Display module and display device

Abstract

The invention discloses a display module and a display device.The display module comprises a supporting assembly, a display panel and a circuit board, the display panel is stacked on the supporting assembly, one end of the circuit board is located on the display panel and connected with the display panel in a binding mode, and a gap is formed between the circuit board and the supporting layer; a drainage groove communicated with the interval is formed in the supporting assembly. According to the technical scheme, the drainage groove formed in the supporting assembly is communicated with the interval, and under the condition that liquid, especially corrosive liquid enters the interval, the liquid enters the drainage groove before making contact with the display panel and the circuit board, so that the display module can be prevented from being corroded by the liquid, and the functional stability of the display module is guaranteed.

Description

Technical Field

[0001] The present application relates to the field of display technology, and in particular to a display module and a display device. Background Art

[0002] In related technologies, the circuit board and the display panel are bound together. When corrosive liquid gathers in the binding area between the panel and the circuit board, that is, on the side of the FOP end, the liquid will form a siphon effect from the tiny gap on the side and enter the binding area between the panel and the circuit board, causing corrosion of the metal circuit of the display device, thereby leading to malfunction. Summary of the Invention

[0003] The embodiments of the present application provide a display module and a display device, which ensure the functional stability of the display module, so as to at least partially solve the above-mentioned technical problems.

[0004] To achieve the above objectives, according to a first aspect of the present application, a display module is provided, comprising:

[0005] Support components;

[0006] a display panel stacked on the support assembly; and

[0007] a circuit board, one end of which is located on the display panel and is bound and connected to the display panel, and a gap is provided between the circuit board and the supporting assembly;

[0008] Wherein, the support assembly is provided with a drainage groove, and the drainage groove is connected to the interval.

[0009] Optionally, the support assembly includes:

[0010] a supporting layer, to which the other end of the circuit board is fixed;

[0011] a reinforcement layer stacked on the support layer; and

[0012] a back plate stacked on the reinforcement layer;

[0013] Wherein, the reinforcement layer is provided with the drainage groove.

[0014] Optionally, the drainage groove is provided on a side of the reinforcement layer away from the display panel.

[0015] Optionally, the reinforcement layer includes a body, a first connection layer and a second connection layer, the body is located between the first connection layer and the second connection layer, the first connection layer is located between the display panel and the body, and the second connection layer is located between the support layer and the reinforcement layer;

[0016] The second connecting layer is provided with the drainage groove.

[0017] Optionally, the drainage groove penetrates the first connecting layer along a thickness direction of the first connecting layer.

[0018] Optionally, edges of the display panel and the back plate are beyond edges of the reinforcing layer to form a receiving space, and the drainage groove is arranged in communication with the gap through the receiving space.

[0019] Optionally, the drainage groove comprises a plurality of first drainage grooves and a plurality of second drainage grooves arranged in intersection.

[0020] The first drainage grooves extend along the first direction and are arranged in interval along a second direction, and the second drainage grooves extend along the second direction and are arranged in interval along the first direction.

[0021] Optionally, the width of the drainage groove is arranged to be the same as the depth of the drainage groove.

[0022] Optionally, the display module further comprises an adhesive, which is connected to the circuit board to protect a binding area of the circuit board and the display panel; and the adhesive is arranged in interval with edges of the display panel, so that the drainage groove is in communication with the binding area between the circuit board and the display panel through the receiving space.

[0023] According to a second aspect of the present application, a display device is provided, comprising the display module as described above.

[0024] The present application has the beneficial effect of providing a display module capable of ensuring functional stability.

[0025] More specifically, some embodiments of the present application can have the following specific beneficial effects:

[0026] In the display module of the embodiments of the present application, the display module comprises a support assembly, a display panel and a circuit board, wherein the display panel is arranged in layers on the support assembly, one end of the circuit board is located on the display panel and is in binding connection with the display panel, and there is a gap between the circuit board and the support layer, and a drainage groove is arranged in communication with the gap on the support assembly. Through the above technical solution, the drainage groove arranged on the support assembly is arranged in communication with the gap, and liquid, especially corrosive liquid, enters the drainage groove before contacting the display panel and the circuit board, so that the corrosion of the liquid to the display module can be avoided, and the functional stability of the display module is ensured.

[0027] Other features and advantages of the present application will be described in detail in the following specific embodiments. BRIEF DESCRIPTION OF DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used 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 any creative effort on the basis of these drawings.

[0029] In order to more completely understand the present application and its beneficial effects, the following will be described in conjunction with the drawings, wherein the same reference numerals in the following description represent the same parts.

[0030] Figure 1 is a schematic diagram of the overall structure of a display module provided in an exemplary embodiment of the present application;

[0031] Figure 2 is a schematic diagram of a display module of another structure provided in an exemplary embodiment of the present application;

[0032] Figure 3 is a schematic diagram of a structure in which a drainage groove is formed on a second connecting layer provided in an exemplary embodiment of the present application;

[0033] Figure 4 is a schematic diagram of another angle of a structure in which a drainage groove is formed on a second connecting layer provided in an exemplary embodiment of the present application;

[0034] Figure 5 is a schematic diagram of a structure in which a liquid flows along a drainage groove in a case where a drainage groove is formed on a second connecting layer provided in an exemplary embodiment of the present application;

[0035] Figure 6 is a schematic diagram of a structure in which a fourth interval is provided between a circuit board and a display panel provided in an exemplary embodiment of the present application;

[0036] Figure 7 is a schematic diagram of a display module of still another structure provided in an exemplary embodiment of the present application.

[0037] BRIEF DESCRIPTION OF DRAWINGS:

[0038] 100, display module; 100a, first interval; 100b, accommodation space; 100c, binding area; 100d, second interval; 100e, third interval; 100f, fourth interval;

[0039] 110, support layer;

[0040] 120, reinforcing layer; 120a, drainage groove; 12a1, first drainage groove; 12a2, second drainage groove;

[0041] 121, body; 122, first connecting layer; 123, second connecting layer;

[0042] 130, second back plate; 140, display panel; 150, circuit board; 160, back adhesive; 170, insulating adhesive; 180, conductive adhesive;

[0043] a, display section; b2, pressing section; b1, bending section; AA, display plane area; VA, binding bending area; T, pressing overlap area; 210, first back plate; 220, foam layer. DETAILED DESCRIPTION

[0044] The technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by a person skilled in the art without creative labor fall within the protection scope of the present application.

[0045] It should be noted that, for the purpose of Figure 1 For the convenience of introducing the relative positional relationship between the parts in the present application, the up, down, left, right, front and back directions are used in the corresponding drawings, which should not be understood as the limitation of the absolute position.

[0046] In addition, in the present application, the first direction corresponds to the left-right direction, the second direction corresponds to the front-back direction, and the third direction corresponds to the up-down direction; as mentioned above, the first direction indicates the left-right direction only for the convenience of introducing the specific embodiments of the present application, and the first direction does not have an absolute corresponding relationship with the left-right direction; similarly, the second direction does not have an absolute corresponding relationship with the front-back direction, and the third direction does not have an absolute corresponding relationship with the up-down direction.

[0047] The first direction, the second direction and the third direction of the present application are only for expressing the relative positional relationship, and they only indicate the approximate direction, rather than the absolute geometric relationship.

[0048] Based on the problems mentioned in the foregoing background art, in the related art, the circuit board 150 and the display panel 140 are bound and connected, when the corrosive liquid gathers at the side of the binding place of the display panel 140 and the circuit board 150, i.e. the side of the binding place of the display panel 140 and the circuit board 150, the liquid will form a siphon effect from the small gap on the side, enter the binding place of the display panel 140 and the circuit board 150, and cause the metal circuit of the display device to be corroded, thereby leading to poor function.

[0049] Among them, the tape is used to be attached to the binding point between the circuit board 150 and the display panel 140 to seal the binding point, but the tape may have the problem of warping, and may also allow corrosive liquid to enter the binding point between the display panel 140 and the circuit board 150.

[0050] According to the first aspect of this application, reference Figure 1 , provides a display module 100 , which includes: a supporting component and a display panel 140 , and a circuit board 150 .

[0051] Among them, the display panel 140 in the embodiment of the present application is stacked on the supporting component, one end of the circuit board 150 is located on the display panel 140 and is bound to the display panel 140, and there is a gap between the circuit board 150 and the supporting layer 110, and a drainage groove 120a is opened on the reinforcing layer 120, and the drainage groove 120a is connected to the gap.

[0052] Through the above technical solution, the drainage groove 120a provided on the support assembly is connected to the gap. When liquid, especially corrosive liquid, enters the gap, the liquid will enter the drainage groove 120a before contacting the display panel 140 and the circuit board 150. This can prevent the liquid from corroding the display module 100 and ensure the functional stability of the display module 100.

[0053] In some embodiments, the support assembly includes a support layer 110, a reinforcement layer 120, and a back plate 130. Figure 1 and Figure 2 The reinforcing layer 120 is stacked on the supporting layer 110, the back plate 130 is stacked on the supporting layer 110, the display panel 140 is stacked on the back plate 130, one end of the circuit board 150 is located on the display panel 140 and is bound and connected to the display panel 140, and a drainage groove 120a is opened on the reinforcing layer 120.

[0054] Specifically, when corrosive liquid (sweat / salt spray) invades the gap between the circuit board 150 and the supporting layer 110, the liquid is preferentially drawn into the drainage groove 120a through the capillary effect, rather than diffusing laterally to the binding area 100c between the display panel 140 and the circuit board 150, thereby physically blocking the corrosion path. That is, when there is a gap between the circuit board 150 and the supporting layer 110, the liquid will not invade the binding area 100c between the circuit board 150 and the display panel 140, significantly reducing the risk of corrosion between the circuit board 150 and the display panel 140. At the same time, the display module 100 in the embodiment of the present application can also avoid the problem of sealing failure caused by edge warping of the tape, thereby improving the reliability of the display module 100 in harsh environments such as sweat and salt spray without increasing costs.

[0055] refer toFigure 1 and Figure 2 The circuit board 150, the display panel 140, the back plate 130, the reinforcing layer 120 and the support layer 110 are stacked from top to bottom. The support layer 110 is configured of a metal material, and the reinforcing layer 120 can be configured of an insulating material.

[0056] The gap between the circuit board 150 and the support layer 110 is defined as the first gap 100a. In the case that a liquid, especially a corrosive liquid, enters the first gap 100a, the liquid will enter the drainage groove 120a before contacting the display panel 140 and the circuit board 150, so as to avoid corrosion of the display module 100 and ensure the functional stability of the display module 100.

[0057] The end of the circuit board 150 away from the binding area 100c is connected to the support layer 110 through the insulating adhesive 170.

[0058] In some embodiments, the drainage groove 120a is arranged on the side of the reinforcing layer 120 away from the display panel 140.

[0059] By arranging the drainage groove 120a on the side of the reinforcing layer 120 away from the display panel 140, the liquid in the drainage groove 120a is further isolated from the position outside the binding area 100c of the display panel 140 and the circuit board 150, and the side away from the display panel 140 will not spread to the display panel 140.

[0060] In some embodiments, referring to Figure 3 The reinforcing layer 120 includes a body 121, a first connecting layer 122 and a second connecting layer 123. The body 121 is located between the first connecting layer 122 and the second connecting layer 123. The first connecting layer 122 is located between the display panel 140 and the body 121. The second connecting layer 123 is located between the support layer 110 and the reinforcing layer 120. The second connecting layer 123 is provided with the drainage groove 120a.

[0061] For example, the first connecting layer 122 and the second connecting layer 123 are both configured as pressure-sensitive adhesive layers made of pressure-sensitive adhesive. The body 121 is made of an insulating material, such as PET material. The pressure-sensitive adhesive is formed on both sides of the insulating material, thereby forming the reinforcing layer 120. The insulating body 121 is connected to the back plate 130 and the support layer 110 through the pressure-sensitive adhesive, so that the back plate 130 and the support layer 110 are insulated.

[0062] In the embodiments of the present application, the thickness of the first connecting layer 122 and the thickness of the second connecting layer 123 are the same, and both are smaller than the thickness of the body 121.

[0063] In some embodiments, referring to Figure 3 The drain groove 120a penetrates the first connecting layer 122 along the thickness direction of the first connecting layer 122, that is, the thickness of the drain groove 120a is the same as the thickness of the first connecting layer 122.

[0064] In some embodiments, referring to

[0065] That is, the drain groove 120a can be arranged in communication with the first space 100a through the accommodation space 100b

[0066] In some embodiments, referring to Figure 5 The drain groove 120a includes a plurality of first drain grooves 12a1 and a plurality of second drain grooves 12a2 arranged in intersection; the plurality of first drain grooves 12a1 extend along a first direction and are arranged in interval along a second direction; the plurality of second drain grooves 12a2 extend along the second direction and are arranged in interval along the first direction.

[0067] With such a scheme, the plurality of first drain grooves 12a1 and the plurality of second drain grooves 12a2 can be arranged in horizontal and vertical intersection, the liquid can flow in different directions, liquid accumulation can be avoided, and the plurality of drain grooves 120a can improve the efficiency of liquid intrusion into the drain grooves 120a as much as possible.

[0068] The first direction and the second direction are arranged in intersection. Further, the first direction and the second direction can be arranged in perpendicular. In this way, the first drain grooves 12a1 and the second drain grooves 12a2 can be arranged in perpendicular.

[0069] In the embodiments of the present application, referring to Figure 4 The first drain grooves 12a1 extend along the left-right direction, and the plurality of first drain grooves 12a1 are arranged in interval along the front-back direction; the second drain grooves 12a2 extend along the front-back direction, and the plurality of second drain grooves 12a2 are arranged in interval along the left-right direction.

[0070] In some embodiments, the width of the drain groove 120a is the same as the depth of the drain groove 120a. By arranging the width of the drain groove 120a to be the same as the depth of the drain groove 120a, it is convenient for molding.

[0071] For example, the width of the first drain groove 12a1 is the same as the depth of the first drain groove 12a1, and the width of the second drain groove 12a2 is the same as the depth of the second drain groove 12a2.

[0072] In some embodiments, referring to Figure 6The display module 100 further comprises an adhesive 160 connected to the circuit board 150 to protect the binding area 100c of the circuit board 150 and the display panel 140; wherein the adhesive 160 is spaced apart from the edge of the display panel 140, so that the drainage groove 120a communicates with the binding area 100c of the circuit board 150 and the display panel 140 through the accommodation space 100b.

[0073] In the display module 100 in the embodiment of the present application, the adhesive 160 is connected to the circuit board 150 to protect the binding area 100c of the circuit board 150 and the display panel 140, and the adhesive 160 can be spaced apart from the edge of the display panel 140, so that the drainage groove 120a communicates with the binding area 100c between the circuit board 150 and the display panel 140 through the accommodation space 100b. In this way, in the case that liquid invades the space, the liquid can be drained into the drainage groove 120a along the accommodation space 100b, and the corrosion of the adhesive 160 can be avoided. In addition, the adhesive 160 is spaced apart from the edge of the display panel 140, so that in the case that there is liquid in the binding area 100c between the circuit board 150 and the display panel 140, the liquid in the binding area 100c can also flow out from the space between the adhesive 160 and the edge of the display panel 140, along the accommodation space 100b, into the drainage groove 120a, thereby realizing the drainage of the binding area 100c.

[0074] In the embodiment of the present application, the space between the adhesive 160 and the edge of the display panel 140 is defined as a second space 100d. Exemplarily, there is also a space between the adhesive 160 and the edge of the back plate 130, which is defined as a third space 100e. It should be noted that the edge of the display panel 140 and the edge of the back plate 130 are aligned.

[0075] In the embodiment of the present application, the binding area 100c of the circuit board 150 and the display panel 140 is filled with conductive adhesive 180, and in the case that there is a fourth space 100f between the binding area 100c of the circuit board 150 and the display panel 140, the liquid in the binding area 100c can also be drained from the fourth space 100f into the second space 100d between the adhesive 160 and the display panel 140, and introduced into the drainage groove 120a along the third space 100e.

[0076] Reference Figure 7 The display module 100 in the embodiment of the present application comprises a display segment a, a pressing segment b2 arranged oppositely, and a bending segment b1 connecting the display segment a and the pressing segment b2; the display module comprises a display planar area AA and a binding bending area VA, the display planar area AA comprises a pressing overlapping area T, and the orthographic projection of the pressing segment b2 on the display segment a covers the pressing overlapping area T.

[0077] Specifically, the display module of the display segment a includes the first back plate 210 and the foam layer 220. The display module of the pressing segment b2 includes the support layer 110, the reinforcing layer 120, the second back plate 130 (the back plate 130 is defined as the second back plate 130), the display panel 140 as the display functional layer, a part of the display functional layer is laminated on the second back plate 130 as the non-effective display part, and a part of the display functional layer is laminated on the first back plate 2210 after being bent as the effective display part.

[0078] It should be noted that the embodiment takes the area of the pad bending structure part as an example for description. In the pad bending structure of the display module 100, the binding segment of the display module is bent by 180° for pressing, and the display functional layer includes the effective display part and the non-effective display part, wherein the effective display part corresponds to the display segment a of the display module in the embodiment, and the non-effective display part includes the first non-effective display part and the second non-effective display part, the first non-effective display part corresponds to the bending segment b1 of the display module in the embodiment, and the second non-effective display part corresponds to the pressing segment b2 of the display module in the embodiment.

[0079] Specifically, the display module of the display segment a specifically includes the display functional layer (the part of the display panel located in the display plane area), the first back plate 210 and the foam layer 220; wherein the display functional layer can include an OLED display functional layer, the first back plate 210 is attached to the back light surface of the display functional layer, and the foam layer 220 is attached to the side of the first back plate 210 away from the display functional layer, and the foam layer 220 is attached to the side of the support layer 110 away from the reinforcing layer 120.

[0080] Specifically, when the display module is a flat display module, the projection of the foam layer 220 on the display module 100 covers at least the display segment a, and when the display module is a four-curved surface display module, the buffer layer 20 coincides with the display segment a of the display module.

[0081] Specifically, the material of the support layer 110 can be copper foil or other metal materials with good heat dissipation effect.

[0082] Specifically, as shown in Figure 7 the second non-effective display part of the display functional layer is attached to the second back plate 130 after being bent, and the side of the second non-effective display part facing the effective display part is attached to the second back plate 130.

[0083] It should be noted that the upper side in the embodiment of the application is the light emitting side, and the lower side is the light emitting side. However, the upper and lower in the application do not have an absolute upper and lower relationship, and are only used for description in the Figure 7 .

[0084] According to the second aspect of the application, a display device is provided, which includes the display module 100 as above.

[0085] The display device in the embodiments of the present application includes the display module 100 described in the above embodiments, and thus has all the beneficial effects of the display module 100 described above, which will not be repeated here.

[0086] In the description of the present application, the terms "first", "second" are only for the purpose of description, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined with "first", "second" can explicitly or implicitly include one or more features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise specifically limited.

[0087] In the above embodiments, the description of each embodiment has its own emphasis, and the parts not described in detail in a certain embodiment can be referred to the related description of other embodiments.

[0088] The embodiments, implementation manners and related technical features of the present application can be combined or replaced with each other without conflict.

[0089] The above is only the preferred embodiments of the present application, and does not limit the present application in any form, but any simple modification, equivalent change and modification made to the above embodiments according to the technical essence of the present application without departing from the technical solution content of the present application, all still belong to the scope of the technical solution of the present application.

Claims

1. A display module, characterized in that: The display module includes: Support components; a display panel stacked on the support assembly; and a circuit board, one end of which is located on the display panel and is bound and connected to the display panel, and a gap is provided between the circuit board and the supporting assembly; Wherein, the support assembly is provided with a drainage groove, and the drainage groove is connected to the interval.

2. The display module according to claim 1, wherein: The support assembly comprises: a supporting layer, to which the other end of the circuit board is fixed; a reinforcement layer stacked on the support layer; and a back plate stacked on the reinforcement layer; Wherein, the reinforcement layer is provided with the drainage groove.

3. The display module according to claim 2, wherein: The drainage groove is arranged on a side of the reinforcement layer away from the display panel.

4. The display module according to claim 3, wherein: The reinforcement layer includes a body, a first connection layer and a second connection layer, the body is located between the first connection layer and the second connection layer, the first connection layer is located between the display panel and the body, and the second connection layer is located between the support layer and the reinforcement layer; Wherein, the second connecting layer is provided with the drainage groove.

5. The display module according to claim 4, wherein: The drainage groove penetrates the first connection layer along a thickness direction of the first connection layer.

6. The display module according to claim 2, wherein: The edge of the display panel and the edge of the back plate extend beyond the edge of the reinforcement layer to form a receiving space, wherein the drainage groove is connected to the interval through the receiving space.

7. The display module according to any one of claims 1 to 6, characterized in that: The drainage groove includes a plurality of first drainage grooves and a plurality of second drainage grooves arranged to intersect each other; Wherein, a plurality of the first drainage grooves extend along the first direction, and the drainage grooves are arranged at intervals along the second direction; a plurality of the second drainage grooves extend along the second direction, and the drainage grooves are arranged at intervals along the first direction.

8. The display module according to any one of claims 1 to 6, characterized in that: The width of the drainage groove is set to be the same as the depth of the drainage groove.

9. The display module according to any one of claims 1 to 6, characterized in that: The display module also includes a backing glue, which is connected to the circuit board to protect the binding area between the circuit board and the display panel; wherein the backing glue is spaced apart from the edge of the display panel so that the drainage groove is connected to the binding point between the circuit board and the display panel through the receiving space.

10. A display device, characterized in that: The display module comprises the display module as claimed in any one of claims 1 to 9.

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