Screen defect detection device and method

Abstract

The present invention discloses a screen defect detection device, including a support platform, a mechanical arm, an image detection head and an image processor, wherein one end of the mechanical arm is connected to the support platform, the image detection head is installed at the other end of the mechanical arm, the image detection head is electrically connected to the image processor, and a sliding guide mechanism for dissipating the heat of the image detection head to improve the detection accuracy is provided on the mechanical arm outside the image detection head. The screen defect detection device of the present invention accelerates the heat dissipation of the image detection head, ensures the normal operation of the image detection head, improves the detection accuracy of the image detection head, and thus improves the detection accuracy of screen defects. The present invention also discloses a screen defect detection method, which realizes defect detection on the produced screen and effectively improves the detection accuracy.

Description

Technical Field

[0001] The present invention relates to screen defect detection, and more particularly, to a screen defect detection device and method. Background Art

[0002] With the popularity of electronic products such as mobile phones and notebooks and their rapid replacement, there is a huge demand for the production of LCD screens and OLED screens on the production line. During the entire process of screen forming, due to raw materials, production processes, accidents, etc., there are often various defects on the screen, such as broken pieces, bubbles, scratches, missing corners, indentations, etc. These defective screens will affect their performance or reduce user experience and are not allowed to enter the market. Therefore, it is necessary to perform defect detection on the produced screens. During the detection, the existing screen defect detection device needs to run uninterruptedly for a long time, and heat dissipation cannot be guaranteed, resulting in low detection accuracy and cannot meet production needs. Summary of the invention

[0003] The technical problem to be solved by the present invention is to address the above-mentioned deficiencies in the prior art. One of its purposes is to provide a screen defect detection device to accelerate the heat dissipation of the image detection head, ensure the normal operation of the image detection head, and improve the detection accuracy of the image detection head, thereby improving the detection accuracy of screen defects.

[0004] The second purpose is to provide a screen defect detection method to realize defect detection on the produced screen and effectively improve the detection accuracy.

[0005] Technical solution 1 of the present invention is as follows: a screen defect detection device, comprising a support platform, a robotic arm, an image detection head and an image processor, one end of the robotic arm is connected to the support platform, the image detection head is installed at the other end of the robotic arm, the image detection head is electrically connected to the image processor, and a sliding guide mechanism is provided on the robotic arm outside the image detection head for dissipating heat from the image detection head to improve detection accuracy.

[0006] As a further improvement, the sliding guide mechanism includes a heat-conducting enclosure surrounding the outside of the image detection head, a movable sleeve mounted on the heat-conducting enclosure, a support enclosure arranged outside the heat-conducting enclosure to form a heat dissipation cavity, and an auxiliary heat dissipation portion arranged along the outer wall of the movable sleeve and slidably connected to the inner wall of the support enclosure; the support enclosure is connected to the robotic arm.

[0007] Furthermore, the auxiliary heat dissipation part includes an annular groove opened along the circumference of the movable sleeve, an annular airbag arranged along the annular groove and having a chamber, and a plurality of through holes penetrating the annular airbag and connected to the chamber. The circumferential outer end of the annular airbag extends out of the notch of the annular groove and abuts against the inner wall of the supporting enclosure.

[0008] Furthermore, the cross section of the annular airbag gradually narrows from the movable sleeve to the supporting enclosure side.

[0009] Furthermore, an arc-shaped protrusion is provided at the end of the annular airbag in contact with the supporting enclosure, and a friction plate is symmetrically provided on the arc-shaped protrusion.

[0010] Furthermore, the diameter of the through hole gradually increases from an end close to the chamber to an end far away from the chamber.

[0011] Furthermore, the groove bottom to the groove opening of the annular groove is gradually inclined and a flared opening is formed.

[0012] Furthermore, cushioning airbags are symmetrically arranged on the movable sleeve.

[0013] Furthermore, a plurality of spaced-apart limiting plates are provided at one end of the heat-conducting enclosure away from the robotic arm.

[0014] The second technical solution of the present invention is as follows: a screen defect detection method, the steps of the method are as follows:

[0015] S1, using the image detection head to obtain the image of the panel to be tested, and transmitting the image of the panel to be tested to the image processor;

[0016] S2, inputting the panel image to be inspected into the panel defect segmentation model of the image processor, so that the panel defect segmentation model performs convolution processing on the panel image to be inspected, and down-samples the convolution result for different times to obtain a number of down-sampling results;

[0017] S3, performing feature fusion on the data generated by dense connection of each downsampling result, obtaining and outputting the panel defect segmentation result;

[0018] In S1, when acquiring the image of the panel to be tested, the sliding guide mechanism is used to dissipate heat from the image detection head.

[0019] Beneficial Effects

[0020] Compared with the prior art, the present invention has the following advantages:

[0021] The screen defect detection device of the present invention arranges a sliding guide mechanism on a mechanical arm outside an image detection head. When detecting screen defects, the mechanical arm drives the image detection head to move for detection. During the movement of the mechanical arm, the movable sleeve will slide relative to the heat-conducting enclosure due to inertia under the combined action of its gravity and the swing force of the mechanical arm, causing the annular airbag to deform and discharge the air inside the annular airbag through the through hole, accelerating the air circulation in the heat dissipation cavity, thereby accelerating the heat dissipation of the image detection head, ensuring the normal operation of the image detection head, and improving the detection accuracy of the image detection head, thereby improving the detection accuracy of screen defects. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of the present invention;

[0023] Figure 2 It is an enlarged schematic diagram of the cross-sectional structure of the sliding guide mechanism in the present invention;

[0024] Figure 3 for Figure 2 A schematic diagram of the structure enlargement at the center A;

[0025] Figure 4 It is an enlarged schematic diagram of the bottom view structure of the sliding guide mechanism in the present invention.

[0026] Among them: 1-carrying platform, 2-mechanical arm, 3-image detection head, 4-image processor, 5-sliding guide mechanism, 6-buffer airbag, 7-limiting plate, 501-heat-conducting enclosure, 502-movable sleeve, 503-heat dissipation cavity, 504-support enclosure, 505-auxiliary heat dissipation part, 5051-annular groove, 5052-annular airbag, 5053-chamber, 5054-through hole, 5055-arc-shaped protrusion, 5056-friction plate, 5057-flaring. DETAILED DESCRIPTION

[0027] The present invention will be further described below with reference to the specific embodiments in the accompanying drawings.

[0028] See also Figure 1-4A screen defect detection device of the present invention includes a carrier 1, a mechanical arm 2, an image detection head 3 and an image processor 4, wherein one end of the mechanical arm 2 is connected to the carrier 1, the image detection head 3 is installed at the other end of the mechanical arm 2, the image processor 4 is installed in the mechanical arm 2, and the image detection head 3 is electrically connected to the image processor 4, and a sliding guide mechanism 5 for dissipating heat from the image detection head 3 to improve the detection accuracy is provided on the mechanical arm 2 outside the image detection head 3. Specifically, the sliding guide mechanism 5 includes a heat-conducting enclosure 501 surrounding the outside of the image detection head 3, a movable sleeve 502 mounted on the heat-conducting enclosure 501, a support enclosure 504 arranged on the outside of the heat-conducting enclosure 501 to form a heat dissipation cavity 503, and an auxiliary heat dissipation portion 505 arranged along the outer wall of the movable sleeve 502 and slidably connected to the inner wall of the support enclosure 504; wherein, the support enclosure 504 is connected to the robotic arm 2, the heat-conducting enclosure 501 is a heat-conducting plate attached to the outer wall of the image detection head 3, and is a cylindrical shell, which plays a role in protecting the image detection head 3, the heat-conducting enclosure 501 can be connected to the robotic arm 2, the movable sleeve 502 is movably mounted on the outer periphery of the heat-conducting enclosure 501, and the contact surface between the movable sleeve 502 and the heat-conducting enclosure 501 can be coated with lubricating oil to reduce friction and facilitate the sliding of the movable sleeve 502; the support enclosure 504 is a cylindrical shell, which also plays a role in protecting the image detection head 3, and also facilitates the sliding of the movable sleeve 502.

[0029] Preferably, a plurality of auxiliary heat dissipation parts 505 can be provided, and the auxiliary heat dissipation parts 505 include an annular groove 5051 opened along the circumference of the movable sleeve 502, an annular airbag 5052 provided along the annular groove 5051 and having a chamber 5053, and a plurality of through holes 5054 penetrating the annular airbag 5052 and connected with the chamber 5053. The circumferential outer end of the annular airbag 5052 extends out of the notch of the annular groove 5051 and abuts against the inner wall of the supporting enclosure 504; wherein the annular airbag 5052 is an elastomer and fits against the bottom of the annular groove 5051.

[0030] The screen defect detection device of the present invention is provided with a sliding guide mechanism 5 on the mechanical arm 2 outside the image detection head 3. When the screen defect is detected, the mechanical arm 2 drives the image detection head 3 to move for detection. During the movement of the mechanical arm 2, the movable sleeve 502 will slide relative to the heat-conducting enclosure 501 due to inertia under the combined action of its gravity and the swing force of the mechanical arm 2. The annular airbag 5052 abuts against the inner wall of the supporting enclosure 504 to form a frictional reciprocating damping motion, which causes the annular airbag 5052 to deform and discharge the air in the internal chamber 5053 of the annular airbag 5052 through the through hole 5054, thereby accelerating the air circulation in the heat dissipation cavity 503, thereby accelerating the heat dissipation of the image detection head 3, ensuring the normal operation of the image detection head 3, and improving the detection accuracy of the image detection head 3, thereby improving the detection accuracy of screen defects.

[0031] Preferably, the cross section of the annular airbag 5052 gradually narrows from the movable sleeve 502 to the supporting enclosure 504 side, so as to facilitate the deformation of the annular airbag 5052 after being subjected to force, thereby accelerating the air circulation in the heat dissipation cavity 503.

[0032] Preferably, an arc-shaped protrusion 5055 is provided at the end of the annular airbag 5052 in contact with the supporting enclosure 504, and a friction plate 5056 is symmetrically provided on the arc-shaped protrusion 5055. Through the design of the arc-shaped protrusion 5055 and the friction plate 5056, the resistance between the annular airbag 5052 and the supporting enclosure 504 is increased, so that the annular airbag 5052 is more likely to deform. Further, the friction plate 5056 is made of a rubber sheet and is respectively arranged on the upper and lower sides of the annular airbag 5052. When the annular airbag 5052 slides, due to the friction resistance generated between one side of the arc-shaped protrusion 5055 and the supporting enclosure 504, the one side of the arc-shaped protrusion 5055 in the annular airbag 5052 is subjected to a large force and deforms, and the degree of deformation gradually increases as the chamber 5053 is deflated, causing the friction plate 5056 to conflict with the supporting enclosure 504 and maintain the deformed state.

[0033] Preferably, the diameter of the through hole 5054 gradually increases from one end close to the chamber 5053 to one end away from the chamber 5053, so as to accelerate the air circulation inside the through hole 5054 after the annular airbag 5052 is deformed.

[0034] Preferably, the groove bottom to the groove opening of the annular groove 5051 is gradually inclined and is formed with an expansion opening 5057 , so that space for gas circulation is reserved in the annular groove 5051 .

[0035] Preferably, buffer airbags 6 are symmetrically arranged on the movable sleeve 502 . The number of buffer airbags 6 is four, which are respectively arranged at the top and the bottom of the movable sleeve 502 to prevent the movable sleeve 502 from rigidly colliding with the mechanical arm 2 or the limiting plate 7 .

[0036] Preferably, a plurality of spaced apart limit plates 7 are provided at one end of the heat-conducting enclosure 501 away from the robotic arm 2, and the spaced apart limit plates 7 will not completely block the heat dissipation cavity 503 to facilitate air circulation, and the design of the limit plates 7 can prevent the movable sleeve 502 from detaching from the heat dissipation cavity 503.

[0037] A screen defect detection method, the steps of the method are as follows:

[0038] S1, using the image detection head 3 to obtain the image of the panel to be tested, and transmitting the image of the panel to be tested to the image processor 4;

[0039] S2, inputting the panel image to be detected into the panel defect segmentation model of the image processor 4, so that the panel defect segmentation model performs convolution processing on the panel image to be detected, and downsampling the convolution result for different times to obtain a number of downsampling results;

[0040] S3, performing feature fusion on the data generated by dense connection of each downsampling result, obtaining and outputting the panel defect segmentation result;

[0041] In S1, when acquiring the image of the panel to be tested, the sliding guide mechanism 5 is used to dissipate heat from the image detection head 3, thereby realizing defect detection of the produced screen and effectively improving the detection accuracy.

[0042] The above is only a preferred embodiment of the present invention. It should be pointed out that for those skilled in the art, several modifications and improvements can be made without departing from the structure of the present invention, which will not affect the effect of the implementation of the present invention and the practicality of the patent.

Claims

1. A screen defect detection device, comprising a support platform (1), a mechanical arm (2), an image detection head (3) and an image processor (4), wherein one end of the mechanical arm (2) is connected to the support platform (1), the image detection head (3) is installed at the other end of the mechanical arm (2), and the image detection head (3) is electrically connected to the image processor (4), characterized in that: A sliding guide mechanism (5) for dissipating heat from the image detection head (3) to improve detection accuracy is provided on the mechanical arm (2) outside the image detection head (3), the sliding guide mechanism (5) comprising a heat-conducting enclosure (501) surrounding the outside of the image detection head (3), a movable sleeve (502) sleeved on the heat-conducting enclosure (501), a supporting enclosure (504) provided outside the heat-conducting enclosure (501) to form a heat dissipation cavity (503), and an auxiliary heat dissipation portion (505) provided along the outer wall of the movable sleeve (502) and slidably connected to the inner wall of the supporting enclosure (504). The supporting enclosure (504) is connected to the robot arm (2); the auxiliary heat dissipation portion (505) comprises an annular groove (5051) opened along the circumference of the movable sleeve (502), an annular airbag (5052) arranged along the annular groove (5051) and having a chamber (5053), and a plurality of through holes (5054) penetrating the annular airbag (5052) and communicating with the chamber (5053); the circumferential outer end of the annular airbag (5052) extends outside the notch of the annular groove (5051) and abuts against the inner wall of the supporting enclosure (504); During screen defect detection, the mechanical arm (2) drives the image detection head (3) to move for detection. During the movement of the mechanical arm (2), the movable sleeve (502) slides relative to the heat-conducting enclosure (501) due to inertia under the combined effect of its gravity and the swing force of the mechanical arm (2). The annular airbag (5052) abuts against the inner wall of the supporting enclosure (504) to form a frictional reciprocating damping motion, causing the annular airbag (5052) to deform and discharge the air in the internal chamber (5053) of the annular airbag (5052) through the through hole (5054), thereby accelerating the air circulation in the heat dissipation chamber (503), thereby accelerating the heat dissipation of the image detection head (3).

2. A screen defect detection device according to claim 1, characterized in that: The cross section of the annular airbag (5052) gradually narrows from the movable sleeve (502) toward the supporting enclosure (504).

3. The screen defect detection device according to claim 1, characterized in that: An arc-shaped protrusion (5055) is provided at the end of the annular airbag (5052) that contacts the supporting enclosure (504), and a friction plate (5056) is symmetrically provided on the arc-shaped protrusion (5055).

4. The screen defect detection device according to claim 1, characterized in that: The diameter of the through hole (5054) gradually increases from an end close to the chamber (5053) to an end away from the chamber (5053).

5. The screen defect detection device according to claim 1, characterized in that: The groove bottom to the groove opening of the annular groove (5051) is gradually inclined and is formed with a flared opening (5057).

6. A screen defect detection device according to any one of claims 1 to 5, characterized in that: The movable sleeve (502) is symmetrically provided with cushioning air bags (6).

7. The screen defect detection device according to claim 6, characterized in that: A plurality of spaced-apart limiting plates (7) are provided at one end of the heat-conducting enclosure (501) away from the mechanical arm (2).

8. A method for using the screen defect detection device according to claim 1, characterized in that: The steps of this method are as follows: S1, using an image detection head (3) to obtain an image of the panel to be tested, and transmitting the image of the panel to be tested to an image processor (4); S2, inputting the panel image to be inspected into the panel defect segmentation model of the image processor (4), so that the panel defect segmentation model performs convolution processing on the panel image to be inspected, and downsampling the convolution result for different times to obtain a number of downsampling results; S3, performing feature fusion on the data generated by dense connection of each downsampling result, obtaining and outputting the panel defect segmentation result; In S1, when acquiring an image of the panel to be tested, the sliding guide mechanism (5) is used to dissipate heat from the image detection head (3).

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