Backplane, frame structure, backlight module and display device

Abstract

The present disclosure provides a backplane, which is used to be assembled with a middle frame to form a frame structure. The middle frame includes a bearing structure having a bearing surface for bearing a display panel. The backplane includes: a bottom plate and side walls formed by bending the edges of the bottom plate, the side walls being used to be assembled with the middle frame, and a first support structure is formed on the bottom plate, and the first support structure is used to support the bearing structure. The technical solution of the present disclosure forms a first support structure on the bottom plate. After the backplane and the middle frame are assembled, the first support structure can support the bearing structure in the middle frame, effectively avoiding stress deformation of the bearing structure, thereby improving the overall bearing stability of the bearing structure, and further ensuring the bonding strength between the display panel and the bearing structure.

Description

Technical Field

[0001] The present disclosure relates to the field of display technologies, and particularly to a backplane, a frame structure, a backlight module, and a display device. Background Art

[0002] With the development of the television industry, full-screen has gradually become a trend. A super-high screen-to-body ratio can present a wider field of view within a specific screen size, bringing a shocking visual experience to users.

[0003] The liquid crystal display panel itself does not emit light, so a backlight module is required to provide light for it. Currently, the main components of the backlight module include a frame structure, and an optical module and a light source fixed within the frame structure. The frame structure includes a backplane and a middle frame, and the middle frame includes a carrying structure for carrying the display panel. Summary of the Invention

[0004] The present disclosure provides a backplane, a frame structure, a backlight module, and a display device.

[0005] In a first aspect, the present disclosure provides a backplane, which is used to be assembled with a middle frame to form a frame structure. The middle frame includes a carrying structure having a carrying surface for carrying a display panel. The backplane includes: a bottom plate and side walls formed by bending the edges of the bottom plate. The side walls are used to be assembled with the middle frame, and a first support structure is formed on the bottom plate. The first support structure is used to support the carrying structure.

[0006] In some embodiments, the first support structure is further used to cooperate with the side of the carrying structure facing away from the carrying surface to clamp and fix the optical module configured for the display panel.

[0007] In some embodiments, the first support structure is formed by bending a partial area on the bottom plate, and the first support structure also serves as a reinforcing rib.

[0008] In some embodiments, the cross-sectional shape of the first support structure in a cross-section perpendicular to the bottom plate is in a "Ji" shape.

[0009] In some embodiments, the surface of the first support structure away from the bottom plate is a plane and the width is less than or equal to 2 mm.

[0010] In some embodiments, a second support structure is provided on the side of the carrying structure facing away from the carrying surface;

[0011] An accommodation groove is defined between the first support structure and the side wall. The accommodation groove is used to accommodate and support the second support structure.

[0012] In a second aspect, embodiments of the present disclosure provide a frame structure, including: the backplane provided in the first aspect and a middle frame assembled with the backplane.

[0013] In some embodiments, the middle frame includes a bearing structure, and the width w2 of the bearing surface on the bearing structure satisfies being greater than or equal to 0.5 mm and less than or equal to 6 mm.

[0014] In some embodiments, the middle frame further includes: a main body structure, and the bearing structure is located on the main body structure and integrally formed with the main body structure;

[0015] The main body structure is fixedly assembled with the side wall in the backplane.

[0016] In a third aspect, embodiments of the present disclosure provide a backlight module, including: the frame structure provided in the second aspect above.

[0017] In some embodiments, the backlight module further includes: an optical module;

[0018] The optical module is located between the first support structure and the bearing structure, and the first support structure cooperates with the side of the bearing structure facing away from the bearing surface to clamp and fix the optical module.

[0019] In a fourth aspect, embodiments of the present disclosure further provide a display device, including: the backlight module provided in the third aspect above and a display panel fixed on the bearing surface. Description of the Drawings

[0020] Figure 1 It is a cross-sectional schematic diagram of a display device involved in the related art;

[0021] Figure 2 It is a structural schematic diagram of the display device involved in the present disclosure;

[0022] Figure 3 It is Figure 2 a cross-sectional schematic diagram taken along the A-A' direction in

[0023] Figure 4 a cross-sectional schematic diagram of the backplane provided by the embodiments of the present disclosure;

[0024] Figure 5 a cross-sectional schematic diagram of the frame structure provided by the embodiments of the present disclosure;

[0025] Figure 6 a cross-sectional schematic diagram of the frame structure provided by the embodiments of the present disclosure;

[0026] Figure 7 a cross-sectional schematic diagram of the backlight module provided by the embodiments of the present disclosure;

[0027] Figure 8 Another cross-sectional schematic diagram of the backlight module provided by the embodiments of the present disclosure. Detailed implementation manners

[0028] To enable those skilled in the art to better understand the technical solutions of the present disclosure, the backplane, frame structure, backlight module, and display device provided by the present disclosure will be described in detail below with reference to the accompanying drawings.

[0029] Figure 1 A cross-sectional schematic diagram of a display device involved in the related art, as Figure 1 shown. The display device includes: a frame structure 8 and a display panel 3. The frame structure 8 includes a backplane 1 and a middle frame 2. The backplane 1 includes: a bottom plate 101 (for carrying a light source, generally arranged in a plane) and a side wall 102. The middle frame 2 includes: a main body structure 201 and a carrying structure 202. Among them, the carrying structure 202 is used to carry and fix the display panel 3. Specifically, the display panel 3 includes a display area and an edge area surrounding the display area (the edge area does not display an image). The edge area of the display panel 3 is fixed to the carrying surface through a double-sided adhesive 4.

[0030] With the development of the full-screen technology, the width of the edge area on the display panel 3 is getting narrower and narrower. If the width of the carrying structure 202 remains unchanged, after the display panel 3 is fixed to the carrying surface of the carrying structure 202, the carrying structure 202 and the double-sided adhesive 4 will intrude into the display area of the display panel 3, affecting the display effect. If the width of the carrying structure 202 is reduced to avoid the intrusion of the carrying structure 202 and the double-sided adhesive 4 into the display area of the display panel 3, at this time, the carrying structure 202 is prone to stress deformation (for example, the display panel 3 presses down on the carrying structure 202, resulting in downward deformation of the carrying structure 202), causing the double-sided adhesive 4 between the carrying surface and the display panel 3 to fail, and further causing the display panel 3 to detach, that is, the overall carrying stability of the carrying structure 202 is relatively low.

[0031] To solve at least one of the technical problems existing in the related art, the present disclosure provides corresponding technical solutions, which will be described in detail below with reference to specific embodiments.

[0032] Figure 2 A structural schematic diagram of the display device involved in the present disclosure, Figure 3 is Figure 2 a cross-sectional schematic diagram taken along the A-A' direction in Figure 2 and Figure 3As shown, the display device includes: a backlight module and a display panel 3. The backlight module includes a frame structure 8, an optical module 5, and a light source (not shown). The frame structure 8 includes a back plate 1 and a middle frame 2. The back plate 1 is fixedly assembled with the middle frame 2. The middle frame 2 includes a main body structure 201 and a bearing structure 202. The display panel 3 is fixed on the bearing surface of the bearing structure 202. The light module includes a light guide plate 6 and optical films 7 (which may also include structures such as a diffusion plate). The light module is fixed within the frame structure 8.

[0033] In some embodiments, the side surface of the light guide plate 6 can be the light incident surface. In this case, the light source is a side-in type light source, and a reflective film can be provided on the lower surface of the light guide plate 6 to increase the light output amount on the upper surface of the light guide plate 6. In other embodiments, the lower surface of the light guide plate 6 is the light incident surface. In this case, the light source is a direct-lit type light source, and a reflective film can be provided on the side surface of the light guide plate 6 to increase the light output amount on the upper surface of the light guide plate 6. Both of these situations fall within the protection scope of the present disclosure.

[0034] Figure 4 This is a schematic cross-sectional view of the back plate provided by an embodiment of the present disclosure. As Figures 2 to 4 shown, an embodiment of the present disclosure provides a back plate 1. The back plate 1 is used to be assembled with the middle frame 2 to form a frame structure 8. The middle frame 2 includes a bearing structure 202 having a bearing surface. The bearing surface is used to bear the display panel 3. The back plate 1 includes: a bottom plate 101 and side walls 102 formed by bending the edges of the bottom plate 101. The side walls 102 are used to be assembled with the middle frame 2. A first support structure 103 is formed on the bottom plate 101. The first support structure 103 is used to support the bearing structure 202.

[0035] In the embodiment of the present disclosure, by forming the first support structure 103 on the bottom plate 101, the first support structure 103 can support the bearing structure 202 within the middle frame 2 after the back plate 1 and the middle frame 2 are assembled, effectively avoiding stress deformation of the bearing structure 202, thereby improving the overall bearing stability of the bearing structure 202, and further ensuring the bonding firmness between the display panel 3 and the bearing structure 202.

[0036] It should be noted that in the embodiment of the present disclosure, the first support structure 103 supporting the bearing structure 202 is not limited to the first support structure 103 directly contacting the bearing structure 202 to support the bearing structure 202. It can also be that the first support structure 103 contacts the bearing structure 202 through other structures to support the bearing structure 202. Specific examples will be combined later to support the bearing structure 202.

[0037] In some embodiments, the first support structure 103 is formed by bending a partial area on the bottom plate 101. The first support structure 103 is reused as a reinforcing rib to enhance the overall strength and rigidity of the backplane 1, thereby effectively preventing stress deformation of the backplane 1.

[0038] Further, the cross-sectional shape of the first support structure 103 in a cross-section perpendicular to the bottom plate 101 is in a "ji" shape. The reinforcing rib structure in a "ji" shape can, on the one hand, enhance the overall strength and rigidity of the backplane 1, and on the other hand, its top (the surface on the side away from the bottom plate 101) is planar, which is beneficial for providing stable support. In some embodiments, the surface of the first support structure 103 away from the bottom plate 101 is planar and has a preset width w1; wherein, if the width w1 is too large, the overall strength and rigidity of the backplane 1 will decrease; in some embodiments, the width w1 satisfies 0 < w1 ≤ 2 mm.

[0039] In some embodiments, a second support structure 203 is provided on the side of the bearing structure 202 facing away from the bearing surface; a receiving groove 104 is defined between the first support structure 103 and the side wall 102, and the receiving groove 104 is used to receive and support the second support structure 203; the specific situation will be described in detail later in combination with the drawings.

[0040] In some embodiments, the first support structure 103 is further used to cooperate with the side of the bearing structure 202 facing away from the bearing surface to clamp and fix the optical module 5 configured on the display panel 3. At this time, the first support structure 103 supports the bearing structure 202 through the optical module 5; the specific situation will be described in detail later in combination with the drawings.

[0041] The backplane 1 provided by the embodiments of the present disclosure can be an integral structure, and its material can be a metal material (such as aluminum), and the backplane 1 can be specifically prepared by a metal stamping process.

[0042] Figure 5 It is a cross-sectional schematic diagram of a frame structure provided by an embodiment of the present disclosure. As Figure 5 shown, the embodiments of the present disclosure also provide a frame structure 8, and the frame structure 8 includes a backplane 1 and a middle frame 2; wherein, the backplane 1 adopts the backplane 1 provided by the above embodiments, and the specific content can be referred to the content in the previous embodiments, which will not be elaborated here.

[0043] The middle frame 2 includes: a main body structure 201 and a bearing structure 202 located on the main body structure 201. The main body structure 201 is used for assembling and fixing with the side wall 102 in the backplane 1, such as being fixed by a clamping method, a screw fixing method, etc. The technical solution of the present disclosure does not limit the specific assembly method.

[0044] In some embodiments, the width w2 of the bearing surface on the bearing structure 202 satisfies 0.5 mm ≤ w2 ≤ 6 mm.

[0045] The width of the bearing surface on the bearing structure 202 can be designed according to the width of the edge area of the display panel 3. Generally, the width of the bearing surface is slightly smaller than the width of the edge area of the display panel 3. Given that the width of the edge area of the conventional display panel 3 ranges from 0.6 mm to 6 mm, in some embodiments, the width w2 of the bearing surface on the bearing structure 202 satisfies 0.5 mm ≤ w2 ≤ 6 mm.

[0046] In some embodiments, the bearing structure 202 and the main body structure 201 are integrally formed. Optionally, the entire middle frame 2 is an integrally formed structure, and the material of the middle frame 2 includes plastic, and specifically, the middle frame 2 can be prepared by an injection molding process.

[0047] In some embodiments, inside the middle frame 2, a second support structure 203 is provided on the side of the bearing structure 202 facing away from the bearing surface; inside the backplane 1, a receiving groove 104 is defined between the first support structure 103 and the side wall 102; wherein, the receiving groove 104 is used to receive the second support structure 203, and at the same time, by reasonably setting the height of the second support structure 203, the bottom of the second support structure 203 is in contact with the bottom of the receiving groove 104 (the bottom plate 101), that is, the bottom of the receiving groove 104 can support the second support structure 203. At this time, the second support structure 203 can also support the bearing structure 202, thereby further improving the overall bearing stability of the bearing structure 202.

[0048] In Figure 5 the shown situation, the first support structure 103 is in direct contact with the bearing structure 202 to support the bearing structure 202.

[0049] Figure 6 is a cross-sectional schematic diagram of a frame structure provided by an embodiment of the present disclosure. As Figure 6 shown, different from Figure 5 the shown situation, in Figure 6 the shown situation, there is a certain accommodation space 9 between the top of the first support structure 103 and the bearing structure 202. This accommodation space 9 is used for the first support structure 103 and the bearing structure 202 to clamp and fix the optical module 5. At this time, the first support structure 103 supports the bearing structure 202 through the optical module 5.

[0050] Figure 7 is a cross-sectional schematic diagram of a backlight module provided by an embodiment of the present disclosure, Figure 8 is another cross-sectional schematic diagram of a backlight module provided by an embodiment of the present disclosure. As Figure 7 and Figure 8As shown, an embodiment of the present disclosure further provides a backlight module. The backlight module includes a frame structure 8. The frame structure 8 adopts the frame structure 8 provided in the above embodiment. For the specific description of the frame structure 8, reference can be made to the content in the previous embodiment, and details will not be repeated here.

[0051] In some embodiments, the backlight module further includes an optical module 5. The optical module 5 at least includes a light guide plate 6 and optical films 7 (and may also include structures such as a diffusion plate). The optical module is fixed within the frame structure 8.

[0052] See Figure 7 As shown in, in some embodiments, the first support structure 103 is in direct contact with the carrier structure 202, and the optical module 5 can be fixed to the backplane 1. See Figure 8 As shown in, there is a certain accommodation space between the top of the first support structure 103 and the carrier structure 202. The optical module 5 is located between the first support structure 103 and the carrier structure 202. The first support structure 103 and the side of the carrier structure 202 facing away from the carrier surface cooperate to clamp and fix the optical module 5.

[0053] It should be noted that the backlight module in the embodiment of the present disclosure further includes a light source. The light source can be a direct - type light source or a side - entry light source.

[0054] Based on the same inventive concept, an embodiment of the present disclosure further provides a display device. See Figure 3 As shown, the display device includes a backlight module and a display panel 3. The backlight module adopts the backlight module provided in the above embodiment. For the specific description of the backlight module, reference can be made to the content in the previous embodiment, and details will not be repeated here. The display panel 3 can be fixed to the carrier surface through an adhesion structure (such as double - sided tape 4 or fixing glue).

[0055] It should be noted that Figure 3 The backlight module in the display device shown in Figure 8 The situation shown in is only for exemplary purposes and will not limit the technical solution of the present disclosure. In some embodiments, it is also possible to Figure 3 replace the backlight module in the display device shown in Figure 7 with the situation shown in, and this technical solution should also fall within the protection scope of the present disclosure.

[0056] The display device in the embodiment of the present disclosure can be: a liquid crystal display, an electronic paper, a mobile phone, a tablet computer, a television, a notebook computer, a digital photo frame, a navigator, or any product or component with a display function.

[0057] The technical solution of the present disclosure forms a first support structure on the bottom plate. After the back plate and the middle frame are assembled, the first support structure can support the bearing structure in the middle frame, effectively avoiding stress deformation of the bearing structure, thereby improving the overall bearing stability of the bearing structure, and further ensuring the bonding strength between the display panel and the bearing structure.

[0058] It can be understood that the above embodiments are merely exemplary embodiments adopted to illustrate the principles of the present disclosure. However, the present disclosure is not limited thereto. For those of ordinary skill in the art, various modifications and improvements can be made without departing from the spirit and essence of the present disclosure, and these modifications and improvements are also regarded as the protection scope of the present disclosure.

Claims

1. A backplane for assembling with a middle frame to form a frame structure, the middle frame including a bearing structure having a bearing surface for bearing a display panel, the backplane comprising: A bottom plate and side walls formed by bending the edges of the bottom plate, the side walls being used for assembling with the middle frame, characterized in that a first support structure is formed on the bottom plate, the first support structure being used for supporting the bearing structure, and the first support structure being in direct contact with the bearing structure.

2. The backplane according to claim 1, characterized in that, The first support structure is formed by bending a partial area on the bottom plate, and the first support structure is reused as a reinforcing rib.

3. The backplane according to claim 2, wherein The cross-sectional shape of the first support structure in a cross-section perpendicular to the bottom plate is in a "ji" shape.

4. The backplane according to claim 3, characterized in that, The surface of the first support structure away from the bottom plate is a plane and the width is less than or equal to 2 mm.

5. The backplane according to claim 1, characterized in that, A second support structure is provided on the side of the bearing structure facing away from the bearing surface; An accommodation groove is defined between the first support structure and the side wall, and the accommodation groove is used for accommodating and supporting the second support structure.

6. A frame structure, characterized in that, Comprising: The back plate as described in any one of claims 1 to 5 above and a middle frame assembled with the back plate.

7. The frame structure according to claim 6, characterized in that, The middle frame includes a bearing structure, and the width of the bearing surface on the bearing structure is more than 0.5 mm and less than 6 mm.

8. The frame structure according to claim 6 or 7, characterized in that The middle frame further includes: a main body structure, the bearing structure being located on the main body structure and integrally formed with the main body structure; The main body structure is assembled and fixed with the side wall in the back plate.

9. A backlight module, characterized in that, Comprising: The frame structure as described in any one of claims 6 to 8 above.

10. A display device, characterized in that, Comprising: The backlight module as described in claim 9 above and a display panel fixed on the bearing surface.

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