Vehicle-mounted display screen adhesive layer selection method, display screen structure and automobile

Abstract

The application discloses a selection method of a vehicle-mounted display screen glue layer, a display screen structure and a vehicle. The selection method comprises the following steps: providing a display screen, a structural member and a first glue layer, the inner side surface of the display screen is provided with a glue coating area at the periphery and the middle part; the first glue layer is coated on the glue coating area, and the display screen and the structural member are bonded by the first glue layer to form an assembly tool; the assembly tool is heated or cooled, and the separation between the display screen and the structural member is observed to determine whether the first glue layer is suitable for being applied to the glue coating area. The application aims to solve the problem that the existing vehicle display screen is bonded by using the same type of glue layer, and is prone to falling off and separation under the influence of different environmental factors.

Description

Technical Field

[0001] This invention relates to the field of automotive parts technology, specifically to a method for selecting adhesive layers for vehicle-mounted displays, a display structure, and an automobile. Background Technology

[0002] With the increasing prevalence of automotive displays, new demands are emerging, such as narrow bezels, thinness, high contrast, and wide color gamut. OLED screens, initially used in consumer products, are gradually entering the automotive field, naturally becoming a new solution due to their combination of advantages. While current narrow-bezel OLED screens achieve thinness, they typically rely on a single type of adhesive for bonding, which can lead to issues like delamination under various conditions, such as high / low temperatures, vibration, and impact. Summary of the Invention

[0003] The main objective of this invention is to propose a method for selecting adhesive layers for automotive displays, a display structure, and an automobile, aiming to solve the problem that existing automotive displays, which use the same type of adhesive layer for bonding, are prone to detachment and separation under different environmental factors.

[0004] To achieve the above objectives, the present invention proposes a method for selecting an adhesive layer for an automotive display screen, comprising the following steps:

[0005] A display screen, structural components, and a first adhesive layer are provided, wherein the periphery and near-center portion of the inner side of the display screen form an adhesive application area;

[0006] The first adhesive layer is applied to the adhesive area, and the display screen and the structural component are bonded together through the first adhesive layer to form an assembly fixture;

[0007] The assembly fixture is heated or cooled, and the separation between the display screen and the structural component is observed to determine whether the first adhesive layer is suitable for application in the adhesive application area.

[0008] Optionally, the step of heating or cooling the assembly fixture and observing the separation between the display screen and the structural component to determine whether the first adhesive layer is suitable for application in the adhesive application area includes:

[0009] Heat the assembly fixture to a first preset temperature and observe the separation between the display screen and the structural component.

[0010] If separation occurs, a second adhesive layer is provided, and the second adhesive layer is used to glue the debonded area.

[0011] If no separation occurs, the first adhesive layer is applied to the adhesive application area.

[0012] Optionally, after the step of providing a second adhesive layer and using the second adhesive layer to bond the debonded area if separation occurs, the method further includes:

[0013] The assembly fixture bonded by the second adhesive layer is reheated to the first preset temperature, and the separation of the corresponding debonded area between the display screen and the structural component is observed to determine whether the second adhesive layer is suitable for application in the debonded area.

[0014] Optionally, the step of heating or cooling the assembly fixture and observing the separation between the display screen and the structural component to determine whether the first adhesive layer is suitable for application in the adhesive application area includes:

[0015] Cool the assembly fixture to a second preset temperature and observe the separation between the display screen and the structural component.

[0016] If separation occurs, a third adhesive layer is provided, and the third adhesive layer is used to glue the debonded area.

[0017] If no separation occurs, the first adhesive layer is applied to the adhesive application area.

[0018] Optionally, if separation occurs, a third adhesive layer is provided, and after the step of using the third adhesive layer to glue the debonded area, the method further includes:

[0019] The assembly fixture bonded by the third adhesive layer is cooled again to the second preset temperature, and the separation of the corresponding debonded area between the display screen and the structural component is observed to determine whether the third adhesive layer is suitable for application in the debonded area.

[0020] Optionally, after the step of applying the first adhesive layer to the adhesive-coated area and bonding the display screen and the structural component together using the first adhesive layer to form an assembly tooling, the method further includes:

[0021] Provide pull-out force testing equipment;

[0022] The assembly tooling is subjected to a pull-out force test using the pull-out force testing device. The separation between the display screen and the structural component is observed to determine whether the first adhesive layer is suitable for application in the adhesive area.

[0023] Optionally, after the step of applying the first adhesive layer to the adhesive-coated area and bonding the display screen and the structural component together using the first adhesive layer to form an assembly tooling, the method further includes:

[0024] Provide impact testing equipment;

[0025] The assembly tooling is subjected to an impact test using the impact testing device, and the separation between the display screen and the structural component is observed to determine whether the first adhesive layer is suitable for application in the adhesive area.

[0026] The present invention also proposes a display screen structure, which is manufactured using the above-described method for selecting adhesive layers for automotive display screens;

[0027] The display screen structure includes:

[0028] The display screen has an adhesive coating area formed on its periphery and near the center.

[0029] An adhesive layer comprising at least two adhesives, the adhesive layer being applied to the adhesive application area; and,

[0030] A structural component, which is bonded to the display screen.

[0031] Optionally, the adhesive layer includes hot melt adhesive and double-sided adhesive.

[0032] The present invention also proposes an automobile comprising a display screen structure as described above.

[0033] In the technical solution of the present invention, the first adhesive layer is first selected, and the display screen and the structural component are bonded together by the first adhesive layer to form the assembly fixture. Then, the assembly fixture is heated or cooled, and the separation between the display screen and the structural component is observed to determine whether the first adhesive layer is suitable for application in the adhesive area. Attached Figure Description

[0034] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the structures shown in these drawings without creative effort.

[0035] Figure 1 A flowchart illustrating an embodiment of the method for selecting adhesive layers for vehicle-mounted displays provided by the present invention;

[0036] Figure 2 A schematic diagram of an embodiment of the display screen structure provided by the present invention;

[0037] Figure 3 This is a distribution diagram of the stress effect of the hot melt adhesive with a modulus of 4717 MPa at -40℃ in this invention;

[0038] Figure 4This is a distribution diagram of the stress effect of the hot melt adhesive with a modulus of 1180 MPa at -40℃ in this invention;

[0039] Figure 5 This is a stress distribution diagram of the ink layer when the hot melt adhesive and the display screen are not completely bonded at 85°C in this invention.

[0040] Figure 6 This is a force analysis diagram of the metal frame of the display screen of the present invention when it warps;

[0041] Figure 7 This is a distribution diagram of an embodiment of the effect of hot melt adhesive bonding width on stress at -40℃ in this invention;

[0042] Figure 8 This is a distribution diagram of another embodiment of the effect of hot melt adhesive bonding width on stress at -40℃ in this invention;

[0043] Figure 9 This is a distribution diagram showing the effect of the bonding height of the -40℃ hot melt adhesive on stress in this invention;

[0044] Figure 10 This is a distribution diagram of the effect of thermal expansion coefficient mismatch in this invention;

[0045] Figure 11 This is a summary data chart of the stress effect of hot melt adhesive at -40℃ in this invention.

[0046] Explanation of icon numbers:

[0047] label name label name 1 Display screen 3 double-sided tape 2 hot melt adhesive

[0048] The realization of the objective, functional features and advantages of the present invention will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0049] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0050] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0051] Furthermore, if the embodiments of this invention involve descriptions such as "first" or "second," these descriptions are for descriptive purposes only and should not be construed as indicating or implying their relative importance or implicitly specifying the number of technical features indicated. Therefore, a feature defined with "first" or "second" may explicitly or implicitly include at least one of those features. Additionally, the meaning of "and / or" throughout the text includes three parallel solutions; for example, "A and / or B" includes solution A, solution B, or a solution where both A and B are satisfied simultaneously. Furthermore, the technical solutions of the various embodiments can be combined with each other, but this must be based on the ability of those skilled in the art to implement them. When the combination of technical solutions is contradictory or impossible to implement, it should be considered that such a combination of technical solutions does not exist and is not within the scope of protection claimed by this invention.

[0052] With the increasing prevalence of automotive displays, new demands are emerging, such as narrow bezels, thinness, high contrast, and wide color gamut. OLED screens, initially used in consumer products, are gradually entering the automotive field, naturally becoming a new solution due to their combination of advantages. While current narrow-bezel OLED screens achieve thinness, they typically rely on a single type of adhesive for bonding, which can lead to issues like delamination under various conditions, such as high / low temperatures, vibration, and impact.

[0053] In view of this, the present invention proposes a method for selecting the adhesive layer of an automotive display screen. Figures 1 to 4 This is one embodiment of the present invention.

[0054] Please see Figure 1 The method for selecting the adhesive layer of the vehicle display screen includes the following steps:

[0055] S1: Provides a display screen 1, a structural component, and a first adhesive layer, wherein the periphery and the portion near the center of the inner side of the display screen 1 form an adhesive application area;

[0056] S2: Apply the first adhesive layer to the adhesive application area, and bond the display screen 1 and the structural component together through the first adhesive layer to form an assembly fixture;

[0057] S3: Heat or cool the assembly fixture and observe the separation between the display screen 1 and the structural component to determine whether the first adhesive layer is suitable for application in the adhesive application area.

[0058] In the technical solution of the present invention, the first adhesive layer is first selected, and the display screen 1 and the structural component are bonded together by the first adhesive layer to form the assembly fixture. Then, the assembly fixture is heated or cooled, and the separation between the display screen 1 and the structural component is observed to determine whether the first adhesive layer is suitable for application in the adhesive area.

[0059] An adhesive coating area is formed on the periphery and near the center of the inner side of the display screen 1. Under different temperatures, according to the shear stress calculation formula F=(G×S×A)÷d, where F is shear stress, G is shear modulus, S is surface displacement, A is cross-sectional area, and d is thickness, it can be seen that the first adhesive layer will have different delamination sites under different conditions due to the influence of different factors.

[0060] Furthermore, the type of the first adhesive layer is not limited; it can be double-sided tape 3 or hot melt adhesive 2, etc. In one embodiment of the present invention, the first adhesive layer is hot melt adhesive 2 for the experiment.

[0061] Therefore, step S3: heating or cooling the assembly fixture and observing the separation between the display screen 1 and the structural component to determine whether the first adhesive layer is suitable for application in the adhesive application area includes:

[0062] Step S31: Heat the assembly fixture to a first preset temperature and observe the separation between the display screen 1 and the structural component;

[0063] Step S32: If separation occurs, a second adhesive layer is provided, and the second adhesive layer is used to bond the debonded area;

[0064] Step S33: If no separation occurs, select the area to apply the first adhesive layer.

[0065] Specifically, the separation of the first adhesive layer is observed by heating. If separation occurs, a second adhesive layer is selected to bond the debonded area. If no separation occurs, it indicates that the first adhesive layer is suitable for application to the adhesive area under heating conditions.

[0066] The display screen 1 has two opposite short sides and two opposite long sides around its perimeter. Due to the different expansion amounts between the display screen 1 and the structural components under high temperatures, the hot melt adhesive 2 is prone to misalignment. This can also lead to a decrease in the adhesion between the hot melt adhesive 2 and the ink layer on the back of the display screen 1. Since the shear force caused by the misalignment of the hot melt adhesive 2 is greater than the adhesion between the hot melt adhesive 2 and the ink layer, the hot melt adhesive 2 is easily peeled off from the ink layer, ultimately resulting in its separation. Similarly, the low surface energy of the ink layer of the display screen 1 leads to a decrease in the adhesion between the hot melt adhesive 2 and the ink layer. This results in excessive shear force at the two opposite short sides of the display screen 1, making the hot melt adhesive 2 prone to delamination under high temperatures. Reducing the shear modulus, surface displacement, and cross-sectional area, or increasing the thickness of the adhesive material, can reduce the shear stress between the materials, helping to solve the delamination problem. Simultaneously, increasing the surface energy of the ink layer can increase the adhesive strength of the glue, also improving the delamination problem. In the above-mentioned heating technology, the hot melt adhesive 2 desorbs from the ink layer at the two opposite short sides of the display screen 1. In one embodiment of the present invention, a second adhesive layer with strong shear resistance is selected to bond the desorbed parts, such as double-sided tape 3.

[0067] Further, after step S32: if separation occurs, providing a second adhesive layer and using the second adhesive layer to bond the debonded area, the method further includes:

[0068] Step S321: The assembly fixture bonded by the second adhesive layer is reheated to the first preset temperature, and the separation of the corresponding debonded area between the display screen 1 and the structural component is observed to determine whether the second adhesive layer is suitable for application in the debonded area.

[0069] Since the second adhesive layer has a greater shear strength than the first adhesive layer, when the assembly tooling is reheated to the first preset temperature, the delamination area in the aforementioned delamination region will not delaminate again.

[0070] The temperature range of the first preset temperature is not limited, and it can be between 80°C and 90°C. Specifically, in one embodiment of the present invention, the first preset temperature is 85°C. When the first preset temperature is 85°C, the assembly tooling is subjected to an 85°C high-temperature aging test.

[0071] Further, step S3: heating or cooling the assembly fixture and observing the separation between the display screen 1 and the structural component to determine whether the first adhesive layer is suitable for application in the adhesive application area includes:

[0072] Step S34: Cool the assembly fixture to a second preset temperature and observe the separation between the display screen 1 and the structural component;

[0073] Step S35: If separation occurs, a third adhesive layer is provided, and the third adhesive layer is used to bond the debonded area;

[0074] Step S36: If no separation occurs, select the area to apply the first adhesive layer.

[0075] At low temperatures, the different shrinkage rates between the display screen 1 and the structural component can easily lead to misalignment of the hot melt adhesive 2. Similarly, the shear modulus and adhesive force of the hot melt adhesive 2 increase at low temperatures. This misalignment causes shear forces that can tear the ink layer from the display screen 1. Furthermore, the adhesive path formed on the display screen 1 also increases shear forces, making it easier for the first adhesive layer near the center of the display screen 1 to tear the ink layer from the display screen 1. Accordingly, reducing the shear modulus, surface displacement, and cross-sectional area, or increasing the thickness of the adhesive material can reduce the shear stress between the materials, helping to solve the delamination problem.

[0076] In one embodiment of the present invention, the ink layer peels off and delaminates due to the rapid increase in the modulus of the hot melt adhesive 2 under low temperature conditions. Similarly, double-sided adhesive 3 with little change in modulus is used to reduce the shear stress on the ink layer, thereby solving the problem of ink peeling off and delamination under low temperature conditions.

[0077] That is, the third adhesive layer can be the same as the second adhesive layer described above, and is also set as double-sided adhesive 3.

[0078] Furthermore, after step S35, where a third adhesive layer is provided and the debonded area is glued using the third adhesive layer if separation occurs, the process further includes:

[0079] Step S351: Cool the assembly fixture bonded by the third adhesive layer back to the second preset temperature, and observe the separation of the corresponding debonded area between the display screen 1 and the structural component to determine whether the third adhesive layer is suitable for application in the debonded area.

[0080] Since the modulus of the selected third adhesive layer does not change much, when the assembly tooling is reheated to the second preset temperature, the delamination area in the aforementioned delamination region will not delaminate again.

[0081] The temperature range of the second preset temperature is not limited, and it can be between -35°C and -45°C. Specifically, in one embodiment of the present invention, the second preset temperature is -40°C; and when the second preset temperature is -40°C, the assembly tooling is subjected to a -40°C low-temperature storage experiment.

[0082] Further, after step S2: applying the first adhesive layer to the adhesive-coated area and bonding the display screen 1 and the structural component together using the first adhesive layer to form an assembly fixture, the method further includes:

[0083] Step S4: Provide a pull-out force testing device;

[0084] Step S5: Perform a pull-out force test on the assembly tooling using the pull-out force testing device, and observe the separation between the display screen 1 and the structural component to determine whether the first adhesive layer is suitable for application in the adhesive application area.

[0085] Among them, when impact and vibration occur at normal temperature and high temperature, the display screen 1 and the structural component are prone to delamination. The reason is that the design did not reserve twice the safety margin according to the 50G acceleration at high temperature, the design margin was insufficient, the adhesive force was not tested and verified by a tensile tester in the production product, the adhesive force formed by the adhesive was less than the design value, and the low surface energy of the ink surface resulted in the adhesive effect not reaching the optimal level.

[0086] Therefore, in this embodiment, the pull-out force testing device is provided to test the assembly tooling to ensure that the pull-out force is greater than the design margin value.

[0087] Furthermore, it is not guaranteed that the display screen 1 and the structural component will not easily delaminate in the event of impact and vibration; the adhesive strength of the glue under high temperature conditions or the surface energy of the ink can be increased to increase the adhesive strength.

[0088] Further, after step S2: applying the first adhesive layer to the adhesive-coated area and bonding the display screen 1 and the structural component together using the first adhesive layer to form an assembly fixture, the method further includes:

[0089] Step S6: Provide an impact force testing device;

[0090] Step S7: Perform an impact force test on the assembly tooling using the impact force testing device, and observe the separation between the display screen 1 and the structural component to determine whether the first adhesive layer is suitable for application in the adhesive area.

[0091] When the airbag is deployed, it impacts the display screen 1, causing the entire assembly to come apart and the display screen 1 to fall from the structural components. The principle is that when the airbag impacts the display screen 1, it creates a strong instantaneous impact force. The impact force causes the structural components to deform violently in an instant. The display screen 1 has a large modulus and does not deform with the structural components. The hot melt adhesive 2 is violently twisted in an instant, causing the display screen 1 to fall from the structural components. In addition, the hot melt adhesive 2 has poor impact resistance and cracks instantly under impact conditions.

[0092] Therefore, in this embodiment, the deformation of the product under impact can be reduced by increasing the strength of the structural components, or by using adhesives with high impact resistance, or by using adhesives with high impact resistance and increasing the strength of the structural components simultaneously. The impact force testing device is provided to test the assembly tooling to ensure that the impact force does not cause the adhesive to separate.

[0093] In the above-mentioned pull-out force testing device and impact force testing device, hot melt adhesive 2 can be used to bond the two opposite long sides of the display screen 1. This takes advantage of the fact that the adhesive force of hot melt adhesive 2 is much greater than that of double-sided adhesive 3, and solves the problem of adhesive force by not causing the adhesive to come unglued on the two opposite long sides.

[0094] In addition, please see Figures 3 to 11 This is a data analysis of one embodiment of the experiments conducted in this invention. In one embodiment, the first adhesive layer comprises a hot melt adhesive. Please refer to [link to relevant documentation]. Figures 3 to 4 Since the ink layer above the hot melt adhesive is a high tensile stress area, the concentrated stress can be effectively reduced by lowering the modulus of the hot melt adhesive at -40℃. Figure 5 Data analysis shows that the stress on the ink layer of the hot melt adhesive is less than 5 MPa at 85°C. Figure 6 Data analysis shows that when the metal frame of the display screen warps downward by 3mm, it will introduce a stress of 1.9-2.1MPa. Figure 7 Data analysis shows that at -40℃, narrowing the width of the hot melt adhesive bonding introduces more stress. When the width is reduced by 50%, the stress increases by 21%-23%, as shown in the figure, where the stress increases from 25.5 MPa to 31 MPa. Figure 8 Data analysis shows that at -40℃, poor bonding width of hot melt adhesive will introduce additional local stress, which will increase by 25%-27%. As shown in the figure, the stress increases from 19 MPa to 24 MPa. Figure 9 Data analysis shows that increasing the height of hot melt adhesive can reduce stress. The figure shows that when the height of hot melt adhesive is increased from 0.4 mm to 0.8 mm, the stress will decrease from 25.5 MPa to 19 MPa, a reduction of 25%-27%. Figure 10 Data analysis shows that a mismatch in the coefficient of thermal expansion can cause a significant increase in stress.

[0095] Figure 11The following is a summary of stress effects at -40°C in an embodiment of the experiment conducted for this invention. Data analysis shows that low-modulus hot melt adhesive can significantly reduce stress. When the modulus is reduced from 4717 MPa to 1180 MPa, the stress is reduced by 51%-53%, i.e., from 53 MPa to 25.5 MPa. When the height of the hot melt adhesive is increased from 0.4 mm to 0.8 mm, the stress is reduced from 25.5 MPa to 19 MPa, a reduction of 25%-27%. When the hot melt adhesive is poorly bonded, the local stress increases by 25%-27%, i.e., from 19 MPa to 24 MPa. The narrower the width of the hot melt adhesive, the greater the stress. Reducing the width by 50% increases the stress by 21%-23%, i.e., from 25.5 MPa to 31 MPa.

[0096] Please see Figure 2 The present invention also proposes a display screen structure, which is manufactured using the method for selecting the adhesive layer of the vehicle-mounted display screen described above; the display screen structure includes a display screen 1, an adhesive layer, and structural components.

[0097] The display screen 1 has an adhesive application area formed on its periphery and near the center; the adhesive layer includes at least two types of adhesives, which are applied to the adhesive application area; the structural component is bonded to the display screen 1. This method of using separate areas and adhesive materials solves the problem of adhesive separation while ensuring the product's adhesion, and also does not increase the bezel width of the display screen 1.

[0098] Furthermore, the adhesive layer includes hot melt adhesive 2 and double-sided adhesive 3. The hot melt adhesive 2 is applied to the two opposite long sides of the display screen 1, and the double-sided adhesive 3 is bonded to the two opposite short sides of the display screen 1 and a position near its center.

[0099] The present invention also proposes an automobile, which includes a display screen structure. The specific structure of the display screen structure is as described in the above embodiments. Since the automobile adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought about by the technical solutions of the above embodiments, which will not be described in detail here.

[0100] The above description is merely a preferred embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings under the inventive concept of the present invention, or direct / indirect applications in other related technical fields, are included within the patent protection scope of the present invention.

Claims

1. A display screen structure, characterized in that, The display screen structure includes: The display screen has an adhesive coating area formed on its periphery and near the center. An adhesive layer comprising at least two adhesives, the adhesive layer being applied to the adhesive application area; and, A structural component, which is bonded to the display screen; The adhesive layer is selected using the same method as for display screen adhesive layers, including the following steps: Provides the display screen, structural components, and the first adhesive layer; The first adhesive layer is applied to the adhesive area, and the display screen and the structural component are bonded together by the first adhesive layer to form an assembly fixture; Heat the assembly fixture to a first preset temperature and observe the separation between the display screen and the structural component. If no separation occurs, the first adhesive layer is applied to the adhesive application area. If separation occurs, a second adhesive layer is provided and used to bond the debonded area; the assembly tool bonded by the second adhesive layer is then heated again to the first preset temperature, and the separation of the corresponding debonded area between the display screen and the structural component is observed to determine whether the second adhesive layer is suitable for application in the debonded area. Alternatively, the assembly fixture can be cooled to a second preset temperature, and the separation between the display screen and the structural component can be observed. If no separation occurs, the first adhesive layer is applied to the adhesive application area. If separation occurs, a third adhesive layer is provided and used to bond the debonded area; the assembly tool bonded by the third adhesive layer is then cooled again to the second preset temperature, and the separation of the corresponding debonded area between the display screen and the structural component is observed to determine whether the third adhesive layer is suitable for application in the debonded area.

2. The display screen structure as described in claim 1, characterized in that, After the steps of applying the first adhesive layer to the adhesive-coated area and bonding the display screen and the structural component together using the first adhesive layer to form an assembly fixture, the method further includes: Provide pull-out force testing equipment; The assembly tooling is subjected to a pull-out force test using the pull-out force testing device. The separation between the display screen and the structural component is observed to determine whether the first adhesive layer is suitable for application in the adhesive area.

3. The display screen structure as described in claim 1, characterized in that, After the steps of applying the first adhesive layer to the adhesive-coated area and bonding the display screen and the structural component together using the first adhesive layer to form an assembly fixture, the method further includes: Provide impact testing equipment; The assembly tooling is subjected to an impact test using the impact testing device, and the separation between the display screen and the structural component is observed to determine whether the first adhesive layer is suitable for application in the adhesive area.

4. The display screen structure as described in claim 1, characterized in that, The adhesive layer includes hot melt adhesive and double-sided adhesive.

5. A car, characterized in that, Includes the display screen structure as described in any one of claims 1-4.

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