Test device and test method

Abstract

The embodiment of the invention provides a testing device and a testing method, and aims to accurately test the bending resistance of a screen body. The testing device is used for testing the bending resistance of a screen body and comprises a bearing base which comprises two supporting parts oppositely arranged in the first direction, and the distance between the two supporting parts in the first direction is adjustable; the pressing rod component is arranged on one side, in the second direction, of the bearing base, the pressing rod component is correspondingly located between the two adjacent supporting parts, and the pressing rod component is movably arranged in the second direction relative to the bearing base.

Description

Technical Field

[0001] The present application relates to the technical field of testing equipment, and in particular to a testing device and a testing method. Background Art

[0002] Organic Light Emitting Diode (OLED) and flat panel display devices based on technologies such as Light Emitting Diode (LED) have been widely used in various consumer electronic products such as mobile phones, televisions, laptops, desktop computers, etc. due to their advantages such as high image quality, power saving, thin body and wide application range, becoming the mainstream in display devices.

[0003] OLED rigid displays are widely used in the wearable field. Their application scenarios include loads such as extrusion, bending, and falling. The OLED screen must have a certain bending strength. It is necessary to study the mechanical analytical expression, test methods and equipment for the bending strength of the OLED screen. Summary of the invention

[0004] The embodiments of the present application provide a testing device and a testing method, which are intended to accurately test the bending resistance of a screen.

[0005] An embodiment of the first aspect of the present application provides a testing device for testing the bending resistance of a screen body, the testing device comprising: a supporting base, comprising two supporting parts arranged relatively to each other along a first direction, and the spacing between the two supporting parts in the first direction is adjustable; a pressure rod component, arranged on one side of the supporting base in the second direction, the pressure rod component is correspondingly located between two adjacent supporting parts, and the pressure rod component is movably arranged relative to the supporting base along the second direction.

[0006] According to an implementation of the first aspect of the present application, the supporting base further includes a first guide portion extending along a first direction, the two support portions are both arranged on the first guide portion, and at least one support portion is movably arranged along the first guide portion in the first direction.

[0007] According to any of the aforementioned embodiments of the first aspect of the present application, scale marks are provided on the first guide portion.

[0008] According to any of the aforementioned embodiments of the first aspect of the present application, the support portion includes a first connecting hole that is arranged through, and the support portion is sleeved on the first guide portion through the first connecting hole.

[0009] According to any of the aforementioned embodiments of the first aspect of the present application, the supporting base also includes: an adjustment rod, wherein an adjustment hole is penetrated through one of the support parts, the adjustment rod is sleeved in the adjustment hole and abuts against the other support part, so that the distance between the two support parts can be adjusted by the adjustment rod.

[0010] According to any of the aforementioned embodiments of the first aspect of the present application, the adjusting rod has an external thread, and the adjusting hole has an internal thread.

[0011] According to any of the aforementioned embodiments of the first aspect of the present application, it also includes a first support frame, and the first guide portion is connected to the first support frame at both ends of the first direction.

[0012] According to any of the aforementioned embodiments of the first aspect of the present application, the first support frame has a first bottom arm and first side arms connected to both sides of the first bottom arm, and the ends of the first side arm and the first guide portion are connected to each other.

[0013] According to any of the aforementioned embodiments of the first aspect of the present application, it also includes a second guide portion extending along the first direction, and the pressure rod component is connected to the second guide portion.

[0014] According to any of the aforementioned embodiments of the first aspect of the present application, the pressure rod component includes a second connecting hole that is arranged through it, and the pressure rod component is sleeved on the second guide portion through the second connecting hole.

[0015] According to any of the aforementioned embodiments of the first aspect of the present application, it also includes a second support frame, and the second guide portion is connected to the second support frame at both ends of the first direction.

[0016] According to any of the aforementioned embodiments of the first aspect of the present application, the second support frame has a second bottom arm and second side arms connected to both sides of the second bottom arm, and the ends of the second side arm and the second guide portion are connected to each other.

[0017] The embodiment of the second aspect of the present application further provides a screen bending resistance testing method, comprising:

[0018] The screen body is arranged on one side of the two supporting parts, and the pressure rod component applies a bending force toward the screen body from the side of the screen body away from the two supporting parts;

[0019] Obtain the bending moment M on the screen;

[0020] Obtain the bending section coefficient W of the screen body;

[0021] The bending strength of the screen body is determined according to the ratio of the bending moment M and the bending section coefficient W.

[0022] According to an implementation of the second aspect of the present application, the step of obtaining the bending moment M exerted on the screen body includes:

[0023] Obtain the bending force F;

[0024] Obtain the moment L of the bending force F;

[0025] The bending moment M is determined by the product of the bending force F and the moment L.

[0026] According to any of the aforementioned embodiments of the second aspect of the present application, one quarter of the distance between the two support parts is determined as the moment L.

[0027] According to any of the aforementioned implementations of the second aspect of the present application, it is determined that the force acting on the screen body at the moment of destruction is the bending force F.

[0028] According to any of the aforementioned implementations of the second aspect of the present application, the step of obtaining the bending section coefficient W of the screen body includes:

[0029] Obtain the moment of inertia Iz of the neutral axis of the screen cross section;

[0030] Get the thickness h of the screen;

[0031] The section modulus W is determined by the ratio of the moment of inertia Iz to half the thickness h.

[0032] According to any of the aforementioned embodiments of the second aspect of the present application, the screen body includes a substrate, a light-emitting functional layer, a packaging frame surrounding the light-emitting functional layer, and a cover plate, the cover plate, the packaging frame, and the substrate are interconnected and enclosed to form a cavity for accommodating the light-emitting functional layer, and the light-emitting functional layer includes a driving array layer and a light-emitting device layer;

[0033] The steps of obtaining the moment of inertia Iz of the neutral axis of the screen cross section include:

[0034] Get the width b and thickness h of the screen;

[0035] Obtaining a width b1 of the light-emitting functional layer and a thickness h1 of the light-emitting functional layer;

[0036] Determine the moment of inertia Iz = bh 3 / 12-b1h1 3 / 12.

[0037] According to any of the aforementioned embodiments of the second aspect of the present application, when b1h1 3 / h is less than or equal to 10 -4 When the moment of inertia is determined, Iz = bh 3 / 12-b1h1 3 / 12 step: determine Iz = bh 3 / 12.

[0038] In the test device provided in the embodiment of the present application, the test device is used to test the bending resistance of the screen body, and the test device includes a bearing base and a pressure rod component. The bearing base is used to bear the screen body. The bearing base includes two support parts arranged opposite to each other along a first direction, and the screen body can be stably supported by the two support parts. The spacing between the two support parts in the first direction is adjustable, so that the two support parts can be used to support screen bodies of different sizes, and the two support parts can also be used to support different positions of the screen body. The pressure rod component is arranged on one side of the bearing base in the second direction, and the pressure rod component is used to move along the second direction to apply a bending force to the screen body on the support part. The test device provided in the embodiment of the present application is capable of testing the bending resistance of the screen body. BRIEF DESCRIPTION OF THE DRAWINGS

[0039] Other features, objects and advantages of the present application will become more apparent by reading the following detailed description of non-limiting embodiments with reference to the accompanying drawings, in which the same or similar reference numerals represent the same or similar features.

[0040] Figure 1 is a structural schematic diagram of a testing device provided in an embodiment of the present application;

[0041] Figure 2 It is a flow chart of a screen bending resistance testing method provided in an embodiment of the present application;

[0042] Figure 3 It is a flowchart of a step in a screen bending resistance testing method provided in an embodiment of the present application;

[0043] Figure 4 It is a flow chart of another step in a screen bending resistance testing method provided in an embodiment of the present application;

[0044] Figure 5 It is a simplified structural diagram of a screen body;

[0045] Figure 6 It is a flow chart of another step in a screen bending resistance testing method provided in an embodiment of the present application.

[0046] Description of reference numerals:

[0047] 10. Testing device; 20. Screen body; 21. Substrate; 22. Packaging frame; 23. Cover plate; 24. Light-emitting functional layer;

[0048] 100, bearing base; 110, supporting part; 111, first connecting hole; 112, adjusting hole; 120, first guiding part; 130, adjusting rod; 140, first supporting frame; 141, first bottom arm; 142, first side arm;

[0049] 200, a pressure rod component; 210, a second connecting hole;

[0050] 300, second guide portion;

[0051] 400, second support frame; 410, second bottom arm; 420, second side arm. DETAILED DESCRIPTION

[0052] The features and exemplary embodiments of various aspects of the present application will be described in detail below. In the detailed description below, many specific details are proposed to provide a comprehensive understanding of the present application. However, it is obvious to those skilled in the art that the present application can be implemented without the need for some of these specific details. The following description of the embodiments is only to provide a better understanding of the present application by illustrating examples of the present application. In the accompanying drawings and the following description, at least some of the known structures and technologies are not shown to avoid unnecessary ambiguity in the present application; and, for clarity, the size of some structures may be exaggerated. In addition, the features, structures or characteristics described below may be combined in one or more embodiments in any suitable manner.

[0053] In the description of the present application, it should be noted that, unless otherwise specified, "multiple" means more than two; the terms "upper", "lower", "left", "right", "inner", "outer", etc., indicating directions or positional relationships, are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0054] The directional words appearing in the following description are all directions shown in the figures, and do not limit the specific structure of the embodiments of the present application. In the description of the present application, it should also be noted that, unless otherwise clearly specified and limited, the terms "installation" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be directly connected or indirectly connected. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to the specific circumstances.

[0055] In order to better understand this application, Figures 1 to 6 The testing device and testing method of the embodiments of the present application are described in detail.

[0056] like Figure 1As shown, an embodiment of the first aspect of the present application provides a testing device 10 for testing the bending resistance of a screen body 20, wherein the testing device 10 comprises: a supporting base 100, comprising two supporting portions 110 arranged opposite to each other along a first direction, and the spacing between the two supporting portions 110 in the first direction is adjustable; a pressure rod component 200, arranged on one side of the supporting base 100 in the second direction, the pressure rod component 200 is correspondingly located between two adjacent supporting portions 110, and the pressure rod component 200 is movably arranged relative to the supporting base 100 along the second direction.

[0057] In the test device 10 provided in the embodiment of the present application, the test device 10 is used to test the bending resistance of the screen body 20, and the test device 10 includes a bearing base 100 and a pressure rod component 200. The bearing base 100 is used to bear the screen body 20. The bearing base 100 includes two supporting parts 110 arranged opposite to each other along a first direction, and the screen body 20 can be stably supported by the two supporting parts 110. The spacing between the two supporting parts 110 in the first direction is adjustable, so that the two supporting parts 110 can be used to support screen bodies 20 of different sizes, and the two supporting parts 110 can also be used to support different positions of the screen body 20. The pressure rod component 200 is arranged on one side of the bearing base 100 in the second direction, and the pressure rod component 200 is used to move along the second direction to apply a bending force to the screen body 20 on the supporting part 110. The test device 10 provided in the embodiment of the present application can test the bending resistance of the screen body 20.

[0058] Optionally, the support portion 110 has an extension width in the third direction, and the extension width can be compatible with the width of the screen body 20 in the third direction, or the extension width is greater than or equal to the width of the screen body 20 in the third direction, so that the support portion 110 can provide better support to the screen body 20.

[0059] Optionally, the support portion 110 has a support surface for supporting the screen body 20, and optionally, the support surface may be an arc surface to improve the damage of the support surface to the screen body 20. Optionally, the support surface may be an arc surface, and the cross section of the support surface on the reference surface is arc-shaped, and the reference surface is parallel to the first direction and the second direction.

[0060] Optionally, the materials of the two support parts 110 are both materials with relatively high structural strength and structural rigidity, such as steel, so as to improve the problem that the support parts 110 are easily deformed during the test and affect the test accuracy.

[0061] Optionally, the support portion 110 is substantially plate-shaped, and a large surface of the support portion 110 is parallel to the second direction and the third direction.

[0062] In some optional embodiments, the supporting base 100 further includes a first guide portion 120 extending along the first direction, the two support portions 110 are both disposed on the first guide portion 120 , and at least one support portion 110 is movably disposed along the first guide portion 120 in the first direction.

[0063] In these optional embodiments, the supporting base 100 also includes a first guide portion 120, and the two supporting portions 110 are both arranged on the first guide portion 120. Through the guiding effect of the first guide portion 120, the two supporting portions 110 can move relative to each other in the first direction, thereby improving the problem of easy displacement of the supporting portions 110 during movement.

[0064] Optionally, a scale mark is provided on the first guide portion 120. The scale mark can be used to accurately determine the spacing between the two support portions 110, thereby improving the test efficiency.

[0065] Optionally, the support portion 110 includes a first connecting hole 111 extending therethrough, and the support portion 110 is sleeved on the first guide portion 120 through the first connecting hole 111. In these optional embodiments, the support portion 110 is sleeved on the first guide portion 120 through the first connecting hole 111, which can improve the stability of the relative position of the support portion 110 and the first guide portion 120.

[0066] Optionally, the size of the first connection hole 111 is slightly larger than the cross-sectional size of the first guide portion 120 , so that the support portion 110 can slide along the first guide portion 120 through the first connection hole 111 .

[0067] In some optional embodiments, the supporting base 100 also includes an adjustment rod 130, wherein an adjustment hole 112 is penetrated through one of the support parts 110, and the adjustment rod 130 is sleeved in the adjustment hole 112 and abuts against the other support part 110, so that the distance between the two support parts 110 can be adjusted by the adjustment rod 130.

[0068] In these optional embodiments, an adjustment hole 112 is provided on one of the two support parts 110, and the adjustment rod 130 passes through the adjustment hole 112 and abuts against the other support part 110. By adjusting the relative position of the adjustment rod 130 and the support part 110, the distance between the two support parts 110 can be adjusted. The structure is simple and the implementation is convenient.

[0069] Optionally, the adjusting rod 130 has an external thread, and the adjusting hole 112 has an internal thread. The spacing between the two supporting parts 110 can be adjusted by screwing the adjusting rod 130, and the adjusting rod 130 cooperates with the supporting part 110 through the external thread, the internal thread, and the mutual stability of the relative position of the adjusting rod 130 and the supporting part 110 can be ensured.

[0070] Optionally, the adjusting rod 130 is located on a side of the first guide portion 120 away from the pressing rod component 200. In other embodiments, the adjusting rod 130 may also be located on a side of the first guide portion 120 facing the pressing rod component 200.

[0071] In some optional embodiments, the testing device 10 further includes a first support frame 140 , and the first guide portion 120 is connected to the first support frame 140 at both ends in the first direction, and the first support frame 140 provides stable support to the first guide portion 120 .

[0072] Optionally, the first support frame 140 has a first bottom arm 141 and first side arms 142 connected to both sides of the first bottom arm 141 , and the first side arms 142 and ends of the first guide portion 120 are connected to each other.

[0073] Optionally, the first bottom arm 141 and the two first side arms 142 enclose a first accommodation space, and the adjustment rod 130 may be located in the first accommodation space to reduce the space occupied by the entire testing device 10 .

[0074] Optionally, a first connection portion is provided on a side of the first bottom arm 141 away from the first side arm 142, and the supporting base 100 can be fixed at a preset position through the first connection portion. Optionally, the first connection portion can be columnar and have a through hole extending therethrough.

[0075] In some optional embodiments, the testing device 10 further includes a second guide portion 300 extending along the first direction, and the pressure rod component 200 is connected to the second guide portion 300 .

[0076] In these optional embodiments, the pressure rod component 200 is arranged on the second guide portion 300, and the pressure rod component 200 can move in the first direction relative to the second guide portion 300 to adjust the relative position relationship between the pressure rod component 200 and the support portion 110 so that the pressure rod component 200 is aligned with the bending area of ​​the screen body 20.

[0077] Optionally, the pressure rod component 200 includes a second connecting hole 210 that is arranged through the pressure rod component 200, and the pressure rod component 200 is sleeved on the second guide portion 300 through the second connecting hole 210 to improve the stability of the relative position between the pressure rod component 200 and the second guide portion 300.

[0078] In some optional embodiments, the testing device 10 further includes a second support frame 400 , and the second guide portion 300 is connected to the second support frame 400 at both ends in the first direction, and the second support frame 400 can provide stable support to the second guide portion 300 .

[0079] Optionally, the second support frame 400 has a second bottom arm 410 and second side arms 420 connected to both sides of the second bottom arm 410 , and the second side arms 420 and ends of the second guide portion 300 are connected to each other.

[0080] Optionally, a second connecting portion is provided on a side of the second bottom arm 410 away from the second side wall, and the second connecting portion can be used to fix the second support frame 400 at a preset position. Optionally, the second connecting portion can be columnar and have a through hole provided therethrough.

[0081] Optionally, a pressure sensor may be provided on the pressing component to obtain the force applied by the pressing component to the screen body 20. Alternatively, the testing device 10 further includes a controller to control the force applied by the pressing component to the screen body 20.

[0082] When the screen body 20 is subjected to a bending test, the screen body 20 can be placed on two supporting parts 110, and the position of the pressure rod component 200 can be adjusted so that the pressure rod component 200 corresponds to the top of the screen body 20. By adjusting the position of the pressure rod component 200, the pressure rod component 200 can bend the screen body 20 between the two supporting parts 110. By obtaining the force applied by the pressure rod component 200 to the screen body 20 at the moment when the screen body 20 is damaged, the maximum bending force of the screen body 20 can be determined.

[0083] The second aspect of the present application also provides a method for testing the bending resistance of the screen body 20, which can be tested using the testing device 10 of any of the first aspect embodiments described above. Figure 1 and Figure 2 As shown, bending test methods may include:

[0084] Step S01 : the screen body 20 is disposed on one side of the two supporting parts 110 , and the pressure rod component 200 applies a bending force toward the screen body 20 from the side of the screen body 20 away from the two supporting parts 110 .

[0085] Step S02: Obtain the bending moment M applied to the screen body 20 .

[0086] Step S03: Obtain the bending section coefficient W of the screen body 20 .

[0087] Step S04: Determine the bending strength of the screen body 20 according to the ratio of the bending moment M to the bending section coefficient W.

[0088] That is, the bending strength σ of the screen body 20 is determined according to the following relationship:

[0089] σ=M / W (1)

[0090] In the test method provided in the embodiment of the present application, the screen body 20 is first placed on the two support parts 110, and then a bending force is applied to the screen body 20 through the pressure rod component 200. Then, the bending moment M of the screen body 20 when it is bent is obtained through step S02, and the bending section coefficient is obtained in step S03. Finally, the bending strength σ of the screen body 20 can be accurately calculated through the above formula (1).

[0091] There are various steps for obtaining the bending moment M of the screen body 20. For example, the bending moment M can be directly obtained by using an instrument. In other optional embodiments, for example Figure 3 As shown, step S02 includes:

[0092] Step S021 : obtaining the bending force F. That is, obtaining the bending force F applied by the pressure rod component 200 to the screen body 20 .

[0093] Step S022: Obtain the moment L of the bending force F.

[0094] Step S023: Determine the bending moment M according to the product of the bending force F and the moment L.

[0095] That is, the bending moment M is determined according to the following relationship:

[0096] M=F*L (2)

[0097] In these optional embodiments, the bending force F applied by the pressure rod component 200 to the screen body 20 is first obtained. Then the moment L of the force F is obtained, and finally the bending moment M can be determined according to the above relationship (2), which can improve the difficulty of the test method.

[0098] In step S022 , one quarter of the distance between the two support portions 110 may be determined as the torque L. That is, when the distance between the two support portions 110 is d during the bending test, L is d / 4.

[0099] Optionally, in step S021 , it may be determined that the force applied to the screen body 20 at the moment of damage is the bending force F. Generally, the force applied to the screen body 20 at the moment of damage can more accurately reflect the anti-bending performance of the screen body 20 .

[0100] There are many methods for obtaining the bending section coefficient W in step S03, for example, the bending section coefficient W can be directly measured. Alternatively, in other optional embodiments, such as Figure 4 As shown, step S03 includes:

[0101] Step S031: Obtain the moment of inertia Iz of the neutral axis of the cross section of the screen body 20 .

[0102] Step S032: Obtain the thickness h of the screen body 20 .

[0103] Step S033: Determine the section coefficient W according to the ratio of the moment of inertia Iz to half the thickness h.

[0104] That is, the section coefficient W is determined according to the following relationship:

[0105] W=Iz / h / 2=2Iz / h (3)

[0106] In these optional embodiments, the moment of inertia Iz is first obtained according to step S031, and then the thickness h of the screen body 20 is obtained according to step S032, and finally the bending section coefficient W is determined according to the above formula (3).

[0107] Optional, such as Figure 5 As shown, the screen body 20 may include a substrate 21, a light-emitting functional layer 24, a packaging frame 22 surrounding the light-emitting functional layer 24, and a cover plate 23. The cover plate 23, the packaging frame 22, and the substrate 21 are connected to each other and enclosed to form a chamber for accommodating the light-emitting functional layer 24. The light-emitting functional layer 24 includes a driving array layer and a light-emitting device layer. The materials of the substrate 21, the packaging frame 22, and the cover plate 23 may all include glass. The substrate 21, the packaging frame 22, and the cover plate 23 may be simplified into a box body. The light-emitting functional layer 24 includes an organic film layer, an inorganic film layer, a metal film layer, etc., and may be simplified into an entity. That is, the screen body 20 may be simplified into a box body in which an entity is arranged.

[0108] In some optional embodiments, such as Figure 6 As shown, step S031 may include:

[0109] Step S0311: Obtain the width b of the screen body 20 and the thickness h of the screen body 20.

[0110] That is, the width dimension b and thickness dimension h of the entire outer portion of the box body.

[0111] Step S0312: Obtain the width b1 and thickness h1 of the light-emitting functional layer 24, that is, the width dimension b1 and thickness dimension h1 of the entity inside the box body.

[0112] Step S0313: According to the relationship (4) Iz = bh 3 / 12-b1h1 3 / 12Determine the moment of inertia Iz.

[0113] In some optional embodiments, the thickness of the screen body 20 is about 0.5 mm, the thickness of the light-emitting functional layer 24 is about 0.005 mm, and the thickness of the light-emitting functional layer 24 is extremely small, resulting in b1h1 3 / 12 has a smaller result, such as b1h1 3 / 12≈10 -5 .

[0114] Optional, when b1h13 / h is less than or equal to 10 -4 When , it can be ignored, then formula (4) can be simplified to:

[0115] Iz=bh 3 / 12 (5)

[0116] In some optional embodiments, the above formulas (1), (2), (3) and (5) can be used to obtain:

[0117] σ=M / W=3Fd / 2bh 2 (6)

[0118] In the test method provided in the embodiment of the present application, the bending resistance of the screen body 20 can be confirmed more accurately and quickly according to the above formula (6).

[0119] Although the present application has been described with reference to preferred embodiments, various modifications may be made thereto and parts thereof may be replaced with equivalents without departing from the scope of the present application. In particular, the various technical features mentioned in the various embodiments may be combined in any manner as long as there are no structural conflicts. The present application is not limited to the specific embodiments disclosed herein, but includes all technical solutions falling within the scope of the claims.

Claims

1. A testing device for testing the bending resistance of a screen, characterized in that: The testing device comprises: The bearing base comprises two supporting parts arranged opposite to each other along a first direction, and the distance between the two supporting parts in the first direction is adjustable; The pressure rod component is arranged on one side of the bearing base in the second direction, the pressure rod component is correspondingly located between two adjacent support parts, and the pressure rod component is movably arranged relative to the bearing base along the second direction.

2. The testing device according to claim 1, characterized in that: The bearing base further comprises a first guide portion extending along the first direction, the two support portions are both arranged on the first guide portion, and at least one of the support portions is movably arranged along the first guide portion in the first direction; Preferably, the first guide portion is provided with scale marks; Preferably, the support portion includes a first connecting hole provided therethrough, and the support portion is sleeved on the first guide portion through the first connecting hole.

3. The testing device according to claim 2, characterized in that: The bearing base further comprises: an adjusting rod, wherein an adjusting hole is provided through one of the supporting parts, the adjusting rod is sleeved in the adjusting hole and abuts against the other supporting part, so that the distance between the two supporting parts can be adjusted by the adjusting rod; Preferably, the adjusting rod has an external thread, and the adjusting hole has an internal thread.

4. The testing device according to claim 2, characterized in that: It also includes a first support frame, and the first guide portion is connected to the first support frame at both ends of the first direction; Preferably, the first support frame comprises a first bottom arm and first side arms connected to both sides of the first bottom arm, and the first side arm and end portions of the first guide portion are connected to each other.

5. The testing device according to claim 1, characterized in that: It also includes a second guide portion extending along the first direction, and the pressure rod component is connected to the second guide portion; Preferably, the pressure rod component includes a second connecting hole provided therethrough, and the pressure rod component is sleeved on the second guide portion through the second connecting hole; Preferably, it further comprises a second support frame, and the second guide portion is connected to the second support frame at both ends in the first direction; Preferably, the second support frame comprises a second bottom arm and second side arms connected to both sides of the second bottom arm, and the second side arm and the end portions of the second guide portion are connected to each other.

6. A screen bending test method, characterized in that: include: The screen body is arranged on one side of the two supporting parts, and the pressure rod component applies a bending force toward the screen body from the side of the screen body away from the two supporting parts; Obtaining the bending moment M applied to the screen; Obtaining the bending resistance coefficient W of the screen body; The bending strength of the screen body is determined according to the ratio of the bending moment M to the bending section coefficient W.

7. The testing method according to claim 6, characterized in that: The step of obtaining the bending moment M exerted on the screen body comprises: Obtaining the bending force F; Obtaining the moment L of the bending force F; Determine the bending moment M according to the product of the bending force F and the moment L; Preferably, a quarter of the distance between the two support parts is determined as the moment L; Preferably, the force to which the screen body is subjected at the moment of destruction is determined to be the bending force F.

8. The testing method according to claim 6, characterized in that: The step of obtaining the bending resistance coefficient W of the screen body comprises: Obtaining the moment of inertia Iz of the neutral axis of the screen cross section; Obtaining the thickness h of the screen body; The section modulus W is determined based on the ratio of the moment of inertia Iz to half of the thickness h.

9. The testing method according to claim 8, characterized in that: The screen body comprises a substrate, a light-emitting functional layer, a packaging frame surrounding the light-emitting functional layer and a cover plate, wherein the cover plate, the packaging frame and the substrate are connected to each other and enclose a cavity for accommodating the light-emitting functional layer, and the light-emitting functional layer comprises a driving array layer and a light-emitting device layer; The step of obtaining the moment of inertia Iz of the neutral axis of the screen cross section comprises: Obtaining the width b and thickness h of the screen body; Obtaining a width b1 of the light-emitting functional layer and a thickness h1 of the light-emitting functional layer; Determine the moment of inertia Iz = bh 3 / 12-b1h1 3 / 12.

10. The testing method according to claim 9, characterized in that: When b1h1 3 / h is less than or equal to 10 -4 When the moment of inertia Iz=bh 3 / 12-b1h1 3 / 12 step: determine Iz = bh 3 / 12.

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