Detection method and equipment for three-dimensional display module and medium

Abstract

The invention discloses a detection method and device for a three-dimensional display module and a medium. The method comprises the steps that the three-dimensional display module is conveyed to a carrying table and powered on; carrying out illuminance measurement and shooting on the three-dimensional display module through a measurement lens to obtain an illumination image; analyzing the illumination image, and judging whether the three-dimensional display patch is wrongly pasted or not; if the pasting is wrong, identifying the first three-dimensional display patch which is wrongly pasted; positioning and shooting the three-dimensional display module through a positioning lens to obtain a positioning image; calculating coordinates of the first three-dimensional display patch according to the positioning image; and controlling a marking mechanism to mark the first three-dimensional display patch according to the coordinates. The three-dimensional display module can be automatically detected, the three-dimensional display patches which are wrongly pasted can be accurately recognized and marked, and manual detection is not needed. The detection efficiency is effectively improved, the detection precision is improved, meanwhile, the finished product yield of the three-dimensional display module is remarkably improved, and the production cost is reduced.

Description

Technical Field

[0001] The present invention relates to the field of stereoscopic display technology, and in particular to a detection method, device and medium for a three-dimensional display module. Background Art

[0002] At present, LED display screens have been widely used in all aspects of people's work and life, bringing people rich and colorful visual enjoyment. Among them, three-dimensional LED display screens have attracted special attention due to their immersive feeling.

[0003] In the prior art, the ways in which 3D LED screens display 3D images are mainly divided into two categories, one is the electronic shutter type, and the other is the polarization type. The principle of the polarization type 3D LED screen is to divide all the pixel arrays constituting the screen into two equal parts, one part is equipped with a polarization film with a polarization direction, and the other part is equipped with another polarization film with a polarization direction opposite to the polarization direction. When the two parts of pixels display pictures with different contents respectively, the viewer can see realistic 3D images by wearing corresponding polarization glasses.

[0004] However, in the production process of polarized 3D LED display screens, polarizing films with different polarization directions must be cut separately, and two different polarizing films must be pasted on the surface of the display screen separately, and it must be ensured that they are not pasted incorrectly. This process has a very large workload, low production efficiency, and is very labor-intensive and resource-intensive. Especially when LED display screens are developing towards high-density and small-pitch, there are more and more lamp beads per unit area, and the corresponding polarizing film size is also getting smaller and smaller, which leads to a significant increase in the error rate of polarizing film pasting, increased detection difficulty, and excessively high detection costs. In the existing technology, manual detection is inefficient and has a high missed detection rate, resulting in a significant decrease in the yield of finished products, which not only prolongs the production cycle, but also further increases production costs. Summary of the invention

[0005] The present invention provides a detection method, device and medium for a three-dimensional display module, which solves the problems in the process of producing a three-dimensional LED display screen, that is, due to the high density and small spacing of lamp beads, the error rate is high when pasting a polarizing film thereon, the detection is difficult when the finished product is completed, the detection cost is too high, and the manual detection efficiency in the prior art is low, the missed detection rate is high, and the yield rate is significantly reduced.

[0006] To solve the above technical problems, the technical solution adopted by the present invention is to provide a detection method for a three-dimensional display module, comprising the steps of: transferring a three-dimensional display module to be detected onto a carrier 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 a light image; analyzing the light image to determine whether a three-dimensional display patch on the three-dimensional display module is pasted incorrectly; if pasted incorrectly, identifying a first three-dimensional display patch that is pasted incorrectly from a plurality of the three-dimensional display patches according to the light image; positioning and photographing the three-dimensional display module through a positioning lens to obtain a positioning image; calculating and obtaining the coordinates of the first three-dimensional display patch according to the positioning image; and controlling a marking mechanism to mark the first three-dimensional display patch according to the coordinates of the first three-dimensional display patch.

[0007] In some embodiments, after the step of transferring the three-dimensional display module to be detected to the stage and powering on the three-dimensional display module, the step further includes: 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 polarized lenses arranged on the conversion disk; rotating the conversion disk to select the corresponding polarized lens and place 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, and the polarization direction of the first linear polarization patch and the polarization direction of the second linear polarization patch are at an angle of 90 degrees.

[0009] In some embodiments, four polarized lenses are arranged on the conversion disk, and the types of the four polarized lenses are: left-handed circularly polarized lens, right-handed circularly polarized lens, first linear polarized lens and second linear polarized lens; wherein the polarization direction of the first linear polarized lens and the polarization direction of the second linear polarized lens form an angle of 90 degrees.

[0010] In some embodiments, the left-handed circular polarization patches and the right-handed circular polarization patches are evenly distributed in a checkerboard pattern on the three-dimensional display module; or, the left-handed circular polarization patches and the right-handed circular polarization patches are distributed alternately laterally or vertically in the shape of long strips on the three-dimensional display module; or, the first linear polarization patches and the second linear polarization patches are evenly distributed in a checkerboard pattern on the three-dimensional display module; or, the first linear polarization patches and the second linear polarization patches are distributed alternately laterally or vertically in the shape of long strips on the three-dimensional display module.

[0011] In some embodiments, the subsequent steps are also included: transferring the marked three-dimensional display module out of the carrier; correcting the wrongly pasted first three-dimensional display patch according to the marking, and curing the corrected three-dimensional display module.

[0012] The present invention also provides a detection device for a three-dimensional display module, comprising a carrier, a detection host, an electric guide rail, an operating table, a lens group, a marking mechanism arranged on the carrier, a power module and a signal source module arranged inside the carrier, and a transmission mechanism arranged on the left and right sides of the carrier; wherein the lens group comprises a measuring lens and a positioning lens; the transmission mechanism is used to transmit 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 a display signal for the three-dimensional display module; the measuring lens is used to measure the illumination of the three-dimensional display module and take a picture , obtaining an illumination image; 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 multiple three-dimensional display patches according to the illumination image; the positioning lens is used to position and photograph the three-dimensional display module to obtain a positioning image; the detection host is also used to calculate the coordinates of the first three-dimensional display patch according to the positioning image; and is also used to control the marking mechanism to mark the first three-dimensional display patch according to the coordinates of the first three-dimensional display patch.

[0013] In some embodiments, the marking mechanism includes a swing arm, a dispensing head arranged below the front end of the swing arm, and a lifter and a rotator arranged 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 polarized lenses arranged on the conversion disk; the types of the plurality of polarized lenses are respectively: left-handed circularly polarized lens, right-handed circularly polarized lens, a first linearly polarized lens, and a second linearly polarized lens; wherein the polarization direction of the first linearly polarized lens and the polarization direction of the second linearly polarized lens form an angle of 90 degrees.

[0015] The present invention also provides a computer-readable storage medium, wherein the computer-readable storage medium stores a computer program, and when the computer program is executed by a processor, the steps of the method described above are implemented.

[0016] The beneficial effects of the present invention are as follows: the present invention discloses a detection method, device and medium for a three-dimensional display module, the method comprising the steps of: transferring a three-dimensional display module to be detected onto a carrier, and energizing the three-dimensional display module; measuring the illumination of the three-dimensional display module through a measuring lens and photographing it to obtain an illumination image; analyzing the illumination image to determine whether the three-dimensional display patch on the three-dimensional display module is pasted incorrectly; if pasted incorrectly, identifying the first three-dimensional display patch pasted incorrectly from multiple three-dimensional display patches according to the illumination image; positioning the three-dimensional display module through a positioning lens and photographing it to obtain a positioning image; calculating and obtaining the coordinates of the first three-dimensional display patch according to the positioning image; and controlling the marking mechanism to mark the first three-dimensional display patch according to the coordinates of the first three-dimensional display patch. The present invention can automatically detect the processed three-dimensional display module, accurately identify the three-dimensional display patch pasted incorrectly and mark it, and even if the lamp beads on the three-dimensional display module have the characteristics of high density and small spacing, they can be quickly and accurately identified without manual detection. It not only effectively improves the detection efficiency and accuracy, but also improves the production efficiency, significantly improves the finished product yield of the 3D display module, reduces production costs, and saves human resources. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a flow chart of a detection method for a three-dimensional display module of the present invention; Figure 2 It is a structural schematic diagram of a detection device for a three-dimensional display module of the present invention; Figure 3 It is a structural schematic diagram of a lens group in a detection device for a three-dimensional display module of the present invention; Figure 4 It is a structural schematic diagram of a marking mechanism in a detection device for a three-dimensional display module of the present invention; Figure 5 It is a schematic diagram of the rotation of a swing arm of a marking mechanism in a detection device for a three-dimensional display module of the present invention; Figure 6 It is a top view connection schematic diagram of a marking mechanism in a detection device for a three-dimensional display module of the present invention; Figure 7 It is a schematic diagram of 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 of the present invention; Figure 8 It is another schematic diagram of 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 of the present invention; Fig. 9 It is a schematic block diagram of an embodiment of a computer-readable storage medium of the present application. DETAILED DESCRIPTION

[0018] In order to facilitate the understanding of the present invention, the present invention is described in more detail below in conjunction with the accompanying drawings and specific embodiments. Preferred embodiments of the present invention are provided in the accompanying drawings. However, the present invention can be implemented in many different forms and is not limited to the embodiments described in this specification. On the contrary, the purpose of providing these embodiments is to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0019] It should be noted that, unless otherwise defined, all technical and scientific terms used in this specification have the same meaning as those commonly understood by those skilled in the art of the present invention. The terms used in the specification of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used in this specification includes any and all combinations of one or more related listed items.

[0020] Figure 1 The following is a flowchart of a detection method for a three-dimensional display module provided by the present application, including the following steps: S1: The three-dimensional display module to be inspected is transferred to the carrier, and the three-dimensional display module is powered on.

[0021] S2: Measure and photograph the illumination of the three-dimensional display module through a measuring lens to obtain an illumination image.

[0022] S3: Analyze the illumination image to determine whether the 3D display patch on the 3D display module is pasted incorrectly; if it is pasted incorrectly, identify a first 3D display patch that is pasted incorrectly from multiple 3D display patches according to the illumination image.

[0023] S4: positioning and photographing the three-dimensional display module through a positioning lens to obtain a positioning image; and calculating and obtaining the coordinates of the first three-dimensional display patch according to the positioning image.

[0024] S5: According to the coordinates of the first three-dimensional display tile, control the marking mechanism to mark the first three-dimensional display tile.

[0025] The present invention can automatically detect the processed three-dimensional display module, accurately identify the three-dimensional display patch with the wrong paste and mark it, and even if the lamp beads on the three-dimensional display module have the characteristics of high density and small spacing, they can be quickly and accurately identified without manual detection. It not only effectively improves the detection efficiency and detection accuracy, but also improves the production efficiency, significantly improves the finished product yield of the three-dimensional display module, reduces production costs, and saves human resources.

[0026] Combine the following Figures 1 to 9 , the present application is further described in detail with specific embodiments.

[0027] like Figure 1 As shown, the detection method for a three-dimensional display module provided in the embodiment of the present application is described in detail as follows: S1: The three-dimensional display module to be inspected is transferred to the carrier, and the three-dimensional display module is powered on.

[0028] It should be noted that the detection method for the three-dimensional display module provided in this application is as follows: Figure 2 The detection device 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 module and a signal source module arranged inside the platform 1, and a transmission mechanism 7 arranged on the left and right sides of the platform 1.

[0029] The three-dimensional display module 8 includes a plurality of LED lamp beads and a three-dimensional display patch attached to each LED lamp bead. Figure 7 , Figure 8 As shown, the three-dimensional display patch includes a left-hand circular deflection patch 81 and a right-hand circular deflection patch 82. Two different types of three-dimensional display patches can be as follows Figure 7 As shown, they are evenly distributed in a checkerboard pattern; Figure 8 As shown, they are distributed alternately horizontally in the shape of long strips (or distributed alternately vertically in the shape of long strips, not shown).

[0030] In some other embodiments, the three-dimensional 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 are at an angle of 90 degrees. When the polarization directions of the first linear polarization patch and the second linear polarization patch are at an angle of 90 degrees to each other, the visual effect is the same as that brought by the above-mentioned left-handed circular polarization patch 81 and the right-handed circular polarization patch 82. Specifically, the first linear polarization patch is a left 45-degree linear polarization patch, and the second linear polarization patch is a right 45-degree linear polarization patch. The distribution of the first linear polarization patch and the second linear polarization patch on the three-dimensional display module 8 can refer to the distribution of the above-mentioned left-handed circular polarization patch 81 and the right-handed circular polarization patch 82, which will not be repeated here.

[0031] The method of the present application first needs to transfer the completed and to-be-tested 3D display module 8 to the carrier 1 through the transfer mechanism 7 on the left side of the carrier 1. Specifically, the 3D display module 8 is first transferred to the operating table 4, and the operating table 4 is moved to the bottom of the lens group 5 through the electric guide rail 3. Then, the 3D display module 8 is powered on, and the power module and the signal source module inside the carrier 1 are connected to the power interface and the signal source interface of the 3D display module 8 through the power line and the signal line, respectively.

[0032] 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. According to different display signals, the three-dimensional display module 8 can display different images. Figure 8 As shown, a display signal is input through the signal line (the display signal is set to make the LED lamp beads in the odd rows light up and the LED lamp beads in the even rows not light up), then Figure 8 The light emitted by the LED lamp beads in the odd-numbered rows emits corresponding polarized light after passing through the right-handed circular polarization patch 82 above; while the LED lamp beads in the even-numbered rows are not lit, because they do not emit polarized light after passing through the left-handed circular polarization patch 81 above, and appear black. Figure 8 As shown, another display signal is input through the signal line (the display signal is set to light up both the LED lamp beads in the odd-numbered rows and the LED lamp beads in the even-numbered rows), then Figure 8 The light emitted by the LED lamp beads in the odd-numbered rows emits corresponding polarized light after passing through the right-handed circular polarization patch 82 above; and the light emitted by the LED lamp beads in the even-numbered rows also emits corresponding polarized light after passing through the left-handed circular polarization patch 81 above. Figure 8 As shown, another display signal is input through the signal line (the display signal setting makes the LED lamp beads in odd rows emit white light, and the LED lamp beads in even rows emit red light), then Figure 8 The white light emitted by the LED lamp beads in the odd-numbered rows emits corresponding white polarized light after passing through the right-handed circular polarization patch 82 above; and the red light emitted by the LED lamp beads in the even-numbered rows also emits corresponding red polarized light after passing through the left-handed circular polarization patch 81 above. In some other embodiments, the corresponding LED lamp beads can also be controlled not to emit light, or to emit light of corresponding colors, or to emit light of corresponding patterns according to different display signals. The display signal of the present application can be set to one or more different ones according to needs, so that the three-dimensional display module 8 has different display effects.

[0033] After the three-dimensional display module 8 is powered on, the LED lamp beads on it are lit according to the set display signal, displaying the corresponding image, and emitting different polarized light (or no light) through the three-dimensional display patch. Furthermore, the three-dimensional display module 8 is fixed by the clamp on the operating table 4 to avoid shaking during detection, which affects the accuracy of detection.

[0034] Furthermore, the position of the lens group 5 is adjusted so that the lens group 5 is located directly above the three-dimensional display module 8, thereby further improving the accuracy of the shooting of the lens group 5.

[0035] Specific, combined Figure 2 , Figure 3As shown, the lens group 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 a plurality of polarized lenses 513 disposed on the conversion disk. The plurality of polarized lenses 513 are respectively embedded in a plurality of circular holes on the conversion disk 512. The measuring lens 51 is a lens that can take color images, while the positioning lens 52 is a lens that can take black and white images. The positioning lens 52 has high precision and can be accurately positioned.

[0036] In this embodiment, four polarized lenses 513 are arranged on the conversion disk 512, and the types of the four polarized lenses 513 are respectively: a left-handed circularly polarized lens, a right-handed circularly polarized lens, a first linearly polarized lens, and a second linearly polarized lens. The polarization direction of the first linearly polarized lens and the polarization direction of the second linearly polarized lens form an angle of 90 degrees; specifically, the first linearly polarized lens is a left 45-degree linearly polarized lens, and the second linearly polarized lens is a right 45-degree linearly polarized lens.

[0037] Further, the conversion disk 512 is rotated to select a corresponding polarized lens 513 and place it directly below the measuring body 511. The selection of the polarized lens 513 depends on the type of the three-dimensional display patch on the three-dimensional display module 8. For example, if the three-dimensional display patch on the three-dimensional display module 8 includes a left-handed circular polarized patch and a right-handed circular polarized patch, the polarized lens 513 of the type of a left-handed circular polarized lens or a right-handed circular polarized lens should be placed directly below the measuring body 511. If the three-dimensional display patch on the three-dimensional display module 8 includes a first linear polarized patch and a second linear polarized patch, the polarized lens 513 of the type of a first linear polarized lens or a second linear polarized lens should be placed directly below the measuring body 511.

[0038] S2: Measure and photograph the illumination of the three-dimensional display module through a measuring lens to obtain an illumination image.

[0039] Specific, combined Figure 2 , Figure 3 As shown, after the corresponding polarized lens 513 is adjusted, the illumination of the three-dimensional display module 8 is measured and photographed through the polarized lens 513 by the measuring body 511 to obtain an illumination image. In this embodiment, the illumination image is a color image.

[0040] The illumination image is further transmitted to the detection host 2 via a data line, and the illumination image is analyzed by the detection host 2.

[0041] S3: Analyze the illumination image to determine whether the 3D display patch on the 3D display module is pasted incorrectly; if it is pasted incorrectly, identify a first 3D display patch that is pasted incorrectly from multiple 3D display patches according to the illumination image.

[0042] Specific, combined Figure 2 , Figure 3As shown, the detection host 2 analyzes the illumination image (in terms of Figure 7 Taking the three-dimensional display module 8 as an example), Figure 7 The 3D display patches include two different types of left-handed circularly-biased patches 81 and right-handed circularly-biased patches 82 , which are distributed in a checkerboard pattern.

[0043] According to the polarization characteristics, a beam of natural light will become left-handed polarized light after passing through the left-handed circular polarization patch 81, and the left-handed polarized light can pass through the same left-handed circular polarization lens with almost no loss, but most of it will be blocked by the right-handed circular polarization lens. That is to say, the brightness of the left-handed polarized light passing through the left-handed circular polarization lens can be considered to be 100%, while the brightness after passing through the right-handed circular polarization lens is 0. The same is true for right-handed polarized light and linear polarized light, which will not be repeated here.

[0044] Therefore, if the polarized lens 513 selected at this time is a left-handed circular polarized lens (and the display signal controls all LED lamp beads on the three-dimensional display module 8 to emit white light), and the three-dimensional display patch on the three-dimensional display module 8 is not pasted incorrectly, then Figure 7 After the three-dimensional display module 8 shown is taken, the obtained illumination image should be that all the left-handed circular polarization patches 81 (corresponding to: the left-handed circular polarization patches 81 located above the LED lamp beads in odd columns on odd rows, and the left-handed circular polarization patches 81 located above the LED lamp beads in even columns on even rows) are all "bright", and all the right-handed circular polarization patches 82 (corresponding to: the right-handed circular polarization patches 82 located above the LED lamp beads in even columns on odd rows, and the right-handed circular polarization patches 82 located above the LED lamp beads in odd columns on even rows) are all "dark".

[0045] If the positions where some of the patches 81 should be pasted as left-handed circular bias patches become "dark", or the positions where some of the patches 82 should be pasted as right-handed circular bias patches become "bright", it means that these three-dimensional display patches have been pasted incorrectly and need to be marked and corrected.

[0046] Furthermore, the pasting error also includes the following situations: for example, one of the left-hand circular deflection patches 81 is "bright", but the position is offset, resulting in overlapping or cracked illumination images, which also indicates a pasting error. For example, if one position in the illumination image is neither "bright" nor "dark", and the displayed image is different from the surrounding images, it means that the 3D display patch is missing here.

[0047] In some other embodiments, the following judgment method may also be used (firstly, a display signal is set to control some LED lamp beads on the three-dimensional display module 8 to emit light): For example, Figure 7As shown, if the polarizing lens 513 selected at this time is a left-handed circular polarizing lens (and the display signal controls the LED lamp beads located in the even columns on the odd rows on the three-dimensional display module 8, and the LED lamp beads located in the odd columns on the even rows on the three-dimensional display module 8 to emit white light, and the other LED lamp beads do not emit light), and the three-dimensional display patch on the three-dimensional display module 8 is not pasted incorrectly, then Figure 7 After the three-dimensional display module 8 shown is taken, the obtained illumination image should be that all the left-handed circular polarization patches 81 (corresponding to: the left-handed circular polarization patches 81 located above the LED lamp beads in odd columns on odd rows, and the left-handed circular polarization patches 81 located above the LED lamp beads in even columns on even rows) are completely "dark", and all the right-handed circular polarization patches 82 (corresponding to: the right-handed circular polarization patches 82 located above the LED lamp beads in even columns on odd rows, and the right-handed circular polarization patches 82 located above the LED lamp beads in odd columns on even rows) are also completely "dark".

[0048] If the position where some of the right-hand circular deflection patches 82 should be pasted becomes "bright", it means that these three-dimensional display patches have been pasted incorrectly and need to be marked and corrected. Compared with the above judgment method (controlling the light emission of all LED beads), this judgment method (controlling the light emission of some LED beads) requires the measurement lens to take two different shots (the first time is the light image when some LED beads emit light, and the second time is the light image when the remaining LED beads emit light), but it enhances the contrast of the light image judgment, further improving the detection accuracy of the present invention.

[0049] In some other embodiments, the above two judgment methods can be combined to make a joint judgment, and multiple inspections can further improve the accuracy of the detection and avoid false detection and missed detection. The specific steps and effects can be referred to the above description, which will not be repeated here.

[0050] 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 pasted incorrectly, the 3D display module 8 is directly moved out of the stage 1 through the electric guide rail 3 and the conveying mechanism 7 on the right side of the stage 1.

[0051] If it is determined that the 3D display patch on the 3D display module 8 is pasted incorrectly, then the first 3D display patch pasted incorrectly is identified from the multiple 3D display patches according to the illumination image. The first 3D display patch may be one or more. For example, assuming that the pasted incorrectly is Figure 7 The third left-handed circularly deflected patch 81 and the fourth right-handed circularly deflected patch 82 in the first row are detected by the detection host 2 and recorded, and identified as the first three-dimensional display patch.

[0052] S4: positioning and photographing the three-dimensional display module through a positioning lens to obtain a positioning image; and calculating and obtaining the coordinates of the first three-dimensional display patch according to the positioning image.

[0053] Combination Figure 2 , Figure 3 As shown, in this embodiment, the positioning lens 52 is a black and white lens with high precision, which is suitable for accurately positioning the device.

[0054] Specifically, after the detection host 2 recognizes, the positioning lens 52 locates and photographs the three-dimensional display module 8 to obtain a positioning image. The positioning image is further transmitted to the detection host 2 via a data line, and the detection host 2 performs image recognition processing and conversion on the positioning image.

[0055] In this embodiment, a coordinate system is established in the positioning image to define the coordinates of each three-dimensional display patch. The lower left corner of the positioning image is the coordinate origin of the coordinate system, and the coordinates of the coordinate system can be expressed 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 three-dimensional display patch at the origin of the coordinate are (X0, Y0); the horizontal coordinate increases to the right in units of one column spacing, and the vertical coordinate increases upward in units of one row spacing. As a result, each three-dimensional display patch will correspond to a coordinate in the coordinate system.

[0056] Further, the detection host 2 detects the first three-dimensional display tile (for example Figure 7 The positions of the third left-handed circular deviation patch 81 and the fourth right-handed circular deviation patch 82 in the first row are calculated and converted into corresponding coordinates (for example, the coordinates of the third left-handed circular deviation patch 81 in the first row are (X3, Y8), and the coordinates of the fourth right-handed circular deviation patch 82 in the first row are (X4, Y8)).

[0057] S5: According to the coordinates of the first three-dimensional display tile, control the marking mechanism to mark the first three-dimensional display tile.

[0058] 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.

[0059] The marking mechanism 6 includes a swing arm 61, a glue 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. The glue dispensing head 62 can be filled with red glue or colored pigments to mark the first three-dimensional display patch that is pasted incorrectly.

[0060] Further, combined with 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 provided between the two transverse guide rails 91. The lifter 63 of the marking mechanism 6 is slidably installed 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 and right translational motion between the two transverse guide rails 91; a stepper motor is provided in the longitudinal guide rail 92 to drive the lifter 63 to perform reciprocating front and back translational motion in the longitudinal guide rail 92.

[0061] The marking mechanism 6 reciprocates and rotates at a fixed angle α between the marking platform 66 above the three-dimensional display module 8. The marking platform 66 is loaded with red glue or colored pigment.

[0062] When the rotator 64 drives the swing arm 61 to rotate to the marking table 66, the lifter 63 drives the swing arm 61 downward, and absorbs the red glue or colored pigment in the marking table 66 through the glue dispensing head 62. Then the lifter 63 drives the swing arm 61 upward, and the rotator 64 drives the swing arm 61 to rotate to a suitable angle. The two stepper motors respectively drive the longitudinal guide rail 92 to move left and right and drive the lifter 63 to move forward and backward, driving the adjustment of the position of the swing arm 61 and the glue dispensing head 62 until it rotates to the first three-dimensional display patch above the three-dimensional display module 8. The lifter 63 drives the swing arm 61 downward, and glue or paint is dispensed to the first three-dimensional display patch through the glue dispensing head 62. The marked first three-dimensional display patch 65 is shown in FIG. Figure 5 shown.

[0063] Repeat the above marking steps until all the first three-dimensional display tiles that are pasted incorrectly are marked.

[0064] Furthermore, the marked three-dimensional display module 8 is transferred out of the carrier 1. The first three-dimensional display patch with the error of pasting is further corrected according to the mark, and the corrected three-dimensional display module 8 is cured. Among them, natural curing, heat curing and light curing can be used. It should be noted that when heat curing is used, the curing temperature should be lower than 90°C to avoid damage to the three-dimensional display patch due to excessive temperature.

[0065] Corresponding to the detection method for a three-dimensional display module in the above embodiment, the embodiment of the present application further provides a detection device for a three-dimensional display module. For ease of explanation, only the parts related to the embodiment of the present application are shown.

[0066] like Figures 2 to 6As shown, the detection equipment includes a carrier 1, a detection host 2 arranged on the carrier 1, an electric guide rail 3, an operating table 4, a lens group 5, a marking mechanism 6, a power module and a signal source module arranged inside the carrier 1, and a transmission mechanism 7 arranged on the left and right sides of the carrier 1; wherein the lens group 5 includes a measuring lens 51 and a positioning lens 52.

[0067] In this embodiment, the transmission mechanism 7 is used to transmit the three-dimensional display module 8; the power module is used to supply power to the three-dimensional display module 8; the signal source module is used to provide a display signal to the three-dimensional display module 8; the measuring lens 51 is used to measure the illuminance of the three-dimensional display module 8 and take a picture to obtain a lighting image; the detection host 2 is used to analyze the lighting image to determine whether the three-dimensional display patch on the three-dimensional display module 8 is pasted incorrectly; if it is pasted incorrectly, the first three-dimensional display patch that is pasted incorrectly is identified from multiple three-dimensional display patches according to the lighting image; the positioning lens 52 is used to position the three-dimensional display module 8 and take a picture to obtain a positioning image; the detection host 2 is also used to calculate the coordinates of the first three-dimensional display patch based on 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.

[0068] Furthermore, the marking mechanism 6 includes a swing arm 61, a dispensing head 62 arranged below the front end of the swing arm 61, and a lifter 63 and a rotator 64 arranged 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.

[0069] Furthermore, the detection device also includes a moving mechanism 9 arranged below the detection host 2. The moving mechanism 9 includes two transverse guide rails 91 and a longitudinal guide rail 92 arranged between the two transverse guide rails 91. The lifter 63 of the marking mechanism 6 is slidably installed below the longitudinal guide rail 92. A stepper motor is arranged in the transverse guide rail 91 to drive the longitudinal guide rail 92 to make a reciprocating left and right translation movement between the two transverse guide rails 91; a stepper motor is arranged in the longitudinal guide rail 92 to drive the lifter 63 to make a reciprocating front and back translation movement in the longitudinal guide rail 92.

[0070] Furthermore, the measuring lens 51 includes a measuring body 511, a conversion disk 512 and a plurality of polarized lenses 513 arranged on the conversion disk 512; the types of the plurality of polarized lenses 513 are respectively: left-handed circularly polarized lens, right-handed circularly polarized lens, a first linearly polarized lens and a second linearly polarized lens; wherein the polarization direction of the first linearly polarized lens and the polarization direction of the second linearly polarized lens form an angle of 90 degrees.

[0071] It should be noted that other technical features of the above-mentioned detection device for three-dimensional display modules are the same as the features disclosed in the above-mentioned method embodiments, and can be referred to the description in the above-mentioned corresponding method embodiments, which will not be repeated here.

[0072] Based on the same inventive concept, the present application also provides a computer-readable storage medium storing a computer program, which can be executed by a processor to implement the above-mentioned detection method for a three-dimensional display module.

[0073] See also Fig. 9 , if the above-mentioned integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium 300. Based on this understanding, the technical solution of the present application is essentially 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, and the computer software product is stored in a storage medium, including several instructions / computer programs to enable an IoT device (which can be a personal computer, server, or network terminal, etc.) or a processor (processor) to execute all or part of the steps of each implementation method of the present application. The aforementioned storage medium includes: various media such as USB flash drives, mobile hard drives, read-only memories (ROM, Read-Only Memory), random access memories (RAM, Random Access Memory), magnetic disks or optical disks, and electronic terminals such as computers, mobile phones, laptops, tablet computers, cameras, etc. having the above-mentioned storage media.

[0074] The description of the execution process of the program data in the computer-readable storage medium can refer to the description in the above-mentioned method embodiments of the present application, and will not be repeated here.

[0075] It can be seen that the present invention discloses a detection method, device and medium for a three-dimensional display module, the method comprising the steps of: transferring the three-dimensional display module to be detected to a carrier, and energizing the three-dimensional display module; measuring the illumination of the three-dimensional display module through a measuring lens and photographing it to obtain an illumination image; analyzing the illumination image to determine whether the three-dimensional display patch on the three-dimensional display module is pasted incorrectly; if pasted incorrectly, identifying the first three-dimensional display patch pasted incorrectly from multiple three-dimensional display patches according to the illumination image; positioning and photographing the three-dimensional display module through a positioning lens to obtain a positioning image; calculating and obtaining the coordinates of the first three-dimensional display patch according to the positioning image; and controlling the marking mechanism to mark the first three-dimensional display patch according to the coordinates of the first three-dimensional display patch. The present invention can automatically detect the processed three-dimensional display module, accurately identify the three-dimensional display patch pasted incorrectly and mark it, and even if the lamp beads on the three-dimensional display module have the characteristics of high density and small spacing, they can be quickly and accurately identified without manual detection. It not only effectively improves the detection efficiency and accuracy, but also improves the production efficiency, significantly improves the finished product yield of the 3D display module, reduces production costs, and saves human resources.

[0076] The above descriptions are merely embodiments of the present invention and are not intended to limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's specification and drawings, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A detection method for a three-dimensional display module, characterized in that: Includes steps: The three-dimensional display module to be inspected is transferred to the stage, and the three-dimensional display module is powered on; Measuring and photographing the illumination of the three-dimensional display module through a measuring lens to obtain an illumination image; Analyze the illumination image to determine whether the 3D display patch on the 3D display module is pasted incorrectly; if it is pasted incorrectly, identify a first 3D display patch that is pasted incorrectly from the plurality of 3D display patches according to the illumination image; The three-dimensional display module is positioned and photographed by a positioning lens to obtain a positioning image; and the coordinates of the first three-dimensional display patch are calculated based on the positioning image; According to the coordinates of the first three-dimensional display tile, a marking mechanism is controlled to mark the first three-dimensional display tile.

2. The detection method for a three-dimensional display module according to claim 1, characterized in that: After the step of transferring the three-dimensional display module to be detected to the carrier and powering on the three-dimensional display module, the method further includes the following steps: Adjust 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 polarized lenses arranged on the conversion disk; The conversion disk is rotated to select the corresponding polarized lens and place it directly below the measuring subject.

3. The detection method for a three-dimensional display module according to claim 2, characterized in that: The three-dimensional display patch includes a left-handed circular deflection patch and a right-handed circular deflection patch; Alternatively, the three-dimensional display patch includes a first linear polarization patch and a second linear polarization patch, and the polarization direction of the first linear polarization patch and the polarization direction of the second linear polarization patch form an angle of 90 degrees.

4. The detection method for a three-dimensional display module according to claim 3, characterized in that: Four polarized lenses are arranged on the conversion disk, and the types of the four polarized lenses are: left-handed circularly polarized lens, right-handed circularly polarized lens, first linear polarized lens and second linear polarized lens; wherein the polarization direction of the first linear polarized lens and the polarization direction of the second linear polarized lens form an angle of 90 degrees.

5. The detection method for a three-dimensional display module according to claim 3, characterized in that: The left-handed circular deflection patches and the right-handed circular deflection patches are evenly distributed in a checkerboard pattern on the three-dimensional display module; or, the left-handed circular deflection patches and the right-handed circular deflection patches are alternately distributed horizontally or vertically in the shape of long strips on the three-dimensional display module; Alternatively, the first linear polarization patch and the second linear polarization patch are evenly distributed in a checkerboard pattern on the three-dimensional display module; or, the first linear polarization patch and the second linear polarization patch are alternately distributed horizontally or vertically in a strip shape on the three-dimensional display module.

6. The detection method for a three-dimensional display module according to claim 1, characterized in that: Also includes next steps: Transmitting the marked three-dimensional display module out of the carrier; The incorrectly pasted first three-dimensional display patch is corrected according to the mark, and the corrected three-dimensional display module is solidified.

7. A detection device for a three-dimensional display module, characterized in that: It includes a platform, a detection host, an electric guide rail, an operating table, a lens group, a marking mechanism arranged on the platform, a power module and a signal source module arranged inside the platform, and a transmission mechanism arranged on the left and right sides of the platform; wherein the lens group includes a measuring lens and a positioning lens; The transmission mechanism is used to transmit 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 a display signal for the three-dimensional display module; The measuring lens is used to measure and photograph the illumination of the three-dimensional display module to obtain an illumination image; The detection host is used to analyze the illumination image to determine whether the 3D display patch on the 3D display module is pasted incorrectly; if it is pasted incorrectly, identify the first 3D display patch pasted incorrectly from the plurality of 3D display patches according to the illumination image; The positioning lens is used to position and photograph the three-dimensional display module to obtain a positioning image; The detection host is further used to calculate the coordinates of the first three-dimensional display patch according to the positioning image; and is also used to control the marking mechanism to mark the first three-dimensional display patch according to the coordinates of the first three-dimensional display patch.

8. The detection device for a three-dimensional display module according to claim 7, characterized in that: The marking mechanism includes a swing arm, a dispensing head arranged below the front end of the swing arm, and a lifter and a rotator arranged 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.

9. The detection device for a three-dimensional display module according to claim 7, characterized in that: The measuring lens includes a measuring body, a conversion disk and a plurality of polarized lenses arranged on the conversion disk; the types of the plurality of polarized lenses are respectively: left-handed circularly polarized lens, right-handed circularly polarized lens, a first linearly polarized lens and a second linearly polarized lens; wherein the polarization direction of the first linearly polarized lens and the polarization direction of the second linearly polarized lens form an angle of 90 degrees.

10. A computer-readable storage medium storing a computer program, characterized in that: When the computer program is executed by a processor, the steps of the method according to any one of claims 1 to 6 are implemented.

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