Laser processing device for ink layer of glass cover plate and glass cover plate

Abstract

The utility model relates to a laser processing device for an ink layer of a glass cover plate and the glass cover plate, the device comprises a base assembly, a workbench assembly, a moving assembly, a laser assembly and a shooting positioning assembly, the workbench assembly is arranged on the base assembly, and the workbench assembly comprises a movable positioning platform used for bearing the glass cover plate; the laser assembly is arranged on the base assembly through the moving assembly, and the laser assembly comprises a photoetching mechanism used for etching an ink layer of the glass cover plate; the shooting positioning assembly comprises a plurality of lenses, and the lenses obtain glass cover plate position images needed by positioning of the movable positioning platform from different positions. According to the technical scheme, the problem that in the prior art, due to the fact that absolute coincidence of the positions of the ink layers is difficult to guarantee through multiple times of coating, distance fall is generated among the multiple ink layers is effectively solved.

Description

Technical Field

[0001] The present application relates to the technical field of glass cover plate processing, and in particular to a laser processing device for an ink layer of a glass cover plate and a glass cover plate. Background Art

[0002] At present, the display screens on mobile terminals such as mobile phones, tablets, and car screens are mostly made of ink printing. In some existing technologies, the method of applying ink multiple times is used to avoid the problem of poor light transmittance at the edge of the display area due to abnormalities such as uneven ink coating. However, due to multiple coatings, it is difficult to ensure the absolute match of the positions of each layer of ink, which will cause a distance difference between the multiple layers of ink. For example, the authorized patent application for a touch panel and its touch display device with application number CN201510780510.X discloses two layers of ink on the touch display panel. Referring to the attached figure, it can be seen that there is a distance difference between the two layers of ink coated and cured on the touch panel. Utility Model Content

[0003] The present application provides a laser processing device for an ink layer of a glass cover plate and a glass cover plate, so as to solve the problem in the prior art that it is difficult to ensure the absolute consistency of the ink layer positions due to multiple coatings, resulting in a distance difference between multiple ink layers.

[0004] According to the present application, a laser processing device for an ink layer of a glass cover plate is provided, comprising: a base assembly, a workbench assembly, a movable assembly, a laser assembly and a photographing and positioning assembly, wherein the workbench assembly is arranged on the base assembly, and the workbench assembly comprises a movable positioning platform for carrying the glass cover plate; the laser assembly is arranged on the base assembly through the movable assembly, and the laser assembly comprises a photolithography mechanism for etching the ink layer of the glass cover plate; the photographing and positioning assembly comprises a plurality of lenses, and the plurality of lenses obtain, from different positions, images of the glass cover plate position required for positioning the movable positioning platform.

[0005] In some embodiments, the shooting and positioning assembly also includes: a connecting part, which is arranged above the positioning platform, and the connecting part is arranged as a rectangular frame. The number of lenses is 6, and the 6 lenses are respectively arranged at the four corners of the rectangular frame and the midpoints of the two long sides.

[0006] In some embodiments, a slide groove and a plurality of sliders matched with the slide groove are arranged on the connecting portion, and the lens is arranged on the slider.

[0007] In some embodiments, the connection portion is movably disposed on the base assembly and positioned above the table assembly.

[0008] In some embodiments, the moving assembly includes: a first direction moving structure, a second direction moving structure and a third direction moving structure, and the first direction moving structure, the second direction moving structure and the third direction moving structure are slidably matched with each other.

[0009] In some embodiments, the laser assembly further includes a galvanometer structure, which is a 3D galvanometer. The 3D galvanometer is disposed at one end of the laser emission of the lithography mechanism.

[0010] In some embodiments, the workbench assembly further includes multiple sets of coating platforms and correction structures, and the multiple sets of coating platforms are detachably and rotationally arranged on the positioning platform; the positioning platform is arranged on the base assembly through the correction structure, and the positioning platform is a vacuum adsorption platform.

[0011] In some embodiments, the base assembly further includes a display and an industrial control computer, and the display, laser assembly, deviation correction structure, vacuum adsorption platform and multiple lenses are all electrically connected to the industrial control computer.

[0012] According to another aspect of the present application, a glass cover plate is provided, which is processed by the above-mentioned laser processing device for the ink layer of the glass cover plate. The glass cover plate includes a glass substrate and multiple ink layers, and the multiple ink layers are aligned and etched by a laser component to form a display window.

[0013] In some embodiments, the ink layer is provided with two layers, the first ink layer located at the bottom layer has a thickness of 3-15 μm, and the second ink layer located at the top layer has a thickness of 5-35 μm.

[0014] The technical solution of the present application sets multiple lenses through the shooting positioning component, and the multiple lenses obtain the position image of the glass cover plate required for the movable positioning platform to be positioned from different positions for visual inspection, which can more accurately detect the centering of the glass cover plate, and fine-tune and fix the glass cover plate to be processed through the movable positioning platform, and then etch and align the ink layer through the laser component. The technical solution of the present application effectively solves the problem of distance difference between multiple ink layers in the prior art due to the difficulty in ensuring absolute position matching after multiple coatings. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present application and, together with the description, serve to explain the principles of the present application.

[0016] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0017] Figure 1 A three-dimensional schematic diagram of a laser processing device for an ink layer on a glass cover plate according to the first embodiment of the present application is shown.

[0018] Figure 2 A schematic diagram of a glass cover plate of the present application is shown.

[0019] The above drawings include the following reference numerals:

[0020] 10. Base assembly; 11. Industrial control computer; 20. Workbench assembly; 21. Positioning platform; 22. Coating platform; 23. Correction structure; 30. Moving assembly; 31. First direction moving structure; 32. Second direction moving structure; 33. Third direction moving structure; 40. Laser assembly; 50. Shooting and positioning assembly; 51. Lens; 52. Connecting part; 60. Glass substrate; 70. Ink layer; 71. First ink layer; 72. Second ink layer. DETAILED DESCRIPTION

[0021] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present application can be combined with each other. The present application will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0022] It should be noted that the following detailed descriptions are illustrative and are intended to provide further explanation of the present application. Unless otherwise specified, all technical and scientific terms used herein have the same meanings as those commonly understood by those skilled in the art to which the present application belongs.

[0023] For ease of description, spatially relative terms such as "above", "above", "on the upper surface of", "above", etc. may be used herein to describe the spatial positional relationship between a device or feature and other devices or features as shown in the figure. It should be understood that spatially relative terms are intended to include different orientations of the device in use or operation in addition to the orientation described in the figure. For example, if the device in the accompanying drawings is inverted, the device described as "above other devices or structures" or "above other devices or structures" will be positioned as "below other devices or structures" or "below other devices or structures". Thus, the exemplary term "above" may include both "above" and "below". The device may also be positioned in other different ways, rotated 90 degrees or in other orientations, and the spatially relative descriptions used herein are interpreted accordingly.

[0024] It should be noted that the terms used herein are only for describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprise" and / or "include" are used in this specification, it indicates the presence of features, steps, operations, devices, components and / or combinations thereof.

[0025] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein, for example. In addition, the terms "including" and "having" and any of their variations are intended to cover non-exclusive inclusions, for example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units that are clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0026] like Figure 1 As shown, the first embodiment of the present application shows a laser processing device for the ink layer of a glass cover plate, comprising: a base assembly 10, a workbench assembly 20, a moving assembly 30, a laser assembly 40 and a shooting and positioning assembly 50, wherein the workbench assembly 20 is arranged on the base assembly 10, and the workbench assembly 20 includes a movable positioning platform 21 for carrying the glass cover plate; the laser assembly 40 is arranged on the base assembly 10 through the moving assembly 30, and the laser assembly 40 includes a photolithography mechanism for etching the ink layer of the glass cover plate; the shooting and positioning assembly 50 includes a plurality of lenses 51, and the plurality of lenses 51 obtain the glass cover plate position image required for positioning the movable positioning platform 21 from different positions.

[0027] By applying the technical solution of the first embodiment of the present application, the laser processing device for the ink layer of the glass cover provided by the present application sets a plurality of lenses 51 through the shooting positioning component 50, and the plurality of lenses 51 obtain the position images of the glass cover required for positioning of the movable positioning platform 21 from different positions to perform optical positioning, calculate the center point of the glass cover through the glass cover position information fed back by the lens 51, and thus center the glass cover, fine-tune and fix the glass cover to be processed through the movable positioning platform 21, and then etch the ink layer 70 through the laser component. The technical solution of the present application effectively solves the problem in the prior art that the distance difference between multiple ink layers is generated due to the difficulty in ensuring the absolute coincidence of the ink layer positions due to multiple coatings.

[0028] like Figure 1 As shown, in the technical solution of the first embodiment of the present application, the shooting and positioning component 50 also includes: a connecting part 52, the connecting part 52 is arranged above the positioning platform 21, the connecting part 52 is arranged as a rectangular frame, the number of lenses 51 is 6, and the 6 lenses 51 are arranged at the four corners of the rectangular frame and the midpoints of the two long sides respectively. The setting of the connecting part 52 facilitates the installation and movement of multiple lenses 51, the connecting part 52 is arranged above the positioning platform 21 so that the lenses 51 installed on the connecting part 52 are convenient for image shooting of the glass cover plate to be processed, the connecting part 52 is arranged as a rectangular frame, which can adapt to the common rectangular display screen glass cover plates on the market, and according to the different shapes of the display screen glass cover plates, the shooting angles are different, and the connecting part 52 can also be set to other shapes, such as circular, elliptical, etc. The lenses 51 are arranged as 6, and the setting of multiple lenses 51 can shoot the glass cover plates to be processed from different angles, which improves the accuracy of positioning, and can also enable multiple lenses 51 to simultaneously collect the images of the glass cover plates at their corresponding points, which shortens the collection time, improves the work efficiency, and can also adapt to the simultaneous visual positioning of multiple glass cover plates to be processed. The six lenses 51 are respectively arranged at the four corners of the rectangular frame and the midpoints of the two long sides. In this way, the detection point distribution mode of the front-to-back arrangement on the connecting part 52 is adapted to the detection requirements of the edges and curved surfaces of most display screen glass cover plates on the market. At the same time, multi-point shooting can make the positioning more accurate. According to the size and shape of the glass cover plate, the lens 51 can be set at other shooting points, and connecting rods can be added on the two corresponding sides of the rectangular frame. This not only facilitates the addition of different shooting points on the connecting part 52, but also plays the role of strengthening the ribs of the rectangular frame. The lens 51 adopts a CCD lens 51, and the CCD lens 51 is used to replace the human eye for measurement and judgment. The captured target is converted into an image signal through an image capture device and transmitted to a dedicated image processing system. According to the pixel distribution and brightness, color and other information, it is converted into a digital signal. The center point of the glass cover plate is calculated by various operations on these signals by an industrial control computer. Such a position determination method is more accurate and fast. It can be understood that the above positioning process of the present application can apply the existing multi-eye positioning algorithm. These algorithms are not the improvement of the present application, so they are not described in detail.

[0029] like Figure 1As shown, in the technical solution of the first embodiment of the present application, a slide groove and a plurality of sliders matched with the slide groove are provided on the connecting portion 52, and the lens 51 is provided on the slider. The slide groove and the slider are used in combination, and the CCD lens 51 provided on the slider can be moved by sliding the slider, so that the requirements of different shooting points of glass cover plates with multiple curved surfaces, special shapes and different shapes can be met to improve the alignment accuracy. The slide groove is set as a dovetail groove, and the connection mode of the dovetail groove provides a larger surface contact, which helps to improve the connection strength, so that the slide groove and the slider are stably matched and not easy to fall off, and the stability of the lens 51 can be further improved when moving.

[0030] like Figure 1 As shown, in the technical solution of the first embodiment of the present application, the connecting portion 52 is movably arranged on the base assembly 10 and is located above the workbench assembly 20. The base assembly 10 is provided with a slide groove and a slider matched with the slide groove, and the connecting portion 52 is arranged on the slider. By sliding the slider, the connecting portion 52 can be moved, which is not only convenient for adjusting the focal length of the CCD lens 51 to facilitate clearer image acquisition, but also for large-sized and special-shaped glass cover plates that are not convenient for full-view photography, multiple shots can be taken by adjusting the position of the lens 51 to avoid errors in the captured images.

[0031] like Figure 1 As shown, in the technical solution of the first embodiment of the present application, the moving assembly 30 includes: a first direction moving structure 31, a second direction moving structure 32 and a third direction moving structure 33, and the first direction moving structure 31, the second direction moving structure 32 and the third direction moving structure 33 slide and cooperate with each other. The first direction is Figure 1 The middle X direction, the second direction is Figure 1 The middle Y direction, the third direction is Figure 1 The arrangement of the moving assembly 30 facilitates the laser assembly 40 to etch the glass cover plate to be processed from different directions and positions. In addition, the CCD lens 51 arranged on the connecting portion 52 can move with the laser assembly 40 as a whole.

[0032] In the technical solution of the first embodiment of the present application, the laser assembly 40 further includes a galvanometer structure, which is a 3D galvanometer, and the 3D galvanometer is arranged at the laser emission end of the photolithography mechanism. The 3D galvanometer can achieve high-speed scanning and positioning as well as high-precision beam control, so that the ink layer coated on the glass cover plate can be etched more accurately. The 3D galvanometer is arranged at the laser emission end of the photolithography mechanism, which makes it more convenient for the 3D galvanometer to reflect the laser light source.

[0033] like Figure 1As shown, in the technical solution of the first embodiment of the present application, the workbench assembly 20 also includes multiple sets of coating platforms 22 and a correction structure 23. Multiple sets of coating platforms 22 are detachably and rotatably arranged on the positioning platform 21; the positioning platform 21 is arranged on the base assembly 10 through the correction structure 23, and the positioning platform 21 is a vacuum adsorption platform. The shape of the coating platform 22 is adapted to the shape of the glass cover plate to be processed. The glass cover plate is placed on the coating platform 22 for secondary ink coating, which is convenient for fixing the glass cover plate. Multiple sets of coating platforms 22 can adapt to glass cover plates of different shapes. The coating platform 22 on which the glass cover plate is placed is directly installed on the positioning platform 21. Such a setting can not only facilitate the fixation of the glass cover plate on the positioning platform 21, but also prevent the damage caused by multiple movements of the glass cover plate, thereby protecting the surface of the glass cover plate to be processed. The positioning platform 21 is arranged on the base assembly 10 through the correction structure 23. The position and placement angle of the positioning platform 21 are corrected by receiving the image signal of the CCD lens 51 through the correction structure 23, so that the position of the glass cover plate placed on the positioning platform 21 via the coating platform 22 is accurate, which is convenient for laser etching. The vacuum adsorption platform fixing method has the advantages of high precision and strong stability; the vacuum adsorption platform is connected to an external exhaust pipe, and the coating platform 22 and the glass cover plate to be processed thereon are firmly fixed by exhausting the gas in the vacuum adsorption platform. In order to prevent the etched ink residue from falling onto the vacuum adsorption platform and causing the adsorption effect to decrease, a dust suction mechanism can also be provided on the base assembly 10. The dust suction mechanism is set higher than the vacuum adsorption platform, and the ink residue is cleaned by the dust suction mechanism to ensure the fixing effect of the vacuum adsorption platform. In addition, the positioning platform 21 can also be set as a platform with fixing bolt holes, and multiple sets of coating platforms 22 are fixed to the positioning platform 21 by bolts.

[0034] In some embodiments, the base assembly 10 further includes a display and an industrial control computer 11, and the display, the laser assembly 40, the correction structure 23, the vacuum adsorption platform and the multiple lenses 51 are all electrically connected to the industrial control computer 11. The multiple lenses 51 collect image information of the glass cover plate to be processed, convert the captured target into an image signal, and transmit it to the industrial control computer 11. The industrial control computer performs various operations on these signals to calculate the center point of the glass cover plate, and converts them into digital signals and transmits them to the vacuum adsorption platform and the laser assembly 40. After receiving the signal, the vacuum adsorption platform adjusts the angle and position of the vacuum adsorption platform through the correction structure 23, and then the laser assembly 40 performs etching. The difference between the technical solution of the second embodiment and the technical solution of the first embodiment is that the connecting part 52 is arranged on the laser assembly 40 and can move with the laser assembly 40 as a whole. Such a setting makes the processing trajectory of the laser assembly 40 the same as the moving trajectory of the CCD lens 51, which is convenient for monitoring the etching effect and for shooting and positioning the same glass cover plate before the next etching.

[0035] According to another aspect of the present application, a glass cover plate is also provided. The glass cover plate is processed by the laser processing device for the ink layer of the glass cover plate described in the above embodiment. The glass cover plate includes a glass substrate 60 and a plurality of ink layers 70. The plurality of ink layers 70 are etched and aligned by a laser assembly 40 to form a display window. The ink layer 70 is etched 1 to 3 times by the laser assembly 40 to completely etch away the ink to be removed. During the laser etching, PET films are attached to both the front and back sides of the glass substrate 60. The PET film on the front side of the glass substrate 60 has a thickness of 0.1 to 1.0 mm, an adhesive force of 5 to 15 N, and a high temperature resistance of 30 to 180° C. The outer edge of the PET film exceeds the outer edge of the glass substrate by 2 to 20 mm. This arrangement prevents the front side of the glass substrate 60 from being contaminated by the ink when the ink is applied. The PET film on the back side of the glass substrate 60 has a thickness of 0.02 to 0.2 mm, an adhesive force of 3 to 10 N, and a high temperature resistance of 30 to 180° C. It is attached to the display window area. The outer edge of the PET film on the back side of the glass substrate 60 is 0.5 to 20 mm smaller than the outer edge of the first ink layer 71. This arrangement facilitates the removal of the PET film on the back side of the glass substrate 60 after the etching is completed. The multi-layer ink layer 70 is aligned and etched by the laser assembly to form a display window, thus avoiding the position difference between the first ink layer 71 and the second ink layer 72 caused by the inability to achieve absolute position matching during coating of the multi-layer ink layer 70. At the same time, through laser etching, the production of patterns with a minimum line width of 0.05mm can be met; the setting of the multi-layer ink layer 70 can effectively avoid the poor light transmission caused by abnormalities such as uneven ink coating at the edge of the display area in conventional processes.

[0036] like Figure 2 As shown, in some embodiments, the ink layer 70 is provided with two layers, the first ink layer 71 at the bottom layer has a thickness of 3-15 μm, and the second ink layer 72 at the top layer has a thickness of 5-35 μm. This arrangement makes the ink color and texture more in line with the standard and satisfies a better appearance. In addition, according to different requirements of the glass substrate 60, the ink layer 70 can also be set to 3 layers or more, and the thickness of the ink layer 70 can be adjusted according to requirements.

[0037] In summary, through the above technical solutions, the laser processing device for the ink layer of the glass cover provided by the present application, through the shooting positioning component 50, multiple lenses 51 are set, and the multiple lenses 51 obtain the glass cover position image required for the movable positioning platform 21 to position from different positions for visual inspection, and the center point of the glass cover is calculated through the glass cover position information fed back by the lens 51, so as to center the glass cover, and the glass cover to be processed is fine-tuned and fixed by the movable positioning platform 21, and then the ink layer 70 is etched by the laser component. The technical solution of the present application effectively solves the problem of distance difference between multiple ink layers in the prior art due to the difficulty in ensuring the absolute coincidence of the ink layer position due to multiple coatings.

[0038] The above are only preferred embodiments of the present application and are not intended to limit the present application. For those skilled in the art, the present application may have various modifications and variations. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A laser processing device for an ink layer of a glass cover plate, characterized in that: include: A base assembly (10); A workbench assembly (20), the workbench assembly (20) being arranged on the base assembly (10), the workbench assembly (20) comprising a movable positioning platform (21) for carrying a glass cover plate; Mobile assembly (30); a laser assembly (40), the laser assembly (40) being arranged on the base assembly (10) via the moving assembly (30), the laser assembly (40) comprising a photolithography mechanism for etching the ink layer of the glass cover plate; A photographing and positioning component (50), wherein the photographing and positioning component (50) comprises a plurality of lenses (51), and the plurality of lenses (51) acquires, from different positions, images of the glass cover plate positions required for positioning the movable positioning platform (21).

2. The laser processing device for the ink layer of the glass cover according to claim 1, characterized in that: The shooting and positioning assembly (50) further comprises: a connecting portion (52), the connecting portion (52) being arranged above the positioning platform (21), the connecting portion (52) being arranged as a rectangular frame, the number of the lenses (51) being 6, the 6 lenses (51) being arranged respectively at the four corners of the rectangular frame and at the midpoints of the two long sides.

3. The laser processing device for the ink layer of the glass cover plate according to claim 2, characterized in that: The connecting portion (52) is provided with a slide groove and a plurality of sliding blocks matched with the slide groove, and the lens (51) is arranged on the sliding blocks.

4. The laser processing device for the ink layer of the glass cover plate according to claim 2, characterized in that: The connecting portion (52) is movably arranged on the base assembly (10) and is located above the workbench assembly (20).

5. The laser processing device for the ink layer of the glass cover according to claim 1, characterized in that: The moving assembly (30) comprises: a first direction moving structure (31), a second direction moving structure (32) and a third direction moving structure (33); the first direction moving structure (31), the second direction moving structure (32) and the third direction moving structure (33) are slidably matched with each other.

6. The laser processing device for the ink layer of the glass cover according to claim 1, characterized in that: The laser assembly (40) further comprises a galvanometer structure, wherein the galvanometer structure is a 3D galvanometer, and the 3D galvanometer is arranged at the laser emission end of the photolithography mechanism.

7. The laser processing device for the ink layer of the glass cover according to claim 1, characterized in that: The workbench assembly (20) further comprises a plurality of coating platforms (22) and a deviation-correcting structure (23), wherein the plurality of coating platforms (22) are detachably and interchangeably arranged on the positioning platform (21); the positioning platform (21) is arranged on the base assembly (10) via the deviation-correcting structure (23), and the positioning platform (21) is a vacuum adsorption platform.

8. The laser processing device for the ink layer of the glass cover plate according to claim 7, characterized in that: The base assembly (10) further comprises a display and an industrial control computer (11); the display, the laser assembly (40), the deviation correction structure (23), the vacuum adsorption platform and the plurality of lenses (51) are all electrically connected to the industrial control computer (11).

9. A glass cover plate, the glass cover plate being processed by the laser processing device for the ink layer of a glass cover plate according to any one of claims 1 to 8, characterized in that: The glass cover plate comprises a glass substrate (60) and multiple ink layers (70), and the multiple ink layers (70) are etched and aligned by a laser assembly (40) to form a display window.

10. The glass cover plate according to claim 9, characterized in that: The ink layer (70) is provided with two layers, the first ink layer (71) located at the bottom layer has a thickness of 3-15 μm, and the second ink layer (72) located at the top layer has a thickness of 5-35 μm.

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