Bending performance testing method of display assembly

Abstract

The invention provides a bending performance test method for a display assembly, and the method comprises the steps: providing a tool, and setting the initial state and bending range of the tool; the display assembly is arranged on the jig, and the display assembly is bent within the bending range based on the jig; collecting bounce data of the display assembly in the bending process; screening the bounce data based on the data screening standard, obtaining the maximum bounce data meeting the requirements of the data screening standard in the bounce data, and determining the bending performance of the display assembly based on the maximum bounce data. According to the testing method, the bending performance of the display assembly can be measured more accurately by directly testing the bending force change of the display assembly in the bending test.

Description

Technical Field

[0001] The present disclosure relates to the field of bending performance testing of display components, and in particular, to a bending performance testing method of a display component. Background Art

[0002] With the development of display technology, various new technologies are constantly emerging. Among them, with the development of flexible display technology, flexible screens have come into being. The advent of flexible screens meets people's new demands for display and has broad application prospects in wearable and portable electronic products.

[0003] In order to verify the bending reliability of flexible screens, each company needs to test the bending performance of flexible screens during the design and production process of flexible screens. However, due to the limitations of current testing methods, it is impossible to obtain more accurate test results for measuring the bending performance of flexible screens. Summary of the invention

[0004] A first aspect of the present disclosure provides a method for testing the bending performance of a display component, the method comprising: providing a jig, and setting an initial state and a bending range of the jig; placing the display component on the jig, and bending the display component within the bending range based on the jig; collecting rebound force data of the display component during the bending process; filtering the rebound force data based on a data filtering standard, and obtaining maximum rebound force data in the rebound force data that meets the requirements of the data filtering standard, and determining the bending performance of the display component based on the maximum rebound force data.

[0005] For a display component of a specific specification, the rebound force can directly reflect the difficulty of bending, thereby more accurately representing the bending performance of the display component. In the above scheme, by directly testing the change in the bending force of the display component in the bending test, the bending performance of the display component can be more accurately measured.

[0006] For example, multiple cycles of bending can be performed within the bending range to obtain multiple sets of data on the display component in a bent state, so as to facilitate the screening of better data or remove data with excessive deviations (caused by unstable bending state, factors of the fixture itself, etc.), thereby improving the accuracy of data obtained in the display component bending test.

[0007] In a specific embodiment of the first aspect of the present disclosure, the initial state is the state of the jig in a flat state, so that the starting position of the display component during the bending process is in a flat state, that is, the display component starts the bending test from a flat state.

[0008] In another specific embodiment of the first aspect of the present disclosure, the initial state is the state of the fixture at a preset bending angle, and the preset bending angle is the angle included in the bending range, that is, the display component starts the bending test from the bent state.

[0009] In a specific embodiment of the first aspect of the present disclosure, the bending range includes a bending angle ranging from 0 degrees to 180 degrees. When the bending angle corresponding to the jig is zero degrees, the jig and the display assembly are in a completely folded state. When the bending angle corresponding to the jig is 180 degrees, the jig and the display assembly are in a flattened state. In the initial state, the bending angle corresponding to the jig and the display assembly is greater than 0 degrees. In this way, the degree of bending that can be operated on the display assembly during actual application can be basically covered, so as to ensure the validity of the test results while ensuring the bending efficiency.

[0010] In a specific embodiment of the first aspect of the present disclosure, the step of filtering the rebound force data based on the data filtering criteria and obtaining the maximum rebound force data in the rebound force data that meets the requirements of the data filtering criteria may include: establishing a rebound force full-angle curve based on the rebound force and the bending angle, wherein the rebound force test data includes the rebound force and the bending angle; taking the rebound force full-angle curve with an acceptability greater than the acceptability threshold as an optional rebound force full-angle curve, and selecting the maximum rebound force data from the rebound force data corresponding to the optional rebound force full-angle curve.

[0011] In the above scheme, the full-angle rebound force curve represents the change in the rebound force of the display component during the entire bending test process, thereby also presenting the change in the bending performance of the display component. In this process, the uneven full-angle rebound force curve is removed to obtain the applicable range of the bending capacity (range of rebound force change) corresponding to the display component with stable bending performance, thereby facilitating customers to select display components that meet product requirements.

[0012] Optionally, the acceptability threshold is ±0.5 N*cm.

[0013] In a specific embodiment of the first aspect of the present disclosure, the maximum rebound force data includes at least one of a dynamic maximum rebound force and a static maximum rebound force, wherein the step of selecting the maximum rebound force data from the rebound force data corresponding to the optional rebound force full-angle curve may include: in the rebound force data corresponding to the optional rebound force full-angle curve, the maximum rebound force included in the rebound force data generated during the continuous bending process is the dynamic maximum rebound force, wherein the dynamic maximum rebound force characterizes the dynamic bending performance of the display component; bending the display component within the bending range based on the jig, comprising: when the jig and the display component are bent to the minimum bending angle in the bending range, statically maintaining a preset time period; wherein the maximum rebound force included in the rebound force data generated in the preset time period is the static maximum rebound force, and the static maximum rebound force characterizes the static bending performance of the display component.

[0014] In actual application scenarios, the display component will be in two states: in the process of bending (for example, when a user bends a mobile phone) and stable at a specific bending angle (for example, when a mobile phone is folded and ready for use). In these two different states, the display component will present different rebound forces due to factors such as different movement modes, and the requirements for external structures such as hinges are also different. In the above scheme, the maximum rebound force in the two states can be directly obtained to present the bending ability of the display component in the two states, so as to facilitate customers to select suitable display components.

[0015] Optionally, the preset time period is no longer than five minutes.

[0016] In a specific implementation of the first aspect of the present disclosure, the testing method may further include: testing the display assembly based on different bending speeds; establishing rebound force full-angle curves at different bending speeds. When there are at least two optional rebound force full-angle curves, selecting the maximum rebound force data from the rebound force data corresponding to the optional rebound force full-angle curve with the largest corresponding bending speed.

[0017] The rebound force presented by the display component at different bending speeds is different. In the above scheme, the rebound force change of the display component at different bending speeds can be presented to present the bending performance of the display component at different bending speeds, so as to facilitate customers to select display components corresponding to the bending speed requirements. For example, for small products such as mobile phones, the speed of being unfolded or bent during actual application will be relatively fast, while for larger display products such as bendable tablets, the speed of being unfolded or bent during actual application will be relatively slower.

[0018] Optionally, the bending speed is no greater than 18 degrees / second.

[0019] In a specific implementation of the first aspect of the present disclosure, the testing method may further include: after placing the display assembly on the jig, pre-bending the display assembly.

[0020] In the above solution, the bending performance of the display component is kept in a stable state by pre-bending, so that the rebound force data presented by the display component in the bending test is more accurate.

[0021] Optionally, the number of pre-bending is not less than 30 times.

[0022] In a specific embodiment of the first aspect of the present disclosure, the testing method may further include: before placing the display assembly on the jig, bending the jig and obtaining the jig rebound force data; after establishing a full-angle rebound force curve based on the rebound force and the bending angle, correcting the full-angle rebound force curve based on the jig rebound force data.

[0023] In the above scheme, the rebound force data generated by the fixture itself under no-load can be obtained, thereby eliminating the influence of the rebound force generated by the fixture itself on the test data, so that the test results of the bending performance of the display component are more accurate.

[0024] In a specific embodiment of the first aspect of the present disclosure, the step of correcting the full-angle rebound force curve based on the jig rebound force data may include: at each bending angle, subtracting the rebound force included in the jig rebound force data from the rebound force corresponding to the full-angle rebound force curve.

[0025] In a specific embodiment of the first aspect of the present disclosure, the testing method may further include: inspecting the display component after each bending test, and removing the rebound force data corresponding to the full-angle rebound force curve corresponding to when the display component has poor display. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 Shown is a flow chart of a bending performance testing method of a display component provided by an embodiment of the present disclosure.

[0027] Figure 2 Shown is a schematic diagram of the structure of the fixture in a bent state.

[0028] Figure 3 Shown is a flow chart of another bending performance testing method of a display component provided by an embodiment of the present disclosure.

[0029] Figure 4 Shown is a flow chart of another bending performance testing method of a display component provided by an embodiment of the present disclosure.

[0030] Figure 5 Shown is a flow chart of another bending performance testing method of a display component provided by an embodiment of the present disclosure.

[0031] Figure 6 Shown is a flow chart of another bending performance testing method of a display component provided by an embodiment of the present disclosure.

[0032] 7A to 7D A schematic diagram of a full-angle curve of the rebound force of a display component at different bending speeds provided by an embodiment of the present disclosure.

[0033] Figure 8 Shown is a flow chart of another bending performance testing method of a display component provided by an embodiment of the present disclosure.

[0034] Fig. 9 Shown is a flow chart of another bending performance testing method of a display component provided by an embodiment of the present disclosure. DETAILED DESCRIPTION

[0035] The following will be combined with the drawings in the embodiments of this specification to clearly and completely describe the technical solutions in the embodiments of this specification. Obviously, the described embodiments are only part of the embodiments of this specification, not all of the embodiments. Based on the embodiments in this specification, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of this specification.

[0036] With the gradual development of flexible display devices, test equipment for flexible display devices similar to flip books has gradually appeared in the market. The display component (which can be called a flexible screen) has a variety of different bending states during use, which are usually defined by the bending direction of the flexible screen (such as outward folding, inward folding, inner and outer folding) and parameters such as bending radius, bending center, and length of the bending portion. Therefore, in the process of testing the bending performance of the display component, parameters such as bending radius can be used as characteristics to characterize the bending performance of the display component.

[0037] When purchasing display components, customers will choose display components with bending performance that meet the requirements based on the structural requirements of the terminal products. Based on the needs of the terminal products, customers may need display components that are more compatible with their own products in terms of mechanical structure, and the above-mentioned test methods cannot provide corresponding data for selection. For example, taking foldable screen mobile phones as an example, the mobile phone terminal products designed by mobile phone manufacturers have hinges that drive the display components to bend, and different models of display components generate different stresses when bent, and this stress will be directly fed back to the hinge. Therefore, when customers choose display components, they also need to consider the mechanical impact of the display components on the mechanical structure of the hinge.

[0038] At least one embodiment of the present disclosure provides a method for testing the bending performance of a display component to at least solve the above technical problems. Figure 1 As shown, the testing method may include the following steps S100 to S400.

[0039] S100, providing a jig, and setting an initial state and a bending range of the jig.

[0040] like Figure 2As shown, the jig 100 includes at least two structural members, and the structural members can be folded against each other. The folding angle between the structural members is the bending angle A of the jig 100, and the variation range of the bending angle A is the bending range of the jig. The initial state of the jig 100 is the initial numerical state of the bending angle A corresponding to the start of the bending test, and the initial state determines the rebound force exhibited by the following display component at the initial moment of the test. For example, when A is 180 degrees, the jig 100 is flattened, and the rebound force exhibited by the display component at this moment is theoretically zero. Correspondingly, if A is 90 degrees, the jig 100 is bent, and the display component will exhibit a certain rebound force. If the initial state is maintained for a period of time, the static rebound force of the display component during this period of time can be directly detected, and this corresponds to a specific bending state of the display component. For example, if the display component will maintain a specific bending angle during actual application, the bending angle corresponding to the initial state can be directly set to the specific bending angle, so that the static rebound force of the display component at the specific angle can be directly tested during the test process, so that the customer can directly choose whether the display component meets the stress requirements of the corresponding external mechanical structure such as the hinge.

[0041] S200 , placing the display component on a jig, and bending the display component within a bending range based on the jig.

[0042] For example, multiple cycles of bending can be performed within the bending range to obtain multiple sets of data of the display component in a bent state, so as to screen better data or remove data with excessive deviation (caused by unstable bending state, factors of the fixture itself, etc.), thereby improving the accuracy of data obtained in the display component bending test. Specifically, taking the bending angle A corresponding to the initial state of the display component as 180 degrees as an example, the display component can be bent clockwise based on the fixture 100 until the bending angle A is 0 degrees or close to 0 degrees, and then the display component can be bent counterclockwise based on the fixture 100 until the bending angle A returns to 180 degrees, which is one cycle. In this way, multiple cycles of bending operations can be performed over and over again.

[0043] In some embodiments of the present disclosure, the initial state may be a state in which the jig 100 is in a flat state, so that the starting position of the display component during the bending process is in a flat state, that is, the display component starts the bending test from a flat state.

[0044] In other embodiments of the present disclosure, the initial state is the state of the jig 100 at a preset bending angle, and the preset bending angle is the angle included in the bending range, that is, the display component starts the bending test from the bent state.

[0045] In at least one embodiment of the present disclosure, Figure 2As shown, the bending range includes a bending angle ranging from 0 to 180 degrees. When the bending angle corresponding to the jig is zero, the jig and the display assembly are completely folded, and when the bending angle corresponding to the jig is 180 degrees, the jig and the display assembly are flattened. In the initial state, the bending angle corresponding to the jig and the display assembly is greater than 0 degrees. In this way, it can basically cover the degree of bending that can be operated in the actual application process of the display assembly, so as to ensure the validity of the test results while ensuring the bending efficiency.

[0046] S300, collecting rebound force data of the display component during the bending process.

[0047] S400, filtering the rebound force data based on the data filtering standard, obtaining the maximum rebound force data in the rebound force data that meets the requirements of the data filtering standard, and determining the bending performance of the display component based on the maximum rebound force data.

[0048] In the test methods S100 to S400, by directly testing the change in the bending force of the display component in the bending test, the bending performance of the display component can be measured more accurately, so that customers can choose a matching display component according to the mechanical structure (such as a hinge) of their own products. For example, the display component includes multiple film layers. During the bending process, the display component will creep and have rebound properties. For a display component of a specific specification, the magnitude of the rebound force directly reflects the difficulty of bending the display component. Accordingly, according to the hinge of a specific mechanical structure, the rebound force can be directly used to compare the pressure-bearing capacity of the mechanical structure, thereby directly showing whether the display component matches the hinge, so that customers can choose a display component of the corresponding specification, that is, greatly increasing the efficiency of promoting products to customers.

[0049] In at least one embodiment of the present disclosure, Figure 3 As shown, regarding the steps of filtering the rebound force data based on the data filtering criteria and obtaining the maximum rebound force data in the rebound force data that meets the requirements of the data filtering criteria, that is, S400 may include the following steps S410 and S420.

[0050] S410, establishing a full-angle rebound force curve based on the rebound force and the bending angle, wherein the rebound force test data includes the rebound force and the bending angle. For example, a coordinate system can be established with the bending angle as the horizontal coordinate and the rebound force as the vertical coordinate to generate a full-angle rebound force curve.

[0051] S420, taking the rebound force full-angle curve whose acceptability is greater than the acceptability threshold as the optional rebound force full-angle curve, and selecting the maximum rebound force data from the rebound force data corresponding to the optional rebound force full-angle curve.

[0052] In the above steps S410 and S420, the full-angle rebound force curve represents the rebound force change of the display component during the entire bending test process, thereby also presenting the change in the bending performance of the display component. In this process, the uneven full-angle rebound force curve is removed to obtain the applicable range of the bending capacity (the range of rebound force change) corresponding to the display component with stable bending performance, thereby facilitating customers to select display components that meet product requirements.

[0053] The acceptability represents the smoothness of the full-angle curve of the rebound force, and accordingly, also represents the degree of oscillation of the rebound force change of the display component during the test. The smaller the acceptability, the relatively gentle change of the rebound force of the display component, and the stress mutation is not likely to occur in the display component, and the stress change presented to the outside will also be relatively stable. It should be noted that the acceptability threshold can be set according to the actual process requirements, and the embodiments of the present disclosure are not limited to this. For example, the acceptability threshold can be ±0.5N*cm.

[0054] In at least one embodiment of the present disclosure, Figure 4 As shown, the maximum rebound force data includes at least one of a dynamic maximum rebound force and a static maximum rebound force, wherein, regarding the step of selecting the maximum rebound force data from the rebound force data corresponding to the optional rebound force full-angle curve, that is, the above-mentioned step S420 may include: in the rebound force data corresponding to the optional rebound force full-angle curve, the maximum rebound force included in the rebound force data generated during the continuous bending process is the dynamic maximum rebound force, wherein the dynamic maximum rebound force characterizes the dynamic bending performance of the display component; based on the jig, the display component is bent within the bending range, that is, the above-mentioned step S200 includes: when the jig and the display component are bent to the minimum bending angle in the bending range, statically maintaining a preset time period; wherein the maximum rebound force included in the rebound force data generated in the preset time period is the static maximum rebound force, and the static maximum rebound force characterizes the static bending performance of the display component.

[0055] In actual application scenarios, the display component will be in two states: in the process of bending (for example, when a user bends a mobile phone) and stable at a specific bending angle (for example, when a mobile phone is folded and ready for use). In these two different states, the display component will present different rebound forces due to factors such as different movement modes, and the requirements for external structures such as hinges are also different. In the above scheme, the maximum rebound force in the two states can be directly obtained to present the bending ability of the display component in the two states, so as to facilitate customers to select suitable display components.

[0056] It should be noted that when the display component is in a static state (stable at a specific bending angle) and bent, the rebound force of the display component will gradually and steadily change to a stable state. Therefore, it is necessary to set the above-mentioned preset time period so that the rebound force of the display component is stable. The preset time period can be set according to the actual process requirements, and the embodiments of the present disclosure are not limited to this. For example, referring to Table 1 below, the display component sample is tested for a duration of 0 seconds to 12 hours, and the elastic force (unit N*cm) of each time node (for example, 30 seconds, 5 minutes, etc.) is tested. It can be seen from the data in Table 1 that before 1 minute of static state, there is a large deviation in the rebound force data. Between 1-5 minutes of static state, the rebound force data tends to be stable. After a long static state, such as 30 minutes, the data changes, which is mainly due to the influence of the test equipment. Based on this, the stabilization time is recommended to be about 5 minutes. Therefore, in at least one embodiment of the present disclosure, the preset time period may be no more than five minutes. For example, further, considering that most current display component products can be in a stable state within 30 seconds or even more than ten seconds when folded, therefore, at least from the perspective of taking into account the detection effect, the preset time period corresponding to some specifications of display components can be set to no more than 30 seconds according to product specifications.

[0057]

[0058] In at least one embodiment of the present disclosure, Figure 5 As shown, the test method may further include: in step S200, testing the display assembly based on different bending speeds; in steps S410 and S420, establishing rebound force full-angle curves at different bending speeds. When there are at least two optional rebound force full-angle curves, select the maximum rebound force data from the rebound force data corresponding to the optional rebound force full-angle curve with the largest corresponding bending speed.

[0059] The rebound force presented by the display component at different bending speeds is different. In the above scheme, the rebound force change of the display component at different bending speeds can be presented to present the bending performance of the display component at different bending speeds, so as to facilitate customers to select display components corresponding to the bending speed requirements. For example, for small products such as mobile phones, the speed of being unfolded or bent during actual application will be relatively fast, while for larger display products such as bendable tablets, the speed of being unfolded or bent during actual application will be relatively slower.

[0060] In at least one embodiment of the present disclosure, Figure 5As shown, the test method may also include: in step S200, after placing the display component on the jig, pre-bending the display component. As mentioned above, when the display module is bent, the film layer inside it will creep. As the number of bends increases, the creep between the film layers will tend to be stable, so that the bending performance of the display component will also tend to be stable. In this solution, the bending performance of the display component is stabilized by pre-bending, so that the rebound force data presented by the display component in the bending test is more accurate.

[0061] In the embodiments of the present disclosure, the number of pre-bending can be set according to the actual process requirements and is not limited here. Referring to samples 1-3 in Tables 2 to 4 below, the display components of samples 1-3 may have the same specifications, but there are still certain differences in the rebound performance of the three. In this way, the rebound force of multiple display components can be tested to determine the number of bending times required for their bending performance to reach a relatively stable state.

[0062] In samples 1-3 in the table below, the display components were bent 100 times, and each time the display components were folded in half (i.e., the bending angle was 0 degrees). It can be seen that for sample 1, the maximum rebound force range was less than 0.07N*cm in the 51-60th stage of folding cycles and the subsequent 61-70th, 71-80th, etc. stages, meeting the stability requirement of the rebound force of <0.1N*cm (the bending performance is relatively stable); for sample 2, the maximum rebound force range was <0.07N*cm in the 51-60th stage of folding cycles and the subsequent folding stages, thus meeting the set requirements (the bending performance is relatively stable); for sample 3, the maximum rebound force range was <0.08N*cm in the 41-50th stage of folding cycles and the subsequent folding stages, thus meeting the set requirements (the bending performance is relatively stable).

[0063]

[0064]

[0065]

[0066] According to the data in the above table, for the above-mentioned samples 1-3, when the number of pre-bending is more than 50 times, the integrity and performance of the display component are stable. Considering that display components of different specifications need to be subjected to bending tests in actual operation, in at least one embodiment of the present disclosure, the number of pre-bending can be no less than 30 times, so as to ensure the efficiency of the bending test while making the bending performance of the display component relatively stable. Furthermore, the number of pre-bending can be set to be no less than 50 times.

[0067] In at least one embodiment of the present disclosure, Figure 6As shown, the testing method may further include the following steps S510 and S520.

[0068] S510, before placing the display assembly on the jig, bend the jig and obtain jig rebound force data.

[0069] S520, after establishing a full-angle rebound force curve based on the rebound force and the bending angle, correct the full-angle rebound force curve based on the fixture rebound force data.

[0070] In steps S510 and S520, the rebound force data generated by the fixture itself under no-load can be obtained, thereby eliminating the influence of the rebound force generated by the fixture itself on the test data, so that the test results of the bending performance of the display component are more accurate.

[0071] It should be noted that in the embodiments of the present disclosure, the bending speed can be set according to the actual process requirements and is not limited here. For example, the jig itself will vibrate when bending, and as the bending speed increases, the vibration of the jig itself will also increase, that is, the error range of the rebound force generated by itself increases, thereby affecting the accuracy of the rebound force data of the display component.

[0072] In at least one embodiment of the present disclosure, the bending speed can be set to no more than 18 degrees / second, so that the change in the rebound force data generated by the fixture itself is relatively stable, thereby reducing the impact on the rebound force data of the display component.

[0073] For example, see 7A to 7D , 7A to 7D The corresponding rebound force test is carried out at bending speeds of 6 degrees / second, 12 degrees / second, 18 degrees / second, and 30 degrees / second, respectively, with the acceptability threshold (oscillation degree of rebound force change) of ±0.5N*cm as the standard. When the bending speed is 6 degrees / second and 12 degrees / second, the acceptability of the curve (rebound force volatility, equal to the oscillation degree of the curve) is <0.3N*cm, thus meeting the requirements; when the bending speed is 18 degrees / second, the acceptability of the curve (rebound force volatility, equal to the oscillation degree of the curve) basically meets ±0.5N*cm; when the bending speed is 30 degrees / second, the acceptability of the curve (rebound force volatility, equal to the oscillation degree of the curve) is >±0.5N*cm. Therefore, when testing the rebound force, the test equipment needs to be run at no load to determine the folding speed at which the equipment sensor collects stable data. In this test, the folding torque equipment has a stable bending speed of <18 degrees / second.

[0074] In at least one embodiment of the present disclosure, Figure 8As shown, regarding the step of correcting the rebound force full-angle curve based on the jig rebound force data, that is, step S520 may include: at each bending angle, subtracting the rebound force included in the jig rebound force data from the rebound force corresponding to the full-angle curve of the rebound force.

[0075] In at least one embodiment of the present disclosure, Fig. 9 As shown, the testing method may further include step S600: testing the display component after each bending test, and removing the rebound force data corresponding to the rebound force full-angle curve corresponding to when the display component has poor display.

[0076] It should be noted that in the embodiments of the present disclosure, other parameters such as the bending radius of the display component can still be tested synchronously during the testing process to measure the bending performance of the display component.

[0077] It should be noted that the display component in the embodiment of the present disclosure can be called a flexible display screen, which can be any product or component with a display function, such as a television, a digital camera, a mobile phone, a watch, a tablet computer, a laptop computer, a navigator, etc. For example, the display module can be used in folding mobile phones, tablets and other products.

[0078] It should be understood that the various forms of processes shown above can be used to reorder, add or delete steps. For example, the steps described in the present invention can be executed in parallel, sequentially or in different orders, as long as the desired results of the technical solution of the present invention can be achieved, and this document does not limit this.

[0079] The above specific implementations do not constitute a limitation on the protection scope of the present invention. It should be understood by those skilled in the art that various modifications, combinations, sub-combinations and substitutions can be made according to design requirements and other factors. Any modification, equivalent substitution and improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.

[0080] The above description is only a preferred embodiment of this specification and is not intended to limit this specification. Any modifications, equivalent substitutions, etc. made within the spirit and principles of this specification should be included in the protection scope of this specification.

Claims

1. A method for testing the bending performance of a display component, characterized in that: include: Provide a jig and set its initial state and bending range; Placing the display component on the jig, and bending the display component within the bending range based on the jig; Collecting rebound force data of the display assembly during the bending process; The rebound force data are screened based on a data screening standard, and maximum rebound force data in the rebound force data that meets the requirements of the data screening standard is obtained, and the bending performance of the display component is determined based on the maximum rebound force data.

2. The method for testing the bending performance of a display assembly according to claim 1, characterized in that: The initial state is the state of the jig in a flattened state, so that the starting position of the display assembly during the bending process is in a flattened state; or The initial state is the state of the fixture at a preset bending angle, and the preset bending angle is an angle included in the bending range.

3. The method for testing the bending performance of a display assembly according to claim 2, characterized in that: The bending range includes a bending angle ranging from 0 degrees to 180 degrees. When the bending angle corresponding to the jig is 0 degrees, the jig and the display component are in a completely folded state. When the bending angle corresponding to the jig is 180 degrees, the jig and the display component are in a flattened state. In the initial state, the bending angles corresponding to the fixture and the display assembly are greater than 0 degrees.

4. The method for testing the bending performance of a display assembly according to any one of claims 1 to 3, characterized in that: The step of screening the rebound force data based on the data screening criteria and obtaining the maximum rebound force data in the rebound force data that meets the requirements of the data screening criteria includes: Establishing a full-angle rebound force curve based on the rebound force and the bending angle, wherein the rebound force test data includes the rebound force and the bending angle; Taking the rebound force full-angle curve whose acceptability is greater than the acceptability threshold as an optional rebound force full-angle curve, and selecting the maximum rebound force data from the rebound force data corresponding to the optional rebound force full-angle curve; Preferably, the acceptability threshold is ±0.5N*cm.

5. The method for testing the bending performance of a display assembly according to claim 4, characterized in that: The maximum rebound force data includes at least one of a dynamic maximum rebound force and a static maximum rebound force, wherein the selecting the maximum rebound force data from the rebound force data corresponding to the optional rebound force full-angle curve includes: In the rebound force data corresponding to the optional rebound force full-angle curve, the maximum rebound force included in the rebound force data generated during the continuous bending process is the dynamic maximum rebound force, wherein the dynamic maximum rebound force represents the dynamic bending performance of the display assembly; The method of bending the display component within the bending range based on the fixture includes: when the fixture and the display component are bent to the minimum bending angle in the bending range, they are kept static for a preset time period; wherein the maximum rebound force included in the rebound force data generated in the preset time period is the static maximum rebound force, and the static maximum rebound force represents the static bending performance of the display component; Preferably, the preset time period is no longer than five minutes.

6. The method for testing the bending performance of a display assembly according to claim 4, characterized in that: Also includes: Testing the display assembly based on different bending speeds respectively; Establishing the full-angle curve of the rebound force at different bending speeds; Wherein, when there are at least two optional full-angle rebound force curves, the maximum rebound force data is selected from the rebound force data corresponding to the optional full-angle rebound force curve having the largest bending speed; Optionally, the bending speed is no greater than 18 degrees / second.

7. The method for testing the bending performance of a display assembly according to claim 4, characterized in that: Also includes: After placing the display assembly on the jig, pre-bending the display assembly; Preferably, the number of pre-bending is not less than 30 times.

8. The method for testing the bending performance of a display assembly according to claim 4, characterized in that: Also includes: Before placing the display assembly on the jig, bending the jig and obtaining jig rebound force data; After the rebound force full-angle curve is established based on the rebound force and the bending angle, the rebound force full-angle curve is corrected based on the jig rebound force data.

9. The method for testing the bending performance of a display assembly according to claim 8, characterized in that: The correcting the full-angle curve of the rebound force based on the jig rebound force data includes: At each bending angle, the rebound force included in the jig rebound force data is subtracted from the rebound force corresponding to the full-angle rebound force curve.

10. The method for testing the bending performance of a display assembly according to claim 4, characterized in that: Also includes: The display component is inspected after each bending test, and the rebound force data corresponding to the rebound force full-angle curve corresponding to when the display component has poor display is removed.

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