CROSS-REFERENCE TO RELATED APPLICATION

[0001] This application claims the benefit of Korean Patent Application No.

10-2019-0045639, filed on April 18, 2019, in the Korean Intellectual Property Office, the disclosure of which is incorporated herein in its entirety by reference.

BACKGROUND

[0002] The present disclosure relates to an article including glass, and more particularly, to a glass laminate.

[0003] A glass laminate may include a glass structure attached to a substrate. The glass laminate may be used for various purposes. For example, the glass laminate may be used for construction materials, outer packaging of home appliances, outer packaging of furniture, etc.

SUMMARY

[0004] The present disclosure provides a glass laminate in which deflection due to moisture or heat is reduced.

According to an aspect of the present disclosure, there is provided a glass laminate comprising a substrate; an adhesive layer on the substrate; and a glass structure on the adhesive layer and attached to the substrate via the adhesive layer, wherein the adhesive layer partially covers a main surface of the substrate, the main surface facing the glass structure.

[0005] According to another aspect of the present disclosure, there is provided a glass laminate comprising a substrate; an adhesive layer on the substrate; and a glass structure on the adhesive layer and attached to the substrate via the adhesive layer, wherein the adhesive layer comprises a plurality of portions that are spaced apart from each other and arranged in a regular pattern.

[0006] According to another aspect of the present disclosure, there is provided a glass laminate comprising a substrate; an adhesive layer on the substrate; and a glass structure on the adhesive layer and attached to the substrate via the adhesive layer, wherein the adhesive layer comprises a plurality of holes that are arranged in a regular pattern.

[0007] In one aspect, a glass laminate is provided, comprising: a substrate; an adhesive layer on the substrate; and a glass structure on the adhesive layer and attached to the substrate via the adhesive layer, wherein the adhesive layer partially covers a main surface of the substrate, the main surface facing the glass structure.

[0008] In some embodiments, a space between the substrate and the glass structure, the space not being filled by the adhesive layer, is filled with air.

[0009] In some embodiments, the adhesive layer comprises a plurality of portions that are apart from each other.

[0010] In some embodiments, a distance between a respective pair of portions that are adjacent to each other, from among the plurality of portions, is equal to or less than a value Lmax (unit: mm) obtained by a following formula:

[0011] wherein E is an elastic modulus (unit: MPa=N/mm2) of the glass structure, tl is a thickness (unit: mm) of the glass structure, f is a acceptable limit (unit: mm) of deflection of the glass structure due to a weight of the glass structure, and d is a density (unit: kg/mm3) of the glass structure.

[0012] In some embodiments, the value f, the acceptable limit of the deflection of the glass structure due to the weight of the glass substrate, is less than a thickness of the adhesive layer.

[0013] In some embodiments, the plurality of portions of the adhesive layer comprise a first portion, a second portion apart from the first portion in a first direction, a third portion apart from the first portion in a second direction, and a fourth portion apart from the first portion in a third direction.

[0014] In some embodiments, the first direction and the second direction are perpendicular to each other.

[0015] In some embodiments, the plurality of portions of the adhesive layer further comprise a fifth portion apart from the first portion in the third direction and located between the first portion and the fourth portion.

[0016] In some embodiments, the glass structure comprises an addition layer on the adhesive layer, a glass adhesive layer on the addition layer, and a glass layer on the glass adhesive layer. [0017] In some embodiments, the addition layer comprises steel.

[0018] In some embodiments, the adhesive layer covers from about 1% to about 99% of an area of the main surface of the substrate.

[0019] In some embodiments, the adhesive layer covers from about 1% to about 40% of an area of the main surface of the substrate.

[0020] In one aspect, a glass laminate is provided, comprising: a substrate; an adhesive layer on the substrate; and a glass structure on the adhesive layer and attached to the substrate via the adhesive layer,

[0021] wherein the adhesive layer comprises a plurality of portions that are spaced apart from each other and arranged in a regular pattern.

[0022] In some embodiments, the plurality of portions of the adhesive layer are arranged at a first spacing in a first direction.

[0023] In some embodiments, the plurality of portions of the adhesive layer are arranged at a first spacing in the first direction and at a second spacing in a second direction.

[0024] In some embodiments, the first direction and the second direction are perpendicular to each other.

[0025] In some embodiments, each of the first spacing and the second spacing is equal to or less than a value Lmax (unit: mm) obtained by a following formula:

[0026] wherein E is an elastic modulus (unit: MPa=N/mm2) of the glass structure, tl is a thickness (unit: mm) of the glass structure, f is a acceptable limit (unit: mm) of deflection of the glass structure due to a weight of the glass structure, and d is a density (unit: kg/mm3) of the glass structure.

[0027] In some embodiments, the plurality of portions of the adhesive layer comprise portions located in blocks and portions located outside the blocks, the blocks are arranged in at least one of a first direction and a second direction, the portions located outside the blocks are located between the blocks, and in each block, a first portion, a second portion apart from the first portion in the first direction, a third portion apart from the first portion in the second direction, a fourth portion apart from the first portion in a third direction, and a fifth portion apart from the first portion in the third direction and located between the first portion and the fourth portion are located. [0028] In some embodiments, each of a distance between the first portion and the second portion and a distance between the first portion and the third portion is equal to or less than a value Fmax (unit: mm) obtained by a following formula:

[0029] wherein E is an elastic modulus (unit: MPa=N/mm2) of the glass structure, tl is a thickness (unit: mm) of the glass structure, f is a acceptable limit (unit: mm) of deflection of the glass structure due to a weight of the glass structure, and d is a density (unit: kg/mm3) of the glass structure.

[0030] In one aspect, a glass laminate is provided, comprising: a substrate; an adhesive layer on the substrate; and a glass structure on the adhesive layer and attached to the substrate via the adhesive layer,

[0031] wherein the adhesive layer comprises a plurality of holes that are arranged in a regular pattern.

[0032] In some embodiments, a maximum dimension of each of the plurality of holes is equal to or less than a value Fmax (unit: mm) obtained by a following formula:

[0033] wherein E is an elastic modulus (unit: MPa=N/mm2) of the glass structure, tl is a thickness (unit: mm) of the glass structure, f is a acceptable limit (unit: mm) of deflection of the glass structure due to a weight of the glass structure, and d is a density (unit: kg/mm3) of the glass structure.

BRIEF DESCRIPTION OF THE DRAWINGS

[0034] Embodiments of the present disclosure will be more clearly understood from the following detailed description taken in conjunction with the accompanying drawings in which:

[0035] FIG. 1A is a plan view of a glass laminate according to an embodiment of the present disclosure;

[0036] FIG. IB is a cross-sectional view taken along line A-A' of FIG. 1A;

[0037] FIG. 2 is a cross-sectional view of a glass structure included in a glass laminate according to an embodiment of the present disclosure; [0038] FIG. 3 A is a plan view of a glass laminate according to an embodiment of the present disclosure;

[0039] FIG. 3B is a cross-sectional view taken along line B-B' of FIG. 3A;

[0040] FIG. 4 is a plan view of a glass laminate according to an embodiment of the present disclosure;

[0041] FIG. 5 is a plan view of a glass laminate according to an embodiment of the present disclosure;

[0042] FIG. 6 is a plan view of a glass laminate according to an embodiment of the present disclosure;

[0043] FIG. 7 is a plan view of a glass laminate according to an embodiment of the present disclosure;

[0044] FIG. 8 is a plan view of a glass laminate according to an embodiment of the present disclosure;

[0045] FIG. 9 is a plan view of a glass laminate according to an embodiment of the present disclosure;

[0046] FIG. 10 is a plan view of a glass laminate according to an embodiment of the present disclosure;

[0047] FIG. 11 is a plan view of a glass laminate according to an embodiment of the present disclosure;

[0048] FIG. 12A is a plan view of a glass laminate according to a first embodiment;

[0049] FIG. 12B is a plan view of a glass laminate according to a second embodiment; and

[0050] FIG. 13 is a graph showing average maximum deflections of glass laminates according to the first embodiment, the second embodiment, and a comparative embodiment.

DETAILED DESCRIPTION OF THE EMBODIMENTS

[0051] Hereinafter, embodiments of the present disclosure will be described in detail with reference to the accompanying drawings. However, embodiments of the present disclosure can be modified to various different forms and a scope of the present disclosure should not be construed as to be limited by embodiments described hereinafter. Embodiments of the present disclosure should be construed as to be provided to more fully describe the present disclosure to those having ordinary skill in the art. The same reference numerals may refer to the same elements throughout the accompanying figures. Further, various elements and regions in figures are schematically drawn. Thus, the present disclosure is not limited by a relative size or spacing drawn in the attached figures.

[0052] FIG. 1A is a plan view of a glass laminate 100 according to an embodiment of the present disclosure. FIG. IB is a cross-sectional view taken along line A-A' of FIG. 1A. FIG. 2 is a cross-sectional view of a glass structure 120 included in the glass laminate 100 according to an embodiment of the present disclosure.

[0053] Referring to FIGS. 1A through 2, the glass laminate 100 may include a substrate 110, an adhesive layer 130 on the substrate 110, and the glass structure 120 on the adhesive layer 130. The substrate 110 may have an arbitrary shape and be made of an arbitrary material. The glass structure 120 may include a glass layer 121. The glass layer 121 may include, for example, aluminosilicate glass, borosilicate glass, aluminoborosilicate glass, alkali(or alkali-free)-aluminosilicate glass, alkali(or alkali-free)-borosilicate glass, alkali(or alkali-free)-aluminoborosilicate glass, or soda lime glass, but is not limited thereto. In some embodiments, the glass structure 120 may be only comprised of the glass layer 121. In other embodiments, the glass structure 120 may further include another layer. For example, the glass structure 120 may further include an additional layer 123 attached to the glass layer 121. The additional layer 123 may be attached to the glass layer 121 via a glass adhesive layer 122. Although FIG. 2 illustrates that the glass structure 120 includes only one additional layer 123, the glass structure 120 may include more than one additional layer 123. The additional layer 123 may include arbitrary material. In some embodiments, the additional layer 123 may include steel. The glass adhesive layer 122 may include arbitrary material for attaching the additional layer 123 to the glass layer 121. The glass adhesive layer 122 may include, for example, an optically clear adhesive (OCA).

[0054] The adhesive layer 130 may partially cover a main surface of the substrate 110 facing the glass structure 120. That is, the adhesive layer 130 may not completely cover the main surface of the substrate 110 facing the glass structure 120. For example, the adhesive layer 130 may cover about 1 % to about 99 % of the area of the main surface of the substrate 110. For example, the adhesive layer 130 may cover about 1 % to about 40 % of the area of the main surface of the substrate 110. In other words, the adhesive layer 130 may partially fill the space between the substrate 110 and the glass structure 120. In some embodiments, a space S between the substrate 110 and the glass structure 120, the space S not being filled by the adhesive layer 130, may be filled with air. In other embodiments, the space S between the substrate 110 and the glass structure 120, the space S not being filled by the adhesive layer 130, may be filled with materials other than air. The adhesive layer 130 may include arbitrary material and may have arbitrary shape. For example, the adhesive layer 130 may include a pressure sensitive adhesive (PSA). In some embodiments, an elastic modulus of the adhesive layer 130 may be greater than 0 MPa and equal to or less than about 1 MPa, but it is not limited thereto. In some embodiments, a thickness t of the adhesive layer 130 may be about 0.06 mm to about 0.5 mm, but it is not limited thereto.

[0055] As such, due to partial attachment of the substrate 110 and the glass structure

120, deflection of the glass laminate 100 due to heat or water may be reduced. In some embodiments, deflection of the glass laminate 100 may be reduced to a value equal to or less than 3 mm/m. Although it is not limited to a particular theory, the reduction of deflection may be at least partly based on increased circulation of air and water. Also, the reduction of deflection may be at least partly based on reduced delivery of stress due to reduced adhesive force.

[0056] FIG. 3 A is a plan view of a glass laminate 100a according to an embodiment of the present disclosure. FIG. 3B is a cross-sectional view taken along line BB' of FIG. 3 A.

[0057] Referring to FIGS. 3A and 3B, an adhesive layer may include a plurality of portions that are apart from each other, for example, a first portion 130a and a second portion 130b. However, unlike it is illustrated in FIGS. 3A and 3B, the adhesive layer may include more than two portions. Also, although it is illustrated that each of the first and second portions 130a and 130b has a square shape, each of the first and second portions 130a and 130b may have a arbitrary shape, such as a triangular shape, a circular shape, an oval shape, a hexagonal shape, or a more complex shape.

[0058] In some embodiments, when 3 points bending model is used, in order that a deflection f of the glass structure 120 is equal to or less than an acceptable limit, a distance Li2 between the first portion 130a and the second portion 130b of the adhesive layer may be equal to or less than a value L _m ax (unit: mm) obtained by the following formula:

[0059] Here, E is an elastic modulus (unit: MPa=N/mm ² ) of the glass structure 120, ti is a thickness (unit: mm) of the glass structure 120, f is an acceptable limit (unit: mm) of deflection of the glass structure 120 due to a weight of the glass structure 120, and d is a density (unit: kg/mm ³ ) of the glass structure 120. In some embodiments, the elastic modulus E of the glass structure 120 may be greater than 0 MPa and equal to or less than about 200 GPa, but it is not limited thereto. In some embodiments, the thickness ti of the glass strucutre 120 may be greater than about 0 mm and equal to or less than about 50 mm, but it is not limited thereto. In some embodiments, the density d of the glass structure 120 may be greater than O x 10 ⁶ kg/mm ³ and equal to or less than 10 x lO ^-6 kg/mm ³ , but it is not limited thereto. The actual deflection f of the glass structure 120 has to be equal to or less than the acceptable limit of deflection of the glass structure 120. When the actual deflection f of the glass structure 120 is greater than the acceptable limit of the defelction of the glass structure 120, cracks may occur in the glass structure 120, the glass structure 120 may be damaged, or the glass structure 120 may contact the substrate 110. In some meobdiments, the acceptable limit f of the deflection of the glass structure 120 due to the weight of the glass structure 120 may be less than the thickness t of the adhesive layer 130. Herein, a distance between a first object and a second object may be a distance between a surface of the first object and a surface of the second object along a line extending between the center of gravity of the first object and the center of gravity of the second object.

[0060] FIG. 4 is a plan view of a glass laminate 100b according to an embodiment of the present disclosure.

[0061] Referring to FIG. 4, the glass laminate 100b may include the substrate 110, an adhesive layer on the substrate 110, and the glass structure 120 on the adhesive layer. The adhesive layer may include a plurality of portions, for example, a first portion 130a, a second portion 130b, a third portion 130c, and a fourth portion 130d. The second portion 130b may be apart from the first portion 130a in a first direction Di, the third portion 130c may be apart from the first portion 130a in a secon ddirection D2, and the fourth portion 130d may be apart from the first portion 130a in a thrid direction D3. The first direction Di, the second direction D2, and the third direction D3 may be arbitrary directions. In some embodiments, the third direction D3 may be at angles to the first direction Di and the second direction D2. In some embodiments, the fourth portion 130d may be apart from the second portion 130b in the second direction D2. In some embodiments, the fourth portion 130d may be apart from the third portion 130c in the first direction Di.

[0062] In order that the deflection of the glass structure 120 is equal to or less than an acceptable limit, distances L12, L13, L u, L23, L24, and L34 bewteen respective pairs of portions that are adjacent to each other, from among the plurality of portions 130a through 130d of the adhesive layer, may be equal to or less than the value L _m ax (unit: mm) of the Formula 1 described above.

[0063] FIG. 5 is a plan view of a glass laminate 100c according to an embodiment of the present disclosure. [0064] Referring to FIG. 5, the glass laminate 100c may include the substrate 110, an adhesive layer on the substrate 110, and the glass structure 120 on the adhesive layer. The adhesive layer may include a plurality of portions, for exapmle, a first portion 130a, a second portion 130b, a third portion 130c, and a fourth portion 130d. The second portion 130b may be apart from the first portion 130a in a first direction Di, the third portion 130c may be apart from the first portion 130a in a second direction D2, and the fourth portion 130d may be apart from the first portion 130a in a third direction D3. In some embodiments, the fourth portion 130d may be apart from the second portion 130b in the second direction D2. In some embodiments, the fourth portion 130d may be apart from the third portion 130c in the first direction Di. In some embodiments, as illsutrated in FIG. 5, the first direction Di may be perpendicular to the second direction D2.

[0065] In order that the deflection of the glass structure 120 is equal to or less than an acceptable limit, distances L12, L13, L u, L23, L24, and L34 bewteen respective pairs of portions that are adjacent to each other, from among the plurality of portions 130a through 130d of the adhesive layer, may be equal to or less than the value L _m ax (unit: mm) of the Formula 1 described above.

[0066] FIG. 6 is a plan view of a glass laminate lOOd according to an embodiment of the present disclosure.

[0067] Referring to FIG. 6, the glass laminate lOOd may include the substrate 110, an adhesive layer on the substrate 110, and the glass structure 120 on the adhesive layer. The adhesive layer may include a plurality of portions, for exapmle, a first portion 130a, a second portion 130b, a third portion 130c, a fourth portion 130d, and a fifth portion 130e. The second portion 130b may be apart from the first portion 130a in a first direction Di, the third portion 130c may be apart from the first portion 130a in a second direction D2, and the fourth portion 130d may be apart from the first portion 130a in a third direction D3. The fifth portion 130e may be apart from the first portion 130a in the third direction D3 and may be located between the first portion 130a and the fourth portion 130d. The first direction Di, the second direction D2, and the third direction D3 may be arbitrary directions.

[0068] In order that the deflection of the glass structure 120 is equal to or less than an acceptable limit, distances L12, L13, L15, L24, L25, L34 _, L35 _, and L45 bewteen respective pairs of portions that are adjacent to each other, from among the plurality of portions 130a through 130e of the adhesive layer, may be equal to or less than the value L _m ax (unit: mm) of the Formula 1 described above. Herein, a pair of objects that are adjacent to each other from among a plurality of objects denotes a pair of objects between which another object is not located from among the plurality of objects. For example, the third portion 130c, the fourth portion 130d, or the fifth portion 130e does not exist between the first portion 130a and the second portion 130b, and thus, the first portion 130a and the second portion 130b are adjacent to each other. However, the fifth portion 130e exists between the first portion 130a and the fourth portion 130d, and thus, the first portion 130a and the fourth portion 130d are not adjacent to each other.

[0069] FIG. 7 is a plan view of a glass laminate lOOe according to an embodiment of the present disclosure.

[0070] Referring to FIG. 7, the glass laminate lOOe may include the substrate 110, an adhesive layer on the substrate 110, and the glass structure 120 on the adhesive layer. The adhesive layer may include a plurality of portions, for exapmle, a first portion 130a, a second portion 130b, a third portion 130c, a fourth portion 130d, and a fifth portion 130e. The second portion 130b may be apart from the first portion 130a in a first direction Di, the third portion 130c may be apart from the first portion 130a in a second direction D2, and the fourth portion 130d may be apart from the first portion 130a in a third direction D3. The fifth portion 130e may be apart from the first portion 130a in the third direction D3 and may be located between the first portion 130a and the fourth portion 130d. The first direction Di may be perpendicular to the second direction D2.

[0071] In order that the deflection of the glass structure 120 is equal to or less than an acceptable limit, distances L12, L13, L15, L24, L25, L34 _, L35 _, and Ius bewteen respective pairs of portions that are adjacent to each other, from among the plurality of portions 130a through 130e of the adhesive layer, may be equal to or less than the value Lm _ax (unit: mm) of the Formula 1 described above.

[0072] In the drawings, only embodiments in which the adhesive layer includes two to five portions are illustrated. However, the adhesive layer may include more than five portions. Also, the arrangements of the plurality of portions of the adhesive layers illustrated in the drawings are only illustrative, and other arrangements may be used.

[0073] FIG. 8 is a plan view of a glass laminate lOOf according to an embodiment of the present disclosure.

[0074] Referring to FIG. 8, the glass laminate lOOf may include the substrate 1 10, the adhesive layer 130 on the substrate 110, and the glass structure 120 on the adhesive layer 130. The adhesive layer 130 may include a plurality of portions arranged in a regular pattern. Although FIG. 8 illustrates that the adhesive layer 130 includes four portions, the number of portions of the adhesive layer 130 is not limited thereto. Also, Although FIG. 8 illustrates that each of the portions of the adhesive layer 130 has a rectangular shape, the shape of each of the portions of the adhesive layer 130 is not limited thereto. The plurality of portions of the adhesive layer 130 may be arranged at a first spacing Li in a first direction Di. In order that the deflection of the glass structure 120 is equal to or less than an acceptable limit, the first spacing Li may be equal to or less than the value L _m a _x (unit: mm) of the Formula 1 described above.

[0075] FIG. 9 is a plan view of a glass laminate lOOg according to an embodiment of the present disclosure.

[0076] Referring to FIG. 9, the glass laminate lOOg may include the substrate 110, the adhesive layer 130 on the substrate 110, and the glass structure 120 on the adhesive layer 130. The adhesive layer 130 may include a plurality of portions arranged in a regular pattern. The plurality of portions of the adhesive layer 130 may be arranged at a first spacing Li in a first direction Di and a second spacing Li in a second direction D2. In order that the deflection of the glass structure 120 is equal to or less than an acceptable limit, each of the first spacing Li and the second spacing L2 may be equal to or less than the value L _m a _x (unit: mm) of the Formula 1 described above. In some embodiments, the first direction Di may be perpendicular to the second direction D2, but it is not limited thereto.

[0077] FIG. 10 is a plan view of a glass laminate lOOh according to an embodiment of the present disclosure.

[0078] Referring to FIG. 10, the glass laminate lOOh may include the substrate 110, an adhesive layer on the substrate 110, and the glass structure 120 on the adhesive layer. The adhesive layer may include a plurality of portions arranged in a regular pattern. The plurality of portions may include portions located in a block BL, for example, first through fifth portions 130a through 130e, and a portion located outsisde the block BL, for exapmle, a sixth portion 13 Of. a plurality of blocks BL, may be arranged in at least one of a first direction Di and a second direction D2. The portion located outside the blocks BL may be located between the blocks BL. In each of the blocks BL, the first through fifth portions 130a through 130e may be located. The second portion 130b may be apart from the first portion 130a in the first direction Di, the third portion 130c may be apart from the first portion 130a in the second direction D2, the fourth portion 130d may be apart from the first portion 130a in a third direction D3, and the fifth portion 130e may be apart from the first portion 130a in the third direction D3 and may be located between the first portion 130a and the fourth portion 130d. In order that the deflection of the glass structure 120 is equal to or less than an acceptable limit, a distance Gi between the first portion 130a and the second portion 130b and a distance G2 between the first portion 130a and the third portion 130c may be equal to or less than the value L _max (unit: nun) of the Formula 1 described above.

[0079] Each of the portions of the adhesive layer may have the same shape. For example, each of the portions of the adhesive layer may have a rectangular shape or a square shape, but it is not limited thereto.

[0080] The maximum number #BLi of the blocks BL in the first direction Di and the maximum number #BL> of the blocks BL in the second direction D2 may be calculated by using Formulas 2 and 3 as below

#B^— floor

(Formula 2)

r y - 20S _?

#BL 2 floor · + ί

max + 2W (Formula 3)

[0081] Here, the floor [ ] function outputs a floor value of a value in [ ], that is, an integer portion of the value in [ ], X is a length of the substrate 110 in the first direction Di, Y is a length of the substrate 110 in the second direction D ₂ , OSi is a distance by which the block BL is apart from a first edge El of the substrate 110 in the first direction Di, OS ₂ is a distance by which the block BL is apart from a second edge E2 of the substrate 110 in the second direction D2, Lm _ax is a value of the Formula 1 described above, L is a length of each portion of the adhesive layer in the first direction Di, and W is a length of each portion of the adhesive layer in the second direction D ₂ . In some embodiments, OSi and OS2 may be about 20 mm to about 100 mm.

[0082] Also, the distance Gi between respective portions of the adhesive layer in the first direction Di and the distance G2 between respective portions of the adhesive layer in the second direction D2 may be calculated by using Formulas 4 and 5as below.

( ormu a )

[0083] Thus, the maximum number #A of portions included in the adhesive layer may be calculated by using Formula 6 as below.

#A - 2#BL _j X 2#BL ₂ + (2#8Li - 1) X (2#BL ₂ - 1)

(Formula 6)

[0084] Also, a ratio R (%) of the total area of the adhesive layer to the area of the main surface of the substrate 110 may be calculated by using Formula 7 as below. (Formula 7)

[0085] The ratio R of the total area of the adhesive layer to the area of the main surface of the substrate 110 may be greater than 0 and equal to or less than about 50 %, for example, about 5 % to about 40 %. However, the ratio R of the total area of the adhesive layer to the area of the main surface of the substrate 110 is not limited thereto. Also, an arrangement different from the arrangement in FIG. 10 may be contemplated, and a different formula may be developed for the different arrangement.

[0086] FIG. 11 is a plan view of a glass laminate lOOi according to an embodiment of the present disclosure.

[0087] Referring to FIG. 11, the glass laminate lOOi may include the substrate 110, the adhesive layer 130 on the substrate 110, and the glass structure 120 on the adhesive layer 130. The adhesive layer 130 may have a plurality of holes H arranged in a regular pattern. In some embodiments, the holes H may be filled with air. The plurality of holes H may be arranged at a certain spacing in at least one of a first direction Di and a second direction D2. In order that the deflection of the glass structure 120 is equal to or less than an acceptable limit, the maximum size Z of each of the holes H, for example, in the case of FIG. 11, the diagonal length may be equal to or less than the value Lm _ax (unit: mm) of the Formula 1 described above.

[0088] FIG. 12A is a plan view of a glass laminate lOOj according to a first embodiment. FIG. 12B is a plan view of a glass laminate 100k according to a second embodiment. FIG. 13 is a graph showing average maximum deflections of the glass laminates lOOj and 100k according to the first embodiment and the second embodiment, and a glass laminate according to a comparative embodiment.

[0089] The glass laminate lOOj according to the first embodiment is illustrated in FIG.

12A. The area of the substrate 110 is 600 mm x 150 mm, the area of each of portions of an adhesive layer 130' is 46.2 mm x 11.55 mm, a first spacing Gi' is 56.56 mm, a second spacing G2' is 86.90 mm, and the ratio of the total area of the adheive layaer 130' to the area of the substrate 110 is 10 %. Also, the glass laminate 100k according to the second emboiment is illustrated in FIG. 12B. The area of the substrate 110 is 600 mm x 150 mm, the area of each of portions of an adhesive layer 130" is 108 mm x 27 mm, a first spacing Gi" is 42.67 mm, a second spacing G2" is 56.00 mm, and the ratio of the total area of the adheive layaer 130" to the area of the substrate 110 is 36 %. In the glass laminate according to the comparative embodiment, the area of a substrate is 600 mm x 150 mm and the ratio of the total area of an adhesive layer to the area of the substrate is 100 %. That is, the area of the adhesive layer is the same as the area of the substrate, in the comparative embodiment. That is, the adhesive layer may be totally attached to the substrate.

[0090] The glass laminates according to the first embodiment, the second embodiment, and the comparative embodiment are placed in a chamber having a temperature of 30 °C and a relative humidty of 90 %RH for fifteen days. The average maximum deflections over time are measured, and results of the measurements are illustrated in FIG. 13. Referring to FIG. 13, data points of the glass laminates lOOj and 100k according to the first and second embodiments are nearer to a line indicating the deflection of 0 than data points of the glass laminate according to the comparative embodiment, and thus, it may be recognized that the glass laminates lOOj and 100k according to the first and second embodiments have less deflection than the glass laminate according to the comparative embodiment. That is, the glass laminates according to the embodiments of the present disclosure have the absoluate value of the average maximum deflection, which is less than 3.0 mm/m.

[0091] While the present disclosure has been particularly shown and described with reference to embodiments thereof, it will be understood that various changes in form and details may be made therein without departing from the spirit and scope of the following claims.