Flexible display screen body bending test system

Abstract

The invention relates to the technical field of bending testing, and discloses a flexible display screen body bending testing system which comprises a supporting plate, a first moving table and a second moving table are symmetrically arranged on the surface of the supporting plate, and a first moving seat and a second moving seat are installed in the first moving table and the second moving table respectively. A fixing plate is fixedly installed at the end, close to the second moving seat, of the first moving seat, a rotating disc is movably arranged on the surface of the fixing plate, the output end of the swing motor is connected with the rotating disc, a swing arm is fixedly installed at the middle end of the rotating disc, and the end of the swing arm is movably sleeved with a clamping mechanism; the surface, close to the first moving seat, of the second moving seat and the end face of the supporting plate are each provided with a positioning mechanism. By means of the two movable positioning mechanisms and the movable clamping mechanism, the effective bending length and the fulcrum position of the display screen can be flexibly and accurately adjusted through the combined action of three points.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bending test, in particular to a flexible display screen body bending test system. BACKGROUND

[0002] Flexible display has many advantages such as ultra-light, ultra-thin, curling, portability, impact resistance, etc., and is an inevitable choice for the development of future display technology. The curved television and curved screen mobile phone on the market all use flexible display panels, and the foldable mobile phones recently launched by many mobile phone manufacturers also use flexible display panels. This technology will be widely used in the fields of portable electronics, wearable electronics, instant messaging, etc. in the future.

[0003] With the development and application of flexible technology, it is very important to develop a flexible display screen bending and twisting characteristic detection device to simulate the influence of bending and twisting characteristics on display screen materials, film characteristics and device structure in the actual work of flexible display screen, and to provide corresponding reliable detection equipment for flexible display screen manufacturers.

[0004] For example, Chinese patent (CN216349997U) discloses a flexible display screen performance testing device, two vertically symmetrical fixed plates are fixedly connected to the upper side of the test table, two horizontally symmetrical electric telescopic rods are respectively inserted and fixedly connected to the side walls of the two fixed plates, and one end of each of the two electric telescopic rods is fixedly connected with a machine shell, and a rotating mechanism is arranged in the machine shell. One end of the rotating mechanism extends outward from the side of the machine shell away from the electric telescopic rod and is fixedly connected with a load sensor. In this patent, the two clamping plates are clamped to fix the flexible display screen at both ends by the clamping mechanism, which is simple to operate and improves the accuracy of performance detection data. The rotating mechanism, the two electric telescopic rods and the load sensor can realize multi-performance testing of the stretching degree, bending degree and twisting degree of the flexible display screen, and the detection range is wider and the detection efficiency is faster.

[0005] In summary, the existing device has limited bending fulcrum fixation or adjustment range, cannot accurately control and flexibly adjust the bending radius, leads to single test condition, cannot scientifically simulate the stress state of the screen body under different folding or bending scenarios, and the reference value of the test data is limited. Moreover, the existing device has low functional integration, usually lacks the ability to synchronously and automatically detect the optical performance of the display screen during the bending process, the mechanical test and the photoelectric performance evaluation are disconnected, and it is difficult to comprehensively and efficiently evaluate the comprehensive reliability of the flexible screen. SUMMARY

[0006] In view of the above problems existing in the prior art, the present application is proposed.

[0007] Therefore, the application aims to provide a flexible display screen body bending test system.

[0008] To solve the above technical problems, the application provides the following technical scheme: a support plate, The surface of the support plate is symmetrically provided with a first moving table and a second moving table, the inner part of the first moving table and the second moving table is respectively provided with a first moving seat and a second moving seat, the top of the first moving seat is provided with an oscillating motor, one end of the first moving seat close to the second moving seat is fixedly provided with a fixed plate, the surface of the fixed plate is movably provided with a rotating disc, the output end of the oscillating motor is connected with the rotating disc, the middle end of the rotating disc is fixedly provided with an oscillating arm, the end of the oscillating arm is movably sleeved with a clamping mechanism, and the surface of the second moving seat close to the first moving seat and the end surface of the support plate are both provided with a positioning mechanism. The two positioning mechanisms and the clamping mechanism are arranged and designed, the clamping mechanism is used for clamping the end of the flexible display screen body, the two positioning mechanisms are used for positioning the surface of the flexible display screen body, and the detection device is arranged above the clamping mechanism.

[0009] As a preferred scheme of the flexible display screen body bending test system, the clamping mechanism comprises a clamping table, the upper side of the clamping table is movably provided with a clamping plate, the two sides of the clamping table are respectively provided with a fixed head and a limiting plate, the inside of the fixed head is threadedly connected with a screw rod, one end of the screw rod close to the clamping plate is provided with a connecting piece, the surface of the connecting piece and the end of the clamping plate are connected with a connecting rod through a rotating shaft, and the other end of the clamping plate is slidably installed on the surface of the limiting plate.

[0010] As a preferred scheme of the flexible display screen body bending test system, the bottom of the clamping plate is provided with a flexible clamping surface.

[0011] As a preferred scheme of the flexible display screen body bending test system, the bottom of the clamping table is fixedly provided with a sleeve ring, the sleeve ring is movably sleeved on the surface of the oscillating arm, the surface of the oscillating arm is provided with a sliding groove, and the surface of the sleeve ring is provided with a locking bolt.

[0012] As a preferred scheme of the flexible display screen body bending test system, the positioning mechanism comprises a frame-shaped support, the inside of the frame-shaped support is fixedly provided with a fixed roller, and the upper side of the fixed roller is movably provided with a pressing roller.

[0013] As a preferred scheme of the flexible display screen body bending test system, the inner wall of the frame-shaped support is provided with a movable groove, the end of the compression roller is movably arranged in the movable groove, and the top of the frame-shaped support is provided with an adjusting bolt connected with the compression roller.

[0014] As a preferred scheme of the flexible display screen body bending test system, the first moving table and the second moving table each include a fixed table, the inside of the fixed table is provided with a lead screw, the end of the fixed table is provided with a stepping motor, the output end of the stepping motor is connected with the lead screw, and the first moving seat and the second moving seat are respectively installed on the surface of the two lead screws through threaded sleeves.

[0015] As a preferred scheme of the flexible display screen body bending test system, the four end corners of the support plate are each provided with a support frame, the top of the support frame is provided with a servo driving mechanism, the detection device includes a luminance meter, and the support frame is connected with the luminance meter through the servo driving mechanism.

[0016] As a preferred scheme of the flexible display screen body bending test system, the side surface of the support plate is provided with a central controller, the central controller is in communication connection with the swing motor, the driving motor of the first moving table, the driving motor of the second moving table and the detection device, the central controller is configured to execute a predetermined test program and synchronously control the bending action and data acquisition.

[0017] As a preferred scheme of the flexible display screen body bending test system, the surface of the fixed plate is provided with a scale.

[0018] The present application has the following beneficial effects: The system composed of the first moving table, the second moving table and the adjustable positioning mechanism realizes accurate and digital control of the bending curvature radius and the bending position, which overcomes the drawbacks of the traditional equipment that can only perform bending at a fixed angle or a fixed radius, makes the test conditions quantifiable and repeatable, and makes the test data more scientific and comparable, thereby providing accurate failure analysis basis for research and development. In addition, the integrated central controller can preset a complex test process, automatically execute and synchronously collect data of the detection device such as the luminance meter, realize long-term fatigue test without manual operation, greatly improve the test efficiency, and completely eliminate human operation errors, thereby ensuring the consistency and reliability of the test results. BRIEF DESCRIPTION OF DRAWINGS

[0019] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following will briefly introduce the drawings needed in the embodiment description. Obviously, the drawings in the following description only show some embodiments of the present application, and for those skilled in the art, other drawings can be obtained from these drawings without any creative effort. Figure 1 It is a schematic diagram of the overall structure of the present application.

[0020] Figure 2 It is a schematic diagram of the support plate structure of the present application.

[0021] Figure 3 It is a schematic diagram of the clamping mechanism structure of the present application.

[0022] Figure 4 It is a schematic diagram of the clamping mechanism structure of the present application from another perspective.

[0023] Figure 5 It is an enlarged view of A in the present application. Figure 2

[0024] Figure 6 It is an enlarged view of B in the present application. Figure 4

[0025] In the figure: 1, support plate; 2, first moving table; 3, second moving table; 4, first moving seat; 5, second moving seat; 6, swing motor; 7, fixed plate; 8, turntable; 9, swing arm; 10, clamping table; 11, collar; 12, locking bolt; 13, fixed head; 14, screw; 15, connecting piece; 16, connecting rod; 17, clamping plate; 18, frame-shaped support; 19, fixed roller; 20, compression roller; 21, support frame; 22, brightness meter. DETAILED DESCRIPTION

[0026] In order to make the above-mentioned objects, features and advantages of the present application more apparent and comprehensible, the following will make a detailed description of the specific embodiments of the present application in combination with the drawings in the specification.

[0027] In the following description, many specific details are set forth in order to provide a thorough understanding of the present application, but the present application can also be practiced in other ways different from those described herein, and those skilled in the art can make similar generalizations without departing from the concept of the present application, therefore the present application is not limited to the specific embodiments disclosed below.

[0028] Secondly, the "one embodiment" or "embodiment" referred to herein means that the specific features, structures or characteristics can be included in at least one implementation of the present application. "In one embodiment" appearing in different places in the specification does not mean the same embodiment, nor is it an embodiment that is independent of or mutually exclusive of other embodiments.​​

[0029] Thirdly, the present application is described in detail in combination with the schematic diagram, in the detailed description of the embodiments of the present application, for the convenience of description, the cross-sectional view of the device structure will be partially enlarged without the general proportion, and the schematic diagram is only an example, which should not limit the scope of protection of the present application herein. In addition, the three-dimensional spatial dimensions of length, width and depth should be included in actual production. Embodiment 1

[0030] Reference Figures 1-6 For the first embodiment of the present application, a flexible display screen body bending test system is provided, the device comprises a support plate 1; The surface of the support plate 1 is symmetrically provided with a first moving table 2 and a second moving table 3, the inner part of the first moving table 2 and the second moving table 3 is respectively provided with a first moving seat 4 and a second moving seat 5, the top of the first moving seat 4 is provided with an oscillating motor 6, one end of the first moving seat 4 close to the second moving seat 5 is fixedly provided with a fixed plate 7, the surface of the fixed plate 7 is movably provided with a turntable 8, the output end of the oscillating motor 6 is connected with the turntable 8, the middle end of the turntable 8 is fixedly provided with an oscillating arm 9, the end of the oscillating arm 9 is movably sleeved with a clamping mechanism, and the surface of the second moving seat 5 close to the first moving seat 4 and the end surface of the support plate 1 are both provided with a positioning mechanism. The two positioning mechanisms and the clamping mechanism are arranged and designed, the clamping mechanism is used for clamping the end of the flexible display screen body, the two positioning mechanisms are used for positioning the surface of the flexible display screen body, and the upper side of the clamping mechanism is provided with a detection device.

[0031] In use, one end of the flexible display screen body to be tested is firmly fixed by the clamping mechanism, the middle part and the other end of the display screen body are respectively constrained and positioned by the two positioning mechanisms, the three points jointly determine the bending area of the display screen, by driving the first moving table 2 and the second moving table 3, the distance between the first moving seat 4 and the second moving seat 5 can be changed, at the same time, the other positioning mechanism at the end of the support plate 1 can also be moved, which changes the span between the three positioning points, so as to change the effective length and the radius of curvature in bending, in the execution work, the oscillating motor 6 is started to drive the turntable 8 to rotate, the turntable 8 drives the oscillating arm 9 to make circular motion, the clamping mechanism at the end of the oscillating arm 9 moves accordingly, drives one end of the clamped flexible display screen body, so that it is bent around the two positioning mechanisms, during the bending process or after bending to the specified angle, the detection device above the clamping mechanism starts to work to monitor and collect data in real time on the display effect brightness, color spot, bad point and the like of the flexible display screen body, the oscillating motor 6 can be reversely rotated to make the display screen restore flat, and then bent again, so as to circulate repeatedly to perform fatigue life test.

[0032] In summary, through the cooperation of the two movable positioning mechanisms and the movable clamping mechanism, the bending effective length of the display screen and the fulcrum position can be flexibly and accurately adjusted, so as to realize the standardized and repeatable testing of different curvature radii, and the testing data is more scientific and has more reference value.

[0033] Further, the clamping mechanism comprises a clamping table 10, a clamping plate 17 movably arranged above the clamping table 10, a fixed head 13 and a limiting plate arranged on the two sides of the clamping table 10 respectively, a screw rod 14 threadedly connected in the fixed head 13, a connecting piece 15 arranged on one end of the screw rod 14 close to the clamping plate 17, a connecting rod 16 connected to the end of the clamping plate 17 and the surface of the connecting piece 15 through a rotating shaft, the other end of the clamping plate 17 slidingly installed on the surface of the limiting plate, a flexible clamping surface installed on the bottom of the clamping plate 17, a sleeve ring 11 fixedly installed on the bottom of the clamping table 10, the sleeve ring 11 movably sleeved on the surface of the swing arm 9, a sliding groove formed on the surface of the swing arm 9, and a locking bolt 12 penetrating through the surface of the sleeve ring 11.

[0034] In work, when the screw rod 14 is manually or driven by a motor to rotate, the screw rod 14 threadedly matched with the screw rod 14 generates axial displacement, pushes the connecting piece 15 to move linearly, the movement of the connecting piece 15 is transmitted to the clamping plate 17 through the connecting rod 16, and since one end of the clamping plate 17 is limited in the track of the limiting plate, only linear movement parallel to the table surface of the clamping table 10 can be performed, so that the inclined movement of the connecting rod 16 is accurately converted into the parallel opening and closing of the clamping plate 17, and the whole clamping mechanism is sleeved on the swing arm 9 through the sleeve ring 11, the locking bolt 12 is loosened, the clamping table 10 can slide along the sliding groove on the swing arm 9, so as to change the distance between the clamping point and the swing axis.

[0035] In summary, the combination of the screw rod 14 and the connecting rod 16 produces a huge mechanical gain, the operator only needs to exert a small rotary torque, and a huge clamping force can be generated on the clamping plate 17, which ensures the firmness of clamping, the parallel movement of the clamping plate 17 ensures that the flexible clamping surface at the bottom can be uniformly pressed on the whole clamping area of the display screen, effectively avoiding stress concentration caused by point contact or line contact, and fundamentally preventing indentation or micro-cracks on the edge of the flexible screen caused by clamping, and by adjusting the position of the sleeve ring 11 on the swing arm 9, the effective arm length of the bending motion is essentially changed, when the arm length is shortened, the same swing angle will produce a smaller bending radius, and when the arm length is lengthened, the bending radius will be larger, which makes a single device can easily simulate various real scenes from severe folding to gentle bending, greatly expanding the testing range and application value.

[0036] Further, the positioning mechanism comprises a frame-shaped support 18, a fixed roller 19 is fixedly installed in the frame-shaped support 18, a pressing roller 20 is movably arranged above the fixed roller 19, a movable groove is formed in the inner wall of the frame-shaped support 18, the end of the pressing roller 20 is movably arranged in the movable groove, and the top of the frame-shaped support 18 is provided with an adjusting bolt connected with the pressing roller 20.

[0037] In use, the display screen passes through the roller gap formed by the fixed roller 19 and the pressing roller 20 in a straight manner, the pressing force applied by the pressing roller 20 downward can be accurately controlled by rotating the adjusting bolt, the fixed roller 19 and the pressing roller 20 provide a clear and linear bending fulcrum, the repeatability of the bending deformation is ensured, and the display screen is allowed to have a slight free sliding in the length direction during the bending and restoring processes, so that the tensile stress caused by the change of the bending arc length is released.

[0038] In summary, the traditional rigid clamping will generate unnecessary tensile stress on the screen body during bending, the test condition is not pure, the roller positioning mechanism of the design maximally simulates the mechanical state of pure bending, the test result can more truly reflect the performance of the screen body under the single stress of bending, and the data is more scientific and has more reference value.

[0039] Further, the first moving table 2 and the second moving table 3 each comprise a fixed table, a lead screw is arranged in the fixed table, a stepping motor is arranged at the end of the fixed table, the output end of the stepping motor is connected with the lead screw, and the first moving seat 4 and the second moving seat 5 are respectively arranged to be screwed on the surfaces of the two lead screws.

[0040] In use, the stepping motor receives the pulse signal from the central controller, the rotation angle is accurately controlled, and then the lead screw is driven to rotate, and the first moving seat 4 and the second moving seat 5 screwed with the lead screw are converted into high-precision linear displacement. Embodiment 2

[0041] Reference Figure 1 , 5 For the second embodiment of the application, which is different from the first embodiment, four support frames 21 are arranged at the four end corners of the support plate 1, a servo driving mechanism is arranged at the top of the support frame 21, the detection device comprises a brightness meter 22, and the support frame 21 is connected with the brightness meter 22 through the servo driving mechanism.

[0042] In use, the servo driving mechanism drives the brightness meter 22 to move in the three-dimensional space defined by the support frame 21.

[0043] Further, the support plate 1 is provided with a central controller on the side, which is in communication connection with the swing motor 6, the driving motor of the first moving table 2, the driving motor of the second moving table 3 and the detection device, and the central controller is configured to execute a predetermined test program and synchronously control the bending action and data acquisition.

[0044] In use, the test program is pre-set in the central controller, which not only sends action instructions to each motor, but also receives data feedback from the detection device, and synchronously controls the operation of the entire system according to the preset logic.

[0045] Further, the surface of the fixed plate 7 is provided with a scale.

[0046] In use, the scale on the fixed plate 7 provides an intuitive visual reference for the initial, coarse manual setting, helping to quickly adjust the mechanism to the approximate required position.

[0047] Importantly, it should be noted that the construction and arrangement of the application shown in the various exemplary embodiments is illustrative only. Although only a few embodiments have been described in detail in this disclosure, those skilled in the art who review this disclosure will readily appreciate that many modifications are possible (e.g., variations in sizes, dimensions, structures, shapes and proportions of the various elements, values of parameters, mounting arrangements, use of materials, colors, orientations, etc.) without materially departing from the novel teachings and advantages of the subject matter described in the application. For example, elements shown as integrally formed can be constructed of multiple parts or elements, the position of elements can be reversed or otherwise varied, and the nature or number of elements or positions can be altered or varied. Accordingly, all such variations are intended to be included within the scope of the present application. The order or sequence of any process or method steps can be varied or re-sequenced without materially affecting the application. Any "means plus function" clauses are intended to cover the structures described herein as performing the recited functionality and not only structural equivalents but also equivalent structures. Other substitutions, modifications, changes, and omissions can be made in the design, operating conditions, and arrangement of the exemplary embodiments without departing from the scope of the present application. Accordingly, the present application is not limited to the particular embodiments described and illustrated herein, but extends to equivalents of which the skilled artisan has knowledge of based on this disclosure.

[0048] Furthermore, in order to provide a concise description of exemplary embodiments, all features of an actual implementation can not be described (i.e., those unrelated to the best mode of practicing the application currently being considered).

[0049] It should be noted that the above examples are only used to illustrate the technical solutions of the present application but not limit the present application. Although the present application is described in detail with reference to the preferred embodiments, those skilled in the art should understand that the technical solutions of the present application can be modified or equivalently replaced, without departing from the spirit and scope of the technical solutions of the present application, which should be covered in the scope of the claims of the present application.

Claims

1. A flexible display screen bending test system, characterized in that: It includes support plate (1); The surface of the support plate (1) is symmetrically provided with a first moving table (2) and a second moving table (3), the inner part of the first moving table (2) and the second moving table (3) is respectively provided with a first moving seat (4) and a second moving seat (5), the top of the first moving seat (4) is provided with an oscillating motor (6), one end of the first moving seat (4) close to the second moving seat (5) is fixedly provided with a fixed plate (7), the surface of the fixed plate (7) is movably provided with a turntable (8), the output end of the oscillating motor (6) is connected with the turntable (8), the middle end of the turntable (8) is fixedly provided with an oscillating arm (9), the end of the oscillating arm (9) is movably sleeved with a clamping mechanism, the surface of the second moving seat (5) close to the first moving seat (4) and the end surface of the support plate (1) are both provided with a positioning mechanism. Two positioning mechanisms and the clamping mechanism are arranged and designed, the clamping mechanism is used for clamping the end of the flexible display screen body, and the two positioning mechanisms are used for positioning the surface of the flexible display screen body, and the detection device is arranged above the clamping mechanism.

2. The flexible display screen bending test system of claim 1, wherein: The clamping mechanism comprises a clamping table (10), the upper side of the clamping table (10) is movably provided with a clamping plate (17), the two sides of the clamping table (10) are respectively provided with a fixed head (13) and a limiting plate, the inside of the fixed head (13) is threadedly connected with a screw rod (14), one end of the screw rod (14) close to the clamping plate (17) is provided with a connecting piece (15), the surface of the connecting piece (15) and the end of the clamping plate (17) are connected with a connecting rod (16) through a rotating shaft, and the other end of the clamping plate (17) is slidably installed on the surface of the limiting plate.

3. The flexible display screen bending test system of claim 2, wherein: The bottom of the clamping plate (17) is provided with a flexible clamping surface.

4. The flexible display screen bending test system of claim 2, wherein: The bottom of the clamping table (10) is fixedly provided with a sleeve ring (11), the sleeve ring (11) is movably sleeved on the surface of the oscillating arm (9), the surface of the oscillating arm (9) is provided with a sliding groove, and the surface of the sleeve ring (11) is provided with a locking bolt (12).

5. The flexible display screen bending test system of claim 1, wherein: The positioning mechanism comprises a frame-shaped support (18), the inside of the frame-shaped support (18) is fixedly provided with a fixed roller (19), and the upper side of the fixed roller (19) is movably provided with a pressing roller (20).

6. The flexible display screen bending test system of claim 5, wherein: The inner wall of the frame-shaped support (18) is provided with a movable groove, the end of the pressing roller (20) is movably arranged in the movable groove, and the top of the frame-shaped support (18) is provided with an adjusting bolt connected with the pressing roller (20).

7. The flexible display screen bending test system of claim 1, wherein: The first moving table (2) and the second moving table (3) both comprise a fixed table, the inside of the fixed table is provided with a lead screw, the end of the fixed table is provided with a stepping motor, the output end of the stepping motor is connected with the lead screw, and the first moving seat (4) and the second moving seat (5) are respectively installed on the surface of two lead screws through threaded sleeves. 8.The flexible display screen bending test system of claim 1, wherein: Support frames (21) are installed at four corners of the support plate (1), a top of the support frame (21) is provided with a servo driving mechanism, the detection device comprises a brightness meter (22), and the support frame (21) is connected with the brightness meter (22) through the servo driving mechanism. 9.The flexible display screen bending test system of claim 1, wherein: A central controller is arranged on a side of the support plate (1), the central controller is in communication connection with the swing motor (6), drive motors of the first moving table (2) and the second moving table (3) and the detection device, and the central controller is configured to execute a predetermined test program and synchronously control a bending action and data acquisition.

10. The flexible display screen bending test system of claim 1, wherein: A scale is arranged on a surface of the fixing plate (7).

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