Glass laminate structure for manufacturing flexible glass and method of manufacturing the same

Abstract

Disclosed is a glass laminate structure of flexible glass and a method for manufacturing the same. The glass laminate structure includes a carrier substrate having a certain width and length and a first thickness; a laminate glass laminated on the carrier substrate and having a plurality of glass discs having a second thickness smaller than the first thickness; a high-viscosity adhesive line arranged at the peripheral portion of the carrier substrate and each glass disc to adhere the carrier substrate and the glass disc laminated adjacent to each other, and having a pair of concave-convex lines spaced apart in a first direction and extending in a second direction and a pair of linear lines spaced apart in the second direction and extending in the first direction; and a low-viscosity adhesive film arranged in a planar shape to cover a unit area of the carrier substrate and each glass disc defined by the concave-convex lines and the linear lines to adhere the carrier substrate and the glass disc laminated adjacent to each other. By preventing backflow of bubbles of the adhesive film, the effective unit area can be increased.

Description

TECHNICAL FIELD

[0001] The present application relates to a glass laminate structure for manufacturing a flexible glass for a display device and a method of manufacturing the same, and more particularly to a glass laminate structure for manufacturing a flexible glass for a display device and a method of manufacturing the same. BACKGROUND

[0002] Generally, in order to protect from scratches or impacts and external influences caused by exposure to the outside, a cover window is attached to the screen of a display device, and recently, as the demand for flexible display devices that are flexibly bent or folded increases, the demand for flexible cover windows is also increasing.

[0003] Recently, as a cover window for a relatively small small-sized display device, there is an increasing interest in a flexible glass window that uses ultrathin glass (UTG) to increase flexibility while reducing thickness. In particular, recently, the radius of curvature of the glass is significantly reduced by a flexible glass that reduces the thickness while not reducing the durability of the ultrathin glass (UTG). The flexible glass cover window using such UTG or flexible glass has the advantage of being able to sufficiently improve transparency and signal sensitivity instead of a plastic cover window such as CPI.

[0004] However, since the flexible glass is thin in thickness, various processing methods are required in the manufacturing process. In the properties of the glass substrate, when the thickness is below a certain level, various handling loads are caused in the manufacturing process due to reduced durability.

[0005] For example, for the manufacturing process efficiency of the ultrathin glass, a plurality of disc-shaped glasses having the same thickness as the ultrathin glass are first bonded on a base substrate to form a glass laminate structure in which durability is sufficiently secured, and the glass laminate structure is cut in a panel size unit for a display device to form a bundle of ultrathin glasses in which a plurality of ultrathin glasses are bonded to each other by an adhesive. Then, a plurality of ultrathin glasses that are separated from each other are simultaneously formed by removing the adhesive from the bundle of ultrathin glasses.

[0006] At this time, in the bonding process of the disc-shaped glasses having a thin thickness, the area, i.e., an effective area, in which the ultrathin glass bundle is formed from the glass laminate structure is reduced due to the fact that bubbles are not sufficiently removed.

[0007] When the bubbles located at the interface in the process of bonding the disc-shaped glasses are not sufficiently removed, the bonding between the disc-shaped glasses is poor, and the flatness is poor and the possibility of glass breakage during processing is increased due to a warping phenomenon that separates adjacent disc-shaped glasses.

[0008] Accordingly, there is a need for a new glass laminate structure that sufficiently removes bubbles from the interface between the disc glasses adhered to each other. SUMMARY

[0009] An object of the present application is to provide a glass laminate structure in which a high-viscosity concave-convex line generated by configuring a discharge flow of a linkage bubble in a peripheral portion of adjacent laminated disc glasses, thereby preventing a bubble backflow and an effective cell area is improved.

[0010] A glass laminate structure according to an embodiment of the present application for achieving the above object includes a carrier substrate having a carrier width in a first direction and a carrier length in a second direction substantially perpendicular to the first direction and a first thickness; a laminate glass laminated on the carrier substrate and having a plurality of glass discs having a second thickness smaller than the first thickness; a high-viscosity adhesive line configured to adhere the carrier substrate and the glass discs laminated adjacent to each other in a peripheral portion of the carrier substrate and the glass discs and having a pair of concave-convex lines spaced apart in the first direction and extending in the second direction and a pair of linear lines spaced apart in the second direction and extending in the first direction; and a low-viscosity adhesive film configured to cover a cell area of the carrier substrate and the glass discs defined by the concave-convex lines and the linear lines to adhere the carrier substrate and the glass discs laminated adjacent to each other.

[0011] (EFFECT OF INVENTION)

[0012] The glass laminate structure and the manufacturing method thereof according to the embodiment of the present application adhere between the carrier substrate and the glass discs using the adhesive line having a high viscosity and the adhesive film having a low viscosity, and the adhesive line configured in a traveling direction of a lamination process is formed as a concave-convex line extruded from a separate dam in which a dot-type block and a flow space are arranged in a row.

[0013] The flow space for discharging a bubble is sufficiently provided in the separate dam, and thus the bubble is sufficiently discharged during the lamination process, thereby being able to prevent a backflow defect in which the bubble fails to be discharged near the separate dam and flows back to a cell area.

[0014] Accordingly, as the residual bubble is minimized, the effective cell size of the glass laminate structure can be maximized.

[0015] However, the effects of the present application are not limited to the above-described effects, and various extensions can be made within the scope of the idea and the field of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0016] Figure 1 is a perspective view illustrating a glass laminate structure according to an embodiment of the present application.

[0017] Figure 2 is a plan view showing the adhesive line and the adhesive film arranged on the carrier substrate according to the present embodiment. Figure 1

[0018] Figure 3a is a cross-sectional view taken along the I-I' direction of the glass laminate structure shown in Figure 1 Figure 1

[0019] Figure 3b Figure 1

[0020] Figure 4

[0021] Figure 5

[0022] Figure 6 Figures 1 to 3b

[0023] Figures 7a to 7f Figure 6

[0024] Figure 8a Figure 7c

[0025] Figure 8b Figure 7c

[0026] Figure 8c Figure 7c

[0027] Figure 9 Figure 7e

[0028] Figure 10 Figure 7e

[0029] Figure 11 ​​​​​​​​​​​​​​​​​​​​​is a perspective view showing a glass laminate structure according to an embodiment of the present application, Figure 6 is a flowchart showing a process of bonding a glass disc to a carrier substrate as shown in DETAILED DESCRIPTION

[0030] Hereinafter, a deposition apparatus according to preferred embodiments of the present application will be described in detail with reference to the accompanying drawings. However, the present application is not limited to the following embodiments, and can be implemented in various other forms as long as a person having ordinary knowledge in the art, without departing from the technical idea of the present application.

[0031] In the accompanying drawings, the size of a substrate, a layer (film), a region, a pattern, or a structure is exaggerated for the purpose of clarity and precision of the present application. In the present specification, the terms of shape or geometric condition and physical characteristics, and values of the terms of length or angle, and values of physical characteristics, etc. are not limited to strict meanings of the terms, and are interpreted to include ranges capable of expecting the same degree of functions, unless otherwise specified in the context.

[0032] The terms used in the present application are used to describe only specific embodiments, and are not intended to limit the present application. Singular expressions include plural expressions unless otherwise clearly specified in the context. In the present application, it is understood that the terms of "include" or "have" or the like are used to designate the presence of characteristics, numbers, steps, operations, constituent elements, components or combinations thereof described in the specification, and do not preclude the presence or additional possibility of one or more other characteristics, numbers, steps, operations, constituent elements, components or combinations thereof.

[0033] In addition, when it is mentioned that each layer (film), region, electrode, pattern, or structure is formed "on", "above", or "below" a substrate, each layer (film), region, electrode, pattern, or structure, it means that each layer (film), region, electrode, pattern, or structure is directly formed on or under the substrate, or other layer (film), other region, other electrode, other pattern, or other structure is additionally formed on the substrate. In addition, when it is mentioned that a substance, layer (film), region, electrode, pattern, or structure is "first", "second", "third", and / or "preliminary", it is not used to limit the components, but only to distinguish each substance, layer (film), region, electrode, pattern, or structure. Therefore, "first", "second", "third", and / or "preliminary" can be selectively or alternatively used for each layer (film), region, electrode, pattern, or structure.

[0034] Figure 1 is a perspective view showing a glass laminate structure according to an embodiment of the present application, Figure 2 is a perspective view showing a glass laminate structure according to an embodiment of the present application,Figure 1 A plan view of the adhesive lines and the adhesive film provided on the carrier substrate according to the present application. Figure 3a is a cross-sectional view taken along the direction of I-I' of the glass laminate structure shown in Figure 1 is a cross-sectional view taken along the direction of I-I' of the glass laminate structure shown in Figure 1 is a cross-sectional view taken along the direction of I-I' of the glass laminate structure shown in Figure 3b is a cross-sectional view taken along the direction of I-I' of the glass laminate structure shown in Figure 1 is a cross-sectional view taken along the direction of II-II' of the glass laminate structure shown in Figure 3a and 3b only show up to the first glass disc. Figure 4 is a plan view of adhesive lines and an adhesive film provided on a carrier substrate according to another embodiment of the present application. Figure 5 is a plan view of adhesive lines and an adhesive film provided on a carrier substrate according to still another embodiment of the present application.

[0035] Referring to Figures 1 to 3b , a glass laminate structure 500 according to an embodiment of the present application includes a carrier substrate 100, a laminate glass 200 having a plurality of glass discs 201-215 stacked on the carrier substrate 100, a high-viscosity adhesive line 300 provided at a peripheral portion of the carrier substrate 100 and the glass discs 201-215 to line-bond and fix the carrier substrate 100 and the glass discs 201-215, a low-viscosity adhesive film 400 fixing the carrier substrate 100 and the glass discs 201-215 to each other by surface-bonding in a cell region C defined by the high-viscosity adhesive line 300, and a protective substrate 490 protecting the uppermost glass disc 215 from the outside by covering the laminate glass 200.

[0036] The glass laminate structure 500 according to an embodiment of the present application exemplarily discloses a laminate structure divided into an ultra thin glass (UTG) or a flexible glass for a cover window of a display device, but it is obvious that it can be applied in various ways if the laminate structure is formed by joining the glasses using an adhesive on a base substrate.

[0037] For example, the carrier substrate 100 can have a carrier width W in a first direction x and a carrier length L in a second direction y substantially perpendicular to the first direction x, and be provided as a base substrate for supporting the laminate glass 200, and have various physical properties according to the number and physical properties of the stacked glass discs 201-215.

[0038] In the case of the present embodiment, in the case where the laminate process is performed along the first direction x in a rectangular shape having a length L longer than the width W, a sufficient bubble discharge region can be ensured along the high-viscosity adhesive line 300.

[0039] In particular, a plurality of glass discs having a relatively extremely small thickness are stacked to form a glass stack structure, and thus a thickness larger than that of the stacked glass discs is required.

[0040] In addition, the glass discs are not finished products, but are provided as a supply unit of a component for forming a finished product such as a display device, and thus it is essential to transfer the glass discs after manufacturing to a finished product manufacturing line.

[0041] At this time, the glass discs, i.e., the stacked object glass discs such as thin plate glass or flexible glass, have a sufficiently small thickness, and thus are exposed to various transfer risks such as breakage or external particles during transfer.

[0042] The glass discs are stacked on the carrier substrate 100 in a transfer bundled unit to be combined as a stacked glass 200, so as to minimize the transfer risks as described above. Thus, the stacked glass 200 is stacked on the carrier substrate 100 to be transferred by a transfer tool such as a box or a case. At this time, the carrier substrate 100 is in direct contact with the transfer tool, thereby preventing direct contact with the stacked glass 200 and blocking the inflow of particles or dust into the inside of the stacked glass.

[0043] Thus, in the case of the present embodiment, the thickness of the carrier substrate 100, i.e., a first thickness t1, is set to be sufficiently thicker than the thickness of each of the glass discs 201 to 215, i.e., a second thickness t2, and can conform to the mounting space of the case. In addition, the carrier substrate 100 is set to be larger than or equal to the size of the lowermost glass disc 201. For example, the first thickness t1 can be set to have about 50 times to 200 times the second thickness t2.

[0044] In the case of the present embodiment, the glass discs 201 to 215 are provided as flexible glass each having various thicknesses t2 of 20 μm to 300 μm, and are provided in a bundle of 15 to 20, and thus the thickness t1 of the carrier substrate 100 can be set to have a range of 0.1 mm to 1.0 mm.

[0045] In particular, the carrier substrate 100 is set to have a substantially same coefficient of linear expansion as each of the stacked glass discs 201 to 215, thereby being able to prevent defects caused by a difference in thermal expansion between the carrier substrate and the glass discs during a heat treatment process of a subsequent process.

[0046] Thus, the thickness t1 of the carrier substrate 100 can be variously provided according to the number of stacked glass discs, the load, and the coefficient of linear expansion in the vertical direction of the carrier substrate 100, and the like.

[0047] The stacked glass 200 is composed of a plurality of first to fifteenth glass disks 201 to 215 stacked on the carrier substrate 100.

[0048] For example, the first to fifteenth glass disks 201 to 215 can include a flexible glass having a thickness t2 significantly smaller than the carrier substrate 100. For example, the flexible glass can include an ultra thin glass (UTG) having a thickness of about 100 to 250 μm on average and a curvature radius of 2 to 3 mm at the maximum or a glass film having a thickness of about 20 to 80 μm and a curvature radius of 1 mm or less.

[0049] The flexible glass is processed to have a certain thickness and curvature radius from a glass raw material, stored in a glass transfer table, and sequentially stacked and bonded on the carrier substrate 100.

[0050] However, in the case of the present embodiment, the glass disks are not necessarily limited to the flexible glass, and it is obvious that the technical idea of the present application can be applied in the case where a plurality of glass disks are bonded and bubbles of the bonding agent are removed.

[0051] For example, the glass disks are stacked in the number required on the carrier substrate 100 to form the stacked glass 200. In the present embodiment, the stacked glass is exemplarily disclosed by stacking 15 glass disks 201 to 215. However, this is exemplary, and it is obvious that a greater or smaller number of glass disks can be stacked according to the requirements of the manufacturing process and equipment of a finished product using the glass stacked structure 500, such as a display device.

[0052] The high-viscosity bonding line 300 and the low-viscosity bonding film 400 are disposed on the interfaces between the carrier substrate 100 and the first glass disk 201 and the first to fifteenth glass disks 201 to 215, so that the carrier substrate 100 and the glass disks 201 to 215 adjacent to each other can be bonded and fixed.

[0053] In particular, the high-viscosity bonding line 300 and the low-viscosity bonding film 400 provide a sufficient bonding force of strength, so that the carrier substrate 100 and the glass disks 201 to 215 can be fixed until being dissolved in a subsequent process.

[0054] The high-viscosity bonding line 300 is composed of a high-viscosity bonding material, so that the bonding material can be prevented from leaking to a stacking apparatus during a lamination process of forming the low-viscosity bonding film 400. In addition, the low-viscosity bonding film 400 can be composed of a low-viscosity bonding material and coated as a film of a sufficient thickness.

[0055] Hereinafter, the constitution of the high-viscosity adhesive line 300 and the low-viscosity adhesive film 400 will be described as an example using the carrier substrate 100 and the first glass disc 201. However, the same high-viscosity adhesive line 300 and low-viscosity adhesive film 400 can be provided between the glass discs 201 to 215 laminated above the carrier substrate 100 to adhere the glass discs 202 to 215 adjacent to each other.

[0056] For example, the high-viscosity adhesive line 300 is provided at the peripheral portion of the carrier substrate 100 and the first glass disc 201 to adhere the carrier substrate 100 and the first glass disc 201 laminated adjacent to each other. The high-viscosity adhesive line 300 is a deformation of a dam for preventing leakage of the adhesive, i.e., in a lamination process for forming the low-viscosity adhesive film 400, the bubbles generated in the process of uniformly applying the adhesive material are discharged, and the adhesive material is confined to a unit area to prevent contamination of the adhesive equipment by the adhesive material.

[0057] Thus, the high-viscosity adhesive line 300 is constituted of a shape and a material for preventing leakage of the adhesive material and sufficiently discharging the bubbles, and has a shape deformed according to the pressing process of the lamination process.

[0058] For example, the high-viscosity adhesive line 300 can be constituted of a pair of concave-convex lines 310 spaced apart in the first direction x and extending in the second direction y, and a pair of linear lines 320 spaced apart in the second direction y and extending in the first direction x.

[0059] The first direction x is a width direction of the carrier substrate 100, and is a direction in which the lamination process is performed on the glass disc 201, and the second direction y is a length direction of the carrier substrate 100.

[0060] Thus, during the lamination process for forming the low-viscosity adhesive film 400, the bubbles contained in the low-viscosity adhesive material are discharged in the first direction x, and thus the concave-convex lines 310 are formed to have a concave-convex shape by a combination of a dam for suppressing the flow of the adhesive material in the first direction x and a flow space for discharging the bubbles as described later, and the linear lines 320 are formed to have a uniform linear shape by a dam of a single rod shape without a flow space for discharging the bubbles.

[0061] Thus, during the lamination process, the bubbles of the low-viscosity adhesive material are sufficiently removed, so that the carrier substrate 100 and the first glass disc 201 can be stably adhered.

[0062] At this time, the concave-convex lines 310 are constituted of a unit length C lThe first and second length defining lines 312, 314 are constituted by the concave-convex line 310 and the linear line 320. In addition, the linear line 320 is constituted by first and second width defining lines 322, 324 extending in the first direction x and spaced apart in the second direction y to define the cell width Cw of the effective cell region C.

[0063] Therefore, the cell region C and the edge region M of the glass laminate structure 500 are divided by the high-viscosity adhesive line 300 extending along the peripheral portion of the carrier substrate 100 and the glass disc 201, and the majority of the low-viscosity adhesive film 400 is disposed in the cell region C.

[0064] The carrier substrate 100 and the glass disc 201 are face-bonded by the low-viscosity adhesive film 400 in the cell region C, and line-bonded by the high-viscosity adhesive line 300 in the peripheral portion P.

[0065] In the case of the present embodiment, the concave-convex line 310 and the linear line 320 have substantially the same thickness as the low-viscosity adhesive film 400, and have a thickness of about 30 to 60 μm corresponding to the size of the adhesive spacer 401 described later.

[0066] The concave-convex line 310 and the linear line 320 are constituted by a high-viscosity substance having a viscosity substantially greater than that of the low-viscosity adhesive film 400, so that the shape can be maintained during the lamination process.

[0067] For example, the high-viscosity substance includes an adhesive in a gel state having a viscosity of about 100,000 to 1,000,000 cp. Thereby, leakage of the adhesive substance to the outside of the carrier substrate 100 can be sufficiently prevented by maintaining the dam shape during the lamination process. For example, the high-viscosity substance can be constituted by an epoxy-based substance such as a bisphenol F type epoxy.

[0068] In particular, the concave-convex line 310 includes the main body portions B and the extension portions E alternately disposed in the second direction y for preventing leakage of the adhesive substance by the dams to the flow space for discharging bubbles.

[0069] The main body portions B have a first width Wl in the first direction x and are disposed as a plurality of portions spaced apart in the second direction y, and the extension portions E have a second width W2 smaller than the first width Wl and are disposed between the adjacent main body portions B to connect the main body portions B to each other. The extension portions E are located in the flow space between the adjacent dams for preventing leakage of the adhesive during the lamination process, and are formed by expansion by pressing the adjacent dams.

[0070] Therefore, the body part B is formed to have a first width Wl corresponding to a thickness of an original shape of the dam for preventing leakage, and in contrast, the extension part E is formed by fusion of extrusion residues of the adjacent dam for preventing leakage, and thus has a second width W2 smaller than the body part B.

[0071] As described later, the dam for preventing leakage of the adhesive is provided in a plurality of dot shapes spaced apart in the second direction y at intervals, and thus the body part B and the extension part E are configured in a linear shape alternately arranged in the second direction y corresponding to a flow space as a space between the dam and the same.

[0072] Therefore, since the bubbles contained in the low-viscosity adhesive substance are sufficiently discharged through the flow space, and the cell region C and the margin region M are separated by the extension part E, the backflow of the leaked bubbles to the cell region C can be blocked. Therefore, the effective cell region of the glass laminate structure 500 can be maximized.

[0073] In contrast, the linear line 320 is provided in a rod-type dam, and thus is provided in a single linear shape as an extrusion product of the rod-type dam.

[0074] Therefore, the upper surface of the carrier substrate 100 is divided into the cell region C defined by the high-viscosity adhesive line 300 and the margin region M located outside the cell region C, and the low-viscosity adhesive film 400 is applied in the cell region C.

[0075] Therefore, the glass disc 201 is fixed by being surface-contacted with the carrier substrate 100 through the cell region C using the low-viscosity adhesive film 400. That is, the carrier substrate 100 and the glass disc 201 are surface-contacted in the cell region C using the low-viscosity adhesive film 400, and are line-contacted using the high-viscosity adhesive line 300.

[0076] At this time, the low-viscosity adhesive film 400 is composed of a low-viscosity flowable adhesive substance to be set to form a uniform film quality through the cell region C using a lamination process. For example, the low-viscosity adhesive substance can be composed of a substance in a gel state having a viscosity of about 1,000 cp to 10,000 cp, thereby ensuring sufficient flowability in the lamination process. The low-viscosity adhesive substance can be composed of a polyurethane-based substance such as a polyurethane acrylate.

[0077] In particular, the low-viscosity adhesive film 400 can include a spacer 401 to maintain a minimum interval between the adhered carrier substrate 100 and the glass disc 201.

[0078] For example, the spacer 401 can be composed of inorganic particles having a size of about 30 to 60 μm, and can maintain the shape even under extrusion for coating the adhesive film. Thereby, the carrier substrate 100 and the glass disc 201 can be formed to have a minimum thickness corresponding to the size of the spacer 401.

[0079] At this time, the low-viscosity adhesive film 400 can locally overflow from the cell region C to the edge region M.

[0080] Figure 4 is a plan view showing an adhesive line and an adhesive film configured on a carrier substrate according to another embodiment of the present application.

[0081] Referring to Figure 4 The low-viscosity adhesive material can locally cover a portion of the edge region M beyond the concave-convex line 310 in the first direction x during the lamination process performed in the first direction x. Thereby, the low-viscosity adhesive film 400 can be composed of a cell film material 410 covering the cell region C and an end line 420 leaked to the edge region M.

[0082] The carrier substrate 100 includes a first edge region Ml divided from the cell region C by the concave-convex line 310 and a second edge region M2 divided from the cell region C by the linear line 320, and the end line 420 is provided on the first edge region Ml. There is no bubble discharged in the second direction y where the linear line 320 is provided, and thus the end line 420 is not provided in the second edge region M2.

[0083] At this time, the end line 420 is formed by adhesive liquid leaked by linkage with the discharge of the bubble, and thus has a shape corresponding to the shape of the concave-convex line 310. For example, the end line 420 has a recessed portion ELl corresponding to the main body portion B and a convex portion EL2 corresponding to the extension portion E, and the recessed portion ELl and the convex portion EL2 are provided in a linear shape continuously extending with the recessed portion ELl and the convex portion EL2 alternately arranged in the second direction y.

[0084] The end line 420 can be selectively provided, and the lamination process conditions can be set so that the low-viscosity adhesive material is not leaked from the carrier substrate 100 through the edge of the carrier substrate 100 by being arranged adjacent to the concave-convex line 310.

[0085] Preferably, within a minimum range for bubble discharge, the leaked adhesive liquid is allowed, and thus the end line 420 can be composed of only the convex portions EL2 spaced apart at a certain interval.

[0086] Figure 5is a plan view showing a bonding line and a bonding film configured on a carrier substrate according to still another embodiment of the present application.

[0087] Referring to Figure 5 The end portion line 420 is not configured in a second edge region M2 adjacent to the body portion B. Thus, the end portion line 420 is provided in a shape protruding from the extension portion E. Also, the second glass disc 202 is bonded on the upper surface of the first glass disc 201 by the high-viscosity bonding line 300 and the low-viscosity bonding film 400 having the same configuration, and the third to fifteenth glass discs 203 to 215 are sequentially bonded. Thus, the stacked glass 200 in which a plurality of glass discs are sequentially stacked is configured on the carrier substrate 100 by the high-viscosity bonding line 300 and the low-viscosity bonding film 400.

[0088] Also, the high-viscosity bonding line 300 and the low-viscosity bonding film 400 are configured on the upper surface of the fifteenth glass disc 215, and a protection substrate 490 is bonded, thereby being configured to cover the fifteenth glass disc 215 as the uppermost glass disc.

[0089] At this time, the protection substrate 490 can protect the stacked glass 200 disposed below from external impact or particles, and prevent various breakage or damage that can occur during the process of the glass stacked structure 500.

[0090] According to the glass stacked structure 500 as described above, it can be possible to minimize leakage of a low-viscosity bonding agent from a carrier substrate in a lamination process of bonding disc glasses by a high-viscosity uneven line 310 generated in a peripheral portion of the stacked disc glasses in linkage with the discharge flow of bubbles, and to maximize the size of an effective cell area by sufficiently discharging bubbles contained in the bonding agent.

[0091] Figure 6 is a flowchart illustrating a method of manufacturing the glass stacked structure shown in Figures 1 to 3b Figures 7a to 7f is a structural diagram illustrating the manufacturing method shown in Figure 6

[0092] Referring to Figures 6 to 7a A carrier substrate 100 having a carrier width W in a first direction x and a carrier length L in a second direction y and provided with a base substrate for supporting the stacked glass 200 is loaded to a support table of a lamination device (step S100).

[0093] The carrier substrate 100 is provided in a rectangular shape having a length L longer than the width W, and in the case where a lamination process is performed in the first direction x, a sufficient bubble discharge space can be secured.

[0094] ​​In a subsequent process, a stacked glass 200 is formed on the carrier substrate 100, thus providing a flat plate having a sufficient flatness to enable the respective glass discs 201 to 215 to be stacked flat and having a strength and rigidity to support the load of the stacked glass 200.

[0095] In addition, the carrier substrate 100 is set to have the same linear expansion coefficient as the glass discs 201 to 215 stacked thereon, thus being set to be able to prevent peeling or distortion caused by different thermal expansions from each other due to a subsequent heat treatment process.

[0096] In the case of the present embodiment, the carrier substrate 100 can be composed of glass having the same material as the glass discs and set to have a thickness of about 50 to 200 times the thickness of the glass discs stacked thereon.

[0097] A plurality of carrier substrates that can be selected according to the characteristics of the stacked glass 200 to be supported are stored in a carrier deck, and an appropriate carrier substrate 100 is selected from the carrier deck according to a start signal of the glass stacking process and loaded onto the upper surface of the stacking support table 10.

[0098] For example, the stacking support table 10 can be provided as a support unit of a stacking device equipped with a series of processing procedures for the glass stacking process and can be moved in one direction from an input port to an output port by a conveyance tool (not shown) such as a roller or a conveyor belt. The operation of the conveyance tool can be controlled by the driver 20, and the stacking support table 10 can be moved to an appropriate position in the order of the stacking process. Thereby, the position of the carrier substrate 100 fixed in the stacking support table 10 can be adjusted.

[0099] Referring to Figure 6 and Figure 7b , a pair of high-viscosity integral dams 320a extending in the first direction x and dividing the carrier substrate 100 into a standby cell region PC and a second edge region M2 spaced apart from the standby cell region PC in the second direction y are formed (step S200).

[0100] For example, the nozzle 30 connected to the driver 20 can be caused to spray an appropriate amount of high-viscosity adhesive material to the lower end peripheral portion of the carrier substrate 100 while moving in the first direction. Thereby, a next integral dam 322a is formed in the lower end peripheral portion of the carrier substrate 100.

[0101] Next, the nozzle 30 can be conveyed by a cell length C lThe nozzle 30 is moved in the first direction x while injecting the high-viscosity adhesive substance to the upper end peripheral portion of the carrier substrate 100. Thus, the upper integral dam 324a is formed in the upper end peripheral portion of the carrier substrate 100.

[0102] Therefore, the upper surface of the carrier substrate 100 between the upper integral dam 322a and the lower integral dam 324a is set as the spare cell region PC, and the edge region of the carrier substrate 100 and the region between the upper integral dam 322a and the lower integral dam 324a are set as the second edge region M2.

[0103] At this time, the high-viscosity adhesive substance is composed of an adhesive liquid having a gel state with a viscosity of about 100,000 cp to 1,000,000 cp, and is injected in the gel state from the nozzle 30 to the carrier substrate 100. Thus, the nozzle 30 can be composed of a nozzle with a high injection pressure to a degree that the high-viscosity adhesive liquid can be sufficiently injected. For example, the high-viscosity adhesive substance can be composed of a bisphenol F type epoxy.

[0104] The cell length C can be adjusted by adjusting the distance of the nozzle moved in the second direction y l The cell length C can be adjusted by adjusting the distance of the nozzle moved in the second direction y l The second direction dimension of the cell region C in the carrier substrate 100 is determined. Therefore, the second direction y transfer distance of the nozzle 30 can be adjusted according to the dimension of the cell region C required in the glass laminate structure 500.

[0105] Referring to Figure 6 and Figure 7c a pair of high-viscosity separation dams 310a extending in the second direction y and spaced apart in the first direction x are formed on the carrier substrate 100 to divide the spare cell region PC into a cell region C defined by the pair of separation dams 310a and a first edge region Ml outside the separation dams 310a (step S300). Thus, the pair of high-viscosity separation dams 310a composed of a plurality of dot blocks BL spaced apart by injection molding with a predetermined period to form a flow space FS can be formed.

[0106] For example, the nozzle 30 connected to the driver 20 can be moved in the second direction y while periodically injecting an appropriate amount of high-viscosity adhesive substance to the left peripheral portion of the carrier substrate 100. The nozzle 30 is moved in the second direction y at a certain speed while the injection operation is controlled by a pulse wave with a certain period to restrict the injection of the high-viscosity adhesive substance.

[0107] Thus, the high-viscosity adhesive is jetted during the jetting operation performed by the pulse wave to form the block BL in the left side peripheral portion, and the block BL is not formed by moving in the second direction y during the period when the jetting operation is not performed. Thus, in the region where the nozzle 30 is moved without jetting the adhesive, the block BL is not formed to provide the flow space FS exposed on the upper surface of the carrier substrate 100.

[0108] Thus, according to a certain pulse cycle, the formation and non-formation of the block BL are repeatedly performed in the second direction y to align a plurality of blocks BL extending in the second direction y at a certain interval and having a dot shape. The flow space FS is disposed between the adjacent dot-shaped blocks BL to form the left side separation-type dam 312a in which the blocks BL and the flow spaces FS are alternately disposed in the left side peripheral portion.

[0109] Next, the nozzle 30 is moved by a unit width Cw in the first direction y to dispose the nozzle 30 in the right side peripheral portion of the carrier substrate 100. The same jetting operation as described above is performed to form the right side separation-type dam 314a in which the blocks BL and the flow spaces FS are alternately disposed in the right side peripheral portion of the carrier substrate 100.

[0110] If the separation-type dam 310a is formed, the spare cell region PC between the left and right side separation-type dams 312a, 314a is set as the cell region C of the glass laminate structure, and the edge region of the carrier substrate 100 and the region between the left and right side separation-type dams 312a, 314a is set as the first edge region Ml.

[0111] At this time, the separation-type dam 310a is formed of the same high-viscosity adhesive as the integrated dam 320a to form a high-viscosity contact line 300 that defines the cell region C. The high-viscosity contact line 300 adheres the glass disc 201 and the carrier substrate 100 while sufficiently maintaining the shape against the extrusion force based on the roll pressing during the subsequent lamination process.

[0112] In particular, the separation-type dam 310a and the integrated dam 320a are formed to have an appropriate initial thickness t. As will be described later, if the jetting of the low-viscosity adhesive 400a is completed, the adherend glass disc is placed on the upper surface of the separation-type dam 310a and the integrated dam 320a and is extruded and adhered.

[0113] At this time, if the thickness t of the separation-type dam 310a and the integrated dam 320a is excessively thick, the amount of the high-viscosity adhesive that fills the flow space FS is increased by extrusion, so that air bubbles can not be sufficiently discharged during the lamination process, and when the thickness is excessively thin, a step is generated due to the spacer 401 to be described later provided in the low-viscosity adhesive 400a, and the adhesion force to the glass disc can not be sufficiently maintained.

[0114] Thus, the separation dam 310a and the integral dam 320a are formed to have a thickness t of about 50 to 100 μm.

[0115] At this time, the cell width Cw, which determines the first direction dimension of the cell region C in the carrier substrate 100, can be adjusted by adjusting the distance of the nozzle 30 moving in the first direction x. Thus, the first direction x transfer distance of the nozzle 30 can be adjusted according to the size of the cell region C required in the glass laminate structure 500.

[0116] The alignment state of the dot-type blocks BL is determined by the length of the blocks BL in the first direction, i.e., the dam length Da, and the length of the blocks BL in the second direction, i.e., the dam width Db, and the separation distance between the blocks BL adjacent to each other, i.e., the flow distance DC.

[0117] In the later-described lamination process, the dot-type blocks BL prevent the flow to the carrier substrate 100 by blocking the flow of the low-viscosity adhesive, and the separation spaces between the blocks BL, i.e., the flow spaces FS, provide flow paths for discharging the bubbles contained in the low-viscosity adhesive. Thus, the sizes of the blocks BL and the flow spaces FS can be variously provided according to the leakage and bubble discharge characteristics of the low-viscosity adhesive in the lamination process.

[0118] Figure 8a is a plan view showing a dot-type block shown in Figure 7c . Figure 8b is a plan view showing a first modification example of a dot-type block formed in Figure 7c . Figure 8c is a plan view showing a second modification example of a dot-type block formed in Figure 7c .

[0119] As shown in Figure 8a , the dam length Da and the dam width Db can be formed to be identical to each other to form a circular block. At this time, the flow space FS narrows and then widens from the cell region C toward the second edge region M2 flow space. Thus, when discharging the bubbles in the low-viscosity adhesive, the flow speed is relatively fast when flowing in from the cell region C, and the flow speed is relatively slow when flowing out to the first edge region Ml.

[0120] Thus, the flow distance DC can be determined to be an appropriate size in consideration of the flow characteristics of the bubbles discharged along the flow space FS. For example, the flow distance DC can be set to be about 0.3 to 1.0 times the dam length Da.

[0121] When the flow distance DC between the blocks is less than 0.3 times the length Db of the second direction of the block BL, the size of the flow space FS for discharging the bubbles is too small, and a suck back defect in which the bubbles are bounced back to the central portion of the cell region C can occur in the boundary region between the cell region C and the separation-type dam 310a.

[0122] The suck back defect of the bubbles forms a bubble residual region in the cell region C, and the cell region C is reduced in the bubble residual region, thereby reducing the number of effective panels generated from the glass laminate structure 500. Thus, the panel yield of the glass laminate structure 500 is reduced.

[0123] In contrast, when the flow distance DC is greater than 1.0 times the dam length Da, the size of the flow space FS for discharging the bubbles is formed to be too large, and the bubbles are separated from the cell region C to the second edge region M2 together with the low-viscosity adhesive material in the lamination process, and thus can overflow to the outside of the carrier substrate 100.

[0124] The low-viscosity adhesive liquid overflowing from the carrier substrate 100 causes contamination of the lamination support table 10 of the glass lamination apparatus, and thus can become a source of particles during a subsequent lamination process. Thus, the particle defect of the glass laminate structure 500 can increase.

[0125] Thus, the flow distance DC can be set to be about 0.3 times to 1.0 times the dam length Da.

[0126] The shape of the block BL can be variously deformed by appropriately adjusting the ratio of the dam length Da and the dam width Db. However, the block BL functions as a dam for preventing the low-viscosity adhesive material from overflowing from the carrier substrate 100, and thus the dam length Da can be formed to be greater than or equal to the dam width Db to be set to prevent leakage of the low-viscosity adhesive material.

[0127] As shown in FIG. 6, the dam length Da and the dam width Db can be set to be the same and formed to be circular. Figure 8a As shown in FIG. 7, the dam length Da can be formed to be greater than the dam width Db and formed to be elliptical. Figure 8b

[0128] Especially, as shown in FIG. 8, the dam length Da can be formed to be greater than the dam width Db while the side profile of the flow space FS is uniformly formed, and thus the flow velocity distribution of the bubbles is certainly maintained in the flow space FS. Figure 8c

[0129] ​​The shape of the end line 420 formed in the first edge region Ml is determined according to the flow rate distribution inside the flow space FS, and thus, it is obvious that various flow rate distributions can be had in order to improve the uniformity of the low-viscosity adhesive film 400 unless the low-viscosity adhesive material leaks from the edge of the carrier substrate 100 during the lamination process is performed.

[0130] Referring again to Figure 6 and Figure 7d , the low-viscosity adhesive 400a is supplied to irregularly cover a portion of the cell region C of the carrier substrate 100 (step S400).

[0131] For example, the low-viscosity adhesive in a gel state in a liquid form can be stored in a dispenser (not shown) connected to the driver 20 to move in the first and / or second direction. The dispenser can be composed of various components as long as it can store the low-viscosity adhesive in a gel state and eject it at a certain speed.

[0132] If the high-viscosity separation dam 310a and the integral dam 320a are formed and the cell region C is determined, the driver 20 ejects the adhesive to irregularly cover a portion of the cell region C by driving the dispenser. Thus, the low-viscosity adhesive 400a in a line shape is formed to cover a portion of the cell region C and is ejected at a predetermined thickness.

[0133] The low-viscosity adhesive 400a can be composed of a material having a low viscosity to have sufficient flowability so as to be coated in a uniform film quality over the entire cell region C by the lamination process. For example, the low-viscosity adhesive 400a can be composed of a material in a gel state having a viscosity of about 1,000 cp to 10,000 cp. In the case of the present embodiment, the low-viscosity adhesive material can be composed of a polyurethane-based material such as a polyurethane acrylate.

[0134] In particular, the low-viscosity adhesive 400a in a gel state can uniformly include spacers 401 to maintain a minimum gap between the carrier substrate 100 and the glass disc 201, for example, the spacers 401 can be composed of inorganic particles having a size of about 30 μm to 60 μm and can maintain the shape even under the pressing performed in the subsequent lamination process.

[0135] Hereinafter, a cross-sectional view related to the combination of the first glass disc 201 and the carrier substrate 100 will be described together with reference to Figures 7e to 7f . Figure 9 is a cross-sectional view taken in the III-III' direction of the combination of the carrier substrate 100 and the first glass disc 201 shown in Figure 7e , Figure 10is a cross-sectional view showing a roller structure for performing a lamination process on the first glass disc 201 shown in Figure 9

[0136] Referring to Figure 6 , Figure 7e and Figure 9 , the glass disc to be bonded, i.e., the first glass disc 201, is disposed on the upper surfaces of the high-viscosity separation dam 310a and the high-viscosity integration dam 320a (step S500). For example, the glass disc to be bonded, i.e., the first glass disc 201, is extracted from the glass transfer table 50 by the transfer robot and disposed on the side of the lamination support table 10, by being stored in the glass transfer table 50 in a predetermined thickness by a glass processing process. After the center axis of the carrier substrate 100 is aligned with the center axis, the first glass disc 201 is disposed on the upper surfaces of the high-viscosity separation dam 310a and the high-viscosity integration dam 320a.

[0137] At this time, depending on the injection form of the low-viscosity adhesive 400a, it can be in contact with the low-viscosity adhesive 400a or only in contact with the high-viscosity separation dam 310a and the high-viscosity integration dam 320a.

[0138] If the alignment and disposition of the first glass disc 201 are completed, the transfer robot returns to the standby area and starts the bonding process of the first glass disc 201.

[0139] Referring to Figure 6 , Figure 7f and Figure 10 , while moving in the first direction x with a certain driving force DF, the first glass disc 201 is pressurized with a predetermined compression force CF and the bubbles contained in the low-viscosity adhesive 400a are removed through the flow space FS, and the glass disc 201 and the carrier substrate 100 are bonded (step S600).

[0140] The first glass disc 201 and the carrier substrate 100 can be bonded according to the structure of the glass laminate structure 500 and the required conditions and by various bonding processes. For example, it can be attached mechanically using an adhesive or attached by forming a thin film-shaped adhesive film while removing bubbles inside the adhesive using a lamination process.

[0141] In the case of the present embodiment, it is exemplarily disclosed that the flexible glass disc is bonded on the carrier substrate 100 using a thin film-shaped adhesive film by performing a lamination process.

[0142] Figure 11 is a flowchart showing a bonding process of a glass disc and a carrier substrate shown in Figure 6 .​

[0143] As shown in FIG. 6, the first glass disc 201 is prepared for pressing by combining a cover glass CG for performing a lamination process to cover the first glass disc 201 (step S610). Figure 11

[0144] If the lamination process for bonding the first glass disc 201 and the carrier substrate 100 is started, the cover glass CG is extracted from the glass transfer table 50 and combined with the first glass disc 201. For example, the cover glass CG can be automatically extracted by a transfer tool (not shown) such as a transfer arm, and then fixed on the first glass disc 201 by various combining tools.

[0145] Next, the roller R is pressed to press the cover glass CG (step S620), and the roller R is moved linearly in the first direction x with a certain driving force DF while pressing the cover glass CG with a certain compression force CF (step S630).

[0146] For example, the roller R can be composed of a hot roller heated by a built-in heater provided therein, and can be provided in a linear type having a length capable of sufficiently covering the unit length Cl in the second direction y.

[0147] In the case of the present embodiment, the roller R is linearly moved in the first direction x while pressing the cover glass CG from the side of the unit region C adjacent to the left separation dam 312a.

[0148] Thus, the low-viscosity adhesive 400a is uniformly applied over the entire surface of the unit region C to form a low-viscosity adhesive film 400, and the bubbles contained in the low-viscosity adhesive 400a are extruded to the flow space FS together with the linear movement of the roller R toward the right separation dam 314a. Thus, the first glass disc 201 and the carrier substrate 100 are bonded to each other by the low-viscosity adhesive film 400 in the unit region C.

[0149] The separation dam 310a and the integral dam 320a are partially pressed by the pressing of the roller R to form a concave-convex line 310 and a linear line 320, respectively. The concave-convex line 310 and the linear line 320 bond the first glass disc 201 to the carrier substrate 100 in the peripheral portion for defining the unit region C.

[0150] Thus, the first glass disc 201 is bonded to the carrier substrate 100 by the concave-convex line 310 composed of a high-viscosity adhesive material, the high-viscosity adhesive line 300 composed of the linear line 320, and the low-viscosity adhesive film 400 composed of a low-viscosity adhesive material.

[0151] ​At this time, the bubbles contained in the low-viscosity adhesive 400a are discharged along the conveying direction of the roller R, i.e., the first direction x, but not along the second direction y, and thus the integral dam 320a only performs the function of defining the low-viscosity adhesive 400a to the unit region C. Thus, although the integral dam 320a is pressed by the roller R, it is formed as an integral linear line 320 that maintains the initial shape. The low-viscosity adhesive 400a is disposed only in the unit region C inside the linear line 320 and is applied so as not to overflow to the edge region M.

[0152] In contrast, as shown in FIG. 3, the separated dam 310a functions to stop the flow so that the low-viscosity adhesive 400a that is extruded along the first direction x while being discharged through the flow space FS does not overflow to the outside of the carrier substrate 100. Figures 8a to 8c

[0153] Thus, the dot-type blocks BL of the separated dam 310a are extruded to the flow space FS by being pressed by the roller, and the residue of the extruded blocks is filled in the flow space FS according to the flow shape of the bubbles that are discharged through the flow space FS.

[0154] Thus, the separated dam 310a is formed of a main body B having a first width w1 along the first direction x by being pressed by the roller R and an extension E formed in the flow space FS to connect the main body Bs adjacent to each other and having a second width w2 smaller than the first width w1 along the first direction x. The blocks BL and the flow space FS are alternately disposed along the second direction y, and thus the main body B and the extension E are also alternately disposed along the second direction y to constitute the concave-convex line 310.

[0155] At this time, the concave-convex line 310 and the linear line 320 and the low-viscosity adhesive film 400 are pressed by the roller R to have the same adhesive thickness and to have a minimum thickness corresponding to the size of the spacer 401 disposed inside the low-viscosity adhesive film 400. The high-viscosity adhesive line 300 and the low-viscosity adhesive film 400 are formed to have the same thickness so that the laminated first glass disc 201 does not damage the flatness while being adhered to the carrier substrate 100. In the case of the present embodiment, the high-viscosity adhesive line 300 and the low-viscosity adhesive film 400 are formed to have a minimum thickness of about 30 to 60 μm.

[0156] ​In particular, in the first edge region Ml of the carrier substrate 100, unlike the second edge region M2, in the case where the low-viscosity adhesive 400a extruded to the outer periphery of the cell region C during lamination is discharged together with the air bubbles to the flow space FS, the end line 420 can be selectively further formed. Thus, the low-viscosity adhesive layer 400 is composed of the cell film quality 410 covering the cell region and the end line 420 covering the first edge region Ml. Obviously, the end line 420 can also not be formed in the case where the leakage of the low-viscosity adhesive 400a is sufficiently blocked.

[0157] The flow space FS for discharging the air bubbles is sufficiently provided in the separation dam 310a, and thus it is possible to prevent the backflow of the air bubbles from the vicinity of the separation dam 310a to the cell region C due to the unsmooth discharge of the air bubbles during the lamination process.

[0158] When the backflow of the air bubbles occurs, the cell film quality 410 adjacent to the separation dam 310a is not adhered due to the air bubbles not being removed, and this causes the structure of the glass laminate structure 500 to be poor. However, according to the manufacturing method of the present application, the air bubbles are sufficiently discharged through the flow space FS, and thus it is possible to prevent the air bubbles from flowing back to the inside of the cell region C. Thus, it is possible to maximize the effective cell size of the glass laminate structure 500.

[0159] The shape of the end line 420 can be formed in various ways according to the structure of the separation dam 310a.

[0160] That is, the behavior of the air bubbles in the flow space FS can be adjusted by adjusting the dam length Da and the dam width Da of the block BL constituting the separation dam 310a and the flow length Dc, and the distribution of the low-viscosity adhesive 400a discharged together with the air bubbles in the first edge region Ml can be determined according to the change in the behavior of the air bubbles.

[0161] Thus, by adjusting the structure of the separation dam 310a to control the flow distribution of the leaked adhesive to prevent the low-viscosity adhesive 400a extruded toward the separation dam 310a from leaking to the edge periphery of the carrier substrate 100 beyond the separation dam 310a.

[0162] In the case of the present embodiment, the separation dam 310a is set to have a circular or elliptical block BL and a flow length Dc smaller than the dam length Da of the block BL, and thus an end line 420 having a recessed portion ELl corresponding to the main portion B and a protruding portion EL2 corresponding to the extension portion E is formed in the first edge region Ml. That is, the end line 420 is provided in a linear shape in which the recessed portion ELl and the protruding portion EL2 are alternately arranged in the first edge region Ml in the second direction y.

[0163] Thereafter, the same process as described with reference to Figures 7a to 7d The high-viscosity integral dam 320a, the high-viscosity separation dam 310a, and the low-viscosity adhesive 400a are formed on the first glass disc 201 by performing the same process as described with reference to Figure 7e and Figure 7f The lamination process is performed on the second glass disc 202 by performing the same process as described with reference to

[0164] The same process is repeated to adhere the third to fifteenth glass discs 203 to 215 to each other, and the uppermost protective substrate 490, thereby completing the glass laminate structure 500.

[0165] In the present embodiment, the same reference numerals are used for the high-viscosity adhesive lines and the low-viscosity adhesive films formed on the carrier substrate 100 and the first glass disc 201. That is, in the present application, the adhesive members arranged at the interfaces of the carrier substrate 100 or each glass disc 201 to 215 and adhered to the adjacent glass discs 201 to 215 or the carrier substrate 100 and the protective substrate 490 are all denoted by the same reference numerals, and have the same composition and configuration.

[0166] According to the method of manufacturing the glass laminate structure as described above, the separation dam 310a can be configured by a plurality of dot blocks and flow spaces aligned in a line, preventing the low-viscosity adhesive from leaking outside the carrier substrate, and effectively discharging the air bubbles provided inside the adhesive. Thus, by suppressing the backflow of the air bubbles to the cell region C, the effective cell size of the glass laminate structure 500 can be maximized.

[0167] According to the glass laminate structure and the method of manufacturing the same as described above, the adhesive lines arranged in the traveling direction of the lamination process are formed as the concave-convex lines extruded by the separation dam 310a configured by the dot blocks and the flow spaces aligned in a line, by adhering the carrier substrate and the glass discs using the adhesive lines having high viscosity and the adhesive films having low viscosity.

[0168] A flow space FS for discharging bubbles is sufficiently provided in the separation dam 310a, so that bubbles are sufficiently discharged during the lamination process, thereby enabling prevention of backflow defects due to failure of bubbles to be discharged near the separation dam 310a to flow back to the cell region C. Thus, the effective cell size of the glass laminate structure 500 can be maximized according to minimization of residual bubbles. The above has been described with reference to the preferred embodiments of the present application, but it will be understood by those skilled in the art that the present application can be variously modified and changed without departing from the scope of the concept of the present application and the field recited in the claims.

Claims

1. A glass laminated structure, wherein, include: The carrier substrate has a carrier width along a first direction, a carrier length along a second direction substantially perpendicular to the first direction, and a first thickness. A laminated glass, stacked on the carrier substrate, and having a plurality of glass disks having a second thickness less than the first thickness; A high-viscosity adhesive line is disposed on the periphery of the carrier substrate and each of the glass disks to bond the carrier substrate and the glass disks stacked adjacent to each other, and includes a pair of raised and recessed lines spaced apart in the first direction and extending in the second direction, and a pair of linear lines spaced apart in the second direction and extending in the first direction; and A low-viscosity adhesive film, configured in a planar shape, covers the unit regions of the carrier substrate and each of the glass disks defined by the raised and recessed lines and the linear lines, thereby bonding the carrier substrate and the glass disks stacked adjacent to each other. The high-viscosity adhesive line contains an adhesive with a viscosity of 100,000 cp to 1,000,000 cp, and the low-viscosity adhesive film contains an adhesive with a viscosity of 1,000 cp to 10,000 cp.

2. The glass laminate structure according to claim 1, wherein, The high-viscosity adhesive line contains bisphenol F type epoxy, and the low-viscosity adhesive film contains polyurethane acrylate.

3. The glass laminate structure according to claim 1, wherein, The low-viscosity adhesive film includes inorganic spacers to maintain the spacing between the adjacent carrier substrates and the glass disk.

4. The glass laminate structure according to claim 3, wherein, The spacers are provided as particles with a size of 30 μm to 60 μm.

5. The glass laminate structure according to claim 1, wherein, The raised / recessed line includes a main body portion having a first width along the first direction and an extension portion having a second width less than the first width and connected to the main body portion, the main body portion and the extension portion being alternately arranged along the second direction.

6. The glass laminate structure according to claim 5, wherein, The adhesive film has an end line, the end line having a recessed portion corresponding to the main body portion and a protruding portion corresponding to the extension portion, the recessed portion and the protruding portion being alternately arranged along the second direction.

7. The glass laminate structure according to claim 6, wherein, The carrier substrate and the glass disk have a second edge region divided by the linear line and the unit region, and a first edge region divided by the concave and convex lines and the unit region, with the end line only disposed in the first edge region.

8. The glass laminate structure according to claim 1, wherein, The glass disks each comprise flexible glass with a second thickness ranging from 1 / 200 to 1 / 50 of the first thickness.

9. The glass laminate structure according to claim 8, wherein, The flexible glass has a thickness of 20 μm to 300 μm.

10. The glass laminate structure according to claim 1, wherein, The glass stack structure also includes a protective substrate, which is bonded to and covers the uppermost glass disk by the high-viscosity adhesive line and the low-viscosity adhesive film disposed on the uppermost glass disk.

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