Optical film fixing structure easy to assemble

Abstract

The utility model discloses an optical film fixing structure easy to assemble. The optical film fixing structure comprises a fixing bottom shell, a pressing frame, an LED lamp strip, a reflector plate, a light guide plate, an optical film assembly and a liquid crystal panel. The optical film assembly is formed by stacking a plurality of optical films, positioning protruding blocks are arranged at the two ends of each optical film respectively, positioning grooves connected with the positioning protruding blocks in a matched and clamped mode are formed in the fixing bottom shell, a plurality of positioning clamping holes are formed in the fixing bottom shell at intervals in the circumferential direction, and positioning locking blocks connected with the positioning clamping holes through buckles are arranged on the pressing frame. According to the utility model, the optical film assembly is positioned and clamped with the positioning groove on the fixed bottom shell through the positioning convex block, and the positioning locking block on the pressing frame can be buckled and connected with the positioning clamping hole on the fixed bottom shell, so that the assembly structure stability of the optical film is improved; the guide inclined surface arranged on the positioning locking block can guide the positioning locking block to smoothly slide into the positioning clamping hole, so that locking is completed, and the assembling efficiency of the optical film is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to the field of optical film, especially easy to assemble optical film fixed structure. BACKGROUND

[0002] Optical film is a thin film material applied in liquid crystal display, optical instrument and display equipment to optimize the light of backlight, make light evenly distribute, improve brightness, contrast and color performance, with the continuous development of liquid crystal display technology, the performance requirement of optical film is higher and higher, in the backlight field of liquid crystal display, the assembly precision of optical film will affect the image quality of display equipment.

[0003] In prior art, the backlight of liquid crystal display screen is usually LED light source, and the LED light source guides light to liquid crystal panel through light guide plate, however, since the light of backlight needs to be adjusted by multiple layers of optical film before being evenly distributed on liquid crystal panel, in the installation process of optical film, the display effect of liquid crystal display screen is often affected due to assembly misplacement, looseness or deformation, and the assembly process of traditional optical film is relatively complicated and not easy to assemble, thereby affecting the production efficiency and manufacturing cost of product.

[0004] Therefore, the prior art has defects and needs to be improved. UTILITY MODEL CONTENTS

[0005] The utility model wants to solve the technical problem of providing easy to assemble optical film fixed structure with stable assembly structure and improved production efficiency.

[0006] In order to achieve the purpose, the utility model adopts the following technical scheme: an easy to assemble optical film fixed structure, comprising a fixed bottom shell, a compression frame, an LED light bar, a reflecting sheet, a light guide plate, an optical film assembly and a liquid crystal panel.

[0007] The fixed bottom shell has a receiving chamber inside, the liquid crystal panel, the optical film assembly, the light guide plate and the reflecting sheet are sequentially stacked inside the receiving chamber from outside to inside, two LED light bars are respectively attached to two symmetrical side walls of the fixed bottom shell, and a plurality of spaced LED light sources are arranged on the LED light bar.

[0008] The reflecting sheet is used for reflecting the light emitted by the LED light source to the light guide plate, and the light guide plate is used for refracting the light emitted by the LED light source into the optical film assembly.

[0009] The optical film assembly is stacked by a plurality of optical films, and the two ends of the plurality of optical films are respectively provided with positioning protrusions, and the fixed bottom shell is provided with positioning grooves matched with the positioning protrusions.

[0010] The fixed bottom shell is provided with a plurality of positioning clamping holes at intervals in the circumferential direction, and the compression frame is provided with positioning lock blocks clamped with the positioning clamping holes.

[0011] The positioning lock blocks are located on the inner side wall of the compression frame, and the bottom of each positioning lock block is provided with a guide inclined surface for guiding the positioning lock block to slide into the positioning clamping hole for locking.

[0012] By the above technical scheme, the optical film assembly includes four optical films, and the four optical films are prism film, polarizing film, diffusion film and brightness enhancement film from outside to inside.

[0013] By the above technical scheme, the positioning lock block is provided with a hollow groove at the upper end.

[0014] By the above technical scheme, the optical film assembly includes four optical films, and the four optical films are prism film, polarizing film, diffusion film and brightness enhancement film from outside to inside.

[0015] By the above technical scheme, the positioning groove is provided with a rubber supporting block for supporting the positioning convex block.

[0016] By the above technical scheme, the four corners of the fixed bottom shell are respectively provided with corner type baffles made of flexible material, and the corner type baffles are used for flexible abutment with the optical film assembly.

[0017] By the above technical scheme, the LED light bar is bonded to the side wall of the fixed bottom shell.

[0018] By the above technical scheme, the compression frame is provided with an edge protection structure for covering the edge of the liquid crystal panel.

[0019] Compared with the prior art, the utility model has the following beneficial effects:

[0020] The utility model discloses a fixed bottom shell inside setting the accommodation chamber can be with liquid crystal panel, optical film assembly, light guide plate and reflector according to order laminated placement, avoid optical film assembly and dislocation or loose, LED lamp bar is installed on the two symmetrical side wall of fixed bottom shell, and light is guided into optical film assembly through light guide plate, and reflector can improve the utilization efficiency of light, and enhance display effect, and optical film assembly is positioned and clamped through the positioning lug and the positioning slot on fixed bottom shell, and the positioning lock block on the compression frame can be buckled with the positioning card hole on fixed bottom shell, thereby improving the assembly structure stability of optical film piece, the guide slope set up on positioning lock block can improve the assembly convenience of compression frame. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or prior art, below will be to the embodiment or prior art description needed to use the drawing briefly introduced, obviously, below description in the drawing only some embodiments of the utility model, for ordinary skilled person in the art, under the premise of not paying the creative labor, still can obtain other drawings according to these drawings.

[0022] The structure, proportion, size etc. shown in the drawings of the specification are only used to cooperate with the content disclosed in the specification, to enable persons skilled in the art to understand and read, and are not used to limit the implementation conditions of the utility model, so they do not have technical substantive significance, any modification of structure, change of proportion relationship or adjustment of size, without affecting the effect and purpose that the utility model can produce, should still fall within the scope of the technical content disclosed by the utility model.

[0023] Figure 1 It is the explosion structure schematic diagram of the utility model;

[0024] Figure 2 It is the locking bolt mounting structure schematic diagram of the utility model;

[0025] Figure 3 It is the compression frame structure schematic diagram of the utility model;

[0026] Figure 4 It is the fixed bottom shell structure schematic diagram of the utility model. DETAILED DESCRIPTION

[0027] To make the utility model's objectives, features, and advantages more apparent and understandable, the technical solutions in the embodiments of the present utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described below are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present utility model.

[0028] In the description of this utility model, it should be understood that the terms "upper," "lower," "top," "bottom," "inner," and "outer," etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. It should be noted that when a component is considered to be "connected" to another component, it can be directly connected to the other component or there may be a component centrally located at the same time.

[0029] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0030] like Figures 1 to 4 As shown, this utility model embodiment provides an easily assembled optical film fixing structure, including a fixing base 1, a clamping frame 2, LED light strips 3, a reflective sheet 4, a light guide plate 5, an optical film assembly 6, and a liquid crystal panel 7. The fixing base 1 has a receiving chamber 10. The liquid crystal panel 7, the optical film assembly 6, the light guide plate 5, and the reflective sheet 4 are stacked sequentially from the outside to the inside in the receiving chamber 10. Two LED light strips 3 are respectively attached to two symmetrical side walls of the fixing base 1. The LED light strips 3 are provided with multiple spaced LED light sources 31. The reflective sheet 4 is used to reflect the light emitted by the LED light sources 31 to the light guide plate 5. The light guide plate 5 is used to reflect the light emitted by the LED light sources 31 to the light guide plate 5. The light emitted by the LED strip 3 is refracted into the optical film assembly 6. The receiving chamber 10 inside the fixed base 1 provides a stable space to stack and fix the liquid crystal panel 7, the optical film assembly 6, the light guide plate 5, and the reflective sheet 4 in a specific order, so that the components can be tightly fitted together. The light guide plate 5 serves as a guiding channel for the light source, which can guide the light from the LED strip 3 into the optical film assembly 6. The reflective sheet 4 can reflect the light emitted by the LED light source 31 to the light guide plate 5, thereby increasing the light utilization efficiency, avoiding light waste, and improving the display effect of the liquid crystal panel 7. The LED strip 3 is installed on the two symmetrical side walls of the fixed base 1, and the light is uniformly illuminated by the spaced LED light sources 31.

[0031] The optical film assembly 6 is stacked by a plurality of optical film pieces 61, both ends of the plurality of optical film pieces 61 are respectively provided with positioning protrusions 611, the fixed bottom shell 1 is provided with positioning grooves 11 matched with the positioning protrusions 611, the fixed bottom shell 1 is provided with a plurality of positioning clamping holes 12 at intervals in the circumferential direction, the pressing frame 2 is provided with positioning lock blocks 21 connected with the positioning clamping holes 12 through buckling, the positioning lock blocks 21 are located on the inner side wall of the pressing frame 2, and the bottom of the positioning lock blocks 21 is provided with a guide inclined surface 210, which is used to guide the positioning lock blocks 21 to slide into the positioning clamping holes 12 for locking. The optical film assembly 6 is stacked by a plurality of optical film pieces 61, both ends of each optical film piece 61 are provided with positioning protrusions 611, the positioning protrusions 611 can be clamped with the positioning grooves 11 on the fixed bottom shell 1 during assembly to prevent the optical film piece 61 from being misaligned or loose. The fixed bottom shell 1 is provided with a plurality of positioning clamping holes 12 at intervals in the circumferential direction, so that the pressing frame 2 can be buckled and connected with the positioning clamping holes 12 through the positioning lock blocks 21. The setting of the guide inclined surface 210 can guide the positioning lock blocks 21 to smoothly slide into the positioning clamping holes 12 during assembly of the pressing frame 2, thereby completing locking and improving the assembly stability of the optical film piece 61.

[0032] Further, the optical film assembly 6 includes four optical film pieces 61, and the four optical film pieces 61 are in turn a prism film piece, a polarized film piece, a diffusion film piece and a brightening film piece from outside to inside. The brightening film piece can focus the light transmitted from the light guide plate 5, thereby enhancing the display brightness and improving the display effect; the diffusion film piece can uniformly diffuse the light, so that the light is uniformly distributed on the display panel, thereby improving the overall optical quality of the display screen; the polarized film piece can adjust the polarization state of the light, cooperate with the regulation of the liquid crystal panel 7, so that the light can be adjusted according to the arrangement state of the liquid crystal molecules, thereby realizing clear and accurate image display; and the prism film piece can guide the light through the micro-prism structure, thereby improving the light distribution in the viewing angle range and optimizing the display effect.

[0033] As shown in Figure 3 Further, the upper end of the positioning lock block 21 is provided with a hollow groove 22, so that the positioning lock block 21 can be bent or deformed to a certain extent during installation, thereby being more easily buckled and locked with the positioning clamping hole 12 on the fixed bottom shell 1.

[0034] As shown in Figure 2 Further, it further includes a locking bolt 8, the side wall of the pressing frame 2 is provided with a through hole 20, the locking bolt 8 passes through the through hole 20 and is connected with the side wall of the fixed bottom shell 1 through threads, so that the assembly stability of the pressing frame 2 can be enhanced.

[0035] As shown in Figure 4As shown, furthermore, a rubber support block 13 is provided on the positioning groove 11, which is used to support the positioning protrusion 611. The rubber support block 13 can provide soft and stable support for the positioning protrusion 611, ensuring that the positioning protrusion 611 is stably locked in the positioning groove 11, and preventing the optical film 61 from undergoing structural displacement or loosening due to vibration.

[0036] like Figure 4 As shown, further, corner baffles 14 are provided at the four corners of the fixed base shell 1. The corner baffles 14 are made of flexible material and are used to flexibly abut against the optical film assembly 6, so that the optical film 61 comes into contact with the hard material and causes pressure scratches, thus avoiding damage to the optical film 61.

[0037] like Figure 4 As shown, the LED light strip 3 is further bonded to the side wall of the fixed base shell 1, thereby simplifying the assembly steps and improving the assembly efficiency of the LED light strip 3.

[0038] like Figure 1 As shown, the clamping frame 2 further includes a protective edge structure 23 at its top, which covers the edge of the liquid crystal panel 7. The protective edge structure 23, covering the edge of the liquid crystal panel 7, not only prevents damage such as bumps and scratches, but also applies appropriate pressure to the liquid crystal panel 7, thereby improving the overall stability of the assembly structure.

[0039] The above-described embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this utility model.

Claims

1. An easily assembled optical diaphragm fixing structure, characterized in that, It includes a fixed base, a clamping frame, LED light strips, reflectors, light guide plates, optical film assemblies, and an LCD panel; The fixed base shell has a receiving chamber. The liquid crystal panel, optical film assembly, light guide plate and reflective sheet are stacked in the receiving chamber from the outside to the inside. Two LED light strips are respectively attached to the two symmetrical side walls of the fixed base shell. The LED light strips are provided with multiple spaced LED light sources. The reflector is used to reflect the light emitted by the LED light source to the light guide plate, and the light guide plate is used to refract the light emitted by the LED light source into the optical film assembly; The optical film assembly is composed of multiple optical films stacked together. Each of the multiple optical films has a positioning protrusion at both ends. The fixed bottom shell has a positioning groove that is adapted to and engages with the positioning protrusion. The fixed base shell is provided with a plurality of positioning holes spaced apart along the circumference, and the clamping frame is provided with a positioning lock block that is connected to the positioning holes by a snap fastener. The positioning lock block is located on the inner side wall of the clamping frame, and the bottom of the positioning lock block is provided with a guide slope. The guide slope is used to guide the positioning lock block to slide into the positioning hole for locking.

2. The easily assembled optical film fixing structure according to claim 1, characterized in that, The optical film assembly includes four optical films, which are arranged from the outside to the inside as a prism film, a polarizing film, a diffusion film, and a brightness enhancement film.

3. The easily assembled optical film fixing structure according to claim 1, characterized in that, The upper end of the positioning lock block is provided with a hollow groove.

4. The easily assembled optical film fixing structure according to claim 1, characterized in that, It also includes a locking bolt, and the side wall of the clamping frame is provided with a through hole. The locking bolt passes through the through hole and is connected to the side wall of the fixed base shell by a thread.

5. The easily assembled optical film fixing structure according to claim 1, characterized in that, The positioning groove is provided with a rubber support block, which is used to support the positioning protrusion.

6. The easily assembled optical film fixing structure according to claim 1, characterized in that, The fixed base shell is provided with corner baffles at its four corners. The corner baffles are made of flexible material and are used to flexibly abut against the optical film assembly.

7. The easily assembled optical film fixing structure according to claim 1, characterized in that, The LED light strip is adhered to the side wall of the fixed base.

8. The easily assembled optical film fixing structure according to claim 1, characterized in that, The top of the clamping frame is provided with a protective edge structure, which is used to cover the edge of the liquid crystal panel.

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