Adsorption mechanism, optical detection device, and display panel production device

Abstract

The application provides an adsorption mechanism, an optical detection device and a display panel production device, which comprise a base, an adsorption accessory and a conductive assembly; the inside of the base is provided with an accommodating channel; the adsorption accessory is installed on the first surface of the base, and the adsorption accessory comprises an adsorption body and a first conductive part capable of extending into the accommodating channel, and the adsorption body is used for generating adsorption effect on a product to be adsorbed; one end of the conductive assembly is arranged in the accommodating channel and connected with the first conductive part of the adsorption accessory, and the other end of the conductive assembly extends out of the accommodating channel and is grounded. In this way, the adsorption accessory is grounded through the conductive assembly, and the problem that the grounding resistance of the adsorption accessory is difficult to meet the electrostatic discharge detection standard can be solved.

Description

Technical Field

[0001] Embodiments of the present application relate to the technical field of display panel production, and in particular, to a suction mechanism, an optical detection apparatus, and a display panel production apparatus. Background Art

[0002] In the production process of precision devices such as display panels and other products, suction mechanisms are often used as carrying or fixing tools, and optical detection apparatuses are also used. The optical apparatus comprises an adaptive suction mechanism, a camera, a first light source and a second light source. A display panel to be detected can be sucked and fixed by the suction mechanism. The suction mechanism generally comprises a transparent platform and a vacuum suction cup arranged on the transparent platform. The first light source and the second light source are respectively located on the upper and lower sides of the transparent platform and supplement light towards the platform at the same time. The camera is located above the platform and is configured to photograph the product sucked by the vacuum suction cup. Whether the product is qualified can be determined by analyzing the photos taken by the camera.

[0003] Wherein, static electricity generated on the vacuum suction cup is easy to damage precision device products such as display panels, so the surface resistance and grounding resistance of the vacuum suction cup need to meet the ESD (Electro Static Discharge) detection standard.

[0004] The transparent platform is generally made of moldable polymer material with poor conductivity. For example, a transparent platform made of organic glass (Acrylic), although it can meet the requirements of optical light transmittance, the organic glass has poor conductivity. After the suction cup is installed on the transparent organic glass platform, there is a problem that the grounding resistance is unqualified, and static electricity is likely to damage the product. Summary of the Invention

[0005] In order to solve the above problems, embodiments of the present application provide a suction mechanism, an optical detection apparatus and a display panel production apparatus, so as to at least partially solve the above problems.

[0006] In a first aspect, the present application provides a suction mechanism, comprising a base, a suction member and a conductive assembly; a receiving channel is provided inside the base; the suction member is mounted on a first surface of the base, the suction member comprises a suction body and a first conductive part capable of extending into the receiving channel, and the suction body is configured to generate a suction effect on a product to be sucked; one end of the conductive assembly is arranged in the receiving channel and connected to the first conductive part of the suction member, and the other end of the conductive assembly extends out of the receiving channel and is grounded.

[0007] Optionally, the conductive assembly comprises a metal helical spring, the metal helical spring is located in the receiving channel, preferably, the outer diameter of the metal helical spring is the same as the inner diameter of the receiving channel.

[0008] Optionally, the conductive component further includes a connector and a metal lead. The connector is connected to the base and closes one end of the receiving channel. The connector includes a second conductive part, one side of which is connected to the metal helical spring and the other side is connected to the metal lead. The metal helical spring and the metal lead are electrically connected through the connector.

[0009] Optionally, one end of the receiving channel is closed and the other end is open. One end of the metal helical spring abuts against the closed end of the receiving channel, and the other end abuts against the connector, and the metal helical spring is in a compressed state.

[0010] Optionally, the axial direction of the receiving channel is parallel to the first surface of the base.

[0011] Optionally, the first conductive part has an external thread, and the first conductive part passes through the adsorption body and is threadedly connected to the base.

[0012] Optionally, the base also includes a vacuum channel, the receiving channel and the vacuum channel are intersected on the base and are connected, the adsorption element includes a vent hole, the vent hole is connected to the vacuum channel to achieve vacuum adsorption, preferably, the axial direction of the vacuum channel is parallel to the first surface of the base.

[0013] Secondly, this application provides an optical detection device, including a first light source, a second light source, a camera, and the aforementioned adsorption mechanism. The base is made of a transparent material, and the base includes a second surface opposite to the first surface. The first light source and the camera are located on one side of the first surface, and the second light source is located on one side of the second surface.

[0014] Thirdly, this application also provides a display panel manufacturing apparatus, characterized in that it includes an optical detection component and the aforementioned adsorption mechanism, wherein the adsorption mechanism is used to adsorb the display panel, and the optical detection component is used to take pictures of the display panel on the adsorption mechanism to obtain images and analyze the images.

[0015] Optionally, the optical detection assembly includes a first light source, a second light source, a camera, and an image analyzer. The base is made of a transparent material and includes a second surface opposite to the first surface. The first light source and the camera are located on one side of the first surface, and the second light source is located on one side of the second surface. The image analyzer is communicatively connected to the camera to acquire images.

[0016] Based on the adsorption mechanism provided in this application, since the conductive component passes through the receiving channel inside the base, one end is grounded and the other end is not connected to the first conductive part of the adsorption component, the static electricity generated on the conductive component can be conducted away through the conductive component, thereby making it easier for the grounding resistance of the adsorption component to meet the electrostatic discharge detection standard. Therefore, when the adsorption body adsorbs display panel products, the probability of electrostatic damage to such products by the adsorption component can be reduced. Attached Figure Description

[0017] The accompanying drawings are intended only to illustrate and explain this application and do not limit the scope of this application.

[0018] Figure 1 This is a cross-sectional schematic diagram of an adsorption mechanism provided in an exemplary embodiment of this application;

[0019] Figure 2 This is a three-dimensional schematic diagram of an adsorption mechanism provided in an exemplary embodiment of this application;

[0020] Figure 3 This is another cross-sectional schematic diagram of an adsorption mechanism provided in an exemplary embodiment of this application;

[0021] Figure 4 This is a further cross-sectional schematic diagram of an adsorption mechanism provided in an exemplary embodiment of this application;

[0022] Figure 5 This is a schematic diagram of an optical inspection device provided in an exemplary embodiment of this application.

[0023] Explanation of reference numerals in the attached figures:

[0024] 10-Base, 11-Accommodation channel, 12-Vacuum channel;

[0025] 20-Adsorption element, 21-Adsorption body, 211-Ventilation hole, 22-First conductive part;

[0026] 30 - Conductive component; 31 - Metal helical spring; 32 - Metal lead; 33 - Connector;

[0027] 40 - Trachea, 51 - First light source, 52 - Second light source, 53 - Camera. Detailed Implementation

[0028] To provide a clearer understanding of the technical features, objectives, and effects of the embodiments of this application, the specific implementation methods of the embodiments of this application will now be described with reference to the accompanying drawings.

[0029] In this document, “illustrative” means “serving as an example, illustration or description”, and any illustration or implementation described herein as “illustrative” should not be construed as a more preferred or advantageous technical solution.

[0030] To keep the drawings concise, each drawing only schematically shows the parts relevant to this application, and they do not represent the actual structure of the product. Furthermore, to make the drawings concise and easy to understand, in some drawings, components with the same structure or function are only schematically shown as one or more, or only one or more are labeled.

[0031] Firstly, reference Figures 1 to 3 This application first provides an adsorption mechanism, including a base 10, an adsorption element 20, and a conductive component 30; the base 10 has an internal receiving channel 11; the adsorption element 20 is mounted on a first surface of the base 10, and the adsorption element 20 includes an adsorption body 21 and a first conductive part 22 that can extend into the receiving channel 11; the adsorption body 21 is used to adsorb the product to be adsorbed, one end of the conductive component 30 is disposed in the receiving channel 11 and connected to the first conductive part 22 of the adsorption element 20, and the other end of the conductive component 30 extends out of the receiving channel 11 and is grounded.

[0032] Based on the above technical solution, since the conductive component 30 passes through the receiving channel 11 inside the base 10, with one end grounded and the other end connected to the first conductive pin 22 of the adsorption element 20, the static electricity on the adsorption body 21 can be conducted away through the conductive component 30. This facilitates the grounding resistance of the adsorption element 20 to meet the ESD (Electro Static Discharge) electrostatic discharge detection standard. Therefore, when the adsorption body 21 adsorbs display panel products, the probability of electrostatic damage to such products by the adsorption body 21 can be reduced. Especially for adsorption mechanisms with poor conductivity of the base 10, such as when the base 10 is made of transparent plexiglass, it is difficult to conduct the static electricity generated on the conductive component 30 away due to the poor conductivity of plexiglass. Therefore, by setting the conductive component 30, this shortcoming of plexiglass can be compensated for, and the static electricity on the adsorption body 21 can be quickly conducted away using the conductive component 30.

[0033] Secondly, refer to Figure 5 This application also provides an optical detection device, including a first light source 51, a second light source 52, a camera 53 and the above-mentioned adsorption mechanism. The base 10 is made of transparent material and includes a second surface opposite to the first surface. The first light source 51 and the camera 53 are located on the side where the first surface is located, and the second light source 52 is located on the side where the second surface is located.

[0034] This technical solution allows the optical inspection equipment to assist in the production process of display panel products and enable timely detection of product quality. For example, the adsorption mechanism can adsorb the display panel, and the first light source 51 and the second light source 52 can simultaneously provide supplementary lighting for the base 10, allowing the camera 53 to clearly photograph the display panel during production. As is known, display panels are composed of multiple functional layers stacked together. During production, a mask is also needed to obtain certain functional layers. The relative positions of the functional layers and the correct placement of the mask directly affect the production quality of the display panel. Therefore, the photographs taken by the camera 55 can be used to assist in locating the relative positions of the functional layers and the mask, and to determine whether the relative positions of the functional layers are correct after a production process is completed. If the analysis of the photographs determines that the relative positions or the placement of the mask are incorrect, the current production quality of the display panel can be corrected or determined to be substandard. A conductive component 30 is installed in the receiving channel 11 of the transparent base 10. The conductive component 30 has little impact on the light transmittance of the base 10, which can ensure the shooting effect of the camera 53. At the same time, it can quickly guide the static electricity on the adsorption body 21 away, so as to avoid the static electricity on the adsorption body 21 from damaging the display panel.

[0035] Among them, reference Figure 1 and Figure 4 The conductive component 30 includes a metal helical spring 31, which is located in the receiving channel 11. Thus, the metal helical spring 31 not only achieves the function of conducting electricity, but also has good light transmittance when the base 10 is made of transparent material, so it has little impact on the light transmittance of the base 10.

[0036] The outer diameter of the metal helical spring 31 can be the same as the inner diameter of the receiving channel 11. This prevents the metal helical spring 31 from moving around freely in the receiving channel 11, thereby ensuring reliable contact or connection between the metal helical spring 31 and the first conductive part 22 of the adsorption member 20.

[0037] In one possible embodiment, reference Figures 1 to 3The conductive component 30 also includes a connector 33 and a metal lead 32. The connector 33 is connected to the base 10 and seals one end of the receiving channel 11. The connector 33 includes a second conductive part, one side of which is connected to the metal helical spring 31, and the other side is connected to the metal lead 32. The metal helical spring 31 and the metal lead 32 are electrically connected through the connector 33. This technical solution can both enclose the metal helical spring 31 in the receiving channel 11, so that the metal helical spring 31 and the first conductive part 22 of the adsorption member 20 can reliably make conductive contact; and can also seal the receiving channel 11 to prevent contaminants from entering the receiving channel 11 and affecting the light transmittance of the base 10. This ensures the airtightness of the receiving channel 11, so that even if the adsorption member 20 adsorbs products through vacuum, it will not be adversely affected.

[0038] In addition, the connector 33 itself can be a metal part, so that the inner side of the connector 33 can be electrically connected to the metal helical spring 31, and the outer side can be electrically connected to the metal lead 32.

[0039] In one example, reference Figure 1 The receiving channel 11 is closed at one end and open at the other end; one end of the metal helical spring 31 abuts against the closed end of the receiving channel 11, and the other end abuts against the connector 33, and the metal helical spring 31 is in a compressed state. In this way, the metal helical spring 31 can be stably placed in the receiving channel 11 and reliably make conductive contact with the first conductive part 22 of the adsorption member 20 and the connector 33.

[0040] In one example, the receiving channel 11 has internal threads on its bore wall, and the connector 33 has external threads for threaded connection with the receiving channel 11. This not only facilitates connection but also makes it easy to seal the receiving channel 11. Of course, a sealing element can also be provided between the receiving channel 11 and the connector 33 to achieve a vacuum seal effect for the receiving channel 11.

[0041] In one possible embodiment, the axial direction of the receiving channel 11 may be parallel to the first surface of the base 10. The base 10 may include opposing first and second surfaces, and a side surface located between the first and second surfaces. The opening of the receiving channel 11 may be located on the side surface, thus connecting the connector 33 to the side surface of the base 10.

[0042] In one possible embodiment, reference Figure 1 and Figure 4 The first conductive part 22 has external threads and passes through the adsorption body 21 to be threadedly connected to the base 10. For example, the first conductive part 22 can be a screw or bolt. After the first conductive part 22 extends into the receiving channel 11, it can abut against the metal helical spring 31.

[0043] In one possible embodiment, reference Figure 3 The base 10 also includes a vacuum channel 12. The receiving channel 11 and the vacuum channel 12 are interleaved on the base 10 and are connected. The adsorption body 21 includes a vent 211, which is connected to the vacuum channel 12 to achieve vacuum adsorption. Based on this technical solution, the receiving channel 11 can be sealed using the connector 33. This not only seals the metal helical spring 31 within the receiving channel 11 but also ensures the airtightness of the receiving channel 11, facilitating vacuum adsorption by the adsorption body 21. The adsorption body 21 can be a vacuum suction cup. Furthermore, for the existing base 10 which only has a vacuum channel 12, the base 10 can be modified by adding a receiving channel 11 and a metal helical spring 31 to ensure the grounding resistance of the adsorption element 20 meets the requirements, reducing modification costs.

[0044] Further reference Figure 2 and Figure 3 The adsorption mechanism may also include an air pump and an air pipe 40. The air pump is connected to the vacuum channel 12 through the air pipe 40. The air pump can make the vacuum channel 12 and the air holes of the vacuum suction cup reach or approach a vacuum state so that the vacuum suction cup can adsorb the product.

[0045] The axial direction of the vacuum channel 12 can be parallel to the first surface of the base 10. This fully utilizes the space of the base 10 in the direction extending from the first surface, reducing the thickness of the base 10 between the first and second surfaces.

[0046] In one example, the axis of the vacuum channel 12 may be perpendicular to the axis of the receiving channel 11.

[0047] In actual production, multiple adsorption elements 20 can be installed on a single base 10 to facilitate stable and reliable adsorption of the display panel. Taking the adsorption body 21 as a vacuum suction cup as an example, multiple parallel and spaced vacuum channels 12 can be installed inside the base 10. Each vacuum channel 12 has an open end and a closed end. The opening of the vacuum channel 12 is sealed to the gas pipe 40. Multiple mounting holes are provided on the first surface of the base 10. The mounting holes are located on the vacuum channels 12 and are connected to the vacuum channels. One adsorption element 20 is installed in each mounting hole. In this way, the gas pump can communicate with each adsorption element 20 through the vacuum channels 12.

[0048] Correspondingly, the base 10 can also be provided with multiple receiving channels 11. The multiple receiving channels 11 are parallel and spaced apart. The extending direction of the receiving channels 11 can be perpendicular to the extending direction of the vacuum channel 12, and the extending directions of both are parallel to the first surface. By making the receiving channels 11 and the vacuum channel 12 cross-connected at the mounting hole, the receiving channels 11, the vacuum channel 12 and the vent holes 211 on the adsorption body 21 can be interconnected.

[0049] Furthermore, the mounting holes of multiple vacuum channels 12 can be aligned in the extending direction of the receiving channel 11. In this way, one receiving channel 11 can cross-connect with each vacuum channel 12, and the point of cross-connection is precisely where the mounting hole is located. See reference [for details]. Figure 1 and Figure 3 Indication.

[0050] Thirdly, in the field of display panel manufacturing, this application can also provide a display panel manufacturing equipment, including an optical inspection component and the aforementioned adsorption mechanism. The adsorption mechanism is used to adsorb display panels, and the optical inspection component is used to take pictures of the display panels on the adsorption mechanism to obtain images and analyze the images.

[0051] Specifically, the optical inspection assembly includes a first light source, a second light source, a camera, and an image analyzer. The base 10 is made of transparent material and includes a second surface opposite to the first surface. The first light source 51 and the camera 53 are located on the side of the first surface, and the second light source 52 is located on the side of the second surface. The image analyzer is communicatively connected to the camera 53 to acquire images. Thus, after each process is completed, the camera 53 can take a picture of the display panel, and then the image analyzer obtains the image taken by the camera 53 and analyzes the image to determine whether the production quality of that process is qualified.

[0052] It should be noted that, unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of this application.

[0053] It should be understood that although specific embodiments of this application have been described in detail with reference to the accompanying drawings, this should not be construed as limiting the scope of protection of this application. Various modifications and variations that can be made by those skilled in the art without inventive effort within the scope described in the claims still fall within the scope of protection of this application. Although this specification describes various embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

[0054] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.

Claims

1. An adsorption mechanism characterized by, include: A base, the interior of which is provided with a receiving channel; An adsorption element is mounted on a first surface of the base. The adsorption element includes an adsorption body and a first conductive part that can extend into the receiving channel. The adsorption body is used to adsorb the product to be adsorbed. A conductive component, one end of which is disposed in the receiving channel and connected to the first conductive part of the adsorption member, and the other end of which extends out of the receiving channel and is grounded; the conductive component includes a metal helical spring located in the receiving channel; the outer diameter of the metal helical spring is the same as the inner diameter of the receiving channel; The conductive component further includes a connector and a metal lead. The connector is connected to the base and closes one end of the receiving channel. The connector includes a second conductive part, one side of which is connected to the metal helical spring and the other side is connected to the metal lead. The metal helical spring and the metal lead are electrically connected through the connector. One end of the receiving channel is closed, and the other end is open; one end of the metal helical spring abuts against the closed end of the receiving channel, and the other end abuts against the connector, and the metal helical spring is in a compressed state.

2. The suction mechanism according to claim 1, wherein The axial direction of the receiving channel is parallel to the first surface of the base.

3. The suction mechanism according to claim 1, wherein The first conductive part has an external thread, and after passing through the adsorption body, the first conductive part is threadedly connected to the base.

4. The adsorption mechanism according to any one of claims 1-3, characterized in that, The base also includes a vacuum channel, and the receiving channel and the vacuum channel are intersected on the base and are connected. The adsorption body includes a vent hole, which is connected to the vacuum channel to achieve vacuum adsorption.

5. The adsorption mechanism according to claim 4, characterized in that, The axial direction of the vacuum channel is parallel to the first surface of the base.

6. An optical inspection device, characterized in that, The device includes a first light source, a second light source, a camera, and an adsorption mechanism as described in any one of claims 1-5. The base is made of a transparent material and includes a second surface opposite to the first surface. The first light source and the camera are located on the side of the first surface, and the second light source is located on the side of the second surface.

7. A display panel manufacturing equipment, characterized in that, The device includes an optical detection component and an adsorption mechanism as described in any one of claims 1-5, wherein the adsorption mechanism is used to adsorb a display panel, and the optical detection component is used to take pictures of the display panel on the adsorption mechanism to obtain images and analyze the images.

8. The display panel production equipment according to claim 7, characterized in that, The optical detection assembly includes a first light source, a second light source, a camera, and an image analyzer. The base is made of a transparent material and includes a second surface opposite to the first surface. The first light source and the camera are located on one side of the first surface, and the second light source is located on one side of the second surface. The image analyzer is communicatively connected to the camera to acquire images.

Images