An aging test device for display module

Abstract

The application provides an aging test device of a display module, wherein the aging test device comprises: a shell, an accommodating cavity is formed in the shell, and the shell comprises first and second side walls arranged oppositely; the first and second side walls are respectively provided with first and second exhaust holes; an air inlet pipeline is connected between the inside and outside of the shell and is used for introducing air outside the shell into the shell; the air inlet pipeline comprises a plurality of first and second air outlet holes, the first air outlet holes are directed to the first exhaust holes, and the second air outlet holes are directed to the second exhaust holes; and a plurality of carriers are arranged in the shell and are used for carrying the display module. The aging test device can keep good temperature uniformity at each position, so that problems caused by local overheating and local temperature failure can be effectively avoided.

Description

Technical Field

[0001] This application relates to the technical field of mechanical equipment, specifically to an aging test device for display modules. Background Technology

[0002] Currently, during the production stage of display modules, in order to ensure the excellent performance of the products leaving the factory, it is usually necessary to conduct aging tests on the display modules. These aging tests are usually carried out under certain temperature conditions, generally 50℃ to 580℃, in order to stimulate the occurrence of display defects in the module's reliability.

[0003] However, existing methods typically use aging ovens to meet the temperature requirements for display module aging tests. These aging ovens generally use a heating and blowing structure with the air inlet located on one side of the bottom of the oven. The air is either directly discharged from the side outlets to a dedicated exhaust pipe or returned to the heating and blowing unit. This results in disordered flow of hot air within the oven, preventing even distribution and even creating vortex airflow in some areas. This exacerbates temperature differences between different locations within the oven. For example, at a common aging temperature of 60°C, the difference between the highest and lowest temperatures inside the oven can reach 10°C. Furthermore, the platform structure holding the modules obstructs the vertical flow of hot air, significantly increasing the temperature difference between the bottom and top layers of the oven. During the heating process, the heating unit stops prematurely due to the real-time monitoring of the highest temperature inside the oven, preventing lower-temperature areas from reaching the set process temperature.

[0004] However, when the temperature inside the aging oven used for aging tests of display modules is uneven, local overheating can easily occur near the hot air inlet, causing other defects in the display modules. This can result in the loss of a small number of good products or even a large number of scrapped units. On the other hand, if the local temperature does not meet the standard, that is, if the set process temperature is not reached, it usually occurs far from the hot air inlet. This will cause the aging test to fail, and the unreliable display defects will be missed in subsequent processes or even at the customer's end, which will seriously damage the company's quality image. Summary of the Invention

[0005] This application provides an aging test device for display modules to solve the problem that the temperature inside the existing aging oven is usually uneven when aging tests are performed on display modules, which leads to local overheating damage to the module products and failure of the aging test due to local temperature failure.

[0006] To address the aforementioned technical problems, this application provides an aging test device for display modules. The aging test device includes: a housing with an internal cavity; the housing includes a first sidewall and a second sidewall disposed opposite to each other; a first exhaust port and a second exhaust port are respectively provided on the first and second sidewalls; an air inlet pipe connecting the interior and exterior of the housing for introducing gas from outside the housing into the housing; the air inlet pipe includes multiple first exhaust ports and multiple second exhaust ports, with the first exhaust ports facing the first exhaust ports and the second exhaust ports facing the second exhaust ports; and multiple platforms disposed within the housing for supporting the display modules.

[0007] The air intake pipe includes a horizontal pipe and a vertical pipe that are connected. An air inlet is also provided on the first side wall. The horizontal pipe passes through the air inlet to connect the inside and outside of the housing. The vertical pipe is provided with multiple first air outlets and multiple second air outlets.

[0008] Multiple platforms are connected to the inner wall of the shell or the vertical pipe, and are arranged in a matrix at intervals on opposite sides of the vertical pipe.

[0009] In the direction of the vertical pipe away from the horizontal pipe, the distance between two adjacent first air outlets gradually decreases, and the distance between two adjacent second air outlets also gradually decreases.

[0010] In the direction away from the horizontal pipe in the vertical pipe, the diameter of the multiple first air outlets gradually increases, and the diameter of the multiple second air outlets gradually increases; preferably, the distance between the centers of every two adjacent first air outlets is equal, and the distance between the centers of every two adjacent second air outlets is equal.

[0011] The intake pipe also includes at least two connecting pipes, which are spaced apart and connected to the horizontal pipe. At least two vertical pipes are also spaced apart on the connecting pipes, and the connecting pipes are connected to the vertical pipes. Preferably, the connecting pipes are located in the same plane, which is parallel to the third side wall of the housing.

[0012] The aging test device also includes a blower box, multiple temperature sensors, and a controller. The blower box is connected to the air intake pipe and the controller, and is in communication with the air intake pipe. The temperature sensors are connected to the controller and correspond to the inner wall of the housing or the air intake pipe, respectively, to detect the ambient temperature near the platform and send a feedback signal to the controller based on the ambient temperature, so that the controller controls the blower box to charge hot air into the air intake pipe or to stop charging hot air according to the feedback signal.

[0013] The aging test device also includes a return pipe, one end of which is connected to the blower box, and the other end of which passes through the first exhaust port and the second exhaust port to connect the inside and outside of the housing. Preferably, one end of the return pipe is also provided with a first solenoid valve, which is connected to a controller. When the controller determines, based on the feedback signal, that the temperature inside the accommodating cavity exceeds a first set threshold, the first solenoid valve is triggered to open so as to introduce the hot air in the accommodating cavity into the blower box.

[0014] The aging test device also includes a first exhaust pipe and a second exhaust pipe. The first exhaust pipe passes through a first exhaust hole and protrudes from the first side wall towards the outside of the housing. The second exhaust pipe passes through a second exhaust hole and protrudes from the second side wall towards the outside of the housing.

[0015] The first and / or second air outlet pipes are also equipped with a second solenoid valve. The second solenoid valve is connected to the controller to receive a second control signal sent by the controller and adjust the opening degree of the second solenoid valve under the action of the second control signal.

[0016] The beneficial effects of this application are as follows: Unlike the prior art, the aging test device provided in this application has a cavity inside the housing, and a first exhaust hole and a second exhaust hole are respectively provided on the first side wall and the second side wall opposite to each other on the housing. The air inlet pipe connects the inside and outside of the housing and is used to introduce gas from outside the housing into the housing. The air inlet pipe also includes multiple first exhaust holes and multiple second exhaust holes. The first exhaust holes face the first exhaust hole, and the second exhaust holes face the second exhaust hole. Multiple platforms are disposed inside the housing and are used to support the display module. When hot gas is filled into the air inlet pipe, the hot gas can enter the housing through the first exhaust hole and the second exhaust hole, and be discharged into the cavity inside the housing through the first exhaust hole and the second exhaust hole, so that the hot gas can be directly supplied to each position in the cavity. Furthermore, since the first vent and the first exhaust vent are aligned, and the second vent and the second exhaust vent are aligned, the hot air will flow horizontally outward within the accommodating cavity, without generating vortex airflow. This effectively prevents uncontrolled local temperatures, thereby achieving synchronous heating at all locations within the accommodating cavity and ensuring temperature consistency. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of one embodiment of the aging test device for the display module in this application. Detailed Implementation

[0019] The present application will now be described in further detail with reference to the accompanying drawings and embodiments. It should be particularly noted that the following embodiments are for illustrative purposes only and do not limit the scope of the application. Similarly, the following embodiments are only some, not all, embodiments of the present application, and all other embodiments obtained by those skilled in the art without inventive effort are within the scope of protection of the present application.

[0020] The terms "first," "second," and "third" in this application are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Therefore, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of that feature. The term "multiple" in the description of this application means at least two, such as two, three, etc., unless otherwise explicitly specified. All directional indications (such as up, down, left, right, front, back, etc.) in the embodiments of this application are only used to explain the relative positional relationships and movement of components in a specific orientation (as shown in the figures). If the specific orientation changes, the directional indications also change accordingly. Furthermore, the terms "comprising" and "having," and any variations thereof, are intended to cover non-exclusive inclusion. For example, a process, method, system, product, or device that includes a series of steps or units is not limited to the listed steps or units, but may optionally include steps or units not listed, or may optionally include other steps or units inherent to these processes, methods, products, or devices.

[0021] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of this application. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.

[0022] Please see Figure 1 , Figure 1 This is a schematic diagram of one embodiment of the aging test device for the display module shown in this application. In this embodiment, the aging test device 10 includes: a housing 11, an air inlet pipe 12, and multiple platforms 13.

[0023] Specifically, the aging test device 10 provided in this application can be used to house display modules for heating. For example, multiple display modules can be placed on multiple platforms 13, and hot air can be injected into the housing 11 of the aging test device 10 to simultaneously heat the multiple display modules, thereby completing the corresponding aging test. Of course, in other embodiments, the aging test device 10 can also be used for aging tests of other reasonable electronic devices or materials, and this embodiment does not limit this application.

[0024] It is worth noting that this aging test refers to putting the device under test in an unconventional and special environment, or making the device under test operate beyond its specifications. As long as the performance of the device can be guaranteed to be stable under these conditions, then it will work normally under normal conditions. This test is a way to examine the stability of the product by testing its functions.

[0025] Specifically, the housing 11 of the aging test device 10 is hollow inside, forming a receiving cavity, and the housing 11 further includes a first side wall 111 and a second side wall 112 disposed opposite to each other. The first side wall 111 is provided with a first exhaust hole (not shown in the figure), and the second side wall 112, which is directly opposite to the first side wall 111, is provided with a second exhaust hole (not shown in the figure).

[0026] Furthermore, the air inlet pipe 12 of the aging test device 10 is connected to the inside and outside of the housing 11 to introduce gas from outside the housing 11 into the housing 11.

[0027] The air intake pipe 12 also includes multiple first air outlets (not shown in the figure) and multiple second air outlets (not shown in the figure). The first air outlets are oriented towards the first exhaust port and are in the same direction as the first exhaust port. The second air outlets are oriented towards the second exhaust port and are in the same direction as the second exhaust port.

[0028] Furthermore, multiple platforms 13 are correspondingly disposed within the housing 11 to support the display module, so that when hot air is filled into the air inlet pipe 12, the hot air can enter the accommodating cavity inside the housing 11 through the first air outlet and the second air outlet, and then be discharged from the accommodating cavity through the first exhaust port and the second exhaust port.

[0029] The above solution, by providing a portion of the air intake pipe 12 inside the housing 11, and providing a first air outlet and multiple second air outlets on this portion of the air intake pipe 12, allows the hot air filled into the air intake pipe 12 to be directly supplied to various positions in the housing 11 cavity, thus ensuring the uniformity of temperature at various positions in the housing 11 cavity during the heating stage; and enabling all positions in the housing 11 cavity to heat up synchronously to reach the process set temperature simultaneously, it also effectively eliminates the frequent opening and closing of the corresponding heating unit when the temperature in the housing 11 cavity is close to the process set temperature.

[0030] Furthermore, since the first vent and the first exhaust port are aligned, and the second vent and the second exhaust port are aligned, the hot air will flow horizontally outward within the accommodating cavity without generating vortex airflow. This effectively avoids obstruction by the platform 13, thereby effectively preventing uncontrolled local temperatures and reducing heat loss. This ensures that all locations within the accommodating cavity of the housing 11 are heated synchronously and that temperature consistency is maintained.

[0031] In one embodiment, the air intake pipe 12 further includes a horizontal pipe 121 and a vertical pipe 122 that are connected to each other, and an air inlet (not shown in the figure) is provided on the first side wall 111 of the housing 11. The horizontal pipe 121 specifically passes through the air inlet to connect the inside and outside of the housing 11, and the vertical pipe 122 is specifically provided with a plurality of first air outlets and a plurality of second air outlets.

[0032] Optionally, the air inlet may be located on the first sidewall 111 of the housing 11 near the edge, or at any other reasonable location, which is not limited in this application.

[0033] In one embodiment, the number of vertical pipes 122 in the air intake pipe 12 is at least two, and the at least two vertical pipes 122 are spaced apart from each other and connected to the horizontal pipe 121 at a set angle, and are connected to the horizontal pipe 121.

[0034] Optionally, the set angle can be any reasonable angle such as 80°, 90° or 110°, and preferably 90°. This application does not limit this.

[0035] In one embodiment, the transverse pipe 121 passes through an air inlet on the first side wall 111 of the housing 11 and extends in a direction parallel to the third side wall 113 of the housing 11 to connect to a heating unit outside the housing 11 that can provide hot air, and to guide the hot air provided by the heating unit into a receiving cavity inside the housing 11. Specifically, the third side wall 113 of the housing 11 is perpendicular to its first side wall 111.

[0036] Furthermore, the vertical pipe 122 is specifically connected at one end to the horizontal pipe 121, and at the other end to the fourth side wall 114 of the housing 11, so as to provide fixed support for the vertical pipe 122. The fourth side wall 114 of the housing 11 is specifically the two side walls opposite to its third side wall 113.

[0037] In one embodiment, the multiple platforms 13 in the aging test device 10 are specifically connected to the inner wall of the housing 11 or the vertical pipe 122, and are arranged in a matrix at intervals on opposite sides of the vertical pipe 122.

[0038] In one embodiment, the number of first vent holes on the first sidewall 111 of the housing 11 is specifically at least two, and the at least two first vent holes are spaced apart from each other and located on the same straight line to form a row of first vent holes; the number of second vent holes on the second sidewall 112 of the housing 11 is also specifically at least two, and the at least two second vent holes are spaced apart from each other and located on the same straight line to form a row of second vent holes; and the at least two second vent holes correspond one-to-one with the at least two first vent holes, and at least two platforms 13 are also provided at intervals on the line connecting each pair of first vent holes and second vent holes to support at least two display modules located on the same level, that is, a row of display modules.

[0039] In another embodiment, the aging test device 10 further includes at least two connecting pipes (not shown in the figure), and the at least two connecting pipes are connected to each other at intervals on the horizontal pipe 121 of the air intake pipe 12 and are connected to the horizontal pipe 121; at least two vertical pipes 122 are also connected to the connecting pipes at intervals, and the connecting pipes are connected to the vertical pipes 122 respectively.

[0040] Preferably, at least two connecting pipes are located in the same plane, and the plane is parallel to the third sidewall 113 of the housing 11.

[0041] Optionally, a platform 13 for supporting the display module is vertically connected to each of the opposite sides of the vertical pipe 122.

[0042] Specifically, the first exhaust hole group on the first side wall 111 of the housing 11 may include multiple rows, and the multiple rows of first exhaust hole groups are spaced apart from each other. Each row of first exhaust hole groups is provided with a row of vertical pipes 122, so as to effectively increase the number of display modules that the aging test device 10 can simultaneously accommodate, thereby effectively improving the efficiency of aging test on the display modules.

[0043] In one embodiment, in the direction of the vertical pipe 122 away from the air intake pipe 12, the distance between each two adjacent first air outlets gradually decreases, and the distance between each two adjacent second air outlets gradually decreases.

[0044] Understandably, when hot air enters the vertical pipe 122 from the horizontal pipe 121 of the air inlet pipe 12, the pressure drop and heat loss increase as the air moves further away from the horizontal pipe 121. By gradually increasing the density of the first and second air outlets, the supply of hot air to the first and second air outlets in the vertical pipe 122 away from the air inlet pipe 12 can be gradually increased. This can effectively compensate for the pressure drop and heat loss, thereby supplying different flow rates of hot air to different locations in the housing 11 cavity and ensuring the uniformity of temperature at each location.

[0045] In another embodiment, in the direction of the vertical pipe 122 away from the air inlet pipe 12, the diameter of the plurality of first air outlets gradually increases, and the diameter of the plurality of second air outlets gradually increases, so as to gradually increase the amount of hot air supplied to the first air outlets and second air outlets of each vertical pipe 122 away from the air inlet pipe 12, thereby effectively compensating for the reduction in air pressure and the loss of heat in circulation, so as to achieve the supply of hot air at different flow rates to each position in the housing 11 accommodating cavity, and ensure the uniformity of temperature at each position.

[0046] Preferably, in the direction away from the air intake pipe 122 in the vertical pipe 122, the diameter of the plurality of first air outlets gradually increases, and the diameter of the plurality of second air outlets gradually increases. Specifically, the distance between the centers of each two adjacent first air outlets can be equal or gradually decrease, and the distance between the centers of each two adjacent second air outlets can specifically be equal or gradually decrease. This application does not limit this.

[0047] In one embodiment, the aging test apparatus 10 further includes a blower box (not shown), multiple temperature sensors 15, and a controller (not shown). The blower box is specifically connected to the air intake pipe 12 and the controller, and is in communication with the air intake pipe 12. The temperature sensors 15 are connected to the controller and respectively to the inner wall of the housing 11 or the air intake pipe 12 corresponding to the stage 13. They are used to detect the ambient temperature near the stage 13 in the housing 11's accommodating cavity and send a feedback signal to the controller based on the ambient temperature. The controller then controls the blower box to inject hot air into the air intake pipe 12 or stops injecting hot air into the air intake pipe 12 according to the feedback signal.

[0048] In one embodiment, the aging test device 10 further includes a return pipe (not shown in the figure), one end of which is connected to the blower box, and the other end of which passes through the first exhaust port and the second exhaust port to connect the inside and outside of the housing 11. This allows the hot air in the accommodating cavity inside the housing 11 to be reintroduced into the blower box, so that the blower box can circulate the hot air into the intake pipe 12, thereby effectively avoiding excessive energy loss during the aging test.

[0049] Preferably, a first solenoid valve (not shown in the figure) is also provided at one end of the return pipe. The first solenoid valve is connected to the controller so that when the controller determines that the temperature in the housing 11 cavity exceeds the first set threshold according to the feedback signal sent by the temperature sensor 15, the first solenoid valve can be triggered to open so as to introduce the hot air in the housing cavity into the blower box.

[0050] In one embodiment, an opening is provided on the return pipe, and a solenoid valve is provided on the opening. The solenoid valve is connected to the controller so that when the controller determines that the temperature inside the housing 11 cavity is lower than the first set threshold based on the feedback signal sent by the temperature sensor 15, the solenoid valve can be triggered to open and the first solenoid valve can be triggered to close simultaneously so that the hot air in the housing 11 cavity can be directly discharged to the factory exhaust system.

[0051] Optionally, the first set threshold can be one of 45℃-65℃, and this application does not limit it.

[0052] In one embodiment, the aging test apparatus 10 further includes an alarm device (not shown in the figure), which is connected to the controller so that when the controller determines, based on the feedback signal sent by the temperature sensor 15, that the temperature inside the housing 11 cavity is lower than a second set threshold, it can send a first control signal to the alarm device to trigger the alarm device to issue an audible and visual alarm.

[0053] Specifically, the second set threshold can be the minimum process temperature for the display module to undergo aging tests, so that when the alarm device issues an audible and visual alarm, it can remind the test personnel that the temperature of the hot air filled into the housing 11 is not up to standard and that the fault needs to be checked and additional heating is required.

[0054] In one embodiment, the aging test device 10 further includes a first exhaust pipe 161 and a second exhaust pipe 162. The first exhaust pipe 161 is correspondingly inserted into a first exhaust hole on the first side wall 111 of the housing 11 and protrudes from the first side wall 111 toward the outside of the housing 11.

[0055] The second exhaust pipe 162 is correspondingly installed in the second exhaust hole on the second side wall 112 of the housing 11, and protrudes from the second side wall 111 toward the outside of the housing 11 to facilitate the exhaust of hot air from the internal cavity of the housing 11, and to facilitate the connection of the return pipe with the internal cavity of the housing 11 through the first exhaust pipe 161 and the second exhaust pipe 162.

[0056] Furthermore, in one embodiment, a second solenoid valve (not shown in the figure) is also provided on the first air outlet pipe 161 and / or the second air outlet pipe 162. The second solenoid valve is also connected to the controller so as to receive the second control signal sent by the controller and adjust the opening degree of the second solenoid valve under the action of the second control signal. When hot air is filled into the housing 11 accommodating cavity and aging test is performed on the display module, the second solenoid valve can be closed to avoid heat loss. When the test ends, the second solenoid valve is opened to exhaust the air.

[0057] It is worth noting that the valve opening degree refers to a percentage. Generally, butterfly valves are expressed in angles: 0 degrees means fully closed and 90 degrees means fully open.

[0058] The beneficial effects of this application are as follows: Unlike the prior art, the aging test device provided in this application has a cavity inside the housing, and a first exhaust hole and a second exhaust hole are respectively provided on the first side wall and the second side wall opposite to each other on the housing. The air inlet pipe connects the inside and outside of the housing and is used to introduce gas from outside the housing into the housing. The air inlet pipe also includes multiple first exhaust holes and multiple second exhaust holes. The first exhaust holes face the first exhaust hole, and the second exhaust holes face the second exhaust hole. Multiple platforms are disposed inside the housing and are used to support the display module. When hot gas is filled into the air inlet pipe, the hot gas can enter the housing through the first exhaust hole and the second exhaust hole, and be discharged into the cavity inside the housing through the first exhaust hole and the second exhaust hole, so that the hot gas can be directly supplied to each position in the cavity. Furthermore, since the first vent and the first exhaust vent are aligned, and the second vent and the second exhaust vent are aligned, the hot air will flow horizontally outward within the accommodating cavity, without generating vortex airflow. This effectively prevents uncontrolled local temperatures, thereby achieving synchronous heating at all locations within the accommodating cavity and ensuring temperature consistency.

[0059] The above description is only a part of the embodiments of this application and does not limit the scope of protection of this application. Any equivalent device or equivalent process transformation made based on the content of this application specification and drawings, or direct or indirect application in other related technical fields, are similarly included in the patent protection scope of this application.

Claims

1. An aging test device for a display module, characterized in that, The aging test device comprises: a housing, an accommodating cavity is formed in the interior of the housing, the housing comprises a first side wall and a second side wall arranged oppositely; a first exhaust hole and a second exhaust hole are respectively arranged on the first side wall and the second side wall; an air inlet pipeline, which is connected to the interior and the exterior of the housing, is used to introduce the gas outside the housing into the housing; the air inlet pipeline comprises a plurality of first air outlet holes and a plurality of second air outlet holes, the first air outlet holes and the second air outlet holes are arranged oppositely, the first air outlet holes are directed towards the first exhaust hole, the second air outlet holes are directed towards the second exhaust hole, the first air outlet holes are consistent with the first exhaust hole in direction, the second air outlet holes are consistent with the second exhaust hole in direction, wherein the hot gas enters the accommodating cavity from the first air outlet holes and the second air outlet holes, and then the hot gas is exhausted from the accommodating cavity through the first exhaust hole and the second exhaust hole; a plurality of carriers arranged in the housing and used to carry display modules; wherein the air inlet pipeline comprises a horizontal pipeline and a vertical pipeline connected to each other, the first side wall is further provided with an air inlet, and the horizontal pipeline penetrates through the air inlet to connect the interior and the exterior of the housing, and the vertical pipeline is provided with a plurality of first air outlet holes and a plurality of second air outlet holes; wherein in the direction away from the horizontal pipeline, the distance between adjacent two first air outlet holes gradually decreases, and the distance between adjacent two second air outlet holes gradually decreases.

2. The aging test device for display modules according to claim 1, characterized in that the plurality of carriers are connected to the inner side wall of the housing or the vertical pipeline, and are arranged in a matrix interval on opposite sides of the vertical pipeline.

3. The aging test device for display modules according to claim 1, characterized in that in the direction away from the horizontal pipeline, the hole diameter of the plurality of first air outlet holes gradually increases, and the hole diameter of the plurality of second air outlet holes gradually increases.

4. The display module burn-in test apparatus of claim 3, wherein the distance between the centers of adjacent two first air outlet holes is equal, and the distance between the centers of adjacent two second air outlet holes is equal.

5. The aging test device for display modules according to claim 1, characterized in that the air inlet pipeline further comprises at least two connecting pipelines, the at least two connecting pipelines are connected to the horizontal pipeline in an interval and are connected to the horizontal pipeline, and the connecting pipeline is further connected to the vertical pipeline in an interval.

6. The aging test device for display modules according to claim 5, characterized in that the connecting pipelines are located in the same plane, and the plane is parallel to the third side wall of the housing.

7. The aging test device for display modules according to claim 1, characterized in that The aging test device further comprises an air blower, a plurality of temperature sensors and a controller, the air blower is connected to the air inlet pipe and the controller and communicates with the air inlet pipe, the temperature sensors are connected to the controller and correspond to the inner side wall of the shell connected to the carrier or the air inlet pipe respectively, for detecting the ambient temperature near the carrier and sending a feedback signal to the controller based on the ambient temperature, so that the controller controls the air blower to fill the hot air into the air inlet pipe or stop filling the hot air according to the feedback signal.

8. The aging test device of the display module according to claim 7, wherein, The aging test device further comprises a return pipe, one end of the return pipe is connected to the air blower, and the other end of the return pipe passes through the first exhaust hole and the second exhaust hole to communicate the inside and outside of the shell.

9. The aging test device of the display module according to claim 8, wherein, One end of the return pipe is further provided with a first electromagnetic valve, the first electromagnetic valve is connected to the controller, so that when the controller determines that the temperature in the accommodation cavity exceeds a first set threshold value according to the feedback signal, the first electromagnetic valve is triggered to open to guide the hot air in the accommodation cavity into the air blower.

10. The aging test device of the display module according to claim 7, wherein, The aging test device further comprises a first air outlet pipe and a second air outlet pipe, the first air outlet pipe passes through the first exhaust hole and protrudes out of the first side wall towards the outside of the shell; The second air outlet pipe passes through the second exhaust hole and protrudes out of the second side wall towards the outside of the shell.

11. The aging test device of the display module according to claim 10, wherein, The first air outlet pipe and / or the second air outlet pipe are further provided with a second electromagnetic valve, the second electromagnetic valve is connected to the controller to receive a second control signal sent by the controller and adjust the opening degree of the second electromagnetic valve under the action of the second control signal.

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