Screen testing device

Abstract

The utility model discloses screen testing equipment, which comprises a clamping and positioning mechanism and a screen clamping mechanism, the clamping and positioning mechanism comprises a positioning mounting plate and a positioning bracket, and the positioning mounting plate is detachably connected to the positioning bracket and is suitable for being pre-mounted with a detection instrument; and the screen clamping mechanism is arranged below the clamping and positioning mechanism and is suitable for clamping the screen tested by the detection instrument. Different detection instruments and the corresponding positioning mounting plates are pre-mounted, when the detection instruments need to be replaced, only the positioning mounting plates where the detection instruments are located need to be quickly matched with the positioning support for mounting, quick disassembly and assembly of the detection instruments are achieved, and when one of the detection instruments detects a screen, the detection instruments can be quickly assembled and disassembled. Other detection instruments can synchronously perform the pre-installation process, different detection instruments can be adopted for different screens, performance indexes of different screens can be obtained in a targeted mode through the different detection instruments, and the efficiency of obtaining multiple performance indexes of the screens in unit time is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of screen testing technology, and in particular to a screen testing device. Background Technology

[0002] In related technologies, screen testing equipment is usually used in laboratories to test the performance of screens, effectively and intuitively demonstrating screen characteristics. However, laboratory equipment has the problem of limited measurement performance indicators and low efficiency in acquiring multiple screen performance indicators per unit time. Utility Model Content

[0003] This invention aims to solve at least one of the technical problems existing in the prior art. To this end, this invention proposes a screen testing device that enables rapid and efficient replacement of testing instruments by pre-installing different testing instruments and positioning mounting plates, and by quickly assembling and disassembling the positioning mounting plates and positioning brackets. This not only allows for the use of different testing instruments for different screens, but also enables the acquisition of different screen performance indicators through different testing instruments, effectively improving the efficiency of obtaining multiple screen performance indicators per unit time.

[0004] This utility model embodiment provides a screen testing device, including:

[0005] A clamping and positioning mechanism, comprising a positioning mounting plate and a positioning bracket, wherein the positioning mounting plate is detachably connected to the positioning bracket and is suitable for pre-installation with the testing instrument;

[0006] A screen clamping mechanism is located below the clamping and positioning mechanism and is suitable for clamping the screen being tested by the testing instrument.

[0007] The present invention has at least the following beneficial effects: When staff need to use different testing instruments to test the screen, by pre-installing different testing instruments with corresponding positioning mounting plates, when it is necessary to replace the testing instrument, it is only necessary to quickly install the positioning mounting plate where the testing instrument is located with the positioning bracket, thereby realizing the quick installation and removal of the testing instruments. Moreover, when one testing instrument is testing the screen, other testing instruments can be pre-installed simultaneously. Not only can different testing instruments be used for different screens, but different performance indicators of the screen can also be obtained through different testing instruments, effectively improving the efficiency of obtaining multiple performance indicators of the screen per unit time.

[0008] According to one embodiment of the present invention, the positioning bracket includes two support arms arranged opposite to each other, and a positioning notch is formed between the two support arms, the positioning notch being suitable for part of the detection instrument to pass through;

[0009] One of the support arm and the positioning mounting plate is provided with a positioning pin, and the other is provided with a positioning hole corresponding to the positioning pin;

[0010] According to one embodiment of the present invention, the support arm is magnetically connected to the positioning mounting plate.

[0011] According to one embodiment of the present invention, the screen testing device further includes a fixing frame;

[0012] The clamping and positioning mechanism further includes a first moving mechanism, which includes a first moving part and a first fixed part that can move relatively vertically. The first moving part is connected to the positioning bracket, and the first fixed part is connected to the fixed frame.

[0013] According to one embodiment of the present invention, the screen testing device further includes a side-shooting mechanism, which includes a plurality of first detection cameras arranged horizontally around the clamping and positioning mechanism, the detection field of view of the first detection cameras facing the screen clamping mechanism.

[0014] According to one embodiment of the present invention, the side-shooting mechanism includes four first detection cameras, each of which corresponds to one edge of the screen.

[0015] And / or,

[0016] The angle between the center line of the detection field of view of the first detection camera and the screen held by the screen clamping mechanism is 40 to 50 degrees.

[0017] According to one embodiment of the present invention, the screen testing equipment further includes a fixing frame, a second moving mechanism, and a second detection mechanism;

[0018] The second moving mechanism includes a second moving part and a second fixing part that move relatively horizontally. The second moving part is connected to the screen clamping mechanism, and the second fixing part is connected to the fixing frame. The area covered by the fixing frame is provided with a primary detection station and a secondary detection station. The second moving mechanism is used to drive the screen clamping mechanism to switch from the primary detection station to the secondary detection station.

[0019] The primary inspection station is the station where the inspection instrument and the first inspection camera inspect the screen; the second inspection mechanism includes a second inspection camera, and the secondary inspection station is the station where the second inspection camera inspects the screen.

[0020] According to one embodiment of the present utility model, the area covered by the fixing frame is further provided with a feeding station and a discharging station, and the discharging station, the primary inspection station, the secondary inspection station and the discharging station are arranged in sequence;

[0021] The screen testing equipment also includes a display device, which is electrically connected to the testing instrument, the first testing camera, and the second testing camera, and is adapted to display the testing information of the screen located at the discharge station.

[0022] According to one embodiment of the present invention, the screen clamping mechanism includes a screen placement plate and two vertically arranged positive and negative lead screw assemblies. The positive and negative lead screw assemblies are fixed below the screen placement plate, and the lead screw nuts of the positive and negative lead screw assemblies extend towards the screen placement plate to form clamping portions. Along the extending direction of the clamping portions, the clamping portions are at least partially higher than the screen placement plate.

[0023] According to one embodiment of the present invention, the screen clamping mechanism further includes a rotating component, which includes a rotatable rotating part and a fixed base. The rotating part is fixedly connected to the screen placement plate to drive the screen placement plate and the positive and negative lead screw assembly to rotate relative to the fixed base as a whole.

[0024] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0025] The above and / or additional aspects and advantages of this utility model will become apparent and readily understood from the description of the embodiments taken in conjunction with the following drawings, in which:

[0026] Figure 1 This is a schematic diagram of the overall assembly of the screen testing device according to an embodiment of the present invention;

[0027] Figure 2 This is a schematic diagram of the clamping and positioning mechanism of the screen testing equipment according to an embodiment of the present utility model;

[0028] Figure 3 This is a schematic diagram of the structure of the second detection mechanism of the screen testing device according to an embodiment of the present utility model;

[0029] Figure 4 This is a schematic diagram of the side-shooting mechanism of the screen testing device according to an embodiment of the present utility model;

[0030] Figure 5 This is a schematic diagram of the screen clamping mechanism of the screen testing device according to an embodiment of the present utility model;

[0031] Figure 6 for Figure 5 A magnified view of part A in the middle.

[0032] 100. Clamping and positioning mechanism; 110. Positioning mounting plate; 111. Handle; 120. Positioning bracket; 121. Bracket arm; 122. Positioning notch; 130. First moving mechanism; 131. First moving part; 132. First fixing part; 140. Magnetic component;

[0033] 200. Screen clamping mechanism; 210. Screen placement plate; 211. Support column; 220. Positive and negative lead screw assembly; 230. Clamping part; 231. Abutment block; 240. Rotating assembly; 241. Rotating part; 242. Fixing base;

[0034] 300. Side-viewing mechanism; 310. First detection camera; 320. Support base; 330. First moving slide rail;

[0035] 400. Second moving mechanism; 410. Second moving part; 420. Second fixed part;

[0036] 500. Second inspection mechanism; 510. Second inspection camera; 520. Telescopic cylinder; 530. Second moving slide rail;

[0037] 600. Electrical control cabinet; 700. Mounting frame; 800. Screen; 900. Testing instrument. Detailed Implementation

[0038] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.

[0039] In the description of this utility model, it should be understood that the directional descriptions, such as up, down, front, back, left, right, etc., indicate the directional or positional relationship based on the directional or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0040] In the description of this utility model, "several" means one or more, "multiple" means two or more, "greater than," "less than," and "exceeding" are understood to exclude the stated number, while "above," "below," and "within" are understood to include the stated number. If "first," "second," etc., are used in the description, they are only for distinguishing technical features and should not be construed as indicating or implying relative importance, or implicitly indicating the number of indicated technical features, or implicitly indicating the sequential relationship of the indicated technical features.

[0041] In the description of this utility model, unless otherwise explicitly defined, the terms "setting", "installation", "connection", etc. should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in combination with the specific content of the technical solution.

[0042] Please refer to Figure 1 and Figure 2 As shown, this embodiment discloses a screen testing device, including a clamping and positioning mechanism 100 and a screen clamping mechanism 200. The clamping and positioning mechanism 100 includes a positioning mounting plate 110 and a positioning bracket 120. The positioning mounting plate 110 is detachably connected to the positioning bracket 120 and is suitable for pre-installation with the testing instrument 900. The screen clamping mechanism 200 is located below the clamping and positioning mechanism 100 and is suitable for clamping the screen 800 being tested by the testing instrument 900.

[0043] According to the screen testing device of this utility model embodiment, when the staff has the need to test the screen 800, the screen 800 to be tested is placed in the screen clamping mechanism 200 and fixed. The screen testing device can control the testing instrument 900 fixed in the clamping and positioning mechanism 100 to test the screen 800.

[0044] Understandably, screens 800 possess various characteristics, such as color, brightness, and flicker. Different types of testing instruments 900 are required to specifically test these performance indicators, and the required performance indicators also differ between different types of screens 800. In related technologies, screen testing equipment typically only supports one type of testing instrument 900, resulting in low testing efficiency and poor adaptability to different screens 800.

[0045] The screen testing equipment of this utility model embodiment allows for the rapid installation and removal of testing instruments 900 when different testing instruments 900 are used to test the screen 800. This is achieved by pre-installing different testing instruments 900 with corresponding positioning mounting plates 110, and quickly installing the positioning mounting plate 110 containing the testing instrument 900 with the positioning bracket 120 when a replacement testing instrument 900 is needed. Furthermore, while one testing instrument 900 is testing the screen 800, other testing instruments 900 can be pre-installed simultaneously. This not only allows for the use of different testing instruments 900 for different screens 800, but also enables the acquisition of different performance indicators of the screen 800 through different testing instruments 900, effectively improving the efficiency of obtaining multiple performance indicators of the screen 800 per unit time.

[0046] In this embodiment, the testing instrument 900 can be a commercially available testing instrument 900 for testing the screen 800.

[0047] In this embodiment, "the screen clamping mechanism 200 is located below the clamping and positioning mechanism 100" can be understood as follows: the screen clamping mechanism 200 can be located directly below the clamping and positioning mechanism 100, and the detection area of ​​the detection instrument 900 fixed by the clamping and positioning mechanism 100 can cover the screen 800 for detection; or it can be in a form that can move in the space below the clamping and positioning mechanism 100, so that when the screen clamping mechanism 200 moves to the detection area of ​​the detection instrument 900, the detection instrument 900 performs detection of the screen 800.

[0048] In this embodiment, the screen testing equipment also includes an electrical control cabinet 600. The electrical control cabinet 600 transmits the current from the external power supply to the testing instrument 900 and other electrical components of the screen testing equipment to ensure the normal operation of the screen testing equipment. In addition, the staff can control the testing process of the screen testing equipment through the electrical control cabinet 600, such as controlling whether the testing instrument 900 is turned on through the start / stop switch of the electrical control cabinet 600.

[0049] According to one embodiment of the present invention, in conjunction with Figure 2 As shown, the positioning bracket 120 includes two opposing bracket arms 121, with a positioning notch 122 formed between the two bracket arms 121. The positioning notch 122 is suitable for the passage of part of the testing instrument 900. When the operator installs the pre-installed positioning mounting plate 110 and the testing instrument 900 into the positioning bracket 120, the positioning notch 122 between the bracket arms 121 limits the swing range of the positioning mounting plate 110 and the positioning bracket 120 during assembly and mating, effectively improving installation efficiency.

[0050] In this embodiment, a handle 111 is provided on the positioning mounting plate 110, which is combined with... Figure 2 As shown, a handle 111 is provided on the side of the positioning mounting plate 110 opposite to the support arm 121. The operator can easily align the positioning mounting plate 110 with the positioning notch 122 by pulling the handle 111.

[0051] In this embodiment, combined with Figure 2 As shown, one of the support arm 121 and the positioning mounting plate 110 is provided with a positioning pin, and the other is provided with a positioning hole corresponding to the positioning pin. Based on the positioning notch 122, the operator moves the positioning mounting plate 110 within the range of the positioning notch 122, so that the positioning hole on it engages with the positioning pin on the support arm 121 to complete the fine positioning. Of course, the positioning hole can also be set in the support arm 121, and the positioning pin can be set in the positioning mounting plate 110.

[0052] In one embodiment, the support arm 121 is magnetically connected to the positioning mounting plate 110. As the positioning mounting plate 110 gradually approaches the positioning bracket 120, the magnetic element 140 on the positioning mounting plate 110 attracts the magnetic element 140 on the positioning bracket 120, thereby guiding the operator to quickly complete the installation of the positioning mounting plate 110 and the positioning bracket 120. Furthermore, the magnetic force is at its maximum when the positioning mounting plate 110 and the positioning bracket 120 are in contact, ensuring that the positioning mounting plate 110 and the positioning bracket 120 will not be misaligned during the operation of the screen testing equipment, thus ensuring the accuracy of the test results.

[0053] In this embodiment, combined with Figure 2 As shown, each support arm 121 is provided with two circular magnetic elements 140. Of course, the number of magnetic elements 140 can be adjusted based on actual usage needs.

[0054] In other embodiments, the detachable connection structure between the positioning mounting plate 110 and the positioning bracket 120 can also be a snap-fit, adhesive, or the like.

[0055] According to one embodiment of the present invention, the screen testing equipment further includes a fixing frame 700; the clamping and positioning mechanism 100 further includes a first moving mechanism 130, which includes a first moving part 131 and a first fixing part 132 that can move vertically relative to each other. The first moving part 131 is connected to the positioning bracket 120, and the first fixing part 132 is connected to the fixing frame 700. Since the testing instrument 900 is relatively fixed to the first moving part 131, when the screen clamping mechanism 200 reaches the testing position (i.e., fixed relative to the fixing frame 700), the relative movement of the first moving part 131 and the first fixing part 132 realizes the relative movement of the testing instrument 900 relative to the screen 800 on the screen clamping mechanism 200, thereby adapting to different types and sizes of testing instruments 900 to complete the testing of the screen 800.

[0056] In this embodiment, the first moving part 131 and the first fixed part 132 are slidably connected by a slide rail, and a servo motor can be used to drive the first moving part 131 to ensure the moving accuracy of the first moving part 131; of course, the relative movement between the first moving part 131 and the first fixed part 132 can also be in the form of a lead screw, cylinder, screw gear, etc.

[0057] According to one embodiment of the present invention, in conjunction with Figure 1 and Figure 4As shown, the screen testing equipment also includes a side-shooting mechanism 300. The side-shooting mechanism 300 includes several first detection cameras 310 arranged horizontally around the clamping and positioning mechanism 100. The detection field of view of the first detection cameras 310 faces the screen clamping mechanism 200. That is, the clamping and positioning mechanism 100 and the first detection cameras 310 are fixed in relative position in the horizontal direction. Furthermore, the detection field of view of the first detection cameras 310 faces the screen clamping mechanism 200, so that the detection instrument 900 on the clamping mechanism and the first detection cameras 310 on the side-shooting mechanism 300 can simultaneously detect the screen 800 on the screen clamping mechanism 200 to obtain more information about the screen 800 for calculating whether the performance indicators of the screen 800 meet the standards.

[0058] In one embodiment, such as Figure 4 As shown, the side-shooting mechanism 300 includes four first detection cameras 310, each corresponding to one of the edges of the screen 800. This ensures that the detection field of view of the first detection cameras 310 can fully cover all areas of the screen 800, improving the accuracy of the performance evaluation of the screen 800.

[0059] In this embodiment, when the screen testing equipment has a mounting bracket 700, the first testing camera 310 can be fixedly mounted on the mounting bracket 700, such as... Figure 4 As shown, the mounting bracket 700 may be provided with a rectangular ring structure so that each first detection camera 310 corresponds to the edge of the screen 800; of course, based on different shapes of screens 800, the arrangement of the first detection cameras 310 can be adapted to change, such as a circular screen 800 can use several first detection cameras 310 arranged in a ring.

[0060] In one embodiment, combined Figure 4 As shown, the center line of the detection field of view of the first detection camera 310 forms an angle of 40 to 50 degrees with the screen 800 held by the screen clamping mechanism 200. It can be understood that the 40 to 50 degree tilt setting effectively ensures that the multiple first detection cameras 310 do not interfere with each other in spatial arrangement, while also avoiding obstruction of the detection instrument 900, thus effectively ensuring the acquisition effect of the relevant parameters of the performance characteristics of the screen 800.

[0061] In this embodiment, the center line of the detection field of view of the first detection camera 310 forms a 45-degree angle with the screen 800 held by the screen clamping mechanism 200. Of course, the specific angle can be adaptively adjusted according to the spatial arrangement of the various components.

[0062] In this embodiment, the first detection camera 310 can move relative to the detection instrument 900 (that is, it can move relative to the screen 800 on the screen clamping mechanism 200), specifically, as shown below. Figure 4As shown, the first detection camera 310 is slidably connected to the support base 320 via the first moving slide rail 330. The sliding direction is the same as the detection field of view of the first detection camera 310, realizing the displacement of the first detection camera 310 in the vertical and horizontal directions. It can be understood that for screens 800 of different sizes, the first detection camera 310 needs to dynamically adjust the distance with the screen clamping mechanism 200 to ensure that the detection field of view of the first detection camera 310 can fully cover the surface of the screen 800.

[0063] According to one embodiment of the present invention, in conjunction with Figure 1 , Figure 3 and Figure 5 As shown, the screen testing equipment also includes a fixed frame 700, a second moving mechanism 400, and a second testing mechanism 500. The second moving mechanism 400 includes a second moving part 410 and a second fixing part 420 that move relatively horizontally. The second moving part 410 is connected to the screen clamping mechanism 200, and the second fixing part 420 is connected to the fixed frame 700. The area covered by the fixed frame 700 is provided with a primary testing station and a secondary testing station. The second moving mechanism 400 is used to drive the screen clamping mechanism 200 to switch from the primary testing station to the secondary testing station. The primary testing station is the station where the testing instrument 900 and the first testing camera 310 test the screen 800. The second testing mechanism 500 includes a second testing camera 510, and the secondary testing station is the station where the second testing camera 510 tests the screen 800.

[0064] In this embodiment, firstly, in the primary inspection station, the surface of the screen 800 is subjected to large-area inspection by the inspection instrument 900 and the first inspection camera 310. The screen testing equipment can obtain the location of defects (such as dead pixels) in the screen 800 from the inspection results of the primary inspection station. Then, the screen 800 is moved from the primary inspection station to the secondary inspection station by the second moving mechanism 400. In the secondary inspection station, the screen testing equipment can use the second inspection camera 510 to perform fine inspection on the location of defects in the screen 800 based on the inspection results of the primary inspection station, and calculate the performance of the screen 800 under current testing by combining the inspection data of the two stations.

[0065] In this embodiment, by setting up a continuous operation of primary and secondary inspection stations, not only is the efficiency of screen 800 inspection improved, but the re-inspection at the secondary inspection station also effectively avoids the false detection that occurs when using only the primary inspection station, thus effectively improving the pass rate of the performance characteristic parameters of the screen 800 after inspection.

[0066] In this embodiment, the second moving part 410 and the second fixed part 420 are slidably connected by a slide rail, and a servo motor can be used to drive the second moving part 410 to ensure the moving accuracy of the second moving part 410; of course, the relative movement between the second moving part 410 and the second fixed part 420 can also be in the form of a lead screw, cylinder, screw gear, etc.

[0067] In this embodiment, combined with Figure 3 As shown, the second detection camera 510 is located at the moving end of the telescopic cylinder 520. The fixed end of the telescopic cylinder 520 is connected to the second moving slide rail 530. The sliding direction of the second moving slide rail 530 is perpendicular to the telescopic direction of the telescopic cylinder 520 (in this embodiment, the sliding direction of the second moving slide rail 530 is horizontal, and the telescopic direction of the telescopic cylinder 520 is vertical), so that the second detection camera 510 can move relative to the screen 800 in both horizontal and vertical directions, fully covering the location of defects on the surface of the screen 800.

[0068] According to one embodiment of this utility model, the area covered by the fixing frame 700 is also provided with a feeding station and a discharging station. The discharging station, the primary inspection station, the secondary inspection station, and the discharging station are arranged in sequence. Specifically, at the initial stage of the screen testing equipment, the screen clamping mechanism 200 is located at the feeding station. The operator places the screen 800 to be tested in the screen clamping mechanism 200 for clamping and fixing. The screen clamping mechanism 200 carries the screen 800 from the feeding station to the primary inspection station. After the primary inspection station is fully inspected by the inspection instrument 900 (or the first inspection camera 310 if there is a side-shooting mechanism 300), it continues to move to the secondary inspection station where the second inspection camera 510 performs fine inspection on the defective positions in the primary inspection station. After the inspection is completed, the screen 800 moves to the discharging station. The operator or the screen testing equipment can select the next process of the screen 800 (such as scrapping or moving it to the production line corresponding to screens 800 with different defect levels) based on the inspection results generated by the primary and secondary inspection stations.

[0069] In this embodiment, the screen testing equipment also includes a display device (not shown in the figure), which is electrically connected to the testing instrument 900, the first testing camera 310, and the second testing camera 510, and is suitable for displaying the testing information of the screen 800 located at the unloading station. Through the display device, the staff can intuitively understand the current quality of the screen 800 and accurately control the production quality of the batch of screens 800.

[0070] In this embodiment, "electrical connection" can be a form in which the display device is directly connected to the detection instrument 900, the first detection camera 310 and the second detection camera 510, or it can be an indirect connection, such as the display device being connected to the detection instrument 900, the first detection camera 310 and the second detection camera 510 through a controller. The controller can process the detection results of the detection instrument 900, the first detection camera 310 and the second detection camera 510 and then send them to the display device for display.

[0071] In this embodiment, the detection information may include information such as defects, defect locations, and quality levels of the current screen 800.

[0072] According to one embodiment of the present invention, in conjunction with Figure 1 , Figure 5 and Figure 6 As shown, the screen clamping mechanism 200 includes a screen placement plate 210 and two vertically arranged positive and negative lead screw assemblies 220. The positive and negative lead screw assemblies 220 and the screen 800 are respectively disposed on opposite sides of the screen placement plate 210. The lead screw nut of the positive and negative lead screw assembly 220 extends into the screen placement plate 210 to form a clamping part 230. Along the extending direction of the clamping part 230, the clamping part 230 is at least partially disposed above the screen placement plate 210.

[0073] In this embodiment, after the operator places the screen 800 on the screen placement plate 210, he controls the screws of the two vertically arranged positive and negative screw assemblies 220 to rotate. The clamping parts 230 corresponding to the two screw nuts of each positive and negative screw assembly 220 gradually approach the screen 800 located in the middle of the screw, and finally clamp it at the edge of the screen 800. The two vertically arranged positive and negative screw assemblies 220 complete the fixed clamping of the four sides of the screen 800.

[0074] The positive and negative lead screw assembly 220 ensures that the edges of each opposite side of the screen 800 are subjected to the same force during the gradual clamping process, thus avoiding damage to the screen 800.

[0075] In this embodiment, an abutment block 231 can also be provided between the clamping part 230 and the screen 800. The abutment block 231 buffers the pressure generated during the clamping process, and the clamping block can adaptively adjust its shape based on the different edge shapes of the screen 800 to ensure the stability of the screen clamping mechanism 200 clamping the screen 800.

[0076] In this embodiment, a support column 211 may be provided on the side of the screen placement plate 210 that contacts the screen 800. The support column 211 can effectively reduce the contact area between the screen 800 and the screen placement plate 210, and avoid wear and contamination of the screen 800 surface.

[0077] According to one embodiment of the present invention, in conjunction with Figure 1 , Figure 5 and Figure 6 As shown, the screen clamping mechanism 200 also includes a rotating assembly 240, which includes a rotating part 241 and a fixed base 242 that can rotate relative to each other. The rotating part 241 is fixedly connected to the screen placement plate 210 to drive the screen placement plate 210 and the positive and negative lead screw assembly 220 to rotate relative to the fixed base 242 as a whole.

[0078] In this embodiment, the screen placement plate 210 is rotated by the rotating component 240, enabling the screen 800 to rotate relative to the detection instrument 900, the side-shooting mechanism 300, or the second detection mechanism 500. By rotating the screen 800, the user's viewing experience at different angles can be simulated, thereby evaluating the screen 800's performance in terms of brightness, color accuracy, and contrast under different viewing angles. Furthermore, changes in color and brightness can be observed during the rotation of the screen 800. If the screen 800 exhibits significant color deviation or uneven brightness after rotation, it may indicate a problem with the screen 800's manufacturing process or materials. This test helps to identify potential defects in the screen 800's production process; during the production of the screen 800, there may be minor defects such as bright spots, dark spots, and lines. These defects may be difficult to detect when the screen 800 is stationary, but may become more apparent during rotation. By rotating the screen 800, these defects can be more easily detected, thereby ensuring the quality of the screen 800.

[0079] In this embodiment, the rotating part 241 may be connected to a servo motor to achieve precise positioning and angle rotation of the screen 800.

[0080] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A screen testing device for adapting to various types of testing instruments (900), characterized in that, include: The clamping and positioning mechanism (100) includes a positioning mounting plate (110) and a positioning bracket (120). The positioning mounting plate (110) is detachably connected to the positioning bracket (120) and is suitable for pre-installation with the testing instrument (900). A screen clamping mechanism (200) is located below the clamping and positioning mechanism (100) and is suitable for clamping the screen (800) being tested by the testing instrument (900).

2. The screen testing device according to claim 1, characterized in that, The positioning bracket (120) includes two support arms (121) arranged opposite to each other, and a positioning notch (122) is formed between the two support arms (121), the positioning notch (122) being suitable for part of the detection instrument (900) to pass through; One of the support arm (121) and the positioning mounting plate (110) is provided with a positioning pin, and the other is provided with a positioning hole corresponding to the positioning pin.

3. The screen testing device according to claim 2, characterized in that, The support arm (121) is magnetically connected to the positioning mounting plate (110).

4. The screen testing device according to any one of claims 1 to 3, characterized in that, The screen testing equipment also includes a mounting bracket (700). The clamping and positioning mechanism (100) further includes a first moving mechanism (130), which includes a first moving part (131) and a first fixing part (132) that can move relatively vertically. The first moving part (131) is connected to the positioning bracket (120), and the first fixing part (132) is connected to the fixing frame (700).

5. The screen testing device according to any one of claims 1 to 3, characterized in that, The screen testing device also includes a side-shooting mechanism (300), which includes a plurality of first detection cameras (310) arranged horizontally around the clamping and positioning mechanism (100), with the detection field of view of the first detection cameras (310) facing the screen clamping mechanism (200).

6. The screen testing device according to claim 5, characterized in that, The side-shooting mechanism (300) includes four first detection cameras (310), each of which corresponds to a border line of the screen (800). And / or, The angle between the center line of the detection field of view of the first detection camera (310) and the screen (800) held by the screen clamping mechanism (200) is 40 to 50 degrees.

7. The screen testing device according to claim 5, characterized in that, The screen testing equipment also includes a mounting bracket (700), a second moving mechanism (400), and a second testing mechanism (500). The second moving mechanism (400) includes a second moving part (410) and a second fixing part (420) that move relatively horizontally. The second moving part (410) is connected to the screen clamping mechanism (200), and the second fixing part (420) is connected to the fixing frame (700). The area covered by the fixing frame (700) is provided with a primary inspection station and a secondary inspection station. The second moving mechanism (400) is used to drive the screen clamping mechanism (200) to switch from the primary inspection station to the secondary inspection station. The primary inspection station is the station where the inspection instrument (900) and the first inspection camera (310) inspect the screen (800); the second inspection mechanism (500) includes a second inspection camera (510), and the secondary inspection station is the station where the second inspection camera (510) inspects the screen (800).

8. The screen testing device according to claim 7, characterized in that, The area covered by the fixed frame (700) is also provided with a feeding station and a discharging station. The discharging station, the primary inspection station, the secondary inspection station and the discharging station are arranged sequentially along the moving direction of the second moving part (410). The screen testing equipment also includes a display device, which is electrically connected to the testing instrument (900), the first testing camera (310) and the second testing camera (510), and is adapted to display the testing information of the screen (800) located at the discharge station.

9. The screen testing device according to any one of claims 1 to 3, characterized in that, The screen clamping mechanism (200) includes a screen placement plate (210) and two vertically arranged positive and negative lead screw assemblies (220). The positive and negative lead screw assemblies (220) are fixed below the screen placement plate (210). The lead screw nut of the positive and negative lead screw assembly (220) extends towards the screen placement plate (210) to form a clamping part (230). Along the extension direction of the clamping part (230), the clamping part (230) is at least partially higher than the screen placement plate (210).

10. The screen testing device according to claim 9, characterized in that, The screen clamping mechanism (200) further includes a rotating assembly (240), which includes a rotatable rotating part (241) and a fixed base (242). The rotating part (241) is fixedly connected to the screen placement plate (210) to drive the screen placement plate (210) and the positive and negative lead screw assembly (220) to rotate relative to the fixed base (242).

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