Display module and display device

Abstract

The utility model relates to the technical field of liquid crystal display, and discloses a display module and a display device. The display module comprises a light guide plate, a light bar, a fixing plate and a back plate, and a plurality of positioning grooves are formed in one side of the light guide plate; the light bar comprises a circuit board and a plurality of LEDs arranged on the circuit board, and the LEDs can be clamped in the positioning grooves in a one-to-one correspondence mode; the fixing plate is arranged on the side, away from the light guide plate, of the circuit board and provided with a first protrusion. The light guide plate is arranged on the inner side of the back plate, a first groove is formed in the back plate, and the first protrusion can be clamped in the first groove. According to the display module, the positioning grooves in one-to-one correspondence with the LEDs are formed in the light inlet side of the light guide plate, meanwhile, the fixing plate is arranged, secondary clamping and fixing of the light guide plate and the light bar are achieved, gaps between the light guide plate and the LEDs caused by the fact that the light guide plate moves towards the light outlet side are effectively reduced, and then the situation that the display module leaks light is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of liquid crystal display, in particular to a display module and a display device. Background Art

[0002] In the prior art, as Figure 1 shown in the partial schematic diagram of the display module, the display module includes a backplane 400, a light guide plate 100, a lamp bar 200 and a reflector 212. The light guide plate 100 is usually fixed to the backplane 400 through glue on the light-emitting side and the light-incident side. However, the adhesiveness of the tape will gradually weaken over time. After the adhesiveness of the tape weakens, the connection between the light guide plate 100 and the backplane 400 becomes unreliable. As Figure 2 shown in the schematic diagram of the light guide plate of the display module after deflection, the light guide plate 100 will deflect towards the light-emitting side, resulting in a gap between the light guide plate 100 on the light-incident side and the lamp bar 200. Then, light will leak out along the gap between the light guide plate 100 and the reflector 212, thus causing a light leakage problem and affecting the display effect.

[0003] Therefore, there is an urgent need for a display module and a display device to solve the above problems. Summary of the Utility Model

[0004] Based on the above, the purpose of the utility model is to provide a display module and a display device, which can effectively reduce light leakage, improve the display effect, and at the same time have a more reliable connection.

[0005] To achieve the above object, the utility model adopts the following technical solutions:

[0006] A display module, comprising:

[0007] A light guide plate, on one side of which there are provided a plurality of positioning grooves;

[0008] A lamp bar, including a circuit board and a plurality of LEDs arranged on the circuit board, and the plurality of LEDs can be respectively and correspondingly clamped in the positioning grooves;

[0009] A fixing plate, arranged on the side of the circuit board away from the light guide plate, and the fixing plate is provided with a first protrusion;

[0010] A backplane, the light guide plate is arranged inside the backplane, and the backplane is provided with a first groove, and the first protrusion can be clamped in the first groove.

[0011] As a preferred solution of the display module, a second protrusion is arranged on the first protrusion, a second groove is arranged on the backplane, and the second groove is communicated with the first groove. When the first protrusion is placed in the first groove, the second protrusion can be placed in the second groove.

[0012] As a preferred embodiment of the display module, the fixing plate includes a fixed bottom plate, a fixed side plate and a fixed end plate which are connected to each other. The fixed bottom plate can be placed between the light guide plate and the back plate. The fixed side plate is arranged at one end of the light bar away from the light guide plate. The fixed end plate is arranged at both ends of the fixed bottom plate and the fixed side plate. The first protrusion is arranged on the fixed end plate and is located outside the fixed end plate.

[0013] As a preferred embodiment of the display module, the fixing plate further includes a fixed top plate. The fixed top plate is connected to the fixed end plate and abuts against one side of the light guide plate away from the back plate.

[0014] As a preferred embodiment of the display module, a first avoidance groove is arranged on one side of the light guide plate close to the back plate. The fixed bottom plate can be placed in the first avoidance groove.

[0015] As a preferred embodiment of the display module, the light guide plate is provided with positioning lugs, and the fixing plate is provided with positioning notches. The positioning lugs can be placed in the positioning notches.

[0016] As a preferred embodiment of the display module, the positioning lugs are further provided with clamping flanges, and the clamping flanges can be clamped with the edges of the positioning notches.

[0017] As a preferred embodiment of the display module, the circuit board includes a mounting plate and a reflecting plate which are connected to each other. The LED is arranged on the mounting plate. The reflecting plate is arranged between the light guide plate and the back plate. A reflecting layer is arranged on the inner side of the reflecting plate.

[0018] As a preferred embodiment of the display module, a second avoidance groove is arranged on one side of the light guide plate away from the back plate. The reflecting plate can be placed in the second avoidance groove.

[0019] A display device includes the display module according to any one of the above embodiments.

[0020] The beneficial effects of the present utility model are as follows:

[0021] In the present utility model, by arranging positioning grooves corresponding to the LEDs one by one on the light incident side of the light guide plate and simultaneously arranging a fixing plate, secondary clamping and fixing of the light guide plate and the light bar are realized, effectively reducing the gap between the light guide plate and the LED caused by the movement of the light guide plate towards the light emitting side, and further reducing the occurrence of light leakage in the display module. Among them, the fixing plate is provided with a first protrusion, and the back plate is provided with a first groove. Through the clamping of the first protrusion and the first groove, the connection between the fixing plate and the back plate is realized, and further the secondary fixing between the light guide plate and the light bar is realized, and the connection is more reliable. Description of the Drawings

[0022] To more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for description in the embodiments of the present utility model. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the content of the embodiments of the present utility model and these drawings.

[0023] Figure 1 is a partial schematic view of the display module provided by the background art;

[0024] Figure 2 is a schematic view of the light guide plate of the display module provided by the background art after offset;

[0025] Figure 3 is a schematic view of the display module provided by the specific implementation manner of the present utility model;

[0026] Figure 4 is Figure 3 a partial enlarged schematic view of part A in

[0027] Figure 5 is Figure 4 a schematic view of the hidden fixing plate;

[0028] Figure 6 is Figure 5 a schematic view of the hidden light bar;

[0029] Figure 7 is a partial schematic view of the fixing plate of the display module provided by the specific implementation manner of the present utility model.

[0030] In the figure:

[0031] 100, light guide plate; 110, positioning groove; 120, first avoidance groove; 130, positioning lug; 140, clamping flange; 150, second avoidance groove;

[0032] 200, light bar; 210, circuit board; 211, mounting plate; 212, reflector;

[0033] 300, fixing plate; 310, fixing bottom plate; 320, fixing side plate; 330, fixing end plate; 331, first protrusion; 332, second protrusion; 340, fixing top plate; 350, positioning notch;

[0034] 400, back plate; 410, first groove; 420, second groove. Specific implementation manner

[0035] Embodiments of the present utility model will be described in detail below. Examples of the embodiments are shown in the accompanying drawings, where like or similar reference numerals denote like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the accompanying drawings are exemplary and are intended to explain the present utility model, and should not be construed as limiting the present utility model.

[0036] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions.

[0037] Unless otherwise clearly defined and limited, the terms "installed", "connected", "connected", "fixed" should be understood in a broad sense. For example, it can be a fixed connection or a detachable connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium, and it can be the communication inside two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0038] In the present utility model, unless otherwise clearly defined and limited, the first feature being "above" or "below" the second feature may include the first and second features being in direct contact, or may include the first and second features not being in direct contact but being in contact through other features therebetween. Moreover, the first feature being "above", "over" and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or merely indicating that the first feature is at a higher horizontal height than the second feature. The first feature being "below", "under" and "beneath" the second feature includes the first feature being directly below and obliquely below the second feature, or merely indicating that the first feature is at a lower horizontal height than the second feature.

[0039] The technical solution of the present utility model will be further described below in conjunction with the accompanying drawings and through specific embodiments.

[0040] Figure 3 is a schematic diagram of a display module provided by a specific embodiment of the present utility model; Figure 4 is Figure 3 a partial enlarged schematic diagram of part A in Figure 5 is Figure 4 a schematic diagram of hiding the fixing plate;Figure 6 Yes Figure 5 Schematic diagram of a hidden light bar; Figure 7 It is a partial schematic diagram of the fixing plate of the display module provided by the specific embodiment of the present invention; as Figures 3 - 7 shown, this embodiment provides a display module, which includes a light guide plate 100, a light bar 200, a fixing plate 300 and a back plate 400. A plurality of positioning grooves 110 are provided on one side of the light guide plate 100; the light bar 200 includes a circuit board 210 and a plurality of LEDs arranged on the circuit board 210, and the plurality of LEDs can be correspondingly clamped into the positioning grooves 110 one by one; the fixing plate 300 is arranged on the side of the circuit board 210 facing away from the light guide plate 100, and the fixing plate 300 is provided with a first protrusion 331; the light guide plate 100 is arranged inside the back plate 400, and a first groove 410 is provided on the back plate 400, and the first protrusion 331 can be clamped into the first groove 410.

[0041] By arranging the light guide plate 100 on the light incident side to be correspondingly clamped into the positioning grooves 110 one by one with the LEDs, and at the same time arranging the fixing plate 300, the secondary clamping and fixing of the light guide plate 100 and the light bar 200 are realized, effectively reducing the gap between the light guide plate 100 and the LEDs caused by the movement of the light guide plate 100 towards the light emitting side, and further reducing the occurrence of light leakage in the display module. Among them, the fixing plate 300 is provided with a first protrusion 331, and the back plate 400 is provided with a first groove 410. Through the clamping of the first protrusion 331 and the first groove 410, the connection between the fixing plate 300 and the back plate 400 is realized, and further the secondary fixing between the light guide plate 100 and the light bar 200 is realized, and the connection is more reliable.

[0042] In this embodiment, the fixing plate 300 includes a fixed bottom plate 310, a fixed side plate 320 and a fixed end plate 330 that are connected to each other. The fixed bottom plate 310 can be placed between the bottom of the light guide plate 100 and the back plate 400. The fixed side plate 320 is arranged on the side of the light bar 200 facing away from the light guide plate 100. The fixed end plate 330 is arranged at the same side end of the fixed bottom plate 310 and the fixed side plate 320. Among them, the fixed side plate 320 is used for secondary fixing of the light bar 200; the first protrusion 331 is arranged on the fixed end plate 330, that is, the fixed end plate 330 is used to realize the connection between the fixing plate 300 and the back plate 400.

[0043] Specifically, a second protrusion 332 is provided on the first protrusion 331, and a second groove 420 is provided on the back plate 400. The second groove 420 is communicated with the first groove 410. When the first protrusion 331 is placed in the first groove 410, the second protrusion 332 can be placed in the second groove 420. Preferably, the second protrusion 332 is provided on the outer side of the first protrusion 331, and the second groove 420 is provided in a through manner, facilitating the operator to observe whether the clamping is in place. It can be understood that both the first protrusion 331 and the second protrusion 332 are elastically provided, facilitating clamping through elastic deformation.

[0044] Furthermore, the fixing plate 300 further includes a fixing top plate 340. The fixing top plate 340 is connected to the fixing side plate 320 and abuts against the top of the light guide plate 100. That is, the light guide plate 100 and the light bar 200 are arranged between the fixed end plate 330 and the fixed bottom plate 310, further improving the connection reliability of the light guide plate 100 in the vertical direction of its surface. It is worth noting that the length of the fixing top plate 340 is less than the lengths of the fixing side plates 320 and 320, avoiding interference with the connection between the fixing plate 300 and the light bar 200.

[0045] Preferably, to accommodate the fixed bottom plate 310, a first avoidance groove 120 is provided at the bottom of the light guide plate 100. When the fixing plate 300 is connected to the back plate 400, the fixed bottom plate 310 can be placed in the first avoidance groove 120.

[0046] As an alternative solution of the display module, the light guide plate 100 is provided with positioning lugs 130, and the fixing plate 300 is provided with positioning notches 350. The positioning lugs 130 can be placed in the positioning notches 350. Through the cooperation of the positioning lugs 130 and the positioning notches 350, the connection accuracy between the fixing plate 300 and the light guide plate 100 is improved. Exemplarily, two positioning lugs 130 are provided, which are respectively arranged at both ends of a plurality of positioning grooves 110, and the positioning notches 350 are correspondingly arranged.

[0047] Specifically, the positioning lug 130 is further provided with a clamping flange 140. The clamping flange 140 can be clamped with the edge of the positioning notch 350. By providing the clamping flange 140, while the positioning lug 130 realizes positioning, the connection between the light guide plate 100 and the fixing plate 300 can be further realized, improving the connection reliability between the two and further improving the firmness of the fixing plate 300 for fixing the light bar 200. In this embodiment, the positioning notch 350 penetrates the fixing side plate 320 and the fixed bottom plate 310. At the same time, the clamping flange 140 is arranged parallel to the fixed bottom plate 310, that is, the clamping flange 140 is clamped on the side of the fixed bottom plate 310 close to the back plate 400.

[0048] Further, the circuit board 210 includes a mounting plate 211 and a reflector 212 which are connected to each other. By providing the mounting plate 211, it is used to realize the mounting of multiple LEDs. By providing the reflector 212 located between the light guide plate 100 and the back plate 400, and a reflective layer is provided on the inner side of the reflector 212, which is used to reflect the light irradiated thereon, further avoiding the occurrence of light leakage.

[0049] Optionally, a second avoidance groove 150 is provided at the top of the light guide plate 100. When the light bar 200 is connected to the back plate 400, the reflector 212 can be placed in the second avoidance groove 150.

[0050] This embodiment also discloses a display device, including the display module described in any of the above solutions. For the display device provided with the above display module, there is no light leakage on the light incident side, and thus the display effect is better.

[0051] The above content is only the preferred embodiment of the present invention. For those of ordinary skill in the art, according to the idea of the present invention, there will be changes in the specific implementation manners and application scopes. The content of this specification should not be construed as a limitation to the present invention.

Claims

1. A display module, characterized in that: include: A light guide plate (100), wherein a plurality of positioning grooves (110) are provided on one side of the light guide plate (100); A light bar (200) comprising a circuit board (210) and a plurality of LEDs arranged on the circuit board (210), wherein the plurality of LEDs can be snap-fitted into the positioning grooves (110) in a one-to-one correspondence; A fixing plate (300) is arranged on a side of the circuit board (210) facing away from the light guide plate (100), and the fixing plate (300) is provided with a first protrusion (331); A back plate (400), the light guide plate (100) is arranged on the inner side of the back plate (400), a first groove (410) is arranged on the back plate (400), and the first protrusion (331) can be snap-fitted into the first groove (410).

2. The display module according to claim 1, characterized in that: A second protrusion (332) is arranged on the first protrusion (331), and a second groove (420) is arranged on the back plate (400). The second groove (420) is connected to the first groove (410). When the first protrusion (331) is placed in the first groove (410), the second protrusion (332) can be placed in the second groove (420).

3. The display module according to claim 1, characterized in that: The fixed plate (300) comprises a fixed bottom plate (310), a fixed side plate (320) and a fixed end plate (330) which are connected to each other; the fixed bottom plate (310) can be placed between the bottom of the light guide plate (100) and the back plate (400); the fixed side plate (320) is arranged on a side of the light bar (200) away from the light guide plate (100); the fixed end plate (330) is arranged on the same side end of the fixed bottom plate (310) and the fixed side plate (320); and the first protrusion (331) is arranged on the fixed end plate (330).

4. The display module according to claim 3, characterized in that: The fixed plate (300) further comprises a fixed top plate (340), wherein the fixed top plate (340) is connected to the fixed side plate (320) and abuts against the top of the light guide plate (100).

5. The display module according to claim 3, characterized in that: The bottom of the light guide plate (100) is provided with a first avoidance groove (120), and the fixed bottom plate (310) can be placed in the first avoidance groove (120).

6. The display module according to claim 1, characterized in that: The light guide plate (100) is provided with a positioning lug (130), and the fixing plate (300) is provided with a positioning notch (350), and the positioning lug (130) can be placed in the positioning notch (350).

7. The display module according to claim 6, characterized in that: The positioning lug (130) is also provided with a snap-fit ​​flange (140), and the snap-fit ​​flange (140) can be snap-fitted with the edge of the positioning notch (350).

8. The display module according to claim 1, characterized in that: The circuit board (210) comprises a mounting plate (211) and a reflective plate (212) which are connected to each other, the LED is arranged on the mounting plate (211), the reflective plate (212) is arranged between the light guide plate (100) and the back plate (400), and a reflective layer is arranged on the inner side of the reflective plate (212).

9. The display module according to claim 8, characterized in that: A second avoidance groove (150) is provided on the top of the light guide plate (100), and the reflective plate (212) can be placed in the second avoidance groove (150).

10. A display device, characterized in that Comprising a display module as described in any one of claims 1-9.

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