Thickened structure of backlight module

Abstract

The utility model discloses a kind of thickening structure of backlight module, backlight glue frame, its bottom has backlight cavity for the insertion assembly of light guide assembly;Backlight iron frame, it is formed at the side wall of the bottom of the backlight glue frame and is buckled, for the surrounding of the backlight cavity;Boss, it is formed in the direction of the surface of backlight iron frame towards the backlight cavity, and it is used for supporting to be in contact with the back of light guide assembly, high clearance is formed between the top and bottom of the boss for thickening the thickness of the backlight module whole body.The thickening structure of backlight module provided in the utility model, on the basis of maintaining original backlight glue frame and light guide assembly, the setting of boss is carried out on the surface of backlight iron frame, so the height of boss can be added to realize the increase of the thickness of backlight module whole body, and it is not necessary to carry out mold opening design, so the cost of production can be effectively reduced.Meanwhile, because boss is formed by stamping on the contact of conventional backlight iron frame, it is not necessary to carry out re-mold opening.

Description

Technical Field

[0001] This utility model relates to the field of backlight module technology, and in particular to a thickened structure for a backlight module. Background Technology

[0002] The backlight module is one of the key components of an LCD panel. Its function is to provide sufficient brightness and evenly distributed light source so that images can be displayed correctly. A backlight is a light source located behind the LCD, and its luminous effect directly affects the visual effect of the LCD module (LCM). The liquid crystal itself does not emit light; it displays graphics or characters as a result of its modulation of light.

[0003] In some application scenarios, thicker backlight modules are required. Therefore, it is necessary to thicken the conventional backlight module. Generally, it is necessary to redesign the thickness of the backlight frame and light guide plate and then open a new mold. This makes the overall process more complicated and the mold opening cost higher. To address this, a thickened backlight module structure is proposed. Utility Model Content

[0004] Therefore, it is necessary to provide a thickened structure for the backlight module to address the above-mentioned technical problems. Without changing the backlight frame and light guide plate, the design of the boss is only made on the backlight iron frame, which can increase the overall thickness of the backlight module and save mold opening costs.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] A thickened structure for a backlight module includes:

[0007] A backlight housing with a backlight cavity at the bottom for inserting and assembling the light guide assembly;

[0008] A backlight metal frame, which forms a fastener at the side wall at the bottom of the backlight rubber frame, is used to enclose the backlight cavity;

[0009] A boss is formed on the surface of the backlight frame in the direction of the backlight cavity and abuts against the back of the light guide assembly for support. A heightening gap is formed between the top and bottom of the boss to increase the overall thickness of the backlight module.

[0010] Furthermore, a TFT liquid crystal display component is embedded in the top of the backlight frame, and the backlight cavity illuminates the TFT liquid crystal display component through a light-transmitting groove;

[0011] The protrusion avoids the effective display area of ​​the TFT liquid crystal display component.

[0012] Furthermore, the boss has four protrusions, which are distributed at the four corners of the inner side of the backlight iron frame.

[0013] Furthermore, the boss includes a support portion and a heightening portion, with the heightening portion located on both sides of the support portion for connection with the backlight iron frame.

[0014] Furthermore, the top surface of the heightening portion is planar and is parallel to the bottom of the light guide assembly.

[0015] Furthermore, the flatness of the top of the boss is within 0.05 millimeters.

[0016] Furthermore, the TFT liquid crystal display component has non-display areas except for the effective display area, and the effective display area corresponds to the light-transmitting groove.

[0017] Furthermore, the boss is disposed on the outside of the light-transmitting groove on the backlight iron frame.

[0018] Furthermore, the light guide assembly includes a light enhancement module, a light guide plate, and a reflective film stacked on top of each other, with the light enhancement module disposed in close contact with the light transmission groove;

[0019] The top of the protrusion abuts against the surface of the reflective film to provide support for the light guide assembly.

[0020] Furthermore, the light guide assembly also includes an LED light source disposed on one side of the light guide plate, and an LED FPC is connected to the LED light source.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The thickened structure of the backlight module provided by this utility model, while maintaining the original backlight frame and light guide components, adds a boss to the surface of the backlight frame. This increases the overall thickness of the backlight module by increasing the height of the boss, without requiring mold design, thus effectively reducing production costs.

[0023] At the same time, since the boss is stamped on the contact surface of the conventional backlight iron frame, there is no need to open a new mold, which reduces the cost, makes it easy to operate, and makes it more practical. Attached Figure Description

[0024] Figure 1 A schematic diagram of the thickened structure of the backlight module provided by this utility model;

[0025] Figure 2 A schematic diagram of the effective display area structure of the thickened backlight module provided by this utility model;

[0026] Figure 3 A schematic diagram of the thickened backlight frame portion of the backlight module provided by this utility model;

[0027] Figure 4 The thickened structure of the backlight module provided by this utility model Figure 3 Enlarged structural diagram at point A in the middle;

[0028] Figure 5 A schematic diagram of the thickened backlight iron frame structure of the backlight module provided by this utility model.

[0029] The markings in the diagram are explained as follows:

[0030] Backlight frame 1, backlight cavity 11, light transmission groove 12;

[0031] Light guide assembly 2, light enhancement module 21, light guide plate 22, reflective film 23, LED light source 24, LED FPC 25;

[0032] Backlight iron frame 3;

[0033] 4. Boss; 41. Support; 42. Heightening part; 43. Heightening gap;

[0034] TFT liquid crystal display component 5, effective display area 51, non-display area 52. Detailed Implementation

[0035] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0036] As described in the background section, in some application scenarios, it is necessary to use backlight modules with increased thickness. Therefore, it is necessary to thicken the conventional backlight module. Generally, it is necessary to redesign the thickness of the backlight frame and light guide plate and then open a new mold. This makes the overall process more complicated and the cost higher.

[0037] To solve this technical problem, this utility model provides a thickened structure for a backlight module, which is applied to a backlight module.

[0038] For details, please refer to Figures 1-5 As shown, the thickened structure of the backlight module specifically includes:

[0039] The backlight frame 1 has a backlight cavity 11 at its bottom for inserting and assembling the light guide assembly 2;

[0040] The backlight iron frame 3 is fastened to the side wall at the bottom of the backlight rubber frame 1 to enclose the backlight cavity 11;

[0041] A boss 4 is formed on the surface of the backlight iron frame 3 in the direction of the backlight cavity 11 and abuts against the back of the light guide assembly 2 for support. A heightening gap 43 is formed between the top and bottom of the boss 4 to increase the overall thickness of the backlight module.

[0042] The thickened structure of the backlight module provided by this utility model, while maintaining the original backlight frame 1 and light guide component 2, sets a boss 4 on the surface of the backlight frame 3. In this way, the overall thickness of the backlight module can be increased by increasing the height of the boss 4, while eliminating the need for mold design, thus effectively reducing production costs.

[0043] Meanwhile, since the boss 4 is stamped on the contact surface of the conventional backlight iron frame 3, there is no need to re-open the mold, resulting in lower cost, easier operation, and greater practicality.

[0044] To enable those skilled in the art to better understand the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings.

[0045] It should be noted that, unless otherwise specified, the embodiments and features and technical solutions in the present invention can be combined with each other.

[0046] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0047] Example 1

[0048] Please refer to Figures 1-5 As shown, a thickened structure for a backlight module includes:

[0049] The backlight frame 1 has a backlight cavity 11 at its bottom for inserting and assembling the light guide assembly 2;

[0050] The backlight iron frame 3 is fastened to the side wall at the bottom of the backlight rubber frame 1 to enclose the backlight cavity 11;

[0051] A boss 4 is formed on the surface of the backlight iron frame 3 in the direction of the backlight cavity 11 and abuts against the back of the light guide assembly 2 for support. A heightening gap 43 is formed between the top and bottom of the boss 4 to increase the overall thickness of the backlight module.

[0052] In this embodiment, the boss 4 is formed by stamping on a conventional backlight iron frame 3 with a flat bottom wall. In this way, the boss 4 and the backlight iron frame 3 are integrated, so no additional connection operation is required. Moreover, the integrated design can effectively ensure the connection strength between the boss 4 and the backlight iron frame 3.

[0053] Since the boss 4 is positioned towards the light guide component 2, the light guide component 2 will not directly contact the inner wall of the backlight frame 3, but will instead contact the boss 4. Therefore, the height of the boss 4 is the thickness that needs to be increased for the entire backlight module in this embodiment, so that the increased module requirements can be met without redesigning and re-molding the backlight frame 1 and the light guide component 2.

[0054] Example 2

[0055] The thickened structure of the backlight module provided in Embodiment 1 is further optimized, specifically, as follows: Figure 4 As shown, a TFT liquid crystal display component 5 is embedded in the top of the backlight frame 1. The backlight cavity 11 illuminates the TFT liquid crystal display component 5 through the light transmission groove 12. When the light guide component 2 in the backlight cavity 11 is working, the light source generated by it will be input to the surface of the TFT liquid crystal 5 through the light transmission groove 12, thereby illuminating the TFT liquid crystal 5 for displaying the image.

[0056] Furthermore, such as Figure 2 As shown, the protrusion 4 avoids the effective display area 51 of the TFT liquid crystal display component 5, that is, the protrusion 4 is located outside the effective display area 51 in the vertical direction;

[0057] In this embodiment, when designing the boss 4, it is necessary to avoid it from outside the effective display area 51 of the TFT liquid crystal display component 5. The purpose of this design is as follows:

[0058] 1. Since the boss 4 is designed as the support contact point with the light guide component 2 in this embodiment, it will directly contact the light guide plate 22 inside the light guide 2. If the boss 4 is located in the effective display area 51, the top surface of the boss 4 after contact may squeeze the light guide plate 22, which will cause damage to the total internal reflection structure inside the light guide plate 22, resulting in abnormal light escaping at the contact point, forming bright spots / dark spots that are visible to the naked eye, thus affecting the uniformity of the display.

[0059] 2. At the same time, since the effective display area 51 is located in the center of the TFT liquid crystal display component 5, the boss 4 is designed outside the effective display area 51. This allows the boss 4 to be designed closer to the edge of the backlight iron frame 3. In this way, the support at the edge can provide more effective support and stability compared to the support at the center.

[0060] However, it should be noted that if the area outside the effective display area 51 is insufficient for the assembly of the boss 4 when designing the boss 4 in a special backlight module, then a certain area of ​​the effective display area 51 can be occupied to meet the support requirements of the boss 4. This embodiment does not impose a unique limitation.

[0061] Furthermore, there are four protrusions 4, which are distributed at the four corners of the inner side of the backlight iron frame 3. The distribution of protrusions 4 at the four corners can simultaneously form support for the light guides 2 in four directions, thereby improving the overall support stability.

[0062] like Figure 2 As shown, the TFT liquid crystal display component 5 is a non-display area 52 except for the effective display area 51. The effective display area 51 corresponds to the light transmission groove 12. Since the light guide component 2 can only light up the TFT liquid crystal display component 5 through the light transmission groove 12, the TFT liquid crystal display component 5 located outside the light transmission groove 12 is the non-display area of ​​the image.

[0063] The boss 4 is set on the backlight iron frame 3 on the outside of the light transmission groove 12, that is, the boss 4 is set on the outside of the light transmission groove 12 at a vertical height.

[0064] Example 3

[0065] The thickened structure of the backlight module provided in Embodiment 1 or 2 is further optimized, such as... Figure 5 As shown, the boss 4 includes a support part 41 and a heightening part 42. The heightening part 42 is provided on both sides of the support part 41 for connecting with the backlight iron frame 3.

[0066] The top surface of the heightening part 42 is flat and is parallel to the bottom of the light guide component 2;

[0067] Compared with conventional backlight iron frames, the backlight iron frame 3 with protrusions 4 in this embodiment only uses protrusions 4 to contact the light guide component 2. Therefore, compared with conventional backlight iron frames where the entire surface can contact the light guide component 2, the effective contact area is reduced, and the force on a single protrusion 4 will also increase.

[0068] Therefore, in this embodiment, the conventional boss 4 is designed to be close to a "trapezoidal" structure. In this way, the large stress on the support part 41 can be decomposed by the increased part 42 of the inclined surface. This can convert the shear force into pressure, realize the dispersion of the force at the root, and distribute the stress on the entire backlight iron frame 3, thus avoiding the problem of excessive stress concentration, and thus ensuring the overall support strength of the backlight iron frame 3.

[0069] Furthermore, the flatness of the top of the boss 4 is within 0.05 mm, which can avoid affecting the light guiding uniformity of the light guide assembly due to excessive warping.

[0070] Example 4

[0071] The thickened structure of the backlight module provided in Embodiment 3 is further optimized, such as... Figure 4 The light guide assembly 2 shown includes a light enhancement module 21, a light guide plate 22 and a reflective film 23 stacked on top of each other, with the light enhancement module 21 being disposed in close contact with the light transmission groove 12;

[0072] The top of the protrusion 4 abuts against the surface of the reflective film 23 to support the light guide assembly 2. The reflective film 23 is pasted on the surface of the light guide plate 22, so it can form a stable attachment state on the surface of the light guide plate 22 without external support. Through the function of the reflective film 23, the light source of the light guide plate 22 can be generated and concentrated in the light transmission groove 12 for reflection, thus avoiding the loss of the light source.

[0073] The light guide assembly 2 also includes an LED light source 24 disposed on one side of the light guide plate 22. An LED FPC 25 is connected to the LED light source 24. When the LED light source 24 is lit, it can illuminate the light guide plate 22.

[0074] In this utility model, unless otherwise explicitly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise explicitly limited. Those skilled in the art can understand the specific meaning of the above terms in this utility model according to the specific circumstances.

[0075] Obviously, the embodiments described above are only some embodiments of this utility model, not all embodiments. The accompanying drawings show preferred embodiments of this utility model, but do not limit the patent scope of this utility model. This utility model can be implemented in many different forms; rather, the purpose of providing these embodiments is to provide a more thorough and comprehensive understanding of the disclosure of this utility model. Although this utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing specific embodiments, or make equivalent substitutions for some of the technical features. Any equivalent structures made using the content of this utility model specification and drawings, directly or indirectly applied to other related technical fields, are similarly within the patent protection scope of this utility model.

Claims

1. A thickened structure for a backlight module, characterized in that, It includes: A backlight frame (1) has a backlight cavity (11) at its bottom for inserting and assembling the light guide assembly (2); The backlight iron frame (3) forms a fastening at the side wall at the bottom of the backlight rubber frame (1) to enclose the backlight cavity (11); A boss (4) is formed on the surface of the backlight frame (3) in the direction of the backlight cavity (11) and abuts against the back of the light guide assembly (2) for support. A heightening gap (43) is formed between the top and bottom of the boss (4) to increase the overall thickness of the backlight module. The top of the backlight frame (1) is embedded with a TFT liquid crystal display component (5), and the backlight cavity (11) illuminates the TFT liquid crystal display component (5) through the light transmission groove (12); The protrusion (4) avoids the effective display area (51) of the TFT liquid crystal display component (5); The boss (4) includes a support part (41) and a heightening part (42). The heightening part (42) is provided on both sides of the support part (41) for connecting with the backlight iron frame (3). The top surface of the heightening part (42) is flat and is parallel to the bottom of the light guide assembly (2); The light guide assembly (2) includes a light enhancement module (21), a light guide plate (22), and a reflective film (23) stacked on top of each other. The light enhancement module (21) is disposed in close contact with the light transmission groove (12). The top of the boss (4) abuts against the surface of the reflective film (23) to provide support for the light guide assembly (2).

2. The thickened structure of the backlight module according to claim 1, characterized in that, The boss (4) has four protrusions, which are distributed at the four corners of the inner side of the backlight iron frame (3).

3. The thickened structure of the backlight module according to claim 1, characterized in that, The flatness of the top of the boss (4) is within 0.05 mm.

4. The thickened structure of the backlight module according to claim 2, characterized in that, The TFT liquid crystal display component (5) is a non-display area (52) except for the effective display area (51), and the effective display area (51) corresponds to the light-transmitting groove (12).

5. The thickened structure of the backlight module according to claim 2, characterized in that, The boss (4) is set on the backlight iron frame (3) on the outside of the light-transmitting groove (12).

6. The thickened structure of the backlight module according to claim 1, characterized in that, The light guide assembly (2) also includes an LED light source (24) disposed on one side of the light guide plate (22), and an LED FPC (25) is connected to the LED light source (24).

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