Screen detection device

Abstract

The utility model provides a screen detection device. The screen detection device comprises a shell, a pressure applying assembly, an optical filter and a transparent visible part, the shell is provided with a mounting cavity, and an opening is formed in one end of the mounting cavity; the pressure applying assembly is connected to the shell, part of the structure of the pressure applying assembly is located in the mounting cavity, the weight of the pressure applying assembly is adjustable, and the end, located at the opening, of the shell is flush with the end, located at the opening, of the pressure applying assembly; the optical filter and the visible part are embedded in the shell side wall of the shell. According to the screen detection device, the to-be-detected screen can be efficiently detected, and the detection result is relatively accurate.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of screen detection, in particular to a screen detection device. BACKGROUND

[0002] Generally, in the manufacturing process of liquid crystal screens, the liquid crystal screens need to be subjected to certain pressure resistance test to detect whether the liquid crystal screens will have light leakage phenomenon.

[0003] In the related art, a push-pull force meter is generally used to apply pressure to the screen, specifically, the push-pull force meter needs to be manually adjusted to slowly operate and adjust the stroke of the pressure head to control the pressure size, and to be kept at the test position for a certain time. Moreover, if it is needed to determine whether light leakage occurs, a filter needs to be held to check the light leakage condition.

[0004] However, the above detection method has low efficiency, and when determining whether light leakage occurs, the operation is complicated and the accuracy of the detection result is poor. CONTENT OF THE INVENTION

[0005] The embodiment of the present application provides a screen detection device, which has high detection efficiency and accurate detection result.

[0006] The present application provides a screen detection device, which comprises a shell, a pressure applying assembly, a filter and a transparent visual part, the shell has a mounting cavity, one end of the mounting cavity is formed as an open end; the pressure applying assembly is connected to the shell, and part of the structure of the pressure applying assembly is located in the mounting cavity, the weight of the pressure applying assembly is adjustable, the end of the shell located at the open end is flush with the end of the pressure applying assembly located at the open end; the filter and the visual part are embedded on the shell side wall.

[0007] As an optional implementation, the pressure applying assembly comprises a pressure applying module and an elastic pad, both of which are arranged in the mounting cavity; in the height direction of the screen detection device, the pressure applying module has a first end face arranged towards the open end and a second end face arranged away from the open end; the elastic pad is connected to the first end face.

[0008] As an optional implementation, the pressure applying module comprises a first pressure applying part and a second pressure applying part, the first pressure applying part is connected to the shell side wall; in the height direction of the screen detection device: one end of the first pressure applying part arranged towards the open end forms the first end face, and the other end of the first pressure applying part arranged away from the open end forms a third end face; one end of the second pressure applying part arranged towards the open end forms a fourth end face, and the other end of the second pressure applying part arranged away from the open end forms the second end face, and the fourth end face abuts against the third end face.

[0009] As an optional implementation, the first pressing member comprises, in sequence from the direction away from the opening to the direction close to the opening, a first pressure receiving part, a second pressure receiving part, a transition part and a connecting part; an end of the first pressure receiving part away from the opening forms the third end surface, the second pressure receiving part is connected with the shell side wall of the shell; the radial dimension of the transition part gradually decreases in the direction from the second pressure receiving part to the connecting part, and an end of the connecting part facing the opening forms the first end surface.

[0010] As an optional implementation, the pressing assembly further comprises two connecting members arranged on opposite sides of the second pressure receiving part; the connecting member comprises a connecting rod and a limiting plate, one end of the connecting rod is connected with the second pressure receiving part, and the other end of the connecting rod passes through a connecting hole in the shell side wall of the shell and is connected with the limiting plate; wherein the radial dimension of the limiting plate is greater than the radial dimension of the connecting rod, and the limiting plate is stopped outside the shell side wall.

[0011] As an optional implementation, in the height direction of the screen detection device, there is a gap between the end of the connecting rod close to the opening and the hole wall of the connecting hole.

[0012] As an optional implementation, the second pressing member is a standard weight.

[0013] As an optional implementation, the elastic pad is a rubber pad.

[0014] As an optional implementation, the elastic pad has a connecting surface connected with the first end surface, and the orthographic projection area of the first end surface on the connecting surface falls within the connecting surface.

[0015] As an optional implementation, an end of the shell away from the opening is provided with an operation handle.

[0016] As an optional implementation, the shell comprises a shell body and an end cover, the shell body is formed with the opening, and the end of the shell body at the opening is flush with the end of the pressing assembly at the opening, and the filter and the visual part are embedded on the shell side wall of the shell body; the end cover is arranged opposite to the opening, and the end cover is detachably connected with the shell body to form an installation cavity together with the shell body.

[0017] The screen detection device provided in the application comprises a shell and a pressing assembly connected together, the pressing assembly is used for pressing the to-be-detected screen, and the shell is embedded with a filter and a transparent visual part.

[0018] Therefore, when the screen detection device provided in the embodiment is used to detect the to-be-detected screen;

[0019] In one aspect, when pressure is applied to the screen under test, only the weight of the pressure applying assembly needs to be consistent with the pressure value that the screen can withstand. Compared with the related art, the pressure head stroke is adjusted slowly by manually adjusting the push-pull force gauge to control the pressure size and keep it for a certain period of time. Such a pressure applying manner does not require manual participation, saves labor, and improves test efficiency.

[0020] Moreover, by setting the visual part and the filter, when it is necessary to determine whether light leakage occurs and whether the screen under test is qualified, only the visual part and the filter need to be aligned with the test area. The visual part provides a direct observation angle without a filter, which is convenient for observing whether light leakage occurs. The filter can check the degree of light leakage to determine whether the screen under test is qualified. Compared with the related art, such a light leakage checking manner is more convenient, and the detection result is more accurate. BRIEF DESCRIPTION OF DRAWINGS

[0021] Figure 1 A structure schematic diagram of a screen detection device provided by an embodiment of the present application;

[0022] Figure 2 A cross-sectional view of a use state of a screen detection device provided by an embodiment of the present application;

[0023] Figure 3 A use state view of a screen detection device provided by an embodiment of the present application along a direction A; Figure 2 A use state view of a screen detection device provided by an embodiment of the present application along a direction B.

[0024] Figure 4 A use state view of a screen detection device provided by an embodiment of the present application along a direction B. Figure 2 A use state view of a screen detection device provided by an embodiment of the present application along a direction B.

[0025] BRIEF DESCRIPTION OF DRAWINGS

[0026] 1, shell; 2, pressure applying assembly; 3, filter; 4, visual part;

[0027] 10, screen detection device; 11, mounting cavity; 12, shell body; 13, end cover; 14, operation handle; 21, pressure applying module; 22, elastic pad; 23, connecting piece; 20, screen under test;

[0028] 111, opening; 121, connecting hole; 141, support rod; 142, operation part; 211, first end face; 212, second end face; 213, first pressure applying piece; 214, second pressure applying piece; 221, connecting face; 231, connecting rod; 232, limiting plate; 201, pressure receiving face;

[0029] 2131 , third end face; 2132 , first pressure-bearing portion; 2133 , second pressure-bearing portion; 2134 , transition portion; 2135 , connecting portion; 2141 , fourth end face. DETAILED DESCRIPTION

[0030] The following will clearly and thoroughly describe the technical solutions in this application in conjunction with the accompanying drawings. In the description of the embodiments of this application, unless otherwise specified, " / " means or, for example, A / B can mean A or B: "and / or" in the text is only a description of the association relationship of associated objects, indicating that there can be three relationships, for example, A and / or B can mean: A exists alone, A and B exist at the same time, and B exists alone. In addition, in the description of the embodiments of this application, "multiple" means two or more than two.

[0031] In the following, the terms "first" and "second" are used for descriptive purposes only and should not be understood to imply or suggest relative importance or implicitly indicate the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include one or more of the features.

[0032] Screen light leakage refers to light leakage around the edges or in certain areas of the screen when displaying black or a dark background, resulting in darker black areas. Furthermore, light leakage can negatively impact the display quality, viewing experience, product reputation, and product lifespan.

[0033] Therefore, in the display industry, light leakage testing is required during the manufacturing of display screens. Since the structural integrity and optical performance of a screen may change when subjected to external pressure, a pressure test can reveal whether the screen itself is leaking light.

[0034] In related technologies, a force gauge is commonly used to apply pressure to the screen. Specifically, the force gauge must be manually adjusted to control the pressure by slowly adjusting the indenter stroke, and the pressure must be held in the test position for a certain period of time. Furthermore, if light leakage is to be determined, a handheld filter is required to check for leakage.

[0035] However, the above-mentioned detection method, on the one hand, requires adjustment of the pressure head formation, which will reduce the efficiency of the entire detection process. On the other hand, when determining whether there is light leakage, a person needs to hold the filter, which is not only cumbersome to operate, but also the accuracy of the test results will be affected by the way and position of the person holding the filter.

[0036] Based on this, the embodiment of the present application provides a screen detection device. Compared with the light leakage detection method using a push-pull dynamometer in the related art, on the one hand, the detection efficiency can be improved, and on the other hand, the detection method of light leakage can be simplified, and the detection result is more accurate.

[0037] The embodiment of the present application will be described in detail below with reference to the drawings and specific embodiments.

[0038] Please refer to Figures 1 to 4 , Figure 1 for the structure diagram of the screen detection device provided by the embodiment of the present application. Figure 2 for the cross-sectional view of the use state of the screen detection device provided by the embodiment of the present application. Figure 3 for the use state diagram of the screen detection device provided by the embodiment of the present application along the A direction in FIG. Figure 2 for the use state diagram of the screen detection device provided by the embodiment of the present application along the B direction in FIG. Figure 4 for the use state diagram of the screen detection device provided by the embodiment of the present application along the B direction in FIG. Figure 2 for the use state diagram of the screen detection device provided by the embodiment of the present application along the B direction in FIG.

[0039] As shown in FIG. Figure 2 , the embodiment provides a screen detection device 10, which comprises a shell 1, a pressure applying assembly 2, a filter 3 and a transparent visual part 4. The filter 3 and the visual part 4 are embedded on the shell side wall of the shell 1.

[0040] Among them, the shell 1 has a mounting cavity 11, one end of the mounting cavity 11 is formed as an opening 111. Specifically, referring to the direction in FIG. Figure 2 , the opening 111 is formed at the bottom end of the mounting cavity 11.

[0041] And the pressure applying assembly 2 is connected to the shell 1, and part of the structure of the pressure applying assembly 2 is located in the mounting cavity 11, and the weight of the pressure applying assembly 2 is adjustable. The end of the shell 1 at the opening 111 is flush with the end of the pressure applying assembly 2 at the opening 111. In this way, the appearance effect of the screen detection device 10 provided by the embodiment is better.

[0042] Specifically, when the screen detection device 10 provided by the embodiment is used to perform pressure resistance detection on a to-be-detected screen 20, the to-be-detected screen 20 has a pressure receiving surface 201 forming a display area of the to-be-detected screen 20, i.e. a light emitting area, and the opening 111 is arranged towards the pressure receiving surface 201. The bottom end of the shell 1 and the bottom end of the pressure applying assembly 2 are both pressed on the pressure receiving surface 201, and the orthographic projection area of the shell 1 on the pressure receiving surface 201 falls within the pressure receiving surface 201.

[0043] It should be noted that the above-mentioned limitation of the orthographic projection area of the shell 1 on the pressure surface 201 is also set to improve the accuracy of the detection result of the to-be-detected screen 20, and specifically, it can be understood that the to-be-detected area of the to-be-detected screen 20, that is, the pressure area, needs to be kept in a relatively closed space to observe and judge the light leakage phenomenon of the to-be-detected area.

[0044] Therefore, when the screen detection device 10 provided in the embodiment is used to detect the to-be-detected screen 20, on the one hand, when pressure is applied to the to-be-detected screen 20, only the weight of the pressure applying assembly 2 needs to be consistent with the pressure value that the to-be-detected screen 20 can withstand. Compared with the related art, the size of the pressure is controlled by manually adjusting the push-pull force gauge to slowly operate and adjust the stroke of the pressure head, and the pressure is maintained for a certain period of time. In this way, the pressure applying mode does not require manual participation, thereby saving labor and improving test efficiency.

[0045] On the other hand, by arranging the visual part 4 and the optical filter 3, when it is necessary to judge whether light leakage occurs and whether the to-be-detected screen 20 is qualified, the visual part 4 and the optical filter 3 are aligned with the to-be-detected area, respectively. The visual part 4 provides a direct observation angle without a filter, which is convenient for observing whether light leakage occurs, and the optical filter 3 can check the degree of light leakage to judge whether the to-be-detected screen 20 is qualified.

[0046] Therefore, compared with the related art, the light leakage checking mode is more convenient, and the detection result is more accurate.

[0047] Further, the optical filter 3 can be an ND5 optical filter. The ND5 optical filter is a neutral density optical filter with a density of 1.5, which is equivalent to reducing the exposure amount by about 5 stops of light aperture. The ND5 optical filter can uniformly reduce light of all wavelengths without changing the color or color temperature of the light.

[0048] The visual part 4 can be transparent glass or transparent plastic, and the material of the visual part 4 is not limited here.

[0049] In some optional embodiments, in order to apply pressure to the to-be-detected screen 20 by the pressure applying assembly 2 while avoiding damage to the to-be-detected screen 20, the pressure applying assembly 2 includes a pressure applying module 21 and an elastic pad 22, and the pressure applying module 21 and the elastic pad 22 are arranged in the mounting cavity 11.

[0050] In the height direction of the screen detection device 10 provided in the embodiment, the pressure applying module 21 has a first end surface 211 arranged close to the opening 111 and a second end surface 212 arranged away from the opening 111; the elastic pad 22 is connected to the first end surface 211, and in the use process of the screen detection device 10, the elastic pad 22 is pressed against the pressure surface 201.

[0051] Therefore, by arranging the elastic pad 22, when the pressing assembly 2 applies pressure to the to-be-tested screen 20, the pressure distribution can be uniform, and the damage of the to-be-tested screen 20 caused by local stress concentration can be reduced. In addition, the arrangement of the elastic pad 22 can improve the stability of the pressing assembly 2 applying pressure to the to-be-tested screen 20, so that the pressing effect in the actual use scenario can be simulated more accurately.

[0052] The height direction of the screen detection device 10 is consistent with the z-z axis direction in the z-z coordinate system, that is, the up-down direction in the z-z coordinate system. Figures 2 to 4 Figures 2 to 4 The height direction of the screen detection device 10 is consistent with the z-z axis direction in the z-z coordinate system, that is, the up-down direction in the z-z coordinate system.

[0053] In some specific embodiments, the pressing module 21 includes a first pressing piece 213 and a second pressing piece 214. The first pressing piece 213 is connected to the shell side wall of the shell 1. In the height direction of the screen detection device 10: one end of the first pressing piece 213 arranged to face the opening 111 forms a first end face 211, and the other end of the first pressing piece 213 arranged to face away from the opening 111 forms a third end face 2131; one end of the second pressing piece 214 arranged to face the opening 111 forms a fourth end face 2141, and the other end of the second pressing piece 214 arranged to face away from the opening 111 forms a second end face 212, and the fourth end face 2141 abuts against the third end face 2131.

[0054] It can be understood that in the actual use scenario, the size of the pressure applied to the to-be-tested screen 20 will definitely change. Therefore, in the present embodiment, the weight of the pressing assembly 2 is adjustable.

[0055] As known from the above, the second pressing piece 214 is not connected to the shell 1. Therefore, the second pressing piece 214 is replaceable, that is, the weight of the second pressing piece 214 is adjustable. The overall weight of the pressing assembly 2 can be adjusted by replacing the second pressing piece 214.

[0056] In some specific embodiments, the first pressing piece 213 is a standard weight.

[0057] The standard weight is an object with a known and stable mass, which is used to calibrate and verify the accuracy of a weighing instrument, a balance, and other measuring devices.

[0058] Generally, the standard weight is divided into E1 grade weight: the mass is greater than or equal to 1 milligram and less than or equal to 20 kilograms;

[0059] E2 grade weight: the mass is greater than or equal to 1 milligram and less than or equal to 20 kilograms;

[0060] F1 grade weight: the mass is greater than or equal to 1 gram and less than or equal to 50 kilograms;

[0061] ​F2 class weight: mass greater than or equal to 1 gram and less than or equal to 50 kilograms;

[0062] M1 class weight: mass greater than or equal to 1 gram and less than or equal to 50 kilograms;

[0063] M2 class weight: mass greater than or equal to 1 gram and less than or equal to 50 kilograms.

[0064] Among them, the E1 class weight has higher accuracy than the E2 class weight.

[0065] In order to be able to replace the second pressure applying piece 214, in some specific embodiments, the shell 1 comprises a shell body 12 and an end cover 13. The shell body 12 is formed with an opening 111, and the end of the shell body 12 located at the opening 111 is flush with the end of the elastic pad 22 located at the opening 111, and the filter 3 and the visual piece 4 are embedded on the shell side wall of the shell body 12. The end cover 13 is arranged opposite to the opening 111, and the end cover 13 is detachably connected with the shell body 12 to form the mounting cavity 11 together with the shell body 12.

[0066] In this way, by arranging the detachably connected end cover 13 and the shell body 12, the end cover 13 can be removed during use to replace the second pressure applying piece 214, so as to adjust the weight of the second pressure applying piece 214, and further adjust the overall weight of the pressure applying assembly 2.

[0067] Specifically, when the screen detection device 10 provided by the embodiment is used, the bottom end of the shell body 12 and the bottom end of the elastic pad 22 are both pressed on the pressure receiving surface 201.

[0068] It should be noted that the end cover 13 and the shell body 12 can be connected together by thread connection, or can be connected by clamping connection. Herein, the connection mode between the end cover 13 and the shell body 12 is not specifically limited.

[0069] For the first pressure applying piece 213, it can be understood as a special-shaped weight.

[0070] Specifically, in the direction from far away from the to-be-detected screen 20 to close to the to-be-detected screen 20, the first pressure applying piece 213 comprises a first pressure receiving part 2132, a second pressure receiving part 2133, a transition part 2134 and a connecting part 2135 connected in sequence. The end of the first pressure receiving part 2132 away from the to-be-detected screen 20 forms a third end face 2131, and the second pressure receiving part 2133 is connected with the shell side wall of the shell body 12. The radial dimension of the transition part 2134 gradually decreases in the direction from the second pressure receiving part 2133 to the connecting part 2135, and the end of the connecting part 2135 close to the to-be-detected screen 20 forms a first end face 211.

[0071] The first pressure receiving part 2132, the second pressure receiving part 2133 and the connecting part 2135 are all in a cylindrical shape, and the transition part 2134 is in a conical shape. The diameter of the first pressure receiving part 2132 is smaller than the diameter of the second pressure receiving part 2133, the diameter of the connecting part 2135 is smaller than the diameter of the first pressure receiving part 2132, the maximum diameter of the transition part 2134 is equal to the diameter of the second pressure receiving part 2133, and the minimum diameter of the transition part 2134 is equal to the diameter of the connecting part 2135. The first pressure receiving part 2132, the second pressure receiving part 2133, the transition part 2134 and the connecting part 2135 are coaxially arranged, and the axial dimension of the second pressure receiving part 2133 is the largest, followed by the transition part 2134, the first pressure receiving part 2132 and the connecting part 2135.

[0072] Of course, in some other embodiments, the first pressure applying part 213 can also have other shapes, and the specific shape of the first pressure applying part 213 is not limited herein.

[0073] In the present embodiment, the elastic pad 22 is also in a cylindrical shape. The diameter of the elastic pad 22 is greater than the diameter of the connecting part 2135 and smaller than the diameter of the first pressure receiving part 2132.

[0074] Specifically, the diameter of the elastic pad 22 can be 10 cm.

[0075] That is, the elastic pad 22 has a connecting surface 221 connected with the first end surface 211, and the normal projection area of the first end surface 211 on the connecting surface 221 falls within the connecting surface 221.

[0076] In this way, the contact area between the elastic pad 22 and the to-be-tested screen 20 is greater than the connecting area between the elastic pad 22 and the connecting part 2135. In this way, the uniformity of the pressure on the to-be-tested screen 20 can be further improved, and the detection accuracy of the to-be-tested screen 20 can be improved while avoiding damage to the to-be-tested screen 20.

[0077] Further, the thickness direction of the elastic pad 22 is consistent with the axial direction of the first pressure applying part 213.

[0078] In the specific implementation of the present embodiment, the thickness of the elastic pad 22 is greater than the axial dimension of the connecting part 2135. In this way, the buffering performance and support formation of the elastic pad 22 itself can be improved. The shape and size of the elastic pad 22 are not limited herein.

[0079] The material of the elastic pad 22 can be made of rubber, that is, the elastic pad 22 can be a rubber pad. The material of the elastic pad 22 is not limited herein, and any elastic material can achieve the purpose of the present embodiment.

[0080] In order to connect the second pressure receiving part 2133 and the shell body 12 together, the pressing assembly 2 further comprises two connecting pieces 23, which are arranged on opposite sides of the second pressure receiving part 2133.

[0081] In this way, the second pressure receiving part 2133 and the shell body 12 can be connected together, that is, the first pressing piece 213 and the shell 1 can be connected together.

[0082] Specifically, the connecting piece 23 comprises a connecting rod 231 and a limiting plate 232, one end of the connecting rod 231 is connected with the second pressure receiving part 2133, and the other end of the connecting rod 231 passes through the connecting hole 121 on the shell side wall of the shell body 12 and is connected with the limiting plate 232.

[0083] The radial dimension of the limiting plate 232 is greater than the radial dimension of the connecting rod 231, and the limiting plate 232 is stopped outside the shell side wall of the shell 1.

[0084] In this way, the second pressure receiving part 2133 and the shell body 12 can be connected together, that is, the first pressing piece 213 and the shell 1 can be connected together.

[0085] The connecting mode between the connecting rod 231 and the second pressure receiving part 2133 can also be threaded connection, that is, a threaded hole is formed on the side of the second pressure receiving part 2133, and the connecting rod 231 is inserted into the threaded hole and connected with the second pressure receiving part 2133 together.

[0086] That is, in the assembly process, the first pressing piece 213 can be placed in the mounting cavity 11 first, and the threaded hole and the connecting hole 121 are aligned in position, and then the second pressure receiving part 2133 and the shell body 12 are connected together through the cooperation of the connecting rod 231 and the threaded hole.

[0087] It should be noted that the connecting rod 231 is a cylindrical rod, the limiting plate 232 is a circular plate, and the connecting hole 121 is a circular hole. Here, the shape of the connecting piece 23 is not specifically limited.

[0088] It can be understood that if the bottom end of the connecting rod 231 completely abuts the hole wall of the connecting hole 121, the weight of the first pressing piece 213 will be lost, so that the deviation between the pressure value received by the to-be-tested screen 20 and the preset pressure value is larger, which will affect the detection result.

[0089] Therefore, in the specific embodiment of the present embodiment, in the height direction of the screen detection device 10, there is a gap between the end of the connecting rod 231 close to the opening 111 and the hole wall of the connecting hole 121.

[0090] Therefore, the bottom end of the connecting rod 231 can be prevented from completely abutting against the hole wall of the connecting hole 121, so that the weight loss of the first pressing member 213 can be avoided, and the detection accuracy of the screen detection device 10 can be improved.

[0091] It should be noted that the gap between the end of the connecting rod 231 close to the opening 111 and the hole wall of the connecting hole 121 is achieved because the elastic pad 22 has a certain supporting performance on the first pressing member 213, so that the gap between the bottom end of the connecting rod 231 and the hole wall of the connecting hole 121 can be achieved.

[0092] Further, in the screen detection device 10, during the use of the screen detection device 10, due to the gravity of the first pressing member 213 and the pressure of the second pressing member 214 on the first pressing member 213, there is also a certain gap between the top end of the connecting rod 231 and the hole wall of the connecting hole 121. The gap value is greater than the gap value between the bottom end of the connecting rod 231 and the hole wall of the connecting hole 121.

[0093] Of course, when observing and judging the light leakage of the to-be-detected area of the to-be-detected screen 20, the observation angle needs to be adjusted, that is, the positions of the light filter 3 and the visual part 4 need to be adjusted. Therefore, in order to facilitate the position adjustment, the shell 1 needs to be rotated.

[0094] Therefore, in the specific embodiment, the end of the end cover 13 away from the opening 111 is provided with an operation handle 14.

[0095] Therefore, by providing the operation handle 14, the shell 1 can be rotated by holding and operating the operation handle 14. During the rotation of the shell 1, the first pressing member 213 also rotates synchronously.

[0096] Specifically, the operation handle 14 includes a supporting rod 141 and an operation part 142. One end of the supporting rod 141 is connected to the middle part of the end cover 13, and the axial direction of the supporting rod 141 is consistent with the height direction of the screen detection device 10. The operation part 142 is connected to one end of the end cover 13 away from the supporting rod 141. The extension direction of the operation part 142 is perpendicular to the extension direction of the supporting rod 141, and the supporting rod 141 is connected to the middle part of the operation part 142.

[0097] Therefore, during the rotation of the shell 1, the stability of the rotation of the shell 1 and the first pressing member 213 can be ensured, so that the light leakage of the to-be-detected area of the to-be-detected screen 20 can be observed and judged.

[0098] In order to improve the operation feeling of the operation handle 14 and increase the friction between the hand and the operation handle 14, a rubber sleeve or a silica gel sleeve can be sleeved on the operation handle 14.

[0099] In this way, the shell 1 is convenient to rotate. In this embodiment, the specific shape of the rubber sleeve or the silica gel sleeve is not limited.

[0100] For example, in some specific embodiments, the total mass of the pressing assembly 2, i.e., the first pressing member 213, the second pressing member 214, the elastic pad 22 and the two connecting members 23, can be 1 kg. Of course, in other embodiments, the pressing assembly 2 with a suitable weight can be selected according to the characteristics of the to-be-tested screen 20.

[0101] When the screen detection device 10 provided by the present embodiment is used:

[0102] Firstly, the operator places the screen detection device 10 on the to-be-tested screen 20 stably by operating the operation handle 14; at this time, the bottom end of the shell body 12 and the bottom end of the elastic pad 22 are closely attached to the to-be-tested screen 20, and the to-be-tested screen 20 is stably pressed by the elastic pad 22 under the gravity of the first pressing member 213 and the second pressing member 214, so as to simulate the pressing effect in the actual use scenario.

[0103] Then, the operator can rotate the shell 1 by operating the operation handle 14 to adjust the observation angle, so that the filter 3 or the visual member 4 is aligned with the to-be-tested area; the visual member 4 provides a direct observation angle without filter, which is convenient for observing whether the pressing light leakage occurs; the filter 3 is used to test the light leakage severity, and when the light leakage occurs, the shell 1 is rotated by operating the operation handle 14 to switch the observation to judge whether the light leakage is qualified.

[0104] During the measurement process, the operator can adjust the positions of the filter 3 and the visual member 4 at any time according to the needs, so as to obtain the light leakage performance of the to-be-tested screen 20 when the to-be-tested screen 20 is pressed; by adjusting the number or weight of the second pressing member 214, the pressing force applied to the to-be-tested screen 20 can also be changed, so as to simulate the performance of the to-be-tested screen 20 in different use scenarios.

[0105] It should be noted that when the filter 3 blocks the light leakage and cannot be seen, it is judged that the to-be-tested screen 20 is a qualified product.

[0106] The above is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto, and any person skilled in the art can easily think of changes or replacements within the technical range disclosed in the present application, which should be covered in the protection scope of the present application. Therefore, the protection scope of the present application should be subject to the protection scope of the claims.

Claims

1. A screen detection apparatus, characterized by comprising: The screen detection device comprises: a housing having a mounting cavity, one end of the mounting cavity being formed as an opening; a pressure applying assembly connected to the housing, part of the structure of the pressure applying assembly being located in the mounting cavity, the weight of the pressure applying assembly being adjustable, the end of the housing located at the opening being flush with the end of the pressure applying assembly located at the opening; and a filter and a transparent visual element embedded on the shell side wall of the housing.

2. The screen detection apparatus according to claim 1, characterized by The pressure applying assembly comprises a pressure applying module and an elastic pad, both of which are arranged in the mounting cavity; in the height direction of the screen detection device, the pressure applying module has a first end face arranged to face the opening and a second end face arranged to face away from the opening, and the elastic pad is connected to the first end face.

3. The screen detection apparatus according to claim 2, characterized by The pressure applying module comprises a first pressure applying element and a second pressure applying element, the first pressure applying element being connected to the shell side wall of the housing; in the height direction of the screen detection device: one end of the first pressure applying element arranged to face the opening forms the first end face, and the other end of the first pressure applying element arranged to face away from the opening forms a third end face; one end of the second pressure applying element arranged to face the opening forms a fourth end face, and the other end of the second pressure applying element arranged to face away from the opening forms the second end face, and the fourth end face abuts against the third end face.

4. The screen detection apparatus according to claim 3, characterized by In the direction from far away from the opening to close to the opening, the first pressure applying element comprises a first pressure receiving part, a second pressure receiving part, a transition part and a connecting part connected in sequence; one end of the first pressure receiving part arranged to face away from the opening forms the third end face, and the second pressure receiving part is connected to the shell side wall of the housing; the radial dimension of the transition part gradually decreases in the direction from the second pressure receiving part to the connecting part, and one end of the connecting part arranged to face the opening forms the first end face.

5. The screen detection apparatus according to claim 4, characterized by The pressure applying assembly further comprises two connecting elements arranged on opposite sides of the second pressure receiving part; the connecting element comprises a connecting rod and a limiting plate, one end of the connecting rod is connected to the second pressure receiving part, and the other end of the connecting rod passes through a connecting hole in the shell side wall of the housing and is connected to the limiting plate; wherein the radial dimension of the limiting plate is greater than the radial dimension of the connecting rod, and the limiting plate is stopped on the outside of the shell side wall of the housing.

6. The screen detection apparatus according to claim 5, characterized by In the height direction of the screen detection device, there is a gap between one end of the connecting rod close to the opening and the hole wall of the connecting hole.

7. The screen detection apparatus according to any one of claims 3 to 6, characterized by The second pressure applying element is a standard weight.

8. The screen detection apparatus according to any one of claims 2 to 6, characterized by The elastic pad is a rubber pad; and / or the elastic pad has a connecting face connected to the first end face, and the orthographic projection area of the first end face on the connecting face falls within the connecting face.

9. The screen detection apparatus according to any one of claims 1 to 6, characterized by One end of the housing away from the opening is provided with an operating handle.

10. The screen detection apparatus according to any one of claims 1 to 6, characterized by The housing comprises a housing body and an end cover, the housing body is formed with the opening, the end of the housing body located at the opening is flush with the end of the pressure applying assembly located at the opening, and the filter and the visual element are embedded on the shell side wall of the housing body. The end cover is arranged opposite to the open end, and the end cover is detachably connected with the shell body to form the mounting cavity together with the shell body.

Images