Backlight module, display module and display equipment
By connecting the matching part of the light guide plate and the optical diaphragm set to the limit part, the problem of easy damage to the film material during the rework of the display module is solved, and the cost reduction and scrap rate are achieved, ensuring the secondary use of the optical diaphragm set .
Patent Information
- Application Number
- CN202323666203.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2023-12-29
- Publication Date
- 2025-01-10
- Estimated Expiration
- 2033-12-29
AI Technical Summary
The film material in the backlight module of the existing display module is prone to damage during the re-repair process, resulting in a high scrap rate and increasing production costs.
The light guide plate and the optical diaphragm set are fixed by the cooperation of multiple mating parts and the limiting parts instead of the light shielding glue to ensure the stable connection between the optical diaphragm set and the light guide plate, avoid damage and allow secondary use.
It reduces production costs, reduces the scrap rate of the backlight module, realizes the secondary use of the optical diaphragm set, and improves the repair efficiency of the display module.
Smart Images
Figure CN222337425U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of backlight modules, and in particular to a backlight module, a display module and a display device. Background Art
[0002] With the development of the times, the market has higher and higher requirements for display modules, and the prices of various display screens on the market have become more and more transparent. Cost reduction has become an important way for manufacturers to improve their competitive advantage. At present, the film material in the backlight module used for the backlight of the display module is generally fixed by a light-shielding adhesive. In this way, during the repair process of the display module, the light-shielding adhesive is removed, which causes waste and easily damages the film material, and it cannot be used again, resulting in a high scrap rate of the backlight module, which greatly increases the production cost. Utility Model Content
[0003] The main purpose of the utility model is to provide a backlight module, a display module and a display device, aiming to solve the problem that the film material in the backlight module is easily damaged when the display module is repaired.
[0004] To achieve the above object, the utility model provides a backlight module, comprising:
[0005] A light guide plate having two end surfaces arranged opposite to each other along a thickness direction thereof, wherein one of the end surfaces is arranged as a light emitting surface, and the light emitting surface is formed with a plurality of stoppers spaced apart along a circumferential direction thereof; and
[0006] The optical film group is arranged on the light emitting surface, and the optical film group is correspondingly provided with a plurality of matching parts, and the plurality of matching parts cooperate with the plurality of limiting parts to relatively fix the optical film group and the light guide plate.
[0007] Optionally, the limiting portion includes a limiting convex portion protruding from the light emitting surface, the matching portion includes a matching hole penetrating the optical film group, the limiting convex portion is penetrated in the matching hole, and an end portion thereof extends out of the matching hole.
[0008] Optionally, the optical film group includes a stacked diffusion film, a first brightness enhancement film and a second brightness enhancement film, the diffusion film is attached to the light emitting surface, and the matching holes include a first penetration hole through the diffusion film, a second penetration hole through the first brightness enhancement film and a third penetration hole through the second brightness enhancement film.
[0009] Optionally, the matching hole is located at the periphery of the optical film group and is arranged through the side end of the optical film group.
[0010] Optionally, the other end surface of the light guide plate is set as a bottom surface, and the bottom surface is provided with a reflective film.
[0011] Optionally, the backlight module further comprises a back plate located on a side of the light guide plate facing away from the optical film set, and a side of the back plate facing the light guide plate is concavely provided with a receiving groove for accommodating the light guide plate and the optical film set.
[0012] Optionally, the light guide plate has a light incident surface extending along a thickness direction thereof;
[0013] The backlight module further includes a backlight source, which is arranged corresponding to the light incident surface and has a light emitting surface facing the light incident surface.
[0014] Optionally, a recessed area is formed on the light incident surface, and the recessed area is used to accommodate lamp beads of the backlight source.
[0015] The utility model further provides a display module, wherein the display module includes the backlight module, and the backlight module includes:
[0016] A light guide plate having two end surfaces arranged opposite to each other along a thickness direction thereof, wherein one of the end surfaces is arranged as a light emitting surface, and the light emitting surface is formed with a plurality of stoppers spaced apart along a circumferential direction thereof; and
[0017] The optical film group is arranged on the light emitting surface, and the optical film group is correspondingly provided with a plurality of matching parts, and the plurality of matching parts cooperate with the plurality of limiting parts to relatively fix the optical film group and the light guide plate.
[0018] In addition, the utility model also provides a display device, the display device includes a display module, the display module includes:
[0019] A light guide plate having two end surfaces arranged opposite to each other along a thickness direction thereof, wherein one of the end surfaces is arranged as a light emitting surface, and the light emitting surface is formed with a plurality of stoppers spaced apart along a circumferential direction thereof; and
[0020] The optical film group is arranged on the light emitting surface, and the optical film group is correspondingly provided with a plurality of matching parts, and the plurality of matching parts cooperate with the plurality of limiting parts to relatively fix the optical film group and the light guide plate.
[0021] In the technical solution of the utility model, the backlight module includes a light guide plate and an optical film group, the light guide plate has two end faces arranged oppositely along the thickness direction thereof, and one of the end faces is arranged as a light emitting surface, and the light emitting surface is formed with a plurality of limiting parts spaced along its circumference; the optical film group is arranged on the light emitting surface, and the optical film group is correspondingly provided with a plurality of matching parts, and the plurality of matching parts cooperate with the plurality of limiting parts to fix the optical film group and the light guide plate relatively. Through the cooperation of the plurality of matching parts and the plurality of limiting parts, the light shielding glue can be replaced to fix the optical film group and the light guide plate relatively, which can save the cost of the light shielding glue on the one hand, and on the other hand, when the display module is repaired, the optical film group will not be damaged, so that the optical film group can be used twice, reducing the scrap rate, and thus greatly reducing the cost. BRIEF DESCRIPTION OF THE DRAWINGS
[0022] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.
[0023] Figure 1 A schematic structural diagram of an embodiment of a backlight module provided by the utility model;
[0024] Figure 2 for Figure 1 A schematic diagram of the structure of the middle light guide plate;
[0025] Figure 3 for Figure 1 Schematic diagram of the structure of the diffusion membrane;
[0026] Figure 4 for Figure 1 A schematic diagram of the structure of the first brightness enhancement film;
[0027] Figure 5 for Figure 1 A schematic diagram of the structure of the second brightness enhancement film;
[0028] Figure 6 for Figure 1 Schematic diagram of the assembly of the light guide plate and the backlight source.
[0029] Description of Figure Numbers:
[0030]
[0031]
[0032] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION
[0033] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.
[0034] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back...), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.
[0035] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the utility model, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In addition, the meaning of "and / or" appearing in the full text includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the utility model.
[0036] With the development of the times, the market has higher and higher requirements for display modules, and the prices of various display screens on the market have become more and more transparent. Cost reduction has become an important way for manufacturers to improve their competitive advantage. At present, the film material in the backlight module used for the backlight of the display module is generally fixed by a light-shielding adhesive. In this way, during the repair process of the display module, the light-shielding adhesive is removed, which causes waste and easily damages the film material, and it cannot be used again, resulting in a high scrap rate of the backlight module, which greatly increases the production cost.
[0037] In view of this, the utility model proposes a backlight module, which can replace the light-shielding glue to fix the optical film group and the light guide plate relatively through the cooperation of multiple matching parts and multiple limiting parts. On the one hand, the cost of light-shielding glue can be saved, and on the other hand, when the display module is repaired, the optical film group will not be damaged, so that the optical film group can be used again, reducing the scrap rate, thus greatly reducing the cost. Figures 1 to 6 FIG. 1 is an embodiment of the backlight module proposed by the present invention.
[0038] like Figures 1 to 5 As shown, the backlight module 100 proposed in the utility model includes a light guide plate 1 and an optical film group 2, the light guide plate 1 has two end faces arranged opposite to each other along its thickness direction, and one of the end faces is arranged as a light emitting surface 11, and the light emitting surface 11 is formed with a plurality of limiting portions 111 spaced along its circumferential direction; the optical film group 2 is arranged on the light emitting surface 11, and the optical film group 2 is correspondingly provided with a plurality of matching portions 2a, and the plurality of matching portions 2a cooperate with the plurality of limiting portions 111 to relatively fix the optical film group 2 and the light guide plate 1.
[0039] In the technical solution of the utility model, the backlight module 100 includes a light guide plate 1 and an optical film group 2. The light guide plate 1 has two end faces arranged oppositely along its thickness direction, and one of the end faces is arranged as a light emitting surface 11. The light emitting surface 11 is formed with a plurality of stopper portions 111 spaced along its circumference. The optical film group 2 is arranged on the light emitting surface 11. The optical film group 2 is provided with a plurality of matching portions 2a correspondingly. The plurality of matching portions 2a cooperate with the plurality of stopper portions 111 to fix the optical film group 2 relatively to the light guide plate 1. Through the cooperation of the plurality of matching portions 2a and the plurality of stopper portions 111, the optical film group 2 can be replaced with the light shielding glue to fix the optical film group 2 relatively to the light guide plate 1. On the one hand, the cost of the light shielding glue can be saved. On the other hand, when the display module is repaired, the optical film group 2 will not be damaged, so that the optical film group 2 can be used twice, reducing the scrap rate. In this way, the cost can be greatly reduced.
[0040] In this embodiment, if Figures 1 to 5 As shown, the limiting portion 111 includes a limiting convex portion 111a protruding from the light emitting surface 11, and the matching portion 2a includes a matching hole 2b penetrating the optical film group 2. The limiting convex portion 111a is penetrated in the matching hole 2b, and its end extends out of the matching hole 2b. When the optical film group 2 and the light guide plate 1 are installed, the limiting convex portion 111a is matched with the matching hole 2b to make the optical film group 2 and the light guide plate 1 relatively fixed. In this way, the light shielding glue can be omitted to reduce the production cost. At the same time, when the display module is repaired, the optical film group 2 is not easily damaged, so that it is convenient for secondary use and the scrap rate is reduced.
[0041] Specifically, in this embodiment, Figures 3 to 5 As shown, the optical film set 2 includes a diffusion film 21, a first brightness enhancement film 22, and a second brightness enhancement film 23 which are stacked, the diffusion film 21 is attached to the light emitting surface 11, and the matching hole 2b includes a first perforated hole 211 penetrating the diffusion film 21, a second perforated hole 221 penetrating the first brightness enhancement film 22, and a third perforated hole 231 penetrating the second brightness enhancement film 23. In this way, during the assembly process of the backlight module 100, the limiting protrusion 111a sequentially penetrates the first perforated hole 211, the second perforated hole 221, and the third perforated hole 231 to fix the diffusion film 21, the first brightness enhancement film 22, and the second brightness enhancement film 23 to the light guide plate 1, respectively.
[0042] In this embodiment, if Figures 3 to 5 As shown, the matching hole 2b is located at the periphery of the optical film set 2 and is set through the side end of the optical film set 2. In this way, when the optical film set 2 is assembled with the light guide plate 1, each of the limiting portions 111 is easier to match with the corresponding matching hole 2b, reducing the difficulty of installation.
[0043] In this embodiment, if Figure 1 As shown, the other end surface of the light guide plate 1 is set as the bottom surface, and the bottom surface is provided with a reflective film 3. In this way, the light emitted by the backlight source 4 is combined by the reflective sheet, the light guide plate 1, the diffusion film 21, the first brightness enhancement film 22 and the second brightness enhancement film 23, so that the backlight module 100 emits light uniformly to ensure the visual effect of the display module.
[0044] In this embodiment, the backlight module 100 further includes a back plate located on the side of the light guide plate 1 facing away from the optical film set 2, and a recessed groove is formed on the side of the back plate facing the light guide plate 1 to accommodate the light guide plate 1 and the optical film set 2. The back plate is provided to protect the light guide plate 1 and the optical film set 2.
[0045] In this embodiment, if Figure 1 and Figure 6 As shown, the light guide plate 1 has a light incident surface 12 extending along the thickness direction thereof; the backlight module 100 further includes a backlight source 4, which is arranged corresponding to the light incident surface 12, and its light emitting surface faces the light incident surface 12. Thus, the backlight module 100 adopts a side-entry backlight solution, so that the overall structure of the backlight module 100 is more compact, meeting the requirements of a light and thin design of the backlight module 100.
[0046] In this embodiment, if Figure 2 and Figure 6 As shown, the light incident surface 12 is formed with a recessed area 121, and the recessed area 121 is used to accommodate the lamp beads of the backlight source 4. In this way, the light incident surface 12 can fully cover the light emitting area of the backlight source 4, thereby improving light utilization efficiency.
[0047] The utility model also provides a display module, the display module includes the backlight module, the specific structure of the backlight module, with reference to the above embodiment, the specific structure of the backlight module is as follows Figure 1 As shown, it can be understood that since the display module of the utility model adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.
[0048] In addition, the utility model also provides a display device, the display device includes a display module, the specific structure of the display module, with reference to the above embodiment, the specific structure of the display module is as follows: Figure 1 As shown, it can be understood that since the display device of the utility model adopts all the technical solutions of all the above embodiments, it at least has all the beneficial effects brought by the technical solutions of the above embodiments, which will not be described one by one here.
[0049] The above description is only a preferred embodiment of the utility model, and does not limit the patent scope of the utility model. All equivalent structural changes made by using the contents of the utility model specification and drawings under the concept of the utility model, or directly / indirectly used in other related technical fields are included in the patent protection scope of the utility model.
Claims
1. A backlight module, characterized in that: include: A light guide plate having two end surfaces arranged opposite to each other along a thickness direction thereof, wherein one of the end surfaces is arranged as a light emitting surface, and the light emitting surface is formed with a plurality of stoppers spaced apart along a circumferential direction thereof; and The optical film group is arranged on the light emitting surface, and the optical film group is correspondingly provided with a plurality of matching parts, and the plurality of matching parts cooperate with the plurality of limiting parts to relatively fix the optical film group and the light guide plate.
2. The backlight module according to claim 1, characterized in that: The limiting portion includes a limiting convex portion protruding from the light emitting surface, the matching portion includes a matching hole penetrating the optical film group, the limiting convex portion is penetrated in the matching hole, and an end portion thereof extends out of the matching hole.
3. The backlight module according to claim 2, characterized in that: The optical film group includes a stacked diffusion film, a first brightness enhancement film and a second brightness enhancement film, the diffusion film is attached to the light emitting surface, and the matching holes include a first penetration hole penetrating the diffusion film, a second penetration hole penetrating the first brightness enhancement film and a third penetration hole penetrating the second brightness enhancement film.
4. The backlight module according to claim 2 or 3, characterized in that: The matching hole is located at the periphery of the optical film group and is arranged through the side end of the optical film group.
5. The backlight module according to claim 1, wherein: The other end surface of the light guide plate is arranged as a bottom surface, and the bottom surface is provided with a reflective film.
6. The backlight module according to claim 1, wherein: The backlight module further comprises a back plate located on a side of the light guide plate facing away from the optical film set, and a receiving groove is concavely formed on a side of the back plate facing the light guide plate for accommodating the light guide plate and the optical film set.
7. The backlight module according to claim 1, wherein: The light guide plate has a light incident surface extending along the thickness direction thereof; The backlight module further includes a backlight source, which is arranged corresponding to the light incident surface and has a light emitting surface facing the light incident surface.
8. The backlight module according to claim 7, characterized in that: The light incident surface is formed with a recessed area, and the recessed area is used to accommodate the lamp beads of the backlight source.
9. A display module, characterized in that: Comprising the backlight module as described in any one of claims 1-8.
10. A display device, characterized in that: Comprising the display module as claimed in claim 9.