Display module, electronic equipment and manufacturing method of display module

Abstract

The invention provides a display module, electronic equipment and a manufacturing method of the display module, relates to the technical field of electronic equipment, and is used for solving the problem that poor display or damage is easy to occur on the periphery of an opening in an existing display module. The display module comprises a display panel, a back plate and a supporting piece. The display panel is provided with a first through hole. The back plate is attached to the display panel, a second through hole is formed in the back plate, the second through hole and the first through hole are oppositely arranged, and the cross section area of the second through hole is larger than that of the first through hole. The second through hole is filled with the supporting piece, a third through hole is formed in the supporting piece, and the third through hole is opposite to the first through hole. The supporting piece can play a certain role in supporting the peripheral part of the first through hole in the display panel (supporting in the thickness direction of the display module), equivalently, the area of the suspended part of the display panel is reduced, and then the risk of poor display or damage when the display panel is impacted can be reduced.

Description

Technical Field

[0001] This application relates to the field of electronic device technology, and in particular to a display module, an electronic device, and a method for manufacturing a display module. Background Technology

[0002] With the development of electronic devices, people are using front-facing cameras more and more frequently, such as for video calls and selfies. Front-facing cameras are generally located below the display module, and to allow light to enter the camera, an opening needs to be made on the display module at a position opposite the camera.

[0003] However, due to manufacturing tolerances, existing display modules are prone to display defects or damage around the openings, resulting in a poor user experience. Summary of the Invention

[0004] This application provides a display module, an electronic device, and a method for manufacturing the display module, which solves the problem that display defects or damage easily occur around the openings in existing display modules.

[0005] To achieve the above objectives, the embodiments of this application adopt the following technical solutions:

[0006] In a first aspect, embodiments of this application provide a display module, including a display panel, a back plate, and a support member.

[0007] The display panel has a first through-hole. A back panel is attached to the display panel and has a second through-hole opposite to the first through-hole, with the second through-hole having a larger cross-sectional area than the first through-hole. A support member fills the second through-hole and has a third through-hole opposite to the first through-hole.

[0008] The display module provided in the first aspect of this application uses a support member filled in a second through hole on the back panel, and the support member has a third through hole opposite to the first through hole. In this way, the support member can provide a certain degree of support for the part around the first through hole on the display panel (supporting in the thickness direction of the display module) without obstructing the front camera of the electronic device. This is equivalent to reducing the area of ​​the unsupported part of the display panel, thereby reducing the risk of display defects or damage (such as black spots, image distortion, etc.) caused by deformation around the first through hole when the display panel is subjected to impact.

[0009] With reference to the first aspect, in a possible implementation manner, the third through hole is coaxially arranged with the first through hole. In this way, when the display panel is impacted at the first through hole, a part of the impact force can be evenly transmitted and dispersed to the support, so that the internal stress of the display panel itself is reduced, and the support can also be uniformly stressed.

[0010] With reference to the first aspect, in another possible implementation manner, a cross-sectional area of the third through hole is equal to a cross-sectional area of the first through hole. In this way, on one hand, the support can be completely fitted with the periphery of the first through hole of the display panel, that is, the support can support the periphery of the first through hole of the display panel in 360 degrees, and there is no part of the display panel in a suspended state, so that when the display panel is impacted at the first through hole, the periphery of the first through hole is not easily deformed or damaged.

[0011] On the other hand, when the display module is manufactured, after the display panel and the back plate filled with the support are assembled, the first through hole and the third through hole can be formed at one time by one machining process (for example, laser drilling), which is equivalent to making the first through hole also penetrate the support when the first through hole is drilled, so that the coaxiality of the first through hole and the third through hole can be ensured, and the influence of tolerance accumulation caused by separately drilling holes in the display panel and the support and then assembling is avoided.

[0012] With reference to the first aspect, in another possible implementation manner, in the thickness direction of the display module, the thickness of the support is greater than the thickness of the back plate. In this way, the structural strength of the support is higher, and the support is not easily deformed when impacted, so that the display panel can be more stably supported.

[0013] With reference to the first aspect, in another possible implementation manner, the support includes a first part and a second part, the first part is partially filled in the second through hole, and the third through hole is arranged on the first part. The second part is located on one side of the back plate and is fitted with the surface of the back plate. In this way, after the second through hole is filled with the support, the contact area between the support and the back plate is no longer only the inner wall area of the second through hole (that is, the contact area between the first part and the second through hole), but also includes the contact area between the second part and the surface of the back plate. That is, the contact area between the support and the back plate is increased by the above structural design, and when the support and the back plate are connected by bonding or other manners, the connection between the support and the back plate can be more firm, and the risk that the support is detached from the back plate when the display module is impacted can be reduced.

[0014] With reference to the first aspect, in a possible implementation manner, the second portion is provided in plurality, and the plurality of second portions are circumferentially spaced apart around the first portion. In this way, by providing the plurality of second portions abutting the surface of the back plate, the contact area between the support and the back plate can be further increased, thereby enhancing the firmness of the connection between the support and the back plate.

[0015] With reference to the first aspect, in a possible implementation manner, the second portion extends around the first portion. In this way, by extending the second portion around the first portion, when the periphery of the first through hole on the display panel is impacted, the impact force transmitted by the display panel to the support can be evenly transmitted and dispersed to the back plate through the second portion, thereby reducing the risk of rupture or falling of the support due to local stress concentration, and the risk of deformation of the back plate due to local stress concentration.

[0016] With reference to the first aspect, in a possible implementation manner, the second portion is located on the surface of the back plate facing away from the display panel. In this way, by arranging the second portion on the surface of the back plate facing away from the display panel, the second portion will not affect the abutting assembly of the display panel and the back plate.

[0017] With reference to the first aspect, in a possible implementation manner, the second portion is located on the surface of the back plate facing away from the display panel. In this way, by arranging the second portion on the surface of the back plate facing away from the display panel, the second portion will not affect the abutting assembly of the display panel and the back plate.

[0018] With reference to the first aspect, in a possible implementation manner, the first through hole and the second through hole are both circular holes. Since the user can observe the first through hole when using the electronic device, the first through hole and the second through hole are both designed as circular holes, which are more beautiful and coordinated than other shapes, and are easy to process.

[0019] With reference to the first aspect, in a possible implementation manner, the difference between the diameters of the first through hole and the second through hole is greater than or equal to 0.6 mm.

[0020] With reference to the first aspect, in a possible implementation manner, the display module further comprises a light-transmitting cover plate abutting the surface of the display panel facing away from the back plate. When the display module is installed on the electronic device, the light-transmitting cover plate is located at the outermost side of the display module, which can protect the display panel to a certain extent and avoid the display panel being directly scratched or impacted by external objects.

[0021] With reference to the first aspect, in a possible implementation manner, the display module further comprises a polarizer, the polarizer is arranged between the light-transmitting cover plate and the display panel, and the polarizer is provided with a fourth through hole opposite to the first through hole. The polarizer can enhance the contrast and color performance of the display module, and can reduce the reflection and glare of external light to a certain extent, thereby improving the visibility of the display module.

[0022] With reference to the first aspect, in a possible implementation manner, the back plate is made of metal. The material of the back plate can be aluminum alloy, stainless steel, titanium alloy, or other high-strength metals, so as to serve as the main structure of the display module and provide stable support for other components of the display module.

[0023] With reference to the first aspect, in a possible implementation manner, the support member is made of synthetic resin. The synthetic resin has high strength and light weight, thereby facilitating the light weight of the electronic device. In addition, the synthetic resin has good plasticity, and can be directly filled into the second through hole on the back plate through an injection molding process to form the support member, thereby facilitating the simplification of the process and the reduction of production cost.

[0024] With reference to the first aspect, in a possible implementation manner, the support member is made of transparent material. In this way, the support member is made of transparent material, and when the display panel and the back plate filled with the support member are assembled, the positioning marks around the first through hole on the display panel can be observed through the support member, so as to ensure that the assembly tolerance is within the allowable range.

[0025] The second aspect of the present application provides an electronic device, which comprises a housing, a main board, a front camera module and the display module of the first aspect. The main board and the front camera module are arranged in the housing, the display module is mounted on the housing, the display module and the front camera module are electrically connected to the main board, and the light entrance end of the front camera module extends into the first through hole through the third through hole.

[0026] It can be understood that the electronic device provided by the second aspect and any possible implementation manner thereof can achieve the beneficial effects as described in the first aspect and any possible implementation manner thereof, which will not be described herein again.

[0027] The third aspect of the present application provides a manufacturing method of a display module, which comprises the following steps:

[0028] A second through hole is formed on the back plate, and a support member is filled in the second through hole;

[0029] The back plate and the display panel are attached;

[0030] A first through hole is formed on the display panel, and the first through hole penetrates the support member.

[0031] In conjunction with the third aspect, in one possible implementation, the support member includes a first part and a second part, the first part partially filling the second through hole, and when the first through hole is opened, the first through hole also penetrates the first part; the second part is attached to the surface of the back plate away from the display panel.

[0032] In conjunction with the third aspect, in another possible implementation, after the first through hole is opened on the display panel and the first through hole passes through the support member, the above method further includes: attaching a light-transmitting cover plate to the side of the display panel away from the back plate.

[0033] In conjunction with the third aspect, in another possible implementation, the method further includes, before bonding the back panel to the display panel, bonding a polarizer to the surface of the display panel opposite to the back panel.

[0034] In conjunction with the third aspect, in another possible implementation, the first through hole is created using laser drilling.

[0035] Understandably, the beneficial effects that the manufacturing method described in the third aspect and any possible implementation thereof can be referenced to the beneficial effects in the first aspect and any possible implementation thereof, and will not be repeated here. Attached Figure Description

[0036] Figure 1 A structural diagram of an electronic device provided in an embodiment of this application;

[0037] Figure 2 for Figure 1 A front view of the electronic devices in their unfolded state;

[0038] Figure 3 for Figure 1 A front view of the electronic devices in a folded state;

[0039] Figure 4 This is a cross-sectional schematic diagram of a display module provided in an embodiment of this application;

[0040] Figure 5 A top view showing that the first through hole on the display panel and the second through hole on the back panel are not on the same axis;

[0041] Figure 6 This is a cross-sectional schematic diagram of another display module provided in an embodiment of this application;

[0042] Figure 7 for Figure 6 The diagram shows a top view of the relative positions of the first and second through holes on the display module.

[0043] Figure 8 for Figure 6A cross-sectional view of a display module in the first embodiment of the present application;

[0044] Figure 9 An exploded view of a display module in the first embodiment of the present application;

[0045] Figure 10 A cross-sectional view of a display module in the first embodiment of the present application; Figure 9 A cross-sectional view of a display module in the first embodiment of the present application;

[0046] Figure 11 A cross-sectional view of a display module in the first embodiment of the present application;

[0047] Figure 12 A cross-sectional view of a display module in the first embodiment of the present application;

[0048] Figure 13 A cross-sectional view of a display module in the first embodiment of the present application;

[0049] Figure 14 A cross-sectional view of a display module in the first embodiment of the present application;

[0050] Figure 15 A cross-sectional view of a display module in the first embodiment of the present application;

[0051] Figure 16 A cross-sectional view of a display module in the first embodiment of the present application; Figure 15 A cross-sectional view of a display module in the first embodiment of the present application;

[0052] Figure 17 A cross-sectional view of a display module in the first embodiment of the present application;

[0053] Figure 18 A cross-sectional view of a display module in the first embodiment of the present application; Figure 17 A cross-sectional view of a display module in the first embodiment of the present application;

[0054] Figure 19 A cross-sectional view of a display module in the first embodiment of the present application;

[0055] Figure 20 A cross-sectional view of a display module in the first embodiment of the present application; Figure 19 A cross-sectional view of a display module in the first embodiment of the present application;

[0056] Figure 21 An exploded view of a display module in the first embodiment of the present application;

[0057] Figure 22 A cross-sectional view of a display module in the first embodiment of the present application; Figure 21 A cross-sectional view of a display module in the first embodiment of the present application;

[0058] Figure 23 A cross-sectional view of a display module in the first embodiment of the present application;

[0059] Figure 24 For Figure 21 Manufacturing process flow of display module Figure 1 ;

[0060] Figure 1 For Figure 1 Manufacturing process flow of display module Figure 2 ;

[0061] Figure 2 For Figure 2 Manufacturing process flow of display module Figure 1 ;

[0062] Figure 1 For Figure 2 Manufacturing process flow of display module Figure 1 .

[0063] Reference signs:

[0064] 01, electronic device; 10, display module; 10a, first area; 10b, second area; 10c, third area; 11, light-transmitting cover plate; 12, display panel; 120, first through hole; 13, back plate; 130, second through hole; 14, support piece; 140, third through hole; 141, first part; 142, second part; 15, polarizer; 150, fourth through hole; 20, shell assembly; 21, hinge mechanism; 22, middle frame; 22a, first middle frame; 22b, second middle frame; 210, first bonding surface; 220, second bonding surface; 230, third bonding surface; 30, front camera module; 40, mainboard. DETAILED DESCRIPTION

[0065] In order to make the purpose, technical scheme and advantages of the application clearer, the application will be further described in detail below with examples. It should be understood that the specific examples described herein are only used to explain the application and not to limit the application.

[0066] In the description of the application, it should be clear that the terms "vertical", "lateral", "longitudinal", "front", "back", "left", "right", "up", "down", "horizontal" and the like indicate the orientation or positional relationship shown in the drawings, and are only used to facilitate the description of the application, and do not mean that the device or element referred to must have a particular orientation or position, and therefore cannot be understood as limiting the application. The "number" cannot be understood as limiting the application.

[0067] In the description of the present application, it should be noted that, unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connecting" should be understood in a broad sense, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through intermediate medium. 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.

[0068] The embodiment of the present application provides an electronic device 01. Specifically, the electronic device 01 can be a portable electronic device or other types of electronic devices. For example, the electronic device can be a mobile phone, a tablet personal computer, a personal digital assistant (PDA), a wearable device, etc. The display screen of the electronic device can be a folding screen or a straight screen. For the convenience of description, the following examples are taken as a folding screen mobile phone. The folding screen mobile phone can be a mobile phone with an outer folding display screen or a mobile phone with an inner folding display screen. In the following, the electronic device 01 is taken as a mobile phone with an inner folding display screen for illustration.

[0069] Specifically, please refer to Figure 2 As shown in the figure, Figure 3 The structure diagram of the electronic device 01 provided by the embodiment of the present application is shown. The electronic device 01 can include a housing assembly 20, a front camera 30, a mainboard 40 and a foldable display module 10. The display module 10 is supported and attached to the housing assembly 20. The housing assembly 20 can drive the display module 10 to rotate between the unfolded state and the folded state. The front camera module 30 and the mainboard 40 are located in the housing assembly 20, and the front camera module 30 and the display module 10 are electrically connected to the mainboard 40 respectively.

[0070] It can be understood that, Figure 3 And Figure 1 In the figures, only some components included in the folding screen terminal 01 are shown schematically. The actual shape, actual size, actual position and actual structure of the components are not limited by the structure shown in the figures.

[0071] For the description of the following embodiments, an XYZ coordinate system is established, and it is defined that when the electronic device 01 is in the unfolded state, the width direction of the electronic device 01 is the X-axis direction, the length direction of the electronic device 01 is the Y-axis direction, and the thickness direction of the electronic device 01 is the Z-axis direction. It should be noted that the coordinate system of the electronic device 01 can be flexibly set according to actual needs. The present application only gives an example, and cannot be considered as a special limitation to the present application.

[0072] The shell assembly 20 is used to protect the components inside the electronic device 01. The shell assembly 20 can include a hinge mechanism 21 and a middle frame 22. Among them, the middle frame 22 is provided with two, which are the first middle frame 22a and the second middle frame 22b, and the hinge mechanism 21 is connected between the first middle frame 22a and the second middle frame 22b. The relative rotation between the first middle frame 22a and the second middle frame 22b is realized through the hinge mechanism 21, so as to realize the rotation switching between the unfolded state and the folded state of the electronic device 01.

[0073] The display module 10 is used to display images, videos, etc. The display module 10 can be divided into a first area 10a, a second area 10b and a third area 10c, and the third area 10c is arranged between the first area 10a and the second area 10b. The third area 10c can be bent and deformed. When the electronic device 01 is in the folded state, the third area 10c of the display module 10 is bent, and the first area 10a and the second area 10b are arranged opposite to each other. When the electronic device 01 is in the unfolded state, the third area 10c of the display module 10 is flattened, and at this time, the first display area 10a, the second display area 10b and the third display area 10c are in the same plane.

[0074] Among them, please refer to Figure 1 , Figure 4 , Figure 4 , the front view (along the positive direction of the Y axis) of the electronic device 01 in the unfolded state. The first middle frame 22a has a first bonding surface 210, and the first area 10a of the display module 10 is supported and bonded on the first bonding surface 210. The second middle frame 22b has a second bonding surface 220, and the second area 10b of the display module 10 is supported and bonded on the second bonding surface 220. The hinge mechanism 21 has a third bonding surface 230, and the third area 10c of the display module 10 is supported and bonded on the third bonding surface 230. The first middle frame 22a and the second middle frame 22b are rotationally connected through the hinge mechanism 21, so that the electronic device 01 can be switched between the unfolded state and the folded state.

[0075] In the case that the electronic device 01 is in the unfolded state, please continue to refer to Figure 1 and Figure 4 , Figure 5 and Figure 5The electronic device 01 in the above-mentioned state is in an unfolded state. The first bonding surface 210, the second bonding surface 220, and the third bonding surface 230 are in the same plane, so that the display module 10 can be completely unfolded, that is, the first region 10a, the second region 10b, and the third region 10c of the display module 10 are in the same plane, and the flatness of the display module 10 can be ensured. In this state, large-screen display of the electronic device 01 can be realized, and better user experience can be brought to the user.

[0076] In the case where the electronic device 01 in the above-mentioned state is in a folded state, please refer to Figure 5 , Figure 6 , Figure 7 The electronic device 01 in the above-mentioned state is in a folded state. The first region 10a and the second region 10b of the display module 10 are opposite to each other, and the third region 10c is folded. The shell assembly 20 is protected outside the display module 10, that is, the display module 10 is between the first middle frame 22a and the second middle frame 22b of the shell assembly 20. In this state, the display module 10 is invisible to the user, so as to prevent the display module 10 from being scratched or damaged, thereby effectively protecting the display module 10. For example, when the mobile phone is not used, the electronic device 01 can be folded and placed to avoid damage to the display module 10.

[0077] Please refer to Figure 6 , the mainboard 40 is used to arrange electronic devices of the electronic device 01 and realize electrical connection between the electronic devices. For example, the electronic devices can be a control chip (such as a system on chip, SOC), a graphics processing unit (GPU), a universal flash storage (UFS), a receiver, a flash module, and the display module 10, the front camera module 30, and the like.

[0078] On the basis of the above, please refer to Figure 7 , Figure 6 is a cross-sectional (parallel to the XZ plane) schematic view of a display module 10 provided in an embodiment of the present application. The display module 10 can include a light-transmitting cover plate 11, a display panel 12, and a back plate 13, wherein the light-transmitting cover plate 11 and the back plate 13 are respectively attached to two side surfaces of the display panel 12, and the light-transmitting cover plate 11 and the display panel 12, and the back plate 13 and the display panel 12 can be respectively fixed by optical adhesive (OCA, Optically Clear Adhesive) bonding.

[0079] The display panel 12 can be an organic light-emitting diode (OLED) display screen, an active-matrix organic light-emitting diode (AMOLED) display panel, a mini light-emitting diode display screen, a micro light-emitting diode display panel, a micro organic light-emitting diode display panel, a quantum dot light-emitting diode (QLED) display panel, a liquid crystal display (LCD), or the like.

[0080] The light-transmitting cover plate 11 can be a common cover plate. When the display module 10 is installed on the electronic device 01, the light-transmitting cover plate 11 is located at the outermost side of the display module 10, and can protect the display panel 12 to some extent, avoiding the display panel 12 from being directly scratched or impacted by external objects. Alternatively, the light-transmitting cover plate 11 can also be a cover plate with a touch function, so that the electronic device 01 has a touch function, thereby making the user use more convenient. Therefore, the specific material of the light-transmitting cover plate 11 is not specially limited in the present application.

[0081] The back plate 13 can be made of a metal with high strength, such as titanium alloy, stainless steel, aluminum alloy, etc., to serve as the main structure of the entire display module 10 and provide stable support for other components of the display module 10.

[0082] The front camera module 30 is used to realize video or image shooting. The front camera module 30 can be arranged in the first middle frame 22a or the second middle frame 22b, and the present application does not make special limitation thereon. In the following, the front camera module 30 arranged in the first middle frame 22a is taken as an example for description. Correspondingly, in order to more intuitively understand the structure of the display module 10 provided by the present application, the cross-sectional view and the structure explosion view of the display module 10 in the following examples are all taken as examples for description with the first area 10a of the display module 10.

[0083] The front camera module 30 can be arranged in the first middle frame 22a in the following manner. Figure 7The front camera module 30 is arranged at a middle position of the upper edge of the first area 10a of the display module 10. Alternatively, the front camera module 30 can also be arranged at a top corner position of the first area 10a of the display module 10, which is not particularly limited in the present application.

[0084] To enable external light to enter the front camera module 30, please continue to refer to Figure 8 As shown, the first through hole 120 is formed on the display panel 12, the second through hole 130 is formed on the back plate 13, and the light entrance end of the front camera module 30 and the second through hole 130 are arranged opposite to the first through hole 120, so that external light can enter the front camera module 30 in sequence through the light-transmitting cover plate 11, the first through hole 120 and the second through hole 130.

[0085] It can be understood that in the cross section parallel to the display module 10 in the unfolded state (parallel to the XZ plane), the cross-sectional shape of the first through hole 120 and the second through hole 130 can be circular, oval, rectangular, triangular, or other regular or irregular shapes, which is not particularly limited in the present application.

[0086] For ease of understanding, the following is an example of taking the first through hole 120 and the second through hole 130 as circular holes. The user can directly observe the first through hole 120 during use of the electronic device 0101. Circular holes are more aesthetically pleasing and easier to process than holes of other shapes.

[0087] Since the display module 10 is generally manufactured by first forming the first through hole 120 on the display panel 12 and the second through hole 130 on the back plate 13, and the diameter d1 of the first through hole 120 is required to be equal to the diameter d2 of the second through hole 130, and then the display panel 12 and the back plate 13 are assembled after the holes are formed. This causes the cumulative size tolerance of the holes and the assembly tolerance, resulting in a large coaxiality error of the first through hole 120 and the second through hole 130, please refer to Figure 8 As shown, Figure 6 The figure shows a top view (along the negative direction of the Z axis) of the first through hole 120 on the display panel 12 and the second through hole 130 on the back plate 13. That is, in the illustrated position, the axial offset distance L of the first through hole 120 and the second through hole 130 is large Figure 9 The black dot a is the axis of the first through hole 120, and the black dot b is the axis of the second through hole 130), at this time, in the Z axis direction, the back plate 13 will cause a certain obstruction to the light path of the front camera module 30, affecting normal shooting.

[0088] Based on the above reasons, in order to avoid the adverse effects caused by the coaxiality error of the first through hole 120 and the second through hole 130, please refer to Figure 10 andFigure 9 As shown in Figure 10 Another cross-sectional (parallel to the XZ plane) schematic view of the display module 10 provided by an embodiment of the present application is shown in Figure 9 As shown in Figure 10 A top view (in the negative direction of the Z axis) schematic view of the relative positions of the first through-hole 120 and the second through-hole 130 on the display module 10 is shown in Figure 11 In the black dot a, the axis of the first through-hole 120 is shown, and in the black dot b, the axis of the second through-hole 130 is shown.

[0089] When the hole is opened, the diameter d2 of the second through-hole 130 on the back plate 13 can be greater than the diameter d1 of the first through-hole 120 (for example, the difference between the diameters of the first through-hole 120 and the second through-hole 130 is greater than or equal to 0.6 mm), so that when the display panel 12 and the back plate 13 are assembled, it is only necessary to ensure that the first through-hole 120 and the second through-hole 130 completely overlap in the Z axis direction to avoid the case where the back plate 13 blocks the light path of the front camera module 30.

[0090] However, the above structure will cause the periphery of the first through-hole 120 on the display panel 12 to not be supported by the back plate 13 in the Z axis direction, that is, this part of the display panel 12 is in a suspended state, as shown in Figure 11 As shown in Figure 12 As shown in Figure 12 A cross-sectional (parallel to the XZ plane) schematic view of the deformation of the display panel 12 of the display module 10 at the first through-hole 120 is shown in. When the display module 10 is subjected to an impact force F in the negative direction of the Z axis, the periphery of the display panel 12 at the first through-hole 120 is prone to deformation (bending towards the back plate 13), which in turn causes display defects or damage (for example, black spots, image distortion, etc.).

[0091] To solve the above problem, an embodiment of the present application provides a display module 10, as shown in Figure 13 and Figure 13 As shown in Figure 13 An exploded view of the structure of a display module 10 provided by an embodiment of the present application is shown in Figure 14 As shown in Figure 14 A cross-sectional (parallel to the XZ plane) schematic view of the display module 10 is shown in.

[0092] The display module 10 can include a support 14, and the above-mentioned light-transmitting cover plate 11, display panel 12 and back plate 13 arranged in layers. The display panel 12 has a first through-hole 120 formed therein, and the back plate 13 has a second through-hole 130 formed therein opposite the first through-hole 120, and the diameter of the second through-hole 130 is greater than the diameter of the first through-hole 120. The support 14 is filled in the second through-hole 130, and the support 14 has a third through-hole 140 formed therein opposite the first through-hole 120.

[0093] It should be noted that the support 14 can be a non-metallic material with high strength, such as a synthetic resin material, for example, PC (polycarbonate) resin, PVC (polyvinyl chloride) resin, phenolic resin, etc. The synthetic resin has high strength and light weight, which can support the display panel 12 while facilitating the light weight of the electronic device 01. In addition, the synthetic resin has good plasticity and can be directly filled into the second through hole 130 on the back plate 13 to form the support 14, which is beneficial to simplify the process and reduce the production cost.

[0094] In this way, by filling the support 14 in the second through hole 130 on the back plate 13, and opening the third through hole 140 on the support 14 opposite to the first through hole 120. Thus, the support 14 can support at least part of the display panel 12 around the first through hole 120 without blocking the light path of the front camera of the electronic device 01, that is, supporting in the thickness direction (parallel to the Z axis) of the display module 10, which is equivalent to reducing the area of the suspended part of the display panel 12, and thus can reduce the risk of deformation of the display panel 12 around the first through hole 120 when impacted, resulting in display failure or damage (such as black spots, image distortion, etc.).

[0095] In some embodiments, please continue to refer to Figure 15 As shown, the third through hole 140 is coaxially arranged with the first through hole 120. In this way, when the display panel 12 is impacted at the first through hole 120, a part of the impact force can be evenly transmitted and dispersed to the support 14, so that the internal stress of the display panel 12 is reduced, and the support 14 can also be evenly stressed.

[0096] Further, please refer to Figure 16 As shown, Figure 15 Another cross section (parallel to the XZ plane) of the display module 10 provided by the embodiments of the present application is shown. In the cross section parallel to the XY plane, the cross-sectional area of the third through hole 140 is equal to the cross-sectional area of the first through hole 120, that is, the diameter d3 of the third through hole 140 is equal to the diameter d1 of the first through hole 120.

[0097] By this arrangement, on the one hand, the support 14 can be completely fitted with the periphery of the first through hole 120 on the display panel 12, that is, the support 14 can support the periphery of the first through hole 120 on the display panel 12 in 360° all directions, and there is no part of the display panel 12 in a suspended state, so that when the display panel 12 is impacted at the first through hole 120, deformation or damage will not easily occur.

[0098] On the other hand, in the manufacturing of the display module 10, after the display panel 12 is assembled with the back plate 13 filled with the support 14, the first through hole 120 and the third through hole 140 can be formed at one time by one processing procedure (for example, laser drilling), which is equivalent to making the first through hole 120 also penetrate the support 14 when the first through hole 120 is drilled, and the part of the first through hole 120 on the support 14 is the third through hole 140, so as to ensure the coaxiality of the first through hole 120 and the third through hole 140, and avoid the influence of the tolerance accumulation caused by the separate drilling on the display panel 12 and the support 14 and then the assembly.

[0099] In some embodiments, referring to Figure 16 shown, Figure 15 Another cross section (parallel to the XZ plane) of the display module 10 is provided in the embodiments of the present application. In the thickness direction (parallel to the Z axis) of the display module 10, the thickness h1 of the support 14 is greater than the thickness h2 of the back plate 13. In this way, the structural strength of the support 14 is higher, and it is not easy to deform when impacted, so as to provide more stable support for the display panel 12.

[0100] On the basis of the above, referring to Figure 15 shown, Figure 16 Another cross section (parallel to the XZ plane) of the display module 10 is provided in the embodiments of the present application. The support 14 can include a first part 141 and a second part 142, and the first part 141 and the second part 142 are distributed along the radial direction of the second through hole 130. The first part 141 is partially filled in the second through hole 130, and the third through hole 140 is drilled on the first part 141. The second part 142 is located on one side of the back plate 13 and is attached to the surface of the back plate 13.

[0101] In this way, after the support 14 fills the second through hole 130, the contact area between the support 14 and the back plate 13 is no longer only the inner wall area of the second through hole 130 (i.e. the contact area between the first part 141 and the second through hole 130), but also includes the contact area between the second part 142 and the surface of the back plate 13. That is, by increasing the contact area between the support 14 and the back plate 13 through the above structural design, when the support 14 and the back plate 13 are connected by adhesion or other methods, the connection between them can be more firm, and thus the risk of the support 14 falling off the back plate 13 when the display module 10 is impacted can be reduced.

[0102] It can be understood that, referring to Figure 17 shown, the second part 142 can be located on the surface of the back plate 13 away from the display panel 12. In this case, increasing the contact area between the support 14 and the back plate 13 by the second part 142 will not affect the subsequent assembly of the display panel 12 and the back plate 13.

[0103] Alternatively, please refer to Figure 18 as shown, Figure 17 Another cross section (parallel to the XZ plane) of the display module 10 is provided in the embodiments of the present application. The second part 142 can also be located on the surface of the back plate 13 facing the display panel 12. In this case, the second part 142 also needs to cover the surface of the back plate 13 facing the display panel 12. In this case, the display panel 12 is actually attached to the second part 142 of the support 14 when assembled, and the second part 142 covers the surface of the back plate 13 facing the display panel 12, thereby ensuring the flatness of the display panel 12 after attachment, and avoiding distortion of the displayed image.

[0104] In addition, the first part 141 and the second part 142 can be connected by bonding, threaded connection, riveting, etc. Alternatively, the first part 141 and the second part 142 can also be connected as an integral structure, that is, the first part 141 and the second part 142 form an integral structure, and there is no separation between the two. The integral structure is more firm than the split structure, and is convenient for production and manufacturing (for example, one-time molding by injection molding, cutting, 3D printing, etc.), thereby reducing production costs. In the following, the first part 141 and the second part 142 are taken as an example of injection molding to be explained.

[0105] In some embodiments, please refer to Figure 18 and Figure 17 as shown, Figure 17 a structural diagram of a support 14 provided in the embodiments of the present application, Figure 15 is a schematic diagram (bottom view) of the support 14 in Figure 19 assembled on the back plate 13. The second part 142 can be provided with a plurality of second parts 142, and the plurality of second parts 142 are circumferentially spaced apart around the first part 141.

[0106] For example, please continue to refer to Figure 20 and Figure 19The first portion 141 of the support 14 is provided with a third through hole 140 coaxial with the first through hole 120 and having the same diameter. At this time, the first portion 141 is in a circular ring structure with a thickness greater than that of the back plate 13 in the Z-axis direction, the end face of the first end of the first portion 141 is flush with the surface of the back plate 13 facing the display panel 12, and is in abutment with the display panel 12. The second end of the first portion 141 extends out of the second through hole 130 from the side of the back plate 13 away from the display panel 12. Two second portions 142 are provided, both connected to the side wall of the second end of the first portion 141, and in abutment with the surface of the back plate 13 away from the display panel 12. In addition, the two second portions 142 are also centrally symmetric about the axis of the third through hole 140. In this way, by providing two second portions 142 in abutment with the surface of the back plate 13, the contact area of the support 14 with the back plate 13 can be further increased, thereby enhancing the firmness of the connection between the support 14 and the back plate 13.

[0107] For another example, please refer to Figure 20 and Figure 19 as shown, Figure 19 is another structure diagram of the support 14 provided by the embodiments of the present application, Figure 20 is a schematic view (top view) of the support 14 in Figure 21 assembled on the back plate 13. Figure 22 The support 14 in Figure 21 is equivalent to the two second portions 142 added to the support 14 in the above , that is, four second portions 142 are provided, and the four second portions 142 are uniformly and spacedly arranged around the first portion 141, that is, the included angle between the center points of the two adjacent second portions 142 and the axis of the third through hole 140 is 90°. Therefore, by providing four second portions 142 in abutment with the surface of the back plate 13, not only the contact area of the support 14 with the back plate 13 is further increased, but also the connection between the support 14 and the back plate 13 is more firm. In addition, the four second portions 142 are uniformly and spacedly arranged around the first portion 141, when the periphery of the first through hole 120 on the display panel 12 is impacted, the impact force transmitted from the display panel 12 to the support 14 can be uniformly and dispersedly transmitted to the back plate 13 through the four second portions 142, thereby reducing the risk of fracture or falling of the support 14 due to local stress concentration.

[0108] Figure 22 In some embodiments, please refer to Figure 21 and Figure 22 is another structure diagram of the support 14 provided by the embodiments of the present application, Figure 23 is a schematic view (top view) of the support 14 in Figure 23 assembled on the back plate 13. The second portion 142 can extend around the first portion 141.

[0109] For example, please continue to see Figure 21 and Figure 24 , the first part 141 is a circular ring structure with a thickness greater than the thickness of the back plate 13 in the Z-axis direction, the end surface of the first end of the first part 141 is flush with the surface of the back plate 13 facing the display panel 12, and is in abutment with the display panel 12. The second end of the first part 141 protrudes from the side of the back plate 13 away from the display panel 12 through the second through hole 130. The second part 142 is also circular, and extends around the sidewall of the second end of the first part 141.

[0110] In this way, when the periphery of the first through hole 120 on the display panel 12 is impacted, the impact force transmitted by the display panel 12 to the support 14 can be uniformly transmitted and dispersed to the back plate 13 through the circular ring-shaped second part 142, thereby reducing the risk of breakage or falling of the support 14 due to local stress concentration, and the risk of deformation of the back plate 13 due to local stress concentration.

[0111] In some embodiments, the support 14 can also be transparent. Thus, when assembling the display panel 12 and the back plate 13 filled with the support 14, it is convenient to observe the positioning mark on the display panel 12 through the support 14, and to ensure that the fitting tolerance of the back plate 13 and the display panel 12 is within the allowable range. And after opening the first through hole 120, quality inspection can also be performed through the support 14 to observe whether there are burr defects and the like on the edge and inner wall of the first through hole 120.

[0112] On the basis of the above, please see Figure 24 and Figure 21 , as shown, Figure 1 is another structure of the display module 10 provided by the embodiments of the present application, Figure 25 is Figure 25 is a cross-sectional (parallel to the XZ plane) schematic diagram of the display module 10 in The above-mentioned display module 10 can also include a polarizer 15, which is arranged between the light-transmitting cover plate 11 and the display panel 12, and the fourth through hole 150 is arranged opposite to the first through hole 120. The polarizer 15 is used to enhance the contrast and color performance of the display module 10, and can reduce the reflection and glare of external light to a certain extent, and improve the visibility of the display module 10.

[0113] Further, please continue to see Figure 21As shown, the fourth through hole 150 can be coaxially arranged with the first through hole 120, and the diameter d4 of the fourth through hole 150 is equal to the diameter d1 of the first through hole 120 and the diameter d3 of the third through hole 140. In this way, when manufacturing the display module 10, the polarizer 15 and the back plate 13 filled with the support member 14 can be attached to the two sides of the display panel 12 respectively. Then, the first through hole 120, the third through hole 140 and the fourth through hole 150 can be formed in one step through a processing step (such as laser drilling). It is equivalent to making the fourth through hole 150 pass through the display panel 12 and the support member 14 in sequence when the fourth through hole 150 is opened. The part of the fourth through hole 150 on the display panel 12 is the first through hole 120, and the part of the fourth through hole 150 on the support member 14 is the third through hole 140. This can ensure the coaxiality of the first through hole 120, the third through hole 140 and the fourth through hole 150 and avoid the adverse effects of tolerance accumulation.

[0114] This application also provides a method for manufacturing a display module 10. Please refer to [link to relevant documentation]. Figure 2 As shown, Figure 26 A flowchart illustrating a method for manufacturing a display module 10 according to an embodiment of this application is provided. The method includes the following steps:

[0115] S1. A second through hole 130 is made on the back plate 13, and a support member 14 is filled into the second through hole 130;

[0116] S2. Attach the back panel 13 to the display panel 12;

[0117] S3. A first through hole 120 is opened on the display panel 12, and the first through hole 120 passes through the support member 14.

[0118] For example, as described above Figure 26 Taking the display module 10 as an example, its specific manufacturing process is as follows:

[0119] First step, such as Figure 21 As shown, Figure 3 for Figure 27 Schematic diagram of the manufacturing process of the display module 10 Figure 27 The polarizer 15 is attached to the display panel 12.

[0120] The second step, as Figure 21 As shown, Figure 4 for Figure 22 Schematic diagram of the manufacturing process of the display module 10 ​A second through hole 130 is formed on the back plate 13, and a support member 14 is filled in the second through hole 130. The support member 14 includes a first part 141 and a second part 142, which are radially distributed along the second through hole 130. The first part 141 partially fills the second through hole 130, and the second part 142 is in contact with the surface of the back plate 13.

[0121] The third step, as ​ As shown, ​ for ​ Schematic diagram of the manufacturing process of the display module 10 ​ The back plate 13, which is filled with the support member 14, is attached to the surface of the display panel 12 away from the polarizer 15, and the second part 142 is located on the surface of the back plate 13 away from the display panel 12.

[0122] Step four, as ​ As shown, ​ for ​ Schematic diagram of the manufacturing process of the display module 10 ​ Along the negative Z-axis, a fourth through hole 150 is formed on the polarizer 15 using laser drilling, and the fourth through hole 150 also passes through the first part 141 of the display panel 12 and the support member 14 in sequence.

[0123] Step 5, please return to the previous page. ​ As shown, the light-transmitting cover plate 11 is attached to the surface of the polarizer 15 facing away from the display panel 12, and the display module 10 is completed.

[0124] In the description of this specification, specific features, structures, materials, or characteristics may be combined in any suitable manner in one or more embodiments or examples.

[0125] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the scope of the technology disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A display module, characterized in that, include: The display panel has a first through hole. A back plate is attached to the display panel. A second through hole is provided on the back plate. The second through hole is opposite to the first through hole, and the cross-sectional area of ​​the second through hole is larger than that of the first through hole. A support member is provided, which is filled in the second through hole and has a third through hole, which is disposed opposite to the first through hole.

2. The display module according to claim 1, characterized in that, The third through hole is coaxially arranged with the first through hole.

3. The display module according to claim 1 or 2, characterized in that, The cross-sectional area of ​​the third through hole is equal to that of the first through hole.

4. The display module according to any one of claims 1 to 3, characterized in that, In the thickness direction of the display module, the thickness of the support member is greater than the thickness of the back plate.

5. The display module according to claim 4, characterized in that, The support member includes a first part and a second part. The first part partially fills the second through hole, and the third through hole is opened on the first part. The second part is located on one side of the back plate and is in contact with the surface of the back plate.

6. The display module according to claim 5, characterized in that, The second part is provided in multiple ways, and the multiple second parts are arranged circumferentially around the first part.

7. The display module according to claim 5, characterized in that, The second part extends around the first part.

8. The display module according to any one of claims 5 to 7, characterized in that, The second part is located on the surface of the back plate opposite to the display panel.

9. The display module according to claim 5 or 7, characterized in that, The second portion is located on the surface of the back panel facing the display panel, and the second portion covers the surface of the back panel facing the display panel.

10. The display module according to any one of claims 1 to 9, characterized in that, Both the first through hole and the second through hole are round holes.

11. The display module according to claim 10, characterized in that, The difference in diameter between the first through hole and the second through hole is greater than or equal to 0.6 mm.

12. The display module according to any one of claims 1 to 11, characterized in that, The display module also includes a light-transmitting cover plate, which is attached to the side of the display panel opposite to the back plate.

13. The display module according to any one of claims 1 to 12, characterized in that, The display module also includes a polarizer, which is attached to the side of the display panel away from the back plate, and the polarizer has a fourth through hole opposite to the first through hole.

14. The display module according to any one of claims 1 to 13, characterized in that, The back panel is made of metal.

15. The display module according to any one of claims 1 to 14, characterized in that, The support component is made of synthetic resin.

16. The display module according to any one of claims 1 to 15, characterized in that, The support component is made of transparent material.

17. An electronic device, characterized in that, include: case; The motherboard is housed within the casing; The front camera module is housed within the housing and electrically connected to the motherboard; The display module is the display module according to any one of claims 1 to 16, the display module is mounted on the housing, and the display module is electrically connected to the motherboard, and the light-incident end of the front camera module extends into the first through hole through the third through hole.

18. A method for manufacturing a display module, characterized in that, The method includes: A second through hole is made on the back plate, and a support member is filled into the second through hole; The back plate is attached to the display panel; A first through hole is formed on the display panel, and the first through hole penetrates the support member.

19. The manufacturing method according to claim 18, characterized in that, The support member includes a first part and a second part. The first part partially fills the second through hole, and when the first through hole is opened, the first through hole also penetrates the first part. The second part is attached to the surface of the back plate that is away from the display panel.

20. The manufacturing method according to claim 18 or 19, characterized in that, After opening a first through hole in the display panel, and the first through hole penetrates the support member, the method further includes: attaching a light-transmitting cover plate to the side of the display panel away from the back plate.

21. The manufacturing method according to any one of claims 18 to 20, characterized in that, Before attaching the back panel to the display panel, the method further includes attaching a polarizer to the surface of the display panel opposite to the back panel.

22. The manufacturing method according to any one of claims 18 to 21, characterized in that, The first through hole is opened using laser drilling.

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