Backlight module and display device

Abstract

The present invention relates to a backlight module and a display device. The backlight module primarily comprises: a support structure disposed on a substrate and having at least one positioning portion extending to the top surface of at least one light source in the light source assembly; and an optical film having a retaining hole corresponding to the positioning portion. The support structure simultaneously achieves a thinner backlight module and a fixed structure design, reducing the problem of poor component matching associated with traditional multi-component designs, increasing product production yield, and reducing costs.

Description

Technical Field

[0001] The present invention relates to a display technology, in particular to a backlight module and a display device. Background Art

[0002] The current design trend of display devices is evolving from bulky and heavy to thinner and lighter designs. Furthermore, the width of the bezels of display devices is gradually trending towards a narrow bezel design, which reduces the overall size of the display devices and allows for a larger display area for the same size display device, resulting in a better visual effect.

[0003] Due to the trend of narrowing the frame of display devices, conventional narrow-frame display devices must overcome the problem of fixing the optical film in the backlight module or the panel in the display device. In addition to being used to support the panel, the back plate or plastic frame of the conventional backlight module is also provided with at least one protrusion for the ear on the optical film to be attached. However, the back plate or plastic frame of the conventional backlight module must have a certain thickness to set the protrusion for positioning the ear of the optical film. In other words, the narrow frame limit of the conventional backlight module lies in the protrusion of the back plate or plastic frame. In addition, the ear of the optical film is also easily broken by stress, and the yield rate of the overall backlight module is also poor.

[0004] To meet the demand for thinner display devices, conventional backlight modules typically feature a U-shaped bend on at least one side of the backplane. The interior of this U-bend accommodates the light bar, while the bottom surface of the U-bend supports the light guide plate, while the top surface on the opposite side supports the panel. This prevents the thickness of conventional backlight modules from being reduced. Furthermore, a reflective sheet is placed above the light bar to block light leakage. Due to the limited assembly space within the U-bend, the reflective sheet is difficult to assemble and attach. Positioning is challenging, assembly time is lengthy, and subsequent repairs are difficult.

[0005] In summary, conventional narrow-frame display devices have the following deficiencies: 1. They require the use of more parts and materials for assembly to achieve the fixing effect of the mechanical design. For example, the aforementioned reflective sheet located above the light bar needs to be attached to the inner side of the U-shaped bend of the back panel with a double-sided tape, and another double-sided tape is attached to the light guide plate; 2. The back panel is usually stamped with metal parts, and the process of its U-shaped bend is prone to burrs and foreign matter residues. A cleaning process is required before assembly, resulting in a long assembly time; 3. The material cost of the back panel is high, and the assembly of the internal components of the U-shaped bend is not easy to rework, resulting in a high cost of the overall backlight module; 4. The aforementioned reflective sheet located above the light bar needs to be attached to the inner side of the U-shaped bend of the back panel with a double-sided tape, and another double-sided tape is attached to the light guide plate. The assembly operation is complicated and the assembly time is long. These deficiencies make the overall backlight module thick and costly. Summary of the Invention

[0006] The purpose of the present invention is to provide a new design structure of a backlight module, which utilizes a supporting structure to achieve the effect of thinning the backlight module and narrowing the frame, and can also simultaneously fix multiple parts, simplify the assembly process and shorten the working time.

[0007] Another object of the present invention is to provide a new design structure for a backlight module, which improves the yield rate of component matching, simplifies the assembly or rework process, and can reduce the overall component cost or the material rework cost caused by poor assembly.

[0008] In order to achieve the above-mentioned purpose, the present invention provides a backlight module, which includes: a base plate and at least one side wall, wherein a space is formed between the side wall and the base plate; a light guide plate, which has a light incident surface and a light output surface connected to the light incident surface, and the light guide plate is arranged on the base plate; a light source assembly, which includes a substrate and a plurality of light sources, and the light sources are arranged on the substrate, and the light sources are adjacent to the light incident surface of the light guide plate; a supporting structure, which is arranged on the substrate, and the supporting structure has at least one positioning portion, and the positioning portion extends to the top surface of at least one light source in the light source assembly; and at least one optical film, which is provided with a limiting hole corresponding to the positioning portion.

[0009] As a preferred embodiment, the thickness of the positioning portion is equal to or greater than the depth of the limiting hole. More preferably, the positioning portion spans above the light source, and both ends of the positioning portion each have an auxiliary support portion extending downward.

[0010] Preferably, the support structure includes a main body and a plurality of extensions, wherein the extensions extend from the main body to between any two adjacent light sources in the light source assembly, and the end surfaces of the extensions of the support structure contact the light incident surface of the light guide plate.

[0011] As a preferred embodiment, the main body of the support structure is fixed to the substrate by a first adhesive member, and the first adhesive member has multiple extension sections and multiple bending sections, wherein the extension sections correspond to the extension sections of the support structure, the extension sections are located between the extension sections and the substrate, the bending sections are respectively connected one-to-one with the extension sections, and the bending sections extend between the light guide plate and the end faces of the extension sections.

[0012] Preferably, there are multiple optical films, with the optical film closest to the light source being a reflective sheet. This reflective sheet has a coupling portion that extends behind the light sources. The support structure includes a main body. The coupling portion of the reflective sheet is secured to the top surface of the main body of the support structure via a second adhesive member. This second adhesive member forms a groove relative to the positioning portion of the support structure. More preferably, the other optical films positioned above the reflective sheet also have retaining holes corresponding to the positioning portions.

[0013] In order to achieve the above-mentioned purpose, the present invention further provides a backlight module, comprising: a base plate and at least one side wall, a space being formed between the side wall and the base plate; a light guide plate having a light incident surface and a light exit surface connected to the light incident surface, the light guide plate being arranged on the base plate; a light source assembly comprising a substrate and a plurality of light sources, the light sources being arranged on the substrate, and the light sources being arranged adjacent to the light incident surface of the light guide plate; a supporting structure being arranged on the substrate, and the supporting structure having at least one stepped portion, the stepped portion being located between the light sources and the side wall; and at least one optical film having a positioning portion corresponding to the stepped portion.

[0014] As a preferred embodiment, the stepped portion includes a plurality of bonding portions, the number of the optical films is multiple, and the positioning portions of the optical films correspond to the bonding portions respectively. More preferably, the stepped portion includes a first bonding portion and a second bonding portion, the second bonding portion being higher than the first bonding portion, the optical films include a first optical film, a second optical film, and a third optical film, the first optical film having a first positioning portion, the first positioning portion corresponding to the first bonding portion and the second bonding portion of the stepped portion to position the first optical film, the second optical film having a second positioning portion, the second positioning portion being smaller than the first positioning portion, and the second positioning portion corresponding to the second bonding portion of the stepped portion to position the second optical film, the second optical film being fixedly bonded to the first bonding portion, and the third optical film being fixedly bonded to the second bonding portion.

[0015] Another object of the present invention is to provide a display device that utilizes a new backlight module design architecture to achieve the effects of thinning the backlight module and narrowing the frame through a supporting structure. It can also ensure the fixing effect of multiple components, reduce the problem of poor component matching derived from traditional multi-component designs, and simplify the assembly process, which can reduce the cost of reworking materials caused by poor assembly.

[0016] To achieve the above objectives, the present invention provides a display device, which comprises: the aforementioned backlight module, and a display panel disposed adjacent to the light emitting surface of the light guide plate in the backlight module.

[0017] As a preferred embodiment, the positioning portion in the backlight module is at the same height as the side wall to support the display panel. More preferably, the positioning portion or stepped portion in the backlight module is at the same height as the side wall to support the display panel.

[0018] Compared with the prior art, the present invention has the following features: a novel design structure for the backlight module, utilizing a support structure and its positioning portion extending to the top surface of at least one light source in the light source assembly, or a stepped portion located between these light sources and the side wall, thereby simultaneously achieving the effects of thinning the backlight module and narrowing the frame, and also ensuring the fixing effect of multiple components, reducing the problem of poor component matching derived from traditional multi-component designs, improving the component matching yield, shortening assembly or rework time, increasing product production yield, and reducing costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 FIG. 1 is a partial explosion diagram of the backlight module according to an embodiment of the present invention.

[0020] Figure 2 for Figure 1 A schematic diagram of the partial cross-section of the embodiment after assembly along line A-A.

[0021] Figure 3 for Figure 1 A schematic cross-sectional view of the B-B portion of the assembled embodiment.

[0022] Figure 4 This is an exploded diagram of the light source assembly and supporting structure of this case.

[0023] Figure 5 This is a schematic diagram of the partial combination of the light source component and the supporting structure in this case.

[0024] Figure 6 Schematic diagram of the combination of the optical film and the supporting structure in this case.

[0025] Figure 7 This is another schematic diagram of the support structure of this case.

[0026] Figure 8 FIG. 1 is a partial schematic diagram of a display device in an embodiment of the present invention. DETAILED DESCRIPTION

[0027] The embodiments of the present invention will now be described in detail with reference to the accompanying drawings. The accompanying drawings are primarily simplified schematic diagrams that illustrate the basic structure of the present invention in a schematic manner. Therefore, only components relevant to the present invention are indicated in these drawings, and the components shown are not drawn in accordance with the number, shape, size ratio, etc. of the components used in actual implementation. The specifications and dimensions of the components used in actual implementation are actually a matter of optional design, and the component layout may be more complex.

[0028] The following descriptions of the various embodiments are made with reference to the accompanying drawings to illustrate specific embodiments in which the present invention may be implemented. Directional terms used herein, such as "upper," "lower," "front," and "rear," are merely references to the directions in the accompanying drawings. Therefore, the directional terms used are intended to illustrate and understand the present application, not to limit the present application. Furthermore, in the specification, unless expressly stated to the contrary, the word "comprising" will be understood to mean including the stated elements but not excluding any other elements.

[0029] Please refer to Figure 1 、 Figure 2 and Figure 3 , which is a partial exploded schematic diagram and partial assembled cross-sectional view of a preferred embodiment of the backlight module of the present invention. The backlight module 100 comprises: a bottom plate 110 and at least one side wall 120. A space 130 is formed between the side wall 120 and the bottom plate 110. The space 130 is used to accommodate the components constituting the backlight module 100.

[0030] The light guide plate 200 has a light incident surface 210 and a light emitting surface 220 connected to the light incident surface 210 . The light guide plate 200 is disposed on the bottom plate 110 .

[0031] The light source assembly 300 includes a substrate 310 and a plurality of light sources 320. The light sources 320 may be light-emitting diodes (LEDs). The light sources 320 are spaced apart on the substrate 310 and are adjacent to the light incident surface 210 of the light guide plate 200. Figure 2 As shown, the light source 320 is located between the light guide plate 200 and the side wall 120 .

[0032] In one embodiment, the light source assembly 300 is a flexible printed circuit board (FPC). The edge of the FPC extends between the light guide plate 200 and the base plate 110. The FPC is attached to the base plate 110 using adhesive (not shown). A reflector sheet 230 is further disposed between the light guide plate 200 and the base plate 110 to reflect light within the light guide plate 200 toward the light-emitting surface 220. The adhesive used to attach the FPC also extends underneath the reflector sheet 230, simultaneously attaching the reflector sheet 230 to the base plate 110. This reduces the number of adhesives, material costs, and assembly time.

[0033] The support structure 400 includes a main body 410 and at least one positioning portion 420, wherein the main body 410 is disposed on the substrate 310 and is located behind the light source 320 relative to the light guide plate 200. The thickness of the main body 410 is preferably at least the same as the height of the light source 320. The positioning portion 420 extends from the main body 410 to the top surface of the light source 320 (e.g., Figure 2 As shown), the positioning portion 420 is used to position at least one optical film 500. In one embodiment, the positioning portion 420 spans above the light source 320, and each end of the positioning portion 420 has an auxiliary support portion 421 extending downward. The auxiliary support portion 421 is located between two adjacent light sources 320 and abuts against the substrate 310 (as shown). Figure 3 ), increasing the support strength of the positioning portion 420 so that when other backlight module components or display panels are stacked, the pressure exerted on the light source 320 by these components or display panels can be dispersed, allowing the backlight module 100 to more stably support the display panels. Preferably, the auxiliary support portion 421 is fixed to the substrate 310 with an adhesive.

[0034] Furthermore, the positioning portion 410 of the support structure 400 above the light source 320 is used to position the optical film 500 without occupying the thickness of the back plate or the plastic frame, thereby achieving the effect of narrowing the backlight module 100 and fixing multiple parts.

[0035] In one implementation, the optical film 500 includes a limiting hole 510. For example, the limiting hole 510 is a through hole, and the positioning portion 420 of the support structure 400 is a convex column. The thickness of the positioning portion 420 is preferably equal to or greater than the depth of the limiting hole 510 of the optical film 500 to be used. This ensures that the optical film 500 is not easy to fall out when hung on the positioning portion 420, thereby realizing the positioning configuration of the optical film 500, which not only achieves the effect of fixing multiple parts, simplifying the assembly process and shortening working hours, but also improves the yield rate of parts matching, reduces the overall part cost or the cost of material rework caused by poor assembly.

[0036] In one implementation, the support structure 400 may further include a plurality of extensions 430 , which extend from the main body 410 to between any two adjacent light sources 320 in the light source assembly 300 , and the end surfaces 431 of the extensions 430 contact the light incident surface 210 of the light guide plate 200 .

[0037] Please refer to Figure 4 and Figure 5, which is an exploded schematic diagram and a partial schematic diagram of the light source assembly 300 and the support structure 400 of this case. In one embodiment, the main body 410 of the support structure 400 is fixed to the substrate 310 by a first adhesive member 330, and the first adhesive member 330 has a plurality of extension sections 331 and a plurality of bending sections 332. The extension sections 331 correspond to the extensions 430 of the support structure 400, and the extension sections 331 are located between the extensions 430 and the substrate 310. The bending sections 332 are preferably connected to the extension sections 331 one-to-one, and the bending sections 332 extend between the light guide plate 200 and the end faces 431 of the extensions 430 (such as Figure 4 As shown). Thus, the first adhesive member 330 can simultaneously attach and secure the support structure 400 and the light source assembly 300, and position the support structure 400 and the side of the light guide plate 200. The support structure 400 of the present invention not only positions and arranges the optical film 500, but also simultaneously secures the light guide plate 200, achieving a multi-component securing effect, thereby reducing costs and shortening work hours.

[0038] Please refer to Figure 6 , which schematically illustrates the combined relationship between the optical film 500 and the support structure 400 of this embodiment. In one embodiment, multiple optical films 500 are provided to adjust the optical requirements of the backlight module 100. For example, the optical film 500 closest to the light sources 320 is a reflective sheet 520. This reflective sheet 520 is positioned above the light sources 320 to block the wide-angle light emitted by these light sources 320, thereby ensuring the optical quality of the light guide plate 200. This reflective sheet 520 has a coupling portion 521 that extends above the support structure 400 behind the light sources 320. The coupling portion 521 of the reflective sheet 520 is secured to the top surface of the main body 410 of the support structure 400 using a second adhesive member 340. This second adhesive member 340 forms a groove 341 relative to the positioning portion 420 of the support structure 400. Of course, the reflective sheet 520 and the other optical films 500 located above it also have limiting holes 510 corresponding to the positioning portions 420. Regarding assembly and fixation, the second adhesive member 340 is provided above the support structure 400 to adhere and fix the optical film 500. The groove 341 of the second adhesive member 340 corresponds to the positioning portion 420, ensuring that when the reflective sheet 520 is positioned on the positioning portion 420 via the limiting holes 510, the reflective sheet 520 can be flatly attached to the support structure 400. The second adhesive member 340 extends along the upper side of the light source 320 toward the light guide plate 200 and is adhered and fixed to the light guide plate 200, thereby enhancing the fixation of the optical film 500, simplifying the assembly process, and reducing working hours.

[0039] Figure 7 This is another schematic diagram of a support structure 400 in this embodiment. The main body 410 of the support structure 400 may also have at least one stepped portion 440, which is also used to position the optical film 500. The stepped portion 440 is preferably located between the light sources 320 and the sidewall 120. The stepped portion 440 includes multiple bonding portions 450, each corresponding to a different optical film.

[0040] For example, a stepped portion 440 having two steps corresponds to the positioning of three optical films. The optical film closest to the light guide plate is the first optical film 530, followed by the second optical film 540 and the third optical film 550. The stepped portion 440 includes a first bonding portion 451 on the top surface of the first stepped portion 441 and a second bonding portion 452 on the top surface of the second stepped portion 442. The second bonding portion 452 is higher than the first bonding portion 451.

[0041] The first optical film 530 has a first positioning portion 531, which positions the first optical film 530 corresponding to the stepped portion 440. That is, the first positioning portion 531 of the first optical film 530 corresponds to the stepped portion 440, exposing the first bonding portion 451 and the second bonding portion 452, and the first optical film 530 is fixed to the surface of the main body 420 of the support structure 400. More preferably, the surface of the first optical film 530 is flush with the surface of the first bonding portion 451.

[0042] The second optical film 540 has a second positioning portion 541 that is smaller than the first positioning portion 531. The second positioning portion 541 positions the second optical film 540 relative to the first stepped portion 441. The second optical film 540 is affixed to the surface of the first bonding portion 451 of the first stepped portion 441. Preferably, the surface of the second optical film 540 is flush with the surface of the second bonding portion 452. Finally, the third optical film 550 is the topmost film. In practice, the retaining hole 510 may be omitted. The third optical film 550 may be directly secured to the second bonding portion 452 of the second stepped portion 442, thereby enhancing the optical quality of the display. In practice, all the films of the optical film 500 can be positioned and secured using bonding members (not shown) disposed on the surface of the main body 420 of the support structure 400, the first bonding portion 451, and the second bonding portion 452. In this way, multiple components can be secured, the yield rate of component matching can be improved, the assembly or rework process can be simplified, the assembly or rework time can be shortened, and the cost can be reduced. Preferably, the total thickness of the first optical film 530, the bonding member below it, and the bonding member above it is the same as the thickness of the first stepped portion 441, which is beneficial for the flatness of the second optical film 540 when attached. Similarly, the total thickness of the second optical film 540 and the bonding member above it is the same as the thickness of the second stepped portion 442. This not only facilitates the flatness of the third optical film 550 when attached, but also ensures that the third optical film 550 does not need to be provided with a positioning hole (i.e., the limiting hole 510) for positioning, which is beneficial for improving the optical quality of the display. In the backlight module of the present invention, the support structure 400 can be selected according to the needs to position the optical film using the positioning portion 410 or the stepped portion 440.

[0043] The backlight module 100 of this case achieves the effect of thinning the backlight module and narrowing the frame through a new design architecture and utilizing the support structure 400. It can not only fix multiple parts, simplify the assembly process and shorten the working time, but also utilize the design of the support structure to improve the yield rate of parts matching, simplify the assembly or rework process, and reduce the overall part cost or the cost of rework of materials caused by poor assembly.

[0044] Figure 8 The backlight module 100 is applied to the display device 600 and includes a display panel 700 and the backlight module 100. The display panel 700 is disposed on the light emitting surface 220 of the light guide plate 200 of the backlight module 100, that is, the display panel 700 is disposed above the backlight module 100.

[0045] In one embodiment, the height of the positioning portion 420 of the backlight module 100 is preferably the same as the height of the sidewall 120, or the height of the stepped portion 420 of the backlight module 100 is preferably the same as the height of the sidewall 120. The sidewall 120 and the support structure 400 jointly support the display panel 700 above the backlight module 100. In this way, the display device of the present invention eliminates the conventional bent portion, reducing the thickness of the bent portion, which helps to reduce the thickness of the backlight module. Moreover, the support structure 400 is used to support the display panel 700, which not only meets the requirement of narrowing the frame, but also reduces the difficulty of assembly and shortens the working time. In addition, the conventional protruding column design on the backplate or plastic frame is eliminated, and the positioning portion 410 used to fix the optical film is overlapped above the light source 320, which enables the display device of the present invention to achieve the effect of narrowing the frame.

[0046] The embodiments disclosed above are merely illustrative of the principles, features, and effects of the present invention and are not intended to limit the scope of the present invention. Any skilled artisan may modify or alter the embodiments described above without departing from the spirit and scope of the present invention. Any equivalent variations or modifications resulting from the present invention are intended to be covered by the claims.

[0047] Description of Reference Numerals

[0048] 100: Backlight module

[0049] 110: Base plate

[0050] 120: Sidewall

[0051] 130: Space

[0052] 200: Light guide plate

[0053] 210: Light incident surface

[0054] 220: light-emitting surface

[0055] 230: Reflective sheet

[0056] 300: Light source component

[0057] 310: Substrate

[0058] 320: Light Source

[0059] 330: First adhesive piece

[0060] 331: Extension

[0061] 332: Bending section

[0062] 340: Second adhesive piece

[0063] 341: Groove

[0064] 400: Support structure

[0065] 410: Ontology Department

[0066] 420: Positioning department

[0067] 421: Auxiliary support part

[0068] 430: Extension

[0069] 431: End face

[0070] 440: Stairs

[0071] 441: First step

[0072] 441: Second step

[0073] 450: Lamination

[0074] 451: First laminating section

[0075] 452: Second laminating section

[0076] 500: Optical film

[0077] 510: Limiting hole

[0078] 520: Reflective sheet

[0079] 521: Joint

[0080] 530: First optical film

[0081] 531: First positioning part

[0082] 540: Second optical film

[0083] 541: Second positioning portion

[0084] 550: Third optical film

[0085] 600: Display device

[0086] 700: Display panel.

Claims

1. A backlight module, characterized in that: Include: a bottom plate and at least one side wall, wherein a space is formed between the side wall and the bottom plate; a light guide plate having a light incident surface and a light emitting surface connected to the light incident surface, the light guide plate being disposed on the bottom plate; A light source assembly comprising a substrate and a plurality of light sources, wherein the light sources are disposed on the substrate and adjacent to the light incident surface of the light guide plate; a supporting structure disposed on the substrate, wherein the supporting structure has at least one positioning portion, the positioning portion extending to a top surface of at least one light source in the light source assembly; and at least one optical film, which is provided with a limiting hole corresponding to the positioning portion; The positioning portion spans over the light source, and both ends of the positioning portion each have an auxiliary support portion extending downward, and the auxiliary support portion is located between two adjacent light sources.

2. The backlight module according to claim 1, wherein: The thickness of the positioning portion is equal to or greater than the depth of the limiting hole.

3. The backlight module according to claim 1, wherein: The supporting structure includes a main body and a plurality of extension parts. The plurality of extension parts extend from the main body to between any two adjacent light sources in the light source assembly.

4. The backlight module according to claim 3, wherein: The end surfaces of the plurality of extension portions of the support structure are in contact with the light incident surface of the light guide plate.

5. The backlight module according to claim 3, wherein: The main body of the support structure is fixed to the substrate by a first adhesive member, and the first adhesive member has multiple extension sections and multiple bending sections, wherein the extension sections correspond to the multiple extension sections of the support structure, the extension sections are located between the extension sections and the substrate, the bending sections are respectively connected one-to-one with the extension sections, and the bending sections extend between the light guide plate and the end surfaces of the multiple extension sections.

6. The backlight module according to claim 1, wherein: There are multiple optical films, and the optical film closest to the light source is a reflective film. The reflective film has a connecting portion, and the connecting portion extends to the rear of the multiple light sources.

7. The backlight module according to claim 6, wherein: The supporting structure includes a main body. The combining portion of the reflective sheet is fixed to the top surface of the main body of the supporting structure by a second adhesive member. The second adhesive member forms a groove relative to the positioning portion of the supporting structure.

8. The backlight module according to claim 6, wherein: The other optical films located above the reflective sheet have limiting holes corresponding to the positioning portions.

9. The backlight module according to claim 6, wherein: The support structure has at least one stepped portion, and the stepped portion is located between the plurality of light sources and the side wall; and At least one optical film is provided with a positioning portion, and the positioning portion of the at least one optical film corresponds to the stepped portion.

10. The backlight module according to claim 9, wherein: The stepped portion includes a plurality of bonding portions. The number of the optical film sheets is multiple, and the positioning portions of the optical film sheets correspond to the bonding portions respectively.

11. The backlight module according to claim 9, wherein: The stepped portion includes a first bonding portion and a second bonding portion, the second bonding portion is higher than the first bonding portion, the optical film includes a first optical film, a second optical film and a third optical film, the first optical film has a first positioning portion, the first positioning portion positions the first optical film corresponding to the first bonding portion and the second bonding portion of the stepped portion, the second optical film has a second positioning portion, the second positioning portion is smaller than the first positioning portion, and the second positioning portion positions the second optical film corresponding to the second bonding portion of the stepped portion, the second optical film is fixedly combined with the first bonding portion, and the third optical film is fixedly combined with the second bonding portion.

12. A display device, characterized in that: Include: The backlight module according to any one of claims 1 to 11, and The display panel is arranged on the light emitting surface of the light guide plate.

13. The display device according to claim 12, wherein: The positioning portion in the backlight module has the same height as the side wall to support the display panel.

Images