CN112174542A - Glass cover plate and preparation method thereof, display panel and display device - Google Patents

Glass cover plate and preparation method thereof, display panel and display device Download PDF

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Publication number
CN112174542A
CN112174542A CN202011045399.7A CN202011045399A CN112174542A CN 112174542 A CN112174542 A CN 112174542A CN 202011045399 A CN202011045399 A CN 202011045399A CN 112174542 A CN112174542 A CN 112174542A
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CN
China
Prior art keywords
glass substrate
substrate
ultra
support
optical film
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Granted
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CN202011045399.7A
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Chinese (zh)
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CN112174542B (en
Inventor
李征
李小和
张霄宁
张�育
秦锋
姬生超
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Xiamen Tianma Microelectronics Co Ltd
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Xiamen Tianma Microelectronics Co Ltd
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Priority to CN202011045399.7A priority Critical patent/CN112174542B/en
Publication of CN112174542A publication Critical patent/CN112174542A/en
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    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/001—General methods for coating; Devices therefor
    • C03C17/003—General methods for coating; Devices therefor for hollow ware, e.g. containers
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
    • C03B33/00—Severing cooled glass
    • C03B33/02—Cutting or splitting sheet glass or ribbons; Apparatus or machines therefor
    • C—CHEMISTRY; METALLURGY
    • C03—GLASS; MINERAL OR SLAG WOOL
    • C03C—CHEMICAL COMPOSITION OF GLASSES, GLAZES OR VITREOUS ENAMELS; SURFACE TREATMENT OF GLASS; SURFACE TREATMENT OF FIBRES OR FILAMENTS MADE FROM GLASS, MINERALS OR SLAGS; JOINING GLASS TO GLASS OR OTHER MATERIALS
    • C03C17/00—Surface treatment of glass, not in the form of fibres or filaments, by coating
    • C03C17/001—General methods for coating; Devices therefor
    • C03C17/002—General methods for coating; Devices therefor for flat glass, e.g. float glass
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0412—Digitisers structurally integrated in a display
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G06F3/0446—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means using a grid-like structure of electrodes in at least two directions, e.g. using row and column electrodes
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04103—Manufacturing, i.e. details related to manufacturing processes specially suited for touch sensitive devices
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P40/00—Technologies relating to the processing of minerals
    • Y02P40/50—Glass production, e.g. reusing waste heat during processing or shaping
    • Y02P40/57—Improving the yield, e-g- reduction of reject rates

Abstract

The embodiment of the invention discloses a glass cover plate, a preparation method thereof, a display panel and a display device. The preparation method of the glass cover plate comprises the steps of providing an ultrathin glass substrate, wherein an optical film layer is formed on one side of the ultrathin glass substrate in a roll-to-roll mode; and arranging a supporting structure on one side of the ultrathin glass substrate, which deviates from the optical film layer. According to the embodiment of the invention, the optical performance of each position of the glass cover plate can be kept consistent, so that the production yield of the glass cover plate can be improved; meanwhile, the display panel comprising the glass cover plate can have a thinner thickness, namely the display panel is beneficial to thinning.

Description

Glass cover plate and preparation method thereof, display panel and display device
Technical Field
The embodiment of the invention relates to the technical field of display, in particular to a glass cover plate, a preparation method of the glass cover plate, a display panel and a display device.
Background
Along with the continuous development of display technology, the application of display is more and more extensive, and the display comprises display module assembly and the apron that is located display module assembly's display surface one side usually, and the apron can protect display module assembly, can also optimize the outward appearance of display simultaneously.
In the prior art, most of glass cover plates are composed of glass substrates, and in order to improve the impact resistance of the glass cover plates, an explosion-proof film is usually attached to the surface of the glass substrate, namely the glass cover plates are composed of the glass substrates and the explosion-proof film; thus, when the glass cover plate is applied to a display, the thinning of the display is not facilitated, and the surface scratch property and hardness are deteriorated. Meanwhile, when the glass cover plate is applied to a curved screen, a glass substrate of the glass cover plate is usually manufactured into a curved surface, and then a corresponding functional film layer is formed on the surface of the glass substrate in a deposition mode; however, because the glass substrate is curved, the angles and distances between the deposition source and each position on the surface of each glass substrate are different, so that the thickness and properties of the functional layer deposited on the surface of the glass substrate are different, the optical performance of the functional film layer at each position of the glass cover plate is different, and the production yield of the glass cover plate is reduced.
Disclosure of Invention
In view of the above problems, embodiments of the present invention provide a glass cover plate, a manufacturing method thereof, a display panel, and a display device, so as to improve the production yield of the glass cover plate, improve the mechanical performance of the glass cover plate, and enable the display panel including the glass cover plate to have a thinner thickness.
The embodiment of the invention provides a preparation method of a glass cover plate, which comprises the following steps:
providing an ultrathin glass substrate; an optical film layer is formed on one side of the ultrathin glass substrate in a roll-to-roll mode;
and a supporting structure is arranged on one side of the ultrathin glass substrate, which deviates from the optical film layer.
Based on the same inventive concept, the embodiment of the invention also provides a glass cover plate, which is prepared by adopting the preparation method of the glass cover plate, and the glass cover plate comprises the following components:
the optical film layer is formed on the surface of one side of the ultrathin glass substrate;
and the supporting structure is positioned on one side of the ultrathin glass substrate, which is deviated from the optical film layer.
Based on the same inventive concept, the embodiment of the invention also provides a display panel, which comprises the glass cover plate.
Based on the same inventive concept, the embodiment of the invention also provides a display device, which comprises the display panel.
According to the glass cover plate and the preparation method thereof, the display panel and the display device provided by the embodiment of the invention, the optical film layer is formed on one side of the ultrathin glass substrate in a roll-to-roll mode, so that the thicknesses of the optical film layers formed on the surfaces of one side of the ultrathin glass substrate at all positions are kept consistent, the consistency of the optical performance of the glass cover plate at all positions is ensured, and the production yield of the glass cover plate can be improved; the support structure is arranged on one side of the ultrathin glass substrate, which is far away from the side where the optical film layer is formed, so that the ultrathin glass substrate is supported, and the glass cover plate has good mechanical performance; meanwhile, compared with a common glass substrate, the ultrathin glass substrate has a thinner thickness and better bending performance, so that the glass cover plate has a thinner thickness, and a display panel comprising the glass cover plate can have a thinner thickness, namely the display panel is favorably thinned.
Drawings
FIG. 1 is a schematic view of a glass cover plate according to the prior art;
FIG. 2 is a schematic diagram of a prior art glass cover plate;
FIG. 3 is a flow chart of a method for manufacturing a glass cover plate according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a process flow for manufacturing a glass cover plate corresponding to FIG. 3;
FIG. 5 is a schematic top view of a glass cover plate according to an embodiment of the present invention;
FIG. 6 is a schematic view of the film structure of a glass cover plate of section A-A in FIG. 5;
fig. 7 is a schematic structural diagram of a manufacturing process of a light-shielding layer according to an embodiment of the present invention;
FIG. 8 is a schematic structural diagram illustrating a process for manufacturing a glass cover plate according to an embodiment of the present invention;
FIG. 9 is a flow chart of a method of manufacturing an ultra-thin glass substrate according to an embodiment of the present invention;
FIG. 10 is a schematic structural diagram of a process for manufacturing an ultra-thin glass substrate according to an embodiment of the present invention;
FIG. 11 is a flow chart of a method for making a glass cover plate according to an embodiment of the present invention;
FIG. 12 is a schematic diagram of a process flow for manufacturing a glass cover plate corresponding to FIG. 11;
FIG. 13 is a flow chart of yet another method for making a glass cover plate according to an embodiment of the present invention;
FIG. 14 is a schematic diagram of a process flow corresponding to FIG. 13;
FIG. 15 is a flow chart of attaching a support substrate to an ultra-thin glass substrate according to an embodiment of the present invention;
FIGS. 16-19 are schematic structural views of a bonded support substrate and an ultra-thin glass substrate according to an embodiment of the present invention;
FIG. 20 is a schematic diagram of a film structure of an ultra-thin glass substrate according to an embodiment of the present invention;
FIG. 21 is a flow chart of a method of bonding layer placement provided by an embodiment of the present invention;
FIG. 22 is a schematic view showing a flow structure of a method for providing an adhesive layer corresponding to FIG. 21;
FIG. 23 is a flow chart of a method for detecting a bonding layer according to an embodiment of the present invention;
FIG. 24 is a schematic view of a flow chart corresponding to FIG. 23 for detecting adhesion layer;
fig. 25 is a schematic diagram of a film structure of a display panel according to an embodiment of the invention;
fig. 26 is a schematic structural diagram of a display device according to an embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
As described in the background art, as shown in fig. 1, when the mechanical performance of the glass cover plate 010 is improved by attaching the anti-explosion film 012 on the surface of one side of the glass substrate 011 of the glass cover plate 010, the total thickness T of the glass cover plate 010 is the sum of the thickness T1 of the glass substrate 011 and the thickness T2 of the anti-explosion film layer 012, so that the glass cover plate 010 has a relatively thick thickness, and when the glass cover plate is applied to a display panel, the total thickness of the display panel is the sum of the thickness of the display module 020 and the thickness of the glass cover plate, so that the display panel using the glass cover plate 010 with the relatively thick thickness has the relatively thick thickness, which is not beneficial to the thinning of the display panel.
In addition, as shown in fig. 2, when the glass cover plate 010 is applied to a curved display panel, the glass substrate 011 of the glass cover plate 010 is usually formed into a curved shape, and then the corresponding optical function layer 013 is formed on the curved glass substrate 011 by deposition, so that the glass cover plate 010 has the corresponding optical performance. When the optical function layer 013 is formed on the curved glass substrate 011 by deposition, the distances and angles between the deposition source 031 and the curved glass substrate 011 are different at different positions, so that the thicknesses of the optical function layer 013 deposited by the deposition source 031 on the curved glass substrate 011 at the different positions are different, the properties of the optical function layer 013 at the different positions of the glass substrate 011 are different, the optical performance of the glass cover plate 010 at the different positions is different, and the production yield of the glass cover plate 010 is reduced.
In order to solve the above technical problems, an embodiment of the present invention provides a method for manufacturing a glass cover plate, which is used for manufacturing the glass cover plate provided by the embodiment of the present invention. Fig. 3 is a flowchart of a method for manufacturing a glass cover plate according to an embodiment of the present invention. As shown in fig. 3, the method for manufacturing a glass cover plate includes:
s110, providing an ultrathin glass substrate; an optical film layer is formed on one side of the ultrathin glass substrate in a roll-to-roll mode;
and S120, arranging a supporting structure on one side of the ultrathin glass substrate, which is far away from the optical film layer.
Fig. 4 is a schematic structural diagram of a manufacturing process of the glass cover plate corresponding to fig. 3. As shown in fig. 4, the ultra-thin glass substrate 11 is wound on a roll shaft 21 of a roll-to-roll apparatus, and the ultra-thin glass substrate 11 is controlled to move by the roll shaft 21 while applying tension to the ultra-thin glass substrate 11, so that the ultra-thin glass substrate 11 can have a flat surface; at this time, the optical film layer 12 can be deposited on the flat surface of the ultra-thin glass substrate 11, so that the distance and angle of each position of the surface of the ultra-thin glass substrate 11, which is used for depositing the optical film layer 12, relative to the deposition source can be kept consistent, the thickness of the optical film layer 12 deposited by the deposition source at each position of the surface of the ultra-thin glass substrate 11 can be kept consistent, the optical film layer 12 formed at each position of the ultra-thin glass substrate 11 can have consistent optical performance, the production yield of the glass cover plate can be improved, and the production cost can be reduced; meanwhile, because the thickness of the ultra-thin glass substrate 11 is relatively thin, the thickness T of the ultra-thin glass substrate 11 can be, for example, 0.01mm or more and T or less than 0.1mm, so that the ultra-thin glass substrate 11 has good bending and deformation characteristics, and after the optical film layer 12 is formed on the surface of the ultra-thin glass substrate 11 in a roll-to-roll manner, the ultra-thin glass substrate 11 can be randomly deformed to meet the requirement of a curved glass cover plate. Illustratively, the optical film layer 12 formed on one side of the ultra-thin glass substrate 11 may include, for example, but not limited to, at least one of an anti-glare layer, an anti-reflection layer, and a fingerprint dissipation layer.
In addition, after the ultra-thin glass substrate 11 formed with the optical film layer 12 is provided, a supporting structure 13 may be disposed on a side of the ultra-thin glass substrate 11 away from the optical film layer 12, and the supporting structure 13 is used for supporting the ultra-thin glass substrate 11, so that the finally formed glass cover plate has impact resistance, and thus the mechanical performance of the glass cover plate can be improved; accordingly, since the thickness of the ultra-thin glass substrate 11 is relatively thin, even if the supporting structure 13 is additionally arranged on the side of the ultra-thin glass substrate 11 away from the optical film layer 12, the glass cover plate can have a relatively thin thickness, thereby facilitating the thinning of the display panel comprising the glass cover plate.
Meanwhile, the support structure 13 disposed on the side of the ultra-thin glass substrate 11 facing away from the optical film layer 12 may include, but is not limited to, an optical functional layer and/or a touch functional layer, for example. When the supporting structure 13 includes an optical function layer, the optical function layer may be an existing film layer in the current display panel, and the optical function layer may include, but is not limited to, at least one of an explosion-proof layer, a rainbow-pattern-proof film layer, a phase retarder, and a polarizer, for example, and thus, the existing optical function layer in the display panel is disposed in the glass cover plate, so that the optical function layer is reused as the supporting structure 13 capable of supporting the ultra-thin glass substrate 11, thereby being capable of improving the mechanical performance of the glass cover plate and facilitating further reducing the overall thickness of the display panel including the glass cover plate. Similarly, when the support structure 13 includes a touch function layer, the touch function layer may be a film layer existing in the display panel having a touch function currently; the touch function layer may include a touch electrode for identifying a touch position and/or a touch pressure, for example, but not limited to, one of a metal mesh electrode, a nano silver electrode, and a transparent electrode; in this way, the touch function layer in the display panel with the touch function is reused as the supporting structure 13 for supporting the ultra-thin glass substrate 11, so that the mechanical performance of the glass cover plate is improved, and the overall thickness of the display panel comprising the glass cover plate is further reduced.
Fig. 5 is a schematic top view of a glass cover plate according to an embodiment of the present invention, and fig. 6 is a schematic film structure of the glass cover plate shown in a cross section a-a in fig. 5. As shown in fig. 5 and 6 in conjunction, when the support structure includes the touch function layer 1031, the touch function layer 1031 includes a sensor arrangement region 1031 and a signal line arrangement region 1302 surrounding the sensor arrangement region 1301; the sensor arrangement area 1031 includes a touch sensor 131, and the touch sensor 131 is composed of, for example, a grid-like touch electrode; and the signal line setting region 131 includes a touch signal transmission line 132, the touch signal transmission line 132 being capable of transmitting a corresponding touch signal; at this time, a corresponding light shielding structure 14 needs to be disposed on a surface of the ultra-thin glass substrate 11 away from the optical film layer 12, and an orthographic projection of the light shielding structure 14 on the touch functional layer 1031 covers the signal line disposing region 1302 of the touch functional layer 1031, so as to prevent the display effect from being affected by necessary light leakage. By way of example, the light blocking structure 14 may include, but is not limited to, ink; at this time, the light shielding structure 14 may be disposed on a surface of the ultra-thin glass substrate 11 away from the optical film layer 12 by inkjet printing or coating; alternatively, the light shielding structure 14 can be made in a roll-to-roll process.
Fig. 7 is a schematic structural diagram of a manufacturing process of a light shielding layer according to an embodiment of the present invention. As shown in fig. 7, since the ultra-thin glass substrate is obtained by cutting the ultra-thin glass roll 10, the optical film layer and the light shielding structure may be formed on the ultra-thin glass roll 10, and then the ultra-thin glass roll 10 is cut to obtain the corresponding ultra-thin glass substrate. When the light shielding structure 14 is an ink, the ink may be a photolithographic ink, and the process of preparing the supporting structure 14 in a roll-to-roll manner includes applying glue 121, pre-baking 122, exposing 123, developing 124, and post-baking 152; namely, the ultrathin glass coiled material 10 positioned between two movable roll shafts 22 is in an unfolded state by winding the ultrathin glass coiled material 10 on the roll shafts (21, 22) of a roll-to-roll device in a mode that one movable roll shaft 22 is used for unreeling and the other movable roll shaft 22 is used for reeling; thus, after the moving roll shaft 22 is unwound, gluing 121 is performed on one side of the ultrathin glass coiled material 10, namely the gluing 121 process comprises spraying photoetching ink to one side of the ultrathin glass coiled material 10 by using an ink sprayer 201; after the gluing 121 is finished, the sprayed photoetching ink is subjected to pre-baking 122 so that the ink is in a solidified state; after the pre-baking 122 is finished, exposing 123 and developing 124 the ink in sequence by using a light source 203 and a screen 202 to remove redundant ink and only keeping the ink corresponding to a signal line setting area in the touch function layer; finally, the exposed 123 and developed 124 ink is post-baked, and after being baked, the ink is wound by the moving roller 22 for subsequent use.
In addition, when the ink is not photoetching ink, the screen printing plate can be directly used for masking during ink spraying so as to expose the position where the light shielding structure is required to be arranged and shield the position where the ink is not required to be arranged; therefore, the processes of exposure and development are not required to be executed, and the process is facilitated to be simplified.
Optionally, with reference to fig. 4, the support structure 13 may be disposed on a side of the ultra-thin glass substrate 11 away from the optical film layer 12, where the ultra-thin glass substrate 11 is directly used as a substrate, and the support structure 13 is directly formed on a side of the ultra-thin glass substrate 11 away from the optical film layer 13, so as to facilitate simplification of process steps and simplification of a structure of the glass cover plate, and further facilitate further reduction of the overall thickness of the display panel including the glass cover plate. The process of directly forming the support structure 13 on the side of the ultra-thin glass substrate 11 facing away from the optical film layer 12 may include, but is not limited to, sputtering, deposition, etching, or the like.
Illustratively, when the support structure 13 includes a touch functional layer, the touch functional layer may include, for example, a touch electrode. The touch electrode may directly use the ultra-thin glass substrate 11 as a base, and is formed on a surface of the ultra-thin glass substrate 11, which is away from the optical film layer 12. The specific forming method is as follows: depositing a metal layer on one side of the ultrathin glass substrate 11, which is far away from the optical film layer 12, and etching the deposited metal layer to form a touch electrode; the touch electrode forming method can also be performed in a roll-to-roll apparatus, that is, a metal layer is deposited on a side of the ultrathin glass substrate 11 wound on a reel of the roll-to-roll apparatus, which is away from the optical film layer 12, and the metal layer is exposed, developed, etched, and the like, so as to remove the metal layer at the position of the non-touch electrode, and the structure remained in the metal layer is the structure of the touch electrode.
It should be noted that, when the light shielding structure, the supporting structure, and the optical film layer are all formed on the ultra-thin glass substrate in a roll-to-roll manner, the specific forming sequence of the light shielding structure, the supporting structure, and the optical film layer is not specifically limited in the embodiments of the present invention on the premise that the functions of each film layer structure can be realized. Meanwhile, when the support structure includes the touch function layer, a forming process of the touch electrode of the touch function layer is similar to that of the light shielding structure shown in fig. 7, and is not described herein again.
In addition, the mode that the supporting structure is arranged on one side, deviating from the optical film layer, of the ultrathin glass substrate can also be that the supporting structure is prepared firstly, and then the prepared supporting structure is attached to one side, deviating from the optical film layer, of the ultrathin glass substrate.
Specifically, fig. 8 is a schematic structural diagram of a manufacturing process of a glass cover plate according to an embodiment of the present invention. As shown in fig. 8, after the optical film layer 12 is formed on one side of the ultra-thin glass substrate 11 in a roll-to-roll manner, the prepared support structure 13 and the ultra-thin glass substrate on which the optical film layer 12 is formed can be bonded together in a roll-to-roll manner, so that the ultra-thin glass substrate 11 and the support structure 13 have good flatness of bonding. When the ultra-thin glass substrate 11 and the supporting structure 13 are bonded, a bonding layer may be sprayed or coated on a bonding surface of the ultra-thin glass substrate 11 and/or the supporting structure 13, so that the ultra-thin glass substrate 11 and the supporting structure 13 can be bonded together through the bonding layer, and the bonding layer may include but is not limited to one of thermosetting adhesive, photosensitive adhesive, acrylic adhesive, silicon adhesive and polyvinyl butyral resin adhesive; alternatively, the bonding surface side of the provided support structure 13 may be provided with an adhesive layer, before bonding, the outermost release film of the support structure 13 is peeled off to leak the adhesive layer, and then the support structure 13 is directly bonded to the side of the ultra-thin glass substrate away from the optical film layer 12. In addition to the above bonding methods, the bonding method of the support structure 13 and the ultra-thin glass substrate 11 may be other known bonding methods, which is not specifically limited in the embodiment of the present invention.
Alternatively, the ultra-thin glass substrate is a substrate meeting the size requirement of the glass cover plate, and can be obtained by cutting a corresponding ultra-thin glass coil. Fig. 9 is a flowchart of a method for manufacturing an ultra-thin glass substrate according to an embodiment of the present invention. As illustrated in fig. 9, a method of providing an ultra-thin glass substrate includes:
s111, providing an ultrathin glass coil;
s112, forming an optical film layer on the surface of one side of the ultrathin glass coiled material in a roll-to-roll mode;
and S113, cutting the ultrathin glass coiled material along a cutting line to form an ultrathin glass substrate.
For example, fig. 10 is a schematic structural diagram of a manufacturing process of an ultra-thin glass substrate according to an embodiment of the present invention. As shown in fig. 10, the ultra-thin glass web 10 is wound around a roll of a roll-to-roll apparatus, which may include, but is not limited to, two moving rolls 22 and a plurality of supporting rolls 21, wherein the two moving rolls 22 may rotate clockwise to move the ultra-thin glass web 10 wound around the rolls (21, 22), and the surface of the portion of the ultra-thin glass web 10 on which the optical film layer 12 is being deposited is controlled to be flat until the optical film layer 12 is formed at each position of the ultra-thin glass web 10. Among them, the ultra-thin glass web 10 includes a plurality of ultra-thin glass substrate disposition regions 101 and a cutting line 102 between the ultra-thin glass substrate disposition regions 101. After the optical film layer 12 is formed at each position of the ultra-thin glass roll 10, the ultra-thin glass roll 10 may be cut along the cutting line 102 of the ultra-thin glass roll 10 to form the ultra-thin glass substrate 11 including the optical film layer 12.
In this way, the optical film layer is formed on the ultra-thin glass roll in a roll-to-roll manner, so that the thickness of the optical film layer at each position of the ultra-thin glass roll can be kept consistent, and the optical performance of the ultra-thin glass substrate 11 obtained by subsequent cutting at each position can be kept consistent.
Correspondingly, because the ultra-thin glass substrate is obtained by the cutting of ultra-thin glass coiled material, and set up in the ultra-thin glass substrate and deviate from the bearing structure of optical film layer one side's the mode of setting can be: before the ultrathin glass coiled material is cut along the cutting line of the ultrathin glass coiled material, arranging a supporting structure at one side of the ultrathin glass coiled material, which is far away from the optical film layer, and after the supporting structure is arranged, cutting the ultrathin glass coiled material provided with the supporting structure; or after the ultrathin glass coiled material is cut into the ultrathin glass substrate, the supporting structure is directly formed on or attached to one side of the ultrathin glass substrate, which is far away from the optical film layer.
In addition, a corresponding support substrate may be further disposed on a side of the support structure facing away from the ultra-thin glass substrate, and the support substrate may include, for example, but is not limited to, a display module; at this time, when the glass cover plate is attached to the light-emitting side of the display module, the display module can support the glass cover plate, and the glass cover plate can protect the display module. Alternatively, the glass cover plate itself may comprise a supporting substrate.
Optionally, fig. 11 is a flowchart of a method for manufacturing a glass cover plate according to another embodiment of the present invention. As shown in fig. 11, the method for manufacturing the glass cover plate includes:
s210, providing an ultrathin glass substrate; an optical film layer is formed on one side of the ultrathin glass substrate in a roll-to-roll mode;
s220, arranging a supporting structure on one side of the ultrathin glass substrate, which is far away from the optical film layer;
s230, providing a support substrate;
s240, arranging the support substrate on one side of the support structure, which is far away from the ultrathin glass substrate.
Exemplarily, fig. 12 is a schematic structural diagram of a manufacturing process of a glass cover plate corresponding to fig. 11. As shown in fig. 12, the surface of the support substrate 15 may be a curved surface or a flat surface; when the surface of the supporting substrate 15 is a curved surface, the supporting substrate 15 is arranged on one side of the supporting structure 13 departing from the ultrathin glass substrate 11, and the formed glass cover plate can be applied to a curved surface display panel to protect a display module of the curved surface display panel; accordingly, when the surface of the supporting substrate 15 is a plane, the glass cover plate formed by disposing the supporting substrate 15 on the side of the supporting structure 13 away from the ultra-thin glass substrate 11 can be applied to a flat display panel or a flexible display panel. The material of the support substrate 15 may include one of, but not limited to, plastic, glass, ceramic, or metal.
Fig. 11 and 12 are schematic diagrams illustrating an embodiment of the invention, and in fig. 11 and 12, a support structure 13 is first disposed on a side of the ultra-thin glass substrate 11 away from the optical film layer 12, so that a support substrate 15 can be attached to the side of the ultra-thin glass substrate 11 away from the optical film layer 12 through the support structure 13; in the embodiment of the invention, the support structure can be arranged on the surface of one side of the support substrate, and then the support substrate is attached to one side of the ultrathin glass substrate, which is far away from the optical film layer, through the support structure.
Optionally, fig. 13 is a flowchart of a method for manufacturing a glass cover plate according to another embodiment of the present invention. As shown in fig. 13, the method for manufacturing the glass cover plate includes:
s310, providing an ultrathin glass substrate; an optical film layer is formed on one side of the ultrathin glass substrate in a roll-to-roll mode;
s320, providing a support substrate;
s330, arranging a support structure on one side of a support substrate;
and S340, attaching the support substrate to one side of the ultrathin glass substrate, which is deviated from the optical film layer, through the support structure.
Fig. 14 is a schematic structural diagram of a manufacturing process of the glass cover plate corresponding to fig. 13. As shown in fig. 14, the supporting structure 13 may be formed directly on one side surface of the supporting base 15, with the supporting base 15 being a substrate; in this case, no additional substrate is required for forming the supporting structure 13, which is beneficial to simplifying the structure of the glass cover plate, simplifying the process of the glass cover plate, reducing the cost of the glass cover plate, and facilitating the thinning of the glass cover plate. Illustratively, when the support structure 13 comprises a touch-functional layer, the touch-functional layer comprises touch electrodes; the touch electrode may be formed directly on one side surface of the supporting substrate 15, with the supporting substrate 15 as a substrate; and the process of forming the support structure 13 on one side surface of the support substrate 15 may include, but is not limited to, at least one of deposition, sputtering, etching, and the like.
Alternatively, the support structure 13 may be prepared first, and the support structure 13 may be provided after the support substrate 15 is provided, and then the support structure 13 may be attached to the support substrate 15. When the support substrate 15 and the support structure 13 are attached, a glue layer may be sprayed on the support structure 13 and/or the support substrate 15, so that the support substrate 15 and the support structure 13 can be attached together through the glue layer; the adhesive layer disposed between the support structure 13 and the support substrate 15 may include, but is not limited to, one of thermosetting adhesive, photosensitive adhesive, acrylic adhesive, silicon adhesive, and polyvinyl butyral resin adhesive layer. Correspondingly, when the supporting structure 13 is provided with the adhesive layer, the supporting structure 13 and the supporting substrate can be directly attached through the adhesive layer provided by the supporting structure 13; at this time, after the support structure 13 is prepared, the outermost side of the support structure 13 is usually provided with a release film, and when the support structure 13 and the support substrate 15 are attached, the release film needs to be peeled off and the adhesive layer of the support structure 13 is exposed; therefore, an additional glue layer is not required to be arranged, the manufacturing process and the structure of the glass cover plate can be further simplified, and the cost of the glass cover plate is favorably reduced.
It should be noted that, the above description is made by taking an example that the support substrate is attached to a side of the ultra-thin glass substrate away from the optical film layer through the support structure; in other embodiments of the present invention, when the ultra-thin glass substrate is cut from ultra-thin glass, the support substrate can be attached to the ultra-thin glass substrate after the ultra-thin glass web is cut into ultra-thin glass substrates; or directly attaching the support substrate to the ultra-thin glass substrate setting area of the ultra-thin glass roll before the ultra-thin glass roll is not cut.
Optionally, when the preparation method of the ultrathin glass substrate includes providing an ultrathin glass coiled material, forming an optical film layer on one side surface of the ultrathin glass coiled material in a roll-to-roll manner, and then cutting the ultrathin glass coiled material along a cutting line to form the ultrathin glass substrate, the method of arranging the support substrate on the side of the support structure away from the ultrathin glass substrate includes attaching the support substrate to an ultrathin glass substrate arrangement area on the side of the ultrathin glass coiled material away from the optical film layer through the support structure before cutting the ultrathin glass coiled material along the cutting line; and after the supporting substrate is attached to each position of the ultrathin glass coiled material, the ultrathin glass coiled material attached with the supporting substrate can be cut along the cutting line of the ultrathin glass coiled material so as to finally form the glass cover plate.
In the embodiment of the present invention, if the support substrate is attached before the ultra-thin glass roll is cut along the cutting line of the ultra-thin glass roll, the support structure may be first disposed on a side surface of the support substrate, and then the support substrate is attached to the ultra-thin glass roll through the support structure; or, the support structure is arranged on one side of the ultrathin glass coiled material, which is far away from the optical film layer, and then the ultrathin glass coiled material is attached to the support substrate through the support structure. Correspondingly, for the condition that the support substrate is attached after the ultrathin glass coiled material is cut to form the ultrathin glass substrate, the support structure can be arranged on one side of the ultrathin glass substrate, which is deviated from the optical film layer, or on the surface of one side of the support substrate, and then the support substrate is attached to the ultrathin glass substrate through the support structure. The embodiment of the invention does not specifically limit the attaching sequence and manner of the support structure. For convenience of description, the following takes as an example that the support structure is attached to the side of the ultra-thin glass substrate away from the optical film layer, and then attached to the support substrate, and an exemplary description is provided for the technical solution of the embodiment of the present invention.
Optionally, fig. 15 is a flowchart of a process of attaching a support substrate and an ultra-thin glass substrate according to an embodiment of the present invention. As shown in fig. 15, the method of disposing a support substrate on a side of a support structure facing away from an ultra-thin glass substrate includes:
s241, placing the support substrate on one side of the ultrathin glass substrate, which is far away from the optical film layer;
and S242, applying pressure to one side of the ultrathin glass substrate departing from the supporting substrate by adopting a roller or a pressure head in a roll-to-roll mode so as to enable one side of the ultrathin glass substrate departing from the optical film layer to be attached to the supporting substrate through the supporting structure.
Wherein, when adopting the running roller to exert pressure laminating ultra-thin glass substrate and bearing structure, the running roller can be located the one side that ultra-thin glass substrate was provided with the optics rete, is provided with the one side on optics rete to ultra-thin glass substrate through the running roller and exerts pressure to make bearing structure and ultra-thin glass substrate laminating be in the same place.
Accordingly, as shown in fig. 16, after the support substrate is placed on the side of the ultra-thin glass substrate 11 away from the optical film layer 12 and aligned, a certain pressure can be applied to the side of the support substrate 15 away from the ultra-thin glass substrate 11 by the roller 23, so that the support substrate 15 is attached to the ultra-thin glass substrate 11 through the support structure 13.
Alternatively, as shown in fig. 17, pressure may be applied to the side of the support substrate 15 away from the ultra-thin glass substrate 11 by a roller 23 located on the side of the support substrate 15 away from the ultra-thin glass substrate 11, and pressure may be applied to the side of the ultra-thin glass substrate provided with the optical film layer by a roller 23 located on the side of the ultra-thin glass substrate provided with the optical film layer, so as to attach the support substrate 15 and the ultra-thin glass substrate 11.
In addition, after the support substrate is aligned with the ultrathin glass substrate, a pressure head can be used for applying pressure to the side, away from the support substrate, of the ultrathin glass substrate; at this time, the surface of the support substrate, which is attached to the ultra-thin glass substrate, may be a curved surface or a flat surface.
Illustratively, as shown in fig. 18, when a pressure head 23 is used to apply pressure to the side of the ultra-thin glass substrate 11 away from the support substrate 15, the contact surface of the pressure head 23 and the ultra-thin glass substrate 11 is a pressing surface 231; the shape of the pressing surface 231 of the indenter 23 is complementary to the shape of one side surface 151 (bonding surface) of the support base 15 close to the ultra-thin glass substrate 11, and the orthographic projection of the support base 15 on the ultra-thin glass substrate 11 coincides with the orthographic projection of the pressing surface 231 of the indenter 23 on the ultra-thin glass substrate. At this time, the support substrate 15 may be placed on the carrier table 24, and the support substrate 15, the ultra-thin glass substrate 11, and the pressing head 23 may be aligned with each other through a corresponding alignment process; if the bonding surface 151 of the support base 15 is curved, the orthographic projection of the concave portion of the bonding surface 231 of the indenter 23 on the support base 15 coincides with the convex position of the bonding surface 151 of the support base 15, and the orthographic projection of the convex portion of the bonding surface 231 of the indenter 23 on the support base 15 coincides with the concave position of the bonding surface 151 of the support base 15; so, can make the laminating face 231 of pressure head 23 and the binding face 151 of support basement 15 keep unanimous at the vertical distance of each position department to can make each position of support basement 15 and the even laminating of one side that ultra-thin glass substrate 11 deviates from optical film layer 12, ensure that the performance of each position department of glass apron keeps unanimous, and then be favorable to improving the production yield of glass apron.
In addition, the pressfitting face of pressure head can also be less than with the binding face of support base, can set up corresponding detection sensor on the pressure head this moment, and at the in-process that adopts pressure head laminating support base and ultra-thin glass substrate, accessible detection sensor detects the pressure that the pressure head applyed to ultra-thin glass substrate and deviates from support base one side, and/or detects the interval between the pressfitting face of pressure head and the binding face of support base through detecting the sensor.
Illustratively, as shown in fig. 19, a position detection sensor 232 is disposed in the indenter 23, and a distance between a pressing surface 231 of the indenter 23 and a side surface 151 (a bonding surface) of the support substrate 15 close to the ultra-thin glass substrate 11 can be detected by using the position detection sensor 232, so that when the support substrate 15 and the ultra-thin glass substrate 11 are bonded by using the indenter 23, a distance between the bonding surface of the support substrate 15 and the pressing surface 231 of the indenter 23 can be maintained at a predetermined distance. For example, when the position detection sensor 232 disposed in the indenter 23 detects that the distance between the pressing surface 231 of the indenter 23 and the adhering surface of the support substrate 15 is greater than the predetermined distance, the indenter 23 may be moved downward until the distance between the pressing surface 231 of the indenter 23 and the adhering surface of the support substrate 15 is equal to the predetermined distance; when the position detection sensor 232 arranged in the pressing head 23 detects that the distance between the pressing surface 231 of the pressing head 23 and the adhering surface of the support substrate 15 is smaller than the preset distance, the pressing head 23 can be moved upwards until the distance between the pressing surface 231 of the pressing head 23 and the adhering surface of the support substrate 15 is equal to the preset distance; in this way, during the bonding process, the distance between the bonding surface 231 of the indenter 23 and each position of the support base 15 can be kept at the preset distance, and the bonding yield between the support base 15 and the ultra-thin glass substrate 11 can be ensured.
And/or, a pressure detection sensor 233 may be further disposed in the pressing head 23, and the pressure detection sensor 233 is used to detect the pressure applied by the pressing head 23 to each position of the ultra-thin glass substrate 11, so as to ensure that the pressure applied by the pressing head to the side of the ultra-thin glass substrate 11 away from the supporting substrate 15 is kept at the preset pressure when the pressing head 23 is used to attach the supporting substrate 15 and the ultra-thin glass substrate 11. For example, when the pressure detection sensor 233 provided in the indenter 23 detects that the pressure applied by the indenter 23 to the side of the ultra-thin glass substrate 11 facing away from the support base 15 is greater than a preset pressure, the pressure applied by the indenter 23 may be reduced to be equal to the preset pressure; when the pressure detection sensor 233 arranged in the pressure head 23 detects that the pressure applied by the pressure head 23 to the side of the ultra-thin glass substrate 11 away from the support base 15 is less than the preset pressure, the pressure applied by the pressure head 23 can be increased to be equal to the preset pressure; in this way, during the bonding process, the pressure applied by the indenter 23 to each position of the ultra-thin glass substrate 11 can be ensured to be consistent, so that the bonding yield between the support base 15 and the ultra-thin glass substrate 11 can be ensured.
Optionally, when the support substrate is disposed on the side of the support structure away from the ultra-thin glass substrate, a bonding layer may be disposed on the side of the ultra-thin glass substrate away from the optical film layer and/or the side of the support substrate close to the ultra-thin glass substrate, so that the side of the ultra-thin glass substrate away from the optical film layer is bonded to the support substrate through the bonding layer and the support structure.
For example, fig. 20 is a schematic view of a film structure of an ultra-thin glass substrate according to an embodiment of the present invention. As shown in fig. 20, when attaching the support substrate 15 to the side of the support structure 13 away from the ultra-thin glass substrate 11, a corresponding adhesive layer 161 may be disposed on the support substrate 15 and/or the support structure 13, so that the support substrate 15 is attached to the side of the support structure 13 away from the ultra-thin glass substrate 11 through the adhesive layer 161; alternatively, when the support structure 13 is attached to the side of the ultra-thin glass substrate 11 away from the optical film layer 12, a corresponding adhesive layer 162 may be disposed on the support structure 13 and/or the ultra-thin glass substrate 11, so that the support substrate 15 is attached to the side of the ultra-thin glass substrate 11 away from the optical film layer 12 through the adhesive layer 162. In this way, the support base 15 can be attached to the side of the ultra-thin glass substrate 11 away from the optical film layer 12 through the adhesive layer 16(161, 162) and the support structure 13. The adhesive layer 16 may include, but is not limited to, one of thermosetting adhesive, photosensitive adhesive, acrylic adhesive, silicon adhesive, and polyvinyl butyral resin adhesive.
Alternatively, when the adhesive layer comprises glue of a corresponding material, the adhesive layer may be provided by spraying the glue. Fig. 21 is a flowchart of a bonding layer setting method according to an embodiment of the present invention. As illustrated in fig. 21, a method of providing an adhesive layer according to an embodiment of the present invention includes:
s411, spraying glue of the bonding layer on one side of the ultrathin glass substrate, which is far away from the optical film layer, and/or one side of the support substrate, which is close to the ultrathin glass substrate, and applying preset pressure to each position of one side of the support substrate, which is far away from the ultrathin glass substrate, or one side of the ultrathin glass substrate, which is far away from the support substrate by adopting a pressure head so as to enable the support substrate to be adhered to one side of the ultrathin glass substrate, which is far away from the optical film layer;
s412, curing the glue of the bonding layer to form the bonding layer, so that the support substrate is attached to one side, deviating from the optical film layer, of the ultrathin glass substrate through the bonding layer and the support structure.
Illustratively, fig. 22 is a schematic flow chart of a method for disposing an adhesive layer corresponding to fig. 21. As shown in fig. 22, while spraying the glue of the adhesive layer 161 with the nozzle 25 to the attaching surface 151 of the support substrate 15 and/or the side of the support structure 13 away from the ultra-thin glass substrate 11, a preset pressure is applied to the side of the support substrate 15 away from the ultra-thin glass substrate 11 by the pressing head 23, where the preset pressure is a fixed value. Because the glue has fluidity, the glue of the bonding layer 161 is sprayed while the pressure head 23 is used for applying preset pressure, and the pressure applied by the pressure head 23 at each position of the supporting substrate 15 is kept consistent, so that the glue amount reserved at each position between the supporting substrate 15 and the supporting structure 13 is the same or fluctuates in a smaller range, and after the glue is cured to form the bonding layer 161, the thickness of the bonding layer 161 at each position between the supporting substrate 15 and the supporting structure 13 is kept consistent, which is beneficial to improving the bonding yield of the bonding of the supporting substrate 15 and the side, away from the optical film layer 12, of the ultrathin glass substrate 11 through the bonding layer 161 and the supporting structure 13, and further improving the production yield of the glass cover plate.
Accordingly, when the adhesive layer between the support structure 13 and the ultra-thin glass substrate 11 is disposed, the above method for disposing the adhesive layer 161 can be also used, and the technical principle thereof is similar to that when the adhesive layer 161 is disposed, and will not be described herein again.
Optionally, after the bonding layer is arranged between the ultrathin glass substrate and the support substrate, the bonding layer needs to be detected. Fig. 23 is a flowchart of a method for detecting an adhesion layer according to an embodiment of the present invention. As shown in fig. 23, the detection method of the adhesive layer includes:
s421, collecting image information of a bonding layer between the ultrathin glass substrate and the supporting substrate;
and S422, determining whether the bonding layer meets a preset standard or not according to the image information.
Illustratively, fig. 24 is a schematic view of a flow structure of a detection adhesive layer corresponding to fig. 23. As shown in fig. 24, after the adhesive layer 161 is cured, the image information of the adhesive layer 161 is collected by the image collector 26, the image information collected by the image collector 26 is obtained by the controller 28, and whether the adhesive layer 161 meets the preset standard is determined according to the image information; when the adhesive layer 161 meets a predetermined standard, the glass cover plate including the adhesive layer 161 meeting the predetermined standard is regarded as a qualified glass cover plate; when the adhesive layer 161 does not meet the predetermined standard, the glass cover plate including the adhesive layer 161 meeting the predetermined standard is regarded as an unqualified glass cover plate, and the code spraying mark is performed on the side of the ultra-thin glass substrate 11 provided with the optical film layer 12 by a code spraying device.
In addition, when the adhesive layer 161 is provided, moisture, particles, or the like in the environment may be wrapped in the adhesive layer 161, so that bubbles, particles, or the like may occur in the cured adhesive layer 161. When image acquisition is performed, if bubbles exist in the adhesive layer 161, the brightness of an image at the position of the bubble is greater than the brightness of images at other positions, that is, bright spots exist in the adhesive layer 161; if particles are present in the adhesive layer 161, the brightness of the image at the position of the particles may be less than the brightness of the image at other positions, i.e., dark spots are present in the adhesive layer 161. When the size of the bubbles or particles in the adhesive layer 161 exceeds a preset size range, the overall performance of the adhesive layer 161 is affected, so that the supporting substrate is bulged or poorly attached; meanwhile, when the amount of bubbles and/or particles in the adhesive layer 161 exceeds a predetermined amount, the performance of the adhesive layer 161 is also affected. Thus, according to the collected image information, if the image information shows that the number of the bright spots or the dark spots in the image of the adhesive layer 161 is within a preset range of the number, and the sizes of the bright spots or the dark spots in the image of the adhesive layer 161 are within a preset range of the size, it is determined that the adhesive layer 161 meets the preset standard; or, according to the acquired image information, if the image information indicates that the number of the bright spots or the dark spots in the image of the adhesive layer 161 is not within the preset number range and/or the size of the bright spots or the dark spots in the image of the adhesive layer 161 is not within the preset size range, determining that the adhesive layer does not meet the preset standard, and performing code spraying marking on the ultra-thin glass substrate 11.
For example, the preset range of sizes may be that the diameter of the bright or dark spot is less than 0.1 mm; accordingly, the number preset range may be that the number of the bright spots and/or the dark spots is less than 3. That is, when the number of the bright spots or the dark spots in the image of the adhesive layer 161 is less than 3, and the number of the bright spots or the dark spots in the image of the adhesive layer is directly less than 0.1mm, it is determined that the adhesive layer 161 meets the preset standard; on the contrary, it is determined that the adhesive layer 161 does not meet the preset standard.
In addition, when the adhesive layer 161 is subjected to image capture, it is necessary to set the image capture speed of the image capture device 26 so as to ensure that the image captured by the image capture device 26 covers the entire adhesive layer in the bonded structure of the ultra-thin glass substrate 11 and the support base 15. For example, when the bonding structure of the ultra-thin glass substrate and the supporting base is controlled to move in a preset direction at a preset rate V, the image collector 26 is used to capture the image information of the bonding layer 161 within the image collection range of the image collector at a preset frequency f; wherein, along the preset direction, the boundary distance of the image acquisition range is L; 1/f < L/V. In this way, the previous image and the next image captured by the image capturing device 26 are overlapped to ensure that after the images captured by the image capturing device 26 are spliced together, the images at each position of the bonding layer 161 in the attaching structure of the ultra-thin glass substrate 11 and the supporting base 15 can be obtained, so that the accuracy of image capturing and judgment can be improved.
Accordingly, when detecting the bonding layer between the support structure 13 and the ultra-thin glass substrate 11, the method for detecting the bonding layer 161 can be also used, and the technical principle thereof is similar to that of the method for detecting the bonding layer 161, and is not described herein again.
In the above, the detection of the bonding layer between the cut ultrathin glass substrate and the bonding structure of the support base is taken as an example, and the embodiment of the present invention is exemplarily described; in the embodiment of the invention, the supporting substrate can be arranged before the ultrathin glass coiled material is cut, namely the supporting substrate is attached to the ultrathin glass coiled material through the supporting structure and the bonding layer, so that the structure of the supporting substrate and the ultrathin glass coiled material can be detected by adopting the method, and each ultrathin glass substrate arrangement area of the ultrathin glass coiled material is equivalent to the attachment structure of the ultrathin glass substrate and the supporting substrate; therefore, code spraying can be carried out on the ultrathin glass substrate arrangement area when the image of the bonding layer in the ultrathin glass substrate arrangement area does not accord with the preset standard, and the ultrathin glass coiled material is cut after the detection of the bonding structure of the ultrathin glass coiled material and the supporting substrate is finished, so that the corresponding glass cover plate can be obtained.
Based on the same inventive concept, embodiments of the present invention further provide a glass cover plate, where the glass cover plate is prepared by using the method for preparing a glass cover plate provided by the embodiments of the present invention, so that the glass cover plate provided by the embodiments of the present invention has the beneficial effects of the method for preparing a glass cover plate provided by the embodiments of the present invention, and in the same way, reference may be made to the above description of the method for preparing a glass cover plate provided by the embodiments of the present invention, and details are not repeated herein.
Based on the same inventive concept, embodiments of the present invention further provide a display panel, where the display panel includes the glass cover plate provided in the embodiments of the present invention, so that the display panel provided in the embodiments of the present invention has the beneficial effects of the glass cover plate provided in the embodiments of the present invention, and in the same way, reference may be made to the above description of the glass cover plate provided in the embodiments of the present invention, and details are not repeated here.
For example, fig. 25 is a schematic diagram of a film structure of a display panel according to an embodiment of the present invention. As shown in fig. 25, the display panel 100 includes a display module 30 and a glass cover plate 10. The display panel 100 may be a curved display panel, a flexible display panel, a foldable display panel, or a flat display panel, which is not specifically limited in this embodiment of the present invention.
Based on the same inventive concept, embodiments of the present invention further provide a display device, where the display device includes the display panel provided in the embodiments of the present invention, so that the display device provided in the embodiments of the present invention has the beneficial effects of the display panel provided in the embodiments of the present invention, and in the same way, reference may be made to the above description of the display panel provided in the embodiments of the present invention, and details are not repeated herein.
For example, fig. 26 is a schematic structural diagram of a display device according to an embodiment of the present invention. As shown in fig. 26, the display device 200 includes the display panel 100, wherein the display device 200 includes, but is not limited to, an in-vehicle display screen, a folding screen, and the like.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious modifications, rearrangements, combinations and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims (32)

1. A method for preparing a glass cover plate is characterized by comprising the following steps:
providing an ultrathin glass substrate; an optical film layer is formed on one side of the ultrathin glass substrate in a roll-to-roll mode;
and a supporting structure is arranged on one side of the ultrathin glass substrate, which deviates from the optical film layer.
2. A method according to claim 1, wherein providing a support structure on a side of the ultra-thin glass substrate facing away from the optical film layer comprises:
providing a support structure;
and attaching the support structure to one side of the ultrathin glass substrate, which is deviated from the optical film layer.
3. A method according to claim 1, wherein providing a support structure on a side of the ultra-thin glass substrate facing away from the optical film layer comprises:
and forming a supporting structure on the surface of one side of the ultrathin glass substrate, which is far away from the optical film layer.
4. The method of manufacturing according to claim 1, wherein the providing an ultra-thin glass substrate comprises:
providing an ultra-thin glass web; the ultrathin glass coiled material comprises a plurality of ultrathin glass substrate arrangement areas and cutting lines positioned between the ultrathin glass substrate arrangement areas;
forming an optical film layer on the surface of one side of the ultrathin glass coiled material in a roll-to-roll mode;
cutting the ultra-thin glass web along the cutting line to form the ultra-thin glass substrate.
5. A manufacturing method according to claim 4, wherein providing a support structure on a side of the ultra-thin glass substrate facing away from the optical film layer comprises:
and before cutting the ultrathin glass coiled material along the cutting line, arranging a supporting structure on one side of the ultrathin glass coiled material, which is far away from the optical film layer.
6. The method of claim 1, further comprising:
providing a support substrate;
and arranging the support substrate on one side of the support structure departing from the ultrathin glass substrate.
7. The manufacturing method according to claim 6, wherein a side of the ultrathin glass substrate facing away from the optical film layer is provided with a support structure comprising;
providing a support structure, and attaching the support structure to the support substrate after providing the support substrate; or, forming the support structure on one side surface of the support substrate;
wherein, will support the basement set up in the one side that bearing structure deviates from ultra-thin glass substrate includes:
the supporting substrate is attached to one side, deviating from the optical film layer, of the ultrathin glass substrate through the supporting structure.
8. The method of manufacturing according to claim 6, wherein the providing an ultra-thin glass substrate comprises:
providing an ultra-thin glass web; the ultrathin glass coiled material comprises a plurality of ultrathin glass substrate arrangement areas and cutting lines positioned between the ultrathin glass substrate arrangement areas;
forming an optical film layer on the surface of one side of the ultrathin glass coiled material in a roll-to-roll mode;
cutting the ultra-thin glass web along the cutting line to form the ultra-thin glass substrate;
wherein, will support the basement set up in the one side that bearing structure deviates from ultra-thin glass substrate includes:
and cutting the ultrathin glass coiled material along the cutting line, and adhering the support substrate to the ultrathin glass substrate setting area on one side of the optical film layer through the support structure and the ultrathin glass coiled material before the ultrathin glass coiled material is cut by the cutting line.
9. The method of claim 6, wherein disposing the support substrate on a side of the support structure facing away from the ultra-thin glass substrate comprises:
placing the support substrate on one side of the ultrathin glass substrate, which is far away from the optical film layer;
through the mode of roll-to-roll, adopt running roller or pressure head to ultra-thin glass substrate deviates from support one side of basement and exert pressure, so that ultra-thin glass substrate deviates from one side of optics rete passes through bearing structure with support the laminating of basement.
10. The manufacturing method according to claim 9, wherein a surface of the support substrate, which is attached to the ultra-thin glass substrate, is a curved surface or a flat surface;
when a pressure head is adopted to apply pressure to one side of the ultrathin glass substrate, which is far away from the supporting substrate, the contact surface of the pressure head and the ultrathin glass substrate is a pressing surface;
the shape of the pressing surface of the pressing head is complementary with the shape of the surface of one side, close to the ultrathin glass substrate, of the support substrate, and the orthographic projection of the support substrate on the ultrathin glass substrate is superposed with the orthographic projection of the pressing surface of the pressing head on the ultrathin glass substrate.
11. The manufacturing method according to claim 9, wherein a surface of the support substrate, which is attached to the ultra-thin glass substrate, is a curved surface or a flat surface;
when a pressure head is adopted to apply pressure to one side of the ultrathin glass substrate, which is far away from the supporting substrate, the contact surface of the pressure head and the ultrathin glass substrate is a pressing surface;
a position detection sensor is arranged in the pressure head; detecting the distance between the pressing surface of the pressing head and the surface of one side, close to the ultrathin glass substrate, of the supporting substrate by using the position detection sensor; and/or the presence of a gas in the gas,
a pressure detection sensor is arranged in the pressure head; and detecting the pressure applied to each position of the ultrathin glass substrate by the pressure head by adopting the pressure detection sensor.
12. The method of claim 6, wherein disposing the support substrate on a side of the support structure facing away from the ultra-thin glass substrate comprises:
the ultra-thin glass substrate deviates from one side of the optical film layer and/or the supporting substrate is close to one side of the ultra-thin glass substrate, and a bonding layer is arranged on one side of the ultra-thin glass substrate, so that the ultra-thin glass substrate deviates from one side of the optical film layer and is attached to the supporting substrate through the bonding layer and the supporting structure.
13. A manufacturing method according to claim 12, wherein a bonding layer is disposed on a side of the ultra-thin glass substrate facing away from the optical film layer and/or a side of the support substrate close to the ultra-thin glass substrate, so that the side of the ultra-thin glass substrate facing away from the optical film layer is attached to the support substrate through the bonding layer and the support structure, and the manufacturing method comprises:
spraying glue of the bonding layer on one side of the ultrathin glass substrate, which is far away from the optical film layer, and/or one side of the support substrate, which is close to the ultrathin glass substrate, and applying preset pressure to each position of one side of the support substrate, which is far away from the ultrathin glass substrate, or one side of the ultrathin glass substrate, which is far away from the support substrate by adopting a pressure head so as to enable the support substrate to be adhered to one side of the ultrathin glass substrate, which is far away from the optical film layer;
and curing the glue of the bonding layer to form the bonding layer so that the support substrate is attached to one side, deviating from the optical film layer, of the ultrathin glass substrate through the bonding layer and the support structure.
14. The method of claim 12, further comprising, after disposing the support substrate on a side of the support structure facing away from the ultra-thin glass substrate:
collecting image information of a bonding layer between the ultrathin glass substrate and the supporting substrate;
and determining whether the bonding layer meets a preset standard or not according to the image information.
15. The manufacturing method according to claim 14, wherein it is determined whether the adhesive layer meets a preset standard based on the image information;
according to the image information, if the number of the bright spots or the dark spots in the image of the bonding layer is within a preset number range and the sizes of the bright spots or the dark spots in the image of the bonding layer are within a preset size range, determining that the bonding layer meets a preset standard;
and according to the image information, if the number of the bright spots or the dark spots in the image of the bonding layer is not within a preset number range and/or the size of the bright spots or the dark spots in the image of the bonding layer is not within a preset size range, determining that the bonding layer does not meet a preset standard, and carrying out code spraying marking on the ultrathin glass substrate.
16. The method of claim 14, wherein collecting image information of a bonding layer between the ultra-thin glass substrate and the support substrate comprises:
controlling the bonding structure of the ultrathin glass substrate and the support substrate to move along a preset direction at a preset speed V;
capturing image information of the bonding layer within an image acquisition range of an image acquirer by adopting the image acquirer at a preset frequency f;
wherein, along the preset direction, the boundary distance of the image acquisition range is L; 1/f < L/V.
17. The method of manufacturing according to claim 1, wherein the support structure includes a touch functional layer; the touch control function layer comprises a sensor setting area and a signal line setting area surrounding the sensor setting area; the sensor setting area comprises a touch sensor, and the signal line setting area comprises a touch signal transmission line;
before the ultra-thin glass substrate deviates from optical film layer one side sets up bearing structure, still include:
a shading structure is arranged on the surface of one side, away from the optical film layer, of the ultrathin glass substrate in a roll-to-roll mode; and the orthographic projection of the shading structure on the touch functional layer covers the signal line setting area.
18. A glass cover plate produced by the production method according to any one of claims 1 to 17, comprising:
the optical film layer is formed on the surface of one side of the ultrathin glass substrate;
and the supporting structure is positioned on one side of the ultrathin glass substrate, which is deviated from the optical film layer.
19. The glass cover plate according to claim 18, characterized in that the support structure comprises an optically functional layer and/or a touch-functional layer.
20. The glass cover sheet according to claim 19, wherein when the support structure comprises the optically functional layer, the optically functional layer comprises at least one of an explosion-proof layer, a rainbow-grained film layer, a phase retarder, and a polarizer.
21. The glass cover sheet according to claim 19, wherein when the support structure comprises the touch functional layer, the touch functional layer comprises a touch electrode;
the touch electrode is formed on the surface of one side, away from the optical film layer, of the ultrathin glass substrate;
or the glass cover plate further comprises a support substrate positioned on one side of the support structure, which is far away from the ultrathin glass substrate; the touch electrode is formed on one side surface of the support substrate close to the ultrathin glass substrate.
22. The glass cover sheet of claim 21, wherein the touch electrode comprises one of a metal mesh electrode, a nano-silver electrode, and a transparent electrode.
23. The glass cover plate according to claim 19, wherein when the support structure comprises the touch functional layer, the touch functional layer comprises a sensor disposition area and a signal line disposition area surrounding the sensor disposition area; the sensor setting area comprises a touch sensor, and the signal line setting area comprises a touch signal transmission line;
a shading structure is further arranged on the surface of one side, away from the optical film layer, of the ultrathin glass substrate; and the orthographic projection of the shading structure on the touch functional layer covers the signal line setting area.
24. The glass cover plate of claim 23, wherein the light blocking structure comprises an ink layer.
25. The glass cover sheet of claim 18, wherein the optical film layer comprises at least one of an anti-glare layer, an anti-reflection layer, and a fingerprint dissipation layer.
26. The glass cover sheet according to claim 18, further comprising:
and the support substrate is positioned on one side of the support structure, which is far away from the ultrathin glass substrate.
27. The glass cover sheet of claim 26, further comprising: the bonding layer is positioned between the support substrate and the ultrathin glass substrate;
the support substrate is attached to the surface of one side, provided with the support structure, of the ultrathin glass substrate through the bonding layer and the support structure.
28. The glass cover plate of claim 27, wherein the bonding layer comprises: one of thermosetting adhesive, photosensitive adhesive, acrylic adhesive, silicon adhesive and polyvinyl butyral resin adhesive layer.
29. The glass cover plate of claim 26, wherein a side surface of the support substrate adjacent to the ultra-thin glass substrate is curved or planar;
the material of the support substrate comprises one of plastic, glass, ceramic or metal.
30. The glass cover plate of claim 18, wherein the thickness T of the ultra-thin glass substrate is in the range of: t is more than or equal to 0.01mm and less than or equal to 0.1 mm.
31. A display panel comprising the glass cover plate according to any one of claims 18 to 30.
32. A display device comprising the display panel according to claim 31.
CN202011045399.7A 2020-09-28 2020-09-28 Glass cover plate, preparation method thereof, display panel and display device Active CN112174542B (en)

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