A detection jig and a test method for a display panel

Abstract

The application provides a detection jig and a test method for a display panel. The test method comprises the following steps: placing a display panel to be detected on a bearing table; arranging a positioning assembly at a corner of the display panel, and adjusting the positioning assembly so that the center of the display panel determined by the positioning assembly coincides with a preset center point on the bearing table; connecting the connecting end of the display panel to be detected to a switching component, and lighting up the display panel to be detected; aligning the data acquisition end of a detection device with the center position of the display panel, and detecting by using the data acquisition end; turning off the display panel, disconnecting the connection between the connecting end of the display panel and the switching component, releasing the fixation of the display panel by the positioning assembly, and transferring the display panel to be detected to a predetermined position. In this way, the center of the display panel determined by the positioning assembly coincides with the center on the bearing table by adjusting the positioning assembly and adjusting the position of the display panel to be detected, so that the data acquisition end improves the detection precision and the detection efficiency.

Description

Technical Field

[0001] This application relates to the field of testing technology, and in particular to testing fixtures and testing methods for display panels. Background Technology

[0002] AMOLED screens are self-emissive, eliminating the need for a backlight. Due to this self-emissive characteristic, AMOLED offers numerous advantages over LCDs, including higher contrast, ultra-thinness, and flexibility, leading to its increasingly widespread adoption. To ensure the display quality of the panels before they leave the factory, they need to be tested and have their driving parameters set. Typical tests include brightness / color uniformity, ghosting, gamma, and image quality checks. Generally, a light-up box is used to illuminate the display for testing, and a color analyzer is used with its lens positioned at the center of the screen to perform various optical tests. While existing testing fixtures exist, the accuracy of the test data still needs improvement. Summary of the Invention

[0003] In view of this, the purpose of this disclosure is to provide a testing fixture and testing method for display panels. This fixture can quickly align the data acquisition end of the testing device with the center of the display panel and perform testing, thereby improving testing accuracy and efficiency.

[0004] To achieve the above objectives, this application adopts the following technical solution:

[0005] A testing fixture for a display panel, comprising:

[0006] A support platform, wherein the support platform is square in shape;

[0007] The support platform includes a first side and a second side arranged opposite to each other.

[0008] The first side is provided with multiple positioning components. The combination of multiple positioning components is used to fix the placed display panel and identify the center of the placed display panel. The support platform is provided with an opening that extends through its thickness. The opening is used to pass through the connection end of the display panel.

[0009] An adjustment component is disposed on the second side of the support platform away from the positioning component;

[0010] A support assembly, one side of which is connected to the adjustment component;

[0011] The base, which is connected to the other side of the support assembly, and,

[0012] An adapter component is disposed on the base side and is connected to the drive device via a ribbon cable for connecting the connection end of the display panel on the support platform.

[0013] In one embodiment, the testing fixture further includes a support and a testing device. The testing device includes a data acquisition end, which is fixed on the support. During testing, the data acquisition end is located above the display panel and aligned with the center of the display panel.

[0014] Preferably, the support includes a robotic arm that holds the data acquisition terminal.

[0015] In one embodiment, a detection area is provided on the first side of the support platform. A center point is preset in the detection area. Multiple positioning components are provided in the circumferential direction of the detection area. The positioning components are used to be positioned at the corners of the display panel. The positioning components and the display panel are adjusted so that the center of the display panel confirmed by the multiple positioning components coincides with the center point of the detection area.

[0016] Preferably, the detection area is rectangular, with a center point preset within the detection area, positioning components are respectively provided at its four corners, and the opening is located within the detection area;

[0017] Preferably, the positioning component is fitted with a slide rail, which is arranged along the diagonal of the detection area;

[0018] Preferably, the detection area is rectangular, with a center point preset within the detection area, and positioning components are respectively provided at its four corners. The positioning components are provided with magnetic parts, and magnetic parts are provided in the areas corresponding to the corners on the diagonal of the detection area. The positioning components are fixed to the support platform by magnetic adsorption.

[0019] Preferably, the positioning component is provided with a permanent magnet, and the area corresponding to the corner on the diagonal of the detection area is provided with a permanent magnet, magnetic powder or iron-containing component, or the positioning component is provided with a permanent magnet, magnetic powder or iron-containing component, and the area corresponding to the corner on the diagonal of the detection area is provided with a permanent magnet.

[0020] In one embodiment, a sensor is provided on the positioning component, which is positioned at the corner of the display panel. The positioning component and the display panel are adjusted such that the center of the display panel, as confirmed by the plurality of positioning components, coincides with the center point of the detection area.

[0021] Preferably, the sensor is a laser sensor. The positions of the positioning components and the display panel are adjusted so that the center of the display panel, as confirmed by the multiple positioning components, coincides with the center point of the detection area, and a prompt is issued. The data acquisition end is aligned with the center of the display panel and detected.

[0022] Preferably, the positioning component is equipped with a displacement sensor or encoder. After the display panel to be detected is placed on the detection area, the positioning component is close to the corner of the display panel. The position of the positioning component and the display panel is adjusted so that the center of the display panel confirmed by multiple positioning components coincides with the center point of the detection area, and a prompt is issued. The data acquisition end is aligned with the center of the display panel and detected.

[0023] In one embodiment, the adjustment component is used to adjust the posture of the support platform, wherein, in normal conditions, the first side of the support platform is parallel to the plane of the base.

[0024] Preferably, the adjusting component includes a rotating shaft and a fixing member. The rotating shaft passes through the protrusion of the support platform and is installed in the fixing member. One end of the rotating shaft is connected to a driving unit, and the support platform rotates within a certain range along the rotating shaft based on the driving of the driving unit.

[0025] In one embodiment, the adjustment component includes two rotating shafts and a telescopic rod. The two rotating shafts are matched and disposed on opposite sides of the center of the support platform and fixed to the protruding part. One side of the telescopic rod is rotatably disposed on the base via a pin, and the other side is connected to the side of the support platform away from the positioning component.

[0026] Preferably, the adjustment component includes a rotating shaft and a telescopic rod. The rotating shaft is disposed in the middle of the support platform and its two sides are fixed to the protruding parts. The telescopic rod is rotatably disposed on the base through a pin, and its telescopic end is connected to the side of the support platform away from the positioning component.

[0027] Based on the same inventive concept, this application proposes a detection method, which includes the following steps:

[0028] Place the display panel to be tested on the support platform;

[0029] The positioning component is placed at the corner of the display panel, and the positioning component is adjusted so that the center of the determined display panel coincides with the preset center point on the support platform;

[0030] Connect the connector of the display panel to be tested to the adapter and turn on the display panel to be tested;

[0031] Align the data acquisition end of the detection device with the center of the display panel and use the data acquisition end to perform the detection.

[0032] Turn off the display panel, disconnect the connection between the display panel and the adapter, release the positioning component from fixing the display panel, and move the detected display panel to a predetermined position.

[0033] In one embodiment, the process of positioning the positioning component at the corner of the display panel and adjusting the positioning component so that the center of the determined display panel coincides with a preset center point on the support platform includes:

[0034] The positioning component moves on the matching slide rail, adjusting the position of the positioning component and the display panel so that the center of the determined display panel coincides with the preset center point on the support platform, or...

[0035] The positioning component is moved and the elastic telescopic device is used to move display panels of different sizes so that the center of the display panel, determined by the positioning component, coincides with the center of the support platform, or...

[0036] Trigger the sensor on the positioning component, move the positioning component, and wait for the indicator light on the diagonal positioning component to light up, indicating that the calibration is complete.

[0037] In one embodiment, the process of positioning the positioning component at the corner of the display panel and adjusting the positioning component so that the center of the determined display panel coincides with a preset center point on the support platform includes:

[0038] Position the positioning component close to the corner of the display panel;

[0039] The positioning component's position sensor measures the current position information in real time;

[0040] The processing module calculates the center of the display panel based on the feedback position information, and adjusts the position of the positioning component and the display panel until the calculated center of the display panel coincides with the center of the support platform.

[0041] Based on the same inventive concept, this application proposes a detection method, which includes the following steps:

[0042] Place the display panel to be tested on the support platform;

[0043] The support platform is adjusted to a preset angle and locked using the adjustment components;

[0044] Pass the connector of the display panel to be tested through the opening and connect it to the adapter component. Light up the display panel to be tested and perform image detection.

[0045] Disconnect the circuit board and adapter of the display panel to be tested, release the positioning component from fixing the display panel, and move the display panel to be tested to a predetermined position.

[0046] Compared with existing technologies, the inspection fixture for display panels proposed in this application improves upon existing technologies by pre-setting a center on the support platform and optimizing the positioning component mechanism. This allows for the adjustment of the position of the display panel to be inspected, ensuring its center coincides with the center of the support platform. This enables rapid alignment of the data acquisition end of the inspection device with the center of the display panel for inspection, thus improving both inspection accuracy and efficiency. This method can be used to inspect display panels of different sizes. Furthermore, during screen inspection, the posture of the support platform can be adjusted using adjustment components, thereby adjusting the inspection viewing angle. Attached Figure Description

[0047] To more clearly illustrate the technical solutions in this disclosure or related technologies, the accompanying drawings used in the description of the embodiments or related technologies will be briefly introduced below. Obviously, the accompanying drawings described below are only embodiments of this disclosure. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0048] Figure 1 This is a schematic diagram of the detection fixture according to an embodiment of this application from one perspective;

[0049] Figure 2 This is a top view of a detection fixture according to an embodiment of this application, with the support bracket removed.

[0050] Figure 3 This is a top view of the detection fixture according to another embodiment of this application, with the support hidden.

[0051] Figure 4 for Figure 2 This is a side view;

[0052] Figure 5 This is a schematic diagram of the detection method of the detection fixture according to an embodiment of this application;

[0053] Figure 6 This is a schematic diagram of the testing method of a testing fixture according to another embodiment of this application. Detailed Implementation

[0054] To make the objectives, technical solutions, and advantages of this disclosure clearer, the following detailed description is provided in conjunction with specific embodiments and the accompanying drawings.

[0055] It should be noted that, unless otherwise defined, the technical or scientific terms used in the embodiments of this disclosure should have the ordinary meaning understood by one of ordinary skill in the art to which this disclosure pertains. The terms "first," "second," and similar terms used in the embodiments of this disclosure 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 following 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 used only to indicate relative positional relationships; when the absolute position of the described object changes, the relative positional relationship may also change accordingly.

[0056] AMOLED (Active-matrix organic light-emitting diode) display panels are self-emissive and do not require a backlight. Due to their self-emissive nature, AMOLED has many advantages over LCD (Liquid Crystal Display), such as high contrast, ultra-thinness, and flexibility, and is being used more and more widely. Before leaving the factory, functional testing is required. Typical tests include checking brightness / color uniformity, ghosting, and gamma while the display panel is lit. The display panel is usually placed on a fixture at a fixed angle, and its connection terminals are electrically connected to a drive unit (such as a lamp holder). The lamp holder lights up the display panel and tests preset images (solid color images such as R-127, R-255, G-127, G-255, B-127, B-255, W-127, W-255, Gray-127, Gray-255, etc., and complex images such as faces and blue-green images). If the display angle needs to be adjusted, the fixture needs to be lifted and its position adjusted accordingly. Gamma or flicker testing is then performed. During flicker detection, a color analyzer is used to detect a specific image on the display panel. The data acquisition end (lens) of the detection device (color analyzer) needs to be aligned with a predetermined position (center) on the display panel for optical testing (such as detecting flicker or gamma). At this time, the data acquisition end must be aligned with the center of the display panel and close to it, or at a distance less than a certain limit. Currently, most systems use a tripod to fix the lens or the lens and color analyzer. However, when continuously testing multiple display panels, the results vary significantly between them, indicating large fluctuations. This affects the judgment of the test results. Furthermore, each panel needs to be aligned with its center individually, which is time-consuming and inefficient.

[0057] Based on the problems discovered by the inventors during long-term actual production, improvements have been made to the current inspection fixture for display panels. The improved inspection fixture can quickly determine / correct the center of the display panel, and the angle of the display panel can be adjusted during screen inspection to meet the inspection requirements of different viewing angles. This inspection fixture can be used for the inspection of display panels (also known as displays) of different sizes.

[0058] The testing device includes a support platform with multiple slide rails on one side. Each slide rail is fitted with a positioning component. The combination of the multiple positioning components is used to fix the display panel to be tested in place. The support platform has an opening.

[0059] An adjustment component is provided in the middle of the side of the platform away from the slide rail. The adjustment component is connected to the support assembly, which is mounted on the base. The adjustment component can adjust the posture of the platform, and thus can be used to adjust the detection angle.

[0060] The testing fixture includes an adapter component that is connected to a drive unit (such as a light box) via a ribbon cable. The drive unit is used to light up the connected display panel and display a preset image (such as R-127, R-255, G-127, G-255, B-127, B-255, W-127, W-255, Gray-127, Gray-255, etc.).

[0061] The testing fixture also includes a testing device, which includes a data acquisition end that can be fixed to a bracket. During testing, the data acquisition end is positioned above the display panel and aligned with the center of the display panel. In some cases, the bracket can be a robotic arm.

[0062] During testing, the display panel to be tested is placed on a support platform and fixed using a positioning component. The positioning component can also be used to determine or correct the center position of the display panel. The connecting part of the display panel passes through the opening and connects to the adapter component, which is connected to the driving device (such as a lamp holder). The display panel is illuminated based on the drive of the driving device. Then, the data acquisition end of the testing device (color analyzer) is aligned with the center (sometimes called the center point) of the display panel and tested. In this method, the position of the center point of the display panel is known by the testing fixture, and the lens can be quickly aligned with this position, improving testing efficiency while reducing the alignment time.

[0063] Next, we will combine the appendix Figures 1-4 This application describes a testing fixture (hereinafter referred to as the testing fixture) for a display panel proposed in an embodiment of the present application.

[0064] like Figure 1 The diagram shown is a structural schematic of the testing fixture according to an embodiment of this application.

[0065] Preferably, the testing fixture support platform 140 is square, including a first side 140a and a second side 140b arranged opposite to each other. The first side 140a is provided with a plurality of positioning components 150. The combination of the plurality of positioning components 150 is used to fix the placed display panel (not shown) and identify the center of the placed display panel. The support platform is provided with an opening 141 that extends through its thickness direction (z direction). The opening 141 is used for the connection end of the display surface to pass through after it is placed to connect to the adapter component 160.

[0066] An adjustment component 130 is disposed on the second side 140b of the support platform 140, away from the positioning component 150; the adjustment component 130 can adjust the posture of the support platform 140, and thus can be used to adjust the detection angle of the display panel thereon.

[0067] Support component 120, one side of which is connected to adjustment component 130;

[0068] The base 110 connects to the other side of the support assembly 120. It should be noted that the actual testing fixture is equipped with a drive device (i.e., a light box, not shown in the figure), which lights up / turns off the connected display panel based on commands. In the lit state, a preset image is displayed.

[0069] The testing fixture also includes a bracket 210 and a testing device. The testing device includes a data acquisition terminal 220, which is fixed on the bracket 210. During testing, the data acquisition terminal 220 is located above the display panel and aligned with the center of the display panel.

[0070] In normal operation, the support platform 140 is parallel to the plane 110a where the base 110 is located. The opening can be rectangular, elliptical, or any other shape, as long as it allows the connection end of the display panel to be tested to pass through. Preferably, the adjustment member 130 is located at the center of the second side 140b of the support platform 140 and extends along the width direction (y-direction) of the support platform. A locking member is provided on the side of the adjustment member to lock the posture of the support platform; that is, after adjusting the detection angle, the locking member is used to fix the support platform. In other embodiments, the adjustment member 130 can be located on one side of the second side 140b of the support platform 140, and a support frame is provided on the side of the second side 140b away from the adjustment member 130. In normal operation, the support platform 140 is parallel to the plane 110a where the base 110 is located, and the support frame supports the support platform 140.

[0071] The adapter 160 is connected to the drive unit via a ribbon cable. The drive unit is used to light up the connected display panel and display a preset image (such as R-127, R-255, G-127, G-255, B-127, B-255, W-127, W-255, Gray-127, Gray-255, etc.).

[0072] In one embodiment, a detection area 140c is provided on one side (first side) of the support platform. Multiple positioning components 150 are arranged circumferentially around the detection area 140c. For example, if the detection area is rectangular, positioning components are respectively provided at its four corners to fix the four corners of the display panel. The opening is located within the detection area. The positioning components are matched with slide rails, and the positioning components move or move synchronously on the slide rails to fix or unlock the display panel. Preferably, the slide rails are arranged along the diagonal of the detection area. This design allows for quick adjustment of the placement position and centering of display panels of the same size after they are placed on the detection area. For display panels of different sizes, the center point can be quickly determined by sliding the positioning components after they are placed on the detection area.

[0073] In one embodiment, see Figure 2 The first side of the support platform 140 is provided with a detection area 140c, which is rectangular and has a center point 142 (which can be a reference point). Taking a rectangular display panel to be tested as an example, positioning components (also called diagonal positioning components) 150 are respectively provided at the four corners (diagonals) of the detection area to position / fix the four corners of the display panel. Sensors (such as laser sensors) are provided on the positioning components. After the display panel is fixed, the four positioning components are located at the corners of the display panel. If the center of the rectangle formed by the positioning components is consistent with / coincides with the center point of the detection area after adjusting the placement of the display panel (if the sensor issues a prompt), then the display panel to be tested is considered to be properly placed / calibrated, and then testing is performed (the data acquisition end is aligned with the center of the display panel and then testing is performed). In this embodiment, the positioning components are matched with slide rails, and the positioning components move on the slide rails to fix or unlock the display panel.

[0074] See one implementation method Figure 2 or Figure 3 The support platform 140 can be rectangular. Multiple positioning components 150 are provided on one side of the support platform 140, each of which is matched with a slide rail extending diagonally along the support platform 140. The slide rail can be disposed on the surface of one side of the support platform, or it can be partially embedded within the support platform (in which case a groove is pre-set on the support platform). The combination of multiple positioning components is used to fix the display panel to be tested and to identify the center of the display panel.

[0075] In one embodiment, the positioning component is fixed to the support platform by magnetic adsorption. For example, a detection area is provided on one side of the support platform. The detection area is rectangular and has a center point in its center. Magnetic components are provided at the corners (diagonally opposite) of the detection area. The positioning component is also provided with magnetic components and is fixed to the support platform by magnetic adsorption. This design facilitates adjustment of the fixture width according to the display screen size, making it convenient for placing the display panel. Preferably, the positioning component is provided with a permanent magnet, and the support platform is provided with a permanent magnet, magnetic powder, or an iron-containing component. Alternatively, the positioning component may be provided with a permanent magnet, magnetic powder, or an iron-containing component, and the support platform may be provided with a permanent magnet.

[0076] In one embodiment, a detection area is provided on one side of the support platform. This area is square, with movable guide rails along its diagonals. Positioning components are located at both ends of the guide rails. Each positioning component is equipped with an adjustable-angle laser emitter, electrically connected to a matching power supply unit. By extending and retracting the positioning components / adjusting the placement of the display panel to ensure it is flush against the display panel, and adjusting the laser direction, the laser beams from adjacent fixed components are directed perpendicularly to the opposite side (e.g., the laser from the upper left corner points to the right, and the laser from the upper right corner points downwards). The four laser beams converge at the central area, which is the center. This method allows for rapid and accurate positioning.

[0077] As a variation of this method, marking lines are set along the diagonal of the detection area, and magnetic components are placed in the detection area. The positioning component is fixed to the support platform by magnetic adsorption. This design facilitates the adjustment of the fixture width according to the size of the display panel, making it easier to place the display panel. The positioning component is equipped with a permanent magnet, and the support platform is equipped with a permanent magnet, magnetic powder, or iron-containing components. Alternatively, the positioning component can be equipped with a permanent magnet, magnetic powder, or iron-containing components, and the support platform can be equipped with a permanent magnet.

[0078] In one embodiment, the testing fixture includes a robotic arm and a support platform. A testing area, square in shape (e.g., rectangular), is provided on one side of the support platform and has a pre-defined center point. The positioning component is equipped with a displacement sensor or encoder. After the display panel to be tested is placed on the testing area, the positioning component is placed against the corner of the display panel. The positioning component measures the corner coordinates in real time and feeds them back to the processing module. The processing module calculates the average coordinates of the four corners (e.g., X, Y, Z coordinates) to determine the center of the display panel. If there is an offset between the calculated center of the display panel and the pre-defined center point, the display panel, i.e., the positioning component, can be adjusted until the calculated center of the display panel is consistent with or coincides with the pre-defined center point. In this embodiment, the calculation of the center of the display panel being consistent with the pre-defined center point can be understood as the calculation of the center of the display panel being consistent with the pre-defined center point. The distance between the center of the display panel and a preset center point is less than a threshold (the threshold varies for display panels of different sizes (e.g., 2mm for 5-inch panels, 3mm for 6.67-inch panels), and can be the same in other embodiments). The detection fixture includes a robotic arm that holds the lens of the color analyzer. Based on the center information transmitted by the processing module, the robotic arm moves the lens to the center position and then performs the detection. This method allows for quick and accurate determination of the center point of the display panel, enabling the lens to be quickly aligned to this position, reducing alignment time and improving detection efficiency. In other embodiments, center correction of the display panel may not be performed; instead, the center of the display panel is calculated, and the robotic arm moves the lens to the center position before detection.

[0079] In one optional embodiment, the bracket is equipped with an X / Y track, and a detection device (color analyzer such as CA410) is mounted on the X / Y track. The drive unit of the X / Y track moves the lens to the center position based on the center information transmitted by the processing module, and then performs detection. This method can quickly and accurately determine the position of the center point of the display panel. Using a robotic arm, the lens can be quickly aligned to this position, reducing the alignment time and improving detection efficiency. The detection device is used to acquire information about the preset image of the display panel when it is lit.

[0080] In one embodiment, the testing fixture includes a support platform with a testing area on one side. A positioning component is located diagonally on the testing area. The positioning component has a built-in elastic telescopic device (such as a telescopic probe), a spring-driven telescopic probe, and the probe faces the center. This method is used for display panels of a certain size. If the size of the display panel is changed, the positioning component can be moved in advance before testing.

[0081] In the above embodiment, after the display panel to be tested is placed on the support platform, the display panel is fixed by the positioning component and the center position of the display panel is determined. The connecting part of the display panel passes through the opening and is connected to the adapter component. The adapter component is connected to the driving device. The display panel is lit up based on the driving of the driving device. Then, the detection device (color analyzer) is used for detection, which improves the detection efficiency and reduces the time required for alignment (center position of the display panel).

[0082] The detection device (color analyzer such as CA410) can be mounted on a bracket and positioned above the display panel during detection, with the detection device aligned with the center of the display panel to be identified.

[0083] During image inspection, the posture of the platform can be adjusted using an adjustment component, which in turn can be used to adjust the inspection viewing angle. The adjustment component is connected to a support assembly on the side away from the platform, and the support assembly is mounted on a base.

[0084] In one embodiment, the adjustable component includes a rotating shaft and two fixing members. The rotating shaft passes through a protrusion on the support platform and is mounted between two fixing members. The support platform rotates along the rotating shaft to adjust the viewing angle. The rotating shaft is connected to a drive unit (such as a servo motor). Initially, the support platform and the base are parallel to each other. The drive unit is electrically connected to a control button. Based on the button control, the drive unit rotates within a certain range (such as the angle between the support platform and the base of 10°, 15°, 20°, 25°, 30°, 35°, 40°, 45°, 50°, 55°, 60°, 65°) to meet different viewing angle requirements. The fixing members are mounted on the support assembly. In this configuration, the drive unit can also serve as a locking mechanism. In this embodiment, the adjustment angle is adjusted in increments of 5°; in other embodiments, this is not limited.

[0085] In one embodiment, the adjusting component includes a telescopic assembly and a rotating assembly.

[0086] See Figure 2 and Figure 4The rotating assembly includes two rotating shafts 131 and a telescopic rod 170. The two rotating shafts are matched and disposed on opposite sides of the middle of the support platform 140 and are rotatably fixed to the protrusion 132. The telescopic rod is disposed on the base, and its telescopic end 171 is connected to the side of the support platform 140 away from the positioning component 150 (i.e., the second side). The telescopic rod can be electrically driven, pneumatically driven, or hydraulically driven. Based on the extension and retraction of the telescopic rod, the support platform rotates along the rotating shaft by a preset angle, and stops and locks after reaching the preset angle. In the initial state, the rotating component is not triggered, and the support platform is parallel to the base. It is locked by the locking mechanism. When the fixture is in the second state, the telescopic fixture, based on the telescopic rod, causes the support platform to rotate 45° or 60° along the axis of rotation and then locks. Image detection (e.g., R-127, R-255, G-127, G-255, B-127, B-255, W-127, W-255, Gray-127, Gray-255, etc.) is performed, and the display panel to be tested is judged to be qualified based on the displayed information. Preferably, a slider 142 is provided on the second side of the support platform 140. This slider 142 is connected to the telescopic end 171. Based on the extension and retraction of the telescopic end 171, the support platform 140 rotates along the axis of rotation 131 while the slider 142 moves on the second side.

[0087] As Figure 2 and Figure 4 In a variation of the implementation, the rotating assembly includes a rotating shaft (one side of the shaft omitted) and a telescopic rod. The rotating shaft is disposed through the center of the support platform and rotatably fixed to the protrusion 132. The telescopic rod is rotatably mounted on the base via a pin, and its telescopic end is connected to the side of the support platform away from the positioning component. The telescopic rod can be electrically driven, pneumatically driven, or hydraulically driven. The extension and retraction of the telescopic rod causes the support platform to rotate along the rotating shaft by a preset angle, stopping and locking after reaching the preset angle. In the initial state, the rotating assembly is not triggered, and the support platform is parallel to the base, locked by the locking mechanism. When the fixture is in the second state, the telescopic rod causes the support platform to rotate 45° or 60° along the rotating shaft and then lock, performing image detection.

[0088] In an alternative implementation, see Figure 3 The rotating assembly includes a rotating shaft 131 and a driving member 232. One end of the rotating shaft 131 is connected to the output end of the driving member 232, and the other end passes through a through hole and is fixedly connected to the support platform 140. That is, in this embodiment, the driving member drives the rotating shaft 131 to rotate, thereby driving the support platform 140 to rotate. The driving member 232 also serves as a locking mechanism.

[0089] This application provides a detection method using the aforementioned detection fixture, such as... Figure 5 As shown, the detection method includes the following steps:

[0090] Place the display panel to be tested on the support platform;

[0091] The positioning component is placed at the corner of the display panel, and the positioning component is adjusted so that the center of the determined display panel is consistent with / coincides with the preset center on the support platform; in this step, the positioning component is moved to determine the center position of the display panel and adjusted so that the center of the display panel coincides with the center on the support platform to complete the correction; the positioning component also has the function of fixing the display panel.

[0092] Connect the connector of the display panel to be tested to the adapter and turn on the display panel to be tested;

[0093] Align the data acquisition end of the detection device with the center of the display panel and use the data acquisition end to perform the detection.

[0094] Turn off the display panel, disconnect the connection between the display panel and the adapter, release the positioning component from fixing the display panel, and move the detected display panel to a predetermined position (repeat the test for the next display panel). Preferably, the data acquisition end is vertically aligned with the center of the display panel. The data acquisition end acquires information about a predetermined screen display, such as W-125 / 255, from the illuminated display panel and feeds it back to the detection device. The detection device processes the information and may subsequently optimize parameters to meet shipping requirements. This method adjusts the positioning component to adjust the position of the display panel to be tested, ensuring that the center / center position of the display panel determined by the positioning component coincides with the center (preset) on the carrier platform. This improves detection accuracy and efficiency (reducing alignment time) for the data acquisition end.

[0095] In one embodiment, placing the display panel to be tested on the support platform includes placing the display panel to be tested in the testing area of ​​the support platform.

[0096] The positioning component is positioned at the corner of the display panel, and adjusted so that the center of the display panel coincides with the preset center on the support platform. This includes moving the positioning component on a matching slide rail and adjusting the positions of the positioning component and the display panel to align the center of the display panel with the preset center on the support platform. A robotic arm is used to move the data acquisition end (e.g., a lens) to this center position, and then inspection is performed. Alternatively, the drive unit of the X / Y rail can be used to move the data acquisition end (e.g., a lens) to this center position, and then inspection is performed. This method reduces the alignment time while improving inspection efficiency.

[0097] In one embodiment, a positioning component is disposed at the corner of the display panel, and the positioning component is adjusted so that the center of the determined display panel coincides with / overlaps with a preset center on the support platform. This includes moving the positioning component and using an elastic telescopic device to move (match) display panels of different sizes so that the center of the display panel determined by the positioning component coincides with the center on the support platform.

[0098] In one embodiment, a positioning component is positioned at a corner of the display panel, and the positioning component is adjusted to align / coincide with a preset center on the support platform. This includes triggering a sensor on the positioning component, moving the positioning component, and illuminating the (laser) indicator light on the diagonal positioning component to indicate that the calibration is complete (i.e., the center of the display panel determined by the positioning component coincides with the center on the support platform). Alternatively, an audible prompt may be emitted to indicate that the calibration is complete (i.e., the center of the display panel determined by the positioning component coincides with the center on the support platform). Then, a calibration completion signal is output, and the support platform is locked using an adjustment component. Alternatively, once the center of the display panel determined by the positioning component coincides with the center on the support platform, the result is fed back to the data acquisition terminal of the detection device, and the data acquisition terminal responds to the signal to perform detection.

[0099] In one embodiment, illuminating the display panel to be detected includes illuminating the display panel and switching to a predetermined screen, such as w-125 / 255, and collecting information from the screen.

[0100] In one embodiment, the process of positioning the positioning component at the corner of the display panel and adjusting the positioning component so that the center of the determined display panel coincides with a preset center point on the support platform includes:

[0101] Position the positioning component close to the corner of the display panel;

[0102] The positioning component's position sensor measures the current position information in real time;

[0103] The processing module calculates the center of the display panel based on the feedback position information, and adjusts the position of the positioning component and the display panel until the calculated center of the display panel coincides with the center of the support platform. In one embodiment, a display module is included, which displays the position information of the positioning component, the calculated center of the display panel, and the position information of a preset center point. Based on this, the position of the display panel can be intuitively moved for correction.

[0104] As Figure 5 A variation of the detection method shown, comprising the following steps:

[0105] Place the display panel to be tested on the support platform;

[0106] Position the positioning component at the corner of the display panel and adjust the positioning component to determine the center of the display panel;

[0107] Connect the connector of the display panel to be tested to the adapter and turn on the display panel to be tested;

[0108] Align the data acquisition end of the detection device with the center position of the determined display panel, and use the data acquisition end to perform the detection;

[0109] The display panel is turned off, the connection between the display panel and the adapter is disconnected, the positioning component is released from fixing the display panel, and the detected display panel is moved to a predetermined position (the test is repeated for the next display panel). Preferably, the data acquisition end is vertically aligned with the center of the display panel. In this method, the center position of the display panel is determined by the positioning component, the data acquisition end of the detection device is aligned with this position, and then detection is performed until the detection is completed. The display panel to be tested is then turned off, and the next display panel is switched. The data acquisition end acquires information such as the predetermined screen image of the lit display panel (e.g., w-125 / 255) and feeds it back to the detection device. The detection device processes the information obtained, such as optimizing parameters to meet shipping requirements in subsequent tests.

[0110] In one embodiment, a positioning component is placed at the corner of the display panel, and the positioning component is adjusted to determine the center of the display panel. This includes triggering a sensor on the positioning component, moving the positioning component to fit snugly against the corner of the display panel, and the positioning component measuring the corner coordinates in real time and feeding them back to the processing module. The processing module calculates the average coordinates of the four corners to determine the center of the display panel. Based on the center information transmitted by the processing module, the robotic arm of the inspection fixture moves the data acquisition end (such as a lens) to the center position and then performs inspection. This method can quickly and accurately determine the position of the center point of the display panel, and the robotic arm lens can be quickly aligned with this position, reducing the alignment time and improving inspection efficiency.

[0111] In one embodiment, a positioning component is positioned at the corner of the display panel, and adjusting the positioning component to determine the center of the display panel includes triggering a sensor on the positioning component, moving the positioning component to fit snugly against the corner of the display panel, and the positioning component measuring the corner coordinate information in real time and feeding it back to the processing module. A drive unit based on an X / Y track moves the data acquisition end (such as a lens) to the center position, and then detection is performed. This method can quickly and accurately determine the position of the center point of the display panel. Using a robotic arm and lens, this position can be quickly aligned, reducing alignment time and improving detection efficiency. The detection device is used to acquire information about a preset image on the display panel when it is illuminated.

[0112] In one embodiment, a positioning component is positioned at the corner of the display panel, and the positioning component is adjusted to determine the center of the display panel, including issuing a prompt (such as emitting sound or light) after determination.

[0113] Based on the same inventive concept, this application proposes a detection method using the aforementioned detection fixture, such as... Figure 6 As shown, the detection method includes the following steps:

[0114] The display panel to be tested is placed on the carrier platform; this step also includes using positioning components to fix the display panel to be tested (at this time, there is no need to calibrate or confirm its center) on the carrier platform;

[0115] The support platform is adjusted to a preset angle and locked using the adjustment components;

[0116] Pass the connector of the display panel to be tested through the opening and connect it to the adapter component. Light up the display panel to be tested and perform image detection.

[0117] After connecting the display panel to be tested to the adapter, lighting up the display panel, and performing image testing, the process also includes:

[0118] Disconnect the circuit board and adapter of the display panel to be tested, release the positioning component from fixing the display panel, and move the display panel to be tested to a predetermined position (repeat the test of the next display panel).

[0119] In one embodiment, adjusting and locking the posture of the support platform using the adjustment component includes: adjusting the angle between the support platform and the base using the adjustment component, such as adjusting the angle to be between 45-60 degrees (e.g., 45°, 46°, 47°, 48°, 49°, 50°, 51°, 52°, 53°, 54°, 55°, 56°, 57°, 58°, 59°, 60°) and locking it (e.g., the support platform is rotated to a preset viewing angle / angle based on the drive of the drive unit, the drive unit can also be used as a locking mechanism or the support platform can be rotated along the axis of rotation to a preset viewing angle / angle based on the drive of the drive component), and performing detection in this state, such as manual inspection or detection using an image acquisition device, where the angle is the optimal (e.g., human eye) recognition angle. During testing, the display panel is illuminated using a light box to test preset images (such as R-127, R-255, G-127, G-255, B-127, B-255, W-127, W-255, Gray-127, Gray-255, etc.), and the display panel to be tested is judged as qualified based on the displayed information.

[0120] It should be noted that the above description describes some embodiments of this disclosure. Other embodiments are within the scope of the appended claims. In some cases, the actions or steps recorded in the claims can be performed in a different order than that shown in the above embodiments and still achieve the desired result. Furthermore, the processes depicted in the drawings do not necessarily require a specific or sequential order to achieve the desired result. In some embodiments, multitasking and parallel processing are also possible or may be advantageous.

[0121] This disclosure is 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 this disclosure should be included within the scope of protection of this disclosure.

Claims

1. A testing fixture for display panels, characterized in that, include: The support platform is square and includes a first side and a second side arranged opposite to each other. The first side is provided with a plurality of positioning components. The combination of the plurality of positioning components is used to fix the placed display panel and identify the center of the placed display panel. The support platform is provided with an opening that extends through its thickness and is used to allow the connection end of the display panel to pass through. An adjustment component is disposed on the second side of the support platform away from the positioning component; A support assembly, one side of which is connected to the adjustment component; The base, which is connected to the other side of the support assembly, and, An adapter component is disposed on the base side and is connected to a driving device via a ribbon cable. The adapter component is used to connect the connection end of the display panel on the support platform, and the driving device is used to illuminate the connected display panel.

2. The testing fixture as described in claim 1, characterized in that, It also includes a bracket and a testing device. The testing device includes a data acquisition end, which is fixed to the bracket. During testing, the data acquisition end is located above the display panel and aligned with the center of the display panel. Preferably, the support includes a robotic arm that holds the data acquisition terminal.

3. The testing fixture as described in claim 1, characterized in that, The first side of the support platform is provided with a detection area, a center point is preset in the detection area, and multiple positioning components are provided in the circumferential direction of the detection area. The positioning components are used to be set at the corner of the display panel, and the positioning components and the display panel are adjusted so that the center of the display panel confirmed by the multiple positioning components coincides with the center point of the detection area. Preferably, a positioning component is provided at the diagonal position of the detection area, and the positioning component has a built-in elastic telescopic device; preferably, the elastic telescopic device includes a telescopic probe; Preferably, the detection area is rectangular, with a center point preset within the detection area, positioning components are respectively provided at its four corners, and the opening is located within the detection area; Preferably, the positioning component is fitted with a slide rail, which is arranged along the diagonal of the detection area; Preferably, the detection area is rectangular, with a center point preset within the detection area, and positioning components are respectively provided at its four corners. The positioning components are provided with magnetic parts, and magnetic parts are provided in the areas corresponding to the corners of the diagonal of the detection area. The positioning components are fixed to the support platform by magnetic adsorption. Preferably, the positioning component is provided with a permanent magnet, and the area corresponding to the corner on the diagonal of the detection area is provided with a permanent magnet, magnetic powder or iron-containing component, or the positioning component is provided with a permanent magnet, magnetic powder or iron-containing component, and the area corresponding to the corner on the diagonal of the detection area is provided with a permanent magnet.

4. The testing fixture as described in claim 3, characterized in that, The positioning component is equipped with a sensor, and the positioning component is used to be positioned at the corner of the display panel. The positioning component and the display panel are adjusted so that the center of the display panel, as confirmed by the multiple positioning components, coincides with the center point of the detection area. Preferably, the sensor is used to measure the current position information in real time, and the combination of multiple sensors calculates the center of the display panel; Preferably, the sensor is a laser sensor, and the position of the positioning components and the display panel is adjusted so that the center of the display panel, as confirmed by the multiple positioning components, coincides with the center point of the detection area, and a prompt is issued; Preferably, the positioning component is equipped with a displacement sensor or encoder. After the display panel to be detected is placed on the detection area, the positioning component is close to the corner of the display panel. The position of the positioning component and the display panel is adjusted so that the center of the display panel confirmed by the multiple positioning components coincides with the center point of the detection area, and a prompt is issued.

5. The testing fixture as described in claim 1, characterized in that, The adjustment component is used to adjust the posture of the support platform. Normally, the first side of the support platform is parallel to the plane or horizontal plane where the base is located. Preferably, the adjusting component includes a rotating shaft and a fixing member. The rotating shaft passes through the protrusion of the support platform and is installed in the fixing member. One end of the rotating shaft is connected to a driving unit, and the support platform rotates within a certain range along the rotating shaft based on the driving of the driving unit.

6. The testing fixture as described in claim 1, characterized in that, The adjustment component includes two rotating shafts and a telescopic rod. The two rotating shafts are matched and set on opposite sides of the middle of the support platform and fixed on the protruding part. One side of the telescopic rod is rotatably set on the base through a pin, and the other side is connected to the side of the support platform away from the positioning component. Preferably, the adjustment component includes a rotating shaft and a telescopic rod. The rotating shaft is disposed in the middle of the support platform and its two sides are fixed to the protruding parts. The telescopic rod is rotatably disposed on the base through a pin, and its telescopic end is connected to the side of the support platform away from the positioning component.

7. A detection method, characterized in that, The detection method includes the following steps: Place the display panel to be tested on the support platform; The positioning component is placed at the corner of the display panel, and the positioning component is adjusted so that the center of the determined display panel coincides with the preset center point on the support platform; Connect the connector of the display panel to be tested to the adapter and turn on the display panel to be tested; Align the data acquisition end of the detection device with the center of the display panel and use the data acquisition end to perform the detection. Turn off the display panel, disconnect the connection between the display panel and the adapter, release the positioning component from fixing the display panel, and move the detected display panel to a predetermined position.

8. The detection method as described in claim 7, characterized in that, The step of placing the positioning component at the corner of the display panel and adjusting the positioning component so that the center of the determined display panel coincides with the preset center point on the support platform includes: The positioning component moves on the matching slide rail, adjusting the position of the positioning component and the display panel so that the center of the determined display panel coincides with the preset center point on the support platform, or... The positioning component is moved and a flexible telescopic device is used to match the display panel so that the center of the display panel, determined by the positioning component, coincides with the center of the support platform, or... Trigger the sensor on the positioning component, move the positioning component, and wait for the indicator light on the diagonal positioning component to light up, indicating that the calibration is complete.

9. The detection method as described in claim 7, characterized in that, The step of placing the positioning component at the corner of the display panel and adjusting the positioning component so that the center of the determined display panel coincides with the preset center point on the support platform includes: Position the positioning component close to the corner of the display panel; The positioning component's position sensor measures the current position information in real time; The processing module calculates the center of the display panel based on the feedback position information, and adjusts the position of the positioning component and the display panel until the calculated center of the display panel coincides with the center of the support platform.

10. A detection method for use with a detection fixture as described in any one of claims 1-6, characterized in that, The detection method includes the following steps: Place the display panel to be tested on the support platform; The support platform is adjusted to a preset angle and locked using the adjustment components; Pass the connector of the display panel to be tested through the opening and connect it to the adapter component. Light up the display panel to be tested and perform image detection. Disconnect the circuit board and adapter of the display panel to be tested, release the positioning component from fixing the display panel, and move the display panel to be tested to a predetermined position.

Images