Display panel detection device and detection method thereof

Abstract

An embodiment of the present invention provides a display panel detection device and a detection method thereof. In the device layout, a crack detection unit cooperates with a first conveying arm and a first detection platform, an indentation detection unit cooperates with a second conveying arm, a second detection platform, and a third detection platform, and the third conveying unit cooperates with a transportation unit, and is compatible with crack detection and indentation detection functions. Through a first isolation part, a second isolation part, and a third isolation part, a three-stage external and internal isolation scheme is used to suppress the jitter of the device and improve the accuracy and rhythm. Through a self-learning system, the first imaging and the second imaging are quickly judged to be in an undesirable state.

Description

Technical Field

[0001] The present application relates to the technical field of display panel detection, and in particular to a display panel detection device and a detection method thereof. Background Art

[0002] With the continuous development of display technology, the application fields of display panels are becoming more and more extensive. The current mainstream display panels are manufactured on motherboards and then cut. During the cutting process, cracks may occur on the edge of the display substrate. As the use time increases, the cracks may spread to the inside of the display panel, thus affecting the service life of the display panel.

[0003] On the other hand, after the anisotropic conductive adhesive is attached to the upper object and the lower plate for precise alignment and bonding, the insulating adhesive is cured after heating and pressurizing for a period of time, and a stable structure with vertical conduction and horizontal insulation can be formed. However, when the anisotropic conductive adhesive is pressed, uneven or insufficient pressure will lead to insufficient number and uneven distribution of deformed conductive particles that can conduct between the upper object and the lower plate, resulting in poor conductivity.

[0004] Therefore, in order to avoid the above situation, when the anisotropic conductive film is adhered, it is usually necessary to perform indentation detection on the conductive particles to determine the conductivity. At the same time, crack detection cannot be ignored. In the prior art, the detection equipment generally only has an indentation detection function and is not compatible with crack detection. In addition, the display panels for indentation detection and crack detection are mostly single-sided detection, and the device has a large jitter, which affects the detection accuracy and production efficiency. Summary of the invention

[0005] The present invention provides a display panel detection device and method thereof, so as to solve the technical problems existing in the prior art that crack detection and indentation detection are incompatible, the problem of unilateral detection of display panels, and the problem of vibration suppression of the device.

[0006] To solve the above problems, the technical solution adopted by the present invention is:

[0007] The present invention provides a display panel detection device, comprising an upper frame and a lower frame, wherein the upper frame is located above the lower frame, and a gantry bracket is provided on the upper frame, and a first conveying unit, a second conveying unit, and a third conveying unit for conveying a display surface are mounted on the bracket;

[0008] A crack detection unit for detecting the crack state of the display panel and an indentation detection unit for detecting the indentation state of the display panel are installed at the rear of the upper frame; a first detection platform for carrying the display panel and performing correction is provided in front of the crack detection unit, a second detection platform and a third detection platform for carrying the display panel and performing correction are provided in parallel on one side of the first detection platform, a conveying unit for placing defective display panels is provided in parallel on one side of the third detection platform, the first detection platform cooperates with the crack detection unit to complete crack detection, and the second detection platform and the third detection platform cooperate with the indentation detection unit to complete indentation detection.

[0009] Furthermore, a first seismic isolation part for isolating external high-frequency seismic sources is provided under the frame, and the first seismic isolation part is provided with a plurality of seismic isolation foot cups that can bear the weight of the equipment; a second seismic isolation part for isolating internal seismic sources is provided at the connection between the upper frame and the lower frame, and the second seismic isolation part is provided with an integrated marble base, and a crack detection unit, an indentation detection unit, a first detection platform, a second detection platform, a third detection platform, and a conveying unit are fixedly installed on the upper surface of the base; a third seismic isolation part for isolating external low-frequency seismic sources is provided at the connection between the base and the lower frame, and the third seismic isolation part is provided with a seismic isolation pad.

[0010] Furthermore, the first detection platform includes a second moving part that can move along the Y direction, a first rotating part that can rotate the Q axis is provided above the second moving part, the first rotating part includes a motor and a reducer, and the output end of the motor is connected to the reducer; a horizontal adjustment plate is provided above the reducer, and a first adsorption stage for adsorbing the display panel is provided on the horizontal adjustment plate;

[0011] The first adsorption platform is provided with a first layer and a second layer, the first layer is provided with an adsorption groove, and the second layer is provided with a plurality of second suction cups invertedly, and the adsorption groove and the second suction cups adsorb the display panel simultaneously;

[0012] The first adsorption carrier is also provided with a support plate for supporting the FPC. The support plate is connected to the first adsorption carrier through a side plate, and a photographing area is reserved between the support plate and the adsorption carrier.

[0013] Preferably, the second detection platform includes a second adsorption stage for adsorbing the display panel, a third moving part for moving the second adsorption stage, and a second rotating part for rotating the second adsorption stage; the third moving part is located above the base, the second rotating part is located above the third moving part, and the second adsorption stage is located above the second rotating part;

[0014] The third detection platform includes a third adsorption platform for adsorbing the display panel, a fourth movable part for moving the third adsorption platform, and a third rotating part for rotating the third adsorption platform; the fourth movable part is located above the base, the third rotating part is located above the fourth movable part, and the third adsorption platform is located above the third rotating part.

[0015] Furthermore, the first transport unit includes a first transport arm, a barcode scanning component for reading the display panel is installed on the left side of the first transport arm, and a positioning camera component for positioning the display panel is installed on the right side of the first transport arm;

[0016] The first transport arm is provided with an adsorption assembly for adsorbing the display panel, the adsorption assembly comprising a first profile frame, a second profile frame, a first suction cup, and a striped handle placed on both sides, the first profile frames are connected by the second profile frame, the first profile frame and the second profile frame are provided with a rectangular groove area, the groove area is provided with a plurality of mounting parts for mounting the first suction cup, and the mounting parts are mounted in the groove area through the striped handle;

[0017] The second transport unit comprises a second transport arm, and a calibration camera assembly for calibrating the display panel is provided on the right side of the second transport arm;

[0018] The third transport unit includes a third transport arm, and a seventh moving part is provided on the bracket. The seventh moving part drives the first transport arm to adsorb the display panel and move it to the first adsorption platform; the seventh moving part drives the second transport arm to adsorb the display panel and move it from the first adsorption platform to the second adsorption platform and the third adsorption platform; the seventh moving part drives the third transport arm to adsorb the display panel and selectively move it to the first adsorption platform or the second adsorption platform, the third adsorption platform to reach the conveying unit or the downstream equipment.

[0019] Furthermore, the crack detection unit includes a first moving part located below the first detection platform, the first moving part is provided with a first image acquisition part for photographing and image processing, and a first height measuring part for measuring height; the first height measuring part includes a first height measuring piece and a first controller, the first height measuring piece is used to measure the height from the upper surface of the first height measuring piece to the bonding area of ​​the display panel in real time; the first height measuring piece feeds back the measured height information to the first controller, the first controller feeds back the information to the first moving part, the image formed by the first image acquisition part is the first image, the first moving part drives the first image acquisition part to move in the photographing area along the X direction and the Z direction, the first image acquisition part automatically focuses and moves to the clearest photographing position to perform line scanning photography to form a first image, after the first image acquisition is completed, the first adsorption stage is rotated and moved by the first rotating part and the second moving part, and the second surface bonding area of ​​the display panel is moved to above the first image acquisition part to form the next first image.

[0020] Preferably, the indentation detection unit includes a second image acquisition unit for acquiring an indentation image, a sixth moving unit for moving the second image acquisition unit, and a second height measuring unit for measuring the height of a display panel bonding area on the second adsorption platform and the third adsorption platform, the second height measuring unit includes a second height measuring piece and a second controller, the second height measuring piece is located on one side of the second image acquisition unit or is installed in the upper middle part of the second image acquisition unit, the second controller is used to feed back the height information measured by the second height measuring piece to the second controller, the second controller feeds back the information to the sixth moving unit, the sixth moving unit drives the second image acquisition unit and the second height measuring piece to move successively to the bottom of the display panel bonding area on the second adsorption platform and the third adsorption platform, the second image acquisition unit takes a picture of the first surface bonding area by line scanning to form a second image, the second adsorption platform and the third adsorption platform are rotated by the third moving unit and the fourth moving unit, the second surface bonding area is rotated to the bottom of the second image acquisition unit, the second image acquisition unit takes a picture of the second surface bonding area by line scanning to form the next second image.

[0021] Furthermore, the conveying unit includes a driving part, a driven roller, an active roller and a conveyor belt, the driving part is connected to the active roller, the conveyor belt is wrapped around the active roller and the driven roller, and is tightened by the active roller and the driven roller, and the conveyor belt is connected in parallel with a gap between the conveyor belts;

[0022] The conveying unit also includes a fifth movable part that can pull out the conveyor belt, and the fifth movable part includes a third profile frame, a fourth profile frame, a fifth profile frame, a sixth profile frame, a guide rail, a mounting plate, and a handle. The third profile frame is connected to both sides of the driven roller and the active roller, the third profile frame is vertically connected to the fourth profile frame, the fifth profile frame is vertically connected to the inner side of the fourth profile frame, a mounting plate is provided below the connection between the bottom of the fourth profile frame and the fifth profile frame, a guide rail is provided below the mounting plate, and a sixth profile frame is provided below the guide rail. There are multiple third profile frames, fourth profile frames, fifth profile frames, and sixth profile frames, and the handle is connected to the third profile frame and is located in front of the driven roller;

[0023] The conveying unit also includes a first detection part, a second detection part, and a third detection part. The first detection part is located in the gap in the middle of the conveyor belt and is larger than the length of a single display panel. The first detection part is used to detect whether there is a display panel on the conveyor belt and count the number of defective display panels; the second detection part is parallel to the first detection part and is located at the end of the conveyor belt. The second detection part is used to detect whether there is full material and stacking; the third detection part is located on the fifth profile rack at the rear end and is used to detect the pull-out state and reset state of the conveyor belt;

[0024] The conveying unit also includes a first buffer, a second buffer, and a magnetic member. The first buffer is located in front of the fifth profile frame. When the handle is pulled out through the guide rail, it can be buffered by the first buffer. The second buffer is located behind the fifth profile frame. A buffer plate is also fixed on the fifth profile frame. When the handle is reset backward, the buffer plate directly contacts the second buffer for buffering. A magnetic plate is also provided on one side of the buffer plate. When reset, the magnetic member is attracted to the magnetic plate.

[0025] Further, a detection method of a display panel detection device includes a self-learning system;

[0026] The first image acquisition unit and the second image acquisition unit respectively acquire data of the first image and the second image and transmit the data to the self-learning system;

[0027] The self-learning system pre-processes the first image, collects a large amount of length and width data of cracks in the first image, and forms a crack database;

[0028] The self-learning system pre-processes the second image, collects a large amount of data on the shape and size of the indentations in the second image, and forms an indentation database;

[0029] The self-learning system determines whether the cracks and indentations of the display panel to be detected are within the range based on the crack database and the indentation database.

[0030] Preferably, the display panel detection method includes:

[0031] S1. The first transport arm picks up the display panel from the upstream device by suction, and after the barcode scanning component scans and reads the barcode of the display panel, it is transported to the first adsorption stage and positioned by the positioning camera component;

[0032] S2, the second moving part moves the display panel to above the first image acquisition part, the first height measuring part measures the height from the bottom surface of the display panel to the first height measuring part, and after the first movement is adjusted through information feedback from the first controller, the first image acquisition part collects the first image;

[0033] S3, after the crack detection of the first bonding area of ​​the display panel is completed, the display panel on the first adsorption stage is rotated by the first rotating part, so that the second bonding area of ​​the display panel is located above the first image acquisition part, and a second crack detection is performed;

[0034] S4, the self-learning system judges the first image. If it is judged to be defective, the third transport arm transports the display panel placed on the first adsorption stage to the conveyor belt; if it is judged to be qualified, the second transport arm transports the display panel placed on the first adsorption stage to the second adsorption stage or the third adsorption stage;

[0035] S5, the second transport arm places the display panel on the second adsorption stage or the third adsorption stage, and then calibrates it through the calibration camera assembly. After calibration, it moves to the top of the second image acquisition unit through the third moving unit, and the second height measuring unit measures the height from the bottom surface of the display panel to the second height measuring unit. After the information is fed back by the second controller and the sixth moving unit is adjusted, the second image acquisition unit collects the first image.

[0036] S6, after the indentation detection of the first-side bonding area of ​​the display panel is completed, the second adsorption stage and the display panel on the third adsorption stage are rotated by the second rotating part and the third rotating part, so that the second-side bonding area of ​​the display panel is located above the second image acquisition part, and a second indentation detection is performed;

[0037] S7. The self-learning system judges the second image. If it is judged to be defective, the third conveying arm will convey the display panel placed on the second adsorption platform or the third adsorption platform to the conveyor belt; if it is judged to be qualified, the third conveying arm will convey the display panel placed on the second adsorption platform or the third adsorption platform to the downstream equipment.

[0038] Compared with the prior art, the present invention has the following beneficial effects:

[0039] The present invention provides a display panel detection device and a method thereof. In the device layout, a crack detection unit cooperates with a first conveying arm and a first detection platform, an indentation detection unit cooperates with a second conveying arm, a second detection platform and a third detection platform, and a third conveying unit cooperates with a conveying unit, so as to be compatible with crack detection and indentation detection functions. Through a first isolation part, a second isolation part and a third isolation part, a three-stage external and internal isolation scheme is used to suppress the jitter of the device and improve the accuracy and rhythm. Through a self-learning system, the first imaging and the second imaging bad states are quickly judged. BRIEF DESCRIPTION OF THE DRAWINGS

[0040] In order to more clearly illustrate the technical solution proposed in the present invention, it is described in detail below in combination with the embodiments and drawings. It should be understood that the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, these drawings can be changed under the concept of the present invention.

[0041] Figure 1 An assembly perspective view of an embodiment of a display panel detection device provided by the present invention;

[0042] Figure 2 An assembly perspective view of an embodiment of a support provided by the present invention;

[0043] Figure 3 An assembly stereogram of an embodiment of a crack detection unit provided by the present invention;

[0044] Figure 4An assembly stereogram of an embodiment of an indentation detection unit provided by the present invention;

[0045] Figure 5 An assembly stereogram of an embodiment of a first detection platform provided by the present invention;

[0046] Figure 6 The present invention is a three-dimensional assembly diagram of an embodiment of a conveying unit provided by the present invention.

[0047] 1. Bracket; 10. First transport arm; 100. First profile rack; 101. Second profile rack; 102. First suction cup; 11. Scanning assembly; 12. Positioning camera assembly; 13. Second transport arm; 14. Calibration camera assembly; 15. Third transport arm; 16. Seventh moving part; 2. Crack detection unit; 21. First image acquisition unit; 22. First moving part; 23. First height measuring unit; 3. Indentation detection unit; 31. Second image acquisition unit; 32. Sixth moving part; 33. Second height measuring unit; 4. First detection Platform; 40, first rotating part; 41, second moving part; 42, horizontal adjustment plate; 43, first adsorption carrier; 44, support plate; 45, side plate; 5, conveying unit; 50, driving part; 51, active roller; 52, driven roller; 53, conveyor belt; 54, first buffer; 55, second buffer; 56, magnetic part; 57, third profile rack; 58, fourth profile rack; 59, fifth profile rack; 60, guide rail; 61, sixth profile rack; 62, handle; 6, second detection platform; 7, third detection platform; 8, base. DETAILED DESCRIPTION

[0048] The technical solutions in the embodiments will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Similar component numbers in the drawings represent similar components. Obviously, the embodiments described below are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0049] It should be understood that when used in this specification, the terms "include" and "comprising" indicate the presence of described features, integers, steps, operations, elements and / or components, but do not exclude the presence or addition of one or more other features, integers, steps, operations, elements, components and / or collections thereof.

[0050] It should also be understood that the terms used in this description of the embodiments of the present invention are only for the purpose of describing specific embodiments and are not intended to limit the embodiments of the present invention. As used in the description of the embodiments of the present invention, unless the context clearly indicates otherwise, the singular forms of "a", "an" and "the" are intended to include plural forms.

[0051] A display panel detection device and method provided by an embodiment of the present invention include an upper frame and a lower frame, wherein a first seismic isolation part for isolating external high-frequency seismic sources is provided below the lower frame, and the first seismic isolation part is provided with a plurality of seismic isolation foot cups that can bear the weight of the equipment; a second seismic isolation part for isolating internal seismic sources is provided at the connection between the upper frame and the lower frame, and the second seismic isolation part is provided with an integrated marble base 8, and a crack detection unit 2, an indentation detection unit 3, a first detection platform 4, a second detection platform 6, a third detection platform 7, and a conveying unit 5 are fixedly installed on the upper surface of the base 8; a third seismic isolation part for isolating external low-frequency seismic sources is provided at the connection between the base 8 and the lower frame, and the third seismic isolation part is provided with a seismic isolation pad.

[0052] Please also read Figure 1 In this embodiment, the bracket 1 is provided with a first conveying unit, which includes a first conveying arm 10. A code scanning component 11 for reading a display panel is installed on the left side of the first conveying arm 10. The first conveying arm 10 absorbs the display panel and moves it to the code scanning position through the seventh moving part 16. After the display panel is identified by the code scanning component 11, the code is transmitted to the self-learning system; a positioning camera component 12 for positioning the display panel is installed on the right side of the first conveying arm 10. After the first conveying arm 10 places the display panel on the first detection platform 4, the positioning camera component 12 takes a picture to complete the positioning;

[0053] Please also read Figure 2 The first transport arm 10 is equipped with an adsorption component for adsorbing the display panel, and the adsorption component includes a first profile frame 100, a second profile frame 101, a first suction cup 102, and a striped handle on both sides. The first profile frames 100 are connected by the second profile frame 101. The first profile frame 100 and the second profile frame 101 are provided with a rectangular groove area, and a plurality of mounting parts for mounting the first suction cup 102 are provided on the groove area. The mounting parts are installed in the groove area through the striped handle; the mounting parts are Z-shaped, and the length, width, and angle can be easily adjusted according to the size of the display panel through the striped handle.

[0054] Please also read Figure 5 The first detection platform 4 includes a second moving part 41 that can move along the Y direction, and a first rotating part 40 that can rotate along the Q axis is provided above the second moving part 41. The first rotating part 40 includes a motor and a reducer, and the output end of the motor is connected to the reducer; a horizontal adjustment plate 42 is provided above the reducer, and a first adsorption stage 43 for adsorbing the display panel is provided on the horizontal adjustment plate 42;

[0055] The first adsorption platform 43 is provided with a first layer and a second layer, the first layer is provided with an adsorption groove, and the second layer is provided with a plurality of second suction cups, and the adsorption groove and the second suction cup adsorb the display panel simultaneously; the first adsorption platform 43 is also provided with a support plate 44 for supporting the FPC, and the support plate 44 is connected to the first adsorption platform 43 through a side plate 45, and a photographing area is reserved between the support plate 44 and the first adsorption platform 43. After the first crack detection is completed in the first surface bonding area, the second surface bonding area is rotated by the first rotating part 40, and the first surface bonding area and the second surface bonding area extend out of the outer edges on both sides of the first adsorption platform 43, which is conducive to unobstructed photographing, and the second detection platform 6 and the third detection platform 7 also extend out of the outer edges on both sides of the second adsorption platform and the third adsorption platform.

[0056] Please also read Figure 3 The crack detection unit 2 includes a first moving part 22 located below the first detection platform 4. The first moving part 22 is provided with a first image acquisition part 21 for photographing and image processing and a first height measuring part for measuring height. The first height measuring part includes a first height measuring component 23 and a first controller. The first height measuring component 23 is used to measure the height from the upper surface of the first height measuring component 23 to the lower surface of the bonding area of ​​the display panel in real time. The first height measuring component 23 feeds back the measured height information to the first controller, and the first controller feeds back the information to the first moving part 22. The image formed by the first image acquisition part 21 is the first image. The first moving part 22 drives the first image acquisition part 21 to move in the photographing area along the X direction and the Z direction. The first image acquisition part 21 automatically focuses and moves to the clearest photographing position to perform line scanning photography to form a first image. After the first image is acquired, the first adsorption stage 43 rotates and moves through the first rotating part 40 and the second moving part 41 to move the second surface bonding area of ​​the display panel to the top of the first image acquisition part 21 to form the next first image. The first height measuring component 23 and the second height measuring component 33 can be laser altimeters.

[0057] The support 1 is mounted with a third transport unit, which includes a third transport arm 15 and moves in the X direction through a seventh moving part 16 .

[0058] Please also read Figure 6 The conveying unit 5 includes a driving unit 50, a driven roller 52, an active roller 51 and a conveying belt 53. The driving unit 50 is connected to the active roller 51. The conveying belt 53 is wrapped around the active roller 51 and the driven roller 52 and is tightened by the active roller 51 and the driven roller 52. A plurality of conveying belts 53 are connected in parallel, and a gap is left between the conveying belts 53.

[0059] The conveying unit 5 also includes a fifth movable part that can pull out the conveyor belt 53. The fifth movable part includes a third profile frame 57, a fourth profile frame 58, a fifth profile frame 59, a sixth profile frame 61, a guide rail 60, a mounting plate, and a handle 62. The third profile frame 57 is connected to both sides of the driven roller 52 and the active roller 51. The third profile frame 57 is vertically connected to the fourth profile frame 58. The fifth profile frame 59 is vertically connected to the inner side of the fourth profile frame 58. A mounting plate is provided below the connection between the bottom of the fourth profile frame 58 and the fifth profile frame 59. A guide rail 60 is provided below the mounting plate. A sixth profile frame 61 is provided below the guide rail 60. There are multiple third profile frames 57, fourth profile frames 58, fifth profile frames 59, and sixth profile frames 61. The handle 62 is connected to the third profile frame 57 and is located in front of the driven roller 52.

[0060] The conveying unit 5 also includes a first detection part, a second detection part, and a third detection part. The first detection part is located in the gap in the middle of the conveyor belt 53 and is larger than the length of a single display panel. The first detection part is used to detect whether there is a display panel on the conveyor belt 53 and count the number of defective display panels; the second detection part is parallel to the first detection part and is located at the end of the conveyor belt 53. The second detection part is used to detect whether it is full and stacked; the third detection part is located on the fifth profile frame 59 at the rear end, and is used to detect the pulled-out state and reset state of the conveyor belt 53;

[0061] The conveying unit 5 also includes a first buffer 54, a second buffer 55, and a magnetic member 56. The first buffer 54 is located in front of the fifth profile frame 59. When the handle 62 is pulled out through the guide rail 60, it can be buffered by the first buffer 54; the second buffer 55 is located behind the fifth profile frame 59, and a buffer plate is also fixed on the fifth profile frame 59. When the handle 62 is reset backward, the buffer plate directly contacts the second buffer 55 for buffering to prevent damage caused by hard collision. The first buffer 54 and the second buffer 55 can be hydraulic buffers; a magnetic plate is also provided on one side of the buffer plate. When resetting, the magnetic member 56 is attracted to the magnetic plate. The magnetic member 56 can be a magnetic buckle to assist in resetting.

[0062] When the self-learning system recognizes that the first image of the bonding area on one side exceeds the shape in the crack database, the unqualified information is fed back to the third conveying unit. The third conveying arm 15 conveys the display panel on the first detection platform 4 to the conveyor belt 53 of the conveying unit 5. The self-learning system counts the display panels with poor crack detection.

[0063] In this embodiment, when the self-learning system determines through the crack database that the display panel on the first detection platform 4 has no cracks or the crack size is small and falls within the qualified range, the qualified information is fed back to the second conveying unit;

[0064] Please also read Figure 2A second transport unit is installed on the bracket 1, and the second transport unit includes a second transport arm 13. A calibration camera assembly 14 for calibrating the display panel is provided on the right side of the second transport arm 13. The second transport arm 13 moves in the X direction through the seventh moving part 16 to sequentially transport the display panel from the first inspection platform 4 to the second inspection platform 6 and the third inspection platform 7 for photographic calibration. The second inspection platform 6 and the third inspection platform 7 have the same function as the first inspection platform 4.

[0065] Please also read Figure 4 The indentation detection unit 3 includes a second image acquisition unit 31 for acquiring an indentation image, a sixth moving unit 32 for moving the second image acquisition unit 31, and a second height measuring unit for measuring the height of the display panel bonding area on the second adsorption stage and the third adsorption stage. The second height measuring unit includes a second height measuring piece 33 on the second controller. The second height measuring piece 33 is located on one side of the second image acquisition unit 31 or is installed in the middle and upper part of the second image acquisition unit 31. The second controller is used to feed back the height information measured by the second height measuring piece 33 to the second controller. The second controller feeds back the information to the sixth moving unit 32. The sixth moving unit 32 drives the second image acquisition unit 31 and the second height measuring piece 33 to move to the bottom of the display panel bonding area on the second adsorption stage and the third adsorption stage in sequence. The second image acquisition unit 31 takes a picture of the first surface bonding area by line scanning to form a second image. The second adsorption stage and the third adsorption stage are rotated by the third moving unit and the fourth moving unit to rotate the second surface bonding area to the bottom of the second image acquisition unit 31. The second image acquisition unit 31 takes a picture of the second surface bonding area by line scanning to form the next second image.

[0066] When the self-learning system identifies that the number of conductive balls in the second image of the bonding area of ​​one side does not reach the minimum number of conductive balls in the indentation database, does not reach the minimum strength value and the minimum distribution value of the conductive balls, and exceeds the minimum deviation value, the unqualified information is fed back to the third conveying unit, and the third conveying arm 15 conveys the display panel on the second inspection platform 6 to the conveyor belt 53 of the conveying unit 5. The self-learning system counts the display panels with poor indentation detection.

[0067] In this embodiment, when the self-learning system determines through the indentation database that the display panel on the first inspection platform 4 has no cracks or the crack size is small and falls within the qualified range, the qualified information is fed back to the second conveying unit; the second conveying robot of the second conveying unit conveys the display panel from the first inspection platform 4 to the second inspection platform 6 and the third inspection platform 7 in sequence for indentation detection. When the self-learning system determines that the display panels of the second inspection platform 6 and the third inspection platform 7 have no obvious defects, the qualified information is fed back to the third conveying unit, and the third conveying arm 15 conveys the display panels of the second inspection platform 6 and the third inspection platform 7 to the downstream equipment, and counts the number of qualified display panels.

Claims

1. A display panel testing device, comprising an upper frame and a lower frame, wherein the upper frame is located above the lower frame, a gantry bracket (1) is provided on the upper frame, and a first conveying unit, a second conveying unit, and a third conveying unit for conveying a display panel are mounted on the bracket (1); A crack detection unit (2) for detecting the crack state of the display panel and an indentation detection unit (3) for detecting the indentation state of the display panel are installed at the rear of the upper frame; a first detection platform (4) for carrying the display panel and performing correction is arranged in front of the crack detection unit (2); a second detection platform (6) and a third detection platform (7) for carrying the display panel and performing correction are arranged in parallel on one side of the first detection platform (4); a conveying unit (5) for placing unqualified display panels is arranged in parallel on one side of the third detection platform (7); the first detection platform (4) cooperates with the crack detection unit (2) to complete crack detection, and the second detection platform (6) and the third detection platform (7) cooperate with the indentation detection unit (3) to complete indentation detection.

2. The display panel detection device according to claim 1, characterized in that: A first seismic isolation part for isolating external large-frequency seismic sources is provided below the lower frame, and the first seismic isolation part is provided with a plurality of seismic isolation foot cups capable of bearing the weight of the equipment; a second seismic isolation part for isolating internal seismic sources is provided at the connection between the upper frame and the lower frame, and the second seismic isolation part is provided with an integrated marble base (8), and the crack detection unit (2), the indentation detection unit (3), the first detection platform (4), the second detection platform (6), the third detection platform (7), and the conveying unit (5) are fixedly mounted on the upper surface of the base (8); a third seismic isolation part for isolating external small-frequency seismic sources is provided at the connection between the base (8) and the lower frame, and the third seismic isolation part is provided with a seismic isolation pad.

3. The display panel detection device according to claim 1, characterized in that: The first detection platform (4) comprises a second movable part (41) movable along the Y direction, a first rotating part (40) rotatable about a Q axis is provided above the second movable part (41), the first rotating part (40) comprises a motor and a reducer, an output end of the motor is connected to the reducer; a horizontal adjustment plate (42) is provided above the reducer, and a first adsorption platform (43) for adsorbing the display panel is provided on the horizontal adjustment plate (42); The first adsorption platform (43) is provided with a first layer and a second layer, the first layer is provided with an adsorption groove, and the second layer is provided with a plurality of second suction cups, and the adsorption groove and the second suction cups adsorb the display panel simultaneously; The first adsorption platform (43) is also provided with a support plate (44) for supporting the FPC, the support plate (44) is connected to the first adsorption platform (43) via a side plate (45), and a photographing area is reserved between the support plate (44) and the first adsorption platform.

4. The display panel detection device according to claim 2, characterized in that: The second detection platform (6) comprises a second adsorption stage for adsorbing the display panel, a third moving part for moving the second adsorption stage, and a second rotating part for rotating the second adsorption stage; the third moving part is located above the base (8), the second rotating part is located above the third moving part, and the second adsorption stage is located above the third moving part; The third detection platform (7) includes a third adsorption platform for adsorbing the display panel, a fourth movable part for moving the third adsorption platform, and a third rotating part for rotating the third adsorption platform; the fourth movable part is located above the base (8), the third rotating part is located above the fourth movable part, and the third adsorption platform is located above the third rotating part.

5. The display panel detection device according to claim 4, characterized in that: The first transport unit comprises a first transport arm (10), a code scanning component (11) for reading a display panel is installed on the left side of the first transport arm (10), and a positioning camera component (12) for positioning the display panel is installed on the right side of the first transport arm (10); The first transport arm (10) is provided with an adsorption component for adsorbing the display panel, the adsorption component comprising a first profile frame (100), a second profile frame (101), a first suction cup (102), and a striped handle placed on both sides, the first profile frames (100) are connected via the second profile frame (101), the first profile frame (100) and the second profile frame (101) are provided with a rectangular groove area, the groove area is provided with a plurality of mounting parts for mounting the first suction cup (102), and the mounting parts are mounted on the groove area via the striped handle; The second transport unit comprises a second transport arm (13), and a calibration camera assembly (14) for calibrating the display panel is provided on the right side of the second transport arm (13); The third transport unit includes a third transport arm (15), and a seventh moving part (16) is provided on the bracket (1). The seventh moving part (16) drives the first transport arm to adsorb the display panel and move it to the first adsorption platform (43); the seventh moving part (16) drives the second transport arm (13) to adsorb the display panel and move it from the first adsorption platform (43) to the second adsorption platform and the third adsorption platform; the seventh moving part (16) drives the third transport arm (15) to adsorb the display panel and selectively move it to the first adsorption platform (43) or the second adsorption platform, the third adsorption platform, and then reaches the conveying unit (5) or the downstream equipment.

6. The display panel detection device according to claim 3, characterized in that: The crack detection unit (2) comprises a first moving part (22) located below the first detection platform (4); the first moving part (22) is provided with a first image acquisition part (21) for photographing and image processing, and a first height measuring part for measuring height; the first height measuring part comprises a first height measuring piece (23) and a first controller; the first height measuring piece (23) is used to measure in real time the height from the upper surface of the first height measuring piece (23) to the bonding area of ​​the display panel; the first height measuring piece (23) feeds back the measured height information to the first controller, and the first controller feeds back the information to the first moving part (22); The image formed by the first image acquisition unit (21) is a first image. The first moving unit (22) drives the first image acquisition unit (21) to move in the photographing area along the X direction and the Z direction. The first image acquisition unit (21) automatically focuses and moves to the clearest photographing position to perform line scanning photography to form the first image. After the first image is acquired, the first adsorption platform (43) rotates and moves through the first rotating unit (40) and the second moving unit (41) to move the second surface bonding area of ​​the display panel to above the first image acquisition unit (21) to form the next first image.

7. The display panel detection device according to claim 4, characterized in that: The indentation detection unit (3) comprises a second image acquisition unit (31) for acquiring an indentation image, a sixth moving unit (32) for moving the second image acquisition unit (31), and a second height measuring unit for measuring the height of the bonding area of ​​the display panel on the second adsorption platform and the third adsorption platform, wherein the second height measuring unit comprises a second height measuring piece (33) on the second controller, the second height measuring piece (33) being located on one side of the second image acquisition unit (31) or being installed in the middle and upper part of the second image acquisition unit (31), the second controller being used to feed back the height information measured by the second height measuring piece (33) to the second controller, and the second controller feeding back the height information To the sixth moving part (32), the sixth moving part (32) drives the second image acquisition part (31) and the second height measuring part (33) to move successively to the second adsorption platform and the third adsorption platform below the display panel bonding area, the second image acquisition part (31) takes a line scan picture of the first surface bonding area to form a second image, the second adsorption platform and the third adsorption platform are rotated through the third moving part and the fourth moving part to rotate the second surface bonding area to below the second image acquisition part (31), the second image acquisition part (31) takes a line scan picture of the second surface bonding area to form the next second image.

8. The display panel detection device according to claim 3, characterized in that: The conveying unit (5) comprises a driving part (50), a driven roller (52), a driving roller (51) and a conveying belt (53); the driving part (50) is connected to the driving roller (51); the conveying belt (53) is wrapped around the driving roller (51) and the driven roller (52), and is tightened by the driving roller (51) and the driven roller (52); a plurality of conveying belts (53) are connected in parallel, and gaps are left between the conveying belts (53); The conveying unit (5) also includes a fifth movable part capable of pulling out the conveying belt (53), the fifth movable part including a third profile frame (57), a fourth profile frame (58), a fifth profile frame (59), a sixth profile frame (61), a guide rail (60), a mounting plate, and a handle (62), the third profile frame (57) being connected to both sides of the driven roller (52) and the active roller (51), the third profile frame (57) being vertically connected to the fourth profile frame (58), and the fifth profile frame being connected to the fourth profile frame (58) is vertically connected inside, the mounting plate is provided below the connection between the bottom of the fourth profile frame (58) and the fifth profile frame (59), the guide rail (60) is provided below the mounting plate, the sixth profile frame (61) is provided below the guide rail (60), the third profile frame (57), the fourth profile frame (58), the fifth profile frame (59), and the sixth profile frame (61) are multiple, the handle (62) is connected to the third profile frame (57), and is located in front of the driven roller (52); The conveying unit (5) further comprises a first detection part, a second detection part, and a third detection part. The first detection part is located in the gap in the middle of the conveying belt (53) and is larger than the length of a single display panel. The first detection part is used to detect whether there is a display panel on the conveying belt (53) and to count the number of unqualified display panels. The second detection part is parallel to the first detection part and is located at the end of the conveying belt (53). The second detection part is used to detect whether there is full material and stacking. The third detection part is located on the fifth profile rack (59) at the rear end and is used to detect the pulled-out state and reset state of the conveying belt (53). The conveying unit (5) further comprises a first buffer component (54), a second buffer component (55), and a magnetic component (56); the first buffer component (54) is located in front of the fifth profile frame (59); when the handle (62) is pulled out through the guide rail (60), the first buffer component (54) can be used for buffering; the second buffer component (55) is located behind the fifth profile frame (59); a buffer plate is also fixed on the fifth profile frame (59); when the handle (62) is reset backward, the buffer plate directly contacts the second buffer component (55) for buffering; a magnetic plate is also provided on one side of the buffer plate; when reset, the magnetic component (56) is attracted to the magnetic plate.

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