Display module, electronic device

Abstract

The present application provides a display module and an electronic device. The display module includes a display panel and a support member arranged in a stacked manner. The side of the display panel facing away from the support member is the light-emitting side. The support member at least includes a first layer and a second layer arranged in a stacked manner. The first layer is located between the display panel and the second layer. The first layer has a first hollowed-out area, and the second layer has a second hollowed-out area. At least one of the first hollowed-out areas overlaps with at least one of the second hollowed-out areas, and at least one of the first hollowed-out areas does not overlap with any of the second hollowed-out areas. In the present application, a support member at least including a first layer and a second layer arranged in a stacked manner is used as the screen support structure of the display panel. Both the first layer and the second layer have hollowed-out areas. With such an arrangement, the convective heat dissipation of the support member can be increased, which is beneficial to the heat dissipation of the display panel. At the same time, due to the existence of the hollowing, the weight of the support member is greatly reduced.

Description

Technical Field

[0001] The present invention relates to the field of display technologies, and particularly to a display module and an electronic device.

Background Art

[0002] With the continuous development of display technologies, display modules are increasingly widely used, and consumers' requirements for displays are also getting higher and higher. The three major core development trends of display modules are the modularization of display modules, the reduction of the reflectivity of display modules, and the thinning of display modules. For current display modules, the support members in the display modules are prepared from a relatively thin stainless steel (SUS: a code for a type of stainless steel) material, which has problems such as poor heat dissipation effect and heavy weight, is not conducive to the thinning of display modules, and thus restricts the further development of display modules.

Summary of the Invention

[0003] To solve the above problems, the present invention provides a display module and an electronic device, which can effectively improve the heat dissipation performance of the display module and reduce the weight of the display module.

[0004] In a first aspect, an embodiment of the present application provides a display module, including:

[0005] A display panel and a support member stacked, and the side of the display panel facing away from the support member is the light-emitting side;

[0006] The support member at least includes a first layer and a second layer stacked, the first layer is located between the display panel and the second layer, the first layer has a first hollow area, and the second layer has a second hollow area;

[0007] At least one first hollow area overlaps with at least one second hollow area, and at least one first hollow area does not overlap with any second hollow area.

[0008] In a second aspect, an embodiment of the present application further provides an electronic device, and the electronic device includes the display module described in the first aspect.

[0009] The technical solution provided by the embodiment of the present application may include the following beneficial effects:

[0010] This application uses a support member including a stacked first layer and a second layer as the screen support structure of the display panel, and both the first layer and the second layer have hollow areas. With such a setting, on the one hand, in the support member, at least one first hollow area and at least one second hollow area overlap with each other to form a heat dissipation channel, increasing the convective heat dissipation of the support member, which is beneficial to the heat dissipation of the display panel. At the same time, due to the existence of the hollow areas, the weight of the support member is greatly reduced; on the other hand, at least one first hollow area does not overlap with any second hollow area, ensuring the rigid support of the support member, thereby improving the mechanical properties of the support member and meeting the performance requirements such as elastic modulus, tensile strength, yield strength, elongation at break, and bending performance of the support member. This application forms a patterned structure in the support member through the first hollow area and the second hollow area to improve the heat dissipation and weight reduction performance of the support member while ensuring its mechanical properties. In addition, compared with a single-layer support member, the at least two-layer stacked structure of the support member in this application can provide good flatness for the display panel, that is, the supportability of the support member to the display panel can be improved through multi-layer stacking, thereby realizing the improvement of the comprehensive performance of the support member and meeting the performance requirements of folding and curling display module products.

Description of the Drawings

[0011] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present invention. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0012] Figure 1 It is a schematic side view structure diagram of the display module of this application;

[0013] Figure 2 It is a schematic side view structure diagram of the support member of this application;

[0014] Figure 3 It is a schematic side view structure diagram of the display panel of this application;

[0015] Figure 4 It is a schematic side view structure diagram of the display module of this application in a bent state Figure 1 ;

[0016] Figure 5 It is a schematic side view structure diagram of the pattern group of this application including 1 overlapping first hollow area and second hollow area and 1 non-overlapping first hollow area and second hollow area;

[0017] Figure 6 It is a schematic side view structure diagram of the pattern group of this application including 2 overlapping first hollow areas and second hollow areas and 1 non-overlapping first hollow area and second hollow area;

[0018] Figure 7 This is a schematic side view of the structure of the support member of the present application including a first area and a second area;

[0019] Figure 8 The side view of the display module in this application is in a bent state Figure 2 ;

[0020] Figure 9 A schematic diagram of the side structure of a single-layer support member;

[0021] Figure 10 The schematic diagram of the side view structure of the display module in the flattened state for this application;

[0022] Figure 11 This is a schematic diagram of the side view structure of a display module of the present application, in which the size of the first layer is greater than or equal to the size of the second layer in a direction perpendicular to the plane where the display panel is located;

[0023] Figure 12 This is a schematic diagram of the side view structure of the support member of the present application without a hollow third layer located between the first layer and the second layer;

[0024] Figure 13 This is a schematic diagram of the side view structure of the support member of the first layer of the present application located between the third layer and the second layer without hollowing;

[0025] Figure 14 This is a schematic side view of the structure of a support member in which at least one third hollow area and at least one first hollow area overlap each other;

[0026] Figure 15 This is a schematic side view of the structure of a support member in which at least one third hollow area and at least one second hollow area overlap each other;

[0027] Figure 16 is a schematic side view of the structure of a support member having a third hollow area and located between the first layer and the second layer;

[0028] Figure 17 This is a schematic diagram of the side view structure of the support member in which the first area of ​​the present application is arranged in the middle area of ​​the bending zone, the second area is arranged in the edge area of ​​the bending zone, and the third layer is arranged on the side of the second layer away from the first layer;

[0029] Figure 18 A flow chart showing a method for preparing a display module of the present application;

[0030] Figure 19 This is a schematic side view of the structure of the electronic device of the present application.

[0031] In the attached figure:

[0032] 1- Display panel;

[0033] 2 - Support member;

[0034] 21 - First layer;

[0035] 211 - First hollow area;

[0036] 22 - Second layer;

[0037] 221 - Second hollow area;

[0038] 23 - Third layer;

[0039] 231 - Third hollow area;

[0040] 3 - Bending area;

[0041] 4 - Non - bending area;

[0042] 5 - Pattern group;

[0043] 6 - First area;

[0044] 7 - Second area;

[0045] 100 - Electronic device;

[0046] 10 - Display module;

[0047] 20 - Cover plate;

[0048] 30 - First adhesive layer;

[0049] 40 - Second adhesive layer;

[0050] 50 - Backplane assembly.

Detailed implementation manners

[0051] For a better understanding of the technical solution of the present invention, the embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0052] It should be clear that the described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts belong to the scope of protection of the present invention.

[0053] The terms used in the embodiments of the present invention are only for the purpose of describing specific embodiments, and are not intended to limit the present invention. The singular forms of "a", "the" and "said" used in the embodiments of the present invention and the appended claims are also intended to include the plural forms, unless the context clearly indicates otherwise.

[0054] It should be understood that the term "and / or" used herein is merely a description of the association relationship of associated objects, indicating that there can be three relationships. For example, A and / or B can represent three situations: A exists alone, A and B exist simultaneously, and B exists alone. Additionally, the character " / " in this text generally indicates that the associated objects before and after are in an "or" relationship.

[0055] In the display module of the prior art, SUS material (a type of stainless steel) is usually used to prepare the support member. The above materials can all meet the performance requirements such as elastic modulus, tensile strength, yield strength, elongation at break, and bending performance. However, the density of SUS material ≥ 7.8 g / cm 3 , resulting in a relatively heavy weight of the support member and poor heat dissipation effect, and unable to meet the weight reduction and heat dissipation requirements of foldable and rollable display module products.

[0056] Furthermore, researchers designed and developed to use titanium alloy material to prepare the support member. The density of titanium alloy ≥ 4.5 g / cm 3 , which makes the weight of the support member somewhat reduced. However, the heat dissipation effect of titanium alloy material is average and cannot meet the heat dissipation requirements of the support member.

[0057] To solve the above technical problems, the applicant envisions preparing the support member by using carbon fiber material, which has a relatively light weight and good heat dissipation ability and can meet the weight reduction and heat dissipation requirements of the support member. However, carbon fiber is prepared by impregnating fiber filaments with resin, resulting in a very low elongation at break (≤ 0.6%) of it, large brittleness and easy to break, and not resistant to puncture, resulting in poor mechanical properties of the support member.

[0058] Based on the above considerations, in order to make the support member have excellent weight reduction and heat dissipation performance on the premise of meeting the basic mechanical properties of the display module support member, the applicant has conducted in-depth research and provides a display module 10. Please refer to Figure 1 , which is a schematic structural diagram of the display module 10 of the present application, including:

[0059] The display panel 1 and the support member 2 are stacked. The side of the display panel 1 facing away from the support member 2 is the light-emitting side;

[0060] The support member 2 at least includes a first layer 21 and a second layer 22 stacked. The first layer 21 is located between the display panel 1 and the second layer 22. The first layer 21 has a first hollow area 211, and the second layer 22 has a second hollow area 221;

[0061] At least one first hollow area 211 overlaps with at least one second hollow area 221, and at least one first hollow area 211 does not overlap with any second hollow area 221.

[0062] In the above solution, the present application uses the support member 2 including the first layer 21 and the second layer 22 arranged in a stacked manner as the screen support structure of the display panel 1. The first layer 21 has a first hollow area 211, and the second layer 22 has a second hollow area 221. At least one first hollow area 211 overlaps with at least one second hollow area 221, and at least one first hollow area 211 does not overlap with any second hollow area 221. With such a setting, on the one hand, in the support member 2, at least one first hollow area 211 overlaps with at least one second hollow area 221 to form a heat dissipation channel, increasing the convective heat dissipation of the support member, which is beneficial to the heat dissipation of the display panel. At the same time, due to the existence of the hollow, the weight of the support member is greatly reduced. On the other hand, at least one first hollow area 211 does not overlap with any second hollow area 221, ensuring the rigid support of the support member 2, thereby improving the mechanical properties of the support member 2 and meeting the performance requirements such as the elastic modulus, tensile strength, yield strength, elongation at break, and bending performance of the support member 2. The present application forms a patterned structure in the support member 2 through the first hollow area 211 and the second hollow area 221 to improve the heat dissipation and weight reduction performance of the support member while ensuring the mechanical properties of the support member 2. In addition, compared with a single-layer support member, the at least two-layer stacked structure in the support member 2 of the present application can provide good flatness for the display panel 1, that is, the supportability of the support member for the display panel can be improved through multi-layer stacking, thereby realizing the improvement of the comprehensive performance of the support member and meeting the performance requirements of folding and curling display module 10 products.

[0063] It can be understood that, please refer to Figure 2 , the overlap of the first hollow area 211 and the second hollow area 221 means that the orthographic projection of the first hollow area 211 on the plane where the display panel 1 is located at least partially coincides with the orthographic projection of the second hollow area 221 on the plane where the display panel 1 is located. It can be completely coincident or partially coincident. Conversely, the non-overlap of the first hollow area 211 and the second hollow area 221 means that the orthographic projection of the first hollow area 211 on the plane where the display panel 1 is located does not coincide with the orthographic projection of the second hollow area 221 on the plane where the display panel 1 is located.

[0064] Please refer to Figure 1 , along the Z-axis direction, the display panel 1 and the support member 2 are arranged in sequence. As Figure 1 The arrow direction Z in shows the light-emitting direction of the display module 10. Among them, the first layer 21 is located between the display panel 1 and the second layer 22, that is, the first layer 21 is the near-Panel (display panel) layer, and the second layer 22 is the far-Panel layer.

[0065] It should be noted that, Figure 1The display module 10 of the present application is schematically illustrated only by taking a rectangular display device as an example, and the specific shape of the display module 10 is not limited. In some other embodiments of the present invention, the shape of the display module 10 may also be embodied as other shapes different from a rectangle, such as a circle, an ellipse, etc. Additionally, Figure 1 only the relative positional relationship between the display panel 1 and the support member 2 in the display module 10 is schematically illustrated, and it does not represent the actual sizes of the respective film layers.

[0066] In some embodiments, the first hollow-out region 211 and the second hollow-out region 221 may be a rectangle, a circle, an ellipse, etc., and of course, other shapes are also possible. The embodiments of the present application do not limit this here.

[0067] In the embodiments of the present application, the display panel 1 is an OLED (Organic Light-Emitting Diode), please refer to Figure 3 , the OLED display panel 1 includes an array substrate 11, a light-emitting layer 12, and a packaging layer 13 that are stacked in sequence; wherein the array substrate 11 is mainly used to control the pixel units in the light-emitting layer 12. Exemplarily, the pixel units include at least two colors of sub-pixels: PX1, PX2, and PX3, so that the OLED display panel 1 presents different colors. The array substrate includes a plurality of pixel circuits arranged in an array, and the pixel circuit includes a thin-film transistor (TFT) and a pixel unit connected to the pixel circuit. During the preparation process of the array substrate, the same film layer adopts the same process, and the active layers between different pixel circuits are an integrated graphic structure. The active layer itself is not conductive, and partial regions are made conductive by doping the active layer. The conductive active layer can be electrically connected to the wiring layer to replace part of the wiring. Specifically, optionally, the active layer of each transistor includes a polysilicon active layer or a metal oxide active layer. The polysilicon active layer can be formed by using low-temperature poly-silicon (LTPS) technology, and has the advantages of simple structure, good stability, high electron mobility, and small circuit area. Optionally, the active layer can adopt low-temperature polycrystalline oxide (LPTO).

[0068] In other embodiments, the display panel 1 may also be an LCD panel (Liquid Crystal Display), and the LCD display panel in the related art includes a backlight source, a lower polarizer, an array substrate, a liquid crystal layer, a color filter film, an upper polarizer, and a transparent cover plate that are stacked. Among them, the backlight source is mainly used to provide light for the LCD screen, and the array substrate is mainly used to control the deflection of liquid crystal molecules in the liquid crystal layer so that light beams of different brightness reach the color filter film. The color filter film is provided with sub-pixels of multiple colors arranged in an array for the LCD display panel to display different colors. Of course, the display panel may also be other display panels, such as Micro-LED (using self-luminous micron-scale LEDs as light-emitting pixel units), MiniLed (LED devices with chip sizes between 50 and 200 μm), and quantum dots, etc., which will not be elaborated here.

[0069] In the embodiments of the present application, the display panel is a flexible display panel, that is, the display module 10 is a flexible display module. Please refer to Figure 4 , the flexible display module includes a bending area 3 and a non-bending area 4 located on one side of the bending area 3 along the first direction. Among them, the first direction is parallel to the plane where the display panel 1 is located. The first direction may be, for example, the X-axis direction. It can be understood that there are two non-bending areas 4, and the two non-bending areas 4 are connected to both sides of the bending axis of the bending area 3. It should be noted that the above bending axis is not an actual structure existing in the display module 10, but a concept proposed to illustrate the bending process of the display panel 1. The flexible display module can be switched between a flattened state and a bent state. When the flexible display module is in the flattened state, the display surface of the flexible display panel is flat, and the bending area 3 and the non-bending area 4 are in the same plane. Users can see a flat image through the flat-shaped flexible display module; when the flexible display module is in the bent state, the display surface of the flexible display panel is curved, and the bending area 3 and the non-bending area 4 are in different planes. Users can see a curved image through the flexible display module, enriching the viewing angle of users. In the embodiments of the present application, a conventional rotating shaft or rotating component in the art is used to control the switching of the flexible display module between the flattened state and the bent state.

[0070] For a flexible display panel, its substrate is a flexible substrate, so its edge is prone to bending, and its surface is also prone to being scratched. A support member 2 is provided on the side of the substrate of the display panel away from the light-emitting side. On the one hand, it can prevent the edge of the substrate from bending and play a supporting role. On the other hand, it can also prevent the substrate from being scratched.

[0071] In some embodiments, please refer to Figure 5, the support member 2 has a pattern group 5. The pattern group 5 includes an area where m first hollow areas 211 and second hollow areas 221 overlap and an area where n first hollow areas 211 do not overlap with any second hollow area 221. Along the direction parallel to the plane where the display panel is located, the pattern group 5 is repeatedly arranged. Specifically, the pattern group 5 includes the overlapping part of the first hollow area 211 and the second hollow area 221 and the non-overlapping part of the first hollow area 211 and the second hollow area 221. By repeatedly arranging the pattern group 5 along the direction parallel to the plane where the display panel 1 is located, the hollow areas are arranged in an array along the direction parallel to the plane where the display panel is located on the support member 2, which can make the stress of the support member 2 uniform, improve the mechanical properties such as the bending resistance and tensile resistance of the support member 2 and its service life, and avoid problems such as stress concentration and cracks in the support member 2 during use. It can be understood that there are countless directions parallel to the plane where the display panel is located. Preferably, the direction parallel to the plane where the display panel is located is along the x-axis direction, that is, the length direction of the support member 2. The above setting is beneficial to setting more hollow areas on the support member 2 to maximize the hollowing effect.

[0072] In this embodiment, in one pattern group, m≥1, n≥1. Exemplarily, m can be 1, 2, 3, 4, 5, etc., and n can be 1, 2, 3, 4, 5, etc. That is, the overlapping part of the first hollow area 211 and the second hollow area 221 can be one or more, and the non-overlapping part of the first hollow area 211 and the second hollow area 221 can be one or more. Exemplarily, please continue to refer to Figure 5 , which is a schematic side view structure diagram of the pattern group 5 including 1 overlapping first hollow area 211 and second hollow area 221 and 1 non-overlapping first hollow area 211 and second hollow area 221; please refer to Figure 6 , which is a schematic side view structure diagram of the pattern group 5 including 2 overlapping first hollow areas 211 and second hollow areas 221 and 1 non-overlapping first hollow area 211 and second hollow area 221. Considering that different users or different products have different requirements for the support member 2, the numbers of m and n in the pattern group 5 can be adjusted according to the requirements. For example, for a support member product with a large heat dissipation requirement, in the pattern group, m>n; for a support member product with a large mechanical property requirement, in the pattern group, m<n; for a support member product seeking a balance of various performance aspects, in the pattern group, m=n.

[0073] In some embodiments, please refer to Figure 7, the support member 2 includes a first region 6 and a second region 7. The first hollow regions 211 and the second hollow regions 221 in the first region 6 overlap each other, and the first hollow region 211 in the second region 7 does not overlap with any of the second hollow regions 221. Specifically, the existence of the first region 6 where the first hollow regions 211 and the second hollow regions 221 overlap each other results in a relatively large area of the hollow regions, which can improve the heat dissipation capacity of the support member 2 while enhancing the weight reduction performance. The existence of the second region 7 where the first hollow region 211 does not overlap with any of the second hollow regions 221 can ensure the rigid support of the support member 2, thereby improving the mechanical properties of the support member 2 and meeting the performance requirements such as elastic modulus, tensile strength, yield strength, elongation at break, and bending performance of the support member 2. Through the cooperative arrangement of the first region 6 and the second region 7, the present application is used to improve the heat dissipation performance and weight reduction performance of the support member 2 while ensuring the mechanical properties of the support member 2.

[0074] In this embodiment, the support member 2 includes at least one first region 6 and at least one second region 7, that is, the number of the first regions 6 and the number of the second regions 7 may be the same or different. When the number of the first regions 6 and the number of the second regions 7 are the same, if the number of the first hollow regions 211 in the first region 6 and the second region 7 is the same, the support member 2 can obtain a relatively uniform stress distribution. If the number of the first hollow regions 211 in the first region 6 is more than that in the second region 7, it indicates that there are more hollow regions in the support member 2 of the present application, which can achieve good weight reduction and heat dissipation effects.

[0075] In some embodiments, along the direction parallel to the plane where the display panel 1 is located, the first region 6 and the second region 7 may be regularly arranged alternately or arranged irregularly. For a flexible display panel, preferably, the first region 6 and the second region 7 are arranged alternately. Specifically, please refer to Figure 7 , taking the X-axis direction as the direction parallel to the plane where the display panel 1 is located as an example, the first region 6 and the second region 7 are arranged alternately along the X-axis direction, that is, along the X-axis direction, the hollow regions on the support member present a distribution of "first region - second region - first region...", which can evenly disperse the stress received by the support member 2 during the bending process, thereby improving the heat dissipation and weight reduction performance of the support member 2 while enhancing the bending performance and improving the bending service life of the display module 10.

[0076] In some embodiments, please refer to Figure 8, the bending area 3 includes an intermediate area 31 and an edge area 32. The edge area 32 is located on the side of the intermediate area 31 facing the non-bending area 4. Along the first direction, the first area 6 is arranged in the intermediate area 31 of the bending area 3, and the second area 7 is arranged in the edge area 32 of the bending area 3. The first direction is parallel to the plane where the display panel 1 is located. Specifically, for the flexible display module, the bending area 3 includes the intermediate area 31 and the edge area 32. It can be understood that the intermediate area 31 and the edge area 32 are only areas indicating different positions on the display module 10. During the bending process of the support member 2, there will be a situation where the support members 2 in the bending area 3 press against each other, and the stress on the edge area 32 of the bending area 3 is more affected. Therefore, the first area 6 needs to be arranged in the intermediate area 31 of the bending area 3, and the second area 7 is arranged in the edge area of the bending area, so that the hollow areas of the first layer 21 and the second layer 22 form an inverted "water droplet" structure. The inverted "water droplet" structure can make the stress borne by the second layer 22 greater than the pressure borne by the first layer 21 during the bending process, avoiding the problem that excessive hollow areas cause excessive stress in the edge area 32, resulting in creases or fractures in the support member 2, thereby balancing the stress between the intermediate area 31 and the edge area 32 of the bending area 3 and improving the ductility of the support member during the bending process. In this embodiment, Figure 8 is an embodiment where the hollowing is only provided in the bending area 3, Figure 4 is an embodiment where the hollowing is provided in both the bending area 3 and the non-bending area 4. The bending area of the support member of the present application must contain hollowing, and whether to provide hollowing in the non-bending area 4 can be selected according to the required performance of the support member.

[0077] In some embodiments, in the support member 2 of the present application, the materials of the first layer 21 and the second layer 22 can be the same or different. When the materials of the first layer 21 and the second layer 22 are the same, the support member can be regarded as a single-layer structure. Please refer to Figure 9, which is a schematic structural diagram of a single-layer support member. In the support member 2 of the single-layer structure, the mutually overlapping first hollow area 211 and the second hollow area 221 extend from each other to form an integral hollow area, which can increase the area of the hollow area in the support member 2, thereby achieving a good weight reduction effect. Exemplarily, the material of the support member 2 is A380 aluminum alloy, and A380 aluminum alloy belongs to the Al-Si-Cu series alloy. Among them, in the A380 aluminum alloy, the mass percentages of each component are as follows: Cu 3.0% - 4.0%, Si 7.5% - 9.5%, Mg 0.1% Max (indicating the maximum content is 0.1%), Fe 2.0% Max, Zn 3.0% Max, Mn 0.5% Max, Ni 0.5% Max, Sn 0.35% Max, and the balance is Al. Different from conventional aluminum alloys, the A380 aluminum alloy of the present application has the characteristics of not being easily brittle, low density, and good heat dissipation effect, which can improve the mechanical properties of the support member while improving the heat dissipation performance.

[0078] Since the first layer 21 is closer to the display panel 1 than the second layer 22, the heat dissipation effect of the first layer 21 on the display panel 1 is more significant, while the second layer 22 mainly plays a supporting role. Therefore, selecting different materials for the first layer 21 and the second layer 22 can work together to improve the service performance of the support member.

[0079] In some embodiments, the material of the first layer 21 includes any one of aluminum and copper, and the material of the second layer 22 includes any one of titanium, aluminum, and copper. Aluminum and copper have excellent electrical conductivity and thermal conductivity. Combined with the setting of the first hollow area 211 of the first layer 21, it can meet the heat dissipation capacity near the Panel side. Titanium, aluminum, and copper have excellent mechanical properties (such as elastic modulus, tensile strength, yield strength, elongation at break, and bending properties, etc.). It is arranged on the far Panel side of the support member 2 to play a supporting role. Exemplarily, the support member 2 includes a first layer 21 and a second layer 22 arranged in a stacked manner. Among them, the first layer 21 is arranged between the display panel 1 and the second layer 22. In one case, the material of the first layer 21 is aluminum, and the material of the second layer 22 is copper or titanium; in another case, the material of the first layer is copper, and the material of the second area is aluminum or titanium. Since the first area is the near Panel side, the present application selects the first layer made of copper or aluminum material, which has excellent electrical and thermal conductivity effects and is beneficial to improving the heat dissipation performance of the support member.

[0080] In some embodiments, the display module 10 includes a bending area 3 and a non-bending area 4 located on one side of the bending area 3 in a first direction. The first direction is parallel to the plane where the display panel 1 is located. Along the direction from the bending area 3 to the non-bending area 4, the size of the first hollow area 211 is smaller than the size of the second hollow area 221. With such a setting, the display module 10 of the present application is a flexible display module, which can be bent so as to be folded or unfolded. By setting the size of the first hollow area closer to the display panel 1 to be smaller, the problem of creases generated on the side of the support 2 near the Panel during the bending process can be alleviated. It can be understood that, referring to Figure 10 , which is a side view structural diagram of the flattened state of the flexible display module 10. In the flattened state of the display module 10, the direction from the bending area 3 to the non-bending area 4 is the Figure 10 X-axis direction in, that is, the horizontal direction of the support, then the size of the first hollow area 211 is the width L1 of the first hollow area 211, and the size of the second hollow area 221 is the width L2 of the second hollow area 221.

[0081] In some embodiments, referring to Figure 11 , in the direction perpendicular to the plane where the display panel 1 is located, the size of the first layer 21 is greater than or equal to the size of the second layer 22. Specifically, since at least one first hollow area 211 overlaps with at least one second hollow area 221, and at least one first hollow area 211 does not overlap with any second hollow area 221, the number of the first hollow areas 211 in the first layer 21 is greater than or equal to the number of the second hollow areas 221 in the second layer 22. It can be understood that the size in the direction perpendicular to the plane where the display panel 1 is located refers to the thickness direction of the support 2 (i.e., the Z-axis direction), and the thickness H1 of the first layer 21 is greater than or equal to the thickness H2 of the second layer 22. By limiting the thickness H1 of the first layer 21 to be greater than or equal to the thickness H2 of the second layer 22, the present application can improve the heat dissipation effect of the support 2 while compensating for the problem that the mechanical properties of the support 2 are somewhat reduced due to the existence of the first hollow area 211. If the thickness of the first layer 21 is less than the thickness of the second layer 22, the heat dissipation effect of the display module 10 will be reduced, and at the same time, problems such as indentation and surface unevenness may occur when the display module 10 is pressed during use.

[0082] In some embodiments, the at least stacked first layer 21 and second layer 22 may include the stacked first layer 21 and second layer 22, or, the at least stacked first layer 21 and second layer 22 may further include the stacked first layer 21 and second layer 22, and the third layer or the fourth layer. Of course, more layers may also be included.

[0083] In some embodiments, referring to Figure 12, the support member 2 further includes a third layer 23 stacked with the first layer 21 and the second layer 21. Among them, the material of the third layer 23 is different from that of the first layer 21, and the material of the third layer 23 is different from that of the second layer 22. With such a setting, the presence of the third layer 23 can enhance the comprehensive performance of the support member 2.

[0084] In some embodiments, the third layer 23 does not have a hollowed-out area. With such a setting, the third layer can provide support for the support member 2 and improve the mechanical properties of the support member. The position of the third layer 23 can be changed according to the required performance of the support member 2. Exemplarily, please continue to refer to Figure 12 , the third layer 23 is located between the first layer 21 and the second layer 22. With such a setting, it meets the heat dissipation effect and mechanical properties of the support member 2 for the display panel. Exemplarily, swap the positions of the first layer 21 and the third layer 23. Please refer to Figure 13 , that is, the first layer 21 is located between the third layer 23 and the second layer 22. With such a setting, the third layer 23 without a hollowed-out area can improve the surface flatness of the support member 2 near the Panel side and alleviate the crease problem generated during the bending process of the display module 10.

[0085] In some embodiments, the third layer 23 has a third hollowed-out area 231, and at least one third hollowed-out area 231 overlaps with at least one first hollowed-out area 211 and / or a second hollowed-out area 221. Please refer to Figure 14 , which is a side view structural schematic diagram of the support member where at least one third hollowed-out area 231 overlaps with at least one first hollowed-out area 211. Please refer to Figure 15 , which is a side view structural schematic diagram of the support member where at least one third hollowed-out area 231 overlaps with at least one second hollowed-out area 221. With such a setting, the weight reduction effect of the support member 2 is improved by setting the third hollowed-out area 231 on the third layer 23.

[0086] In one embodiment, the pattern group 5 may include m regions where the first hollowed-out area 211 and the second hollowed-out area 221 overlap, n regions where the first hollowed-out area 211 does not overlap with any second hollowed-out area 221, and o regions where the first hollowed-out area 211 and the third hollowed-out area 231 overlap; or the pattern group 5 may include m regions where the first hollowed-out area 211 and the second hollowed-out area 221 overlap, n regions where the first hollowed-out area 211 does not overlap with any second hollowed-out area 221, and p regions where the third hollowed-out area 231 and the second hollowed-out area 221 overlap. Among them, the pattern group 5 is repeatedly set, m≥1, n≥1, o≥1, p≥1. With such a setting, the hollowed-out areas are arranged in an array in the direction parallel to the plane of the display panel in the support member 2, which can make the stress of the support member 2 uniform, improve the mechanical properties such as the bending resistance and tensile resistance of the support member 2 and its service life, and avoid problems such as stress concentration and cracks in the support member 2 during use. Exemplarily, please continue to refer toFigure 14 , the pattern group 5 may include an area where the first hollow area 211 and the second hollow area 221 overlap each other, an area where the first hollow area 211 does not overlap with any of the second hollow areas 221, and an area where the two first hollow areas 211 and the third hollow area 231 overlap each other; please continue to refer to Figure 15 , the pattern group 5 may include an area where the first hollow area 211 and the second hollow area 221 overlap, an area where the first hollow area 211 does not overlap with any of the second hollow areas 221, and an area where the third hollow area 231 and the second hollow area 221 overlap each other.

[0087] In some embodiments, please continue to refer to Figure 14 , in the first area 6, the first hollow area 211 and the second hollow area 221 overlap each other, and the first hollow area 211 overlaps with the third hollow area 231. In the second area 7, the first hollow area 211 in the second area 7 does not overlap with any of the second hollow areas 221, and the third hollow area 231 includes two different situations. In the first situation, please continue to refer to Figure 14 and Figure 16 , the first hollow area 211 overlaps with the third hollow area 231. In the second situation, please continue to refer to Figure 15 , the first hollow area 211 does not overlap with any of the third hollow areas 231. With such a setting, it is possible to set whether the first hollow area 211 and the third hollow area 231 overlap according to different product requirements of the support member 2, so as to set the position of the hollow area on the support member 2, thereby meeting the requirements of the support member 2 for weight reduction and heat dissipation.

[0088] In one embodiment, please continue to refer to Figure 15 , the second layer 22 is located between the first layer 21 and the third layer 23. With such a setting, the second layer 23 is located in the middle layer, and more hollows can be set on the third layer 23 to improve the weight reduction effect of the support member 2. Exemplarily, the first layer is an aluminum layer, the second layer is a titanium layer, and the third layer is a copper layer. The heat dissipation ability of titanium is poor, resulting in limited improvement in the heat dissipation effect of the support member 2, while the density of copper is high, and more hollows can be set on the copper layer to improve the weight reduction effect of the support member 2. In another embodiment, please refer to Figure 16 , the third layer 23 is located between the first layer 21 and the second layer 22. With such a setting, the third layer 23 is in the middle position of the support member 2, and more hollows can be set on the third layer 23 to improve the heat dissipation effect of the support member 2. Exemplarily, the first layer is a copper layer, the third layer is a titanium layer, and the second layer is an aluminum layer. The heat dissipation ability of titanium is poor, while the density of aluminum is low. By setting more hollows in the titanium layer, convective heat dissipation can be increased, and at the same time, the weight reduction effect can also be achieved.

[0089] In some embodiments, please refer to Figure 17, when the display module 10 is a flexible display module, when the first region 6 is disposed in the middle region of the bending region 3 and the second region 7 is disposed in the edge region of the bending region 3, the third layer 23 is disposed on the side of the second layer 22 away from the first layer 21, that is, the second layer 22 is located between the first layer 21 and the third layer 23. Such a setting makes the hollow regions of the first layer 21 and the second layer 22 have an inverted "water droplet" structure, and at the same time, by providing a relatively large number of third hollow regions 231 on the third layer 23, the weight reduction effect of the support member 2 is improved.

[0090] In some embodiments, when the display module 10 is a flexible display module, in the flattened state, along the direction from the bending region 3 to the non-bending region 4, the size of the first hollow region 211 is smaller than the size of the second hollow region 221, and the size of the first hollow region 211 is smaller than the size of the third hollow region 231. Specifically, the support member 2 may include a first layer 21, a second layer 22, and a third layer 23 that are sequentially stacked, or the support member 2 may include a first layer 21, a third layer 23, and a second layer 22 that are sequentially stacked. In the above two solutions, the first layer 21 is the side close to the Panel. Along the direction from the bending region 3 to the non-bending region 4, the size of the first hollow region 211 is smaller than the size of the second hollow region 221, and the size of the first hollow region 211 is smaller than the size of the third hollow region 231. Such a setting indicates that the hollow size of the first layer 21 on the side close to the Panel is relatively small, which can alleviate the crease problem generated by the support member 2 during the bending process. It can be understood that the direction from the bending region 3 to the non-bending region 4 is the Figure 17 X-axis direction in, and the sizes of the first hollow region 211, the second hollow region 221, and the third hollow region 231 are the Figure 17 width direction in. When the third layer 23 is located between the first layer 21 and the second layer 22, the width of the third layer 23 may be smaller than the width of the second layer 22. When the second layer 22 is located between the first layer 21 and the third layer 23, the width of the second layer 22 may be smaller than the width of the third layer 23. Such a setting makes the hollow width of the support member increase sequentially along the direction from the display panel 1 to the support member 2, which is beneficial to the stress balance of the support member 2 during the bending process and can alleviate the crease contribution of the support member 2 to the display module 10 to the greatest extent.

[0091] In some embodiments, the shapes and areas of the hollow regions of each layer in the support member 2 may be the same, which can ensure the complementarity between layers, facilitate the processing and manufacturing of the support member 2, and reduce costs.

[0092] Exemplarily, the thickness H of the support member 2 is 0.1 mm to 0.18 mm. Specifically, the thickness H of the support member 2 can be 0.1, 0.11, 0.12, 0.13, 0.14, 0.15, 0.16, 0.17, 0.18, etc. Specifically, among the first layer 21, the second layer 22, and the third layer 23, the layer structure closest to the display panel 1 has the largest thickness, and its thickness is 1 / 3H to 3 / 5H. The thicknesses of the remaining layers can be 1 / 5H to 1 / 3H. Within the above thickness range, the support property and heat dissipation effect of the surface of the support member 2 close to the display panel 1 can be compensated, ensuring the service life of the support member 2. Specifically, the thicknesses of the layers in the support member 2 can be selected according to factors such as the thickness requirements for actual support and the processing technology level of the support member.

[0093] In some embodiments, an EVA layer (not shown in the figure) is further provided between the display panel 1 and the support member 2. The first layer 21 or the third layer 23 of the support member 2 close to the display panel 1 is adhered to the display panel 1 through this EVA layer.

[0094] Based on the same inventive concept, on the basis of the embodiments of the present application, the embodiments of the present application further provide a method for manufacturing a display module 10. The present application uses a simple process to set and etch the support member 2, which can improve the heat dissipation effect and weight reduction effect of the support member 2. For details, see Figure 18 , Figure 18 which is a flowchart of the method for manufacturing the display module 10 of the present application and includes the following specific steps:

[0095] S100: Provide a display panel 1. The structure of the display panel 1 is as described above and will not be elaborated here.

[0096] S200: Provide a support member 2. The support member 2 includes a first layer 21 and a second layer 22 stacked. Pattern the support member 2 according to a preset pattern so that the first layer 21 has a first hollow area 211 and the second layer 22 has a second hollow area 221; or provide a support member 2. The support member 2 includes a first layer 21, a second layer 22, and a third layer 23 stacked. Pattern the support member 2 according to a preset pattern so that the first layer 21 has a first hollow area 211, the second layer 22 has a second hollow area 221, and the third layer 23 has a third hollow area 231.

[0097] S300: Stack the display panel 1 and the support member 2 in sequence and perform gluing treatment to obtain the display module 10.

[0098] In some embodiments, the material of the first layer 21 includes any one of aluminum and copper, the material of the second layer 22 includes any one of titanium, aluminum, and copper, and the material of the third layer 23 is different from the materials of the first and second layers. Exemplarily, the first layer 21 is an aluminum layer, the second layer 22 is a copper layer, and the third layer 23 is a titanium layer. It can also be: the first layer 21 is a copper layer, the second layer 22 is an aluminum layer, and the third layer 23 is a titanium layer; it can also be: the first layer 21 is an aluminum layer, the second layer 22 is a titanium layer, and the third layer 23 is a copper layer, etc. Of course, the materials of each layer of the support member 2 can also be other selections within the above range, and the present application does not limit this here.

[0099] In some embodiments, the support member of the present application can be a single-layer structure formed integrally, or a layer structure obtained by surface composite treatment of the first layer 21, the second layer 22, and the third layer 23. The composite treatment method is a conventional metal composite method in the art, and the present application does not limit this here. Exemplarily, the composite treatment includes the rolling method and the metal extrusion method, etc.

[0100] In this embodiment, for the integrally formed support member structure, the patterning process can be prepared by pre-designing a support member mold and making an integral mold through integral forming. For the laminated composite support member structure, an etching method is used to process each layer structure to obtain corresponding hollow patterns. Exemplarily, for the aluminum material, an etching treatment is performed using a mixed solution of Fecl3 + H2SO4. Different mass ratios of Fecl3 and H2SO4 can be selected according to the etching time and the hollow area. The present application does not limit the mixing ratio of Fecl3 and H2SO4. For the copper material, an etching treatment is performed using an HF solution. For the titanium material, an etching treatment is performed using a mixed solution of FeCl3 + HCl. Different mass ratios of FeCl3 and HCl can be selected according to the etching time and the hollow area. The present application does not limit the mixing ratio of FeCl3 and HCl.

[0101] In summary, the display module 10 provided by the present application, based on the laminated support member 2 layer structure, by setting the materials of different layer structures and performing etching treatment on different layer structures to form different hollow areas, enables the support member 2 to dissipate heat of the material and convectively dissipate heat through the hollow areas, thereby improving the heat dissipation effect of the support member 2. At the same time, the setting of the hollow areas can also play a role in reducing the weight of the support member 2.

[0102] The embodiment of the present application also provides an electronic device 100. Please refer to Figure 19 , Figure 19Schematic diagram of an electronic device 100 provided by an embodiment of the present application. The electronic device 100 includes a cover plate 20, a first adhesive layer 30, a display module 10, a second adhesive layer 40, and a backplane assembly 50 that are stacked. The display module 10 is the aforementioned display module 10. The specific structure of the display module 10 has been described in detail in the above embodiments and will not be elaborated here. Of course, Figure 19 The illustrated electronic device 100 is only for illustrative purposes. The display device may be any electronic device 100 with a display function, such as a mobile phone, a tablet computer, a laptop computer, an e-book reader, or a television.

[0103] The foregoing is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A display module, characterized in that, Comprising: A display panel and a support member arranged in a stacked manner, with the side of the display panel facing away from the support member being the light-emitting side; The support member at least includes a first layer and a second layer arranged in a stacked manner. The first layer is located between the display panel and the second layer. The first layer has a first hollowed-out area, and the second layer has a second hollowed-out area; At least one of the first hollowed-out areas overlaps with at least one of the second hollowed-out areas, and at least one of the first hollowed-out areas does not overlap with any of the second hollowed-out areas; The support member has a pattern group, which includes m areas where the first hollowed-out area and the second hollowed-out area overlap and n areas where the first hollowed-out area does not overlap with any of the second hollowed-out areas. m≥1, n≥1, and the pattern group is repeatedly arranged in a direction parallel to the plane where the display panel is located.

2. The display module according to claim 1, wherein The support member includes a first area and a second area. In the first area, the first hollowed-out area and the second hollowed-out area overlap, and in the second area, the first hollowed-out area does not overlap with any of the second hollowed-out areas.

3. The display module according to claim 2, wherein In a direction parallel to the plane where the display panel is located, the first area and the second area are alternately arranged.

4. The display module according to claim 2, wherein The display module includes a bent area and a non-bent area located on one side of the bent area in a first direction. The bent area includes a middle area and an edge area. The edge area is located on the side of the middle area facing the non-bent area. In the first direction, the first area is arranged in the middle area of the bent area, and the second area is arranged in the edge area of the bent area. The first direction is parallel to the plane where the display panel is located.

5. The display module according to claim 1, wherein The materials of the first layer and the second layer are different.

6. The display module according to claim 1, wherein The material of the first layer includes any one of aluminum and copper; and / or The material of the second layer includes any one of titanium, aluminum, and copper.

7. The display module according to claim 1, wherein The display module includes a bent area and a non-bent area located on one side of the bent area in a first direction. The first direction is parallel to the plane where the display panel is located. In the direction from the bent area to the non-bent area, the size of the first hollowed-out area is smaller than the size of the second hollowed-out area.

8. The display module according to claim 1, wherein In a direction perpendicular to the plane where the display panel is located, the size of the first layer is greater than or equal to the size of the second layer.

9. The display module according to claim 1, wherein, The support member further includes a third layer arranged in a stacked manner with the first layer and the second layer. The material of the third layer is different from the material of the first layer and different from the material of the second layer.

10. The display module according to claim 9, wherein The third layer does not have a hollowed-out area.

11. The display module according to claim 10, wherein The third layer is located between the first layer and the second layer; or The first layer is located between the third layer and the second layer.

12. The display module according to claim 9, wherein The third layer has a third hollowed-out area, and at least one of the third hollowed-out areas overlaps with at least one of the first hollowed-out areas and / or the second hollowed-out areas.

13. The display module according to claim 12, wherein, The third layer is located between the first layer and the second layer; or The second layer is located between the first layer and the third layer.

14. The display module according to claim 12, wherein The display module includes a bending area and a non-bending area located on one side of the bending area in a first direction, the first direction being parallel to the plane where the display panel is located. Along the direction from the bending area to the non-bending area, the size of the first hollow area is smaller than the size of the second hollow area, and the size of the first hollow area is smaller than the size of the third hollow area.

15. An electronic device, characterized in that, The electronic device includes the display module according to any one of claims 1 to 14.

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