Display module and display device

Abstract

The utility model discloses a display module and a display device. The display module comprises a display panel which comprises a light-emitting side and a non-light-emitting side which are oppositely arranged; the first end of the flexible circuit board is arranged on the light-emitting side, the second end of the flexible circuit board is bent to the non-light-emitting side, and the flexible circuit board is electrically connected with the display panel; the control module is arranged at the second end of the flexible circuit board, and the control module is located on the side, close to the non-light-emitting side of the display panel, of the flexible circuit board; the supporting structure is arranged on the side, close to the non-light-emitting side of the display panel, of the second end of the flexible circuit board, and the supporting structure is arranged on at least one side of the control module; the height of the supporting structure is larger than that of the control module in the direction parallel to the thickness of the display panel; the conductive layer is arranged on the non-light-emitting side of the display panel, and the conductive layer comprises at least one through hole; the orthographic projection of the through hole on the display panel covers the orthographic projection of the supporting structure on the display panel. According to the technical scheme provided by the embodiment of the utility model, the problem that abnormal sound is generated when the screen is pressed is solved.

Description

Technical Field

[0001] The utility model relates to the technical field of displays, and particularly relates to a display module and a display device. Background Art

[0002] With the continuous popularization of smart phones, mobile phones with touch screens have occupied the vast majority of the market share, and the demand for touchable display modules has also been increasing continuously. In the existing display module, abnormal noises are likely to occur when pressing the screen or the like, which affects the use experience of the display module. Summary of the Utility Model

[0003] The utility model provides a display module and a display device to solve the problem of abnormal noises generated when pressing the screen.

[0004] According to one aspect of the utility model, a display module and a display device are provided, including:

[0005] A display panel, the display panel includes a light-emitting side and a non-light-emitting side arranged oppositely;

[0006] A flexible circuit board, the first end of the flexible circuit board is arranged on the light-emitting side, the second end of the flexible circuit board is bent to the non-light-emitting side, and the flexible circuit board is electrically connected to the display panel;

[0007] A control module, arranged at the second end of the flexible circuit board, and the control module is located on one side of the flexible circuit board close to the non-light-emitting side of the display panel;

[0008] A support structure, arranged on one side of the second end of the flexible circuit board close to the non-light-emitting side of the display panel, and the support structure is arranged on at least one side of the control module; along the direction parallel to the thickness of the display panel, the height of the support structure is greater than the height of the control module;

[0009] A conductive layer, arranged on the non-light-emitting side of the display panel, and the conductive layer includes at least one through hole;

[0010] The orthographic projection of the through hole on the display panel covers the orthographic projection of the support structure on the display panel.

[0011] Optionally, the display module further includes:

[0012] A buffer layer, arranged between the non-light-emitting side of the display panel and the conductive layer, and the buffer layer is used for buffering the force generated when the display panel is pressed;

[0013] The hardness of the buffer layer is less than the hardness of the conductive layer;

[0014] The hardness of the support structure is greater than that of the buffer layer.

[0015] Optionally, the material of the buffer layer includes foam;

[0016] The material of the support structure includes rigid foam;

[0017] The rigid foam includes foam with a polyurethane foam structure.

[0018] Optionally, along the thickness direction perpendicular to the display panel, the distance between the control module and the surface of the support structure on the side close to the control module is a first distance;

[0019] The distance between the conductive layer and the surface of the support structure on the side close to the conductive layer is a second distance;

[0020] The first distance is greater than or equal to the second distance.

[0021] Optionally, the support structure is arranged around the control module;

[0022] The shape of the orthographic projection of the support structure on the flexible circuit board includes a ring or a loop.

[0023] Optionally, the support structure includes at least two sub - support parts;

[0024] At least two of the sub - support parts are arranged on opposite sides of the control module.

[0025] Optionally, adjacent two of the sub - support parts are arranged at intervals or adjacent to each other.

[0026] Optionally, the shape of the orthographic projection of the sub - support part on the flexible circuit board includes a circle, an ellipse, a square, a rectangle, a semi - ring or a semi - I - shaped.

[0027] Optionally, the display module further includes: a housing; the housing is arranged on the side of the conductive layer away from the display panel;

[0028] The housing is provided with a convex part, the convex part is arranged on the side of the housing close to the display panel, the convex part is connected to the side of the second end of the flexible circuit board away from the conductive layer, and the convex part is used to support the flexible circuit board.

[0029] According to another aspect of the present invention, there is provided a display device, including: the display module of any embodiment.

[0030] In the technical solution provided by the embodiment of the present utility model, by providing through holes in the conductive layer, the support structure can pass through the conductive layer and be connected to the film layer outside the conductive layer, avoiding the direct connection between the support structure and the relatively hard conductive layer. When the display panel is pressed, it can avoid the debonding of the support structure caused by the force between the support structure and the relatively hard conductive layer, and further avoid the abnormal noise generated by the debonding of the support structure and the conductive layer, providing a better user experience.

[0031] It should be understood that the content described in this part is not intended to identify the key or important features of the embodiments of the present utility model, nor is it used to limit the scope of the present utility model. Other features of the present utility model will become easily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] In order to more clearly illustrate the technical solutions in the embodiments of the present utility model, the following will briefly introduce the drawings required for the description of the embodiments. Obviously, the following drawings are only some embodiments of the present utility model. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0033] Figure 1 is a schematic structural diagram of a display module provided by an embodiment of the present utility model;

[0034] Figure 2 is a schematic structural diagram of another display module provided by an embodiment of the present utility model;

[0035] Figure 3 is a cross-sectional view of a support structure provided by an embodiment of the present utility model;

[0036] Figure 4 is provided by an embodiment of the present utility model along Figure 2 a cross-sectional schematic diagram in the AA' direction;

[0037] Figure 5 is provided by an embodiment of the present utility model along another Figure 2 cross-sectional schematic diagram in the AA' direction;

[0038] Figure 6 is provided by an embodiment of the present utility model along yet another Figure 2 cross-sectional schematic diagram in the AA' direction;

[0039] Figure 7 is provided by an embodiment of the present utility model along yet another Figure 2 cross-sectional schematic diagram in the AA' direction;

[0040] Figure 8It is a schematic structural diagram of another display module provided according to an embodiment of the present invention. Detailed implementation manners

[0041] In order to enable those skilled in the art to better understand the solution of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0042] It should be noted that the terms "first", "second", etc. in the description and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects, and do not necessarily need to be used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances so that the embodiments of the present invention described herein can be implemented in an order different from those illustrated or described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units does not necessarily have to be limited to those steps or units clearly listed, but may include other steps or units not clearly listed or inherent to these processes, methods, products or devices.

[0043] An embodiment of the present invention provides a display module. Figure 1 It is a schematic structural diagram of a display module provided according to an embodiment of the present invention. Refer to Figure 1 , the display module includes: a display panel 1, a flexible printed circuit board 2, a control module 3, a support structure 4, and a conductive layer 5. The display panel 1 includes a light-emitting side 11 and a non-light-emitting side 12 which are oppositely arranged. The first end of the flexible printed circuit board 2 is disposed on the light-emitting side 11, the second end of the flexible printed circuit board 2 is bent to the non-light-emitting side 12, and the flexible printed circuit board 2 is electrically connected to the display panel 1. The control module 3 is disposed at the second end of the flexible printed circuit board 2, and the control module 3 is located on one side of the flexible printed circuit board 2 close to the non-light-emitting side 12 of the display panel 1. The support structure 4 is disposed on one side of the second end of the flexible printed circuit board 2 close to the non-light-emitting side 12 of the display panel 1, and the support structure 4 is disposed on at least one side of the control module 3; along the direction parallel to the thickness of the display panel 1, the height of the support structure 4 is greater than the height of the control module 3. The conductive layer 5 is disposed on the non-light-emitting side of the display panel 1, and the conductive layer 5 includes at least one through hole. The orthographic projection of the through hole on the display panel 1 covers the orthographic projection of the support structure 4 on the display panel 1.

[0044] Among them, the display module can adopt a COF (Chip On FPC, Chip on Flexible Printed Circuit) packaging method. The control signal of the control module 3 can be input into the display panel 1 through the flexible printed circuit board 2, so as to drive the display panel 1 to emit light. The control module 3 can include: an IC (integrated circuit) chip. The conductive layer 5 can be a grounding layer composed of a conductive material. Exemplarily, the conductive material can include a metal material, such as aluminum or copper, etc. The static electricity of the display module can be derived through the conductivity of the conductive layer 5, ensuring the safe operation of the display module.

[0045] A support structure 4 is arranged on at least one side of the control module 3. The height of the support structure 4 is higher than that of the control module 3. When the display panel 1 is pressed, the support structure 4 can prevent the control module 3 from being impacted, thereby avoiding damage to the control module 3.

[0046] The conductive layer 5 is arranged on the non-light-emitting side of the display panel 1. The conductive layer 5 includes at least one through hole. The conductive layer 5 is arranged between the display panel 1 and the flexible printed circuit board 2. By providing that the conductive layer 5 includes at least one through hole, the orthographic projection of the through hole on the display panel 1 covers the orthographic projection of the support structure 4 on the display panel 1, so that the support structure 4 can penetrate through the through hole of the conductive layer 5, avoiding direct contact between the support structure 4 and the conductive layer 5.

[0047] In the prior art, generally one end of the support structure is connected to the flexible printed circuit board 2, and the other end is connected to the conductive layer 5. Since the conductive layer 5 is generally made of a metal material and its material is relatively hard, the conductive layer 5 has poor compression performance. When the display panel 1 is pressed down, the connection position between the conductive layer 5 and the support structure 4 is likely to cause delamination, thereby generating abnormal noises.

[0048] In order to avoid the generation of abnormal noises at the connection position between the support structure 4 and the conductive layer 5 when the display panel 1 is pressed, in the embodiment of the present invention, through holes are provided at the connection position between the conductive layer 5 and the support structure 4. The orthographic projection of the through hole on the display panel 1 covers the orthographic projection of the support structure 4 on the display panel 1. Compared with the prior art, the support structure 4 provided in the embodiment of the present invention can directly pass through the conductive layer 5 and be connected to the display panel 1.

[0049] Since the display panel 1 is a touch display screen, the hardness of its non-light-emitting side 12 is lower than that of the conductive layer 5, and its compression performance is better than that of the conductive layer 5. Therefore, when the display panel 1 is pressed down, delamination is not likely to occur, thereby reducing the occurrence of abnormal noises.

[0050] In the technical solution provided by the embodiment of the present utility model, by providing through holes in the conductive layer 5, the support structure 4 can pass through the conductive layer 5 and be connected to the film layer outside the conductive layer 5, avoiding the direct connection between the support structure 4 and the relatively hard conductive layer 5. When the display panel 1 is pressed, it is avoided that the support structure 4 is debonded due to the force between the support structure 4 and the relatively hard conductive layer 5, and further, the abnormal noise caused by the debonding of the support structure 4 and the conductive layer 5 is avoided, providing a better user experience.

[0051] Figure 2 This is a schematic structural diagram of another display module provided by the embodiment of the present utility model. Referring to Figure 2 , on the basis of the above embodiments, optionally, the display module further includes: a buffer layer 6. The buffer layer 6 is disposed between the non-light-emitting side 12 of the display panel 1 and the conductive layer 5. The buffer layer 6 is used to buffer the force generated when the display panel 1 is pressed. The hardness of the buffer layer 6 is less than that of the conductive layer 5; the hardness of the support structure 4 is greater than that of the buffer layer 6.

[0052] Among them, the buffer layer 6 is disposed between the non-light-emitting side 12 of the display panel 1 and the conductive layer 5. The relatively soft buffer layer 6 is used to reduce the impact on the display panel 1 when the display panel 1 is pressed. By providing the buffer layer 6 between the display panel 1 and the conductive layer 5, it can be prevented that the display panel 1 is damaged due to excessive pressure when pressed. The support structure 4 can pass through the conductive layer 5 through a through hole and be directly connected to the buffer layer 6. Since the hardness of the buffer layer 6 is small, the buffer layer 6 has good elasticity and good compression performance. When the display panel 1 is pressed, the force generated during pressing can be buffered by the buffer layer 6, so that the connection position between the support structure 4 and the buffer layer 6 is subjected to less force. Moreover, the material of the buffer layer 6 is relatively soft, has good sound absorption effect, and is not easily debonded.

[0053] Figure 3 This is a cross-sectional view of a support structure provided by the embodiment of the present utility model. Referring to Figure 3 , on the basis of the above embodiments, optionally, the material of the buffer layer 6 may include foam; the material of the support structure 4 includes rigid foam; the rigid foam may include: foam with a polyurethane foam structure.

[0054] Among them, one side of the support structure 4 and the second end of the flexible circuit board 2 can be bonded by glue, and the other side of the support structure 4 and the buffer layer 6 are bonded by glue. Exemplarily, double-sided adhesive 41 can be provided on opposite sides of the support structure 4, and through the double-sided adhesive 41, one side of the support structure 4 can be connected to the flexible circuit board 2, and the other side of the support structure 4 can be connected to the buffer layer 6.

[0055] Compared with the plastic support structure 4 provided by the prior art, in the embodiment of the present invention, the support structure 4 is set as a rigid foam, which has better sound absorption effect and compressibility. The foam of the polyurethane foam structure is a rigid foam, and its hardness is greater than that of the foam of the buffer layer 6. With this setting, the rigid foam of the support structure 4 can not only play a supporting role, but also buffer the force generated when the display panel 1 is pressed through the buffer layer 6 and the support structure 4 together. Since the hardness of both the foam and the rigid foam is less than that of the plastic support structure 4 of the prior art, the bonding strength is more reliable when the foam and the rigid foam are bonded. In addition, when the foam contacts the rigid foam, the sound waves will be absorbed by each other. Therefore, through this setting method, the foam and the rigid foam are bonded reliably, not easily delaminated, and no abnormal noise is generated easily when the display panel 1 is pressed.

[0056] Continue to refer to Figure 2 , based on the above embodiments, optionally, along the thickness direction perpendicular to the display panel 1, the distance between the control module 3 and the surface of the support structure 4 close to the control module 3 is a first distance D1. The distance between the conductive layer 5 and the surface of the support structure 4 close to the conductive layer 5 is a second distance D2; the first distance D1 is greater than or equal to the second distance D2.

[0057] Among them, the rigid foam used in the support structure 4 will deform when being extruded. By reserving the first distance D1 between the control module 3 and the support structure 4, contact with the control module 3 can be avoided when the support structure 4 is extruded and deformed, improving the reliability of the operation of the control module 3. If the support structure 4 contacts the conductive layer 5 due to deformation, it will not have a great impact on the display module. Therefore, setting the second distance D2 smaller than the first distance D1 is equivalent to reducing the size of the through hole of the conductive layer 5, ensuring a better conductive effect.

[0058] Figure 4 A cross-sectional view along the Figure 2 AA' direction provided by the embodiment of the present invention. Figure 5 Another cross-sectional view along the Figure 2 AA' direction provided by the embodiment of the present invention. Combining Figure 4 and Figure 5 , based on the above embodiments, optionally, the support structure 4 is arranged around the control module 3; the shape of the orthographic projection of the support structure 4 on the flexible circuit board 2 includes a ring or a loop.

[0059] Among them, Figure 4 exemplarily shows a loop-shaped support structure 4, Figure 5Exemplarily, an annular support structure 4 is shown. The support structure 4 surrounds the control module 3 through an annular or loop-shaped structure, and has high stability. When the display panel 1 is pressed, the annular or loop-shaped structure has good support performance and can play a better protective role for the control module 3.

[0060] Figure 6 Another cross-sectional schematic diagram along the Figure 2 AA' direction provided by the embodiment of the present invention is shown. Referring to Figure 6 , on the basis of the above embodiments, optionally, the support structure 4 includes at least two sub-support parts 41; at least two sub-support parts 41 are arranged on opposite sides of the control module 3. Among them, Figure 6 Exemplarily, the situation where two sub-support parts 41 are arranged on opposite sides of the control module 3 is shown. This arrangement method can also play a better support role, and this arrangement method can save the usage amount of rigid foam and has a lower cost.

[0061] Continuing to refer to Figure 6 , on the basis of the above embodiments, optionally, two adjacent sub-support parts 41 are arranged at intervals or adjacent to each other.

[0062] Among them, both the arrangement methods of being at intervals or adjacent to each other have good stability, and different sub-support parts 41 can be arranged according to the size and height of the control module 3.

[0063] Figure 7 Another cross-sectional schematic diagram along the Figure 2 AA' direction provided by the embodiment of the present invention is shown. Referring to Figure 7 , on the basis of the above embodiments, optionally, the shape of the sub-support part 41 includes a circle, an ellipse, a square, a rectangle, a semi-annular shape or a semi-I-shaped shape.

[0064] Among them, Figure 7 Exemplarily, the situation of four sub-support parts 41 is shown, and each sub-support part 41 is set as a circle. The sub-support part 41 provided by the embodiment of the present invention can select different shapes according to specific requirements. In practical applications, different shapes and quantities can be set according to actual requirements.

[0065] Figure 8 Another structural schematic diagram of the display module provided by the embodiment of the present invention is shown. Referring to Figure 8 , on the basis of the above embodiments, optionally, the display module further includes: a housing 7; the housing 7 is arranged on the side of the conductive layer 5 away from the display panel 1; the housing 7 is provided with a protrusion 71, the protrusion 71 is arranged on the side of the housing 7 close to the display panel 1, and the protrusion 71 is connected to the side of the second end of the flexible circuit board 2 away from the conductive layer 5, and the protrusion 71 is used to support the flexible circuit board 2.

[0066] Among them, the shell 7 is the external protection structure of the display module, and a protrusion 71 is provided in the shell 7 for supporting the second end of the flexible circuit board 2. In the prior art, because the conductive layer 5 is directly connected to the support structure 4, and both the conductive layer 5 and the support structure 4 have high hardness, when the display panel 1 is pressed, the display panel 1 will drive the support structure 4 to hit the protrusion 71. In order to prevent the display panel 1 from being damaged due to the impact, a certain gap needs to be provided between the protrusion 71 and the flexible circuit board 2 to protect the display panel 1. However, if the pressure on the display panel 1 is large, the support structure 4 will still hit the protrusion 71, generating a certain vibration sound, affecting the user experience.

[0067] The technical solution provided by the embodiment of the utility model sets the material of the support structure 4 to hard foam, and directly connects the support structure 4 to the buffer layer 6, because both are relatively soft materials, they can buffer each other when subjected to force. Therefore, compared with the prior art, the display module provided by this embodiment does not need to reserve a gap between the protrusion 71 and the flexible circuit board 2. This arrangement avoids the impact of the flexible circuit board 2 on the protrusion 71 when the display panel 1 is pressed, thereby avoiding the sound caused by the impact during the use of the display module, and further reducing the abnormal sound of the display module.

[0068] An embodiment of the present invention further provides a display device, including: a display module provided by any embodiment of the present invention, which has the same beneficial effects as the display module provided by any of the above embodiments, and will not be described in detail here.

[0069] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be performed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0070] The above specific implementations do not constitute a limitation on the protection scope of the present utility model. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present utility model shall be included in the protection scope of the present utility model.

Claims

1. A display module, characterized in that: include: A display panel, the display panel comprising a light-emitting side and a non-light-emitting side arranged opposite to each other; A flexible circuit board, wherein a first end of the flexible circuit board is disposed on the light-emitting side, a second end of the flexible circuit board is bent to the non-light-emitting side, and the flexible circuit board is electrically connected to the display panel; A control module, disposed at the second end of the flexible circuit board, the control module being located on a side of the flexible circuit board close to the non-light emitting side of the display panel; A support structure is arranged on a side of the second end of the flexible circuit board close to the non-light-emitting side of the display panel, and the support structure is arranged on at least one side of the control module; along a direction parallel to the thickness of the display panel, the height of the support structure is greater than the height of the control module; A conductive layer, disposed on the non-light-emitting side of the display panel, wherein the conductive layer comprises at least one through hole; The orthographic projection of the through hole on the display panel covers the orthographic projection of the supporting structure on the display panel.

2. The display module according to claim 1, characterized in that: Also includes: a buffer layer, disposed between the non-light-emitting side of the display panel and the conductive layer, the buffer layer being used to buffer a force generated when the display panel is pressed; The hardness of the buffer layer is less than the hardness of the conductive layer; The hardness of the supporting structure is greater than the hardness of the buffer layer.

3. The display module according to claim 2, characterized in that: The material of the buffer layer includes foam; The material of the support structure includes hard foam; The hard foam includes foam with a polyurethane foam structure.

4. The display module according to claim 2 or 3, characterized in that: Along a thickness direction perpendicular to the display panel, a distance between the control module and a surface of the support structure on a side close to the control module is a first distance; The distance between the conductive layer and the surface of the support structure on the side close to the conductive layer is a second distance; The first distance is greater than or equal to the second distance.

5. The display module according to any one of claims 1 to 3, characterized in that: The support structure is arranged around the control module; The shape of the support structure on the flexible circuit board as an orthographic projection includes a ring shape or a circular shape.

6. The display module according to any one of claims 1 to 3, characterized in that: The support structure comprises at least two sub-support parts; At least two of the sub-support portions are disposed on two opposite sides of the control module.

7. The display module according to claim 6, characterized in that: Two adjacent sub-supporting parts are arranged spaced apart or adjacent to each other.

8. The display module according to claim 6, characterized in that: The shape of the orthographic projection of the sub-support portion on the flexible circuit board includes a circle, an ellipse, a square, a rectangle, a semi-ring or a semi-I-shape.

9. The display module according to any one of claims 1 to 3, characterized in that: The display module further includes: a housing; the housing is arranged on a side of the conductive layer away from the display panel; The housing is provided with a protrusion, which is provided on a side of the housing close to the display panel, connected to a side of the second end of the flexible circuit board away from the conductive layer, and used to support the flexible circuit board.

10. A display device, characterized in that: include: The display module according to any one of claims 1 to 9.

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