A test device

Abstract

The application provides a testing device, comprising: a fixed support, which is fixed with an image acquisition device; and a switching device, which is connected to the fixed support and is located on the side of the acquisition direction of the image acquisition device, and is configured to switch different-angle polarizers to the side of the acquisition direction of the image acquisition device, so that the image acquisition device respectively tests a display module to be tested through the different-angle polarizers.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of display module testing, and in particular to a testing device. BACKGROUND

[0002] 3D display is a kind of display that can simulate binocular parallax to generate stereoscopic visual effect. Common 3D display includes non-flickering 3D technology, which is a kind of 3D display technology based on polarization principle. The core of the technology is to separate left and right eye display images through polarized lens, that is, to realize stereoscopic vision by using polarized light of different directions and passive glasses. This puts forward higher requirements for 3D display module or 3D display panel, which needs to accurately display left and right eye parallax pictures respectively, so that each eye of the audience can see the corresponding parallax picture to form stereoscopic vision.

[0003] Therefore, it is necessary to effectively test the crosstalk of 3D display module or 3D display panel to avoid the situation that 3D display module or 3D display panel cannot effectively form corresponding parallax pictures. SUMMARY

[0004] Therefore, the present application aims to provide a testing device which overcomes the above problems or at least partially solves the above problems.

[0005] To achieve the above purpose, the present application provides a testing device, which comprises:

[0006] A fixed carrier is provided with an image acquisition device;

[0007] A switching device is connected to the fixed carrier and is located on the side of the acquisition direction of the image acquisition device. The switching device is configured to switch different angle polarized lenses to the side of the acquisition direction of the image acquisition device, so that the image acquisition device tests the display module to be tested through the different angle polarized lenses respectively.

[0008] Optionally, the fixed carrier comprises a first carrier extending along the acquisition direction. The first carrier comprises a first cavity, and the side away from the switching device is provided with a first opening with the same size as the cross-sectional shape of the first cavity along the acquisition direction. The side of the first cavity towards the switching device is provided with a second opening, and the size of the second opening is smaller than that of the first opening.

[0009] The image acquisition device comprises an acquisition head and an acquisition body, and the profile of the acquisition head is matched with the first opening.

[0010] Optionally, the fixed platform further comprises a second platform extending along the collection direction, the second platform is arranged at a side of the second opening facing the collection direction, the second platform comprises a second cavity, a cross-sectional shape and size of the second cavity along the collection direction are same as a size of the first opening, and a profile of the second cavity is adapted to a profile of the collection head.

[0011] Optionally, the switching device comprises a first platform and a second platform arranged in parallel along the collection direction and a rotating disc, a third cavity is formed between the first platform and the second platform, and a center of the rotating disc is rotationally connected in the third cavity.

[0012] A plurality of first openings penetrating the rotating disc are arranged around the center of the rotating disc, different angle polarizers are respectively arranged in the first openings, and a distance between the center of the rotating disc and the second cavity is equal to a distance between the center of the rotating disc and the first opening.

[0013] A second opening penetrating the first platform and the second platform is arranged at a side of the second cavity away from the first cavity, an edge of the second opening is sealingly connected to a side of the second cavity away from the first cavity, a size of the second opening is same as a size of the second opening, and a size of the first opening is not less than a size of the second opening.

[0014] Optionally, a side wall of the first opening away from the second cavity is provided with a boss facing the center of the opening, a profile of the polarizer is adapted to a profile of the first opening, and an edge of the polarizer is in abutment with the boss.

[0015] The polarizer is provided with a cover in abutment with the polarizer at a side away from the boss, a profile of the cover is adapted to a profile of the first opening, and a profile of the cover facing a side of the first opening is not greater than a profile of the boss facing a side of the first opening.

[0016] Optionally, a first magnetic block is arranged at a side of the edge of the second opening facing the center of the rotating disc, and a second magnetic block is arranged at the center of the rotating disc.

[0017] Optionally, first observation windows penetrating the first platform and the second platform are arranged at opposite sides of the second opening, second observation windows penetrating the rotating disc are arranged at opposite sides of the first opening, and the first observation windows and the second observation windows overlap along the collection direction in a state where the first opening and the second opening overlap along the collection direction.

[0018] Optionally, the cover and the first opening are threadedly connected, the cover is oppositely provided with a notch groove towards the center of the first opening, and the notch groove and the second magnetic block are located on the same straight line with the center of the first opening in the state that the cover abuts against the polarizer.

[0019] Optionally, the first carrier is provided with a strip-shaped groove extending away from the collection direction on the side away from the center of the turntable and away from the second carrier, and the strip-shaped groove is provided with at least one first threaded hole.

[0020] The collection body is provided with a fixing boss, the fixing boss is provided with a second threaded hole matched with the at least one first threaded hole, and the fixing boss is matched with the profile of the strip-shaped groove.

[0021] Optionally, the second cavity is provided with a bearing, and the center of the turntable is rotationally connected with the bearing through a needle roller.

[0022] As can be seen from the above, the test device provided by the application realizes the integration of the image collection device and the switching device through the fixed carrier, the fixed carrier realizes the effective fixation of the image collection device, avoids the occurrence of dumping or the change of position during the measurement process, and improves the measurement efficiency. At the same time, the switching device sequentially switches different angle polarizers to realize the test of different display modules to be tested, avoids the pollution of the polarizer, and avoids the confusion caused by the back and forth placement of the polarizer, and improves the measurement accuracy. The integration of the image collection device and the switching device further meets the position correspondence between the polarizer and the image collection device, avoids the change of the relative position between the image collection device and the polarizer, and improves the measurement accuracy.

[0023] Specifically, the second cavity is used to realize the nested installation of the collection head, and the first cavity is further used to fix the image collection device.

[0024] Through the effective cooperation of the first carrier, the second carrier, and the first platform, the second platform, and the turntable, the accurate alignment of the image collection device and the polarizer is realized, the relative position of the image collection device and the polarizer cannot be effectively aligned, the measurement accuracy is improved. Different angle polarizers are arranged in the plurality of first openings in the turntable, which avoids the confusion caused by the back and forth placement of the polarizer, and further improves the measurement accuracy. The rotation of the turntable realizes the switching of the polarizers of different angles, avoids the back and forth taking of the polarizer, causes the pollution of the polarizer, and also improves the measurement accuracy.

[0025] A first magnetic block is provided on the side of the second opening facing the center of the turntable, and a second magnetic block is provided on the side of the first opening facing the center of the rotating shaft. When the polarizer at the corresponding angle rotates to the position of the second opening, the first and second magnetic blocks are attracted to each other, so that the first and second openings can be accurately positioned in the image acquisition direction.

[0026] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, and to make the above and other objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention are described below. Attached Figure Description

[0027] To more clearly illustrate the technical solutions in this application or related technologies, the drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the drawings described below are only embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0028] Figure 1 A schematic diagram of a GPR polarized 3D liquid crystal display screen according to one embodiment;

[0029] Figure 2 A schematic diagram of a GPR polarized 3D liquid crystal display screen according to another embodiment;

[0030] Figure 3 This is a schematic diagram of a test display module according to one embodiment;

[0031] Figure 4 This is a cross-sectional view of the test apparatus according to an embodiment of this application;

[0032] Figure 5 This is a schematic diagram showing the interaction between the test apparatus and the display module under test according to an embodiment of this application;

[0033] Figure 6 This is a schematic diagram of the explosion state of the test device according to an embodiment of this application;

[0034] Figure 7 This is a schematic diagram of the test apparatus according to an embodiment of this application. Detailed Implementation

[0035] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with specific embodiments and the accompanying drawings.

[0036] It should be noted that, unless otherwise defined, the technical or scientific terms used in the embodiments of this application should have the ordinary meaning understood by one of ordinary skill in the art to which this application pertains. The terms "first," "second," and similar terms used in the embodiments of this application do not indicate any order, quantity, or importance, but are merely used to distinguish different components. Terms such as "comprising" or "including" mean that the element or object preceding the word encompasses the elements or objects listed after the word and their equivalents, without excluding other elements or objects. Terms such as "connected" or "linked" are not limited to physical or mechanical connections, but can include electrical connections, whether direct or indirect. Terms such as "upper," "lower," "left," and "right" are only used to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0037] 3D display is a display effect that simulates binocular parallax to generate stereoscopic vision. Common 3D display technologies include flicker-free 3D, a type of 3D display technology based on the principle of polarization. Its core is to separate the images displayed to the left and right eyes using polarized lenses, that is, to use polarized light in different directions in conjunction with passive glasses to achieve stereoscopic vision. This places high demands on 3D display modules or 3D display panels, requiring them to accurately display the parallax images for the left and right eyes, so that each eye of the viewer can see the corresponding parallax image, forming stereoscopic vision.

[0038] Polarized 3D display modules or displays achieve 3D display by using a phase delayer in conjunction with polarized glasses. There are two types of polarized 3D display modules or displays: GPR (Patterned Retarder on Glass) polarized 3D display modules or displays and FPR (Patterned Retarder on Film) polarized 3D display modules or displays.

[0039] In some embodiments, Figure 1 The diagram illustrates a GPR-polarized 3D LCD screen, comprising a liquid crystal screen B and a phase retardation structure A stacked sequentially. The liquid crystal screen B includes a lower polarizer 101, a lower substrate 102, a TFT 103, an alignment layer 104, a liquid crystal layer 105, an ITO layer 106, a color filter layer 107, an upper substrate 108, and an upper polarizer 109 stacked sequentially. The phase retardation structure A includes a phase retardation structure 110 and a glass substrate 111 stacked sequentially, with the phase retarder A positioned on the upper polarizer side of the liquid crystal screen B. Light emitted from the backlight module is modulated sequentially by the lower polarizer, the liquid crystal layer, and the upper polarizer before reaching the observer's eye through the phase retardation structure. The observer views 3D images or videos by wearing polarized glasses compatible with the phase retardation structure.

[0040] In some embodiments, Figure 2 The diagram illustrates another type of GPR polarized 3D LCD screen, comprising a lower polarizer 101, a lower substrate 102, a TFT 103, an alignment layer 104, a liquid crystal layer 105, an ITO layer 106, an upper polarizer 109, a phase retardation structure 110, a color filter layer 107, and an upper substrate 108, all stacked in one layer. It is understood that, compared to the previous embodiment, the phase retardation structure is positioned between the color filter layer and the upper polarizer. The light emitted from the backlight module is also modulated sequentially by the lower polarizer, the liquid crystal layer, and the upper polarizer before reaching the observer's eye through the phase retardation structure. The observer views the 3D displayed images or videos by wearing polarized glasses compatible with the phase retardation structure.

[0041] As can be seen from the two embodiments above, regardless of the type of GPR polarized 3D display module or display screen, appropriate polarized glasses are required to achieve stereoscopic vision. However, during the manufacturing process of the GPR polarized 3D display module or display screen, if the yield rate is substandard, for example, crosstalk such as light leakage occurs in the separated left and right eye time-lapse images, it will result in the inability to effectively separate the left and right eye time-lapse images or the display effect of the separated time-lapse images will not meet expectations. For example, parts that need to display black images cannot be effectively displayed due to light leakage.

[0042] Therefore, under the above circumstances, even wearing polarized glasses cannot effectively present stereoscopic vision, which requires effective testing of the prepared GPR polarized 3D display module or display screen.

[0043] In some embodiments, reference Figure 3 As shown, to test GPR polarized 3D display modules, a polarizer is placed on the display module for measurement, followed by the image acquisition device placed on the polarizer for further measurement. During this process, for different tests, the tester frequently needs to manually handle the polarizer, leading to contamination and inconsistent relative positions between the polarizer and the image acquisition device, compromising measurement accuracy and precision. Furthermore, the image acquisition device is placed on the polarizer, relying solely on the contact surface between the device and the polarizer for stable image acquisition, without effective fixation. Due to the small contact area and poor stability, the image acquisition device is prone to tipping over, resulting in low measurement efficiency. In addition, different products or display devices require different GPR polarized 3D display modules, necessitating the use of polarizers at different angles. The inability to effectively arrange and place the polarizers can lead to confusion and incorrect measurement data.

[0044] Therefore, to effectively test GPR polarized 3D display modules while avoiding polarizer contamination and ensuring measurement accuracy, the polarizer and image acquisition device must be positioned correctly to guarantee accuracy. The image acquisition device must be effectively fixed to improve measurement efficiency. When testing different polarizers, efficient switching should be implemented to avoid confusion caused by repeated placement.

[0045] Based on this, refer to Figures 4 to 7 As shown, this application provides a testing device, including: a fixed stage 1, on which an image acquisition device 2 is fixed; and a switching device connected to the fixed stage 1 and facing the acquisition direction of the image acquisition device 2, configured to switch polarizers 31 of different angles to the acquisition direction of the image acquisition device 2, so that the image acquisition device 2 tests the display module 5 under test through the polarizers 31 of different angles respectively.

[0046] In an exemplary embodiment, the image acquisition device 2 can be a 410 optical camera, or any other optical camera.

[0047] In an exemplary embodiment, the display module 5 to be tested can be a GPR polarized 3D display module or an FPR polarized 3D display module.

[0048] In this embodiment, the image acquisition device 2 and the switching device are integrated through a fixed platform 1. The fixed platform 1 effectively fixes the image acquisition device 2, preventing it from tipping over or changing position during measurement, thus improving measurement efficiency. Simultaneously, the switching device orderly switches polarizers 31 at different angles to test different display modules 5, avoiding contamination of the polarizers 31 and preventing confusion caused by repeated placement of the polarizers 31, thereby improving measurement accuracy. Furthermore, the integration of the image acquisition device 2 and the switching device ensures the positional correspondence between the polarizers 31 and the image acquisition device 2, preventing changes in the relative position between them and further improving measurement accuracy.

[0049] It is understandable that the polarizer 31 acts as polarized glasses. If the image acquisition device 2 acquires the corresponding position of the display module 5 under test through the polarizer 31 and the display images of the left and right eyes are the same, it means that the display module 5 under test has no crosstalk. If the display is different or the display effect is poor, it proves that there is crosstalk. Even if a polarized 3D display screen is formed, the display effect of the viewer wearing polarized glasses is still poor, and there is crosstalk.

[0050] In some embodiments, reference Figures 4 to 7As shown, the fixed platform 1 includes a first platform 11 extending along the acquisition direction. The first platform 11 includes a first cavity. A first opening with a cross-sectional shape and size that is the same as that of the first cavity along the acquisition direction is provided on the side away from the switching device. A second opening is provided on the side of the first cavity facing the switching device. The second opening is smaller than the first opening. The image acquisition device 2 includes an acquisition head 22 and an acquisition body 21. The outline of the acquisition head 22 is adapted to the first opening.

[0051] In this embodiment, the image acquisition device 2's acquisition body 21 is nested within the first cavity of the first platform 11, thus fixing the image acquisition device 2. The acquisition head 22 passes through the first opening into the first cavity and is then inserted through the first opening. Since the second opening is smaller than the first opening, the acquisition body 21 is fixed within the first cavity, while the acquisition head 22 can pass through the first opening to allow the acquisition direction to face the switching device. This nested installation also allows for detachable installation of the image acquisition device 2 relative to the first platform 11, facilitating assembly during testing of the display module 5 and after testing.

[0052] It should be noted that there needs to be space between the first cavity and the switching device to accommodate the acquisition head 22, that is, there is support between the first platform 11 and the switching device. Therefore, the first platform 11 and the switching device can be connected and supported in any way, such as by connecting the edge of the first platform 11 and the switching device with connecting columns.

[0053] In some embodiments, the fixed platform 1 further includes a second platform 14 extending along the acquisition direction. The second platform 14 is disposed on the side of the second opening facing the acquisition direction. The second platform 14 includes a second cavity. The cross-sectional shape and size of the second cavity along the acquisition direction are the same as the size of the first opening, and the contour of the second cavity is adapted to the contour of the acquisition head 22.

[0054] In this embodiment, while the second platform 14 supports the first platform 11, the second cavity of the second platform 14 provides a space for the acquisition head 22.

[0055] The second cavity is used to nest and install the acquisition head 22, further securing the image acquisition device 2 in conjunction with the first cavity. Specifically, during the testing of the display module 5 under test, the image acquisition device 2 primarily acquires the displayed image of the display module 5 and determines whether crosstalk exists that could affect the stereoscopic display. During the acquisition of the displayed image of the display module 5 under test, ambient light may interfere with the acquisition. The second cavity encloses the acquisition head 22 to prevent ambient light from affecting the acquisition results during the subsequent testing process via the polarizer 31 of the switching device.

[0056] In some alternative embodiments, the side of the second cavity away from the first cavity is on the same straight line as the polarizer 31 located in the acquisition direction, and is isolated from external ambient light.

[0057] In some embodiments, reference Figures 4 to 7 As shown, the switching device includes a first platform 32 and a second platform 33 arranged parallel to each other perpendicular to the acquisition direction, and a turntable 34. A third cavity is formed between the first platform 32 and the second platform 33, and the center of the turntable 34 is rotatably connected to the third cavity. The center of the turntable 34 is provided with a plurality of first openings 35 penetrating the turntable 34. Polarizing plates 31 at different angles are respectively provided in the first openings 35, and the distance between the center of the turntable 34 and the second cavity is equal to the distance between the center of the turntable 34 and the first openings 35. On the side of the second cavity away from the first cavity, there is a second opening 15 penetrating the first platform 32 and the second platform 33. The edge of the second opening 15 is sealed to the side of the second cavity away from the first cavity. The size of the second opening 15 is the same as the size of the second opening, and the size of the first opening 35 is not less than the size of the second opening 15.

[0058] In an exemplary embodiment, the second platform 33 is disposed on the side of the first platform 32 away from the second cavity.

[0059] In an exemplary embodiment, the display module 5 to be tested is located on the side of the second platform 33 away from the first platform 32.

[0060] In an exemplary embodiment, the size of the second opening 15 is the same as the size of the first opening 35.

[0061] In this embodiment, the turntable 34 is first rotatably connected to the third cavity. The center of the turntable 34 is provided with a plurality of first openings 35 penetrating the turntable 34. Polarizers 31 at different angles are provided in the first openings 35 respectively. By rotating the turntable 34, the polarizers 31 at different angles can be switched.

[0062] The distance between the center of the turntable 34 and the second cavity is equal to the distance between the center of the turntable 34 and the first opening 35, so that during the rotation of the turntable 34, the polarizers 31 at different angles can all rotate to the acquisition direction of the image acquisition device 2, and the image acquisition device 2 and the polarizers 31 located in the acquisition direction are on a straight line, that is, below the acquisition head 22.

[0063] The second opening 15 allows the image acquisition head 22 of the image acquisition device 2 to pass through the second opening 15 and acquire the image of the display module 5 under test located below the second opening 15.

[0064] The size of the second opening 15 is the same as the size of the second opening to avoid the second opening 15 obstructing the acquisition angle of the acquisition head. The size of the first opening 35 is not less than the size of the second opening 15 to avoid the first opening 35 being too small, which would cause the polarizer 31 to be too small, making it impossible to achieve effective image acquisition of the display module 5 under test, thus reducing the test accuracy.

[0065] During the test, the second platform 33 is placed on the display module 5 to be tested, so that the second opening 15 of the second platform 33 is aligned with the test point 51. At the same time, the acquisition head 22 is directly facing the second opening 15. Meanwhile, the turntable 34 is rotated so that the polarizer 31 in the first opening 35 at the corresponding angle is rotated to the position of the second opening 15. At this time, the acquisition head 22, the second opening 15 and the polarizer 31 are on the same straight line, so as to achieve effective testing of the display module 5 to be tested.

[0066] Here, through the effective cooperation of the first stage 11, the second stage 14, the first platform 32, the second platform 33, and the turntable 34, precise alignment of the image acquisition device 2 and the polarizer 31 is achieved, avoiding misalignment between the relative positions of the image acquisition device 2 and the polarizer 31, thus improving measurement accuracy. By setting polarizers 31 at different angles in the multiple first openings 35 in the turntable 34, confusion caused by repeatedly placing the polarizers 31 back and forth is avoided, further improving measurement accuracy. The rotation of the turntable 34 allows switching between polarizers 31 at different angles, avoiding repeated handling of the polarizers 31 and preventing them from becoming dirty, thus also improving measurement accuracy.

[0067] Furthermore, the edge of the second opening 15 is sealed to the side of the second cavity away from the first cavity, that is, the second stage 14 is connected to the first platform 32, thereby achieving a seal between the second cavity and the second opening 15 and preventing external ambient light from entering and affecting the measurement results.

[0068] In addition, taking the second platform 33 located on the side of the first platform 32 away from the second cavity as an example, during the testing of the display module 5 to be tested, the second platform 33 contacts the display module 5 to be tested. The larger cross-sectional area of ​​the second platform 33 avoids the possibility of the image acquisition device 2 tipping over, thus improving the measurement accuracy and efficiency.

[0069] In some embodiments, reference Figures 4 to 7As shown, the sidewall of the first opening 35 away from the second cavity is provided with a boss 36 facing the center of the opening. The outline of the polarizer 31 is adapted to the outline of the first opening 35 and the edge of the polarizer 31 abuts against the boss 36. The side of the polarizer 31 away from the boss 36 is provided with a cover 37 that abuts against the polarizer 31. The outline of the cover 37 is adapted to the outline of the first opening 35. The outline of the cover 37 facing the center of the first opening 35 is not greater than the outline of the boss 36 facing the first opening 35.

[0070] In this embodiment, the polarizer 31 is detachably disposed in the first opening 35. The outline of the polarizer 31 is adapted to the outline of the first opening 35 so that the polarizer 31 can be placed in the first opening 35 and abut against the boss 36. Through the cooperation of the cover 37 and the boss 36, the cover 37 abuts against the side of the polarizer 31 away from the boss 36, thereby fixing the polarizer 31 and realizing the detachable installation of the polarizer 31. After all tests are completed, the polarizer 31 can be easily removed.

[0071] The outline of the cover 37 facing the center of the first opening 35 is not larger than the outline of the boss 36 facing the first opening 35. This is to prevent the outline of the cover 37 facing the center of the first opening 35 from being too small and obstructing the viewing angle of the acquisition head 22 when testing through the polarizer 31.

[0072] In an alternative embodiment, the cover 37 is nested in the first opening 35.

[0073] In some embodiments, reference Figures 4 to 7 As shown, a first magnetic block 16 is provided at the edge of the second opening 15 and on the side facing the center of the turntable 34, and a second magnetic block 17 is provided in the first opening 35 facing the center of the rotating shaft.

[0074] In this embodiment, the turntable 34 is rotated to move the polarizer 31 in the first opening 35 to the second opening 15, thus positioning the polarizer 31 in the acquisition direction of the image acquisition device 2. However, due to the rotational connection of the turntable 34, aligning the first opening 35 with the second opening 15 without a reference or positioning is difficult. Even if alignment is achieved, ensuring the polarizer 31 in the first opening 35 is in the acquisition direction of the image acquisition device 2 requires significant time, reducing testing efficiency. Furthermore, since there is more than one test point 51 for the same display module 5 under test, the turntable 34 needs to be adjusted for each test, further impacting testing efficiency. In addition, if the turntable 34 is accidentally touched during image acquisition by the image acquisition device 2, the polarizer 31 may shift, causing a change in its relative position to the image acquisition device 2, affecting test accuracy.

[0075] To improve testing efficiency and accuracy, a first magnetic block 16 is provided at the edge of the second opening 15, facing the center of the turntable 34. A second magnetic block 17 is provided at the first opening 35, facing the center of the rotating shaft. When the polarizer 31 at the corresponding angle rotates to the position of the second opening 15, the first and second magnetic blocks 16 and 17 are attracted to each other, achieving precise positioning of the first and second openings 35 in the image acquisition direction. At this time, the center of the rotating shaft, the first and second magnetic blocks 16 and 17 are on the same straight line, allowing the acquisition head 22 to effectively test the display module 5 under test through the second opening 15 and the polarizer 31 at the corresponding angle in the first opening 35, thus improving testing efficiency. At the same time, the attraction of the first and second magnetic blocks 16 and 17 prevents the rotation of the turntable 34 during the test from causing a shift in the relative position of the image acquisition device 2 and the polarizer 31, thus improving testing accuracy.

[0076] If it is necessary to switch the polarizer 31 to other angles, the switching can be completed by applying a force greater than the attraction force between the first magnetic block 16 and the second magnetic block 17.

[0077] In an exemplary embodiment, if the first opening 35 is located in the image acquisition direction, then the magnetic poles of the first magnetic block 16 at the edge of the first opening 35 and the second magnetic block 17 are opposite on the side that are close to each other.

[0078] In an exemplary embodiment, the first magnetic block 16 and the second magnetic block 17 can be magnets.

[0079] In some embodiments, reference Figures 4 to 7 As shown, on the opposite sides of the second opening 15, there are first observation windows 38 that penetrate the first platform 32 and the second platform 33. On the opposite sides of the first opening 35, there are second observation windows 39 that penetrate the turntable 34. When the first opening 35 and the second opening 15 overlap along the acquisition direction, the first observation window 38 and the second observation window 39 overlap along the acquisition direction.

[0080] In an exemplary embodiment, the first observation window 38 and the second observation window 39 are the same size.

[0081] One of the objectives of this application embodiment is to improve testing efficiency during the testing of the display module 5 under test. However, since the areas of the first platform 32 and the second platform 33 are relatively large, it is difficult to directly align the second opening 15 with the test point 51. In order to achieve alignment of the test point 51 during the testing process, a first observation window 38 penetrating the first platform 32 and the second platform 33 is provided on the opposite sides of the second opening 15, and a second observation window 39 penetrating the turntable 34 is provided on the opposite sides of the first opening 35. When the first opening 35 and the second opening 15 overlap along the acquisition direction, the first observation window 38 and the second observation window 39 overlap along the acquisition direction. The overlapping first observation window 38 and the second observation window 39 determine the corresponding position of the testing device on the display module 5 under test, so that the second opening 15 is aligned with the test point 51 of the display module 5 under test.

[0082] Regardless of the angle of the polarizer 31 used for testing, the second observation windows 39 on both sides of the first opening 35 corresponding to the polarizer 31 overlap with the first observation window 38, making it convenient to test the test point 51 using the polarizer 31 at any angle.

[0083] Furthermore, when the first observation window 38 and the second observation window 39 overlap, it can be determined that the first opening 35 and the second opening 15 overlap along the acquisition direction, that is, the polarizer 31 at the corresponding angle is located in the acquisition direction of the image acquisition device 2. If the first observation window 38 and the second observation window 39 do not overlap, it can also be determined that the relative position of the image acquisition device 2 and the polarizer 31 has shifted.

[0084] In other words, the first observation window 38 and the second observation window 39 can both observe the position of the display module 5 under test and align the second opening 15 with the test point 51, and determine whether the relative position of the image acquisition device 2 and the polarizer 31 has shifted.

[0085] In some embodiments, reference Figures 4 to 7 As shown, the cover 37 and the first opening 35 are threaded together. The cover 37 is provided with a notch 40 facing the center of the first opening 35. When the cover 37 and the polarizer 31 are in contact, the notch 40, the second magnetic block 17 and the center of the first opening 35 are on the same straight line.

[0086] In this embodiment, the polarizer 31 cannot be effectively fixed, which may reduce the testing accuracy of the display module 5 under test. However, fixing the polarizer 31 too tightly may damage it. By setting the buckle to abut against the polarizer 31, the center of the notch 40, the second magnetic block 17, and the first opening 35 are on the same straight line. During the process of fixing the polarizer 31 with the buckle 37, the travel distance between the buckle 37 and the first opening 35 is designed. The second magnetic block 17 and the notch 40 provide a reference for the buckle 37 to fix the polarizer 31, effectively fixing the polarizer 31 while avoiding damage to it.

[0087] Furthermore, the notch 40 provides convenient rotation of the cover 37, enabling the fixing and disassembly of the polarizer 31.

[0088] In some embodiments, reference Figures 4 to 7 As shown, the first platform 11 has a strip groove 18 extending in the direction away from the collection direction on the side away from the center of the turntable 34 and away from the second platform 14. The strip groove 18 has at least one first threaded hole 19. The collection body 21 has a fixed boss 23. The fixed boss 23 has a second threaded hole 24 that matches the at least one first threaded hole 19. The fixed boss 23 matches the contour of the strip groove 18.

[0089] By embedding the fixed boss 23 into the strip groove 18, and using screws through at least one first threaded hole 19 and a second threaded hole 24, the image acquisition device 2 can be further fixed. However, by simply nesting the acquisition body 21 and the acquisition head 22 in the first and second cavities, the image acquisition device 2 may also come out, thus making it impossible to effectively test the display module 5 under test and reducing the testing efficiency.

[0090] In some embodiments, reference Figures 4 to 7 As shown, a bearing 41 is provided in the second cavity, and the center of the turntable 34 is rotatably connected to the bearing 41 through a needle roller 42.

[0091] While achieving a rotating connection by utilizing the cooperation of bearing 41 and needle roller 42, the structure of the rotating shaft and needle roller 42 has a high load-bearing capacity, thus stabilizing the turntable 34, extending the life of the turntable 34, and enabling stable and effective switching of polarizers 31 at different angles.

[0092] In some embodiments, the working principle of the testing device of this application is as follows: The test point 51 of the display module 5 to be tested is determined, the display module 5 to be tested is placed horizontally on the testing platform, and the display module 5 to be tested is controlled to emit light. Then, polarizers 31 of different angles used for testing are placed into the first opening 35, and the polarizers 31 are fixed using the threaded connection between the cover 37 and the first opening 35 until the cover 37 and the polarizer 31 abut against each other. Simultaneously, the notch 40, the second magnetic block 17, and the center of the first opening 35 are on the same straight line. Next, the acquisition head 22 of the image acquisition device 2 is embedded into the second cavity through the first opening to the second opening, the acquisition body 21 is embedded into the first cavity, and the fixing boss 23 is embedded into the strip groove 18. Screws are used to fix the image acquisition device 2 to the fixed platform 1 through the first threaded hole 19 and the second threaded hole 24. The testing device is then placed on the surface of the display module 5 to be tested, with the second platform 33 in contact with the surface of the display module 5. The turntable 34 is rotated so that the polarizer 31 at the corresponding angle rotates to the acquisition direction of the image acquisition device 2. Through the cooperation of the first magnetic block 16 and the second magnetic block 17, the polarizer 31 is precisely aligned with the image acquisition device 2. At this time, the test position of the display module 5 to be tested is observed through the first observation window 38 and the second observation window 39 so that the second opening 15 is aligned with the test point 51. The acquisition head 22 of the image acquisition device 2 acquires an image of the test point 51 through the second opening 15 and the polarizer 31.

[0093] Those skilled in the art should understand that the discussion of any of the above embodiments is merely exemplary and is not intended to imply that the scope of this application (including the claims) is limited to these examples; within the framework of this application, the technical features of the above embodiments or different embodiments can also be combined, the steps can be implemented in any order, and there are many other variations of different aspects of the embodiments of this application as described above, which are not provided in the details for the sake of brevity.

[0094] Additionally, to simplify the description and discussion, and to avoid obscuring the embodiments of this application, the well-known power / ground connections to integrated circuit (IC) chips and other components may or may not be shown in the provided drawings. Furthermore, the apparatus may be shown in block diagram form to avoid obscuring the embodiments of this application, and this also takes into account the fact that the details of the implementation of these block diagram apparatuses are highly dependent on the platform on which the embodiments of this application will be implemented (i.e., these details should be fully understood by those skilled in the art). While specific details (e.g., circuits) have been set forth to describe exemplary embodiments of this application, it will be apparent to those skilled in the art that the embodiments of this application can be implemented without these specific details or with variations thereof. Therefore, these descriptions should be considered illustrative rather than restrictive.

[0095] Although this application has been described in conjunction with specific embodiments thereof, many substitutions, modifications, and variations of these embodiments will be apparent to those skilled in the art from the foregoing description. For example, other memory architectures (e.g., dynamic RAM (DRAM)) may be used with the embodiments discussed.

[0096] The embodiments of this application are intended to cover all such substitutions, modifications, and variations that fall within the broad scope of the appended claims. Therefore, any omissions, modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the embodiments of this application should be included within the protection scope of this application.

Claims

1. A testing device, characterized in that, include: A fixed platform is provided, on which an image acquisition device is fixed. The fixed platform includes a first platform extending along the acquisition direction, the first platform including a first cavity, and a first opening on the side away from the switching device, the first cavity having a cross-sectional shape and size similar to the first cavity along the acquisition direction. The first cavity has a second opening on the side facing the switching device, the second opening being smaller than the first opening. The fixed platform also includes a second platform extending along the acquisition direction, the second platform being disposed on the side of the second opening facing the acquisition direction, the second platform including a second cavity, the second cavity having a cross-sectional shape and size similar to the first opening along the acquisition direction, and the contour of the second cavity being adapted to the contour of the acquisition head. A switching device, connected to the fixed platform and facing the acquisition direction of the image acquisition device, is configured to switch polarizers of different angles to the acquisition direction of the image acquisition device, so that the image acquisition device can test the 3D display module under test through the polarizers of different angles respectively; the image acquisition device includes an acquisition head and an acquisition body, the outline of the acquisition head being adapted to the first opening; the switching device includes a first platform and a second platform arranged parallel to each other perpendicular to the acquisition direction, and a turntable, a third cavity being formed between the first platform and the second platform, the center of the turntable being rotatably connected to the third cavity; a second opening is provided on the side of the second cavity away from the first cavity, penetrating the first platform and the second platform, the edge of the second opening being sealed to the side of the second cavity away from the first cavity.

2. The testing apparatus according to claim 1, characterized in that, The center of the rotating disk is provided with a plurality of first openings penetrating the rotating disk, and polarizers of different angles are respectively provided in the first openings. The distance between the center of the rotating disk and the second cavity is equal to the distance between the center of the rotating disk and the first opening. The size of the second opening is the same as the size of the second opening, and the size of the first opening is not smaller than the size of the second opening.

3. The testing apparatus according to claim 2, characterized in that, The sidewall of the first opening away from the second cavity is provided with a boss facing the center of the first opening, the outline of the polarizer is adapted to the outline of the first opening and the edge of the polarizer abuts against the boss. The polarizer has a cover on the side away from the boss that abuts against the polarizer. The outline of the cover is adapted to the outline of the first opening. The outline of the cover facing the center of the first opening is not greater than the outline of the boss facing the first opening.

4. The testing apparatus according to claim 3, characterized in that, A first magnetic block is provided at the edge of the second opening and on the side facing the center of the turntable, and a second magnetic block is provided in the direction of the first opening facing the center of the turntable.

5. The testing apparatus according to claim 4, characterized in that, Located on opposite sides of the second opening, a first observation window is provided that penetrates the first platform and the second platform. On opposite sides of the first opening, a second observation window is provided that penetrates the turntable. When the first opening and the second opening overlap along the acquisition direction, the first observation window and the second observation window overlap along the acquisition direction.

6. The testing apparatus according to claim 4, characterized in that, The buckle cover and the first opening are threaded together. The buckle cover is provided with a notch or groove facing the center of the first opening. When the buckle cover abuts against the polarizer, the notch or groove and the second magnetic block are on the same straight line as the center of the first opening.

7. The testing apparatus according to claim 2, characterized in that, The first platform has a strip groove extending away from the collection direction on the side away from the center of the turntable and away from the second platform, and the strip groove has at least one first threaded hole; The acquisition body is provided with a fixed boss, and the fixed boss is provided with a second threaded hole that is adapted to the at least one first threaded hole. The fixed boss is adapted to the contour of the strip groove.

8. The testing apparatus according to claim 2, characterized in that, The second cavity is equipped with a bearing, and the center of the turntable is rotatably connected to the bearing via a needle roller.

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