Display module testing device

Abstract

This utility model discloses a display module testing device, including a first detection mechanism, a second detection mechanism, a driving mechanism, and a testing mechanism, used to perform touch detection tasks on the display module under test. The display module testing device achieves single-point touch detection through the first detection mechanism and multi-point touch detection through the second detection mechanism, and utilizes the driving mechanism to coordinate the movement and switching between the two. The testing mechanism is responsible for collecting and processing touch feedback data. This display module testing device, by splitting the touch detection task into single-point and multi-point touch detection tasks, and through the collaborative work of the first and second detection mechanisms, completes multiple touch detection tasks more efficiently, enabling the same device to adapt to different touch detection task requirements. This overcomes the limitations of traditional devices with single-function operation and meets the needs of large-scale production.

Description

Technical Field

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

[0002] With the widespread application of display technology, performance testing of display modules has become an indispensable part of the production process. Common display module testing, especially for modules requiring touch functionality, typically involves using a stylus to perform multiple touch detection tasks on the module under test to verify its touch sensitivity and accuracy. However, this common technique has the following problems:

[0003] Common display module testing devices use a stylus to perform multiple touch detection tasks on the display module sequentially, resulting in low test throughput and long test time.

[0004] Some testing equipment cannot meet the needs of various touch detection tasks, so it is necessary to equip a pipeline and switch between multiple testing equipment, which further reduces testing efficiency.

[0005] In addition, the testing equipment has a single function, and when different testing equipment test the same display module separately, the errors between the equipment make it difficult to guarantee the accuracy and consistency of the test results.

[0006] Therefore, commonly used technologies cannot meet the needs of large-scale testing and production of display modules. Summary of the Invention

[0007] To address the problem of low testing efficiency for display modules in commonly used technologies, the purpose of this invention is to provide a high-efficiency display module testing device.

[0008] To achieve the above-mentioned objectives, one embodiment of this utility model provides a display module testing device, comprising:

[0009] The first testing mechanism includes a first stylus, with at least one first stylus corresponding to each testing station. The first testing mechanism is used to perform single-point touch testing on the display module under test.

[0010] The second testing mechanism includes a second stylus, with multiple second styluses corresponding to each testing station. The second testing mechanism is used to perform multi-point touch testing on the display module under test.

[0011] A driving mechanism drives the first detection mechanism and the second detection mechanism to perform touch detection tasks, and switches between the first detection mechanism and the second detection mechanism to adapt to the needs of different touch detection tasks;

[0012] The testing organization acquires touch feedback data generated when the first stylus or the second stylus performs a touch detection task on the display module under test.

[0013] As a further improvement of this utility model, the display module testing device has multiple test stations, at least one set of the first detection mechanism and multiple sets of the second detection mechanism. The number of test stations corresponds to the number of the first styluses, and each test station corresponds to one first stylus and one second detection mechanism.

[0014] As a further improvement of this utility model, the driving mechanism includes a longitudinal driving module and a movable frame. The longitudinal driving module drives the movable frame to move longitudinally. The movable frame carries the first detection mechanism and multiple sets of second detection mechanisms to realize the switching between the first detection mechanism and the second detection mechanism.

[0015] As a further improvement of this utility model, the first detection mechanism simultaneously drives all the first styluses to perform single-point touch detection tasks on the display module under test;

[0016] The multiple groups of the second testing institutions are independently controlled.

[0017] As a further improvement of this utility model, the first detection mechanism includes a horizontal drive module, a first lifting module and a first crossbeam, and multiple first styluses are fixed on the first crossbeam;

[0018] The horizontal drive module, the vertical drive module, and the first lifting module work together to drive the first crossbeam to move, so that all the first styluses perform single-point touch detection tasks on each display module under test along the same trajectory.

[0019] As a further improvement of this utility model, each of the second detection mechanisms includes a second lifting module, a rotating module, and a second crossbeam. Multiple second styluses are fixed on the second crossbeam, and the centers of the multiple second styluses coincide with the rotation axis of the rotating module.

[0020] The longitudinal drive module, the second lifting module, and the rotation module work together to drive the second crossbeam to move or rotate around the rotation axis, so that the second stylus on the second crossbeam can perform multi-touch detection tasks on each display module under test.

[0021] As a further improvement of this utility model, the display module testing device further includes a frame, an upper carrier, and a lower carrier. The frame carries the upper carrier and the lower carrier in the vertical direction, respectively. The display module to be tested includes a first display module and a second display module. The first display module is fixed in the upper carrier, and the second display module is fixed in the lower carrier.

[0022] The first display module is smaller than the second display module, the upper vehicle is provided with multiple sets, and the lower vehicle is provided with one set.

[0023] As a further improvement of this utility model, the display module testing device further includes an upper guide rail, an upper support, a lower guide rail, and a lower support, wherein the upper guide rail and the lower guide rail both extend longitudinally;

[0024] Multiple sets of the upper-level carriers are fixed to the upper-level support, and the upper-level support is slidably connected to the upper-level guide rail;

[0025] The lower carrier is fixed to the lower support, and the lower support is slidably connected to the lower guide rail.

[0026] As a further improvement of this utility model, both the first stylus and the second stylus are equipped with pressure sensors. The pressure sensors detect the contact pressure between the first stylus or the second stylus and the surface of the display module under test in real time, so as to adjust the distance between the first stylus or the second stylus and the display module under test according to the contact pressure.

[0027] As a further improvement of this utility model, the single-point touch detection task includes drawing lines, circles, or polygons.

[0028] The multi-touch detection task includes a dot-mapping task.

[0029] Compared with commonly used technologies, this utility model has the following beneficial effects: This display module testing device divides the touch detection task into single-point touch detection task and multi-point touch detection task. The single-point touch detection task is performed by at least one first stylus of the first detection mechanism, and the multi-point touch detection task is performed by multiple second styluses of the second detection mechanism. Through the coordinated work of the first and second detection mechanisms, combined with the switching function of the drive mechanism and the data acquisition function of the testing mechanism, multiple touch detection tasks can be completed more efficiently. Moreover, the same device can adapt to different touch detection task requirements, overcome the limitation of the single function of traditional devices, greatly improve the test throughput, and ensure the accuracy and consistency of test results when the same testing device completes various tests, meeting the needs of large-scale production. Attached Figure Description

[0030] Figure 1 This is a schematic diagram of the structure of a display module testing device according to an embodiment of the present invention;

[0031] Figure 2 This is a front view of the upper test structure of a display module testing device according to an embodiment of the present invention;

[0032] Figure 3 This is a rear view of the upper test structure of a display module testing device according to an embodiment of the present invention;

[0033] Figure 4 This is a schematic diagram of the structure of the second detection mechanism according to an embodiment of the present invention;

[0034] Figure 5 This is a schematic diagram of the upper carrier of a display module testing device according to an embodiment of the present invention;

[0035] Figure 6 This is a front view of the lower test structure of a display module testing device according to an embodiment of the present invention;

[0036] Figure 7 This is a rear view of the lower test structure of a display module testing device according to an embodiment of the present invention;

[0037] Among them, 100 is a display module testing device; 10 is a first detection mechanism; 11 is a first stylus; 111 is a pressure sensor; 12 is a horizontal drive module; 13 is a first lifting module; 14 is a first crossbeam; 20 is a second detection mechanism; 21 is a second stylus; 22 is a second lifting module; 23 is a rotation module; 24 is a second crossbeam; 30 is a drive mechanism; 31 is a longitudinal drive module; 32 is a movable frame; 40 is a frame; 41 is an upper guide rail; 42 is an upper support; 43 is an upper carrier; 44 is a lower guide rail; 45 is a lower support; 46 is a lower carrier; 50 is a display module under test; 51 is a first display module; and 52 is a second display module. Detailed Implementation

[0038] The present invention will now be described in detail with reference to the specific embodiments shown in the accompanying drawings. However, these embodiments do not limit the present invention, and any structural, methodological, or functional modifications made by those skilled in the art based on these embodiments are included within the protection scope of the present invention.

[0039] It should be understood that terms such as “above,” “over,” “below,” and “under” used herein to indicate spatial relative position are for illustrative purposes to describe the relationship of one mechanism or feature relative to another mechanism or feature as shown in the accompanying drawings. The terms “spatial relative position” may be intended to include different orientations of the equipment in use or operation other than those shown in the figures.

[0040] One embodiment of this utility model provides a display module testing device, which solves the problems of low testing efficiency and limited functionality of commonly used display module testing devices.

[0041] The display module testing device in this embodiment is as follows: Figure 1 As shown, the device includes a first detection mechanism, a second detection mechanism, a driving mechanism, and a testing mechanism, used to perform touch detection tasks on the display module under test. The display module in this embodiment is preferably a touchscreen with touch functionality, allowing human-computer interaction through touch operations such as dotting, drawing lines, and zooming. The display module testing device performs single-point touch detection through the first detection mechanism and multi-point touch detection through the second detection mechanism, coordinating the movement and switching between the two using the driving mechanism. The testing mechanism is responsible for collecting and processing touch feedback data. The implementation methods and technical effects of each technical feature are described below.

[0042] This embodiment of the display module testing device addresses the shortcomings of traditional display module testing, namely low efficiency and limited functionality. It breaks down touch detection tasks into single-point touch detection tasks and multi-point touch detection tasks, which are efficiently executed by at least one first stylus from a first detection mechanism and multiple second styluses from a second detection mechanism, respectively. Traditional testing devices often use a single stylus, making it difficult to balance the high precision of single-point sliding detection with the high efficiency of multi-point touch detection. For example, multiple styluses may not meet the requirements of a single sliding trajectory. This embodiment achieves task differentiation and optimization by having the first detection mechanism focus on single-point touch tasks (such as drawing lines or circles) and the second detection mechanism focus on multi-point touch tasks (such as dotting), significantly improving testing efficiency and functional adaptability, and providing an efficient and flexible testing solution for the display module manufacturing industry.

[0043] like Figure 2 As shown, the first testing mechanism includes a first stylus, and each testing station corresponds to at least one first stylus. The first testing mechanism is used to perform single-point touch testing on the display module under test.

[0044] In this embodiment, the device is equipped with one or more test stations, each station being used to fix one display module under test. Taking one first stylus corresponding to each test station as an example, for instance, if there are three test stations, the first detection mechanism includes three first styluses, each first stylus corresponding to one display module under test. The first stylus is fixed to the support structure (e.g., a crossbeam) of the first detection mechanism and moves along a predetermined trajectory driven by a drive mechanism.

[0045] The first stylus is made of high-precision touch material and can simulate the touch actions of a human finger, such as swiping and tapping on the surface of the display module to test the response sensitivity and trajectory accuracy of the touch point. In specific operation, the first testing mechanism receives test parameters (such as line path, speed, and contact frequency) through the control system, and drives the first stylus to perform single-point touch actions on the surface of the display module under test to verify whether the single-point touch function of the display module is normal.

[0046] The second testing mechanism includes a second stylus, with multiple second styluses corresponding to each testing station. The second testing mechanism is used to perform multi-touch testing on the display module under test.

[0047] The second stylus also uses high-precision touch material. Multiple second styluses are simultaneously fixed to the support structure of the second detection mechanism (such as a rotation or translation mechanism). The second detection mechanism is used to perform multi-point touch detection tasks, such as simultaneously touching multiple positions on the surface of the display module to test the multi-point recognition capability and response consistency of the display module.

[0048] In this embodiment, the touch detection task is divided into single-point touch detection task and multi-point touch detection task. For example, the single-point touch detection task includes drawing lines, circles or polygons, which is performed by a single first stylus of the first detection mechanism; the multi-point touch detection task includes dot marking task, which is performed by multiple second styluses of the second detection mechanism.

[0049] In the single-point touch detection task, the line drawing task involves the first stylus moving along a straight path on the surface of the display module under test to test the continuous response capability of the touch point. The circle drawing task requires the first stylus to move along a circular trajectory to verify the curve recognition accuracy of the display module. The polygon drawing task involves moving along multiple polyline paths (such as rectangles or pentagons) to test the display module's response to complex trajectories. The control system generates single-point touch commands based on the test parameters (such as path coordinates and speed) input from the human-computer interaction system, driving the first stylus to perform the above tasks, with adjustable movement speed.

[0050] In the multi-touch detection task, multiple second styluses (e.g., three) simultaneously perform touch actions at specific locations on the surface of the display module under test. For example, they simultaneously click on three predetermined points on the display module to test the multi-touch recognition capability of the display module. The control system generates multi-touch commands based on test parameters (such as touch point coordinates and click frequency) to drive the second styluses to perform the dotting action.

[0051] Although the first stylus can also complete the dotting task, its efficiency is relatively low because it can only touch one point at a time. In this embodiment, the dotting task is separated from multiple test tasks and completed by the second detection mechanism. Taking the simultaneous dotting of three second styluses as an example, the efficiency is increased to 3 times.

[0052] The driving mechanism drives the first and second detection mechanisms to perform touch detection tasks and switches between the first and second detection mechanisms to adapt to the needs of different touch detection tasks.

[0053] The drive mechanism uses a motor or cylinder as a power source to drive the movement of the first and second styluses via transmission components (such as a lead screw or belt). During testing, the control system switches between the first and second detection mechanisms according to testing requirements (such as single-point or multi-point detection). For example, when single-point touch detection is required, the drive mechanism moves the first detection mechanism to the test station; when switching to multi-point touch detection, the drive mechanism moves the first detection mechanism away and moves the second detection mechanism to the test station.

[0054] The testing organization acquires touch feedback data generated when the first or second stylus performs touch detection tasks on the display module under test.

[0055] The testing mechanism is used to collect and process touch feedback data generated when a first or second stylus performs touch detection tasks on the display module under test. In this embodiment, the testing mechanism includes a data acquisition module, a data processing module, and a communication interface. The data acquisition module, through an electrical connection with the display module under test, acquires the response data of the display module in real time during the touch detection process, such as the coordinates of the touch point, response time, and touch intensity. The data processing module uses an embedded processor or host computer software to analyze the collected touch feedback data, such as comparing the deviation between the actual touch point coordinates and the expected trajectory to determine the sensitivity and accuracy of the display module. The communication interface transmits the processed data to a host computer or human-computer interaction system for displaying test results or storing test records.

[0056] In practice, when the first stylus performs a single-point drawing task, the testing organization records the response trajectory of the display module and analyzes its continuity; when the second stylus performs a multi-point touch task, the testing organization collects synchronous response data of multiple touch points to verify the accuracy of multi-point recognition.

[0057] The display module testing device in this embodiment achieves single-point touch and multi-point touch testing tasks by functionally distinguishing between the first and second testing mechanisms. Combined with the switching function of the drive mechanism and the data acquisition and processing capabilities of the testing mechanism, it can adapt to various display module testing needs without changing equipment or making complex adjustments, greatly improving testing efficiency. Moreover, by collecting and analyzing various touch feedback data in real time on the same device, the testing mechanism ensures the accuracy and consistency of test results.

[0058] In one embodiment, such as Figure 1-3As shown, the display module testing device has multiple test stations, at least one set of first testing mechanisms, and multiple sets of second testing mechanisms. The number of test stations corresponds to the number of first styluses, and each test station corresponds to one first stylus and one second testing mechanism.

[0059] Multiple test stations each have a fixed display module to be tested, enabling synchronous testing. For example... Figure 1 The upper test structure of the display module testing device has three test stations, each with a fixture holding a display module (such as a smartphone or tablet display module) to be tested. The first testing mechanism is configured as a set. For each of the three test stations, the first testing mechanism includes three first styluses, each corresponding to one test station, used to perform single-point touch testing tasks (such as line drawing tests). Each stylus acts independently on its corresponding display module.

[0060] The second testing mechanism is configured in multiple groups, specifically three groups, each corresponding to one testing station. Each group of the second testing mechanism includes multiple second styluses (e.g., Figure 3 The three lines in the middle are used to perform multi-touch detection tasks (such as dotting).

[0061] In this embodiment, the number of test stations (three), the number of first styluses (three), and the number of second detection mechanisms (three sets) correspond to each test station, with each test station corresponding to one first stylus and one set of second detection mechanisms. For example, during the testing process, the display module of station 1 may undergo single-point line drawing testing using one first stylus, or multi-point touch testing using one set of second detection mechanisms (three second styluses). This configuration ensures that each station can independently complete single-point and multi-point testing tasks.

[0062] This embodiment achieves synchronous touch detection at multiple workstations by setting up multiple test stations and matching them with a corresponding number of first styluses and second detection mechanisms, significantly improving testing efficiency. For example, a configuration of three test stations can simultaneously test three display modules, increasing the testing throughput by three times compared to traditional single-station devices and significantly optimizing production efficiency.

[0063] like Figure 1-3 As shown, the driving mechanism includes a longitudinal driving module and a movable frame. The longitudinal driving module drives the movable frame to move longitudinally. The movable frame carries the first detection mechanism and multiple sets of second detection mechanisms to realize the switching between the first detection mechanism and the second detection mechanism.

[0064] To clearly express the positions and directions described in this embodiment, multiple test stations are defined and arranged sequentially along the left and right directions. The first stylus and the second stylus touch the test display module from top to bottom. The two sides of the plane containing the top, bottom, left and right are the front and back sides, respectively. The left and right directions can be used as the X-axis direction, the front and back directions can be used as the Y-axis direction, and the top and bottom directions can be used as the Z-axis direction.

[0065] In this embodiment, the first detection mechanism is installed on the front side of the movable frame, and the second detection mechanism is installed on the rear side of the movable frame. The corresponding directions (up, down, front, back, left, right) can also be referred to... Figure 1 and Figure 2 In the following text, the vertical direction is front-to-back, and the horizontal direction is left-to-right.

[0066] In this embodiment, one set of longitudinal drive modules is arranged in each of the left and right directions, with a movable frame spanning between the left and right longitudinal drive modules. The movable frame serves as the main load-bearing structure for the first detection mechanism and multiple sets of second detection mechanisms. The longitudinal drive module consists of a servo motor, a ball screw, and a linear guide rail, enabling the movable frame to move precisely along the longitudinal direction (front-back direction) on the guide rail.

[0067] During testing, the control system adjusts the position of the movable frame according to testing requirements (such as single-point or multi-point detection). For example, when performing single-point touch detection, the longitudinal drive module moves the movable frame to the position where the first detection mechanism aligns with the workstation under test; when switching to multi-point touch detection, the longitudinal drive module moves the movable frame forward, thus moving the second detection mechanism, located at the rear, forward to the alignment position. Additionally, the longitudinal drive module also controls the forward and backward movement of the first and second styluses relative to the display module under test.

[0068] In one embodiment, the first detection mechanism simultaneously drives all the first styluses to perform single-point touch detection tasks on the display module under test; multiple groups of second detection mechanisms are controlled independently of each other.

[0069] All primary styluses (e.g., three, corresponding to three test stations) are fixed to the same support structure (such as a crossbeam) and move along the same trajectory. For example, when performing a circle drawing task, the three primary styluses simultaneously draw circles on the three display modules under test, and the actions of all primary styluses are consistent. Within the same test cycle, a single display module testing device can simultaneously complete single-point testing at multiple stations, shortening the testing time and significantly improving production efficiency and testing flexibility.

[0070] Each group of second testing mechanisms is independently controlled by a separate drive unit. For each workstation under test, the actions of each group of second testing mechanisms do not interfere with each other, and they perform multi-touch tests on the corresponding display module, such as simulating three-point clicks to test multi-point recognition capabilities.

[0071] Because this display module testing device breaks down the touch detection task into single-point touch detection and multi-point touch detection tasks, it can achieve synchronous testing and independent control of multiple display modules under test. The synchronous testing of the first testing mechanism improves testing efficiency, and the independent control of the second testing mechanism meets the personalized testing needs of each screen, significantly improving production efficiency and testing flexibility.

[0072] like Figure 2 As shown, the first detection mechanism includes a horizontal drive module, a first lifting module, and a first crossbeam. Multiple first styluses are fixed on the first crossbeam. The horizontal drive module, the vertical drive module, and the first lifting module work together to drive the first crossbeam to move, so that all the first styluses perform single-point touch detection tasks on each display module under test along the same trajectory.

[0073] The horizontal drive module drives the first lifting module to move in the left and right direction, and the first lifting module drives the first crossbeam to move in the up and down direction. Multiple first styluses, such as three first styluses, are fixed on the first crossbeam, preferably arranged at equal intervals.

[0074] At the start of the test, the first lifting module drives the first crossbeam to descend, bringing the first stylus close to the surface of the display module under test. Subsequently, the horizontal drive module and the vertical drive module work together to drive the first crossbeam to move in the XY plane, so that all the first styluses perform single-point touch detection tasks on each display module under test along the same trajectory (such as a straight line or a curve).

[0075] like Figure 3 and 4 As shown, each second detection mechanism includes a second lifting module, a rotating module, and a second crossbeam. Multiple second styluses are fixed on the second crossbeam, and the centers of the multiple second styluses coincide with the rotation axis of the rotating module. The longitudinal drive module, the second lifting module, and the rotating module work together to drive the second crossbeam to move or rotate around the rotation axis, so that the second styluses on the second crossbeam can perform multi-point touch detection tasks on each display module under test.

[0076] Multiple second styluses are arranged at equal intervals on the second crossbeam. Taking three styluses as an example, the center point of the middle stylus coincides with the rotation axis to ensure uniform distribution of touch points during rotation. The rotation module consists of a high-precision servo motor and a rotation axis, driving the second crossbeam to rotate around the rotation axis.

[0077] During testing, the control system coordinates the operation of the longitudinal drive module, the second lifting module, and the rotation module based on test parameters (such as multi-touch point positions and rotation angles). At the start of the test, the second lifting module drives the second crossbeam to descend, bringing the second stylus closer to the display module surface. Subsequently, the longitudinal drive module adjusts the Y-axis position of the second crossbeam, and the rotation module drives the second crossbeam to rotate around its rotation axis, allowing multiple second styluses to perform multi-touch tasks on the display module surface, such as simulating two-finger rotation or multi-tap clicking, to test the display module's multi-touch recognition capability and response consistency.

[0078] like Figure 2 , 4 As shown, both the first stylus and the second stylus are equipped with pressure sensors. The pressure sensors detect the contact pressure between the first stylus or the second stylus and the surface of the display module under test in real time, so as to adjust the distance between the first stylus or the second stylus and the display module under test according to the contact pressure.

[0079] The first and second styluses have embedded miniature pressure sensors, such as thin-film pressure sensors, which are connected to the control system via wires to transmit contact pressure data in real time.

[0080] Before the test begins, the first or second lifting module descends rapidly, then switches to a slow descent when it is about 1 cm away from the product surface. When the stylus touches the product surface, the pressure sensor inside the stylus feeds back the pressure value between the stylus and the product surface to the control system. When the pressure value reaches the set value, the control system stops the lifting module from descending, and the current height of the first or second lifting module is taken as the test working height.

[0081] During testing, the operation height can be set as described above, or it can be adjusted in real time. For example, if the pressure sensor of the first stylus detects that the contact pressure is below a threshold, the control system drives the lifting module to lower the height of the first stylus until the pressure reaches the set value; if the pressure is too high, the lifting module raises the stylus. Similarly, when the second stylus performs multi-touch tasks, the pressure sensor ensures that the contact pressure of each second stylus is consistent, avoiding false triggering due to pressure differences.

[0082] In this embodiment, the pressure sensor works in conjunction with the lifting modules of the first and second detection mechanisms to control the dynamic adjustment of the Z-axis height of each stylus, ensuring the efficiency and accuracy of synchronous testing, which is suitable for high-precision display module production scenarios.

[0083] like Figure 1 , 5As shown in Figures 6 and 7, the display module testing device of this embodiment includes an upper testing structure and a lower testing structure. Both the upper and lower layers are equipped with a first detection mechanism and a second detection mechanism, which respectively test different display modules. The upper testing structure is shown below. Figure 1 , 2 As shown in Figures 3 and 5, the lower-level test structure is as follows: Figure 1 , 6 As shown in Figures 7 and 8.

[0084] The display module testing device also includes a frame, an upper carrier, and a lower carrier. The frame carries the upper and lower carriers in the vertical direction. The display module under test includes a first display module and a second display module. The first display module is fixed in the upper carrier, and the second display module is fixed in the lower carrier. The first display module is smaller than the second display module. The upper carrier has multiple modules, and the lower carrier has one module.

[0085] The frame is designed with a two-layer support structure along the vertical direction. The upper layer supports multiple sets of upper-level carriers, and the lower layer supports one set of lower-level carriers. The upper-level carriers are multiple independent units, such as three sets, and each set of upper-level carriers fixes a first display module under test to a fixture. The lower-level carrier is a single unit, which fixes a second display module under test to a fixture.

[0086] The first display module is a small-to-medium-sized display module, such as a 4-20 inch small-to-medium-sized display module. The second display module is a large-sized display module (such as a 20-50 inch large-sized display module). During testing, the upper and lower carriers respectively carry the small-to-medium-sized and large-sized display modules and are fixed to the corresponding layers of the rack.

[0087] In this way, a single display module testing device enables simultaneous testing of display modules of different specifications, significantly improving the device's adaptability and testing efficiency. Multiple upper-level carriers support the simultaneous testing of multiple small-to-medium-sized display modules; for example, three upper-level carriers can simultaneously fix three mobile phone display modules, tripling the testing throughput. The single-unit design of the lower-level carrier is adapted to large-sized display modules, meeting the testing requirements of large display modules. Furthermore, the optimized upper-to-lower-level structure maximizes space utilization, enabling the device to simultaneously test small-to-medium-sized and large-sized display modules within a limited space, significantly improving the testing efficiency of various display modules and making it suitable for diverse display module production scenarios.

[0088] like Figure 1 , 5 As shown in Figure 7, the display module testing device also includes an upper guide rail, an upper support, a lower guide rail, and a lower support. Both the upper and lower guide rails extend longitudinally. Multiple upper carriers are fixed to the upper support, and the upper support is slidably connected to the upper guide rail. The lower carrier is fixed to the lower support, and the lower support is slidably connected to the lower guide rail.

[0089] Both the upper and lower guide rails are high-precision linear guides, extending longitudinally (Y-axis) and fixed to the upper and lower layers of the frame, respectively. The upper guide rail consists of multiple parallel high-strength steel rails, and a slider is provided at the bottom of the upper support for sliding connection with the upper guide rail. Before testing, first... Figure 1 The upper support is pulled forward, and after fixing a small to medium-sized first display module in each upper carrier, the upper support is pushed back to the test position. The structure and operation of the lower guide rail and lower support are the same as the upper one.

[0090] To improve space utilization, the first and second testing mechanisms on the upper level are located near the rear, while those on the lower level are located near the front. After the first display module is loaded onto the upper carrier, the upper support is pushed back to the testing position; after the second display module is loaded onto the lower carrier, the lower support is moved forward to the testing position.

[0091] like Figure 1 As shown, in this embodiment, the upper layer tests three display modules. The upper first detection mechanism is equipped with three first styluses, that is, the upper first detection mechanism is connected to the three first styluses by a first crossbeam. The upper second detection mechanism is set up in three groups, and each group of the second detection mechanism is equipped with three second styluses.

[0092] Since only one display module is tested in the lower layer, the first detection mechanism in the lower layer is equipped with one first stylus, meaning that the first detection mechanism in the lower layer does not have a first crossbeam. The second detection mechanism in the lower layer is set up as a group, and the group of second detection mechanisms is equipped with three second styluses.

[0093] This embodiment significantly improves testing efficiency and adaptability through the configuration of upper guide rails, upper supports, upper carriers, lower guide rails, lower supports, and lower carriers. The upper support supports the synchronous positioning of multiple sets of upper carriers; for example, three sets of upper carriers can simultaneously adjust the position of three small-to-medium-sized display modules, tripling the testing throughput. The lower support supports the positioning of a single lower carrier, adapting to large-sized display modules and meeting diverse testing needs. Furthermore, the modular design of the guide rail system facilitates expansion; for example, the number of upper carriers can be increased to support more workstations, enhancing the versatility and production flexibility of the device.

[0094] Compared with commonly used technologies, this embodiment has the following advantages:

[0095] This display module testing device breaks down touch detection tasks into single-point touch detection tasks and multi-point touch detection tasks. Single-point touch detection tasks are performed using at least one first stylus from the first detection mechanism, while multi-point touch detection tasks are performed using multiple second styluses from the second detection mechanism. Through the collaborative work of the first and second detection mechanisms, combined with the switching function of the drive mechanism and the data acquisition function of the testing mechanism, multiple touch detection tasks can be completed more efficiently. Furthermore, the same device can adapt to different touch detection task requirements, overcoming the limitations of traditional devices with single functions, significantly improving test throughput, and ensuring the accuracy and consistency of test results when the same testing device completes various tests, meeting the needs of large-scale production.

[0096] It should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This way of describing the specification is only for clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

[0097] The detailed descriptions listed above are merely specific descriptions of feasible implementations of this utility model, and are not intended to limit the scope of protection of this utility model. All equivalent implementations or modifications made without departing from the spirit of this utility model should be included within the scope of protection of this utility model.

Claims

1. A display module testing device, characterized in that, include: The first testing mechanism includes a first stylus, with at least one first stylus corresponding to each testing station. The first testing mechanism is used to perform single-point touch testing on the display module under test. The second testing mechanism includes a second stylus, with multiple second styluses corresponding to each test station. The second testing mechanism is used to perform multi-point touch testing on the display module under test. A driving mechanism drives the first detection mechanism and the second detection mechanism to perform touch detection tasks, and switches between the first detection mechanism and the second detection mechanism to adapt to the needs of different touch detection tasks; The testing organization acquires touch feedback data generated when the first stylus or the second stylus performs a touch detection task on the display module under test.

2. The display module testing device according to claim 1, characterized in that, The display module testing device has multiple test stations. The first detection mechanism is set in at least one group, and the second detection mechanism is set in multiple groups. The number of test stations corresponds to the number of the first styluses. Each test station corresponds to one first stylus and one second detection mechanism.

3. The display module testing device according to claim 2, characterized in that, The driving mechanism includes a longitudinal driving module and a movable frame. The longitudinal driving module drives the movable frame to move longitudinally. The movable frame carries the first detection mechanism and multiple sets of second detection mechanisms to realize the switching between the first detection mechanism and the second detection mechanism.

4. The display module testing device according to claim 3, characterized in that, The first detection mechanism simultaneously drives all the first styluses to perform single-point touch detection tasks on the display module under test; The multiple groups of the second testing institutions are independently controlled.

5. The display module testing device according to claim 4, characterized in that, The first detection mechanism includes a horizontal drive module, a first lifting module and a first crossbeam, with multiple first styluses fixed on the first crossbeam; The horizontal drive module, the vertical drive module, and the first lifting module work together to drive the first crossbeam to move, so that all the first styluses perform single-point touch detection tasks on each display module under test along the same trajectory.

6. The display module testing device according to claim 4, characterized in that, Each of the second detection mechanisms includes a second lifting module, a rotating module, and a second crossbeam. Multiple second styluses are fixed on the second crossbeam, and the centers of the multiple second styluses coincide with the rotation axis of the rotating module. The longitudinal drive module, the second lifting module, and the rotation module work together to drive the second crossbeam to move or rotate around the rotation axis, so that the second stylus on the second crossbeam can perform multi-touch detection tasks on each display module under test.

7. The display module testing device according to claim 1, characterized in that, The display module testing device further includes a frame, an upper carrier, and a lower carrier. The frame carries the upper carrier and the lower carrier in the vertical direction. The display module to be tested includes a first display module and a second display module. The first display module is fixed in the upper carrier, and the second display module is fixed in the lower carrier. The first display module is smaller than the second display module. The upper vehicle has multiple sets of the first display module, and the lower vehicle has one set.

8. The display module testing device according to claim 7, characterized in that, The display module testing device also includes an upper guide rail, an upper support, a lower guide rail, and a lower support, wherein both the upper guide rail and the lower guide rail extend longitudinally; Multiple sets of the upper-level carriers are fixed to the upper-level support, and the upper-level support is slidably connected to the upper-level guide rail; The lower carrier is fixed to the lower support, and the lower support is slidably connected to the lower guide rail.

9. The display module testing device according to claim 1, characterized in that, Both the first stylus and the second stylus are equipped with pressure sensors. The pressure sensors detect the contact pressure between the first stylus or the second stylus and the surface of the display module under test in real time, so as to adjust the distance between the first stylus or the second stylus and the display module under test according to the contact pressure.

10. The display module testing device according to claim 1, characterized in that, The single-point touch detection task includes drawing lines, circles, or polygons. The multi-touch detection task includes a dot-marking task.

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