Light guide structure, backlight source and liquid crystal module

Abstract

The utility model discloses a light guide structure, backlight source and liquid crystal module relates to display module field, light guide structure includes light guide plate and a plurality of pieces of optical membrane material, the one side of light guide plate is provided with a plurality of protruding lug, the protruding lug is provided with the bonding glue layer, each piece of optical membrane material is provided with mutually staggered protruding piece, the protruding piece is provided with the bonding glue layer, the bonding glue layer is provided with the bonding glue layer, and the bonding glue layer is provided with the bonding glue layer. The protruding pieces and the protruding lugs are arranged correspondingly. The backlight source comprises a light guide structure, a light source, a rubber frame and an iron frame, a reflector plate, a light guide plate and an optical film material are sequentially arranged in the rubber frame from bottom to top, a plurality of limiting protrusions are arranged on one side wall of the rubber frame, and limiting grooves and mounting grooves which are distributed in a staggered mode are formed between the adjacent limiting protrusions; the stability of the optical film material on the light guide plate is guaranteed, display chromatic aberration is avoided, the limiting protrusions are arranged on the rubber frame, the limiting grooves and the installation grooves are formed through the limiting protrusions, the light guide plate can be limited and fixed, interference caused by light generated between light sources is avoided, and the display effect is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of display modules, in particular to a light guide structure, a backlight source and a liquid crystal module. Background Art

[0002] The existing LCM liquid crystal module backlight structure is prone to causing the film material to move during terminal use or transportation due to the shaking of the module, which affects the display effect. The subsequent repair and disassembly of the whole machine will also cause a large amount of material scrapping and labor waste. Patent application number 202322154820.3 discloses a backlight source with an internal film material fixing structure, including a rubber frame, an optical film material group, a light guide plate, and a light source assembly. The rubber frame includes side panels forming a rectangle, and the inner wall of the side panel is provided with an inner frame panel perpendicular to the inner wall. The inner frame panel and the side panel form a mounting position, and the optical film material group and the light guide plate are installed in the mounting position. The light guide plate is arranged behind the optical film material group, and the edges of the optical film material group and the light guide plate are aligned. The optical film material group is formed by stacking more than two optical films, and the optical film and the light guide plate are provided with a film material fixing structure; the film material fixing structure is that a double-sided adhesive is provided on one side of the light guide plate, and staggered bonding and fixing positions are provided between the optical films, and a bonding and fixing position is provided on the same side of each optical film, and the remaining positions are provided with avoidance positions; the avoidance positions are evenly arranged avoidance gaps, and the positions of the light guide plate corresponding to the avoidance gaps are correspondingly provided with boss positions of different heights, and the boss positions of different heights are evenly arranged on one side of the light guide plate, and the arrangement order of the boss positions of different heights is that the same number of first-height boss positions are provided on the left and right ends on one side of the light guide plate, and adjacent first-height boss positions are arranged along the middle of the light guide plate facing each other. The same number of second height boss positions are arranged at the same position, and the same number of third height boss positions are arranged at the middle positions of the adjacent second height boss positions facing each other along the light guide plate... until at least two Nth height boss positions remain in the middle of this side of the light guide plate, the height of the Nth height boss position > ... > the height of the third height boss position > the height of the second height boss position > the height of the first height boss position, and each boss position is affixed with double-sided tape; in this technical solution, double-sided tape is used to bond and fix the optical film material to the light guide plate, and boss positions of different heights are arranged on the light guide plate and avoidance positions are arranged on the film material, so as to ensure that each layer of the optical film material can be bonded and fixed to the light guide plate, thereby fixing the optical film material and preventing the optical film material from falling off or shifting. However, in this structure, the boss position is set on the surface of the light guide plate. When each layer of optical film material is bonded to the boss position by double-sided adhesive, the gaps that need to be set are staggered, which results in the boss position of the light guide plate not covering the complete optical film material, thereby causing color difference in display and affecting the display effect. To this end, the present application proposes a light guide structure, a backlight source and a liquid crystal module to solve the above problems. Utility Model Content

[0003] Based on this, it is necessary to provide a light guide structure, a backlight source and a liquid crystal module to address the above technical problems. A protruding ear is arranged on the light guide plate, and the adhesive layer on the protruding ear is used to bond and fix the optical film material to each piece of optical film material, so as to fix the optical film material, ensure the stability of the optical film material on the light guide plate, and avoid displacement of the optical film material. At the same time, the protruding ear is independently arranged on one side of the light guide plate, located outside the display area, and does not participate in the picture display, thereby ensuring that the optical film material on the light guide plate in the display area is completely covered, avoiding display color difference and improving the display effect. A limiting protrusion is arranged on the glue frame, and a limiting groove and an installation groove are formed by the limiting protrusion. After the protruding ear on the light guide plate is placed in the limiting groove, the light guide plate can be limited and fixed, and the optical film material on the light guide plate can be further limited. At the same time, the light source is arranged in the installation groove and installed independently to avoid interference caused by light generated between the light sources, thereby further improving the display effect.

[0004] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0005] A light guide structure comprises a light guide plate and multiple optical film materials, wherein the optical film materials are stacked on the surface of the light guide plate, a plurality of protruding ears are arranged on one side of the light guide plate, an adhesive layer is arranged on the protruding ears, and each piece of the optical film material is provided with mutually staggered protruding pieces, and the protruding pieces are arranged corresponding to the protruding ears.

[0006] As a preferred implementation of the light-guiding structure provided by the utility model, the optical film material is three pieces, which are respectively a diffusion film, a lower brightness enhancement film and an upper brightness enhancement film from bottom to top.

[0007] As a preferred embodiment of the machine-foldable and aligned display module provided by the utility model, the surface of the protruding ear is polished and roughened to form a rough surface, and the adhesive layer is bonded to the rough surface.

[0008] As a preferred embodiment of the machine-foldable display module provided by the utility model, the protruding ears are set to different thicknesses, and the thickness of the protruding ears corresponding to the protruding pieces on the lower optical film material is smaller than the protruding ears corresponding to the protruding pieces on the upper optical film material.

[0009] As a preferred embodiment of the display module capable of being folded and aligned by a machine provided by the utility model, the difference in thickness between the protruding ears corresponding to the protruding pieces on the adjacent optical films is the thickness of the optical film.

[0010] As a preferred embodiment of the display module capable of being mechanically folded and aligned provided by the utility model, the light guide plate is provided with an arc-shaped light guide groove between two adjacent protruding ears.

[0011] The utility model also provides a backlight source, which includes the above-mentioned light guide structure, light source, rubber frame and iron frame, the rubber frame is arranged in the iron frame and is integrally injection molded with the iron frame, the interior of the rubber frame is sequentially provided with a reflective sheet, a light guide plate and an optical film material from bottom to top, a side wall of the rubber frame is provided with a plurality of limiting protrusions, and staggered limiting grooves and mounting grooves are formed between adjacent limiting protrusions, the protruding ears are located in the limiting grooves, and the light source is arranged in the mounting grooves.

[0012] As a preferred implementation of the backlight source provided by the utility model, a plurality of heat dissipation holes are arranged on the side wall of the rubber frame corresponding to the mounting groove.

[0013] As a preferred embodiment of the display module that can be mechanically folded and aligned provided by the utility model, a heat dissipation adhesive layer is provided on one side of the heat dissipation hole of the iron frame.

[0014] The utility model also provides a liquid crystal module, which comprises the above-mentioned backlight source.

[0015] Compared with the prior art, the utility model has the following beneficial effects:

[0016] 1. The light guide structure provided by the utility model is achieved by arranging protruding ears on the light guide plate, and using the adhesive layer on the protruding ears to bond and fix each piece of optical film material, thereby fixing the optical film material, ensuring the stability of the optical film material on the light guide plate, and avoiding the displacement of the optical film material. At the same time, the protruding ears are independently arranged on one side of the light guide plate, located outside the display area, and do not participate in the picture display, thereby ensuring that the optical film material on the light guide plate in the display area is fully covered, avoiding display color difference, and improving the display effect.

[0017] 2. The backlight source provided by the utility model is provided with a limiting protrusion on the rubber frame, and a limiting groove and a mounting groove are formed by using the limiting protrusion. After the protruding ear on the light guide plate is placed in the limiting groove, the light guide plate can be limited and fixed, and the optical film material on the light guide plate can be further limited. At the same time, the light source is arranged in the mounting groove and installed independently to avoid interference caused by light generated between the light sources, thereby further improving the display effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] In order to more clearly illustrate the scheme in the utility model, a brief introduction is given below to the drawings required for use in the description of the embodiments. Obviously, the drawings described below are some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0019] Figure 1 A three-dimensional schematic diagram of the overall structure of the light guide structure provided by the utility model;

[0020] Figure 2 A schematic diagram of the overall structure of the light guide structure provided by the utility model;

[0021] Figure 3 A schematic diagram of another light guide plate structure of the light guide structure provided by the utility model;

[0022] Figure 4 A three-dimensional schematic diagram of the overall structure of the backlight source provided by the utility model;

[0023] Figure 5 This is a schematic diagram of the overall structure of the backlight provided by the utility model;

[0024] Figure 6 This is a three-dimensional schematic diagram of the rubber frame structure of the backlight source provided by the utility model.

[0025] The markings in the figure are as follows:

[0026] 1. Light guide plate; 2. Optical film material; 21. Diffusion film; 22. Lower brightness enhancement film; 23. Upper brightness enhancement film; 3. Protruding ears; 4. Adhesive layer; 5. Protruding sheet; 6. Light source; 7. Glue frame; 8. Iron frame; 9. Reflector; 10. Limiting protrusion; 11. Limiting groove; 12. Mounting groove; 13. Arc-shaped light guide groove; 14. Heat dissipation hole; 15. Heat dissipation glue layer. DETAILED DESCRIPTION

[0027] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0028] As described in the background technology, the bosses of the existing light guide plate are set on the surface of the light guide plate. When each layer of optical film material is bonded to the bosses by double-sided adhesive, the gaps that need to be set require the bosses to be staggered, which results in the bosses of the light guide plate not covering the entire optical film material, thereby causing color difference in display and affecting the display effect.

[0029] In order to solve this technical problem, the utility model provides a light guide structure, a backlight source and a liquid crystal module, which are applied to the field of display modules.

[0030] Specifically, please refer to Figure 1-2The light guide structure specifically includes a light guide plate 1 and multiple optical film materials 2. The optical film materials 2 are stacked on the surface of the light guide plate 1. Multiple protruding ears 3 are arranged on one side of the light guide plate 1. An adhesive layer 4 is arranged on the protruding ears 3. Each piece of the optical film material 2 is provided with protruding pieces 5 that are staggered from each other, and the protruding pieces 5 are arranged corresponding to the protruding ears 3.

[0031] The backlight source specifically includes the above-mentioned light guide structure, light source 6, rubber frame 7 and iron frame 8. The rubber frame 7 is arranged in the iron frame 8 and is integrally injection molded with the iron frame 8. The interior of the rubber frame 7 is provided with a reflective sheet 9, a light guide plate 1 and an optical film material 2 from bottom to top. A side wall of the rubber frame 7 is provided with a plurality of limiting protrusions 10, and staggered limiting grooves 11 and mounting grooves 12 are formed between adjacent limiting protrusions 10. The protruding ear 3 is located in the limiting groove 11, and the light source 6 is arranged in the mounting groove 12.

[0032] The liquid crystal module includes the above-mentioned backlight source.

[0033] The light guide structure, backlight source and liquid crystal module provided by the utility model are provided with a protruding ear 3 on the light guide plate 1, and the adhesive layer 4 on the protruding ear 3 is used to bond and fix each piece of optical film material 2, so as to achieve the fixation of the optical film material 2, ensure the stability of the optical film material 2 on the light guide plate 1, and avoid the displacement of the optical film material 2. At the same time, the protruding ear 3 is independently arranged on one side of the light guide plate 1, located outside the display area, and does not participate in the picture display, so as to ensure that the optical film material 2 on the light guide plate 1 in the display area is completely covered, and the display color difference is avoided, and the display effect is improved. A limiting protrusion 10 is provided on the glue frame 7, and a limiting groove 11 and an installation groove 12 are formed by the limiting protrusion 10. After the protruding ear 3 on the light guide plate 1 is placed in the limiting groove 11, the light guide plate 1 can be limited and fixed, and the optical film material 2 on the light guide plate 1 can be further limited. At the same time, the light source 6 is arranged in the installation groove 12 and is independently installed, so as to avoid the interference caused by the light generated between the light sources 6, and further improve the display effect.

[0034] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the accompanying drawings.

[0035] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features and technical solutions in the embodiments may be combined with each other.

[0036] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0037] Please refer to Figure 1-5, a light guide structure is provided, which includes a light guide plate 1 and multiple optical film materials 2. In this example, the optical film materials 2 are provided in three pieces, which are a diffusion film 21, a lower light enhancement film 22 and an upper light enhancement film 23 from bottom to top. The three optical film materials 2 are stacked on the surface of the light guide plate 1. A plurality of protruding ears 3 are provided on one side of the light guide plate 1. In this example, the protruding ears 3 are provided in six pieces. The protruding ears 3 are provided on the light incident side of the light guide plate 1. An adhesive layer 4 is provided on the protruding ears 3. The adhesive layer 4 is a double-sided adhesive. Each piece of the optical film material 2 is provided with mutually staggered protruding pieces 5. There are two protruding pieces 5 on each piece of the optical film material 2 and they are symmetrically arranged. The protruding pieces 5 are arranged corresponding to the protruding ears 3. The protruding pieces 5 are bonded and fixed to the protruding ears 3 through the adhesive layer 4. The protruding pieces 5 on each piece of the optical film material 2 are staggered, ensuring that each piece of the optical film material 2 can be bonded and fixed to the protruding ears 3 on the light guide plate 1, thereby achieving the fixation of each piece of the optical film material 2.

[0038] The surface of the protruding ear 3 is ground and roughened to form a rough surface, and the adhesive layer 4 is bonded to the rough surface of the protruding ear 3, thereby improving the adhesion of the adhesive layer 4.

[0039] The protruding ears 3 are set to have different thicknesses, and the thickness of the protruding ears 3 corresponding to the protruding sheets 5 on the lower optical film material 2 is smaller than the protruding ears 3 corresponding to the protruding sheets 5 on the upper optical film material 2, that is, the thickness of the protruding ears 3 corresponding to the protruding sheets 5 on the diffusion film 21 is smaller than the thickness of the protruding ears 3 corresponding to the protruding sheets 5 on the lower light-enhancing film 22, the thickness of the protruding ears 3 corresponding to the protruding sheets 5 on the lower light-enhancing film 22 is smaller than the thickness of the protruding ears 3 corresponding to the protruding sheets 5 on the upper light-enhancing film 23, and the thickness of the protruding ears 3 corresponding to the protruding sheets 5 on the diffusion film 21 is smaller than the thickness of the light guide plate 1, and the thickness difference between the protruding ears 3 corresponding to the protruding sheets 5 on adjacent optical film materials 2 is the thickness of the optical film material 2, thereby preventing unevenness caused by the thickness of the double-sided adhesive lifting the film, and ensuring that the diffusion film 21, the lower light-enhancing film 22 and the upper light-enhancing film 23 can be evenly and tightly fitted on the light guide plate 1.

[0040] The above-mentioned light-guiding structure is applied to a backlight source, which also includes a light source 6, a rubber frame 7 and an iron frame 8. The light source is an LED lamp. The rubber frame 7 is arranged in the iron frame 8 and is integrally injection-molded with the iron frame 8. The interior of the rubber frame 7 is provided with a reflective sheet 9, a light guide plate 1 and an optical film material 2 from bottom to top. A side wall of the rubber frame 7 is provided with a plurality of limiting protrusions 10, and staggered limiting grooves 11 and mounting grooves 12 are formed between adjacent limiting protrusions 10. The protruding ear 3 is located in the limiting groove 11, and the light source 6 is arranged in the mounting groove 12.

[0041] A liquid crystal module comprises the above-mentioned backlight source.

[0042] The display module capable of being folded and aligned by a machine provided in Example 1 is further optimized. Specifically, Figure 3As shown, the light guide plate 1 is provided with an arc-shaped light guide groove 13 between two adjacent protruding ears 3. The light emitted by the light source 6 is incident into the light guide plate 1 through the arc-shaped surface. The setting of the arc-shaped light guide groove 13 can make the light be incident into the light guide plate 1 more evenly, thereby improving the uniformity of the light emitted from the light emitting surface of the light guide plate 1, that is, the brightness is more uniform, and there will be no light beams, halos and dark areas.

[0043] The display module capable of being folded and aligned by a machine provided in Example 2 is further optimized. Specifically, Figure 5 , 6 As shown, a plurality of heat dissipation holes 14 are arranged on the side wall of the rubber frame 7 corresponding to the mounting groove 12, and a heat dissipation rubber layer 15 is arranged on one side of the iron frame 8 located at the heat dissipation hole 14 to improve the heat dissipation effect.

[0044] The working principle of the light guide structure, backlight source and liquid crystal module provided by the utility model is as follows: by setting a protruding ear 3 on the light guide plate 1, and using the adhesive layer 4 on the protruding ear 3 to bond and fix each piece of optical film material 2, the optical film material 2 is fixed, the stability of the optical film material 2 on the light guide plate 1 is ensured, and the displacement of the optical film material 2 is avoided. At the same time, the protruding ear 3 is independently set on one side of the light guide plate 1, located outside the display area, and does not participate in the picture display, ensuring that the optical film material 2 on the light guide plate 1 in the display area is fully covered, avoiding display color difference, and improving the display effect. A limiting protrusion 10 is set on the glue frame 7, and the limiting protrusion 10 is used to form a limiting groove 11 and a mounting groove 12. After the protruding ear 3 on the light guide plate 1 is placed in the limiting groove 11, the light guide plate 1 can be limited and fixed, and the optical film material 2 on the light guide plate 1 can be further limited. At the same time, the light source 6 is set in the mounting groove 12 and installed independently to avoid interference caused by light generated between the light sources 6, further improving the display effect.

[0045] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral one; it can be a mechanical connection, an electrical connection, or communication with each other; it can be a direct connection, or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0046] Obviously, the embodiments described above are only some embodiments of the utility model, rather than all embodiments. The preferred embodiments of the utility model are given in the accompanying drawings, but they do not limit the patent scope of the utility model. The utility model can be implemented in many different forms. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the utility model more thorough and comprehensive. Although the utility model is described in detail with reference to the aforementioned embodiments, for those skilled in the art, it is still possible to modify the technical solutions recorded in the aforementioned specific implementation methods, or to replace some of the technical features therein with equivalents. Any equivalent structure made using the contents of the utility model specification and the accompanying drawings, directly or indirectly used in other related technical fields, is also within the scope of patent protection of the utility model.

Claims

1. A light guide structure, comprising a light guide plate and a plurality of optical films, wherein the optical films are stacked on the surface of the light guide plate, characterized in that: A plurality of protruding ears are arranged on one side of the light guide plate, and an adhesive layer is arranged on the protruding ears. Each piece of the optical film material is provided with protruding pieces staggered from each other, and the protruding pieces are arranged corresponding to the protruding ears.

2. A light guide structure according to claim 1, characterized in that: The optical film material consists of three pieces, which are a diffusion film, a lower brightness enhancement film and an upper brightness enhancement film from bottom to top.

3. The light guide structure according to claim 1, characterized in that: The surface of the protruding ear is polished and roughened to form a rough surface, and the adhesive layer is bonded to the rough surface.

4. The light guide structure according to claim 1, characterized in that: The protruding ears are set to have different thicknesses, and the thickness of the protruding ears corresponding to the protruding pieces on the lower optical film material is smaller than the protruding ears corresponding to the protruding pieces on the upper optical film material.

5. A light guide structure according to claim 4, characterized in that: The thickness difference between the protruding ears corresponding to the protruding pieces on the adjacent optical films is the thickness of the optical film.

6. The light guide structure according to claim 1, characterized in that: The light guide plate is provided with an arc-shaped light guide groove between two adjacent protruding ears.

7. A backlight source, characterized in that: It includes the light guiding structure, light source, rubber frame and iron frame as described in any one of claims 1 to 6, the rubber frame is arranged in the iron frame and is integrally injection molded with the iron frame, the interior of the rubber frame is provided with a reflective sheet, a light guide plate and an optical film material from bottom to top, a side wall of the rubber frame is provided with a plurality of limiting protrusions, and staggered limiting grooves and mounting grooves are formed between adjacent limiting protrusions, the protruding ear is located in the limiting groove, and the light source is arranged in the mounting groove.

8. The backlight source according to claim 7, characterized in that: A plurality of heat dissipation holes are arranged on the side wall of the rubber frame corresponding to the mounting groove.

9. The backlight source according to claim 8, characterized in that: A heat dissipation adhesive layer is arranged on one side of the iron frame located at the heat dissipation hole.

10. A liquid crystal module, characterized in that: It comprises the backlight source described in any one of claims 7-9.

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