CN115598451A - Aging testing device of display module - Google Patents

Abstract

The application provides a display module assembly's aging testing device, wherein, this aging testing device includes: the shell is internally provided with an accommodating cavity and comprises a first side wall and a second side wall which are oppositely arranged; the first side wall and the second side wall are respectively provided with a first exhaust hole and a second exhaust hole; the air inlet pipeline is communicated with the inside and the 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 air outlet holes and a plurality of second air outlet holes, the first air outlet holes face the first exhaust holes, and the second air outlet holes face the second exhaust holes; and the carrying platforms are arranged in the shell and are used for carrying the display module. The utility model provides an aging testing device can realize that each position keeps good temperature homogeneity to can effectively avoid the problem that local super temperature and local temperature are not up to standard to bring.

Description

Aging testing device of display module

Technical Field

The application relates to the technical field of mechanical equipment, in particular to an aging test device of a display module.

Background

At present, in the production stage of display modules, in order to ensure the excellent performance of products leaving factories, the display modules are usually required to be subjected to an aging test, and the aging test is usually performed at a certain temperature, generally at 50 ℃ and 580 ℃, so as to activate the reliability of the modules and display defects.

However, in the conventional method, an aging oven is usually adopted to meet the temperature condition in the aging test of the display module, the aging oven generally uses a heating and blowing structure, an air inlet is arranged on one side of the bottom of the oven, and air outlets on two sides are directly discharged to a special exhaust pipeline or reflows to a heating and blowing unit, so that hot air flows disorderly in the oven and cannot be uniformly distributed to various positions in the oven, vortex air flow is locally formed even, and the temperature difference of various positions in the oven is aggravated, for example, the common aging temperature is 60 ℃, and the difference between the highest temperature and the lowest temperature in the oven can reach 10 ℃; the platform structure of the loading module blocks the hot air from flowing in the vertical direction, so that the temperature difference between the bottom layer and the top layer in the furnace is obviously increased; the heating unit stops running in advance under the influence of the real-time monitoring of the highest temperature in the furnace in the temperature rising process, and the lower temperature position cannot reach the set process temperature.

However, when the temperature in the furnace of the aging oven for performing the aging test on the display module is uneven, the position of the aging oven close to the hot air inlet is easy to generate local overtemperature, other defects are caused to the display module, a small amount of good products are lost if the temperature is low, and a large amount of waste is caused if the temperature is high; if the local temperature does not reach the standard, that is, the local temperature does not reach the set process temperature, and generally occurs at a position far away from a hot air inlet, the aging test fails, and the reliability shows that poor detection is missed to a subsequent process, even to a client, so that the quality image of a company is seriously damaged.

Disclosure of Invention

The application provides an aging testing device of display module assembly to solve current ageing oven when carrying out aging testing to display module assembly, the oven temperature is inhomogeneous inevitably appearing usually, so that there is the local overtemperature damage module assembly product of ageing oven, and there is the problem that local temperature is ageing testing inefficacy not up to standard simultaneously.

For solving the technical problem, the present application provides an aging testing apparatus for a display module, wherein the aging testing apparatus comprises: the shell is internally provided with an accommodating cavity and comprises a first side wall and a second side wall which are oppositely arranged; the first side wall and the second side wall are respectively provided with a first exhaust hole and a second exhaust hole; the air inlet pipeline is communicated with the inside and the 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 air outlet holes and a plurality of second air outlet holes, the first air outlet holes face the first exhaust holes, and the second air outlet holes face the second exhaust holes; and the carrying platforms are arranged in the shell and are used for carrying the display module.

Wherein, the inlet duct still is equipped with the air inlet including the horizontal pipeline and the vertical pipeline that are linked together on the first lateral wall, and the horizontal pipeline passes the air inlet to inside and outside the intercommunication casing is provided with a plurality of first ventholes and a plurality of second venthole on the vertical pipeline.

Wherein, a plurality of microscope carriers are connected on the inside wall of casing or vertical pipeline to be arranged in the relative both sides of vertical pipeline at matrix interval.

Wherein, in the direction that horizontal pipeline was kept away from to vertical pipeline, the distance between two adjacent first ventholes reduces gradually, and the distance between two adjacent second ventholes reduces gradually.

In the direction that the vertical pipeline is far away from the transverse pipeline, the aperture of the first air outlet holes is gradually increased, and the aperture of the second air outlet holes is gradually increased; preferably, the distance between the centers of circles of every two adjacent first air outlet holes is equal, and the distance between the centers of circles of every two adjacent second air outlet holes is equal.

The air inlet pipeline also comprises at least two connecting pipelines, the at least two connecting pipelines are connected to the transverse pipeline at intervals and communicated with the transverse pipeline, at least two vertical pipelines are correspondingly connected to the connecting pipelines at intervals, and the connecting pipelines are communicated with the vertical pipelines; preferably, the connecting ducts are located in the same plane, which is parallel to the third side wall of the housing.

The aging test device further comprises a blast box, a plurality of temperature sensors and a controller, the blast box is connected with the air inlet pipeline and the controller and is communicated with the air inlet pipeline, the temperature sensors are connected with the controller and respectively correspond to the inner side wall of the carrier connecting shell or the air inlet pipeline for detecting the ambient temperature near the carrier, and a feedback signal is sent to the controller based on the ambient temperature, so that the controller controls the blast box to fill hot air into the air inlet pipeline or stops filling the hot air according to the feedback signal.

The aging test device also comprises a return pipe, wherein one end of the return pipe is connected with the blast box, and the other end of the return pipe penetrates through the first exhaust hole and the second exhaust hole to communicate the inside and the outside of the shell; preferably, one end of the return line is further provided with a first electromagnetic valve, and the first electromagnetic valve is connected with the controller so as to trigger the first electromagnetic valve to open when the controller determines that the temperature in the accommodating cavity exceeds a first set threshold value according to the feedback signal, so that hot air in the accommodating cavity is guided into the blower box.

The aging test device also comprises a first air outlet pipeline and a second air outlet pipeline, wherein the first air outlet pipeline penetrates through the first exhaust hole and protrudes out of the first side wall towards the outside of the shell; the second air outlet pipeline penetrates through the second air outlet hole and protrudes out of the second side wall towards the outside of the shell.

And the first air outlet pipeline and/or the second air outlet pipeline are/is also provided with a second electromagnetic valve, and the second electromagnetic valve is connected with the controller so as to receive a second control signal sent by the controller and adjust the opening of the second electromagnetic valve under the action of the second control signal.

The beneficial effect of this application is: be different from prior art, the inside holding chamber that is formed with of casing among the aging testing device that this application provided, and still be equipped with first exhaust hole and second exhaust hole on relative first lateral wall and the second lateral wall that sets up on the casing respectively, inlet line intercommunication casing is inside and outside, and be used for introducing the casing with the outside gas of casing in, and inlet line still includes a plurality of first ventholes and a plurality of second venthole, this first venthole orientation first exhaust hole, the second venthole orientation second exhaust hole, a plurality of microscope decks set up in the casing, and be used for bearing display module, when filling into steam in inlet line, this steam can enter into the casing by first venthole and second venthole, and by first exhaust hole and second exhaust hole discharge casing inside holding chamber, in order can directly supply steam to holding intracavity each position. And because first venthole and first exhaust hole direction are unanimous, and second venthole and second exhaust hole direction are unanimous, this steam is outside the flow direction of holding intracavity with the level, and can not produce vortex air current to can effectively avoid local temperature uncontrolled, thereby effectively realize the synchronous intensification of each position of holding intracavity, and guarantee the uniformity of temperature.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings based on these drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an embodiment of an aging testing apparatus for a display module according to the present application.

Detailed Description

The present application will be described in further detail with reference to the following drawings and examples. It is to be noted that the following examples are only illustrative of the present application, and do not limit the scope of the present application. Likewise, the following examples are only some examples and not all examples of the present application, and all other examples obtained by a person of ordinary skill in the art without any inventive step are within the scope of the present application.

The terms "first", "second" and "third" in this application are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implying any indication of the number of technical features indicated. Thus, a feature defined as "first," "second," or "third" may explicitly or implicitly include at least one of the feature. In the description of the present application, "a plurality" means at least two, e.g., two, three, etc., unless explicitly specifically limited otherwise. In the embodiment of the present application, all directional indicators (such as up, down, left, right, front, and rear' \8230;) are used only to explain the relative positional relationship between the components, the motion situation, and the like in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.

Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.

Referring to fig. 1, fig. 1 is a schematic structural diagram of an embodiment of an aging test apparatus for a display module according to the present application. In the present embodiment, the burn-in test apparatus 10 includes: a housing 11, an intake duct 12, and a plurality of stages 13.

Wherein, an aging testing device 10 that provides in this application specifically can be used to holding display module assembly to heat display module assembly, for example, place a plurality of display module assemblies respectively on a plurality of microscope decks 13, and fill into steam in 11 inside holding chambeies of casing to among the aging testing device 10, heat a plurality of display module assemblies in order to heat in step, and then accomplish corresponding aging testing. Of course, in other embodiments, the burn-in apparatus 10 may also be used for burn-in testing of any other reasonable electronic device or material, and the present embodiment is not limited thereto.

It should be noted that the aging test refers to making the device under test operate in an extraordinary special environment or making the device under test operate in an extraordinary special environment, and as long as the performance of the device under test is stable under these conditions, the device under test operates normally in a normal environment, and the stability of the product is tested in a way of testing the function of the device.

Specifically, the housing 11 of the aging testing device 10 is hollow and forms an accommodating cavity, and the housing 11 further includes a first sidewall 111 and a second sidewall 112 disposed opposite to each other, the first sidewall 111 is further provided with a first vent hole (not shown), and the second sidewall 112 opposite to the first sidewall 111 is further provided with a second vent hole (not shown).

Further, the air intake duct 12 of the weathering test apparatus 10 communicates with the inside and the outside of the housing 11, respectively, for introducing the gas outside the housing 11 into the housing 11.

Wherein, this inlet duct 12 still includes a plurality of first ventholes (not marked in the figure) and a plurality of second ventholes (not marked in the figure), and this first venthole specifically is towards first exhaust hole, and unanimous with the direction of first exhaust hole, and this second venthole is then towards the second exhaust hole, and unanimous with the direction of second exhaust hole.

Further, a plurality of carrier 13 are correspondingly disposed in the housing 11 for carrying the display module, so that when the air inlet duct 12 is filled with hot air, the hot air can enter the accommodating cavity inside the housing 11 through the first air outlet and the second air outlet, and then is discharged from the accommodating cavity through the first air outlet and the second air outlet.

According to the scheme, the partial air inlet pipeline 12 is arranged in the shell 11, and the first air outlet hole and the plurality of second air outlet holes are formed in the partial air inlet pipeline 12, so that hot air filled into the air inlet pipeline 12 can be directly supplied to each position in the accommodating cavity of the shell 11, and the temperature uniformity of each position in the accommodating cavity of the shell 11 can be ensured in the temperature rising stage; and each position in the accommodating cavity of the shell 11 can be synchronously heated to synchronously reach the process set temperature, and the frequent opening and closing of the corresponding heating unit when the temperature in the accommodating cavity of the shell 11 is close to the process set temperature can be effectively eliminated.

And because first venthole and first exhaust hole direction are unanimous, and second venthole and second exhaust hole direction are unanimous, this steam will be outside the level in the flow direction of holding intracavity, and can not produce vortex air current to effectively avoid blockking by microscope carrier 13, thereby can effectively avoid local temperature uncontrolled, and reduce calorific loss, with the synchronous intensification of each position in the inside holding chamber of effective realization casing 11, and guarantee the uniformity of temperature.

In an embodiment, the air inlet duct 12 further includes a transverse duct 121 and a vertical duct 122, which are communicated with each other, and an air inlet (not shown) is further disposed on the first side wall 111 of the housing 11, and the transverse duct 121 specifically passes through the air inlet to communicate the inside and the outside of the housing 11, and specifically, the vertical duct 122 is correspondingly provided with a plurality of first air outlet holes and a plurality of second air outlet holes.

Optionally, the air inlet is specifically disposed on the first side wall 111 of the housing 11 at a position close to the edge, or at any other reasonable position, which is not limited in this application.

In an embodiment, the number of the vertical pipes 122 in the air inlet pipe 12 is at least two, and at least two vertical pipes 122 are spaced from each other, connected to the transverse pipe 121 at a predetermined angle, and correspondingly communicated with the transverse pipe 121.

Alternatively, the set angle may be any reasonable angle such as 80 °,90 ° or 110 °, and is preferably 90 °, which is not limited in the present application.

In an embodiment, the transverse duct 121 correspondingly passes through the 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, so as to communicate with a heating unit capable of providing hot air outside the housing 11 and guide the hot air correspondingly provided by the heating unit into the accommodating cavity inside the housing 11. The third sidewall 113 of the housing 11 is perpendicular to the first sidewall 111.

Further, the vertical pipe 122 is specifically connected to the transverse pipe 121 at one end thereof, and connected to the fourth side wall 114 of the housing 11 at the other end thereof, so as to fixedly support the vertical pipe 122. The fourth side wall 114 of the housing 11 is specifically a side wall opposite to the third side wall 113 thereof.

In an embodiment, the plurality of stages 13 in the burn-in test apparatus 10 are specifically connected to an inner side wall of the housing 11 or the vertical pipe 122, and are correspondingly arranged on two opposite sides of the vertical pipe 122 at a matrix interval.

In one embodiment, the number of the first exhaust holes on the first sidewall 111 of the housing 11 is at least two, and the at least two first exhaust holes are spaced from each other and located on the same straight line to form a row of first exhaust hole groups correspondingly; the number of the second exhaust holes on the second sidewall 112 of the housing 11 is also at least two, and the at least two second exhaust holes are spaced from each other and located on the same straight line to form a row of second exhaust hole groups correspondingly; the at least two second exhaust holes are specifically in one-to-one correspondence with the at least two first exhaust holes, and at least two carrying platforms 13 are correspondingly arranged on a connecting line between each pair of first exhaust holes and second exhaust holes at intervals so as to be capable of correspondingly carrying at least two display modules on the same level, namely a row of display modules.

In another embodiment, the degradation testing device 10 further includes at least two connecting pipes (not shown), and the at least two connecting pipes are connected to the transverse pipe 121 of the air inlet pipe 12 at intervals and are communicated with the transverse pipe 121; the connecting pipeline is also correspondingly connected with at least two vertical pipelines 122 at intervals, and the connecting pipeline is correspondingly communicated with the vertical pipelines 122.

Preferably, the at least two connecting ducts are located in the same plane, and the plane is parallel to the third side wall 113 of the housing 11.

Optionally, a carrying platform 13 for carrying the display module is vertically connected to two opposite sides of the vertical pipe 122.

Wherein, the first exhaust hole crowd on the first side wall 111 of casing 11 is specific can also be including multiseriate, and multiseriate first exhaust hole crowd separates each other, and each first exhaust hole crowd of row all corresponds and is equipped with one row of vertical pipeline 122 to can effectively increase the quantity of the synchronous holding display module assembly of this aging testing device 10, thereby effectively promote the efficiency of carrying out aging testing to display module assembly.

In one embodiment, in a direction in which the vertical duct 122 is far away from the air inlet duct 12, a distance between every two adjacent first air outlet holes gradually decreases, and a distance between every two adjacent second air outlet holes gradually decreases.

It can be understood that when the hot air enters the vertical duct 122 from the transverse duct 121 of the air inlet duct 12, the farther away from the transverse duct 121, the corresponding air pressure reduction and the loss of circulation heat are also greater, and the density of the first air outlet holes and the second air outlet holes is gradually increased to gradually increase the hot air supply amount of the first air outlet holes and the second air outlet holes at the positions of the vertical duct 122 away from the air inlet duct 12, so that the air pressure reduction and the loss of circulation heat can be effectively compensated, and different hot air flows can be supplied to each position in the accommodating cavity of the housing 11, thereby ensuring the uniformity of the temperature at each position.

In another embodiment, in the direction in which the vertical pipes 122 are far away from the air inlet pipe 12, the apertures of the first air outlets are gradually increased, and the apertures of the second air outlets are gradually increased, so as to gradually increase the hot air supply amount of the first air outlets and the second air outlets, at the positions where each vertical pipe 122 is far away from the air inlet pipe 12, thereby effectively compensating the air pressure reduction and the loss of circulation heat, so as to supply hot air with different flow rates to each position in the accommodating cavity of the housing 11, and ensuring the uniformity of the temperature at each position.

Preferably, in the direction in which the vertical duct 122 is far away from the air intake duct 12, the apertures of the plurality of first air outlets are gradually increased, and when the apertures of the plurality of second air outlets are gradually increased, the distance between the centers of each two adjacent first air outlets may be specifically equal to or gradually decreased, and the distance between the centers of each two adjacent second air outlets may be specifically equal to or gradually decreased, which is not limited in this application.

In one embodiment, the degradation testing apparatus 10 further includes a blower box (not shown), a plurality of temperature sensors 15, and a controller (not shown), and the blower box is specifically connected to the air intake duct 12 and the controller, and is in communication with the air intake duct 12. The temperature sensor 15 is connected to the controller correspondingly, and is connected to the inner side wall of the housing 11 correspondingly to the carrier 13, or the air inlet duct 12 correspondingly, so as to detect the ambient temperature near the carrier 13 in the accommodating cavity of the housing 11, and send a feedback signal to the controller based on the ambient temperature, so that the controller controls the blower box to fill hot air into the air inlet duct 12 according to the feedback signal, or stops filling hot air into the air inlet duct 12.

In an embodiment, the burn-in test apparatus 10 further includes a return pipe (not shown), one end of the return pipe is correspondingly connected to the blower box, and the other end of the return pipe correspondingly passes through the first exhaust hole and the second exhaust hole to communicate the inside and the outside of the housing 11, so that the hot air in the accommodating cavity inside the housing 11 can be reintroduced into the blower box, and the blower box can cyclically charge the hot air into the air inlet pipe 12, thereby effectively avoiding excessive loss in the burn-in test.

Preferably, a first electromagnetic valve (not shown) is further disposed at one end of the return duct, and the first electromagnetic valve is correspondingly connected to the controller, so that when the controller determines that the temperature in the accommodating cavity of the housing 11 exceeds a first set threshold value according to a feedback signal correspondingly sent by the temperature sensor 15, the first electromagnetic valve can be triggered to open to introduce the hot air in the accommodating cavity into the blower box.

In an embodiment, an opening is further provided on the return duct, and an electromagnetic valve is further provided on the opening, and the electromagnetic valve is correspondingly connected to the controller, so that when the controller determines that the temperature in the accommodating cavity of the housing 11 is lower than a first set threshold value according to a feedback signal correspondingly sent by the temperature sensor 15, the electromagnetic valve can be triggered to open, and the first electromagnetic valve is synchronously triggered to close, so that the hot air in the accommodating cavity of the housing 11 is directly exhausted to the exhaust system of the factory.

Optionally, the first set threshold may be specifically one of 45 ℃ to 65 ℃, which is not limited in this application.

In an embodiment, the aging test device 10 further includes an alarm device (not shown) connected to the controller, so as to send a first control signal to the alarm device to trigger the alarm device to emit an audible and visual alarm when the controller determines that the temperature in the accommodating cavity of the housing 11 is lower than a second set threshold according to a feedback signal correspondingly sent by the temperature sensor 15.

The second set threshold value can be the lowest process temperature of the display module for aging testing, and when the alarm device gives an audible and visual alarm, the temperature of hot air filled into the accommodating cavity of the shell 11 by a tester can be reminded of failing to reach the standard, and faults need to be checked and heating is supplemented.

In an embodiment, the degradation testing apparatus 10 further includes a first air outlet pipe 161 and a second air outlet pipe 162, the first air outlet pipe 161 correspondingly penetrates through the first air outlet hole on the first side wall 111 of the housing 11, and protrudes from the first side wall 111 towards the outside of the housing 11.

The second air outlet pipe 162 is correspondingly inserted into the second air outlet hole on the second side wall 112 of the housing 11, and protrudes toward the outside of the housing 11 to form the second side wall 111, so as to guide the hot air in the accommodating cavity inside the housing 11, and facilitate the communication between the return pipe and the accommodating cavity inside the housing 11 through the first air outlet pipe 161 and the second air outlet pipe 162.

Further, in an embodiment, the first air outlet pipeline 161 and/or the second air outlet pipeline 162 are correspondingly provided with a second electromagnetic valve (not shown), and the second electromagnetic valve is correspondingly connected to the controller, so as to receive a second control signal sent by the controller, and adjust the opening of the second electromagnetic valve under the action of the second control signal, so as to fill hot air into the accommodating cavity of the housing 11, and when the aging test is performed on the display module, the second electromagnetic valve can be closed, so as to avoid heat loss, and when the test is finished, the second electromagnetic valve is opened, so as to perform air exhaust.

It should be noted that the opening of the valve is expressed as a percentage, and the butterfly valve is normally fully closed at an angle of 0 degree and fully open at an angle of 90 degrees.

The beneficial effect of this application is: be different from prior art, the inside holding chamber that is formed with of casing among the aging testing device that this application provided, and still be equipped with first exhaust hole and second exhaust hole on relative first lateral wall and the second lateral wall that sets up on the casing respectively, inlet line intercommunication casing is inside and outside, and be used for introducing the casing with the outside gas of casing in, and inlet line still includes a plurality of first ventholes and a plurality of second venthole, this first venthole orientation first exhaust hole, the second venthole orientation second exhaust hole, a plurality of microscope decks set up in the casing, and be used for bearing display module, when filling into steam in inlet line, this steam can enter into the casing by first venthole and second venthole, and by first exhaust hole and second exhaust hole discharge casing inside holding chamber, in order can directly supply steam to holding intracavity each position. And because first venthole and first exhaust hole direction are unanimous, and second venthole and second exhaust hole direction are unanimous, this steam is outside the flow direction of holding intracavity with the level, and can not produce vortex air current to can effectively avoid local temperature uncontrolled, thereby effectively realize the synchronous intensification of each position of holding intracavity, and guarantee the uniformity of temperature.

The above description is only a part of the embodiments of the present application, and not intended to limit the scope of the present application, and all equivalent devices or equivalent processes performed by the content of the present application and the attached drawings, or directly or indirectly applied to other related technical fields, are also included in the scope of the present application.

Claims (10)

1. The utility model provides an aging testing device of display module assembly which characterized in that, aging testing device includes:

the device comprises a shell, a first fixing piece and a second fixing piece, wherein an accommodating cavity is formed inside the shell, and the shell comprises a first side wall and a second side wall which are arranged oppositely; the first side wall and the second side wall are respectively provided with a first exhaust hole and a second exhaust hole;

the air inlet pipeline is communicated with the inside and the 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 air outlet holes and a plurality of second air outlet holes, the first air outlet holes face the first exhaust holes, and the second air outlet holes face the second exhaust holes;

and the carrying platforms are arranged in the shell and are used for carrying the display module.

2. The burn-in test apparatus for a display module according to claim 1,

the air inlet pipeline comprises a transverse pipeline and a vertical pipeline which are communicated, an air inlet is further formed in the first side wall, the transverse pipeline penetrates through the air inlet to be communicated with the inside and the outside of the shell, and the vertical pipeline is provided with a plurality of first air outlet holes and a plurality of second air outlet holes.

3. The burn-in test apparatus for a display module according to claim 2,

the plurality of carrying platforms are connected to the inner side wall of the shell or the vertical pipeline and are arranged on two opposite sides of the vertical pipeline at intervals in a matrix.

4. The burn-in test apparatus for a display module according to claim 2,

in the direction that the vertical pipeline is far away from the transverse pipeline, the distance between every two adjacent first air outlet holes is gradually reduced, and the distance between every two adjacent second air outlet holes is gradually reduced.

5. The burn-in test apparatus for a display module according to claim 2,

in the direction that the vertical pipeline is far away from the transverse pipeline, the aperture of the first air outlet holes is gradually increased, and the aperture of the second air outlet holes is gradually increased;

preferably, the distance between the centers of circles of every two adjacent first air outlet holes is equal, and the distance between the centers of circles of every two adjacent second air outlet holes is equal.

6. The burn-in test apparatus for a display module according to claim 2,

the air inlet pipeline also comprises at least two connecting pipelines, the at least two connecting pipelines are connected to the transverse pipelines at intervals and communicated with the transverse pipelines, the at least two vertical pipelines are correspondingly connected to the connecting pipelines at intervals, and the connecting pipelines are communicated with the vertical pipelines;

preferably, the connecting pipes are located in the same plane, which is parallel to the third side wall of the housing.

7. The burn-in test apparatus for a display module according to claim 1,

the aging test device further comprises a blast box, a plurality of temperature sensors and a controller, wherein the blast box is connected with the air inlet pipeline and the controller and is communicated with the air inlet pipeline, the temperature sensors are connected with the controller and are respectively connected with the inner side wall of the shell corresponding to the carrying platform or the air inlet pipeline so as to be used for detecting the ambient temperature near the carrying platform and sending a feedback signal to the controller based on the ambient temperature, so that the controller controls the blast box to fill the hot gas into the air inlet pipeline according to the feedback signal or stops filling the hot gas.

8. The burn-in test apparatus for a display module according to claim 7,

the aging test device further comprises a return pipe, one end of the return pipe is connected with the blast box, and the other end of the return pipe penetrates through the first exhaust hole and the second exhaust hole to communicate the inside and the outside of the shell;

preferably, one end of the return line is further provided with a first electromagnetic valve, and the first electromagnetic valve is connected with the controller, so that when the controller determines that the temperature in the accommodating cavity exceeds a first set threshold value according to the feedback signal, the first electromagnetic valve is triggered to open, and the hot air in the accommodating cavity is guided into the blower box.

9. The burn-in test apparatus for a display module according to claim 7,

the aging test device also comprises a first air outlet pipeline and a second air outlet pipeline, wherein the first air outlet pipeline penetrates through the first exhaust hole and protrudes out of the first side wall towards the outside of the shell;

the second air outlet pipeline penetrates through the second air exhaust hole and protrudes out of the shell towards the second side wall.

10. The burn-in test apparatus for a display module according to claim 9,

and the first air outlet pipeline and/or the second air outlet pipeline are/is also provided with a second electromagnetic valve, and the second electromagnetic valve is connected with the controller to receive a second control signal sent by the controller and adjust the opening of the second electromagnetic valve under the action of the second control signal.

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