A detection method, device and medium for 3D display modules

Abstract

This invention discloses a method, device, and medium for detecting 3D display modules. The method includes the following steps: transferring the 3D display module to a platform and powering it on; measuring and photographing the illuminance of the 3D display module through a measuring lens to obtain an illumination image; analyzing the illumination image to determine whether the 3D display patch is incorrectly pasted; if incorrectly pasted, identifying the first incorrectly pasted 3D display patch; positioning the 3D display module through a positioning lens and photographing it to obtain a positioning image; calculating the coordinates of the first 3D display patch based on the positioning image; and controlling a marking mechanism to mark the first 3D display patch based on the coordinates. This invention can automatically detect 3D display modules, accurately identify and mark incorrectly pasted 3D display patches, eliminating the need for manual inspection. It not only effectively improves detection efficiency and accuracy but also significantly increases the yield of 3D display modules and reduces production costs.

Description

Technical Field

[0001] This invention relates to the field of stereoscopic display technology, and in particular to a detection method, device and medium for three-dimensional display modules. Background Technology

[0002] Currently, LED displays are widely used in all aspects of people's work and life, bringing people a rich and colorful visual experience. Among them, 3D LED displays have attracted special attention due to their immersive experience.

[0003] In existing technologies, the methods for displaying stereoscopic images on 3D LED displays mainly fall into two categories: electronic shutter type and polarization type. The principle of a polarization-type 3D LED display is to divide all the pixels constituting the display into two equal parts. One part has a polarizing film with one polarization direction applied to its surface, while the other part has a polarizing film with the opposite polarization direction applied to its surface. When the two parts of pixels display different content, viewers wearing corresponding polarized glasses can see a realistic stereoscopic image.

[0004] However, in the production process of polarized 3D LED displays, polarizing films with different polarization directions must be cut separately, and two different polarizing films must be pasted onto the display surface separately, ensuring that they are pasted correctly. This process is extremely labor-intensive, inefficient, and consumes a great deal of manpower and resources. Especially as LED displays develop towards high density and small pitch, the number of LEDs per unit area is increasing, and the corresponding polarizing film size is also decreasing. This leads to a significant increase in the error rate of polarizing film pasting, increased inspection difficulty, and excessively high inspection costs. Existing manual inspection technology is inefficient and has a high rate of missed inspections, resulting in a significant decrease in the yield of finished products. This not only prolongs the production cycle but also further increases production costs. Summary of the Invention

[0005] This invention provides a detection method, equipment, and medium for three-dimensional display modules, which solves the problems in the production of three-dimensional LED displays. Due to the high density and small spacing of the LED beads, the error rate when pasting polarizing film on them is high, the detection of finished products is difficult and the detection cost is too high. In the existing technology, manual detection is inefficient and has a high rate of missed detection, resulting in a significant decrease in the yield rate.

[0006] To solve the above-mentioned technical problems, the present invention provides a detection method for a three-dimensional display module, comprising the following steps: transferring the three-dimensional display module to be detected to a platform and powering on the three-dimensional display module; measuring and photographing the illuminance of the three-dimensional display module through a measuring lens to obtain an illumination image; analyzing the illumination image to determine whether the three-dimensional display patch on the three-dimensional display module is incorrectly pasted; if incorrectly pasted, identifying the first incorrectly pasted three-dimensional display patch from among multiple three-dimensional display patches based on the illumination image; positioning the three-dimensional display module through a positioning lens and photographing to obtain a positioning image; calculating the coordinates of the first three-dimensional display patch based on the positioning image; and controlling a marking mechanism to mark the first three-dimensional display patch based on the coordinates of the first three-dimensional display patch.

[0007] In some embodiments, after the steps of transferring the three-dimensional display module to be tested to the platform and powering on the three-dimensional display module, the method further includes the step of: adjusting the position of the lens group so that the lens group is located directly above the three-dimensional display module; wherein, the lens group includes the measuring lens and the positioning lens; the measuring lens includes a measuring body, a conversion disk and a plurality of polarizing lenses disposed on the conversion disk; rotating the conversion disk to select the corresponding polarizing lens and placing it directly below the measuring body.

[0008] In some embodiments, the three-dimensional display patch includes a left-handed circular polarization patch and a right-handed circular polarization patch; or, the three-dimensional display patch includes a first linear polarization patch and a second linear polarization patch, wherein the polarization direction of the first linear polarization patch and the polarization direction of the second linear polarization patch form a 90-degree angle.

[0009] In some embodiments, four polarizing lenses are provided on the conversion disk, and the four polarizing lenses are of the following types: left-handed circular polarizing lens, right-handed circular polarizing lens, first linear polarizing lens and second linear polarizing lens; wherein the polarization direction of the first linear polarizing lens and the polarization direction of the second linear polarizing lens form a 90-degree angle.

[0010] In some embodiments, the left-handed and right-handed circular offset patches are evenly distributed in a checkerboard pattern on the 3D display module; or, the left-handed and right-handed circular offset patches are alternately distributed horizontally or vertically in a strip shape on the 3D display module; or, the first line offset patch and the second line offset patch are evenly distributed in a checkerboard pattern on the 3D display module; or, the first line offset patch and the second line offset patch are alternately distributed horizontally or vertically in a strip shape on the 3D display module.

[0011] In some embodiments, the method further includes the following steps: conveying the marked 3D display module out of the stage; correcting the incorrectly pasted first 3D display patch according to the markings; and curing the corrected 3D display module.

[0012] This invention also provides a testing device for a 3D display module, comprising a platform, a testing host, an electric guide rail, an operating table, a lens assembly, and a marking mechanism disposed on the platform, a power supply module and a signal source module disposed inside the platform, and a conveying mechanism disposed on the left and right sides of the platform; wherein, the lens assembly includes a measuring lens and a positioning lens; the conveying mechanism is used to convey the 3D display module; the power supply module is used to supply power to the 3D display module; the signal source module is used to provide display signals to the 3D display module; and the measuring lens is used to measure the illuminance of the 3D display module and take pictures. The system obtains an illumination image; the detection host analyzes the illumination image to determine whether the 3D display patch on the 3D display module is incorrectly pasted; if incorrectly pasted, it identifies the first incorrectly pasted 3D display patch from among the multiple 3D display patches based on the illumination image; the positioning lens positions and captures an image of the 3D display module; the detection host also calculates the coordinates of the first 3D display patch based on the positioning image; and controls the marking mechanism to mark the first 3D display patch based on its coordinates.

[0013] In some embodiments, the marking mechanism includes a swing arm, a dispensing head disposed below the front end of the swing arm, and a lifter and a rotator disposed at the rear end of the swing arm. The lifter drives the swing arm to move up and down, and the rotator drives the swing arm to rotate and swing.

[0014] In some embodiments, the measuring lens includes a measuring body, a conversion disk, and a plurality of polarizing lenses disposed on the conversion disk; the plurality of polarizing lenses are of the following types: left-handed circular polarizing lens, right-handed circular polarizing lens, first linear polarizing lens, and second linear polarizing lens; wherein the polarization direction of the first linear polarizing lens and the polarization direction of the second linear polarizing lens form a 90-degree angle.

[0015] The present invention also provides a computer-readable storage medium storing a computer program that, when executed by a processor, implements the steps of the method described above.

[0016] The beneficial effects of this invention are as follows: This invention discloses a detection method, device, and medium for three-dimensional display modules. The method includes the following steps: transferring the three-dimensional display module to be detected to a platform and powering on the three-dimensional display module; measuring and photographing the illuminance of the three-dimensional display module through a measuring lens to obtain an illumination image; analyzing the illumination image to determine whether the three-dimensional display patches on the three-dimensional display module are incorrectly pasted; if incorrectly pasted, identifying the first incorrectly pasted three-dimensional display patch from multiple three-dimensional display patches based on the illumination image; positioning the three-dimensional display module through a positioning lens and photographing to obtain a positioning image; calculating the coordinates of the first three-dimensional display patch based on the positioning image; and controlling a marking mechanism to mark the first three-dimensional display patch based on its coordinates. This invention can automatically detect processed three-dimensional display modules, accurately identify and mark incorrectly pasted three-dimensional display patches, and can quickly and accurately identify even LEDs with high density and small pitch on the three-dimensional display module without manual inspection. This not only effectively improved testing efficiency and accuracy, but also increased production efficiency, significantly improved the yield of 3D display modules, reduced production costs, and saved human resources. Attached Figure Description

[0017] Figure 1 This is a flowchart illustrating a detection method for a three-dimensional display module according to the present invention;

[0018] Figure 2 This is a schematic diagram of the structure of a detection device for a three-dimensional display module according to the present invention;

[0019] Figure 3 This is a schematic diagram of the lens assembly in a detection device for a three-dimensional display module according to the present invention;

[0020] Figure 4 This is a schematic diagram of the marking mechanism in a detection device for a three-dimensional display module according to the present invention;

[0021] Figure 5 This is a schematic diagram of the rotation of the swing arm of the marking mechanism in a detection device for a three-dimensional display module according to the present invention;

[0022] Figure 6 This is a top view of the connection of a marking mechanism in a detection device for a three-dimensional display module according to the present invention;

[0023] Figure 7 This is a schematic diagram showing the distribution of two different three-dimensional display patches on a three-dimensional display module in a detection method for a three-dimensional display module according to the present invention.

[0024] Figure 8This is a schematic diagram showing another distribution of two different three-dimensional display patches on a three-dimensional display module in a detection method for a three-dimensional display module according to the present invention;

[0025] Figure 9 This is a schematic block diagram of an embodiment of a computer-readable storage medium according to this application. Detailed Implementation

[0026] To facilitate understanding of the present invention, a more detailed description is provided below with reference to the accompanying drawings and specific embodiments. Preferred embodiments of the invention are shown in the drawings. However, the invention can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a thorough and complete understanding of the disclosure of the invention.

[0027] It should be noted that, unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used in this specification is for the purpose of describing particular embodiments only and is not intended to limit the invention. The term "and / or" as used in this specification includes any and all combinations of one or more of the associated listed items.

[0028] Figure 1 The flowchart illustrating the detection method for a 3D display module provided in this application is shown, including the following steps:

[0029] S1: Transfer the 3D display module to be tested to the platform and power on the 3D display module.

[0030] S2: The illumination of the 3D display module is measured and photographed through the measuring lens to obtain an illumination image.

[0031] S3: Analyze the lighting image to determine if the 3D display patch on the 3D display module is pasted incorrectly; if it is pasted incorrectly, identify the first 3D display patch that is pasted incorrectly from among multiple 3D display patches based on the lighting image.

[0032] S4: Position and capture images of the 3D display module using a positioning lens to obtain positioning images; calculate the coordinates of the first 3D display patch based on the positioning images.

[0033] S5: Based on the coordinates of the first three-dimensional display patch, control the marking mechanism to mark the first three-dimensional display patch.

[0034] This invention enables automatic inspection of processed 3D display modules, accurately identifying and marking incorrectly pasted 3D display patches. Even with high-density, small-pitch LEDs on the 3D display module, it can quickly and accurately identify errors without manual inspection. This not only effectively improves inspection efficiency and accuracy but also increases production efficiency, significantly improving the yield of finished 3D display modules, reducing production costs, and saving human resources.

[0035] The following is combined Figures 1 to 9 The present application will be further described in detail with reference to specific embodiments.

[0036] like Figure 1 As shown in the embodiments of this application, the detection method for a three-dimensional display module is described in detail below:

[0037] S1: Transfer the 3D display module to be tested to the platform and power on the 3D display module.

[0038] It should be noted that the detection method for 3D display modules provided in this application is achieved through methods such as... Figure 2 The detection equipment shown is used to achieve this. The detection equipment includes a platform 1, a detection host 2, an electric guide rail 3, an operating table 4, a lens group 5, a marking mechanism 6, a power supply module and a signal source module installed inside the platform 1, and a conveying mechanism 7 installed on the left and right sides of the platform 1.

[0039] The 3D display module 8 includes multiple LED beads and a 3D display patch adhered to each LED bead. In this embodiment, combined with... Figure 7 , Figure 8 As shown, the 3D display patch includes a left-handed circular offset patch 81 and a right-handed circular offset patch 82. These two different types of 3D display patches can be used as follows... Figure 7 As shown, it is evenly distributed in a checkerboard pattern; it can also be as follows: Figure 8 The distribution is shown as alternating horizontal stripes (or alternating vertical stripes, not shown in the figure).

[0040] In some other embodiments, the 3D display patch includes a first linear polarization patch and a second linear polarization patch. The polarization direction of the first linear polarization patch and the polarization direction of the second linear polarization patch form a 90-degree angle. When the polarization directions of the first linear polarization patch and the second linear polarization patch form a 90-degree angle with each other, it produces the same visual effect as the left-hand circular polarization patch 81 and the right-hand circular polarization patch 82 described above. Specifically, the first linear polarization patch is a left-hand 45-degree linear polarization patch, and the second linear polarization patch is a right-hand 45-degree linear polarization patch. The distribution of the first linear polarization patch and the second linear polarization patch on the 3D display module 8 can refer to the distribution of the left-hand circular polarization patch 81 and the right-hand circular polarization patch 82 described above, and will not be repeated here.

[0041] The method of this application first requires the completed and inspected 3D display module 8 to be transferred to the platform 1 via the conveying mechanism 7 on the left side of the platform 1. Specifically, the 3D display module 8 is first transferred to the operating table 4, and the operating table 4 is moved below the lens group 5 via the electric guide rail 3. Next, the 3D display module 8 is powered on, and the power module and signal source module inside the platform 1 are connected to the power interface and signal source interface of the 3D display module 8 respectively via power lines and signal lines.

[0042] The power supply module supplies power to the 3D display module 8; the signal source module provides display signals to the 3D display module 8, allowing it to display different images depending on the displayed signals. For example... Figure 8 As shown, a display signal is input via the signal line (this display signal is set to illuminate the LEDs in odd-numbered rows and de-illuminate the LEDs in even-numbered rows), then... Figure 8 The light emitted by the LEDs in the odd-numbered rows is polarized after passing through the upper right-handed circular polarization patch 82; while the LEDs in the even-numbered rows are not lit, and their light passes through the upper left-handed circular polarization patch 81, thus not emitting polarized light and appearing black. For example, as... Figure 8 As shown, if another display signal is input via the signal line (this display signal is set to illuminate both the LEDs in the odd-numbered rows and the LEDs in the even-numbered rows), then... Figure 8 The light emitted by the LEDs in the odd-numbered rows is polarized after passing through the upper right-handed circular polarization patch 82; while the light emitted by the LEDs in the even-numbered rows is also polarized after passing through the upper left-handed circular polarization patch 81. For example, as... Figure 8 As shown, another display signal is input via the signal line (this display signal is set to make the LEDs in odd-numbered rows emit white light, while the LEDs in even-numbered rows emit red light), then... Figure 8 The white light emitted by the LEDs in the odd-numbered rows passes through the upper right-handed circular polarization patch 82 and emits corresponding white polarized light; while the red light emitted by the LEDs in the even-numbered rows passes through the upper left-handed circular polarization patch 81 and also emits corresponding red polarized light. In other embodiments, depending on different display signals, the corresponding LEDs can be controlled to not emit light, emit light of a corresponding color, or emit light of a corresponding pattern. The display signals of this application can be set one or more differently as needed, so that the three-dimensional display module 8 has different display effects.

[0043] After the 3D display module 8 is powered on, its LED beads are lit according to the set display signal, displaying the corresponding image. It emits different polarized light (or does not emit light) through the 3D display patch. Furthermore, the 3D display module 8 is fixed in place by the fixtures on the operating table 4 to prevent shaking during detection and ensure accuracy.

[0044] Furthermore, the position of lens group 5 is adjusted so that it is directly above the 3D display module 8, thereby further improving the accuracy of the shooting by lens group 5.

[0045] Specifically, in combination Figure 2 , Figure 3 As shown, lens assembly 5 includes a measuring lens 51 and a positioning lens 52. The measuring lens 51 includes a measuring body 511, a conversion disk 512, and multiple polarizing lenses 513 disposed on the conversion disk. The multiple polarizing lenses 513 are respectively embedded in multiple circular holes on the conversion disk 512. The measuring lens 51 is capable of capturing color images, while the positioning lens 52 is capable of capturing black and white images. The positioning lens 52 has high precision and can accurately position the image.

[0046] In this embodiment, four polarizing lenses 513 are provided on the conversion disk 512. The four polarizing lenses 513 are of the following types: left-handed circular polarizer, right-handed circular polarizer, first linear polarizer, and second linear polarizer. The polarization direction of the first linear polarizer and the polarization direction of the second linear polarizer are at a 90-degree angle; specifically, the first linear polarizer is a left-handed 45-degree linear polarizer, and the second linear polarizer is a right-handed 45-degree linear polarizer.

[0047] Furthermore, the conversion disk 512 is rotated to select the corresponding polarizing lens 513 and place it directly below the measuring body 511. The selection of the polarizing lens 513 depends on the type of 3D display patch on the 3D display module 8. For example, if the 3D display patch on the 3D display module 8 includes left-handed circular polarizing patches and right-handed circular polarizing patches, then the polarizing lens 513 of the type left-handed or right-handed circular polarizing lens should be placed directly below the measuring body 511. If the 3D display patch on the 3D display module 8 includes a first linear polarizing patch and a second linear polarizing patch, then the polarizing lens 513 of the type first linear polarizing lens or second linear polarizing lens should be placed directly below the measuring body 511.

[0048] S2: The illumination of the 3D display module is measured and photographed through the measuring lens to obtain an illumination image.

[0049] Specifically, in combination Figure 2 , Figure 3 As shown, after adjusting the corresponding polarizing lens 513, the measuring body 511 measures and captures the illuminance of the three-dimensional display module 8 through the polarizing lens 513 to obtain an illumination image. In this embodiment, the illumination image is a color image.

[0050] The illumination image is then transmitted to the detection host 2 via a data cable, and the detection host 2 analyzes the illumination image.

[0051] S3: Analyze the lighting image to determine if the 3D display patch on the 3D display module is pasted incorrectly; if it is pasted incorrectly, identify the first 3D display patch that is pasted incorrectly from among multiple 3D display patches based on the lighting image.

[0052] Specifically, in combination Figure 2 , Figure 3 As shown, the detection host 2 analyzes the illumination image (using... Figure 7 (Taking the 3D display module 8 as an example) Figure 7 It includes two different types of 3D display patches: left-handed circular offset patch 81 and right-handed circular offset patch 82, which are distributed in a checkerboard pattern.

[0053] Based on the characteristics of polarized light, a beam of natural light will become left-handed polarized light after passing through a left-handed circularly polarized patch 81. This left-handed polarized light can pass through the same left-handed circularly polarized lens with almost no loss, but most of it will be blocked by a right-handed circularly polarized lens. In other words, the brightness of the left-handed polarized light passing through the left-handed circularly polarized lens can be considered 100%, while the brightness after passing through the right-handed circularly polarized lens is 0. The same principle applies to right-handed polarized light and linearly polarized light, which will not be elaborated here.

[0054] Therefore, if the polarizing lens 513 selected at this time is a left-handed circularly polarized lens (and the display signal controls all LED beads on the 3D display module 8 to emit white light), and if the 3D display patch on the 3D display module 8 is not incorrectly pasted, then... Figure 7 After the 3D display module 8 takes a picture, the resulting illumination image should show that all the left-hand circular offset patches 81 (corresponding to: the left-hand circular offset patches 81 above the LED beads in odd-numbered rows and columns, and the left-hand circular offset patches 81 above the LED beads in even-numbered rows and columns) are "bright", while all the right-hand circular offset patches 82 (corresponding to: the right-hand circular offset patches 82 above the LED beads in even-numbered rows and columns, and the right-hand circular offset patches 82 above the LED beads in odd-numbered rows and columns) are "dark".

[0055] If some of the patches that should be pasted as left-handed circular offset patches 81 become "dark", or some of the patches that should be pasted as right-handed circular offset patches 82 become "bright", it means that these 3D display patches have been pasted incorrectly and need to be marked and corrected.

[0056] Furthermore, pasting errors also include the following situations: For example, if one of the left-handed circular offset patches 81 is "bright," but its position is off-center, causing the final lighting image to overlap or have cracks, this also indicates a pasting error. Another example is if a location in the lighting image is neither "bright" nor "dark," and its appearance differs from the surrounding image, it indicates that a 3D display patch was missed in that area.

[0057] In some other embodiments, the following determination method can also be used (first, set a display signal to control some of the LED beads on the three-dimensional display module 8 to emit light):

[0058] For example, such as Figure 7 As shown, if the selected polarizing lens 513 is a left-handed circular polarizing lens (and the display signal controls the LED beads in even columns of odd rows on the 3D display module 8 to emit white light, and the LED beads in odd columns of even rows to emit white light, while the remaining LED beads do not emit light), and if the 3D display patch on the 3D display module 8 is not incorrectly pasted, then for Figure 7 After the 3D display module 8 takes a picture, the resulting illumination image should show that all the left-hand circular offset patches 81 (corresponding to: the left-hand circular offset patches 81 above the LED beads in odd-numbered rows and columns, and the left-hand circular offset patches 81 above the LED beads in even-numbered rows and columns) are completely "dark", and all the right-hand circular offset patches 82 (corresponding to: the right-hand circular offset patches 82 above the LED beads in even-numbered rows and columns, and the right-hand circular offset patches 82 above the LED beads in odd-numbered rows and columns) are also completely "dark".

[0059] If any of the correct positions for the right-hand circular offset patch 82 become "bright," it indicates that these 3D display patches have been incorrectly attached and need to be marked and corrected. Compared to the aforementioned method (controlling all LEDs to emit light), this method (controlling a portion of the LEDs to emit light) requires two different images from the measuring lens (the first image showing the illumination when a portion of the LEDs are emitting light, and the second image showing the illumination when the remaining LEDs are emitting light). However, this method enhances the contrast of the illumination images during the assessment, further improving the detection accuracy of this invention.

[0060] In other embodiments, the two judgment methods described above can be combined for multiple checks, which can further improve the accuracy of detection and avoid false detections and missed detections. Specific steps and effects are described above and will not be repeated here.

[0061] Furthermore, if the detection host 2 analyzes the illumination image and determines that the 3D display patch on the 3D display module 8 is not incorrectly pasted, then the 3D display module 8 is directly moved off the platform 1 via the electric guide rail 3 and the conveying mechanism 7 on the right side of the platform 1.

[0062] If an error is detected in the pasting of a 3D display patch on the 3D display module 8, the first 3D display patch with the incorrect pasting is identified from among multiple 3D display patches based on the lighting image. The first 3D display patch can be one or more. For example, suppose the incorrectly pasted patch is... Figure 7The third left-hand circular offset patch 81 and the fourth right-hand circular offset patch 82 in the first row are recorded by the detection host 2 and identified as the first three-dimensional display patch.

[0063] S4: Position and capture images of the 3D display module using a positioning lens to obtain positioning images; calculate the coordinates of the first 3D display patch based on the positioning images.

[0064] Combination Figure 2 , Figure 3 As shown, in this embodiment, the positioning lens 52 is a monochrome lens, which has high precision and is suitable for precise positioning of devices.

[0065] Specifically, after the detection host 2 identifies the target, the positioning lens 52 locates and captures the 3D display module 8 to obtain a positioning image. The positioning image is then transmitted to the detection host 2 via a data cable, where it undergoes image recognition processing and conversion.

[0066] In this embodiment, a coordinate system is established within the positioning image, and the coordinates of each 3D display patch are defined. The lower left corner of the positioning image is the origin of the coordinate system, and the coordinates of the coordinate system can be represented as (Xi, Yj), i = (0, 1, 2, 3, 4, 5, 6, 7, 8…), j = (0, 1, 2, 3, 4, 5, 6, 7, 8…). The coordinates of the 3D display patch at the origin are (X0, Y0); the horizontal coordinate increases to the right in units of one column spacing, and the vertical coordinate increases upwards in units of one row spacing. Thus, each 3D display patch will correspond to a coordinate in the coordinate system.

[0067] Furthermore, the detection host 2, based on the positioning image, identifies the first three-dimensional display patch (e.g., ...) in S3. Figure 7 The positions of the third left-hand circular offset patch 81 and the fourth right-hand circular offset patch 82 in the first row are calculated and converted into corresponding coordinates (e.g., the coordinates of the third left-hand circular offset patch 81 in the first row are (X3, Y8), and the coordinates of the fourth right-hand circular offset patch 82 in the first row are (X4, Y8)).

[0068] S5: Based on the coordinates of the first three-dimensional display patch, control the marking mechanism to mark the first three-dimensional display patch.

[0069] Combination Figure 2 , Figures 4 to 6 As shown, specifically, the detection host 2 controls the marking mechanism 6 to mark the first three-dimensional display patch according to the coordinates of the first three-dimensional display patch.

[0070] The marking mechanism 6 includes a swing arm 61, a dispensing head 62 located below the front end of the swing arm 61, and a lifter 63 and a rotator 64 located at the rear end of the swing arm 61. The lifter 63 drives the swing arm 61 to move up and down, and the rotator 64 drives the swing arm 61 to rotate and swing. The dispensing head 62 can be filled with red glue or colored pigment for marking incorrectly pasted first 3D display patches.

[0071] Furthermore, in combination Figure 2 , Figure 6 As shown, a moving mechanism 9 is also provided below the detection host 2. The moving mechanism 9 includes two transverse guide rails 91 and a longitudinal guide rail 92 disposed between the two transverse guide rails 91. The lifting device 63 of the marking mechanism 6 is slidably mounted below the longitudinal guide rail 92. A stepper motor is provided in the transverse guide rail 91 to drive the longitudinal guide rail 92 to perform reciprocating left-right translational movement between the two transverse guide rails 91; a stepper motor is provided in the longitudinal guide rail 92 to drive the lifting device 63 to perform reciprocating back-forward translational movement within the longitudinal guide rail 92.

[0072] The marking mechanism 6 reciprocates at a fixed angle α between itself and the marking platform 66 above the 3D display module 8. The marking platform 66 is filled with red glue or colored pigment.

[0073] When the rotator 64 drives the swing arm 61 to rotate to the marking platform 66, the lifter 63 drives the swing arm 61 to move downwards, absorbing red glue or colored pigment from the marking platform 66 through the dispensing head 62. Then, the lifter 63 drives the swing arm 61 to move upwards, and the rotator 64 drives the swing arm 61 to rotate to a suitable angle. Two stepper motors respectively drive the longitudinal guide rail 92 to move left and right and drive the lifter 63 to move back and forth, adjusting the positions of the swing arm 61 and the dispensing head 62 until it rotates to the first 3D display patch above the 3D display module 8. The lifter 63 then drives the swing arm 61 to move downwards, dispensing glue or dripping pigment onto the first 3D display patch through the dispensing head 62. The marked first 3D display patch 65 is as follows... Figure 5 As shown.

[0074] Repeat the marking steps above until all incorrectly pasted first 3D display patches have been marked.

[0075] Furthermore, the marked 3D display module 8 is transferred out of the stage 1. The first 3D display patch with pasting errors is then corrected according to the markings, and the corrected 3D display module 8 is cured. Natural curing, heat curing, and light curing can be used. It should be noted that when using heat curing, the curing temperature should be below 90℃ to avoid damaging the 3D display patch due to excessive temperature.

[0076] Corresponding to the detection method for three-dimensional display modules in the above embodiments, this application also provides a detection device for three-dimensional display modules. For ease of explanation, only the parts related to the embodiments of this application are shown.

[0077] like Figures 2 to 6 As shown, the testing equipment includes a platform 1, a testing host 2, an electric guide rail 3, an operating table 4, a lens group 5, a marking mechanism 6, a power supply module and a signal source module installed inside the platform 1, and a conveying mechanism 7 installed on the left and right sides of the platform 1; wherein, the lens group 5 includes a measuring lens 51 and a positioning lens 52.

[0078] In this embodiment, the conveying mechanism 7 is used to convey the three-dimensional display module 8; the power supply module is used to supply power to the three-dimensional display module 8; the signal source module is used to provide display signals to the three-dimensional display module 8; the measuring lens 51 is used to measure and capture the illuminance of the three-dimensional display module 8 to obtain an illumination image; the detection host 2 is used to analyze the illumination image to determine whether the three-dimensional display patch on the three-dimensional display module 8 is incorrectly pasted; if it is incorrectly pasted, the first incorrectly pasted three-dimensional display patch is identified from multiple three-dimensional display patches according to the illumination image; the positioning lens 52 is used to position and capture the three-dimensional display module 8 to obtain a positioning image; the detection host 2 is also used to calculate and obtain the coordinates of the first three-dimensional display patch according to the positioning image; and is also used to control the marking mechanism 6 to mark the first three-dimensional display patch according to the coordinates of the first three-dimensional display patch.

[0079] Furthermore, the marking mechanism 6 includes a swing arm 61, a dispensing head 62 disposed below the front end of the swing arm 61, and a lifter 63 and a rotator 64 disposed at the rear end of the swing arm 61. The lifter 63 drives the swing arm 61 to move up and down, and the rotator 64 drives the swing arm 61 to rotate and swing.

[0080] Furthermore, the testing equipment also includes a moving mechanism 9 located below the testing host 2. The moving mechanism 9 includes two transverse guide rails 91 and a longitudinal guide rail 92 positioned between the two transverse guide rails 91. The lifting device 63 of the marking mechanism 6 is slidably mounted below the longitudinal guide rail 92. A stepper motor is installed within the transverse guide rails 91 to drive the longitudinal guide rail 92 in a reciprocating left-right translational motion between the two transverse guide rails 91; a stepper motor is installed within the longitudinal guide rail 92 to drive the lifting device 63 in a reciprocating forward-backward translational motion within the longitudinal guide rail 92.

[0081] Furthermore, the measuring lens 51 includes a measuring body 511, a conversion disk 512, and multiple polarizing lenses 513 disposed on the conversion disk 512; the multiple polarizing lenses 513 are of the following types: left-handed circular polarizing lens, right-handed circular polarizing lens, first linear polarizing lens, and second linear polarizing lens; wherein, the polarization direction of the first linear polarizing lens and the polarization direction of the second linear polarizing lens are at a 90-degree angle.

[0082] It should be noted that the other technical features in the detection equipment for the three-dimensional display module are the same as those disclosed in the above method embodiments, and can be referred to the descriptions in the corresponding method embodiments above, which will not be repeated here.

[0083] Based on the same inventive concept, this application also provides a computer-readable storage medium storing a computer program that can be executed by a processor to implement the above-described detection method for a three-dimensional display module.

[0084] See Figure 9 If the integrated units described above are implemented as software functional units and sold or used as independent products, they can be stored in computer-readable storage medium 300. Based on this understanding, the technical solution of this application, in essence, or the part that contributes to the prior art, or all or part of the technical solution, can be embodied in the form of a software product. This computer software product is stored in a storage medium and includes several instructions / computer programs to cause an Internet of Things device (which may be a personal computer, server, or network terminal, etc.) or processor to execute all or part of the steps of the methods of various embodiments of this application. The aforementioned storage medium includes various media such as USB flash drives, portable hard drives, read-only memory (ROM), random access memory (RAM), magnetic disks, or optical disks, as well as electronic terminals such as computers, mobile phones, laptops, tablets, and cameras that have the aforementioned storage media.

[0085] The description of the execution process of program data in a computer-readable storage medium can be found in the descriptions in the various method embodiments of this application above, and will not be repeated here.

[0086] Therefore, this invention discloses a detection method, device, and medium for 3D display modules. The method includes the following steps: transferring the 3D display module to be detected to a platform and powering it on; measuring and photographing the illuminance of the 3D display module through a measuring lens to obtain an illumination image; analyzing the illumination image to determine whether the 3D display patches on the 3D display module are incorrectly pasted; if incorrectly pasted, identifying the first incorrectly pasted 3D display patch from multiple 3D display patches based on the illumination image; positioning the 3D display module through a positioning lens and photographing it to obtain a positioning image; calculating the coordinates of the first 3D display patch based on the positioning image; and controlling a marking mechanism to mark the first 3D display patch based on its coordinates. This invention can automatically detect processed 3D display modules, accurately identify and mark incorrectly pasted 3D display patches, and can quickly and accurately identify even LEDs with high density and small pitch on the 3D display module, without the need for manual inspection. This not only effectively improved testing efficiency and accuracy, but also increased production efficiency, significantly improved the yield of 3D display modules, reduced production costs, and saved human resources.

[0087] The above description is merely an embodiment of the present invention and does not limit the patent scope of the present invention. Any equivalent structural transformations made based on the content of the present invention specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present invention.

Claims

1. A detection method for a three-dimensional display module, characterized by, Including the following steps: The 3D display module to be tested is transferred to the platform and powered on; wherein, the 3D display module includes multiple LED beads and 3D display patches pasted on the LED beads; Provide display signals to the three-dimensional display module, and control the corresponding LED beads to not emit light, emit light of the corresponding color, or emit light of the corresponding pattern according to different display signals; The illuminance of the 3D display module is measured and photographed through a measuring lens to obtain an illumination image. The measuring lens includes a measuring body, a conversion disk, and multiple polarizing lenses disposed on the conversion disk. That is, the illuminance of the 3D display module is measured and photographed through the polarizing lenses by the measuring body. The selection of the polarizing lenses depends on the type of 3D display patch corresponding to the 3D display module. The illumination image is analyzed to determine whether the 3D display patch on the 3D display module is incorrectly pasted; if it is incorrectly pasted, the first incorrectly pasted 3D display patch is identified from among the multiple 3D display patches based on the illumination image. The three-dimensional display module is positioned and photographed using a positioning lens to obtain a positioning image; the coordinates of the first three-dimensional display patch are calculated based on the positioning image, including: establishing a coordinate system within the positioning image and defining the coordinates of each three-dimensional display patch; and calculating the position of the first three-dimensional display patch based on the positioning image and converting it into corresponding coordinates. Based on the coordinates of the first three-dimensional display patch, the marking mechanism is controlled to mark the first three-dimensional display patch; The three-dimensional display patch includes a left-handed circular patch and a right-handed circular patch; the left-handed circular patch and the right-handed circular patch are evenly distributed in a checkerboard pattern on the three-dimensional display module; Alternatively, the three-dimensional display patch includes a first line-biased patch and a second line-biased patch, wherein the polarization direction of the first line-biased patch and the polarization direction of the second line-biased patch form a 90-degree angle; the first line-biased patch and the second line-biased patch are uniformly distributed in a checkerboard pattern on the three-dimensional display module.

2. The detection method for a three-dimensional display module according to claim 1, wherein After the steps of transferring the 3D display module to be tested to the platform and powering on the 3D display module, the method further includes the following steps: Adjust the position of the lens group so that it is directly above the 3D display module; wherein, the lens group includes the measuring lens and the positioning lens; Rotate the conversion disk to select the corresponding polarizing lens and place it directly below the measuring body.

3. The detection method for a three-dimensional display module according to claim 2, wherein, Four polarizing lenses are provided on the conversion disk. The four polarizing lenses are of the following types: left-handed circular polarizing lens, right-handed circular polarizing lens, first linear polarizing lens, and second linear polarizing lens. The polarization direction of the first linear polarizing lens and the polarization direction of the second linear polarizing lens form a 90-degree angle.

4. The detection method for a three-dimensional display module according to claim 1, wherein It also includes follow-up steps: The marked 3D display module is then transferred out of the platform; The first 3D display patch with the incorrect pasting is corrected according to the markings, and the corrected 3D display module is then cured.

5. An inspection apparatus for a three-dimensional display module, characterized by comprising: The detection equipment performs the steps of the detection method as described in any one of claims 1 to 4 when it is in operation. The detection equipment includes a platform, a detection host, an electric guide rail, an operating table, a lens group, and a marking mechanism disposed on the platform, a power module and a signal source module disposed inside the platform, and a conveying mechanism disposed on the left and right sides of the platform; wherein, the lens group includes a measuring lens and a positioning lens. The conveying mechanism is used to convey the three-dimensional display module; The power module is used to supply power to the three-dimensional display module; The signal source module is used to provide display signals to the three-dimensional display module; according to different display signals, it controls the corresponding LED beads to not emit light, or to emit light of the corresponding color, or to emit light of the corresponding pattern. The measuring lens is used to measure and capture the illuminance of the three-dimensional display module to obtain an illumination image; the measuring lens includes a measuring body, a conversion disk, and multiple polarizing lenses disposed on the conversion disk, the selection of which depends on the type of three-dimensional display patch on the three-dimensional display module; The detection host is used to analyze the illumination image to determine whether the three-dimensional display patch on the three-dimensional display module is pasted incorrectly; if it is pasted incorrectly, the first three-dimensional display patch that is pasted incorrectly is identified from the plurality of three-dimensional display patches according to the illumination image. The positioning lens is used to position and capture images of the three-dimensional display module to obtain positioning images; The detection host is also used to calculate the coordinates of the first three-dimensional display patch based on the positioning image; and to control the marking mechanism to mark the first three-dimensional display patch based on the coordinates of the first three-dimensional display patch.

6. The detection apparatus for a three-dimensional display module according to claim 5, wherein The marking mechanism includes a swing arm, a dispensing head disposed below the front end of the swing arm, and a lifter and a rotator disposed at the rear end of the swing arm. The lifter drives the swing arm to move up and down, and the rotator drives the swing arm to rotate and swing.

7. The detection apparatus for a three-dimensional display module according to claim 5, wherein The types of polarizing lenses are: left-handed circular polarizing lens, right-handed circular polarizing lens, first linear polarizing lens, and second linear polarizing lens; wherein the polarization direction of the first linear polarizing lens and the polarization direction of the second linear polarizing lens form a 90-degree angle.

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