CN212341030U

CN212341030U - Display panel detection device

Info

Publication number: CN212341030U
Application number: CN202021246136.8U
Authority: CN
Inventors: 程久阳; 唐浩; 周全国; 蒋国; 王利; 皮凯; 黄忠; 兰荣华; 王志东; 周丽佳; 徐丽蓉; 张青; 周铄
Original assignee: BOE Technology Group Co Ltd
Current assignee: BOE Technology Group Co Ltd
Priority date: 2020-06-30
Filing date: 2020-06-30
Publication date: 2021-01-12
Anticipated expiration: 2030-06-30

Abstract

The disclosure relates to a display panel detection device, and belongs to the field of display screens. The display panel detection device comprises a transmission mechanism, an area array camera set and a linear array camera set. The transmission mechanism is provided with a bearing surface for bearing the display panel, and the display panel is provided with a plane part and a curved surface part connected with the edge of the plane part. The area array camera set is used for shooting the plane part of the display panel, and the area array camera set and the transmission mechanism are arranged at intervals; the linear array camera set is used for shooting the curved surface part of the display panel, and the linear array camera set and the transmission mechanism are arranged at intervals. And determining whether the display panel has defects or not through the front image and the side image. The display panel detection device can detect the defects of the curved surface display panel, and improves the accuracy of detection results.

Description

Display panel detection device

Technical Field

The disclosure relates to the field of display, in particular to a display panel detection device.

Background

The display panel is a major component of the display device, and the quality of the display panel determines the quality of the display device.

In the production process of the display panel, defects such as cracks, bubbles or stains are easily generated in the display panel, and the display panel needs to be detected after the display panel is manufactured. The accuracy of detection of the display panel in the related art is low.

SUMMERY OF THE UTILITY MODEL

The embodiment of the disclosure provides a display panel detection device, which can improve the accuracy of a detection result.

The technical scheme is as follows:

the present disclosure provides a display panel detection apparatus, the display panel detection apparatus includes:

the transmission mechanism is provided with a bearing surface for bearing a display panel, and the display panel is provided with a plane part and a curved surface part connected with the edge of the plane part;

the area array camera set is used for shooting the plane part and is arranged at intervals with the transmission mechanism;

and the linear array camera set is used for shooting the curved surface part and is arranged at intervals with the transmission mechanism.

In one implementation of the disclosed embodiment, the transmission mechanism includes: the conveying device comprises a first conveying track and a second conveying track, wherein the extending direction of the first conveying track is vertical to the extending direction of the second conveying track;

the linear array camera set includes:

the first linear array camera set is positioned on one side of the first transmission track;

and the second linear array camera set is positioned on one side of the second transmission track.

In an implementation manner of the embodiment of the present disclosure, the linear array camera sets include two first linear array camera sets and two second linear array camera sets;

the two first linear array camera sets are respectively positioned at two opposite sides of the first transmission track;

the two second linear array camera sets are respectively positioned on two opposite sides of the second transmission track.

In an implementation manner of the embodiment of the present disclosure, the linear array camera set includes:

the linear cameras are arranged on the same side edge of the first transmission track or the second transmission track, and the angles of the lenses of the linear cameras towards the first transmission track or the second transmission track are different.

In one implementation manner of the embodiment of the present disclosure, the first transmission track or the second transmission track has a transparent transmission section, and the bearing surface is located in the transparent transmission section;

the display panel detection device comprises two area array camera sets which are oppositely arranged, and the moving path of the bearing surface passes through the space between the two area array camera sets.

In an implementation manner of the embodiment of the present disclosure, the display panel detection apparatus further includes:

and the first mechanical arm structure is positioned between the first transmission rail and the second transmission rail and is provided with a grabbing end for grabbing the display panel.

and the alignment camera is used for shooting the display panel and is arranged at intervals with the transmission mechanism.

In an implementation manner of the embodiment of the present disclosure, the alignment camera, the area-array camera set, and the line-array camera set are sequentially arranged along a moving direction of the bearing surface.

and a position adjusting mechanism having an adjusting portion for adjusting the position of the display panel, the position adjusting mechanism being electrically connected to the alignment camera.

the light source and the linear array camera set are arranged at intervals, and the illumination area of the light source is at least partially overlapped with the shooting area of the linear array camera set.

The technical scheme provided by the embodiment of the disclosure has the following beneficial effects:

in the embodiment of the disclosure, during detection, the display panel is located on the bearing surface of the transmission mechanism, the transmission mechanism moves to drive the display panel to move, when the display panel moves to the area array camera set, the area array camera set photographs the plane portion of the display panel to obtain a front image of the display panel, and when the display panel moves to the line array camera set, the line array camera set photographs the curved surface portion of the display panel to obtain a side image of the display panel. Whether the display panel has defects can be determined through the front image and the side image. The display panel detection device can detect the defects of the curved surface display panel, and improves the accuracy of detection results.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present disclosure, the drawings needed to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are only some embodiments of the present disclosure, and it is obvious for those skilled in the art to obtain other drawings based on the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of a display panel detection apparatus according to an embodiment of the present disclosure;

fig. 2 is a partial schematic view of a display panel detection apparatus provided in an embodiment of the present disclosure;

fig. 3 is a schematic position diagram of a linear array camera and a display panel according to an embodiment of the disclosure;

FIG. 4 is a partial schematic view of FIG. 3;

fig. 5 is a schematic position diagram of a linear array camera and a display panel provided in an embodiment of the disclosure;

FIG. 6 is a partial schematic view of FIG. 5;

fig. 7 is a schematic position diagram of an area-array camera and a display panel according to an embodiment of the disclosure;

fig. 8 is a flowchart of a display panel detection method according to an embodiment of the present disclosure.

Detailed Description

To make the objects, technical solutions and advantages of the present disclosure more apparent, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings.

In the related art, a camera is used for shooting the front of a display panel to obtain an image of the front of the display panel; it is determined whether the display panel has the above-described defects based on the photographed image. If the display panel is a curved display panel, the side of the display panel is generally a curved area, and when the front of the display panel is photographed by a camera, an image of the curved area cannot be accurately obtained, and then whether the curved area has defects or not cannot be confirmed, so that the detection result is not accurate enough.

Fig. 1 is a schematic structural diagram of a display panel detection apparatus according to an embodiment of the present disclosure. Referring to fig. 1, the display panel inspection apparatus includes a transmission mechanism 10, an area array camera group 20, and a line array camera group 30. The transmission mechanism 10 has a carrying surface a for carrying the display panel 1, and the transmission mechanism 10 drives the carrying surface a to move.

Fig. 2 is a partial schematic view of a display panel detection apparatus according to an embodiment of the disclosure. Referring to fig. 2, the display panel 1 has a planar portion B and a curved portion C connected to an edge of the planar portion B.

The area array camera set 20 is used for shooting a plane part B of the display panel, and the area array camera set 20 and the transmission mechanism 10 are arranged at intervals; when the bearing surface a moves to a position opposite to the area array camera set 20 (for example, directly below or directly above the area array camera set 20), the lens of the area array camera set 20 faces the bearing surface a, that is, the lens of the area array camera set 20 faces the planar portion B of the display panel on the bearing surface a.

The linear array camera set 30 is used for shooting the curved surface part of the display panel, and the linear array camera set 30 and the transmission mechanism 10 are arranged at intervals. When the carrying surface a is moved to a position opposite to the line camera set 30 (e.g., directly in front of the line camera set 30), the lens of the line camera set 30 faces the curved surface portion C of the display panel.

The area array camera set 20 and the transmission mechanism 10 are arranged at intervals, and a certain distance is reserved between the area array camera set 20 and the transmission mechanism 10, and a certain distance is reserved between the linear array camera set 30 and the transmission mechanism 10, so that the area array camera set 20 and the linear array camera set 30 can take pictures conveniently.

In the embodiment of the present disclosure, during detection, the display panel 1 is located on the bearing surface a of the transmission mechanism 10, the transmission mechanism 10 moves to drive the display panel 1 to move, when the display panel 1 moves to the area array camera set 20, the area array camera set 20 photographs the plane portion B of the display panel 1 to obtain a front image of the display panel 1, and when the display panel 1 moves to the linear array camera set 30, the linear array camera set 30 photographs the curved surface portion C of the display panel 1 to obtain a side image of the display panel 1. Whether the display panel 1 has defects can be determined by the front image and the side image. The display panel detection device provided by the disclosure can detect the defect of the curved surface display panel 1, and improves the accuracy of the detection result.

In the disclosed embodiments, defects generated in the display panel generally include cracks, bubbles, and stains. Before detection, defects in different display panels are detected through experiments, and characteristics of each defect are extracted and stored in a computer. For example, a crack may appear as a white line in a captured image, an air bubble may appear as a white circle in the captured image, and dirt is generally a black dot in the captured image. When detecting the defects of the display panel, whether the defects exist in the display panel and what kind of defects exist are judged by determining whether the characteristics appear in the image of the display panel.

In the embodiment of the present disclosure, the transmission mechanism 10 includes a rail 11 and a bearing platform 12, the bearing platform 12 is located on the rail 11, the bearing surface a is a horizontal surface of the bearing platform 12 for bearing the display panel 1, and the display panel 1 is located on the bearing surface a.

In one implementation, the rail 11 does not move, and the motor can drive the bearing platform 12 to move on the rail 11, so as to drive the display panel 1 on the bearing surface a to move.

In another implementation, the track 11 can be a moving belt, such as a conveyor belt, and the motor drives the movement of the belt, so as to move the carrying platform 12. In this implementation, the bearing platform 12 may be integrally manufactured with the rail 11, or the bearing platform 12 is connected to the rail 11 through a connecting member, so as to fix the bearing platform 12 and the rail 11.

In the embodiment of the present disclosure, the area array camera group 20 refers to a camera having a large-scale sensor arranged in an array, and is generally used to capture an image of an object whose length and width do not greatly differ in a stationary state, and the length and width of the front surface of the display panel 1 do not greatly differ, and the front surface image of the display panel 1 may be captured using the area array camera. A line camera may also be referred to as a line scan camera. The line camera set 30 is a camera with only a small number of sensors, and is generally used for shooting images of objects with long length and small width in the moving process of the objects, the side face of the display panel 1 is generally long-strip-shaped, that is, the side face of the display panel is long in length and small in width, the image shooting of the side face of the display panel 1 by using the line camera set 30 is more convenient, and excessive unnecessary pictures cannot appear in the obtained images.

Meanwhile, since the side surface of the display panel 1 is bent to form a curved surface, the curved surface area is prone to generate defects such as cracks during the bending process of the display panel. The linear array camera set 30 has higher resolution than the area array camera set 20, and a side image obtained by shooting through the linear array camera set 30 is clearer, so that the detection accuracy is improved.

The display panel may be, for example, an Organic Light-Emitting Diode (OLED) display panel.

Referring again to fig. 1, the display panel further includes an alignment camera 50, the alignment camera 50 is used for photographing the display panel 1, the alignment camera 50 is spaced apart from the transmission mechanism 10, and when the carrying surface a moves to a position opposite to the alignment camera 50 (e.g. directly below the alignment camera 50), a lens of the alignment camera 50 faces the carrying surface a.

In the embodiment of the present disclosure, when the display panel 1 moves to the alignment camera 50, the alignment camera 50 photographs the display panel 1 to obtain an image of the display panel 1, and determines whether the display panel 1 is located at a correct position according to the photographed image. And then adjusts the position of the display panel 1.

In the embodiment of the present disclosure, the image captured by the alignment camera 50 may be manually determined whether the position is correct, and manually adjusted when the position is incorrect.

In the disclosed embodiment, the above position determination and adjustment may also be performed by a machine.

Referring again to fig. 1, the display panel further includes a position adjustment mechanism 60, and the position adjustment mechanism 60 has an adjustment portion that adjusts the position of the display panel. The position adjusting mechanism 60 is electrically connected to the alignment camera 50.

In the embodiment of the present disclosure, after the alignment camera 50 photographs the display panel 1, an image of the display panel 1 is obtained, and the image of the display panel 1 is transmitted to the position adjusting mechanism 60, an image when the display panel is in the correct position is stored in the position adjusting mechanism 60, and the position adjusting mechanism 60 places the two images in an overlapping manner to see whether the boundaries of the display panels in the two images are overlapped, so as to determine whether the display panel 1 is in the correct position. When the border of the image of the display panel 1 coincides with the stored image of the display panel, it is interpreted that the display panel is in the correct position. When the boundary of the image of the display panel 1 does not coincide with the stored image of the display panel, it is described that the display panel is not in the correct position, at this time, the direction and angle of deviation of the display panel 1 are determined by the position adjusting mechanism 60 according to the image, and then the adjusting portion controlling the position adjusting mechanism 60 reversely adjusts the position of the display panel until the display panel is in the correct position according to the direction and angle of deviation of the display panel 1.

In this implementation manner, after the position of the display panel is adjusted by the alignment camera 50 and the position adjusting mechanism 60, the error caused by the error in the placement position of the display panel can be reduced well, and the placement accuracy of the display panel is ensured, so that the accuracy of subsequent detection is improved.

In the disclosed embodiment, the position adjustment mechanism 60 may be a UVW alignment stage. The UVW counterpoint platform includes two motors (VW) of X axle direction, motor (U) and the end of snatching of Y axle direction. When the two motors of the X axis are synchronous, the grabbing end is controlled to move on the X axis, the motor of the Y axis controls the grabbing end to move on the Y axis, and the two motors of the X axis are asynchronous to realize the rotation of the grabbing end on the theta axis. Like this, through the removal and the rotation of three motor control snatchs the end, can realize snatching the counterpoint that end control display panel.

In the disclosed embodiment, the X-axis and the Y-axis are perpendicular to each other and parallel to the bearing surface A, and the theta-axis is perpendicular to the bearing surface A.

As shown in fig. 1, the alignment camera 50, the area-array camera group 20, and the line-array camera group 30 are arranged in this order along the moving direction of the carrying surface a.

In this implementation, during the detection process, the display panel 1 is photographed by the alignment camera 50, and then the position of the display panel 1 is adjusted by the position adjusting mechanism 60. After the position of the display panel 1 is adjusted, the planar portion of the display panel 1 is photographed by the area array camera set 20, and then the curved portion of the display panel 1 is photographed by the linear array camera set 30, so that the display panel is detected. That is, after the display panel 1 is at the correct position, the display panel 1 is photographed, and at this time, the display panel 1 in the front image photographed by the area array camera set 20 is at the correct position, so that the influence on the detection accuracy due to the inaccuracy of the placement position of the display panel 1 is avoided.

Meanwhile, since the linear array camera set 30 photographs the curved surface portion of the display panel 1 during the movement of the display panel 1, if the photographing direction of the linear array camera set 30 is not perpendicular to the extending direction of the curved surface portion of the display panel 1, the vertical distances from different positions of the curved surface portion of the display panel 1 to the linear array camera set 30 are different. After the display panel 1 is adjusted to the correct position by the alignment camera 50 and the position adjusting mechanism 60, the shooting direction of the linear array camera set 30 is perpendicular to the extending direction of the curved surface part of the display panel 1, and the distance between the linear array camera set 30 and each shooting point is equal when shooting, so that the side images shot by the linear array camera set 30 are more accurate, the influence on the accuracy of the side images obtained by shooting due to different shooting distances is avoided, and the detection accuracy is improved.

As shown in fig. 1, the transfer mechanism 10 includes a first transfer rail 101 and a second transfer rail 102, and an extending direction of the first transfer rail 101 and an extending direction of the second transfer rail 102 are perpendicular to each other.

The first conveying track 101 and the second conveying track 102 may each include the aforementioned track 11 and the carrying platform 12.

As shown in fig. 1, the linear camera group 30 includes a first linear camera group 301 and a second linear camera group 302. Wherein, the first linear array camera set 301 is located at one side of the first transmission track 101; the second linear array camera group 302 is located on one side of the second transfer rail 102.

In the embodiment of the present disclosure, the transfer mechanism 10 is disposed as the first transfer rail 101 and the second transfer rail 102 that are perpendicular to each other, and when the first transfer rail 101 moves, one of the sides of the display panel 1, for example, the short side (the side with the smaller length) of the display panel 1 can be photographed using the first line camera group 301; when the second transfer rail 102 moves, the second linear array camera group 302 may be used to photograph the other side of the display panel 1, for example, the long side (the side having the greater length) of the display panel 1. The short side and the long side are two adjacent sides of the display panel 1, the short side and the long side are both curved surfaces, and the extending direction of the short side and the extending direction of the long side are perpendicular to each other, so that the arrangement is realized, and in the detection process, the display panel can be photographed on the side of the display panel in the moving process as long as the direction of the display panel in the moving process is ensured to be unchanged. It is more convenient to use two line scanning camera to shoot respectively two sides, and finish shooing when the short side of display panel, is snatched second transmission track 102 back, and bearing platform 12 on the first transmission track 101 can remove to position adjustment mechanism 60 once more, carries out next display panel's detection, realizes assembly line work, improves work efficiency.

Of course, this is an adaptive embodiment of the present disclosure, and in other implementation manners, the long side surface may be photographed first, and then the short side surface may be photographed, which is not limited by the present disclosure.

In the embodiment of the present disclosure, the carrying surfaces of the first conveying rail 101 and the second conveying rail 102 are parallel or in the same plane.

Illustratively, the extending direction of the first transfer rail 101 is the same as the extending direction of the short side surface, and the extending direction of the second transfer rail 102 is the same as the extending direction of the long side surface. The length of the first transfer rail 101 is between 70 cm and 110 cm, and the moving speed of the first transfer rail 101 is between 1.5 meters per second (m/s) and 2.0 meters per second. The length of the second transfer rail 102 is between 30 cm and 60 cm, and the moving speed of the second transfer rail 102 is between 0.8 m/s and 1.2 m/s.

As shown in fig. 1, the transfer mechanism 10 further includes a third transfer rail 103 and a fourth transfer rail 104, and both ends of the third transfer rail 103 are connected to the second transfer rail 102 and the fourth transfer rail 104, respectively. The fourth transfer track 104 is connected to the track 105 of the downstream device.

After the linear array camera set 30 photographs the side surfaces of the display panel 1 on the first transfer rail 101 and the second transfer rail 102, the display panel 1 is moved to a downstream apparatus through the third transfer rail 103 and the fourth transfer rail 104.

The display panel detection device provided by the embodiment of the disclosure is positioned on a production line of the display panel, and the production line is generally linear. As shown in fig. 1, the track of the conveying mechanism 10 is shaped like a Chinese character 'ji', so that the area occupied by the display panel detection device can be reduced, and meanwhile, the display panel detection device can be well connected with other production on the original production line, and the original production line is prevented from being influenced.

As shown in fig. 1, the display panel inspection apparatus further includes a first robot structure 401. The first robot arm structure 401 is located between the first transfer rail 101 and the second transfer rail 102, and the first robot arm structure 401 has a grasping end that grasps the display panel 1.

In this implementation manner, when the display panel 1 moves on the first transfer track 101 to the end point of the first transfer track 101, the grabbing end of the first robot arm structure 401 moves the display panel 1 from the first transfer track 101 to the second transfer track 102, the display panel 1 moves on the second transfer track 102, and the second linear array camera group 302 takes a picture of the curved surface portion of the display panel 1. It is more convenient to remove display panel 1 through first arm structure 401, and guarantees that display panel 1 is being moved the in-process direction unchangeable, also when display panel 1 moves to second transmission track 102 from first transmission track 101, display panel 1's position does not change, need not to adjust display panel 1's position once more, and is more convenient.

In the present embodiment, the first robot arm structure 401 has a horizontal movement portion, an up-down lifting portion, a grasping end, and the like. The horizontal moving part and the upper and lower lifting parts are connected with the grabbing end, and the grabbing end is controlled to move through the horizontal moving part and the upper and lower lifting parts, so that the display panel is controlled to move.

In one implementation of the disclosed embodiment, a second robot structure 402 is disposed between the second transfer rail 102 and the third transfer rail 103, a third robot structure 403 is disposed between the third transfer rail 103 and the fourth transfer rail 104, and a fourth robot structure 404 is disposed between the fourth transfer rail 104 and the downstream device. The second robot structure 402 may move the display panel 1 from the second transfer rail 102 to the third transfer rail 103, the third robot structure 403 may move the display panel 1 from the third transfer rail 103 to the fourth transfer rail 104, and the fourth robot structure 404 may move the display panel 1 from the fourth transfer rail 104 to a downstream apparatus for a subsequent production operation.

In the embodiment of the present disclosure, since the area array camera set 20 and the first line array camera set 301 capture different positions of the display panel 1, they do not affect each other. When the area array camera set 20 photographs the front surface of the display panel and the curved surface portion of the display panel of the first area array camera set 301 photographs, the display panel 1 is located on the same bearing platform. That is, the position adjusting mechanism 60, the area array camera unit 20, and the first linear array camera unit 301 need not be transported by a robot arm structure, and the number of times of transportation is reduced.

Of course, this is an adaptive embodiment of the present disclosure, and in other implementations, the photographing order of the front side, the long side, and the short side of the display panel may be adjusted, which is not limited by the present disclosure.

In the embodiment of the present disclosure, the first transmission track 101, the second transmission track 102, the third transmission track 103, and the fourth transmission track 104 all have at least one bearing platform 12, and each transmission track can move in two directions, so as to drive each bearing platform 12 to move back and forth on its own transmission track, and work independently, thereby ensuring that the display panel detection apparatus can realize pipeline work.

Illustratively, the first transfer rail 101, the second transfer rail 102, the third transfer rail 103 and the fourth transfer rail 104 each have two carrying platforms 12, and can simultaneously detect two display panels.

As shown in fig. 1, the display panel detection apparatus further includes a light source 70, the light source 70 is spaced apart from the line camera set 30, and an illumination area of the light source 70 at least partially coincides with a shooting area of the line camera set 30.

Illustratively, the illumination area of the light source 70 completely coincides with the shooting area of the line camera set 30.

In this implementation, the light source 70 is disposed, and when the line array camera set 30 takes a picture, the light source 70 irradiates the display panel 1, so that the taken picture is clearer, and the accuracy of subsequent detection is improved.

As shown in fig. 2, the area array camera set 20 includes at least one area array camera 200, a light source 70 is also disposed near the area array camera 200, and an illumination area of the light source 70 at least partially coincides with a shooting area of the area array camera set 20. When the area-array camera 200 takes a picture, the light source 70 irradiates the display panel 1, so that a clearer front image can be obtained, and the accuracy of subsequent detection is improved.

Illustratively, all the area-array cameras 200 in one area-array camera group 20 configure one light source; all line cameras 300 in one line camera group 30 are provided with one light source 70. And a light source 70 is used for illumination when each camera shoots, so that the resolution of the image is ensured. In other implementations, the light source 70 may be configured separately for each area camera 200 and each line camera 300.

Fig. 3 is a schematic position diagram of a linear array camera set and a display panel according to an embodiment of the disclosure. Referring to fig. 3, the linear camera group 30 includes two first linear camera groups 301. The two first linear array camera groups 301 are respectively located on two opposite sides of the first transmission track 101.

In this implementation manner, the first linear array camera sets 301 are disposed on both sides of the first transmission track 101, and in the moving process of the first transmission track 101, the two first linear array camera sets 301 respectively shoot two opposite curved surfaces of the display panel 1 on both sides of the first transmission track 101, and simultaneously obtain side graphics of the two opposite curved surfaces of the display panel 1. And the two curved surfaces are detected, so that the detection accuracy is improved.

In the embodiment of the present disclosure, one first linear camera group 301 is disposed on each side of the first transmission rail 101. Fig. 4 is a partial schematic view of fig. 3. Referring to fig. 4, one first line camera group 301 includes two line cameras 300. In other implementations, two or more first line camera groups 301 are arranged on each side of the first transmission track 101, respectively, and one first line camera group 301 may comprise one or more line cameras 300.

Fig. 5 is a schematic position diagram of a line-array camera and a display panel according to an embodiment of the disclosure. Referring to fig. 5, the linear camera group 30 includes two second linear camera groups 302. Two second linear array camera groups 302 are respectively located on opposite sides of the second transfer rail 102.

In this implementation, the second linear array camera sets 302 are disposed on both sides of the second transmission track 102, and during the movement of the second transmission track 102, the two second linear array camera sets 302 respectively photograph the two opposite curved surface portions of the display panel 1 on both sides of the second transmission track 102, and simultaneously obtain the side graphics of the two opposite curved surface portions of the display panel 1. And the two curved surfaces are detected, so that the detection accuracy is improved.

When the four sides of the display panel are curved, two first line array camera sets 301 and two second line array camera sets 302 are arranged, the first line array camera set 301 photographs two short sides of the display panel 1 when moving on the first transmission rail 101, and the second line array camera set 302 photographs two long sides of the display panel 1 when moving on the second transmission rail 102. Two curved surface parts opposite to the display panel are photographed by using two line scanning camera sets respectively, so that images of all surfaces of the display panel with the four curved surface parts being curved surfaces can be acquired.

In the embodiment of the present disclosure, one second linear array camera group 302 is disposed on each side of the second transport track 102. Fig. 6 is a partial schematic view of fig. 5. Referring to fig. 6, one second set 302 of line cameras comprises three line cameras 300, in other implementations two or more second sets 302 of line cameras are arranged on each side of the second transmission track 102, respectively, and one second set 302 of line cameras may comprise other numbers of line cameras 300.

In one implementation of the disclosed embodiment, one line camera set 30 includes two or more line cameras 300.

When two or more line cameras 300 are arranged on the same side of the transport mechanism 10, the angle of the lenses of the two or more line cameras 300 towards the transport mechanism 10 is different. Illustratively, there are two line cameras 300 on the same side of the first transport track 101, the lenses of the two line cameras 300 having different angles towards the first transport track 101, and three line cameras 300 on the same side of the second transport track 102, the lenses of the three line cameras 300 having different angles towards the second transport track 102.

In the shooting process, the lenses of the line camera 300 all point to the curved surface part C of the display panel 1, the line camera 300 can shoot the curved surface part of the display panel 1 from a plurality of angles to obtain a plurality of side images, the defects of the display panel are detected through the side images, and the detection accuracy is ensured.

In one implementation of the embodiment of the present disclosure, the transmission mechanism 10 has a transparent transmission section, and the bearing surface a is located in the transparent transmission section.

Fig. 7 is a schematic position diagram of an area-array camera and a display panel according to an embodiment of the disclosure. Referring to fig. 7, the display panel inspection apparatus includes two area array camera sets 20 disposed opposite to each other, and the carrying surface of the transmission mechanism 10 is located between the two area array camera sets 20.

In this implementation, two sides of the display panel 1 are photographed by the two area array camera sets 20, so that analysis can be performed based on two front images, and the inspection accuracy is improved.

In the embodiment of the present disclosure, one area array camera group 20 may include one, two, or more area array cameras 200.

As shown in fig. 7, the display panel 1 has a camera hole 13 and a receiver hole 14, and when a through hole is formed in the display panel 1, cracks are likely to be generated around the through hole. The area-array camera 200 may be arranged corresponding to the camera hole 13 and the earpiece hole 14 of the display panel, and the camera hole 13 and the earpiece hole 14 are photographed respectively to check whether the camera hole 13 and the earpiece hole 14 of the display panel meet the requirements. That is, when the area array camera unit 20 photographs the front surface of the display panel 1, the area array camera 200 photographs the camera hole 13 and the receiver hole 14.

Illustratively, with the image taken by the area-array camera 200, it is possible to detect whether or not the positions of the camera hole 13 and the earpiece hole 14 deviate, on the one hand, and whether or not cracks occur around the camera hole 13 and the earpiece hole 14, on the other hand. And further determines whether the shapes and areas of the camera hole 13 and the receiver hole 14 meet the requirements.

In the embodiment of the present disclosure, one area array camera set 20 may include a plurality of area array cameras 200, and the plurality of area array cameras 200 photograph the front surface of the display panel 1 to obtain a plurality of front surface images, and obtain whether the display panel is qualified based on the plurality of front surface images.

This is disclosed carries out regional shooting to non-planar display panel through the combination of polyphaser, ensures to take the image in each region of display panel to satisfy the detection demand, the device can carry out the detection of a plurality of products simultaneously, and the takt time is short, and device space adjustment scope is big, compatible production line assembly line technology.

Fig. 8 is a flowchart of a display panel detection method according to an embodiment of the present disclosure. Referring to fig. 8, the display panel detection method includes:

step S11: controlling the transmission mechanism to move.

In the embodiment of the disclosure, the transmission mechanism includes a rail and a bearing platform, the bearing platform is located on the rail, and the display panel is located on a bearing surface of the bearing platform. The bearing platform can move along the track, so that the display panel on the bearing surface is driven to move.

Step S12: and when the display panel on the bearing surface of the transmission mechanism moves to be aligned with the area array camera set, controlling the transmission mechanism to stop moving, and controlling the area array camera set to take a picture to obtain a front image.

In the embodiment of the present disclosure, the area array camera set may include one or more area array cameras, and when the display panel moves below the area array camera set, the planar portion of the display panel is photographed by the area array cameras.

Step S13: and controlling the transmission mechanism to continuously move, and controlling the linear array camera set to shoot to obtain a side image.

In the embodiment of the present disclosure, when the display panel is moved to the corresponding position of the line camera group, the line camera group photographs the curved surface portion of the display panel.

Exemplarily, the line camera comprises a first line camera set and a second line camera set, the first line camera set is located at one side of the first transmission track; the second linear array camera set is positioned on one side of the second transmission track.

Firstly, controlling a bearing surface on a first transmission rail to move, and controlling a first linear array camera set to take a picture to obtain a side image of a first side; then controlling the first mechanical arm structure to grab the display panel to the second transmission track, wherein the direction of the display panel is unchanged in the moving process; and then controlling the bearing surface on the second transmission track to move and controlling the second linear array camera set to take a picture to obtain a side image of the second side.

Step S14: and determining whether the display panel has defects or not based on the front image and the side image.

In the embodiment of the present disclosure, whether the display panel has a defect is determined by analyzing the front image and the side image, respectively.

And after the detection is finished, the display panel is grabbed and sent to downstream equipment, and the whole process is finished.

The above description is intended to be exemplary only and not to limit the present disclosure, and any modification, equivalent replacement, or improvement made without departing from the spirit and scope of the present disclosure is to be considered as the same as the present disclosure.

Claims

1. A display panel detection apparatus, comprising:

the transmission mechanism (10) is provided with a bearing surface for bearing the display panel (1), and the display panel (1) is provided with a plane part and a curved surface part connected with the edge of the plane part;

the area array camera set (20) is used for shooting the plane part and is arranged at intervals with the transmission mechanism (10);

and the linear array camera set (30) is used for shooting the curved surface part and is arranged at intervals with the transmission mechanism (10).

2. The display panel inspection apparatus according to claim 1, wherein the transport mechanism (10) comprises: a first transfer track (101) and a second transfer track (102), wherein the extension direction of the first transfer track (101) is perpendicular to the extension direction of the second transfer track (102);

the linear array camera group (30) includes:

a first linear array camera group (301) located on one side of the first transmission track (101);

a second linear array camera group (302) located on one side of the second transport track (102).

3. The display panel inspection apparatus according to claim 2, wherein the line camera group (30) includes two of the first line camera groups (301) and two of the second line camera groups (302);

the two first linear array camera sets (301) are respectively positioned at two opposite sides of the first transmission track (101);

the two second linear array camera sets (302) are respectively positioned at two opposite sides of the second transmission track (102).

4. The display panel inspection apparatus according to claim 2, wherein the line camera group (30) comprises:

at least two line cameras (300) arranged on the same side of the first transport track (101) or the second transport track (102), the angle of the lenses of the at least two line cameras (300) towards the first transport track (101) or the second transport track (102) being different.

5. The apparatus according to claim 2, wherein the first transport rail (101) or the second transport rail (102) has a transparent transport section, and the carrying surface is located in the transparent transport section;

the display panel detection device comprises two area array camera sets (20) which are arranged oppositely, and the moving path of the bearing surface passes between the two area array camera sets (20).

6. The display panel detection apparatus according to claim 2, further comprising:

a first robot arm structure (401) located between the first transfer rail (101) and the second transfer rail (102), the first robot arm structure (401) having a grasping end that grasps the display panel (1).

7. The display panel detection apparatus according to any one of claims 1 to 6, further comprising:

and the alignment camera (50) is used for shooting the display panel (1) and is arranged at intervals with the transmission mechanism (10).

8. The display panel inspection apparatus according to claim 7, wherein the alignment camera (50), the area-array camera set (20), and the line-array camera set (30) are arranged in sequence along a moving direction of the carrying surface.

9. The display panel detection apparatus according to claim 7, further comprising:

and a position adjustment mechanism (60) having an adjustment unit for adjusting the position of the display panel (1), wherein the position adjustment mechanism (60) is electrically connected to the alignment camera (50).

10. The display panel detection apparatus according to any one of claims 1 to 6, further comprising:

the light source (70) and the linear array camera set (30) are arranged at intervals, and the illumination area of the light source (70) is at least partially overlapped with the shooting area of the linear array camera set (30).