Support Component, Display Module and Electronic Device

Abstract

The present application provides a support component, a display screen and an electronic device. The support component is used to support the display screen. The support component includes at least two stacked layers, and the modulus of each stacked layer gradually increases in a direction away from the display screen. The present application can reduce the thickness and weight of the support component and improve the ball-drop buffering ability of the support component.

Description

Technical Field

[0001] The present application relates to the technical field of electronic devices, and in particular, to a support component, a display module, and an electronic device. Background Art

[0002] The straight-bar mobile phone uses a flexible organic light-emitting diode (i.e., Organic Light Emitting Diode, abbreviated as OLED) display screen. Compared with a liquid crystal display screen (i.e., Liquid Crystal Display, abbreviated as LCD) or a rigid OLED display screen, the impact resistance of the display touch layer has been greatly reduced, and the risk of fracture failure under dropping or squeezing has been greatly increased. The fundamental reason is that the buffering capacity of the OLED back support component (i.e., Super Clean Film, abbreviated as SCF) is insufficient. When dropping, steps, openings, back glue, and edges of foam in the middle frame of the whole machine impact the back of the display screen, resulting in the rupture of the OLED layer and failure phenomena such as bright broken points or black spots. The overall future trend of the industry is towards the development of thinner and lighter mobile phones, which poses new requirements for the display module: 1. The support component is thinned and lightened; 2. The gap between the screen and the middle frame is reduced, and the buffering capacity of the support component needs to be improved, and the requirement for the ball-drop buffering capacity is > 55 cm. Summary of the Invention

[0003] The present application provides a support component, a display screen, and an electronic device to reduce the thickness and weight of the support component and improve the ball-drop buffering capacity of the support component.

[0004] In a first aspect of the present application, a support component is provided for supporting a display screen. The support component includes at least two stacked layers, and along the direction away from the display screen, the modulus of each of the stacked layers gradually increases.

[0005] The above-mentioned support component is used to support the display screen. The support component includes at least two laminated layers. Along the direction away from the display screen, the modulus of each laminated layer gradually increases. That is to say, the laminated layers are arranged in a stacking scheme with a sequential modulus order. The laminated layer closer to the display screen has a smaller modulus and is more likely to deform, while the laminated layer farther from the display screen has a larger modulus and is less likely to deform. When the support component is impacted, the laminated layer far from the display screen is first impacted. The laminated layer far from the display screen only undergoes a slight deformation to absorb the impact energy, delaying the transfer of the impact energy to the next laminated layer, and fully exerting the drop ball buffering ability of this laminated layer. Then, the remaining energy is evenly dispersed and transferred to the next laminated layer, reducing the impact received by the next laminated layer, thereby further delaying the transfer of the impact energy and fully exerting the drop ball buffering ability of the next laminated layer. Thus, the drop ball buffering ability of each laminated layer can be fully exerted as much as possible, reducing the transfer of the impact energy to the next layer, so that the drop ball buffering ability of the support component can be improved while reducing the thickness of the support component. Since the laminated layers of the support component can be made of materials with lighter weights and the thickness of the support component is smaller, the weight of the support component can be reduced.

[0006] Optionally, the relationship between the drop ball ability of the support component and the single drop ball ability of each laminated layer satisfies the following relational formula: the drop ball ability of the support component ≈ the linear superposition of the single drop ball abilities of each laminated layer. When the total thickness of the support component 3 is determined, the thickness of each laminated layer can be allocated according to this formula to achieve the optimal design of the drop ball buffering ability.

[0007] Optionally, the linear superposition of the single drop ball abilities of each laminated layer - 2mm ≤ the drop ball ability of the support component ≤ the linear superposition of the single drop ball abilities of each laminated layer + 2mm. That is to say, the drop ball ability of the support component 3 only needs to be within the range of plus or minus 2mm of the linear superposition of the single drop ball abilities of each laminated layer, which can not only achieve the optimal design of the buffering ability of the support component 3 but also avoid excessive experimental times and increase the time cost and production cost.

[0008] Optionally, the thickness of the support component is 0.1mm to 0.3mm, which can not only meet the requirements of the drop ball buffering ability of the support component 3 but also keep the whole machine with a smaller thickness, meeting the requirements of thinning and weight reduction of the whole machine.

[0009] Optionally, the support assembly includes at least one buffer layer and at least one support layer. The modulus of the buffer layer is less than that of the support layer, and the buffer layer and the support layer are arranged in a direction away from the display screen. The support layer is made of a material with a higher modulus to increase the strength of the outer surface of the support assembly 3 and prevent damage such as scratches on the outer surface of the support assembly 3. Moreover, through the support layer that is not easily deformed, the impact energy can be evenly dispersed, thereby reducing the impact strength received by the buffer layer. The buffer layer is made of a material with a lower modulus, and the buffer layer absorbs the impact energy through elastic deformation, thereby reducing the impact energy transmitted to the surface of the display screen 1.

[0010] Optionally, the support assembly includes a first buffer layer and a second buffer layer. The modulus of the first buffer layer is less than that of the second buffer layer, and the first buffer layer and the second buffer layer are arranged in a direction away from the display screen. With two buffer layers, the buffering capacity of the support assembly is improved. The modulus of the first buffer layer is less than that of the second buffer layer, and the first buffer layer and the second buffer layer are arranged in a direction away from the display screen, enabling the impact energy to be absorbed layer by layer and giving full play to the buffering capacities of the first buffer layer and the second buffer layer.

[0011] Optionally, the material of the first buffer layer is foam. Foam has a series of characteristics such as large elasticity, light weight, flexible bending, ultra-thin volume, and reliable performance. By forming an isolation and protection effect on the surface of the support assembly close to the display screen, the impact stress received by the display screen is reduced.

[0012] Optionally, the material of the second buffer layer is polyurethane or silicone gel. Polyurethane and silicone gel can maintain elasticity within a large stable range for a long time, can play a moisture-proof, shock-proof, and insulation protection role for electronic components, and can extend the effective life of the support assembly.

[0013] Optionally, the support assembly includes a first support layer and a second support layer. The modulus of the first support layer is less than that of the second support layer, and the first support layer and the second support layer are arranged in a direction away from the display screen. With two support layers, the uniformity of the distribution of impact energy within the support assembly is improved, avoiding excessive local pressure. The modulus of the first support layer is less than that of the second support layer, and the first support layer and the second support layer are arranged in a direction away from the display screen, enabling the impact to be evenly distributed layer by layer and giving full play to the buffering capacities of the first support layer and the second support layer.

[0014] Optionally, the material of the first support layer is polyester, fiberglass, or polyimide. That is to say, the material of the first support layer is selected as a harder polymer material, which can not only form a reliable support effect but also play a role in weight reduction.

[0015] Optionally, the material of the second support layer is metal to form a surface with higher strength and prevent the surface of the support component from being scratched.

[0016] Optionally, the support component further includes a first adhesive layer located on the surface of the support component close to the display screen. The modulus of the first adhesive layer is smaller than that of the other laminations. That is to say, the support component is bonded to the surface of the display screen through the first adhesive layer with relatively large elasticity, enabling the first adhesive layer to play both the roles of bonding and buffering, and improving the buffering performance of the support component.

[0017] Optionally, adjacent laminations are bonded through a second adhesive layer. The modulus of the second adhesive layer is between the adjacent two laminations, forming a stacking order of moduli with the other laminations of the support component. While the second adhesive layer plays the role of bonding, its buffering ability can also be fully exerted, improving the buffering performance of the support component.

[0018] A second aspect of the present application provides a display module, which includes any one of the support components provided by the present application.

[0019] A third aspect of the present application provides an electronic device, which includes any one of the display modules provided by the present application.

[0020] It should be understood that the above general description and the following detailed description are only exemplary and do not limit the present application. Description of the Drawings

[0021] Figure 1 It is a schematic structural diagram of a display module in the prior art;

[0022] Figure 2 It is a schematic structural diagram of another display module in the prior art;

[0023] Figure 3 It is a schematic structural diagram of the display module provided by the embodiment of the present application;

[0024] Figure 4 It is a schematic diagram of the interfacial mechanics model according to the embodiment of the present application;

[0025] Figure 5 It is according to Figure 4 drawn curve;

[0026] Figure 6 It is a schematic structural diagram of the first group of experimental groups provided by the embodiment of the present application;

[0027] Figure 7 It is a schematic structural diagram of the second group of experimental groups provided by the embodiment of the present application;

[0028] Figure 8Structural schematic diagram of the first set of control groups provided by the embodiments of the present application;

[0029] Figure 9 Structural schematic diagram of the third set of experimental groups provided by the embodiments of the present application;

[0030] Figure 10 Structural schematic diagram of the second set of control groups provided by the embodiments of the present application;

[0031] Figure 11 Structural schematic diagram of the third set of control groups provided by the embodiments of the present application;

[0032] Figure 12 Structural schematic diagram of the fourth set of control groups provided by the embodiments of the present application;

[0033] Figure 13 Structural schematic diagram of the fifth set of control groups provided by the embodiments of the present application;

[0034] Figure 14 Structural schematic diagram of the sixth set of control groups provided by the embodiments of the present application;

[0035] Figure 15 Measured broken line graph of the laminated thickness distribution principle provided by the embodiments of the present application;

[0036] Figure 16 Structural schematic diagram of the laminated stacking structure of the first type of support component provided by the embodiments of the present application;

[0037] Figure 17 Structural schematic diagram of the laminated stacking structure of the second type of support component provided by the present application;

[0038] Figure 18 Structural schematic diagram of the laminated stacking structure of the third type of support component provided by the present application;

[0039] Figure 19 Structural schematic diagram of the laminated stacking structure of the fourth type of support component provided by the present application.

[0040] Reference numerals:

[0041] 1 - Display screen;

[0042] 2 - Cover plate;

[0043] 3 - Support component;

[0044] 31 - First adhesive layer;

[0045] 32 - First buffer layer;

[0046] 33 - Second buffer layer;

[0047] 34 - First support layer;

[0048] 35 - The second support layer;

[0049] 36 - The second adhesive layer.

[0050] The accompanying drawings here are incorporated into the specification and form a part of this specification, showing embodiments consistent with this application, and are used together with the specification to explain the principles of this application. Detailed implementation manners

[0051] To better understand the technical solutions of this application, the embodiments of this application will be described in detail below with reference to the accompanying drawings.

[0052] In a specific embodiment, the present application will be further described in detail below through specific embodiments in combination with the accompanying drawings.

[0053] The embodiments of this application provide an electronic device, which can be common mobile terminals such as mobile phones, tablet computers or wearable devices, and includes a display module for displaying text, images or videos, etc.

[0054] The display module provided in the embodiment of the present application includes a display screen 1, a screen cover 2 and a supporting component 3. The display screen 1 is used to display images, texts or videos, etc. The display screen 1 can be a flexible screen or a rigid screen. For example, the display screen 1 can be an organic light emitting diode (i.e., Organic Light Emitting Diode, abbreviated as OLED) display screen 1, an active-matrix organic light-emitting diode or an active-matrix organic light-emitting diode (i.e., active-matrix organic light-emitting diode, abbreviated as AMOLED) display screen 1, a mini light emitting diode (i.e., mini organic light-emitting diode) display screen 1, a micro light emitting diode (i.e., micro organic light-emitting diode) display screen 1, a micro organic light-emitting diode (i.e., micro organic light-emitting diode) display screen 1, a quantum dot light emitting diode (i.e., quantum dot light emitting diodes, abbreviated as QLED) display screen 1 or a liquid crystal display screen 1 (i.e., Liquid Crystal Display 1). Display, abbreviated as LCD) etc.; a screen cover 2 covers the light-transmitting side of the display screen 1 to improve the flatness of the surface of the display screen 1, the screen cover 2 forms a protective effect on the display screen 1, the screen cover 2 is light-transmitting, and the pattern displayed on the display screen 1 can be seen through the screen cover 2; a supporting component 3 is arranged on the backlight side of the display screen 1, for supporting the display screen 1, that is, the supporting component 3 is arranged on the side of the display screen 1 away from the screen cover 2, and the supporting component 3 supports and protects the display screen 1.

[0055] Among them, the support component 3 serves as a protective layer on the back of the display screen 1, which directly affects the impact of the steps, openings, adhesive backing, foam edges, etc. of the middle frame of the entire machine on the back of the display screen 1 when the electronic device falls. Insufficient buffering capacity of the support component 3 will cause failure phenomena such as broken bright spots or black spots when the electronic device falls. Therefore, structural optimization of the support component 3 has become one of the important improvement directions for improving the impact resistance of the display module.

[0056] refer to Figure 1, the support component 3 can adopt a multi-layer metal composite structure, and the metals of each layer are bonded by adhesives such as pressure sensitive adhesive (abbreviated as PSA) or embossing adhesive (abbreviated as EMBO). For example, the support component 3 is formed by laminating and compounding a first metal layer, a second metal layer, and a third metal layer. The first metal layer is Al, the second metal layer is SUS, and the third metal layer is Al. The first metal layer and the second metal layer, as well as the second metal layer and the third metal layer, are bonded by pressure sensitive adhesive or embossing adhesive. That is to say, no polymer buffer material is provided in the support component 3, and it relies entirely on the hardness of the metal to support and resist impact and extrusion. The rigidity of this structure is too high, and it is generally impossible to bend. After bending, the rebound force is extremely large, so it cannot be used for curved mobile phones. Moreover, since it completely relies on the metal rigidity to resist deformation and there is no buffer material to absorb energy, the buffering ability is insufficient. In addition, due to the extremely heavy weight of the metal, it is not conducive to reducing the weight of the whole machine.

[0057] Reference Figure 2 , the support component 3 can adopt a laminated structure composed of multiple materials compounded. For example, the support component 3 is compounded with multiple materials such as foam, polyimide (abbreviated as PI), or copper (Cu), and adhesives are used for interface bonding. The rigidity of Cu is used to resist impact and reduce the pressure; the foam is used to absorb dynamic impact and absorb the impact energy. The typical thickness and stacking scheme of each layer can be, for example, the support component 3 includes a first laminate, a second laminate, and a third laminate. The first laminate is PI, and the thickness of the first laminate is 20μm. The second laminate is foam, and the thickness of the second laminate is 80μm - 150μm. The third laminate is metal, and the thickness of the third laminate is 30μm - 70μm. The first laminate and the second laminate, as well as the second laminate and the third laminate, are bonded by pressure sensitive adhesive or embossing adhesive, and the thickness of the pressure sensitive adhesive or embossing adhesive is 15μm - 60μm. This structure is a structure of multiple materials compounded, with a relatively thick thickness, generally 0.24mm - 0.26mm, which is not conducive to thinning the whole machine, and the buffering ability is insufficient. The ball drop buffering ability is 40cm - 50cm. Especially, the stacking order of each laminate is not fixed, and the thickness of each laminate is not clear, so the buffering ability of the support component 3 has a large variation range, and it is difficult to give full play to the buffering ability of each laminate.

[0058] Such as Figure 3As shown in the figure, an embodiment of the present application provides a support component 3, which includes at least two laminated layers. Along the direction away from the display screen 1, the modulus of each laminated layer gradually increases. That is to say, the laminated layers are arranged in a stacking scheme with a sequential modulus order. The laminated layer closer to the display screen 1 has a smaller modulus and is more likely to deform, while the laminated layer farther from the display screen 1 has a larger modulus and is less likely to deform. When the support component 3 is impacted, the laminated layer away from the display screen 1 is impacted first. The laminated layer away from the display screen 1 only undergoes a slight deformation to absorb the impact energy, delaying the transmission of the impact energy to the next laminated layer, giving full play to the drop ball buffering ability of this laminated layer, and then evenly dispersing and transmitting the remaining energy to the next laminated layer, reducing the impact received by the next laminated layer, thereby further delaying the transmission of the impact energy and giving full play to the drop ball buffering ability of the next laminated layer. Thus, the drop ball buffering ability of each laminated layer can be fully utilized as much as possible, reducing the transmission of the impact energy to the next layer, so that the drop ball buffering ability of the support component 3 can be improved while reducing the thickness of the support component 3. Since the laminated layers of the support component 3 can be made of materials with a relatively light weight and the thickness of the support component 3 is small, the weight of the support component 3 can be reduced.

[0059] As Figure 4 shown is a schematic diagram of the interfacial mechanics model based on the embodiment of the present application. Among them, the laminated layer includes layer A and layer B. The thickness of layer A is H1, the Poisson's ratio is μ1, and the modulus is E1. The thickness of layer B is H2, the Poisson's ratio is μ2, and the modulus is E2. According to Figure 4 it can be known that the shear strain at the interface between layers A and B satisfies ε xy1 = ε xy2 . From the Poisson's ratio, ε z2 = μ1ε z1 / μ2 can be obtained; the kinematic equation is H1dε1 / dt + H2dε2 / dt = vt, and the dynamic equation is σ1dt = mdv. The solution becomes:

[0060]

[0061]

[0062] It can be seen therefrom that the smaller E2 / E1 is, the larger μ2 / μ1 is, and the larger H2 / H1 is, the smaller the force on layer B is.

[0063] According to the above conclusion, a curve graph is drawn as Figure 5 shown, where H1 = H2 and μ1 = μ2. According to Figure 5 it can be concluded that when the laminated layer structures satisfy the sequential modulus order, the stress on the display screen 1 is the smallest.

[0064] Figures 6 - 14For some of the experimental groups and control groups for actual measurement verification of the above conclusions, each experimental group or control group is the average value of the test results of a group of samples. Among them, Figure 6 Using the order of the compliance modulus, along the direction away from the display screen 1, each laminate is EMBO + FOAM + PI + Cu in sequence, and the measured ball-drop buffering ability is 31 mm; Figure 7 Also using the order of the compliance modulus, Figure 7 Different from Figure 6 is that the PI layer is removed, that is, along the direction away from the display screen 1, each laminate is EMBO + FOAM + Cu in sequence, and the measured ball-drop buffering ability is 31.3 mm; Figure 8 Not using the order of the compliance modulus, Figure 8 Different from Figure 6 is that the PI layer is closest to the display screen 1, that is, along the direction away from the display screen 1, each laminate is PI + EMBO + FOAM + Cu in sequence, and the measured ball-drop buffering ability is 30 mm; Figure 9 Also using the order of the compliance modulus, Figure 9 Different from Figure 6 is that the FOAM layer and the PI layer are removed, that is, along the direction away from the display screen 1, each laminate is EMBO + Cu in sequence, and the measured ball-drop buffering ability is 20 mm; Figure 10 Not using the order of the compliance modulus, Figure 10 Different from Figure 9 is that the order of two laminates is exchanged, that is, along the direction away from the display screen 1, each laminate is Cu + EMBO in sequence, and the measured ball-drop buffering ability is 15 mm; Figure 11 Not using the order of the compliance modulus, along the direction away from the display screen 1, the order of each laminate is METAL + PSA + METAL, and the measured ball-drop buffering ability is 12 mm; Figure 12 Not using the order of the compliance modulus, along the direction away from the display screen 1, the order of each laminate is METAL + FOAM + METAL, and the measured ball-drop buffering ability is 24 mm; Figure 13 Not using the order of the compliance modulus, along the direction away from the display screen 1, the order of each laminate is FOAM + METAL + FOAM, and the measured ball-drop buffering ability is 20 mm; Figure 14 Not using the order of the compliance modulus, along the direction away from the display screen 1, the order of each laminate is FOAM + PET + FOAM, and the measured ball-drop buffering ability is 30 mm.

[0065] According to the actual measurement verification results, when each laminate structure meets the order of the compliance modulus, the ball-drop buffering ability is the highest, that is, the stress on the display screen 1 is the smallest. The laminate stacking structure in the order of the compliance modulus is applicable to the stacking structure design of multiple layers such as two layers, three layers, and four layers, and the actual measurement is consistent with the theoretical conclusion.

[0066] Specifically, according toFigures 11 - 14 It can be seen that the drop ball buffering ability of the laminated structure without the modulus sequence is insufficient, generally within 30 mm; Figures 6 - 8 Comparing the test results of Figure 9 and Figure 10 and comparing the test results of Figure 6 and Figure 7 , it can be concluded that when the thickness is the same, adopting the modulus stacking sequence can improve the drop ball buffering ability; according to the comparison of

[0067] Continue to refer to Figure 3 , the support component 3 includes at least one buffer layer and at least one support layer. The modulus of the buffer layer is less than that of the support layer, and the buffer layer and the support layer are arranged along the direction away from the display screen 1; the support layer is made of a material with a higher modulus to increase the strength of the outer surface of the support component 3 and prevent damage such as scratches on the outer surface of the support component 3. Moreover, through the non-deformable support layer, the impact energy can be evenly dispersed, thereby reducing the impact strength received by the buffer layer; the buffer layer is made of a material with a lower modulus, and the buffer layer absorbs the impact energy through elastic deformation, thereby reducing the impact energy transmitted to the surface of the display screen 1.

[0068] Furthermore, the support component 3 includes a first buffer layer 32 and a second buffer layer 33. Through the two buffer layers, the buffering ability of the support component 3 is improved; the modulus of the first buffer layer 32 is less than that of the second buffer layer 33, and the first buffer layer 32 and the second buffer layer 33 are arranged along the direction away from the display screen 1, so that the impact energy can be absorbed layer by layer, and the buffering abilities of the first buffer layer 32 and the second buffer layer 33 can be fully exerted.

[0069] Furthermore, the material of the first buffer layer 32 is foam (FOAM). Foam has a series of characteristics such as large elasticity, light weight, flexible bending, ultra-thin volume, and reliable performance. An isolation and protection effect is formed on the surface of the support component 3 close to the display screen 1 through the foam, reducing the impact stress received by the display screen 1; the material of the second buffer layer 33 is polyurethane (TPU) or silicone gel. Polyurethane and silicone gel can maintain elasticity in a large stable range for a long time, can play a role in moisture-proof, shock-proof and insulation protection for electronic components, and can extend the effective life of the support component 3.

[0070] Further, the support component 3 includes a first support layer 34 and a second support layer 35. Through the two support layers, the uniformity of the distribution of impact energy within the support component 3 is improved, avoiding excessive local pressure. The modulus of the first support layer 34 is less than that of the second support layer 35. The first support layer 34 and the second support layer 35 are arranged in a direction away from the display screen 1, enabling the impact to be evenly distributed layer by layer and fully exerting the buffering capabilities of the first support layer 34 and the second support layer 35.

[0071] Further, the material of the first support layer 34 is polyester (PET), glass fiber, or polyimide (PI). That is to say, the material of the first support layer 34 is selected as a relatively hard polymer material, which can not only form a reliable support but also achieve a weight reduction effect. The material of the second support layer 35 is metal to form a surface with higher strength and prevent the surface of the support component 3 from being scratched.

[0072] Further, the support component 3 further includes a first adhesive layer 31. The first adhesive layer 31 is located on the surface of the support component 3 close to the display screen 1. The modulus of the first adhesive layer 31 is less than that of the other laminated layers. That is to say, the support component 3 is adhered to the surface of the display screen 1 through the first adhesive layer 31 with relatively large elasticity, enabling the first adhesive layer 31 to play both an adhesive and a buffering role and improving the buffering performance of the support component 3.

[0073] Further, adjacent laminated layers are adhered through a second adhesive layer 36. The modulus of the second adhesive layer 36 is between the adjacent two laminated layers, forming a stacking order of modulus compliance between the second adhesive layer 36 and the other laminated layers of the support component 3. While the second adhesive layer 36 plays an adhesive role, its buffering ability can also be fully exerted, improving the buffering performance of the support component 3.

[0074] Furthermore, the thickness of the support component 3 is 0.1 mm to 0.3 mm. For example, the thickness of the support component 3 can be 0.1 mm, 0.11 mm, 0.12 mm, 0.13 mm, 0.14 mm, 0.15 mm, 0.16 mm, 0.17 mm, 0.18 mm, 0.19 mm, 0.20 mm, 0.21 mm, 0.22 mm, 0.23 mm, 0.24 mm, 0.25 mm, 0.26 mm, 0.27 mm, 0.28 mm, 0.29 mm, or 0.3 mm, etc. This can not only ensure that the ball-drop buffering ability of the support component 3 meets the requirements but also keep the overall thickness of the machine small, meeting the requirements of reducing the thickness and weight of the whole machine. When the thickness of the support component 3 is less than 0.1 mm, the thickness of the support component 3 is too small, and each layer has a small thickness, resulting in a small linear superposition of the ball-drop ability of each single layer, making it difficult for the actual ball-drop ability of the support component 3 to meet the requirements. When the thickness of the support component 3 is greater than 0.3 mm, although the support component 3 can have a high ball-drop buffering ability, the excessive thickness leads to an increase in the thickness and weight of the whole machine, making it difficult to meet the requirements of reducing the thickness and weight of the whole machine.

[0075] To ensure a reasonable match of the thickness between each layer and to optimize the ball-drop buffering ability of the support component 3 while keeping the thickness unchanged, the embodiments of this application conducted experimental tests in the following manner: Along the direction away from the display screen 1, the layers of the support component 3 are, in sequence, the first layer EMB, the second layer FOAM, and the third layer Cu. With the total thickness of the support component 3 determined, several different thickness distributions are made for each layer. After each distribution, the linear superposition of the ball-drop ability of each single layer (denoted as the predicted value of single-layer superposition) is calculated, and the ball-drop ability of the support component 3 is measured (denoted as the experimental value); Among the multiple different thickness distribution methods, the group with the predicted value of single-layer superposition closest to the experimental value is found, and a line graph is drawn as Figure 15 .

[0076] Among them, a set of specific experimental test results are shown in Table 1, where the total thickness of the support component 3 in the table is 0.22 mm. According to the data in Table 1, it can be seen that Scheme 1 is the group with the predicted value of single-layer superposition closest to the experimental value, and this set of data is plotted in Figure 15 .

[0077] Table 1

[0078]

[0079]

[0080] According to Figure 15It can be seen that the upper limit of the ball-drop buffering ability of the support component 3 is approximately equal to the linear superposition of the ball-drop abilities of each layer of monomer materials, that is, the ball-drop ability of the support component 3 ≈ the linear superposition of the ball-drop abilities of each monomer in the laminated layers. Thus, a laminated thickness distribution principle is formed. When the total thickness of the support component 3 is determined, the thickness of each laminated layer can be distributed according to this formula to achieve the optimal design of the ball-drop buffering ability.

[0081] Specifically, the ball-drop energy is gravitational potential energy, that is, E = mgh, where m is the mass of the ball, g is the acceleration due to gravity, and h is the height of the ball drop. Thus, it can be seen that the ball-drop ability has a linear relationship with the height. The total ball-drop ability of the laminated layers ≈ the linear superposition of the ball-drop abilities of each layer of monomers, which means that the energy absorbed by the laminated layers ≈ the linear superposition of the energies that each layer of monomers can absorb, and it also means that the buffering ability of each layer is maximally exerted, and the energy of each layer is completely absorbed and not transmitted to the next layer. As a result, the impact energy cannot be transmitted to the display screen 1, and the display screen 1 will not be damaged such as cracked.

[0082] Based on the above laminated thickness distribution principle, this application has optimized the material and thickness distribution. Compared with the traditional solution, the thickness has been reduced by 40% (for example, the thickness is reduced from 0.26 to 0.16), the buffering ability has been increased by 60% (for example, the buffering ability is reduced from 55 cm to 88 cm), and the weight has been reduced by 15%. In this way, while reducing the thickness and weight, the buffering ability is improved, greatly enhancing the competitiveness of the screen reliability, and thus overcoming the low-reliability problem of the existing solutions.

[0083] Furthermore, when the total thickness of the support component 3 is determined, the thickness distribution of each laminated layer can be determined by the following method: Step S1, randomly distribute the thickness of each laminated layer and calculate the linear superposition of the ball-drop abilities of each laminated layer. Step S2, test the actual ball-drop ability of the support component 3 and compare whether the actual ball-drop ability is close to the linear superposition of the ball-drop abilities of each laminated layer (the close range can be set by itself according to the requirements of the actual buffering ability, such as ±0.5 mm, ±1 mm, ±1.5 mm, ±2 mm, ±2.5 mm or ±3 mm, etc.). Step S3, when the actual ball-drop ability is close to the linear superposition of the ball-drop abilities of each laminated layer, it is determined that the laminated thickness distribution meets the requirements and the experiment is terminated; when the actual ball-drop ability is not close to the linear superposition of the ball-drop abilities of each laminated layer, it is determined that the laminated thickness distribution does not meet the requirements, and go to Step S4. Step S4, adjust the thickness of each laminated layer and repeat Steps S1 to S3.

[0084] In one embodiment, the ball drop ability of each laminate is linearly superimposed, and -2 mm ≤ the ball drop ability of the support component 3 ≤ the linear superposition of the ball drop abilities of each laminate + 2 mm. That is to say, the ball drop ability of the support component 3 only needs to be within the range of plus or minus 2 mm of the linear superposition of the ball drop abilities of each laminate monomer. This can not only optimize the design of the buffering ability of the support component 3 but also avoid excessive experimental times and increase the time cost and production cost.

[0085] Some specific embodiments provided by this application are as follows:

[0086] Embodiment 1

[0087] As Figure 16 shown, the laminates of the support component 3 are, in order from the direction away from the display screen 1: OCA / EMBO, that is, optical adhesive / mesh adhesive, for bonding, with a thickness of 15 μm to 150 μm; FOAM, that is, foam, for buffering, with a thickness of 50 μm to 180 μm; OCA / EMBO, that is, optical adhesive / mesh adhesive, for bonding, with a thickness of 15 μm to 60 μm; TPU / silicone gel, that is, polyurethane / silicone gel, for buffering, with a thickness of 50 μm to 150 μm; OCA / EMBO, that is, optical adhesive / mesh adhesive, for bonding, with a thickness of 15 μm to 60 μm; PET / glass fiber / PI, that is, polyester / glass fiber / polyimide, a relatively hard polymer film material, for support, with a thickness of 20 μm to 100 μm; OCA / EMBO, that is, optical adhesive / mesh adhesive, for bonding, with a thickness of 15 μm to 60 μm; metal, for support, with a thickness of 30 μm to 70 μm. The stacking order of the laminates satisfies the order of moduli, and the specific thickness of each layer can be allocated according to the principle of laminate thickness distribution. Among them, not every layer in the support component 3 is necessary, but can be reasonably increased or decreased according to the actual situation. That is to say, the number of laminates of the support component 3 can be 2 layers, 3 layers, 4 layers..., and so on. As long as the stacking of each laminate satisfies the order of moduli. For example, some optional embodiments are as follows:

[0088] Embodiment 2

[0089] As Figure 17 shown, the laminates of the support component 3 are, in order from the direction away from the display screen 1: OCA / EMBO, that is, optical adhesive / mesh adhesive, for bonding, with a thickness of 100 μm to 200 μm; metal, for support, with a thickness of 30 μm to 70 μm. The stacking order of the laminates satisfies the order of moduli, and the specific thickness of each layer can be allocated according to the principle of laminate thickness distribution.

[0090] Embodiment 3

[0091] As Figure 18As shown in the figure, the respective laminations of the support component 3, in the direction away from the display screen 1, are as follows: OCA / EMBO, that is, optical adhesive / mesh adhesive, for bonding, with a thickness of 15 μm to 150 μm; TPU / silicone gel, that is, polyurethane / silicone gel, for buffering, with a thickness of 50 μm to 150 μm; OCA / EMBO, that is, optical adhesive / mesh adhesive, for bonding, with a thickness of 15 μm to 60 μm; metal, for support, with a thickness of 30 μm to 70 μm. The stacking order of the laminations satisfies the order of increasing modulus, and the specific thicknesses of each layer can be allocated according to the principle of lamination thickness distribution.

[0092] Example 4

[0093] As Figure 19 shown in the figure, the respective laminations of the support component 3, in the direction away from the display screen 1, are as follows: OCA / EMBO, that is, optical adhesive / mesh adhesive, for bonding, with a thickness of 15 μm to 150 μm; TPU / silicone gel, that is, polyurethane / silicone gel, for buffering, with a thickness of 50 μm to 150 μm; metal, for support, with a thickness of 30 μm to 70 μm. Among them, the metal and the TPU / silicone gel are integrally formed, so that no adhesive is required for bonding. The stacking order of the laminations satisfies the order of increasing modulus, and the specific thicknesses of each layer can be allocated according to the principle of lamination thickness distribution.

[0094] It should be noted that a part of this patent application document contains content protected by copyright. Except for making copies of the patent documents of the patent office or the patent records, the copyright owner retains the copyright.

Claims

1. A support component for supporting a display screen, characterized in that, The support assembly includes at least two laminations, and the at least two laminations include a first adhesive layer, a second adhesive layer, at least one buffer layer, and at least one support layer. The first adhesive layer is located on the surface of the support assembly close to the display screen. The modulus of the first adhesive layer is less than the modulus of the first buffer layer. The modulus of the at least one buffer layer is less than the modulus of the at least one support layer. The at least one buffer layer and the at least one support layer are arranged along the direction away from the display screen. The at least one buffer layer includes a first buffer layer and a second buffer layer. The modulus of the first buffer layer is less than the modulus of the second buffer layer. The first buffer layer and the second buffer layer are arranged along the direction away from the display screen. The first buffer layer and the second buffer layer are bonded through the second adhesive layer, and the modulus of the second adhesive layer is between the modulus of the first buffer layer and the modulus of the second buffer layer.

2. The support assembly according to claim 1, wherein The relationship between the ball-drop ability of the support assembly and the ball-drop ability of each lamination monomer satisfies the following relational expression: the ball-drop ability of the support assembly ≈ linear superposition of the ball-drop abilities of each lamination monomer.

3. The support assembly according to claim 2, wherein, Linear superposition of the ball-drop abilities of each lamination monomer - 2 mm ≤ the ball-drop ability of the support assembly ≤ linear superposition of the ball-drop abilities of each lamination monomer + 2 mm.

4. The support assembly according to claim 1, wherein The thickness of the support assembly is 0.1 mm to 0.3 mm.

5. The support assembly according to any one of claims 1-4, characterized in that, The thickness of the first buffer layer is 50 μm to 180 μm; and / or, The thickness of the second buffer layer is 50 μm to 150 μm; and / or, The thickness of at least one support layer is 30 μm to 70 μm.

6. The support assembly according to any one of claims 1-4, characterized in that The material of the at least one support layer is metal.

7. The support assembly according to any one of claims 1-4, characterized in that, The material of the first buffer layer is foam.

8. The support assembly according to any one of claims 1-4, characterized in that The material of the second buffer layer is polyurethane or silicone gel.

9. The support assembly according to any one of claims 1-4, characterized in that, The support assembly includes a first support layer and a second support layer. The modulus of the first support layer is less than the modulus of the second support layer. The first support layer and the second support layer are arranged along the direction away from the display screen.

10. The support assembly according to claim 9, wherein, The material of the first support layer is polyester, glass fiber, or polyimide.

11. The support assembly according to claim 9, wherein The material of the second support layer is metal.

12. The support assembly according to any one of claims 1-4, characterized in that, The thickness of the first adhesive layer is 15 μm to 150 μm.

13. A display module, characterized in that, It includes the support assembly according to any one of claims 1 - 12.

14. An electronic device, characterized in that, It includes the display module according to claim 13.

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