Light guide plate fixing device and display equipment

Abstract

The utility model discloses a light guide plate fixing device and a display device, the light guide plate fixing device comprises a back plate, a light guide plate and at least two rubber pads, the back plate is provided with an accommodating groove and a light emitting channel penetrating through the bottom wall of the accommodating groove; the two rubber pads are both installed in the containing groove, each rubber pad comprises a first part and a second part integrally formed with the first part, and the hardness of the first part is larger than that of the second part; the light guide plate is located in the containing groove and covers the light outlet channel, the two corners, arranged diagonally, of the light guide plate are connected with the first parts of the two rubber pads in a clamped mode so that the light guide plate can be limited to move in the vertical direction, and the left side end and the right side end of the light guide plate correspond to the second parts of the two rubber pads so that the light guide plate can be limited to move in the transverse direction. When the rubber mat disclosed by the utility model is produced, one vulcanization mold can be used for injection molding, the number of the vulcanization molds required to be opened is small, the cost is low, the mold cost can be reduced, and the rubber mats can be mutually used in the assembly process.

Description

Technical Field

[0001] The utility model relates to the technical field of display structure, in particular to a light guide plate fixing device and a display device. Background Art

[0002] Liquid crystal display (LCD) has many advantages such as thin body, power saving, no radiation, etc., and has been widely used. Most of the LCD devices on the current market are backlight type LCD devices, which include a liquid crystal panel and a backlight module. The backlight module is divided into two types: side-entry backlight module and direct-down backlight module according to the different incident positions of the light source. The direct-down backlight module is to set the light source such as CCFL (Cold Cathode Fluorescent Lamp) or LED (Light Emitting Diode) behind the liquid crystal panel to directly form a surface light source to provide to the liquid crystal panel. The side-entry backlight module is to set the backlight source LED light bar (Light bar) at the edge of the back panel behind the side of the liquid crystal panel. The light emitted by the LED light bar enters the light guide plate (LGP) from the light incident surface on one side of the light guide plate, and is emitted from the light exiting surface of the light guide plate after reflection and diffusion, and then passes through the optical film group to form a surface light source to provide to the liquid crystal panel. Direct-type backlight has advantages such as high brightness and wide color gamut, but the body is thick and bulky. Side-type backlight has low brightness, but the body is thin, light and beautiful, meeting basic daily viewing needs. However, with the development of the LCD display industry, the market has put forward higher requirements for the brightness and thinness of the backlight. While being compatible with lightness and thinness, higher brightness and color gamut are required. In order to meet such market demands, it is necessary to input light from both the top and bottom sides of the side-type backlight. In order to prevent the gap from being too large or too small, resulting in differences in optical uniformity and the appearance of light shadows, it is necessary to ensure that the gap between the light guide plate and the LED lamp beads is constant. Considering that the light guide plate needs an expansion gap and an assembly gap, when the module is normally erected, the self-weight of the light guide plate will move downward, resulting in an excessively large gap on the upper side, resulting in inconsistencies in the upper and lower optical brightness; secondly, during the expansion of the light guide plate, left-right asymmetry and other phenomena will occur, resulting in differences in the left and right images and brightness. The market demand for high brightness and thinness is getting higher and higher, but the high defect rate of up and down, left and right uniformity and brightness difference is a problem that needs to be solved for thin, high-brightness side-entry modules. Generally, multiple silicone pads of different hardness are required for limiting.

[0003] as follows Figure 1As shown, the light guide plate 10 is placed in the receiving groove 21 of the back plate 20. Since the internal space of the receiving groove 21 is relatively small, in order to prevent the light guide plate 10 from moving up and down due to its own weight and to avoid optical light shadows on the sky side, it is necessary to add a special-shaped silicone pad 30 with higher hardness to the four corners of the light guide plate 10 for auxiliary limiting. Since it is attached near the light bar 40, the bottom space is relatively small, and another special-shaped silicone pad 30 is required for support. After the light guide plate 10 expands due to heat, in order to prevent the light guide plate 10 from asymmetric left and right deviation, at least four softer special-shaped silicone pads 30 are required to be added on the left and right for auxiliary limiting. The above-mentioned special-shaped silicone pads 30 require multiple vulcanization molds to correspond, which is costly. In addition, during assembly, operators may mix and match them, which greatly increases the risk and cost. Utility Model Content

[0004] The utility model provides a light guide plate fixing device and a display device, aiming to solve the problem that in the prior art, the light guide plate is placed in a receiving groove of a back plate, and a plurality of special-shaped silicone pads are required for auxiliary limiting for the up-down and left-right movement of the light guide plate. The above-mentioned special-shaped silicone pads need to be matched with a plurality of vulcanization molds, which is costly. In addition, during assembly, operators may mix and use the different types of silicone pads, which greatly increases the technical problem of risk and cost.

[0005] The utility model provides a light guide plate fixing device, comprising:

[0006] A back plate, wherein the back plate is provided with a receiving groove and a light outlet passage penetrating through the bottom wall of the receiving groove;

[0007] at least two rubber pads, both of which are installed in the receiving groove, the rubber pads comprising a first part and a second part integrally formed with the first part, and the hardness of the first part is greater than the hardness of the second part;

[0008] A light guide plate, the light guide plate is located in the accommodating groove and covers the light output channel, the two diagonally arranged corners of the light guide plate are respectively engaged with the first parts of the two rubber pads to limit the movement of the light guide plate in the vertical direction, and the left and right side ends of the light guide plate are respectively arranged corresponding to the second parts of the two rubber pads to limit the movement of the light guide plate in the lateral direction.

[0009] Furthermore, the number of the rubber pads is four, and the four rubber pads are two first support pads and two second support pads, respectively. The two first support pads are respectively installed at the two diagonally arranged corners of the light guide plate, and the two second support pads are respectively installed at the other two corners of the light guide plate.

[0010] Furthermore, the first portion of the first support pad is provided with a first groove, the two diagonally arranged corners of the light guide plate are respectively installed in the two first grooves, and the left and right side ends of the light guide plate are respectively abutted against or spaced apart from the second portions of the two first support pads.

[0011] Furthermore, the first part of the first support pad includes a first base and a first side block, the first base is fixed on the bottom wall of the accommodating groove, the first side block is protruded on the side of the first base away from the light guide plate, the first base is provided with the first groove and a first slot spaced apart from the first groove, and the second part of the first support pad is inserted into the first slot.

[0012] Furthermore, the second part of the first support pad includes a second base, a first connecting rod and a plurality of first elastic plates, the first connecting rod and the first elastic plate are respectively protruded on the adjacent two side surfaces of the second base, the second base is fixed on the bottom wall of the accommodating groove, the first connecting rod is connected to the first part of the first support pad, and the first elastic plate is abutted against or spaced apart from the light guide plate.

[0013] Furthermore, the first portion of the second support pad is provided with a second groove, the other two diagonally arranged corners of the light guide plate are respectively installed in the two second grooves, and the left and right side ends of the light guide plate are respectively abutted against or spaced apart from the second portions of the two second support pads.

[0014] Furthermore, the first part of the second support pad includes a third base and a second side block, the third base is fixed on the bottom wall of the accommodating groove, the second side block is protruded on the side of the third base away from the light guide plate, the third base is provided with the second groove and a second slot spaced apart from the second groove, and the second part of the second support pad is inserted into the second slot.

[0015] Furthermore, the second part of the second support pad includes a fourth base, a second connecting rod and a plurality of second elastic plates, the second connecting rod and the second elastic plates are respectively protruded on two adjacent side surfaces of the fourth base, the fourth base is fixed on the bottom wall of the accommodating groove, the second connecting rod is connected to the first part of the second support pad, and the second elastic plate is abutted against or spaced apart from the light guide plate.

[0016] Furthermore, the light guide plate fixing device also includes two light bars, both of which are installed in the accommodating groove and are spaced apart from the light guide plate, and the two light bars are respectively arranged close to the sky side and the ground side of the light guide plate.

[0017] The utility model also provides a display device, comprising the light guide plate fixing device as described above.

[0018] Compared with the prior art, the beneficial effects of the present invention include at least:

[0019] During production, the rubber pad of the utility model can be injection molded using a vulcanization mold. First, a first part with a higher hardness is injection molded in the vulcanization mold, and then a second part with a lower hardness is injection molded in the same vulcanization mold. The number of vulcanization molds required is small, the cost is low, and the mold cost can be reduced. The two rubber pads are respectively installed on two diagonally arranged corners of the light guide plate, which can be used to limit the movement of the light guide plate on the back plate, ensure that the gap between the light guide plate and the inner side wall of the accommodating groove is constant, and the intensity difference of light incident on the light guide plate is low, thereby improving the quality of the light guide plate fixing device. In addition, during the assembly process, the rubber pads can be used interchangeably, which reduces the assembly time and reduces the risk and cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a partial structural schematic diagram of a traditional backlight module;

[0021] Figure 2 A schematic diagram of the structure of a light guide plate fixing device provided in an embodiment of the utility model;

[0022] Figure 3 for Figure 2 A local enlarged schematic diagram of the middle A;

[0023] Figure 4 for Figure 2 A partial enlarged schematic diagram of point B in the middle;

[0024] Figure 5 A schematic structural diagram of a first support pad provided in an embodiment of the utility model;

[0025] Figure 6 A schematic structural diagram of a first part of a first support pad provided in an embodiment of the utility model;

[0026] Figure 7 A schematic structural diagram of the second part of the first support pad provided in an embodiment of the utility model;

[0027] Figure 8 A schematic diagram of the structure of a second support pad provided in an embodiment of the utility model;

[0028] Fig. 9 A schematic structural diagram of the first part of the second support pad provided in an embodiment of the utility model;

[0029] Fig.10 A schematic structural diagram of the second part of the second support pad provided in an embodiment of the utility model.

[0030] In the figure:

[0031] 10. Light guide plate; 20. Back plate; 21. Receiving groove; 30. Special-shaped silicone pad; 40. Light bar; 41. Light board; 42. LED lamp beads; 50. Rubber pad; 51. First support pad; 511. First part of the first support pad; 5111. First groove; 5112. First base; 5113. First side block; 5114. First slot; 512. Second part of the first support pad; 5121. Second base; 5122. First connecting rod; 5123. First elastic plate; 52. Second support pad; 521. First part of the second support pad; 5211. Second groove; 5212. Third base; 5213. Second side block; 5214. Second slot; 522. Second part of the second support pad; 5221. Fourth base; 5222. Second connecting rod; 5223. Second elastic plate. DETAILED DESCRIPTION

[0032] The present invention is further described below in conjunction with the accompanying drawings and specific implementation methods. It should be noted that, under the premise of no conflict, the various embodiments or technical features described below can be arbitrarily combined to form a new embodiment.

[0033] See also Figures 2 to 7 As shown, the embodiment of the utility model discloses a light guide plate fixing device, which includes a light guide plate 10, a back plate 20 and at least two rubber pads 50. The back plate 20 is provided with a receiving groove 21 and a light outlet channel penetrating the bottom wall of the receiving groove 21. The receiving groove 21 is a square groove. The two rubber pads 50 are respectively installed at two diagonally arranged corners in the receiving groove 21 by glue. The rubber pad 50 includes a first part and a second part integrally formed with the first part. The rubber pad 50 is "L"-shaped. The hardness of the first part of the rubber pad 50 is greater than the hardness of the second part of the rubber pad 50. When the back plate 20 is vertically arranged, the light guide plate 10 is located in the receiving groove 21 and covers the light outlet channel. The two diagonally arranged corners of the light guide plate 10 are respectively engaged with the first parts of the two rubber pads 50, so as to support the light guide plate 10 and limit the reciprocating movement of the light guide plate 10 along the vertical direction, i.e., the height direction of the back plate 20. The left and right side ends of the light guide plate 10 are respectively arranged corresponding to the second parts of the two rubber pads 50, so as to limit the reciprocating movement of the light guide plate 10 along the lateral direction, i.e., the length direction of the back plate 20. In this embodiment, it is only necessary to install a rubber pad 50 on each of the two diagonally arranged corners of the light guide plate 10, and install the rubber pad 50 on the back plate 20. The two rubber pads 50 can solve the problem of the displacement of the light guide plate 10 due to its own weight and thermal expansion, thereby reducing the working hours and production costs.

[0034] The rubber pad 50 can be a double-hardness rubber pad made of silicone material, or a double-hardness rubber pad made of a mixture of PC material and silicone material. The rubber pad 50 can be molded in the same vulcanization mold, and the number of vulcanization molds required is small, the cost is low, and during the assembly process, the rubber pads 50 can be used interchangeably, which reduces assembly time and reduces risk costs.

[0035] The rubber pad 50 can first be formed into a first part structure with higher hardness in a vulcanization mold, and then a second part structure with lower hardness can be further formed in the same vulcanization mold. In this way, fewer vulcanization molds are required and the cost is low. The first part structure material with higher hardness can be selected from silicone rubber or PC material, and the second part structure material with lower hardness can be selected from softer silicone rubber.

[0036] In the present embodiment, there are four rubber pads 50, which are respectively installed at the four corners in the accommodating groove 21, and the four corners of the light guide plate 10 are respectively engaged with the four rubber pads 50. Specifically, the four rubber pads 50 are two first support pads 51 and two second support pads 52. The first support pads 51 and the second support pads 52 are two components arranged in a mirror-symmetrical manner. The two first support pads 51 are respectively installed at two diagonally arranged corners of the light guide plate 10, and the two second support pads 52 are respectively installed at the other two corners of the light guide plate 10. The two first support pads 51 and the two second support pads 52 are respectively attached to the four corners of the light guide plate 10, so as to support and limit the light guide plate 10 on the back plate 20, which can not only solve the optical poor phenomenon, but also reduce risks and costs.

[0037] The first part 511 of the first support pad and the second part 512 of the first support pad are of an integrally formed design, the hardness of the first part 511 of the first support pad is greater than the hardness of the second part 512 of the first support pad, the hardness of the first part 511 of the first support pad is above 70 degrees, and the hardness of the second part 512 of the first support pad is 30-50 degrees, the first part 511 of the first support pad is provided with a first groove 5111, and the two diagonally arranged corners of the light guide plate 10 are respectively installed in the two first grooves 5111 to support the light guide plate 10 and limit the movement of the light guide plate 10 in the vertical direction, the left and right side ends of the light guide plate 10 are respectively abutted or spaced against the second parts 512 of the two first support pads to limit the movement of the light guide plate 10 in the lateral direction, so as to reduce the movement of the light guide plate 10 in the length direction of the back plate 20 and prevent the light guide plate 10 from being scratched.

[0038] The first part 511 of the first support pad includes a first base 5112 and a first side block 5113. The first base 5112 is fixed on the bottom wall of the accommodating groove 21. The first side block 5113 is protruded on the side of the first base 5112 away from the light guide plate 10. The first side block 5113 can abut against the inner wall of the accommodating groove 21. The first base 5112 is provided with the first groove 5111 and a first slot 5114 spaced apart from the first groove 5111. The second part 512 of the first support pad is inserted into the first slot 5114. The second part 512 of the first support pad and the first part 511 of the first support pad are integrally formed.

[0039] The second part 512 of the first support pad includes a second base 5121, a first connecting rod 5122 and a plurality of first elastic plates 5123. The first connecting rod 5122 and the first elastic plates 5123 are respectively protruded on the adjacent two side surfaces of the second base 5121. The plurality of first elastic plates 5123 are serrated. The second base 5121 is fixed on the bottom wall of the accommodating groove 21. The first connecting rod 5122 is connected to the first part 511 of the first support pad. The first elastic plates 5123 are abutted against or spaced apart from the light guide plate 10. Under the extrusion of the light guide plate 10, the first elastic plates 5123 can be compressed to provide space for the expansion and displacement of the light guide plate 10, which can greatly ensure the stability between the light guide plate 10 and the back plate 20.

[0040] Please read further Figure 4 , Figures 8 to 10 As shown, the first part 521 of the second support pad and the second part 522 of the second support pad are designed to be integrally formed, the hardness of the first part 521 of the second support pad is greater than the hardness of the second part 522 of the second support pad, the hardness of the first part 521 of the second support pad is more than 70 degrees, and the hardness of the second part 522 of the second support pad is 30-50 degrees, the first part 521 of the second support pad is provided with a second groove 5211, and the other two corners of the light guide plate 10 diagonally arranged are respectively installed in the two second grooves 5211 to further limit the reciprocating movement of the light guide plate 10 in the vertical direction, the left and right side ends of the light guide plate 10 are respectively abutted or spaced apart from the second parts 522 of the two second support pads to further limit the reciprocating movement of the light guide plate 10 in the lateral direction, so that the movement of the light guide plate 10 in the length direction of the back plate 20 is reduced to prevent scratches on the light guide plate 10, the second part 522 of the second support pad and the second part 512 of the first support pad are both abutted against the light guide plate 10 at the same time or spaced apart from the light guide plate 10 at the same time.

[0041] The first part 521 of the second support pad includes a third base 5212 and a second side block 5213. The third base 5212 is fixed on the bottom wall of the accommodating groove 21. The second side block 5213 is protruded on the side of the third base 5212 away from the light guide plate 10. The second side block 5213 can abut against the inner wall of the accommodating groove 21. The third base 5212 is provided with the second groove 5211 and a second slot 5214 spaced apart from the second groove 5211. The second part 522 of the second support pad is inserted into the second slot 5214. The second part 522 of the second support pad and the first part 521 of the second support pad are integrally formed.

[0042] The second part 522 of the second support pad includes a fourth base 5221, a second connecting rod 5222 and a plurality of second elastic plates 5223. The second connecting rod 5222 and the second elastic plates 5223 are respectively protruded on the adjacent two side surfaces of the fourth base 5221. The plurality of second elastic plates 5223 are serrated. The fourth base 5221 is fixed on the bottom wall of the accommodating groove 21. The second connecting rod 5222 is connected to the first part 521 of the second support pad. The second elastic plates 5223 are abutted against or spaced apart from the light guide plate 10. Under the extrusion of the light guide plate 10, the second elastic plates 5223 can be compressed to provide space for the expansion and displacement of the light guide plate 10, which can greatly ensure the stability between the light guide plate 10 and the back plate 20.

[0043] The light guide plate fixing device also includes two light strips 40, both of which are installed in the accommodating groove 21 and are spaced apart from the light guide plate 10, and the two light strips 40 are respectively arranged close to the sky side and the ground side of the light guide plate 10, one of the light strips 40 is located between the first support pad 51 and the second support pad 52 on the sky side, and the other light strip 40 is located between the first support pad 51 and the second support pad 52 on the ground side. The light guide plate fixing device adopts a double-sided light input mode, which can effectively enhance the optical intensity incident on the light guide plate 10.

[0044] In some embodiments, the light strip 40 includes a light board 41 and a plurality of LED lamp beads 42 mounted on the light board 41. The light guide plate 10 is fixed on the inner wall of the accommodating groove 21. The LED lamp beads 42 are arranged facing the light guide plate 10. The four rubber pads 50 can also be used to maintain a stable gap between the light guide plate 10 and the LED lamp beads 42.

[0045] In this embodiment, the rubber pad 50 adopts a dual-hardness integrated design, which can prevent the risk of mixing and leaking materials during the assembly process. The first part with higher hardness can support the light guide plate 10 and limit the up and down movement of the light guide plate 10, ensuring the gap between the light guide plate 10 and the LED lamp beads 42 in the vertical direction, and preventing optical defects caused by too large a gap, such as poor uniformity, lamp shadows, and brightness that do not meet standards, etc. The second part with lower hardness can limit the left and right movement of the light guide plate 10 to prevent the light guide plate 10 from shifting left and right, and the poor picture caused by asymmetry. When the light guide plate 10 is heated, the multiple first elastic plates 5123 with a serrated shape and the multiple second elastic plates 5223 with a serrated shape can be compressed to provide space for the expansion and shift of the light guide plate 10, which can greatly ensure the stability between the light guide plate 10 and the back plate 20.

[0046] The utility model also discloses a display device, comprising the light guide plate fixing device as described above.

[0047] The assembly steps of the light guide plate fixing device are as follows:

[0048] Step S101, first place the back plate 20 with the receiving groove 21 on the table with the side facing the operator, and attach two light bars 40 to the upper and lower sides of the receiving groove 21 in sequence;

[0049] Step S102, then four rubber pads 50 are respectively bonded to the four corners of the receiving groove 21;

[0050] Step S103, installing the reflective paper on the bottom wall of the receiving groove 21, and the reflective paper covers the light exit channel;

[0051] Step S104 , finally assembling the light guide plate 10 , and installing the four corners of the light guide plate 10 on the four rubber pads 50 respectively.

[0052] To summarize, during production, the rubber pad 50 of the utility model can be injection molded using a vulcanization mold. First, a first part with a higher hardness is injection molded in the vulcanization mold, and then the second part with a lower hardness is injection molded in the same vulcanization mold. The number of vulcanization molds required is small, the cost is low, and the mold cost can be reduced. The two rubber pads 50 are respectively installed on the two diagonally arranged corners of the light guide plate 10, which can be used to limit the movement of the light guide plate 10 on the back plate 20, ensuring that the gap between the light guide plate 10 and the inner wall of the accommodating groove 21 is constant, and the intensity difference of light incident on the light guide plate 10 is low, thereby improving the quality of the light guide plate fixing device. In addition, during the assembly process, the rubber pads 50 can be used interchangeably, which reduces the assembly time, risks and costs.

[0053] The above-mentioned implementation modes are only preferred implementation modes of the present invention, and cannot be used to limit the protection scope of the present invention. Any non-substantial changes and substitutions made by technicians in this field on the basis of the present invention shall fall within the scope of protection required by the present invention.

Claims

1. A light guide plate fixing device, characterized in that: include: A back plate, wherein the back plate is provided with a receiving groove and a light outlet passage penetrating through the bottom wall of the receiving groove; at least two rubber pads, both of which are installed in the receiving groove, the rubber pads comprising a first part and a second part integrally formed with the first part, and the hardness of the first part is greater than the hardness of the second part; A light guide plate, the light guide plate is located in the accommodating groove and covers the light output channel, the two diagonally arranged corners of the light guide plate are respectively engaged with the first parts of the two rubber pads to limit the movement of the light guide plate in the vertical direction, and the left and right side ends of the light guide plate are respectively arranged corresponding to the second parts of the two rubber pads to limit the movement of the light guide plate in the lateral direction.

2. The light guide plate fixing device according to claim 1, characterized in that: There are four rubber pads, which are two first support pads and two second support pads. The two first support pads are respectively installed at the two diagonally arranged corners of the light guide plate, and the two second support pads are respectively installed at the other two corners of the light guide plate.

3. The light guide plate fixing device according to claim 2, characterized in that: The first portion of the first support pad is provided with a first groove, and the two diagonally arranged corners of the light guide plate are respectively installed in the two first grooves, and the left and right side ends of the light guide plate are respectively abutted against or spaced apart from the second portions of the two first support pads.

4. The light guide plate fixing device according to claim 3, characterized in that: The first part of the first support pad includes a first base and a first side block, the first base is fixed on the bottom wall of the accommodating groove, the first side block is protruded on the side of the first base away from the light guide plate, the first base is provided with the first groove and a first slot spaced apart from the first groove, and the second part of the first support pad is inserted into the first slot.

5. The light guide plate fixing device according to claim 3, characterized in that: The second part of the first support pad includes a second base, a first connecting rod and a plurality of first elastic plates, the first connecting rod and the first elastic plate are respectively protruded on the adjacent two side surfaces of the second base, the second base is fixed on the bottom wall of the accommodating groove, the first connecting rod is connected to the first part of the first support pad, and the first elastic plate is abutted against or spaced apart from the light guide plate.

6. The light guide plate fixing device according to claim 2, characterized in that: The first part of the second support pad is provided with a second groove, and the other two corners of the light guide plate arranged diagonally are respectively installed in the two second grooves, and the left and right side ends of the light guide plate are respectively abutted against or spaced apart from the second parts of the two second support pads.

7. The light guide plate fixing device according to claim 6, characterized in that: The first part of the second support pad includes a third base and a second side block, the third base is fixed on the bottom wall of the accommodating groove, the second side block is protruded on the side of the third base away from the light guide plate, the third base is provided with the second groove and a second slot spaced apart from the second groove, and the second part of the second support pad is inserted into the second slot.

8. The light guide plate fixing device according to claim 6, characterized in that: The second part of the second support pad includes a fourth base, a second connecting rod and a plurality of second elastic plates, the second connecting rod and the second elastic plate are respectively protruded on two adjacent side surfaces of the fourth base, the fourth base is fixed on the bottom wall of the accommodating groove, the second connecting rod is connected to the first part of the second support pad, and the second elastic plate is abutted against or spaced apart from the light guide plate.

9. The light guide plate fixing device according to any one of claims 1 to 8, characterized in that: The light guide plate fixing device also includes two light bars, both of which are installed in the accommodating groove and are spaced apart from the light guide plate. The two light bars are respectively arranged close to the sky side and the ground side of the light guide plate.

10. A display device, characterized in that: It comprises the light guide plate fixing device as described in any one of claims 1-9.

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