Screen body lightening detection jig

Abstract

The invention provides a screen body lightening detection jig, and relates to the technical field of screen body lightening. The screen body lightening detection jig comprises a workbench, a detection device and a control device, wherein the workbench is provided with a bearing area for bearing a to-be-detected screen body; the at least two detection pieces are matched for use, and the detection ends of the detection pieces extend out of the bearing area; at least one detection piece is provided with a corresponding adjusting mechanism, the adjusting mechanism is used for driving the corresponding detection piece to move in the first direction, the screen body lightening detection jig is provided with the adjusting mechanism for at least one detection piece, and the adjusting mechanism can adjust the position of the detection end of the detection piece corresponding to the adjusting mechanism. Therefore, the distance between the detection ends of different detection pieces can be adjusted, lightening detection of to-be-detected screen bodies of different models can be met, and the screen body lightening detection jig is good in universality and low in detection cost.

Description

Technical Field

[0001] The present application relates to the technical field of screen lighting, and in particular to a screen lighting detection fixture. Background Art

[0002] Screen lighting is a test process used to detect and verify the performance of display screens. The screen is lit to confirm its working status and display effect. Screen lighting plays a vital role in the field of modern display technology. It not only involves the quality inspection of the display itself, but also the compatibility and performance optimization of the entire display system. The screen needs to be tested for screen lighting before leaving the factory. Most existing screen lighting detection fixtures can only detect a single model of screen. Different models of screens require different special fixtures. In other words, the existing screen lighting detection fixtures have poor versatility and high detection costs. Summary of the invention

[0003] The purpose of this application is to provide a screen lighting detection fixture with good versatility and low detection cost to address the above problems.

[0004] The present application provides a screen lighting detection fixture, including: A workbench, wherein the workbench has a bearing area for bearing a screen to be tested; At least two detecting members are used in combination, and the detecting ends of the detecting members extend from the bearing area; at least one of the detecting members is provided with a corresponding adjusting mechanism, and the adjusting mechanism is used to drive the corresponding detecting member to move along the first direction.

[0005] According to the technical solutions provided in some embodiments of the present application, the adjustment mechanism includes an adjustment component and an elastic connector; the adjustment component is used to drive the elastic connector to move along the first direction; the movable end of the elastic connector is connected to the corresponding detection component, and the fixed end of the elastic connector is connected to the adjustment component, so as to adjust the contact force between the detection end of the detection component and the screen to be tested; The detection fixture also includes a pressure head, which is installed on the workbench and is used to press down the screen to be tested placed on the bearing area in the vertical direction so that the test contact point on the screen to be tested is pressed tightly against the corresponding detection end of the detection member.

[0006] According to the technical solutions provided in some embodiments of the present application, the workbench has a cavity, and the adjustment component includes: an adjusting rod, one end of which is located in the cavity of the workbench, and the other end of which is located outside the cavity of the workbench; An adjusting block is threadedly connected to the adjusting rod and can slide relative to the workbench along the first direction. The fixed end of the elastic connecting member is arranged on the adjusting block.

[0007] According to the technical solution provided in certain embodiments of the present application, the inner wall of the cavity of the workbench is provided with a slide groove extending along the first direction; one end of the adjustment block close to the slide groove is slidably connected to the slide groove along the first direction.

[0008] According to the technical solutions provided in certain embodiments of the present application, the detection element includes at least one probe.

[0009] According to the technical solutions provided in some embodiments of the present application, the workbench includes a base and a position limiting platform detachably connected to the base; the position limiting platform is used to form the bearing area on the top surface of the base; A first positioning portion and a first magnetic portion are provided on the top surface of the base; a second positioning portion and a second magnetic portion are provided on the limiting platform; the limiting platform can be installed and positioned with the base through the cooperation of the first positioning portion and the second positioning portion, and can be detachably connected with the base through the cooperation of the first magnetic portion and the second magnetic portion.

[0010] According to the technical solutions provided in some embodiments of the present application, the limiting platform has two limiting end faces perpendicular to each other; the two limiting end faces are respectively used to abut against two side faces of the screen to be tested to limit the screen to be tested to the bearing area.

[0011] According to the technical solutions provided in certain embodiments of the present application, the distance between the detection end of the detection member and one of the limit end faces is 0.1-10 mm.

[0012] According to the technical solutions provided in some embodiments of the present application, the electrode properties of the detection ends of the two detection elements used in combination are opposite; The distance between the two detecting members used in combination is 1-100 mm.

[0013] According to the technical solution provided in certain embodiments of the present application, the screen lighting detection fixture also includes a PCBA for powering the detection component; a dip switch is provided on the PCBA; the dip switch is used to synchronously adjust the electrode properties of the detection ends of the two detection components used in combination.

[0014] Compared with the prior art, the beneficial effects of the present application are as follows: the screen lighting detection fixture provided by the present application includes a workbench, the workbench has a bearing area for bearing a screen to be tested, and also includes at least two detection pieces used in conjunction with each other, and the detection ends of the detection pieces extend from the bearing area; at least one detection piece is configured with a corresponding adjustment mechanism, and the adjustment mechanism is used to drive the corresponding detection piece to move along a first direction. When in use, first determine the distance between the test contact points of the screen to be tested according to the model of the screen to be tested, and then adjust the position of the detection end of the corresponding detection piece through the adjustment mechanism, so that when the screen to be tested is placed on the bearing area on the workbench, the detection end of each detection piece just contacts with each contact point of the screen to be tested, and the screen to be tested is lit up by energizing the detection end of each detection piece.

[0015] The screen lighting detection fixture provided in the present application configures an adjustment mechanism for at least one detection member, and the adjustment mechanism can adjust the position of the detection end of the corresponding detection member, thereby achieving adjustable spacing between the detection ends of different detection members, thereby satisfying the lighting detection of different models of screens to be tested.

[0016] It should be understood that the description of technical features, technical solutions, beneficial effects or similar language in this application does not imply that all features and advantages can be realized in any single embodiment. On the contrary, it is understood that the description of features or beneficial effects means that specific technical features, technical solutions or beneficial effects are included in at least one embodiment. Therefore, the description of technical features, technical solutions or beneficial effects in this specification does not necessarily refer to the same embodiment. Furthermore, the technical features, technical solutions and beneficial effects described in the present embodiment can also be combined in any appropriate manner. Those skilled in the art will understand that the embodiment can be realized without one or more specific technical features, technical solutions or beneficial effects of a specific embodiment. In other embodiments, additional technical features and beneficial effects can also be identified in a specific embodiment that does not embody all embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0018] Figure 1 A schematic diagram of a top view of the screen lighting detection fixture (with the screen to be tested installed) provided in an embodiment of the present application; Figure 2 A schematic diagram of the structure of a screen lighting detection fixture (without the screen to be tested installed) provided in an embodiment of the present application; Figure 3 A schematic diagram of the structure inside the workbench of the screen lighting detection fixture provided in an embodiment of the present application; Figure 4 A schematic diagram of the structure of the adjustment mechanism of the screen lighting detection fixture provided in an embodiment of the present application; Figure 5 A schematic diagram of the structure of a single probe needle mold of a screen lighting detection fixture provided in an embodiment of the present application; Figure 6 A schematic diagram of the structure of a multi-probe needle mold of a screen lighting detection fixture provided in an embodiment of the present application; Figure 7 A schematic diagram of the structure of the base bearing surface of the screen lighting detection fixture provided in an embodiment of the present application; Figure 8 A schematic diagram of the structure of the limit carrier of the screen lighting detection fixture provided in an embodiment of the present application; Fig. 9 A schematic diagram of the structure of the base and the limit carrier of the screen lighting detection fixture provided in the embodiment of the present application; Fig.10 for Figure 5 A magnified view of the part A in the middle; Fig.11 A schematic diagram of the probe spacing of the screen lighting detection fixture provided in an embodiment of the present application; Fig.12 This is a schematic diagram of the structure of the screen lighting detection fixture PCBA provided in an embodiment of the present application.

[0019] The text annotations in the figure represent: 100. Workbench; 200. Testing part; 1. Base; 11. First positioning part; 12. First magnetic part; 13. Strip groove; 2. Position limiting platform; 21. Second positioning part; 22. Second magnetic part; 23. Notch; 3. Adjustment mechanism; 31. Adjustment rod; 32. Adjustment block; 33. Elastic connector; 34. Fixing block; 4. Probe; 41. Positive probe; 42. Negative probe; 5. Needle mold; 51. Single probe needle mold; 52. Multi-probe needle mold; 6. Press head; 7. PCBA; 71. DIP switch; 8. Screen to be tested. DETAILED DESCRIPTION

[0020] In order to enable those skilled in the art to better understand the technical solution of the present application, the technical solution in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings. The description in this section is only exemplary and explanatory and should not have any limiting effect on the protection scope of the present application. Specifically, the described embodiments are only embodiments of a part of the present application, not all embodiments. Based on the embodiments in the present application, all other embodiments obtained by ordinary technicians in the field without making creative work should fall within the scope of protection of the present application.

[0021] It should be noted that similar reference numerals and letters represent similar items in the following figures, so once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0022] Screen lighting detection is a test process used to detect whether a display screen (such as LCD, TFT, OLED, etc.) can light up normally and display images. Specifically, the lighting contact point of the screen to be tested is in contact with the probe on the detection fixture, and the test screen is judged to be qualified based on the conduction and lighting effect of the screen to be tested. There are differences in the distance between the test contact points on different types of screens, and the screen lighting detection fixture in the prior art, due to the fixed shape of the fixture and the fixed distance between each detection probe, can generally only detect a single type of screen, and has poor versatility. Different types of screens need to design special detection fixtures, and the detection cost is high.

[0023] To solve the above problems, the present application provides a screen lighting detection fixture, please refer to Figures 1 to 3 , the test fixture includes: A workbench 100, the workbench 100 has a bearing area for bearing a screen body 8 to be tested; At least two detecting members 200 are used together, and the detecting end of the detecting member 200 extends from the bearing area; at least one detecting member 200 is configured with a corresponding adjusting mechanism 3, and the adjusting mechanism 3 is used to drive the corresponding detecting member 200 to move along the first direction.

[0024] For details, please refer to Figure 1 and Figure 2The workbench 100 provides a bearing area for the screen body 8 to be tested. Most of the detection member 200 is located below the bearing area of ​​the workbench 100. The detection end of the detection member 200 passes through the bearing area from below the bearing area and then extends from above the bearing area. The detection end of the detection member 200 is used to contact the test contact point on the screen body 8 to be tested so as to light it up for detection. The screen body 8 to be tested has at least two specific test contact points. When the screen body 8 to be tested is placed in the bearing area, the arrangement direction of the test contact points on the screen body 8 to be tested is parallel to the first direction, wherein the first direction is a direction parallel to the bearing area.

[0025] Please refer to Figure 3 The detection fixture provided in this embodiment is equipped with two detection pieces 200 for use together, and the two detection pieces 200 are respectively equipped with adjustment mechanisms 3. The two detection pieces 200 are arranged along the first direction, and the two adjustment mechanisms 3 are also arranged along the first direction. Each adjustment mechanism 3 can drive the corresponding detection piece 200 to move along the first direction, so that the detection end of the detection piece 200 can move along the first direction, and then the distance between the detection ends of the two detection pieces 200 can be adjusted to meet the lighting detection of different models of the screen body 8 to be tested.

[0026] It should be noted that in other embodiments of the present application, the adjustment mechanism 3 may be configured for only one of the detection members 200 .

[0027] Preferably, the detection fixture also includes a pressure head 6, which is installed on the workbench 100 and is used to press down the screen body 8 to be tested placed in the bearing area in the vertical direction so that the test contact point on the screen body 8 to be tested is pressed tightly against the corresponding detection end of the detection piece 200.

[0028] Specifically, in order to make the detection end of the detection piece 200 stably contact with the test contact point to ensure the smooth completion of the lighting detection process, a pressure head 6 is installed on the workbench 100. The pressure head 6 is a prior art, and its crimping stroke is 0-10mm. It has a crimping part. The function of the pressure head 6 is that its crimping part can move in the vertical direction to apply a vertical force to the screen body 8 to be tested placed on the bearing area, so that the test contact point on the screen body 8 to be tested is pressed against the corresponding detection end of the detection piece 200.

[0029] Furthermore, the adjustment mechanism 3 includes an adjustment component and an elastic connecting member 33; the adjustment component is used to drive the elastic connecting member 33 to move along the first direction; the movable end of the elastic connecting member 33 is connected to the corresponding detection member 200, and the fixed end of the elastic connecting member 33 is connected to the adjustment component, which is used to adjust the contact force between the detection end of the detection member 200 and the screen body 8 to be tested.

[0030] For details, please refer to Figure 3 and Figure 4The adjustment component of the adjustment mechanism 3 has an adjustment end, which can move along the first direction. An elastic connector 33 is installed on the adjustment end. The end of the elastic connector 33 away from the adjustment end is used to connect with the corresponding detection member 200. The elastic connector 33 is a spring steel sheet. The elastic connector 33 extends along the second direction. The second direction forms an angle with the first direction. Preferably, the second direction is perpendicular to the first direction. Figure 4 The extension direction of the adjustment component in is the first direction. By adopting the elastic connecting member 33, when the pressure head 6 applies the vertical force to the screen body 8 to be tested, the screen body 8 to be tested will simultaneously transmit the force to the detection member 200, and then transmit it to the elastic connecting member 33. Since the elastic connecting member 33 has elasticity, it will bend and deform when subjected to force, thereby simultaneously driving the detection member 200 to move downward synchronously, so as to effectively adjust the contact pressure between the detection end of the detection member 200 and the screen body 8 to be tested. Under the premise that the detection end of the detection member 200 and the screen body 8 to be tested are in stable contact, the risk of scratching the screen body 8 to be tested is reduced; when the lighting test is completed and the screen body 8 to be tested is removed, the elastic connecting member 33 will drive the detection end of the detection member 200 to move to the initial position under the action of its own restoring force.

[0031] Among them, when the pressure head 6 presses down the screen body 8 to be tested, the elastic connecting member 33 bends and deforms, driving the detection member 200 connected thereto to be compressed and moved downward in the range of 0.1-0.5mm, for example, it can be 0.1mm, 0.2mm, 0.3mm, 0.4mm, 0.5mm; preferably 0.3mm. If the movement is too large, the detection end of the detection member 200 may not be in stable contact with the test contact point of the screen body 8 to be tested. If the movement is too small, the screen body 8 to be tested may be damaged.

[0032] For further reference, Figure 2 and Figure 3 , the workbench 100 has a cavity, and the adjustment component includes: An adjusting rod 31, one end of the adjusting rod 31 is located in the cavity of the workbench 100, and the other end of the adjusting rod 31 is located outside the cavity of the workbench 100; The adjusting block 32 is threadedly connected to the adjusting rod 31 and can slide along the first direction relative to the workbench 100 . The fixed end of the elastic connecting member 33 is disposed on the adjusting block 32 .

[0033] Specifically, a cavity is formed inside the workbench 100 for installing the adjustment mechanism 3. Figure 3 and Figure 4A fixing block 34 is provided in the cavity of the workbench 100, and the fixing block 34 is provided on the bottom wall of the workbench. The adjusting rod 31 passes through the fixing block 34 along a first direction and is connected to the fixing block 34 through a bearing. The fixing block 34 has a first side and a second side distributed along the first direction. The part of the adjusting rod 31 located on the first side of the fixing block 34 is located in the cavity of the workbench 100, and one end located on the second side of the fixing block 34 extends from the side of the workbench 100. Optionally, the entire adjusting rod 31 is a screw rod, and the part of the adjusting rod 31 located on the second side of the fixing block 34 is sleeved with a fixing sleeve, which extends to the outside of the workbench 100 to form an adjusting knob, so that the inspector can turn the adjusting rod 31 conveniently; it can also be that the adjusting rod 31 is only provided with threads on the part located on the first side of the fixing block 34, and has no threads on the part located on the second side of the fixing block 34.

[0034] The portion of the adjusting rod 31 located on the first side of the fixed block 34 is threadedly connected with the adjusting block 32, and the adjusting block 32 is the adjusting end of the adjusting assembly. In order to prevent the adjusting block 32 from rotating synchronously with the adjusting rod 31 when the adjusting rod 31 is rotated around the axial direction of the adjusting rod 31, the adjusting block 32 is configured to be able to slide in a first direction relative to the workbench 100 (the specific method of achieving the sliding of the adjusting block 32 relative to the workbench is described below). When in use, the inspector rotates the adjusting rod 31 to move the adjusting block 32 in the first direction, thereby driving the elastic connecting member 33 and the detecting member 200 to move left and right accordingly, thereby achieving the adjustment of the detecting end position of the detecting member 200.

[0035] Furthermore, a slide groove extending along a first direction is provided on the inner wall of the cavity of the workbench 100; and one end of the adjustment block close to the slide groove is slidably connected to the slide groove along the first direction.

[0036] Specifically, in the present embodiment, the slide groove is arranged on the inner wall of the cavity of the workbench 100, for example, it can be on the top wall or bottom wall of the cavity of the workbench 100, and the width of the slide groove can be adapted to the size of the adjustment block 32, that is, the end of the adjustment block 32 close to the slide groove directly extends into the slide groove, or the width of the slide groove can be smaller than the size of the adjustment block 32, that is, a slider is provided at the end of the adjustment block 32 close to the slide groove, and the slider extends into the slide groove. In other embodiments, the slide groove can also be opened on the adjustment block 32, and a slider is provided on the inner wall of the corresponding side of the cavity of the workbench 100, and the cooperation of the slider and the slide groove realizes the relative sliding of the adjustment block 32 and the workbench 100. It should be noted that the manner in which the present application realizes the relative sliding of the adjustment block 32 and the workbench 100 is not limited to the cooperation of the slide groove and the slider, and the present application does not make specific limitations on this.

[0037] Furthermore, the detection element 200 includes at least one probe 4 .

[0038] Specifically, the detection member 200 includes a needle mold 5 and at least one probe 4 mounted on the needle mold 5. The end of the probe 4 away from the needle mold 5 is the detection end of the detection member 200. Preferably, the probe 4 is a round-headed probe. The needle mold 5 includes a single-probe needle mold 51 and a multi-probe needle mold 52. Figure 5 Shown is a single probe needle mold 51, Figure 6 The multi-probe needle mold 52 is shown. The single-probe needle mold 51 has only one mounting hole, that is, only one probe 4 can be installed. The multi-probe needle mold 51 is provided with multiple mounting holes, which are arranged in a row in sequence. Different needle molds 5 can be selected according to the number of luminous areas to be detected of the screen body 8 to be detected. If there is more than one luminous area to be detected, the multi-probe needle mold 51 is selected, and according to the specific number and position of the luminous areas to be detected, the mounting holes with the appropriate number and position are selected to insert the probe 4. The needle mold 5 is detachably connected to the elastic connector 33, for example, by screws to achieve detachable connection.

[0039] For further information, please refer to Figure 2 The workbench 100 includes a base 1 and a position limiting platform 2 detachably connected to the base, and the position limiting platform 2 is used to form a bearing area on the top surface of the base 1; refer to Figure 7 , a first positioning portion 11 and a first magnetic attraction portion 12 are provided on the top surface of the base 1; Figure 8 The limiting platform 2 is provided with a second positioning portion 21 and a second magnetic portion 22; the limiting platform 2 can be installed and positioned with the base 1 through the cooperation of the first positioning portion 11 and the second positioning portion 21, and can be detachably connected with the base 1 through the cooperation of the first magnetic portion 12 and the second magnetic portion 22.

[0040] Specifically, the base 1 is a hollow shell structure, the interior of the hollow shell structure forms a cavity of the workbench 100, and the top surface of the base 1 is a bearing surface, which is used to install the limit platform 2. Figure 7 As shown, a plurality of first positioning portions 11 and first magnetic attraction portions 12 are provided on the bearing surface. Figure 8As shown, a plurality of second positioning parts 21 and second magnetic parts 22 are correspondingly provided on the limiting platform 2, and the first positioning part 11 and the second positioning part 21 are plugged into and matched with each other to play a positioning role. Optionally, the first positioning part 11 is a positioning hole or a positioning groove and the second positioning part 21 is a positioning pin, or the first positioning part 11 is a positioning pin and the second positioning part 21 is a positioning hole or a positioning groove, and the first magnetic part 12 and the second magnetic part 22 are magnetically matched with each other to play a fixing role. The first magnetic part 12 and the second magnetic part 22 are magnets with opposite magnetic properties respectively. The positioning and fixing of the limiting platform 2 and the base 1 can be achieved by the first positioning part 11, the second positioning part 21, the first magnetic part 12 and the second magnetic part 22, and a bearing area for limiting the screen body 8 to be tested can be formed on the base 1, and the bearing area is used to place the screen body 8 to be tested (such as an OLED screen body). When the screen body 8 to be tested is placed in the bearing area, the test contact point thereon is just in the same plane as the probe 4, and then the end of the probe 4 away from the needle mold 5 is adjusted by adjusting the adjustment mechanism to contact the test contact point.

[0041] A strip groove 13 extending along the first direction is also provided on the top surface of the base 1 , which provides space for the probe 4 to extend from the base 1 and for the probe 4 to move along the first direction.

[0042] Preferably, the detection fixture is configured with at least two different limit platforms 2, and different limit platforms 2 are suitable for different models of screen bodies 8 to be tested. Each limit platform 2 can be detachably connected to the base 1, so as to be convenient for replacement to meet the lighting detection requirements of screen bodies to be tested of different models and sizes, thereby improving the versatility of the detection fixture and reducing the detection cost.

[0043] Furthermore, the limiting platform 2 has two limiting end surfaces that are perpendicular to each other; the two limiting end surfaces are respectively used to abut against two side surfaces of the screen body 8 to be tested, so as to limit the screen body 8 to be tested within the bearing area.

[0044] Specifically, refer to Fig. 9 The limiting platform 2 is approximately L-shaped, and the two mutually perpendicular limiting end faces are respectively the first limiting end face and the second limiting end face, both of which are located on the inner side of the L-shape, the first limiting end face extends along the first direction, and the second limiting end face extends along the second direction. When the limiting platform 2 is installed on the bearing surface, the first limiting end face and the second limiting end face jointly enclose a bearing area on the bearing surface, that is, the limiting platform 2 provides a placement and positioning function for the screen body 8 to be tested.

[0045] Optionally, a notch 23 is provided on the second limiting end surface for facilitating the removal of the screen body 8 to be tested from the limiting area, and the notch 23 is provided in the middle of the second limiting end surface.

[0046] Furthermore, the distance between the detection end of the detection member 200 and one of the limit end faces is 0.1-10 mm.

[0047] Specifically, the detection end of the detection member 200 is the free end of the probe 4, refer to Fig.10 , the distance between the free end of the probe 4 and the first limit end surface l The range is 0.1-10mm, for example, 0.1mm, 0.5mm, 1mm, 2mm, 3mm, 4mm, 5mm, 8mm, 10mm, preferably 0.5mm. For the screen 8 to be tested, the range of 10mm from the edge of the screen is an acceptable scratch range. If it exceeds this range, it will affect the bonding effect and lighting effect of the screen.

[0048] Furthermore, the electrode properties of the detection ends of the two detection members 200 used in conjunction with each other are opposite.

[0049] Specifically, the probe 4 used for lighting detection includes at least one positive probe 41 and one negative probe 42, that is, the probes installed on the needle molds 5 of the two detection pieces 200 used in conjunction are respectively the positive probe 41 and the negative probe 42. Generally, the positive and negative test contact points on the screen body 8 to be tested are located on the same straight line, so the positive probe 41 and the negative probe 42 are also located on the same straight line, and the first direction is the distribution direction of the positive probe 41 and the negative probe 42. The positive probe 41 and the negative probe 42 are respectively configured with corresponding adjustment mechanisms 3, and the adjustment mechanism 3 can adjust the position of the corresponding probe 4 along the first direction, that is, to achieve the left and right translation of the corresponding probe 4, so that the detection personnel can adjust the corresponding probe 4 to the corresponding luminous area circuit pad welding point according to the position of the luminous area required for lighting detection on the screen body 8 to be tested, so as to achieve the lighting detection requirements of different luminous areas. In addition, the distance between the positive and negative contact points on the screen body 8 to be tested of different models may be different. By setting the adjustment mechanism 3, the detection fixture can also meet the lighting detection of various different models of screen bodies to be tested.

[0050] Furthermore, the spacing range between the two detection members 200 used in combination is 1-100mm, that is, the spacing range between the positive probe 41 and the negative probe 42 is 1-100mm, which can be 1mm, 2mm, 3mm, 3.5mm, 4mm, 5mm, 10mm, 30mm, 50mm, 70mm, 90mm, 94mm, 94.5mm, 95mm, 100mm. Through the above settings, more types of screens to be tested can be detected.

[0051] Specifically, refer to Fig.11 , the distance between the positive electrode probe 41 and the negative electrode probe 42 w Adjustable, w The adjustable range is 3.5-94.5mm. In actual use, the spacing can be adjusted by the corresponding adjustment mechanism 3. w, to meet different lighting detection needs.

[0052] Furthermore, the detection fixture also includes a PCBA 7 for supplying power to the detection member 200 ; a dip switch 71 is provided on the PCBA 7 ; the dip switch 71 is used to synchronously adjust the electrode properties of the detection ends of the two detection members 200 used in conjunction with each other.

[0053] Specifically, refer to Fig.12 , PCBA (Printed Circuit Board Assembly) is located in the base 1, which is used to power the detection end (probe 4) of the detection member 200. Specifically, a slit is provided at the position corresponding to the probe 4 on the PCBA7. The position of the slit corresponds to the position of the strip groove 13, which allows the probe 4 to pass through and can also contact the probe 4 for electrical conduction. Half of the slit corresponds to the positive probe 41, and the other half corresponds to the negative probe 42. One end of the PCBA7 extends out from the base 1 and a dip switch 71 is provided on the extended part. By opening and closing the dip switch 71, the positive and negative properties of the positive probe 41 and the negative probe 42 can be adjusted synchronously, that is, the positive and negative directions of the energized positive and negative poles can be changed. The setting of the dip switch 71 can improve the compatibility of the detection fixture and adapt to the structural characteristics of different screen bodies 8 to be tested.

[0054] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and its core ideas of this application. The above is only the preferred implementation method of this application. It should be pointed out that due to the limitations of textual expression and the objective existence of infinite specific structures, ordinary technicians in this technical field can make several improvements, modifications or changes without departing from the principles of the present invention, and can also combine the above technical features in an appropriate manner; these improvements, modifications, changes or combinations, or the direct application of the inventive concept and technical solution to other occasions without improvement, should be regarded as the scope of protection of this application.

Claims

1. A screen lighting detection fixture, characterized in that: include: A workbench, wherein the workbench has a bearing area for bearing a screen to be tested; At least two detecting members for use together, wherein the detecting ends of the detecting members extend from the bearing area; At least one of the detection members is configured with a corresponding adjustment mechanism, and the adjustment mechanism is used to drive the corresponding detection member to move along the first direction.

2. The screen lighting detection fixture according to claim 1, characterized in that: The adjustment mechanism includes an adjustment component and an elastic connecting member; the adjustment component is used to drive the elastic connecting member to move along the first direction; the movable end of the elastic connecting member is connected to the corresponding detecting member, and the fixed end of the elastic connecting member is connected to the adjustment component, so as to adjust the contact force between the detecting end of the detecting member and the screen to be tested; The detection fixture also includes a pressure head, which is installed on the workbench and is used to press down the screen to be tested placed on the bearing area in the vertical direction so that the test contact point on the screen to be tested is pressed tightly against the corresponding detection end of the detection member.

3. The screen lighting detection fixture according to claim 2, characterized in that: The workbench has a cavity, and the adjustment component includes: an adjusting rod, one end of which is located in the cavity of the workbench, and the other end of which is located outside the cavity of the workbench; An adjusting block is threadedly connected to the adjusting rod and can slide relative to the workbench along the first direction. The fixed end of the elastic connecting member is arranged on the adjusting block.

4. The screen lighting detection fixture according to claim 3 is characterized in that: The inner wall of the cavity of the workbench is provided with a slide groove extending along the first direction; one end of the adjustment block close to the slide groove is slidably connected with the slide groove along the first direction.

5. The screen lighting detection fixture according to claim 1, characterized in that: The detection member includes at least one probe.

6. The screen lighting detection fixture according to claim 1, characterized in that: The workbench comprises a base and a position limiting platform detachably connected to the base; the position limiting platform is used to form the bearing area on the top surface of the base; A first positioning portion and a first magnetic portion are provided on the top surface of the base; a second positioning portion and a second magnetic portion are provided on the limiting platform; the limiting platform can be installed and positioned with the base through the cooperation of the first positioning portion and the second positioning portion, and can be detachably connected with the base through the cooperation of the first magnetic portion and the second magnetic portion.

7. The screen lighting detection fixture according to claim 6, characterized in that: The position-limiting platform has two position-limiting end surfaces that are perpendicular to each other; the two position-limiting end surfaces are respectively used to abut against two side surfaces of the screen to be tested, so as to limit the screen to be tested to the bearing area.

8. The screen lighting detection fixture according to claim 7, characterized in that: The distance between the detection end of the detection member and one of the limit end faces is 0.1-10 mm.

9. The screen lighting detection fixture according to claim 1, characterized in that: The electrode properties of the detection ends of the two detection elements used in combination are opposite; The distance between the two detecting members used in combination is 1-100 mm.

10. The screen lighting detection fixture according to claim 9, characterized in that: It also includes a PCBA for powering the detection element; a dip switch is provided on the PCBA; and the dip switch is used to synchronously adjust the electrode properties of the detection ends of the two detection elements used in conjunction with each other.

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