Reflector plate, backlight module and display terminal

Abstract

The utility model discloses a reflector plate, a backlight module and a display terminal. The reflector plate comprises a reflecting main plate and a plurality of reflecting side plates, the periphery of the reflecting main board is connected with the side edges of the reflecting side plates; the plurality of reflection side plates comprise a first reflection side plate arranged on the ground side of the back plate, and the first reflection side plate is provided with an accommodating groove; the back plate is provided with a mounting groove, and the reflector plate is configured to be arranged in the mounting groove; a bent edge is arranged on the ground side of the back plate, and when the reflector plate is configured to be arranged in the installation groove, the bent edge is configured to be located in the containing groove. By means of the containing groove of the reflector plate, the chip on film can bypass the back plate from the outer side of the containing groove to be connected with the main board, and therefore the problem that in the prior art, edge covering is conducted through acetic acid adhesive tape can be solved, and the assembling efficiency of the backlight module is improved; meanwhile, the containing groove can provide continuous and effective protection measures for the bent edge of the back plate, so that the problem that the chip on film is scratched by the bent edge of the back plate is avoided.

Description

TECHNICAL FIELD

[0001] Embodiments of the present application relate to the technical field of display, and in particular, to a reflective sheet, a backlight module and a display terminal. BACKGROUND

[0002] A display is a display device for displaying various information such as graphics, images, animations, videos, and video signals by controlling semiconductor light-emitting diodes. The material of the display screen inside the display is mostly glass, and a fixed frame is needed for fixing the display screen during fixed installation.

[0003] In related technologies, the membrane of the display is usually fixed by using a middle frame as a pressing part. Some displays use a middle frameless structure, that is, the glue frame is cancelled. However, the cancellation of the middle frame causes the bending edge of the display module backboard to be directly exposed, and the structure of the bending edge of the backboard is uneven, which causes the chip on film (COF-Chip On Flex, or Chip On Film) to be wound from the ground side of the backboard to the circuit board, and the exposed bending edge of the backboard causes scratches on the chip on film.

[0004] In order to avoid the above situation, the bending edge of the backboard is usually wrapped with acetic acid tape. However, the structure of the ground side of the backboard is uneven, and the area for pasting the acetic acid tape is small, which causes the acetic acid tape to easily lift up, and there is still a risk of scratching the chip on film. Practical new type content

[0005] Embodiments of the present application aim to provide a reflective sheet, a backlight module and a display terminal, which can solve the problem of scratches on the chip on film caused by the bending edge of the backboard.

[0006] To achieve the above-mentioned purpose, one aspect of an embodiment of the present application provides a reflective sheet, comprising a reflective main plate and a plurality of reflective side plates.

[0007] The outer periphery of the reflective main plate is connected with the side edges of the plurality of reflective side plates.

[0008] The plurality of reflective side plates comprise a first reflective side plate arranged on the ground side of the backboard, and the first reflective side plate has a receiving groove.

[0009] The backboard has a mounting groove, and the reflective sheet is arranged in the mounting groove.

[0010] The ground side of the backboard is provided with a bending edge, and when the reflective sheet is arranged in the mounting groove, the bending edge is arranged in the receiving groove.

[0011] The reflective sheet provided by the embodiment of the present application forms a wrapping protection structure on the bent edge of the back plate through the accommodating groove of the reflective sheet, so that the chip-on-film can bypass the bent edge of the back plate from the outside of the accommodating groove to be connected with the main plate, and the problem of scratch of the chip-on-film caused by the bent edge of the back plate can be effectively avoided.

[0012] Optionally, the first reflective side plate is provided with a plurality of first welt lines arranged in parallel in the first direction, and the plurality of first welt lines divide a plurality of reflective bent plates on the first reflective side plate, and the plurality of reflective bent plates form the accommodating groove.

[0013] Through the above scheme, the accommodating groove can be formed on the first reflective side plate through the plurality of first welt lines, so that the bent edge of the back plate can be located in the accommodating groove.

[0014] Optionally, the first reflective side plate has three reflective bent plates, the three reflective bent plates form a U-shaped accommodating groove on the ground side of the first reflective side plate, and the opening of the U-shaped accommodating groove is arranged towards the back plate side.

[0015] Through the above scheme, the U-shaped accommodating groove formed by the three reflective bent plates can completely wrap the useful edge of the bent edge, and the protection effect on the chip-on-film is improved.

[0016] Optionally, the connecting positions of the plurality of reflective side plates and the reflective main plate are respectively provided with second welt lines, and the connecting positions between the plurality of reflective side plates are provided with third welt lines.

[0017] Through the above scheme, the structure of the reflective sheet and the structure of the back plate can be matched through the second welt lines and the third welt lines, so that a stable connecting structure is formed between the reflective sheet and the back plate.

[0018] Optionally, the plurality of reflective side plates further include three second reflective side plates, and the three second reflective side plates are arranged around the reflective main plate in cooperation with the first reflective side plate.

[0019] Optionally, the second reflective side plate is provided with a mounting plate at an edge away from the reflective main plate, and a fourth welt line is arranged between the mounting plate and the second reflective side plate.

[0020] Through the above scheme, the mounting plate is formed on the second reflective side plate through the fourth welt line, and the mounting stability of the reflective sheet is improved through the mounting plate.

[0021] Optionally, the mounting plate is provided with a plurality of positioning members at an edge away from the second reflective side plate.

[0022] Through the above scheme, the plurality of positioning members can realize quick positioning in the mounting process of the reflective sheet.

[0023] To achieve the above object, another aspect of the embodiment of the present application further provides a backlight module, comprising a back plate, the back plate has a mounting groove, the reflective sheet is arranged in the mounting groove, the reflective sheet is provided with a diaphragm assembly away from the side of the back plate, the diaphragm assembly is connected with the main plate through a chip on film, and the main plate is arranged on the side of the back plate away from the reflective sheet.

[0024] Optionally, a plurality of positioning notches are arranged on the accommodating groove in the second direction, and the plurality of positioning notches are configured to position the diaphragm assembly.

[0025] Through the above scheme, the diaphragm assembly is quickly positioned on the reflective sheet through the positioning notches, and the assembly efficiency of the backlight module is improved.

[0026] Optionally, the mounting groove is provided with a plurality of light emitting pieces, and the reflective main plate is provided with a plurality of light transmission holes corresponding to the plurality of light emitting pieces.

[0027] To achieve the above object, another aspect of the embodiment of the present application further provides a display terminal comprising the backlight module.

[0028] The reflective sheet provided by the embodiment of the present application can make the chip on film bypass the back plate from the outside of the accommodating groove and be connected with the main plate, so that the process of edge wrapping through the acetic acid cloth in the prior art can be solved, and the assembly efficiency of the backlight module is improved. Meanwhile, the accommodating groove can provide continuous and effective protection measures for the bent edge of the back plate, so as to avoid the problem that the chip on film is scratched by the bent edge of the back plate. BRIEF DESCRIPTION OF DRAWINGS

[0029] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed in the embodiment description will be briefly introduced. Obviously, the drawings in the following description are only some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative labor.

[0030] Figure 1 A structural schematic diagram of a reflective sheet provided by the embodiment of the present application is shown in FIG. 1.

[0031] Figure 2 A structural schematic diagram of a reflective sheet provided by the embodiment of the present application is shown in FIG. 1. Figure 1 A partial enlarged structural schematic diagram of the reflective sheet in FIG. 1 is shown in FIG. 2.

[0032] Figure 3 A partial enlarged structural schematic diagram of the reflective sheet in FIG. 1 is shown in FIG. 2. Figure 2 A longitudinal sectional structural schematic diagram of the accommodating groove in FIG. 1 is shown in FIG. 3.

[0033] MARK DESCRIPTION:

[0034] 1000, reflective sheet;

[0035] 100, reflective main plate; 101, light transmission hole;

[0036] 110, first reflective side plate; 111, first saddle stitch line; 112, reflective bent plate; 113, positioning notch;

[0037] 120, second reflective side plate; 121, second saddle stitch line; 122, third saddle stitch line; 123, fourth saddle stitch line;

[0038] 130, mounting plate; 131, positioning member;

[0039] 2000, back plate; 2001, bent edge;

[0040] 3000, diaphragm assembly; 3001, chip on film. DETAILED DESCRIPTION

[0041] As described in the background, in the display module adopted by the related art interactive intelligent panel (I IP-i nteract i ve i nte l li gent pane l), the glue frame (i.e., the middle frame) is pasted and fixed in the form of double-sided adhesive to enable the glue frame to position and fix the reflective sheet of the display module. In the related art, the glue frame not only has the effect of fixing the reflective sheet, but also protects the edge of the back plate of the display module, preventing the chip on film of the diaphragm assembly from contacting the edge of the back plate, which would scratch the chip on film.

[0042] In order to avoid the edge of the back plate on the ground side from scratching the chip on film, the related art can provide an acetic acid tape on the edge for edge treatment; however, the edge structure on the ground side of the back plate is not a flat pasting surface, and the small edge structure causes the acetic acid tape to be unable to maintain a stable pasting state, which is prone to problems such as warping.

[0043] In order to further improve the assembly process of the interactive intelligent panel and reduce the material cost, the related art can adopt a no-middle-frame structure model that cancels the glue frame. However, some no-middle-frame structure models, due to the cancellation of the glue frame, cause the ground side bent edge of the back plate in the display module to be directly exposed, and the chip on film of the diaphragm assembly needs to bypass the ground side of the back plate and be connected to the main plate, which causes the edge of the display module to scratch the chip on film.

[0044] To solve the above technical problems, the embodiment of the present application provides a reflective sheet, which comprises a reflective main plate and a first reflective side plate and a second reflective side plate, the reflective main plate, the first reflective side plate and the second reflective side plate are matched with the mounting groove structure of the back plate through the setting of the welt line to form the folded edge structure; on this basis, the inventor finds through research that the first reflective side plate located at the ground side can be extended along the ground side direction, and the welt line is arranged on the extended part, the welt line can form an accommodation groove on the first reflective side plate, and the welt line can wrap the bent edge of the back plate, so that the body structure of the reflective sheet can wrap and protect the bent edge of the back plate, thereby effectively solving the problem of scratches on the chip-on-film caused by the bent edge of the back plate; meanwhile, the process of wrapping the edge with the acetic acid cloth in the prior art is cancelled, which not only saves materials, but also significantly improves the assembly process of the backlight module.

[0045] To make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be described clearly and completely below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, not all embodiments.

[0046] Based on the embodiments in the present application, all other embodiments obtained by those skilled in the art without creative labor are within the scope of protection of the present application. In the case of no conflict, the following embodiments and features in the embodiments can be combined with each other.

[0047] For the convenience of description, the embodiments of the present application use a coordinate system established by the first direction and the second direction perpendicular to each other to describe the backlight module. The ground side of the back plate 2000 is the first direction (as indicated by the arrow X in the figure); the extending direction of the positioning notch 113 is the second direction (as indicated by the arrow Y in the figure).

[0048] The embodiment of the present application provides a reflective sheet, Figure 1 The structure schematic diagram of the reflective sheet 1000 provided by the embodiment of the present application is shown in FIG. 1. Figure 1 , which comprises a reflective main plate 100 and a plurality of reflective side plates.

[0049] The outer periphery of the reflective main plate 100 is connected with the side edges of the plurality of reflective side plates.

[0050] The plurality of reflective side plates comprises a first reflective side plate 110 arranged at the ground side of the back plate 2000, and the first reflective side plate 110 has an accommodation groove.

[0051] The back plate 2000 has a mounting groove, and the reflective sheet 1000 is arranged in the mounting groove.

[0052] The ground side of the back plate 2000 is provided with a bent edge 2001, and the reflective sheet 1000 is configured to be arranged in the mounting groove, and the bent edge 2001 is configured to be located in the accommodation groove. The ground side of the back plate 2000, that is, the side close to the ground when the display such as an interactive smart tablet is placed.

[0053] In the use process of the embodiment of the present application, in order to avoid that the leading edge of the bent edge 2001 causes scratches to the chip-on-film 3001, the reflective sheet 1000 is provided with an accommodation groove for wrapping the bent edge 2001, so that the chip-on-film 3001 can bypass the back plate 2000 from the outside of the accommodation groove and be connected to the main board, thereby solving the additional process of edge wrapping by acetic acid cloth in the related art, and improving the assembly efficiency of the backlight module. At the same time, the accommodation groove can provide continuous and effective protection for the bent edge 2001 of the back plate 2000, so as to avoid the problem that the chip-on-film 3001 is scratched by the bent edge 2001 of the back plate 2000.

[0054] Figure 2 For Figure 1 The partial enlarged structural schematic view of the reflective sheet. Referring to Figure 2 , the first reflection side plate 110 can be provided with a plurality of first welt lines 111 arranged in parallel in the first direction, and the plurality of first welt lines 111 divide a plurality of reflection bent plates 112 on the first reflection side plate 110, and the plurality of reflection bent plates 112 constitute the accommodation groove.

[0055] Specifically, two first welt lines 111 can be arranged on the first reflection side plate 110, and two reflection bent plates 112 can be divided on the first reflection side plate 110, and a V-shaped accommodation groove (not shown in the figure) can be constituted by the two reflection bent plates 112;

[0056] Preferably, Figure 3 For Figure 2 The longitudinal sectional structural schematic view of the accommodation groove. Referring to Figure 3 , the first reflection side plate 110 can be provided with three first welt lines 111 arranged in parallel, and three reflection bent plates 112 are divided on the first reflection side plate 110, and the three reflection bent plates 112 form a U-shaped accommodation groove on the ground side of the first reflection side plate 110, and the opening of the U-shaped accommodation groove is arranged towards the side of the back plate 2000. At this time, the bent plate of the back plate 2000 can be inserted into the opening of the accommodation groove, so that the chip-on-film 3001 of the diaphragm assembly 3000 can bypass the bent plate of the back plate 2000 from the outside of the accommodation groove and be connected to the main board.

[0057] In some embodiments, referring to Figure 2 , the connection positions of the plurality of reflection side plates and the reflection main plate 100 are respectively provided with second welt lines 121, and the connection positions between the plurality of reflection side plates are provided with third welt lines 122.

[0058] Further, the plurality of reflective side plates further comprises three second reflective side plates 120, which are arranged in cooperation with the first reflective side plates 110 and around the reflective main plate 100.

[0059] The second and third stitching lines 121 and 122 are arranged on the reflective sheet 1000, so that the reflective main plate 100 and the reflective side plates form a structure that matches the mounting groove structure of the back plate 2000, thereby ensuring that the reflective sheet 1000 can be evenly attached to the mounting groove of the back plate 2000, and the reflective performance of the reflective sheet 1000 is ensured.

[0060] Further, the second reflective side plate 120 is provided with a mounting plate 130 at the edge away from the reflective main plate 100, and the fourth stitching line 123 is arranged between the mounting plate 130 and the second reflective side plate 120.

[0061] In some embodiments, the outer periphery of the reflective side plate is provided with a mounting plate 130, and the fourth stitching line 123 is arranged between the reflective side plate and the mounting plate 130. The mounting plate 130 can be connected to an external structure to facilitate the fixation of the reflective sheet 1000. The structure of the mounting plate 130 can also be adjusted to increase the effective area of the connection between the mounting plate 130 and the external structure, thereby improving the installation stability of the reflective sheet 1000. Further, the mounting plate 130 can be uniformly arranged along the edge of the reflective side plate to improve the stability of the fixation of the edge of the reflective side plate. For example, when the edge of the reflective side plate is a straight edge, the mounting plate 130 can be arranged in a strip structure along the edge of the reflective side plate. When the strip-shaped mounting plate 130 is uniformly and stably fixed, the edge of the reflective side plate connected to the mounting plate 130 can also be uniformly and stably fixed, thereby avoiding the protrusion of the reflective side plate due to the local unfixed part.

[0062] Reference Figure 1 and Figure 2 The mounting plate 130 is provided with a plurality of positioning members 131 at the edge away from the second reflective side plate 120. In order to improve the positioning and installation efficiency of the reflective sheet 1000 in the mounting groove of the back plate 2000, a plurality of positioning members 131 can be uniformly arranged on each mounting plate 130, and a positioning groove can be arranged on the positioning member 131 to improve the positioning efficiency of the reflective sheet 1000 in the mounting groove of the back plate 2000.

[0063] Reference Figure 3 Based on the backlight module in the embodiments of the present application, the backlight module comprises a back plate 2000, the back plate 2000 can have a mounting groove, the reflective sheet 1000 in the above embodiments is arranged in the mounting groove, the reflective sheet 1000 is provided with a diaphragm assembly 3000 at the side away from the back plate 2000, the diaphragm assembly 3000 is connected to a main plate through a chip on film 3001 (the main plate is not shown in the figure), and the main plate is arranged on the side of the back plate 2000 away from the reflective sheet 1000.

[0064] The back plate 2000 is provided with a bent edge 2001 on the ground side, and the bent edge 2001 is arranged in the accommodating groove of the reflecting sheet 1000.

[0065] In order to avoid the bent edge 2001 of the back plate 2000 scratching the chip on film 3001, the bent edge 2001 is wrapped by the accommodating groove of the reflecting sheet 1000, so that the protection of the chip on film 3001 can be realized by the accommodating groove structure of the reflecting sheet 1000, the acetic acid cloth pasting process in the prior art can be cancelled, and the accommodating groove is the structure of the reflecting sheet 1000 itself, which can effectively maintain the continuous wrapping state of the bent edge 2001, thereby improving the service life of the chip on film 3001 and the display.

[0066] In some embodiments, a plurality of positioning notches 113 are arranged on the accommodating groove in the second direction, and the plurality of positioning notches 113 are used for positioning the diaphragm assembly 3000. Through the plurality of positioning notches 113, the diaphragm assembly 3000 can be quickly positioned on the back plate 2000 through the positioning notches 113, further improving the assembly efficiency of the staff on the backlight module.

[0067] In some embodiments, a plurality of light emitting pieces can be arranged in the mounting groove, the reflecting main plate 100 can be provided with a plurality of light transmission holes 101 corresponding to the plurality of light emitting pieces one by one, the reflecting sheet 1000 is arranged in the mounting groove of the back plate 2000, and the plurality of light emitting pieces are arranged in the plurality of light transmission holes 101.

[0068] The light emitted by the light emitting piece is reflected by the reflecting sheet 1000 on the surface of the reflecting sheet 1000, and the uniformity of the light reflected by the reflecting sheet 1000 is improved by the reflecting side plate, thereby improving the brightness uniformity of the backlight module provided with the reflecting sheet 1000. The back plate 2000 is provided with a plurality of light emitting pieces, the reflecting sheet 1000 is provided with a light transmission hole 101 corresponding to the light emitting piece one by one, the reflecting sheet 1000 is arranged in the mounting groove of the back plate 2000, and the light emitting piece is arranged in the light transmission plate.

[0069] Based on the above embodiments, the back plate 2000 serves as the mounting basis of the backlight source and the reflecting sheet 1000, the light emitting piece on the back plate 2000 provides the light source, the light source is transmitted from the light transmission hole 101 on the reflecting sheet 1000, and is reflected by the reflecting sheet 1000, so as to ensure that the light emitted by the backlight module is more dispersed and uniform.

[0070] In some embodiments, the reflecting sheet 1000 can be fixed in the mounting groove by adhesive or double-sided adhesive.

[0071] Wherein, the terms such as "upper", "lower" and the like are used to describe the relative positional relationship of various structures in the drawings, which are only for the convenience of clear description, and are not intended to limit the scope of the application. The change or adjustment of the relative relationship is also considered as the scope of the application without substantial change of the technical content.

[0072] It should be noted that in the present application, unless otherwise explicitly specified and limited, the first feature is "on" or "under" the second feature, which can be direct contact of the first and second features, or indirect contact of the first and second features through an intermediate medium. Moreover, the first feature "above", "above" and "above" the second feature can be directly above or obliquely above the first feature, or only indicate that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature can be directly below or obliquely below the first feature, or only indicate that the horizontal height of the first feature is less than that of the second feature.

[0073] In addition, in the present application, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connecting", "fixing" and the like should be understood broadly, for example, it can be fixed connection, or detachable connection, or integral; it can be direct connection, or indirect connection through an intermediate medium, it can be the internal communication of two elements or the interaction relationship of two elements. For those skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0074] In the description of the present application, the description of the terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example" or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present disclosure. In the present application, the exemplary description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0075] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, and not to limit them; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some or all of the technical features can be replaced by equivalents; and these modifications or replacements do not make the essence of the corresponding technical solutions deviate from the scope of the technical solutions of the embodiments of the present application.

Claims

1. A reflective sheet for a back plate (2000) of a backlight module, characterized in that, The reflection main plate (100) and a plurality of reflection side plates are included. The outer periphery of the reflection main plate (100) is connected with the side edges of the plurality of reflection side plates. The plurality of reflection side plates include a first reflection side plate (110) arranged on the ground side of the back plate (2000), and the first reflection side plate (110) has a containing groove. The back plate (2000) has a mounting groove, and the reflection sheet (1000) is arranged in the mounting groove. The ground side of the back plate (2000) is provided with a bending edge (2001), and when the reflection sheet (1000) is arranged in the mounting groove, the bending edge (2001) is arranged in the containing groove.

2. The reflector sheet according to claim 1, characterized by The first reflection side plate (110) is provided with a plurality of first darts (111) arranged in parallel in a first direction, and the plurality of first darts (111) divide the first reflection side plate (110) into a plurality of reflection bending plates (112), and the plurality of reflection bending plates (112) form the containing groove.

3. The reflector sheet according to claim 2, characterized by The first reflection side plate (110) has three reflection bending plates (112), and the three reflection bending plates (112) form a U-shaped containing groove on the ground side of the first reflection side plate (110), and the opening of the U-shaped containing groove is arranged towards the side of the back plate (2000).

4. The reflector sheet according to claim 1, characterized by The plurality of reflection side plates are respectively provided with second darts (121) at the connection positions with the reflection main plate (100), and the plurality of reflection side plates are provided with third darts (122) at the connection positions between the plurality of reflection side plates.

5. The reflector sheet according to claim 4, characterized by The plurality of reflection side plates further include three second reflection side plates (120), and the three second reflection side plates (120) are arranged around the reflection main plate (100) in cooperation with the first reflection side plate (110).

6. The reflector sheet according to claim 5, characterized by The second reflection side plate (120) is provided with a mounting plate (130) at the side edge away from the reflection main plate (100), and the mounting plate (130) and the second reflection side plate (120) are provided with a fourth dart (123) therebetween.

7. The reflector sheet according to claim 6, characterized by The mounting plate (130) is provided with a plurality of positioning members (131) at the edge away from the second reflection side plate (120).

8. A backlight module, characterized in that, The back plate (2000) has a mounting groove, and the reflection sheet (1000) of any one of claims 1-7 is arranged in the mounting groove, and the reflection sheet (1000) is provided with a diaphragm assembly (3000) away from the side of the back plate (2000), the diaphragm assembly (3000) is connected with a main plate through a chip on film (3001), and the main plate is arranged on the side of the back plate (2000) away from the reflection sheet (1000). The ground side of the back plate (2000) is provided with a bending edge (2001), and the bending edge (2001) is arranged in the containing groove of the reflection sheet (1000).

9. The backlight module of claim 8, wherein, A plurality of positioning notches (113) are arranged in a second direction on the containing groove, and the plurality of positioning notches (113) are used for positioning the diaphragm assembly (3000).

10. The backlight module of claim 8, wherein, The mounting groove is provided with a plurality of light emitting members, and the reflection main plate (100) is provided with a plurality of light transmission holes (101) corresponding to the plurality of light emitting members.

11. A display terminal, characterized by The backlight module of any one of claims 8-10.

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