. The light guide plate limiting silicone, the back frame bonding platform and the double-sided adhesive layer can be set to be stepped, and the lugs of each optical film are bonded to the corresponding stepped double-sided adhesive layer. Therefore, each optical film is bonded to the corresponding double-sided adhesive layer, so that each layer of the film is firmly bonded. At the same time, the stepped bonding structure can make the structure compact, simple to manufacture, and easy to install.

[0020] In this embodiment, the compression ratio of the light guide plate limiting silicone is 10%-30%. This compression ratio of the light guide plate limiting silicone can make the light guide plate limiting silicone have a certain elasticity and limit the deformation size of the light guide plate limiting silicone, so that the backlight module moves within a certain error range without affecting the use effect of the display screen.

[0021] In this embodiment, the viscosity of the double-sided adhesive layer is 8-30 N / inch. The double-sided adhesive layer with such viscosity can be well bonded with the light guide plate limiting silica gel and the optical film, so that the bonding is firm and stable.

[0022] In this embodiment, a downward frame 12 is provided at the bottom edge of the plastic frame 1, and the outer wall of the back frame 2 is fixedly connected to the frame. A buckle 23 is provided on the outer wall of the back frame 2, and a slot 13 is provided on the frame 12. The back frame and the frame are connected by the buckle. Thus, the back frame and the plastic frame are conveniently and quickly installed.

[0023] In this embodiment, the double-sided adhesive layer is a transparent double-sided adhesive layer, which will not block the light of the backlight module and will not affect the brightness of the display screen.

[0024] Although the specific implementation of the utility model is described in detail in conjunction with the drawings, it should not be understood as limiting the protection scope of the utility model. Within the scope described in the claims, various modifications and variations that can be made by those skilled in the art without creative work still belong to the protection scope of the utility model.

Claims

1. A display screen optical film fixing structure, comprising a plastic frame, a back frame and a backlight module, wherein the back frame is connected to the bottom of the plastic frame, the backlight module comprises a backlight board and one or more layers of optical films, the optical films are located on the backlight board, a backlight module mounting groove is provided in the back frame, the backlight module is located in the backlight module mounting groove, and a plastic frame positioning edge is provided on the plastic frame for positioning the upper edge of the top optical film, characterized in that: A light guide plate limiting silicone is provided between the side of the backlight module and the side wall of the backlight module mounting groove. The upper surface of the light guide plate limiting silicone is flush with the upper surface of the corresponding back frame. The upper surface of the back frame and the upper surface of the light guide plate limiting silicone are provided with a double-sided adhesive layer. The side of each layer of optical film is protruding outwardly with a lug bonded to the double-sided adhesive layer.

2. A display screen optical film fixing structure as claimed in claim 1, characterized in that: More than two layers of optical films are stacked and arranged, and the back frame is provided with a back frame bonding platform matched with each lug.

3. A display screen optical film fixing structure as claimed in claim 2, characterized in that: The light guide plate limiting silica gel, the back frame bonding platform and the double-sided adhesive layer are all stepped, and the lugs of each optical film are bonded to the corresponding stepped double-sided adhesive layer.

4. The display screen optical film fixing structure according to claim 1, characterized in that: The bottom edge of the rubber frame is provided with a downward frame, and the outer wall of the back frame is fixedly connected to the frame.

5. A display screen optical film fixing structure as claimed in claim 4, characterized in that: A buckle is arranged on the outer wall of the back frame, a slot is arranged on the frame, and the back frame and the frame are connected by the buckle.

6. The display screen optical film fixing structure according to claim 1, characterized in that: The compression ratio of the light guide plate limiting silicone is 10%-30%.

7. The display screen optical film fixing structure according to claim 1, characterized in that: The viscosity of the double-sided adhesive layer is 8-30 N / inch.

8. The display screen optical film fixing structure according to claim 1, characterized in that: The double-sided adhesive layer is a transparent double-sided adhesive layer.

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