Microcrystalline glass, microcrystalline glass products, matrix glass, glass lids, glass elements, display devices, and electronic devices

Abstract

To provide microcrystalline glass having excellent mechanical and optical properties.SOLUTION: The present invention provides a microcrystalline glass product. The microcrystalline glass product includes the following components in percentage by weight: SiO2: 45 to 70%, Al2O3: 8 to 18%, Li2O: 10 to 25%, ZrO2: 5 to 15%, P2O5: 2 to 10%, Y2O3: more than 0 to 8% or less. Through reasonable component design, the microcrystalline glass and the microcrystalline glass product according to the present invention have excellent mechanical and optical properties and are suitable for electronic apparatus or display devices.SELECTED DRAWING: None

Description

[Technical Field]

[0001] The present invention relates to microcrystalline glass, microcrystalline glass products, and methods for manufacturing the same, and more particularly to microcrystalline glass, microcrystalline glass products, and methods for manufacturing the same that have excellent mechanical and optical properties and are suitable for electronic devices or display devices. [Background technology]

[0002] Microcrystalline glass is a material in which crystals are precipitated within the glass through heat treatment. It possesses superior mechanical properties compared to ordinary glass, and its bending resistance, abrasion resistance, and drop resistance are far superior to those of ordinary glass due to the formation of microcrystals within the glass. Furthermore, the mechanical properties of microcrystalline glass can be further improved through chemical strengthening.

[0003] Based on the advantages described above, microcrystalline glass or glass products obtained after processing it are currently being applied to display devices or electronic devices that have high requirements for performance such as drop resistance, pressure resistance, and scratch resistance, and are particularly often used for the front and rear covers of portable electronic devices (mobile phones, watches, tablets, etc.).

[0004] With the advancement of science and technology, the demands on the optical performance of glass materials used in electronic devices and display devices have become higher. Optical performance refers to the properties expressed when a material absorbs, reflects, and refracts light rays, and includes transmittance, haze, |B| value, and refractive index. However, currently available microcrystalline glass has problems such as poor chemical strength, high haze, and large |B| values, making it difficult to use in display devices and electronic devices with high performance requirements.

[0005] Therefore, the development of microcrystalline glass and microcrystalline glass products that possess excellent mechanical and optical properties and are suitable for display devices and electronic equipment has become a goal pursued by scientists and engineers. [Overview of the project] [Problems that the invention aims to solve]

[0006] The technical problem to be solved by the present invention is to provide a glass-ceramic product having excellent mechanical performance and optical performance.

Means for Solving the Problem

[0007] The technical solution adopted by the present invention to solve the technical problem is as follows.

[0008] (1) A glass-ceramic product containing the following components by weight percentage: SiO2: 45 to 70%, Al2O3: 8 to 18%, Li2O: 10 to 25%, ZrO2: 5 to 15%, P2O5: 2 to 10%, Y2O3: more than 0 and 8% or less.

[0009] (2) The glass-ceramic product according to (1), further containing the following components by weight percentage: K2O: 0 to 5%, and / or MgO: 0 to 2%, and / or ZnO: 0 to 2%, and / or Na2O: 0 to 6%, and / or SrO: 0 to 5%, and / or BaO: 0 to 5%, and / or CaO: 0 to 5%, and / or TiO2: 0 to 5%, and / or B2O3: 0 to 5%, and / or Ln2O3: 0 to 5%, and / or fining agent: 0 to 2%, wherein the Ln2O3 is one or more of La2O3, Gd2O3, Yb2O3, and the fining agent is one or more of Sb2O3, SnO2, SnO, CeO2, F, Cl, and Br.

[0010] (3) A glass-ceramic product containing SiO2, Al2O3, Li2O, ZrO2, P2O5, and Y2O3, wherein the crystal phase of the glass-ceramic product contains lithium metasilicate, and the weight percentage of this lithium metasilicate is higher than that of other crystal phases.

[0011] (4) A glass-ceramic product containing SiO2, Al2O3, Li2O, ZrO2, and P2O5, and the average light |B| value of the glass-ceramic product with a thickness of 1 mm or less is 0.6 or less at 400 to 800 nm.

[0012] (5) A microcrystalline glass product containing a lithium metasilicate crystal phase, wherein the drop ball test height of the microcrystalline glass product is 1300 mm or more.

[0013] (6) The microcrystalline glass product according to any one of (3) to (5), containing the following components in weight %: SiO2: 45 to 70%, Al2O3: 8 to 18%, Li2O: 10 to 25%, ZrO2: 5 to 15%, P2O5: 2 to 10%, and Y2O3: more than 0 and 8% or less.

[0014] (7) The microcrystalline glass product according to any one of (3) to (6), further containing the following components in weight %: K2O: 0 to 5%, and / or MgO: 0 to 2%, and / or ZnO: 0 to 2%, and / or Na2O: 0 to 6%, and / or SrO: 0 to 5%, and / or BaO: 0 to 5%, and / or CaO: 0 to 5%, and / or TiO2: 0 to 5%, and / or B2O3: 0 to 5%, and / or Ln2O3: 0 to 5%, and / or fining agent: 0 to 2%, wherein the Ln2O3 is one or more of La2O3, Gd2O3, and Yb2O3, and the fining agent is one or more of Sb2O3, SnO2, SnO, CeO2, F, Cl, and Br.

[0015] (8) A microcrystalline glass product consisting of the following components in weight %: SiO2: 45 to 70%, Al2O3: 8 to 18%, Li2O: 10 to 25%, ZrO2: 5 to 15%, P2O5: 2 to 10%, Y2O3: more than 0 and 8% or less, K2O: 0 to 5%, MgO: 0 to 2%, ZnO: 0 to 2%, Na2O: 0 to 6%, SrO: 0 to 5%, BaO: 0 to 5%, CaO: 0 to 5%, TiO2: 0 to 5%, B2O3: 0 to 5%, Ln2O3: 0 to 5%, fining agent: 0 to 2%, wherein the Ln2O3 is one or more of La2O3, Gd2O3, and Yb2O3, and the fining agent is one or more of Sb2O3, SnO2, SnO, CeO2, F, Cl, and Br.

[0016] (9) The microcrystalline glass product according to any one of (1) to (8), wherein the content of each component satisfies one or more of the following five situations: 1) The ratio of Y2O3 / ZrO2 is greater than 0; 2) (Li2O+ZrO2+P2O5) / Y2O3 is 2.5~50.0; 3) Al2O3 / (Li2O+ZrO2+P2O5) is 0.16~0.9; 4) The Na2O / Y2O3 ratio is 6.0 or less; 5) The ratio of Y2O3 / (Al2O3+SiO2) is greater than 0 and less than or equal to 0.15.

[0017] (10) Microcrystalline glass products according to any one of (1) to (9) that contain the following components by weight %, SiO2: 50-65%, and / or Al2O3: 8-15%, and / or Li2O: 13-22%, and / or ZrO2: 6-12%, and / or P2O5: 3.5-9%, and / or K2O: 0-4%, and / or MgO: 0-1%, and / or ZnO: 0-1%, and / or Na2O: 1-5%, and / or Y2O3: 1-7%, and / or SrO: 0-3%, and / or The mixture consists of BaO: 0-3%, and / or CaO: 0-3%, and / or TiO2: 0-3%, and / or B2O3: 0-3%, and / or Ln2O3: 0-4%, and / or clarifying agent: 0-1%, where Ln2O3 is one or more of La2O3, Gd2O3, and Yb2O3, and the clarifying agent is one or more of Sb2O3, SnO2, SnO, CeO2, F, Cl, and Br.

[0018] (11) Microcrystalline glass products described in any one of (1) to (10) whose content of each component satisfies one or more of the following five conditions: 1) Y2O3 / ZrO2 is between 0.1 and 1.0; 2) (Li2O+ZrO2+P2O5) / Y2O3 is 3.0~40.0; 3) Al2O3 / (Li2O+ZrO2+P2O5) is 0.18~0.6; 4) The Na2O / Y2O3 ratio is 0.1-5.0; 5) The ratio of Y2O3 / (Al2O3+SiO2) is 0.01 to 0.12.

[0019] (12) Microcrystalline glass products according to any one of (1) to (11) containing the following components by weight %: SiO2: 53-63%, and / or Al2O3: 8-12%, and / or Li2O: 14-21%, and / or ZrO2: 7-12%, and / or P2O5: 4-8%, and / or K2O: 0-2%, and / or Y2O3: 2-6%, and / or B2O3: 0-2%, and / or Na2O: 1.5-4% The composition is as follows: %, and / or SrO: 0-1%, and / or TiO2: 0-1%, and / or BaO: 0-1%, and / or CaO: 0-1%, and / or Ln2O3: 0-3%, and / or clarifying agent: 0-0.5%, where Ln2O3 is one or more of La2O3, Gd2O3, and Yb2O3, and the clarifying agent is one or more of Sb2O3, SnO2, SnO, CeO2, F, Cl, and Br.

[0020] (13) Microcrystalline glass products described in any one of (1) to (12) whose content of each component satisfies one or more of the following five conditions: 1) Y2O3 / ZrO2 is 0.2~0.6; 2) (Li2O+ZrO2+P2O5) / Y2O3 is between 4.0 and 21.0; 3) Al2O3 / (Li2O+ZrO2+P2O5) is 0.19~0.5; 4) The Na2O / Y2O3 ratio is 0.3-2.0; 5) The ratio of Y2O3 / (Al2O3+SiO2) is 0.03 to 0.09.

[0021] (14) A microcrystalline glass product according to any one of (1) to (13), wherein the component does not contain SrO, and / or BaO, and / or CaO, and / or ZnO, and / or PbO, and / or As2O3, and / or TiO2, and / or B2O3, and / or Ln2O3, and / or F, and / or Ta2O5.

[0022] (15) The microcrystalline glass product according to any one of (1) to (14), wherein the crystalline phase of the microcrystalline glass product comprises lithium monosilicate and / or lithium phosphate.

[0023] (16) The microcrystalline glass product according to any one of (1) to (15), wherein the crystalline phase of the microcrystalline glass product mainly contains lithium monosilicate, the weight percentage of lithium monosilicate is higher than that of other crystalline phases, and lithium monosilicate accounts for 10% to 63.5%, preferably 15% to 55%, of the microcrystalline glass product.

[0024] (17) The microcrystalline glass product according to any one of (1) to (16), wherein the microcrystalline glass product contains a lithium phosphate crystalline phase, and the weight percentage of the lithium phosphate crystalline phase in the microcrystalline glass product is 3 to 15%, preferably 5 to 12%.

[0025] (18) The microcrystalline glass product according to any one of (1) to (17), wherein the surface stress of the microcrystalline glass product is 600 MPa or more, preferably 650 MPa or more, and more preferably 700 MPa or more.

[0026] (19) The microcrystalline glass product according to any one of (1) to (18), wherein the four-point bending strength of the microcrystalline glass product is 600 MPa or more, preferably 650 MPa or more, and more preferably 700 MPa or more.

[0027] (20) The microcrystalline glass product according to any one of (1) to (19), wherein the ion exchange layer depth of the microcrystalline glass product is 20 μm or more, preferably 30 μm or more, and more preferably 40 μm or more.

[0028] (21) The microcrystalline glass product according to any one of (1) to (20), wherein the height of the ball drop test of the microcrystalline glass product is 1300 mm or more, preferably 1400 mm or more, and more preferably 1500 mm or more.

[0029] (22) The fracture toughness of the microcrystalline glass product is 1 MPa·m 1 / 2Preferably, the above is 1.1 MPa·m 1 / 2 The above is a comfort level of 1.2 MPa·m. 1 / 2 The above applies to any one of the microcrystalline glass products described in (1) to (21).

[0030] (23) The Vickers hardness of the microcrystalline glass product is 700 kgf / mm². 2 Preferably 720 kgf / mm² 2 More preferably 730 kgf / mm 2 The above applies to any one of the microcrystalline glass products described in (1) to (22).

[0031] (24) The microcrystalline glass product according to any one of (1) to (23), wherein the crystallinity of the microcrystalline glass product is 50% or more, preferably 60% or more, and more preferably 70% or more.

[0032] (25) The microcrystalline glass product according to any one of (1) to (24), wherein the crystal grain size of the microcrystalline glass product is 50 nm or less, preferably 40 nm or less, and more preferably 30 nm or less.

[0033] (26) A microcrystalline glass product according to any one of (1) to (15), wherein the degree of cloudiness of the microcrystalline glass product with a thickness of 1 mm or less is 0.15% or less, preferably 0.12% or less, and more preferably 0.1% or less.

[0034] (27) A microcrystalline glass product with a thickness of 1 mm or less, having an average transmittance of 89% or more at wavelengths of 400 to 800 nm, as described in any one of (1) to (26).

[0035] (28) A microcrystalline glass product with a thickness of 1 mm or less, having a transmittance of 91% or more at a wavelength of 550 nm, as described in any one of (1) to (27).

[0036] (29) A microcrystalline glass product according to any one of (1) to (28), wherein the average optics |B| value of the microcrystalline glass product with a thickness of 1 mm or less at 400 to 800 nm is 0.6 or less, preferably 0.55 or less, and more preferably 0.5 or less.

[0037] (30) The microcrystalline glass product according to any one of (26) to (29), wherein the thickness of the microcrystalline glass product is 0.2 to 1 mm, preferably 0.3 to 0.9 mm, more preferably 0.5 to 0.8 mm, and even more preferably 0.55 mm, 0.6 mm, 0.68 mm, 0.72 mm, or 0.75 mm.

[0038] (31) The microcrystalline glass product according to any one of (1) to (7), wherein the microcrystalline glass product contains a coloring agent.

[0039] (32) The microcrystalline glass product according to (31), wherein the coloring agent contains the following components by weight: NiO: 0-4%, and / or Ni2O3: 0-4%, and / or CoO: 0-2%, and / or Co2O3: 0-2%, and / or Fe2O3: 0-7%, and / or MnO2: 0-4%, and / or Er2O3: 0-8%, and / or Nd2O3: 0-8%, and / or Cu2O: 0-4%, and / or Pr2O3: 0-8%, and / or CeO2: 0-4%.

[0040] (33) The microcrystalline glass product according to either (31) or (32), wherein the coloring agent contains, by weight %, the following components: NiO: 0.1-4%, and / or Ni2O3: 0.1-4%, and / or CoO: 0.05-2%, and / or Co2O3: 0.05-2%, and / or Fe2O3: 0.2-7%, and / or MnO2: 0.1-4%, and / or Er2O3: 0.4-8%, and / or Nd2O3: 0.4-8%, and / or Cu2O: 0.5-4%, and / or Pr2O3: 0.4-8%, and / or CeO2: 0.5-4%.

[0041] (34) The microcrystalline glass product according to either (31) or (32), wherein the coloring agent contains, by weight %, the following components: NiO: 0.1-3%, and / or Ni2O3: 0.1-3%, and / or CoO: 0.05-1.8%, and / or Co2O3: 0.05-1.8%, and / or Fe2O3: 0.2-5%, and / or MnO2: 0.1-3%, and / or Er2O3: 0.4-6%, and / or Nd2O3: 0.4-6%, and / or Cu2O: 0.5-3%, and / or Pr2O3: 0.4-6%, and / or CeO2: 0.5-3%.

[0042] (35) The microcrystalline glass product according to either (31) or (32), wherein the coloring agent contains, by weight, the following components: NiO: 0.1-3%, and / or Ni2O3: 0.1-3%.

[0043] (36) The microcrystalline glass product according to either (31) or (32), wherein the coloring agent contains, by weight, the following components: CoO: 0.05-1.8%, and / or Co2O3: 0.05-1.8%.

[0044] (37) The microcrystalline glass product according to either (31) or (32), wherein the coloring agent contains, by weight, the following components: Cu2O: 0.5-3%, and / or CeO2: 0.5-3%.

[0045] (38) The microcrystalline glass product according to either (31) or (32), wherein the coloring agent contains the following components by weight: Fe2O3: 0.2-5%, CoO: 0.05-0.3%, or Fe2O3: 0.2-5%, Co2O3: 0.05-0.3%, or Fe2O3: 0.2-5%, CoO: 0.05-0.3%, NiO: 0.1-1%, or Fe2O3: 0.2-5%, Co2O3: 0.05-0.3%, NiO: 0.1-1%.

[0046] (39) The microcrystalline glass product according to either (31) or (32), wherein the coloring agent contains, by weight, the following components: Pr2O3: 0.4-6%, or Fe2O3: 0.2-5%, or MnO2: 0.1-3%, or Er2O3: 0.4-6%, or Nd2O3: 0.4-6%.

[0047] (40) The microcrystalline glass product according to either (31) or (32), wherein the coloring agent contains the following components by weight: Er2O3: 0.4-6%, Nd2O3: 0.4-4%, MnO2: 0.1-2%.

[0048] The present invention also provides microcrystalline glass having excellent mechanical and optical properties.

[0049] The technical solution employed by this invention to solve the technical problems is as follows:

[0050] (41) Microcrystalline glass containing the following components by weight %, SiO2: 45-70%, Al2O3: 8-18%, Li2O: 10-25%, ZrO2: 5-15%, P2O5: 2-10%, Y2O3: greater than 0% and less than 8%.

[0051] (42) The microcrystalline glass described in (41), further comprising the following components by weight: K2O: 0-5%, and / or MgO: 0-2%, and / or ZnO: 0-2%, and / or Na2O: 0-6%, and / or SrO: 0-5%, and / or BaO: 0-5%, and / or TiO2: 0-5%, and / or CaO: 0-5%, and / or B2O3: 0-5%, and / or Ln2O3: 0-5%, and / or clarifying agent: 0-2%, wherein Ln2O3 is one or more of La2O3, Gd2O3, and Yb2O3, and the clarifying agent is one or more of Sb2O3, SnO2, SnO, CeO2, F, Cl, and Br.

[0052] (43) A microcrystalline glass containing SiO2, Al2O3, Li2O, ZrO2, P2O5 and Y2O3, wherein the crystalline phase of the microcrystalline glass contains lithium monosilicate, and the weight % of this lithium monosilicate is higher than that of the other crystalline phases.

[0053] (44) A microcrystalline glass containing SiO2, Al2O3, Li2O, ZrO2, and P2O5, with a thickness of 1 mm or less and an average optical |B| value of 0.6 or less at 400-800 nm.

[0054] (45) A microcrystalline glass containing a lithium silicate crystalline phase, wherein the height of the ball drop test of the microcrystalline glass is 1000 mm or more.

[0055] (46) Microcrystalline glass as described in any one of (43) to (45), containing the following components by weight: SiO2: 45-70%, Al2O3: 8-18%, Li2O: 10-25%, ZrO2: 5-15%, P2O5: 2-10%, and Y2O3: greater than 0% and 8% or less.

[0056] (47) Microcrystalline glass according to any one of (43) to (46), further comprising the following components by weight %,: K2O: 0-5%, and / or MgO: 0-2%, and / or ZnO: 0-2%, and / or Na2O: 0-6%, and / or SrO: 0-5%, and / or BaO: 0-5%, and / or CaO: 0-5%, and / or TiO2: 0-5%, and / or B2O3: 0-5%, and / or Ln2O3: 0-5%, and / or clarifying agent: 0-2%, wherein Ln2O3 is one or more of La2O3, Gd2O3, and Yb2O3, and the clarifying agent is one or more of Sb2O3, SnO2, SnO, CeO2, F, Cl, and Br.

[0057] (48) Microcrystalline glass consisting of the following components by weight %, comprising: SiO2: 45-70%, Al2O3: 8-18%, Li2O: 10-25%, ZrO2: 5-15%, P2O5: 2-10%, Y2O3: greater than 0% and less than 8%, K2O: 0-5%, MgO: 0-2%, ZnO: 0-2%, Na2O: 0-6%, SrO: 0-5%, BaO: 0-5%, CaO: 0-5%, TiO2: 0-5%, B2O3: 0-5%, Ln2O3: 0-5%, and a clarifying agent: 0-2%, wherein Ln2O3 is one or more of La2O3, Gd2O3, and Yb2O3, and the clarifying agent is one or more of Sb2O3, SnO2, SnO, CeO2, F, Cl, and Br.

[0058] (49) Microcrystalline glass as described in any one of (41) to (48), whose components are expressed in weight percent and whose content of each component satisfies one or more of the following five conditions: 1) The ratio of Y2O3 / ZrO2 is greater than 0. 2) (Li2O+ZrO2+P2O5) / Y2O3 is 2.5~50.0; 3) Al2O3 / (Li2O+ZrO2+P2O5) is 0.16~0.9; 4) The Na2O / Y2O3 ratio is 6.0 or less; 5) The ratio of Y2O3 / (Al2O3+SiO2) is greater than 0 and less than or equal to 0.15.

[0059] (50) Microcrystalline glass according to any one of (41) to (49) containing the following components by weight %: SiO2: 50-65%, and / or Al2O3: 8-15%, and / or Li2O: 13-22%, and / or ZrO2: 6-12%, and / or P2O5: 3.5-9%, and / or K2O: 0-4%, and / or MgO: 0-1%, and / or ZnO: 0-1%, and / or Na2O: 1-5%, and / or Y2O3: 1-7%, and / or SrO: 0-3%, and / or The mixture consists of TiO2: 0-3%, and / or BaO: 0-3%, and / or CaO: 0-3%, and / or B2O3: 0-3%, and / or Ln2O3: 0-4%, and / or clarifying agent: 0-1%, where Ln2O3 is one or more of La2O3, Gd2O3, and Yb2O3, and the clarifying agent is one or more of Sb2O3, SnO2, SnO, CeO2, F, Cl, and Br.

[0060] (51) Microcrystalline glass as described in any one of (41) to (50), whose components are expressed in weight percent and whose content of each component satisfies one or more of the following five conditions: 1) Y2O3 / ZrO2 is between 0.1 and 1.0; 2) (Li2O+ZrO2+P2O5) / Y2O3 is 3.0~40.0; 3) Al2O3 / (Li2O+ZrO2+P2O5) is 0.18~0.6; 4) The Na2O / Y2O3 ratio is 0.1-5.0; 5) The ratio of Y2O3 / (Al2O3+SiO2) is 0.01 to 0.12.

[0061] (52) Microcrystalline glass according to any one of (41) to (51), containing the following components by weight %: SiO2: 53-63%, and / or Al2O3: 8-12%, and / or Li2O: 14-21%, and / or ZrO2: 7-12%, and / or P2O5: 4-8%, and / or K2O: 0-2%, and / or Y2O3: 2-6%, and / or B2O3: 0-2%, and / or Na2O: 1.5-4%, and / or SrO: 0-1%, and / or The mixture consists of TiO2: 0-1%, and / or BaO: 0-1%, and / or CaO: 0-1%, and / or Ln2O3: 0-3%, and / or clarifying agent: 0-0.5%, where Ln2O3 is one or more of La2O3, Gd2O3, and Yb2O3, and the clarifying agent is one or more of Sb2O3, SnO2, SnO, CeO2, F, Cl, and Br.

[0062] (53) Microcrystalline glass as described in any one of (41) to (52), wherein the components are expressed in weight percent and the content of each component satisfies one or more of the following five conditions: 1) Y2O3 / ZrO2 is 0.2~0.6; 2) (Li2O+ZrO2+P2O5) / Y2O3 is between 4.0 and 21.0; 3) Al2O3 / (Li2O+ZrO2+P2O5) is 0.19~0.5; 4) The Na2O / Y2O3 ratio is 0.3-2.0; 5) The ratio of Y2O3 / (Al2O3+SiO2) is 0.03 to 0.09.

[0063] (54) A microcrystalline glass according to any one of (41) to (53), wherein the component does not contain SrO, and / or BaO, and / or CaO, and / or ZnO, and / or PbO, and / or As2O3, and / or TiO2, and / or B2O3, and / or Ln2O3, and / or F, and / or Ta2O5.

[0064] (55) The microcrystalline glass according to any one of (41) to (54), wherein the crystalline phase of the microcrystalline glass comprises lithium monosilicate and / or lithium phosphate.

[0065] (56) The microcrystalline glass according to any one of (41) to (55), wherein the crystalline phase of the microcrystalline glass product mainly contains lithium monosilicate, the weight percentage of lithium monosilicate is higher than that of other crystalline phases, and lithium monosilicate accounts for 10% to 63.5%, preferably 15% to 55%, of the microcrystalline glass.

[0066] (57) The microcrystalline glass according to any one of (41) to (56), wherein the crystalline phase of the microcrystalline glass contains a lithium phosphate crystalline phase, and the weight percentage of the lithium phosphate crystalline phase in the microcrystalline glass is 3 to 15%, preferably 5 to 12%.

[0067] (58) The microcrystalline glass according to any one of (41) to (57), wherein the crystallinity of the microcrystalline glass is 50% or more, preferably 60% or more, and more preferably 70% or more.

[0068] (59) The microcrystalline glass according to any one of (41) to (58), wherein the crystal grain size of the microcrystalline glass is 50 nm or less, preferably 40 nm or less, and more preferably 30 nm or less.

[0069] (60) The coefficient of thermal expansion of the microcrystalline glass is 75-95 × 10 -7 A microcrystalline glass described in any one of (41) to (59), which is / K.

[0070] (61) The microcrystalline glass according to any one of (41) to (60), wherein the refractive index of the microcrystalline glass is 1.5700 to 1.5800.

[0071] (62) The microcrystalline glass according to any one of (41) to (61), wherein the height of the ball drop test of the microcrystalline glass body is 1000 mm or more, preferably 1100 mm or more, and more preferably 1200 mm or more.

[0072] (63) The Vickers hardness of the microcrystalline glass is 650 kgf / mm 2 or more, preferably 680 kgf / mm 2 or more, more preferably 700 kgf / mm 2 or more, and the microcrystalline glass according to any one of (41) to (62).

[0073] (64) The haze degree of the microcrystalline glass with a thickness of 1 mm or less is 0.15% or less, preferably 0.12% or less, more preferably 0.1% or less, and the microcrystalline glass according to any one of (41) to (63).

[0074] (65) The average transmittance of the microcrystalline glass with a thickness of 1 mm or less at a wavelength of 400 to 800 nm is 89% or more, and the microcrystalline glass according to any one of (41) to (64).

[0075] (66) The transmittance of the microcrystalline glass with a thickness of 1 mm or less at a wavelength of 550 nm is 91% or more, and the microcrystalline glass according to any one of (41) to (65).

[0076] (67) The average light |B| value of the microcrystalline glass with a thickness of 1 mm or less at 400 to 800 nm is 0.6 or less, preferably 0.55 or less, more preferably 0.5 or less, and the microcrystalline glass product according to any one of (41) to (66).

[0077] (68) The thickness of the microcrystalline glass is 0.2 to 1 mm, preferably 0.3 to 0.9 mm, more preferably 0.5 to 0.8 mm, still more preferably 0.55 mm or 0.6 mm or 0.68 mm or 0.72 mm or 0.75 mm, and the microcrystalline glass according to any one of (64) to (67).

[0078] (69) The microcrystalline glass contains a colorant, and the microcrystalline glass according to any one of (41) to (47).

[0079] (70) The microcrystalline glass according to (69), wherein the coloring agent contains the following components by weight: NiO: 0-4%, and / or Ni2O3: 0-4%, and / or CoO: 0-2%, and / or Co2O3: 0-2%, and / or Fe2O3: 0-7%, and / or MnO2: 0-4%, and / or Er2O3: 0-8%, and / or Nd2O3: 0-8%, and / or Cu2O: 0-4%, and / or Pr2O3: 0-8%, and / or CeO2: 0-4%.

[0080] (71) Microcrystalline glass according to either (69) or (70), wherein the coloring agent contains, by weight %, the following components: NiO: 0.1-4%, and / or Ni2O3: 0.1-4%, and / or CoO: 0.05-2%, and / or Co2O3: 0.05-2%, and / or Fe2O3: 0.2-7%, and / or MnO2: 0.1-4%, and / or Er2O3: 0.4-8%, and / or Nd2O3: 0.4-8%, and / or Cu2O: 0.5-4%, and / or Pr2O3: 0.4-8%, and / or CeO2: 0.5-4%.

[0081] (72) Microcrystalline glass according to either (69) or (70), wherein the coloring agent contains, by weight %, the following components: NiO: 0.1-3%, and / or Ni2O3: 0.1-3%, and / or CoO: 0.05-1.8%, and / or Co2O3: 0.05-1.8%, and / or Fe2O3: 0.2-5%, and / or MnO2: 0.1-3%, and / or Er2O3: 0.4-6%, and / or Nd2O3: 0.4-6%, and / or Cu2O: 0.5-3%, and / or Pr2O3: 0.4-6%, and / or CeO2: 0.5-3%.

[0082] (73) Microcrystalline glass according to either (69) or (70), wherein the coloring agent contains, by weight, the following components: NiO: 0.1-3%, and / or Ni2O3: 0.1-3%.

[0083] (74) The microcrystalline glass according to either (69) or (70), wherein the coloring agent contains, by weight %, the following components: CoO: 0.05-1.8%, and / or Co2O3: 0.05-1.8%.

[0084] (75) Microcrystalline glass according to either (69) or (70), wherein the coloring agent contains, by weight, the following components: Cu2O: 0.5-3%, and / or CeO2: 0.5-3%.

[0085] (76) Microcrystalline glass according to either (69) or (70), wherein the coloring agent contains the following components by weight: Fe2O3: 0.2-5%, CoO: 0.05-0.3%, or Fe2O3: 0.2-5%, Co2O3: 0.05-0.3%, or Fe2O3: 0.2-5%, CoO: 0.05-0.3%, NiO: 0.1-1%, or Fe2O3: 0.2-5%, Co2O3: 0.05-0.3%, NiO: 0.1-1%.

[0086] (77) The coloring agent comprises, by weight %, the following components: microcrystalline glass according to either (69) or (70): Pr2O3: 0.4-6%, Fe2O3: 0.2-5%, MnO2: 0.1-3%, Er2O3: 0.4-6%, or Nd2O3: 0.4-6%.

[0087] (78) Microcrystalline glass according to either (69) or (70), wherein the coloring agent contains, by weight, the following components: Er2O3: 0.4-6%, Nd2O3: 0.4-4%, MnO2: 0.1-2%.

[0088] The present invention also provides a matrix glass.

[0089] The technical solution employed by this invention to solve the technical problems is as follows:

[0090] (79) Matrix glass containing the following components by weight: SiO2: 45-70%, Al2O3: 8-18%, Li2O: 10-25%, ZrO2: 5-15%, P2O5: 2-10%, Y2O3: greater than 0% and less than 8%.

[0091] (80) The matrix glass according to (79), further comprising the following components by weight: K2O: 0-5%, and / or MgO: 0-2%, and / or ZnO: 0-2%, and / or Na2O: 0-6%, and / or SrO: 0-5%, and / or BaO: 0-5%, and / or CaO: 0-5%, and / or TiO2: 0-5%, and / or B2O3: 0-5%, and / or Ln2O3: 0-5%, and / or clarifying agent: 0-2%, wherein Ln2O3 is one or more of La2O3, Gd2O3, and Yb2O3, and the clarifying agent is one or more of Sb2O3, SnO2, SnO, CeO2, F, Cl, and Br.

[0092] (81) A matrix glass consisting of the following components by weight %, comprising: SiO2: 45-70%, Al2O3: 8-18%, Li2O: 10-25%, ZrO2: 5-15%, P2O5: 2-10%, Y2O3: greater than 0% and less than or equal to 8%, K2O: 0-5%, MgO: 0-2%, ZnO: 0-2%, Na2O: 0-6%, SrO: 0-5%, BaO: 0-5%, CaO: 0-5%, TiO2: 0-5%, B2O3: 0-5%, Ln2O3: 0-5%, and a clarifying agent: 0-2%, wherein Ln2O3 is one or more of La2O3, Gd2O3, and Yb2O3, and the clarifying agent is one or more of Sb2O3, SnO2, SnO, CeO2, F, Cl, and Br.

[0093] (82) A matrix glass described in any one of (79) to (81), wherein the components are expressed in weight percent and the content of each component satisfies one or more of the following five conditions: 1) The ratio of Y2O3 / ZrO2 is greater than 0. 2) (Li2O+ZrO2+P2O5) / Y2O3 is 2.5~50.0; 3) Al2O3 / (Li2O+ZrO2+P2O5) is 0.16~0.9; 4) The Na2O / Y2O3 ratio is 6.0 or less; 5) The ratio of Y2O3 / (Al2O3+SiO2) is greater than 0 and less than or equal to 0.15. (83) A matrix glass according to any one of (79) to (82) containing the following components by weight %,: SiO2: 50-65%, and / or Al2O3: 8-15%, and / or Li2O: 13-22%, and / or ZrO2: 6-12%, and / or P2O5: 3.5-9%, and / or K2O: 0-4%, and / or MgO: 0-1%, and / or ZnO: 0-1%, and / or Na2O: 1-5%, and / or Y2O3: 1-7%, and / or SrO: 0-3%, and / or The mixture consists of TiO2: 0-3%, and / or BaO: 0-3%, and / or CaO: 0-3%, and / or B2O3: 0-3%, and / or Ln2O3: 0-4%, and / or clarifying agent: 0-1%, where Ln2O3 is one or more of La2O3, Gd2O3, and Yb2O3, and the clarifying agent is one or more of Sb2O3, SnO2, SnO, CeO2, F, Cl, and Br.

[0094] (84) A matrix glass described in any one of (79) to (83), wherein the components are expressed in weight percent and the content of each component satisfies one or more of the following five conditions: 1) Y2O3 / ZrO2 is between 0.1 and 1.0; 2) (Li2O+ZrO2+P2O5) / Y2O3 is 3.0~40.0; 3) Al2O3 / (Li2O+ZrO2+P2O5) is 0.18~0.6; 4) The Na2O / Y2O3 ratio is 0.1-5.0; 5) The ratio of Y2O3 / (Al2O3+SiO2) is 0.01 to 0.12.

[0095] (85) A matrix glass according to any one of (79) to (84) containing, by weight %, the following components: SiO2: 53-63%, and / or Al2O3: 8-12%, and / or Li2O: 14-21%, and / or ZrO2: 7-12%, and / or P2O5: 4-8%, and / or K2O: 0-2%, and / or Y2O3: 2-6%, and / or B2O3: 0-2%, and / or Na2O: 1.5-4%, and / or SrO: 0-1%, and / or The mixture consists of TiO2: 0-1%, and / or BaO: 0-1%, and / or CaO: 0-1%, and / or Ln2O3: 0-3%, and / or clarifying agent: 0-0.5%, where Ln2O3 is one or more of La2O3, Gd2O3, and Yb2O3, and the clarifying agent is one or more of Sb2O3, SnO2, SnO, CeO2, F, Cl, and Br.

[0096] (86) A matrix glass described in any one of (79) to (85), wherein the components are expressed in weight percent and the content of each component satisfies one or more of the following five conditions: 1) Y2O3 / ZrO2 is 0.2~0.6; 2) (Li2O+ZrO2+P2O5) / Y2O3 is between 4.0 and 21.0; 3) Al2O3 / (Li2O+ZrO2+P2O5) is 0.19~0.5; 4) The Na2O / Y2O3 ratio is 0.3-2.0; 5) The ratio of Y2O3 / (Al2O3+SiO2) is 0.03 to 0.09.

[0097] (87) A matrix glass according to any one of (79) to (86), wherein the component does not contain SrO, and / or BaO, and / or CaO, and / or ZnO, and / or PbO, and / or As2O3, and / or TiO2, and / or B2O3, and / or Ln2O3, and / or F, and / or Ta2O5.

[0098] (88) The thermal expansion coefficient of the matrix glass is 50 × 10 -7 / K~70×10 -7 A matrix glass that is / K, as described in any one of (79) to (87).

[0099] (89) The matrix glass according to any one of (79) to (88), wherein the refractive index of the matrix glass is 1.5600 to 1.5700.

[0100] (90) The matrix glass according to any one of (79) to (80), wherein the matrix glass contains a coloring agent.

[0101] (91) The matrix glass according to (90), wherein the coloring agent comprises the following components by weight: NiO: 0-4%, and / or Ni2O3: 0-4%, and / or CoO: 0-2%, and / or Co2O3: 0-2%, and / or Fe2O3: 0-7%, and / or MnO2: 0-4%, and / or Er2O3: 0-8%, and / or Nd2O3: 0-8%, and / or Cu2O: 0-4%, and / or Pr2O3: 0-8%, and / or CeO2: 0-4%.

[0102] (92) The matrix glass according to (90) or (91), wherein the coloring agent contains the following components by weight: NiO: 0.1-4%, and / or Ni2O3: 0.1-4%, and / or CoO: 0.05-2%, and / or Co2O3: 0.05-2%, and / or Fe2O3: 0.2-7%, and / or MnO2: 0.1-4%, and / or Er2O3: 0.4-8%, and / or Nd2O3: 0.4-8%, and / or Cu2O: 0.5-4%, and / or Pr2O3: 0.4-8%, and / or CeO2: 0.5-4%.

[0103] (93) The matrix glass according to (90) or (91), wherein the coloring agent contains, by weight %, the following components: NiO: 0.1-3%, and / or Ni2O3: 0.1-3%, and / or CoO: 0.05-1.8%, and / or Co2O3: 0.05-1.8%, and / or Fe2O3: 0.2-5%, and / or MnO2: 0.1-3%, and / or Er2O3: 0.4-6%, and / or Nd2O3: 0.4-6%, and / or Cu2O: 0.5-3%, and / or Pr2O3: 0.4-6%, and / or CeO2: 0.5-3%.

[0104] (94) The matrix glass according to (90) or (91), wherein the coloring agent contains the following components by weight: NiO: 0.1-3%, and / or Ni2O3: 0.1-3%.

[0105] (95) The matrix glass according to (90) or (91), wherein the coloring agent contains, by weight %, the following components: CoO: 0.05-1.8%, and / or Co2O3: 0.05-1.8%.

[0106] (96) The matrix glass according to (90) or (91), wherein the coloring agent comprises the following components by weight: Cu2O: 0.5-3%, and / or CeO2: 0.5-3%.

[0107] (97) The matrix glass according to (90) or (91), wherein the coloring agent contains the following components by weight: Fe2O3: 0.2-5%, CoO: 0.05-0.3%, or Fe2O3: 0.2-5%, Co2O3: 0.05-0.3%, or Fe2O3: 0.2-5%, CoO: 0.05-0.3%, NiO: 0.1-1%, or Fe2O3: 0.2-5%, Co2O3: 0.05-0.3%, NiO: 0.1-1%.

[0108] (98) The matrix glass according to (90) or (91), wherein the coloring agent contains, by weight, the following components: Pr2O3: 0.4-6%, or Fe2O3: 0.2-5%, or MnO2: 0.1-3%, or Er2O3: 0.4-6%, or Nd2O3: 0.4-6%.

[0109] (99) The matrix glass according to (90) or (91), wherein the coloring agent contains the following components by weight: Er2O3: 0.4-6%, Nd2O3: 0.4-4%, MnO2: 0.1-2%.

[0110] The present invention also provides a glass lid plate.

[0111] (100) A glass lid plate comprising a microcrystalline glass product as described in any one of (1) to (40), and / or a microcrystalline glass as described in any one of (41) to (78), and / or a matrix glass as described in any one of (79) to (99).

[0112] The present invention also provides a glass element.

[0113] (101) A glass element comprising a microcrystalline glass product as described in any one of (1) to (40), and / or a microcrystalline glass as described in any one of (41) to (78), and / or a matrix glass as described in any one of (79) to (99).

[0114] The present invention also provides a display device.

[0115] (102) A display device comprising a microcrystalline glass product as described in any one of (1) to (40), and / or a microcrystalline glass as described in any one of (41) to (78), and / or a matrix glass as described in any one of (79) to (99), and / or a glass cover plate as described in (100), and / or a glass element as described in (101).

[0116] The present invention also provides electronic equipment.

[0117] (103) Electronic device comprising a microcrystalline glass product as described in any one of (1) to (40), and / or a microcrystalline glass as described in any one of (41) to (78), and / or a matrix glass as described in any one of (79) to (99), and / or a glass cover plate as described in (100), and / or a glass element as described in (101).

[0118] The present invention also provides a method for manufacturing microcrystalline glass products.

[0119] (104) A method for manufacturing a microcrystalline glass product, the method comprising the following steps: A matrix glass is formed, and the matrix glass contains the following components by weight: SiO2: 45-70%, Al2O3: 8-18%, Li2O: 10-25%, ZrO2: 5-15%, P2O5: 2-10%, Y2O3: greater than 0% and 8% or less. Microcrystalline glass is formed on the matrix glass by a crystallization process, and then a microcrystalline glass product is formed on the microcrystalline glass by a chemical strengthening process.

[0120] (105) A method for producing a microcrystalline glass product as described in (104), wherein the matrix glass further comprises, by weight %, the following components: K2O: 0-5%, and / or MgO: 0-2%, and / or ZnO: 0-2%, and / or Na2O: 0-6%, and / or SrO: 0-5%, and / or TiO2: 0-5%, and / or BaO: 0-5%, and / or CaO: 0-5%, and / or B2O3: 0-5%, and / or Ln2O3: 0-5%, and / or clarifying agent: 0-2%, wherein the Ln2O3 is one or more of La2O3, Gd2O3, and Yb2O3, and the clarifying agent is one or more of Sb2O3, SnO2, SnO, CeO2, F, Cl, and Br.

[0121] (106) A method for manufacturing a microcrystalline glass product, the method comprising the following steps: A matrix glass is formed, and the matrix glass consists of the following components by weight %, SiO2: 45-70%, Al2O3: 8-18%, Li2O: 10-25%, ZrO2: 5-15%, P2O5: 2-10%, Y2O3: greater than 0% and less than or equal to 8%, K2O: 0-5%, MgO: 0-2%, ZnO: 0-2%, Na2O: 0-6%, SrO: 0-5%, TiO2: 0-5%, BaO: 0-5%, CaO: 0-5%, B2O3: 0-5%, Ln2O3: 0-5%, and clarifying agent: 0-2%, wherein Ln2O3 is one or more of La2O3, Gd2O3, and Yb2O3, and the clarifying agent is one or more of Sb2O3, SnO2, SnO, CeO2, F, Cl, and Br. Microcrystalline glass is formed on the matrix glass by a crystallization process, and then a microcrystalline glass product is formed on the microcrystalline glass by a chemical strengthening process.

[0122] A method for manufacturing a microcrystalline glass product as described in any one of (104) to (106), wherein the components of the matrix glass are expressed in weight percent, and the content of each component satisfies one or more of the following five conditions: 1) The ratio of Y2O3 / ZrO2 is greater than 0. 2) (Li2O+ZrO2+P2O5) / Y2O3 is 2.5~50.0; 3) Al2O3 / (Li2O+ZrO2+P2O5) is 0.16~0.9; 4) The Na2O / Y2O3 ratio is 6.0 or less; 5) The ratio of Y2O3 / (Al2O3+SiO2) is greater than 0 and less than or equal to 0.15.

[0123] A method for producing a microcrystalline glass product according to any one of (104) to (107), wherein the matrix glass contains the following components by weight %, SiO2: 50-65%, and / or Al2O3: 8-15%, and / or Li2O: 13-22%, and / or ZrO2: 6-12%, and / or P2O5: 3.5-9%, and / or K2O: 0-4%, and / or MgO: 0-1%, and / or ZnO: 0-1%, and / or Na2O: 1-5%, and / or Y2O3: 1-7%, and / or SrO: 0-3%, and / or The mixture consists of TiO2: 0-3%, and / or BaO: 0-3%, and / or CaO: 0-3%, and / or B2O3: 0-3%, and / or Ln2O3: 0-4%, and / or clarifying agent: 0-1%, where Ln2O3 is one or more of La2O3, Gd2O3, and Yb2O3, and the clarifying agent is one or more of Sb2O3, SnO2, SnO, CeO2, F, Cl, and Br.

[0124] A method for manufacturing a microcrystalline glass product as described in any one of (109) (104) to (108), wherein the components of the matrix glass are expressed in weight percent, and the content of each component satisfies one or more of the following five conditions: 1) Y2O3 / ZrO2 is between 0.1 and 1.0; 2) (Li2O+ZrO2+P2O5) / Y2O3 is 3.0~40.0; 3) Al2O3 / (Li2O+ZrO2+P2O5) is 0.18~0.6; 4) The Na2O / Y2O3 ratio is 0.1-5.0; 5) The ratio of Y2O3 / (Al2O3+SiO2) is 0.01 to 0.12.

[0125] A method for producing a microcrystalline glass product according to any one of (110) (104) to (109), wherein the matrix glass contains the following components by weight %: SiO2: 53-63%, and / or Al2O3: 8-12%, and / or Li2O: 14-21%, and / or ZrO2: 7-12%, and / or P2O5: 4-8%, and / or K2O: 0-2%, and / or Y2O3: 2-6%, and / or B2O3: 0-2%, and / or Na2O: 1.5-4%, and / or SrO: 0-1%, and / or The mixture consists of TiO2: 0-1%, and / or BaO: 0-1%, and / or CaO: 0-1%, and / or Ln2O3: 0-3%, and / or clarifying agent: 0-0.5%, where Ln2O3 is one or more of La2O3, Gd2O3, and Yb2O3, and the clarifying agent is one or more of Sb2O3, SnO2, SnO, CeO2, F, Cl, and Br.

[0126] A method for manufacturing a microcrystalline glass product as described in any one of (111) (104) to (110), wherein the components of the matrix glass are expressed in weight percent, and the content of each component satisfies one or more of the following five conditions: 1) Y2O3 / ZrO2 is 0.2~0.6; 2) (Li2O+ZrO2+P2O5) / Y2O3 is between 4.0 and 21.0; 3) Al2O3 / (Li2O+ZrO2+P2O5) is 0.19~0.5; 4) The Na2O / Y2O3 ratio is 0.3-2.0; 5) The ratio of Y2O3 / (Al2O3+SiO2) is 0.03 to 0.09.

[0127] A method for producing a microcrystalline glass product according to any one of (112) (104) to (111), wherein the matrix glass components do not contain SrO, and / or BaO, and / or CaO, and / or ZnO, and / or PbO, and / or As2O3, and / or TiO2, and / or B2O3, and / or Ln2O3, and / or F, and / or Ta2O5.

[0128] (113) A method for producing microcrystalline glass according to any one of (104) to (105), wherein the matrix glass contains a coloring agent.

[0129] (114) A method for producing microcrystalline glass according to (113), wherein the coloring agent contains the following components by weight: NiO: 0-4%, and / or Ni2O3: 0-4%, and / or CoO: 0-2%, and / or Co2O3: 0-2%, and / or Fe2O3: 0-7%, and / or MnO2: 0-4%, and / or Er2O3: 0-8%, and / or Nd2O3: 0-8%, and / or Cu2O: 0-4%, and / or Pr2O3: 0-8%, and / or CeO2: 0-4%.

[0130] (115) A method for producing microcrystalline glass according to either (113) or (114), wherein the coloring agent contains the following components by weight: NiO: 0.1-4%, and / or Ni2O3: 0.1-4%, and / or CoO: 0.05-2%, and / or Co2O3: 0.05-2%, and / or Fe2O3: 0.2-7%, and / or MnO2: 0.1-4%, and / or Er2O3: 0.4-8%, and / or Nd2O3: 0.4-8%, and / or Cu2O: 0.5-4%, and / or Pr2O3: 0.4-8%, and / or CeO2: 0.5-4%.

[0131] (116) A method for producing microcrystalline glass according to either (113) or (114), wherein the coloring agent contains the following components by weight: NiO: 0.1-3%, and / or Ni2O3: 0.1-3%, and / or CoO: 0.05-1.8%, and / or Co2O3: 0.05-1.8%, and / or Fe2O3: 0.2-5%, and / or MnO2: 0.1-3%, and / or Er2O3: 0.4-6%, and / or Nd2O3: 0.4-6%, and / or Cu2O: 0.5-3%, and / or Pr2O3: 0.4-6%, and / or CeO2: 0.5-3%.

[0132] (117) A method for producing microcrystalline glass according to either (113) or (114), wherein the coloring agent contains the following components by weight: NiO: 0.1-3%, and / or Ni2O3: 0.1-3%.

[0133] (118) A method for producing microcrystalline glass according to either (113) or (114), wherein the coloring agent contains the following components by weight: CoO: 0.05 to 1.8%, and / or Co2O3: 0.05 to 1.8%.

[0134] (119) A method for producing microcrystalline glass according to either (113) or (114), wherein the coloring agent contains the following components by weight: Cu2O: 0.5-3%, and / or CeO2: 0.5-3%.

[0135] (120) A method for producing microcrystalline glass according to either (113) or (114), wherein the coloring agent contains the following components by weight: Fe2O3: 0.2-5%, CoO: 0.05-0.3%, or Fe2O3: 0.2-5%, Co2O3: 0.05-0.3%, or Fe2O3: 0.2-5%, CoO: 0.05-0.3%, NiO: 0.1-1%, or Fe2O3: 0.2-5%, Co2O3: 0.05-0.3%, NiO: 0.1-1%.

[0136] (121) A method for producing microcrystalline glass according to either (113) or (114), wherein the coloring agent contains the following components by weight: Pr2O3: 0.4-6%, or Fe2O3: 0.2-5%, or MnO2: 0.1-3%, or Er2O3: 0.4-6%, or Nd2O3: 0.4-6%.

[0137] (122) A method for producing microcrystalline glass according to either (113) or (114), wherein the coloring agent contains the following components by weight: Er2O3: 0.4-6%, Nd2O3: 0.4-4%, MnO2: 0.1-2%.

[0138] A method for manufacturing a microcrystalline glass product according to any one of (104) to (122), wherein the crystallization step includes the following steps: raising the temperature to a predetermined crystallization treatment temperature, maintaining the temperature for a certain period of time after reaching the crystallization treatment temperature, and then lowering the temperature. The crystallization treatment temperature is 600 to 750°C, preferably 650 to 700°C, and the holding time at the crystallization treatment temperature is 0 to 8 hours, preferably 1 to 6 hours.

[0139] (124) A method for manufacturing a microcrystalline glass product according to any one of (104) to (122), wherein the crystallization step includes the following steps: performing a nucleation step at a first temperature, and then performing a crystal growth step at a second temperature higher than the temperature of the nucleation step.

[0140] (125) A method for producing a microcrystalline glass product as described in (124), wherein the crystallization step includes the following steps: a first temperature of 470 to 630°C, a second temperature of 650 to 750°C, a holding time at the first temperature of 0 to 24 hours, preferably 2 to 15 hours, and a holding time at the second temperature of 0 to 10 hours, preferably 0.5 to 6 hours.

[0141] A method for producing a microcrystalline glass product according to any one of (104) to (125), wherein the chemical strengthening step includes the following steps: immersing the microcrystalline glass in a salt bath containing molten Na salt at a temperature of 430°C to 470°C for 6 to 20 hours, preferably in a temperature range of 435°C to 460°C and a time range of 8 to 13 hours, and / or immersing the microcrystalline glass in a salt bath containing molten K salt at a temperature of 400°C to 450°C for 1 to 8 hours, preferably in a time range of 2 to 4 hours.

[0142] (127) A method for producing a microcrystalline glass product according to any one of (104) to (126), wherein the crystalline phase of the microcrystalline glass product contains lithium monosilicate and / or lithium phosphate.

[0143] (128) A method for manufacturing a microcrystalline glass product according to any one of (104) to (127), wherein the crystalline phase of the microcrystalline glass product mainly contains lithium monosilicate, the weight percentage of lithium monosilicate is higher than that of other crystalline phases, and lithium monosilicate accounts for 10% to 63.5%, preferably 15% to 55%, of the microcrystalline glass product.

[0144] (129) A method for producing a microcrystalline glass product according to any one of (104) to (128), wherein the microcrystalline glass product contains a lithium phosphate crystalline phase, and the weight percentage of the lithium phosphate crystalline phase in the microcrystalline glass product is 3 to 15%, preferably 5 to 12%.

[0145] A method for manufacturing a microcrystalline glass product as described in any one of (130) (104) to (112), wherein the surface stress of the microcrystalline glass product is 600 MPa or more, preferably 650 MPa or more, and more preferably 700 MPa or more.

[0146] A method for manufacturing a microcrystalline glass product as described in any one of (131) (104) to (112), wherein the four-point bending strength of the microcrystalline glass product is 600 MPa or more, preferably 650 MPa or more, and more preferably 700 MPa or more.

[0147] (132) A method for producing a microcrystalline glass product according to any one of (104) to (112), wherein the ion exchange layer depth of the microcrystalline glass product is 20 μm or more, preferably 30 μm or more, and more preferably 40 μm or more.

[0148] A method for manufacturing a microcrystalline glass product as described in any one of (133) (104) to (112), wherein the height of the ball drop test of the microcrystalline glass product is 1300 mm or more, preferably 1400 mm or more, and more preferably 1500 mm or more.

[0149] A method for manufacturing a microcrystalline glass product as described in any one of (134) (104) to (112), wherein the fracture toughness of the microcrystalline glass product is 1 MPa·m 1 / 2Preferably, the above is 1.1 MPa·m 1 / 2 The above is a comfortable 1.2 MPa·m 1 / 2 That's all.

[0150] (135) A method for manufacturing a microcrystalline glass product as described in any one of (104) to (112), wherein the Vickers hardness of the microcrystalline glass product is 700 kgf / mm 2 Preferably 720 kgf / mm² 2 More preferably 730 kgf / mm 2 That's all.

[0151] (136) A method for producing a microcrystalline glass product according to any one of (104) to (112), wherein the crystallinity of the microcrystalline glass product is 50% or more, preferably 60% or more, and more preferably 70% or more.

[0152] A method for manufacturing a microcrystalline glass product according to any one of (137) (104) to (112), wherein the crystal grain size of the microcrystalline glass product is 50 nm or less, preferably 40 nm or less, and more preferably 30 nm or less.

[0153] (138) A method for manufacturing a microcrystalline glass product as described in any one of (104) to (112), wherein the cloudiness of the microcrystalline glass product with a thickness of 1 mm or less is 0.15% or less, preferably 0.12% or less, and more preferably 0.1% or less.

[0154] (139) A method for manufacturing a microcrystalline glass product as described in any one of (104) to (112), wherein the average transmittance of the microcrystalline glass product with a thickness of 1 mm or less at wavelengths of 400 to 800 nm is 89% or more.

[0155] (140) A method for manufacturing a microcrystalline glass product as described in any one of (104) to (112), wherein the microcrystalline glass product with a thickness of 1 mm or less has a transmittance of 91% or more at a wavelength of 550 nm.

[0156] A method for manufacturing a microcrystalline glass product as described in any one of (141) (104) to (112), wherein the average optics |B| value of the microcrystalline glass product with a thickness of 1 mm or less at 400 to 800 nm is 0.6 or less, preferably 0.55 or less, and more preferably 0.5 or less.

[0157] A method for manufacturing a microcrystalline glass product as described in any one of (138) to (141), wherein the thickness of the microcrystalline glass product is 0.2 to 1 mm, preferably 0.3 to 0.9 mm, more preferably 0.5 to 0.8 mm, and even more preferably 0.55 mm, 0.6 mm, 0.68 mm, 0.72 mm, or 0.75 mm.

[0158] The present invention also provides a method for manufacturing microcrystalline glass.

[0159] (143) A method for producing microcrystalline glass, wherein the method comprises the following steps. A matrix glass is formed, and the matrix glass contains the following components by weight: SiO2: 45-70%, Al2O3: 8-18%, Li2O: 10-25%, ZrO2: 5-15%, P2O5: 2-10%, Y2O3: greater than 0% and 8% or less. The matrix glass is processed into microcrystalline glass through a crystallization process.

[0160] (144) A method for producing microcrystalline glass as described in (143), wherein the matrix glass further comprises, by weight %, the following components: K2O: 0-5%, and / or MgO: 0-2%, and / or ZnO: 0-2%, and / or Na2O: 0-6%, and / or SrO: 0-5%, and / or TiO2: 0-5%, and / or BaO: 0-5%, and / or CaO: 0-5%, and / or B2O3: 0-5%, and / or Ln2O3: 0-5%, and / or clarifying agent: 0-2%, wherein the Ln2O3 is one or more of La2O3, Gd2O3, and Yb2O3, and the clarifying agent is one or more of Sb2O3, SnO2, SnO, CeO2, F, Cl, and Br.

[0161] (145) A method for producing microcrystalline glass, the method comprising the following steps: A matrix glass is formed, and the matrix glass consists of the following components by weight %, SiO2: 45-70%, Al2O3: 8-18%, Li2O: 10-25%, ZrO2: 5-15%, P2O5: 2-10%, Y2O3: greater than 0% and less than or equal to 8%, K2O: 0-5%, MgO: 0-2%, ZnO: 0-2%, Na2O: 0-6%, SrO: 0-5%, TiO2: 0-5%, BaO: 0-5%, CaO: 0-5%, B2O3: 0-5%, Ln2O3: 0-5%, and clarifying agent: 0-2%, wherein Ln2O3 is one or more of La2O3, Gd2O3, and Yb2O3, and the clarifying agent is one or more of Sb2O3, SnO2, SnO, CeO2, F, Cl, and Br. The matrix glass is processed into microcrystalline glass through a crystallization process.

[0162] A method for producing microcrystalline glass as described in any one of (146) (143) to (145), wherein the components of the matrix glass are expressed in weight percent, and the content of each component satisfies one or more of the following five conditions: 1) The ratio of Y2O3 / ZrO2 is greater than 0. 2) (Li2O+ZrO2+P2O5) / Y2O3 is 2.5~50.0; 3) Al2O3 / (Li2O+ZrO2+P2O5) is 0.16~0.9; 4) The Na2O / Y2O3 ratio is 6.0 or less; 5) The ratio of Y2O3 / (Al2O3+SiO2) is greater than 0 and less than or equal to 0.15.

[0163] A method for producing microcrystalline glass according to any one of (147) (143) to (146), wherein the matrix glass contains the following components by weight %: SiO2: 50-65%, and / or Al2O3: 8-15%, and / or Li2O: 13-22%, and / or ZrO2: 6-12%, and / or P2O5: 3.5-9%, and / or K2O: 0-4%, and / or MgO: 0-1%, and / or ZnO: 0-1%, and / or Na2O: 1-5%, and / or Y2O3: 1-7%, and / or SrO: 0-3%, and / or The mixture consists of TiO2: 0-3%, and / or BaO: 0-3%, and / or CaO: 0-3%, and / or B2O3: 0-3%, and / or Ln2O3: 0-4%, and / or clarifying agent: 0-1%, where Ln2O3 is one or more of La2O3, Gd2O3, and Yb2O3, and the clarifying agent is one or more of Sb2O3, SnO2, SnO, CeO2, F, Cl, and Br.

[0164] A method for producing microcrystalline glass as described in any one of (148) (143) to (147), wherein the components of the matrix glass are expressed in weight percent, and the content of each component satisfies one or more of the following five conditions: 1) Y2O3 / ZrO2 is between 0.1 and 1.0; 2) (Li2O+ZrO2+P2O5) / Y2O3 is 3.0~40.0; 3) Al2O3 / (Li2O+ZrO2+P2O5) is 0.18~0.6; 4) The Na2O / Y2O3 ratio is 0.1-5.0; 5) The ratio of Y2O3 / (Al2O3+SiO2) is 0.01 to 0.12.

[0165] A method for producing microcrystalline glass according to any one of (149) (143) to (148), wherein the matrix glass contains the following components by weight %, SiO2: 53-63%, and / or Al2O3: 8-12%, and / or Li2O: 14-21%, and / or ZrO2: 7-12%, and / or P2O5: 4-8%, and / or K2O: 0-2%, and / or Y2O3: 2-6%, and / or B2O3: 0-2%, and / or Na2O: 1.5-4%, and / or SrO: 0-1%, and / or The mixture consists of TiO2: 0-1%, and / or BaO: 0-1%, and / or CaO: 0-1%, and / or Ln2O3: 0-3%, and / or clarifying agent: 0-0.5%, where Ln2O3 is one or more of La2O3, Gd2O3, and Yb2O3, and the clarifying agent is one or more of Sb2O3, SnO2, SnO, CeO2, F, Cl, and Br.

[0166] A method for producing microcrystalline glass as described in any one of (150) (143) to (149), wherein the components of the matrix glass are expressed in weight percent, and the content of each component satisfies one or more of the following five conditions: 1) Y2O3 / ZrO2 is 0.2~0.6; 2) (Li2O+ZrO2+P2O5) / Y2O3 is between 4.0 and 21.0; 3) Al2O3 / (Li2O+ZrO2+P2O5) is 0.19~0.5; 4) The Na2O / Y2O3 ratio is 0.3-2.0; 5) The ratio of Y2O3 / (Al2O3+SiO2) is 0.03 to 0.09.

[0167] A method for producing microcrystalline glass as described in any one of (151) (143) to (150), wherein the matrix glass components do not contain SrO, and / or BaO, and / or CaO, and / or ZnO, and / or PbO, and / or As2O3, and / or TiO2, and / or B2O3, and / or Ln2O3, and / or F, and / or Ta2O5.

[0168] A method for producing microcrystalline glass according to any one of (152) (143) to (144), wherein the matrix glass contains a coloring agent.

[0169] (153) A method for producing microcrystalline glass as described in (152), wherein the coloring agent contains, by weight %, the following components: NiO: 0-4%, and / or Ni2O3: 0-4%, and / or CoO: 0-2%, and / or Co2O3: 0-2%, and / or Fe2O3: 0-7%, and / or MnO2: 0-4%, and / or Er2O3: 0-8%, and / or Nd2O3: 0-8%, and / or Cu2O: 0-4%, and / or Pr2O3: 0-8%, and / or CeO2: 0-4%.

[0170] (154) A method for producing microcrystalline glass according to either (152) or (153), wherein the coloring agent contains the following components by weight: NiO: 0.1-4%, and / or Ni2O3: 0.1-4%, and / or CoO: 0.05-2%, and / or Co2O3: 0.05-2%, and / or Fe2O3: 0.2-7%, and / or MnO2: 0.1-4%, and / or Er2O3: 0.4-8%, and / or Nd2O3: 0.4-8%, and / or Cu2O: 0.5-4%, and / or Pr2O3: 0.4-8%, and / or CeO2: 0.5-4%.

[0171] (155) A method for producing microcrystalline glass according to either (152) or (153), wherein the coloring agent contains the following components by weight: NiO: 0.1-3%, and / or Ni2O3: 0.1-3%, and / or CoO: 0.05-1.8%, and / or Co2O3: 0.05-1.8%, and / or Fe2O3: 0.2-5%, and / or MnO2: 0.1-3%, and / or Er2O3: 0.4-6%, and / or Nd2O3: 0.4-6%, and / or Cu2O: 0.5-3%, and / or Pr2O3: 0.4-6%, and / or CeO2: 0.5-3%.

[0172] A method for producing microcrystalline glass according to any one of (156), (152), or (153), wherein the coloring agent contains, by weight, the following components: NiO: 0.1-3%, and / or Ni2O3: 0.1-3%.

[0173] A method for producing microcrystalline glass according to any one of (157), (152), or (153), wherein the coloring agent contains, by weight %, the following components: CoO: 0.05 to 1.8%, and / or Co2O3: 0.05 to 1.8%.

[0174] A method for producing microcrystalline glass according to any one of (158), (152), or (153), wherein the coloring agent contains, by weight %, the following components: Cu2O: 0.5-3%, and / or CeO2: 0.5-3%.

[0175] A method for producing microcrystalline glass according to any one of (159), (152), or (153), wherein the coloring agent contains, by weight %, the following components: Fe2O3: 0.2-5%, CoO: 0.05-0.3%, or Fe2O3: 0.2-5%, Co2O3: 0.05-0.3%, or Fe2O3: 0.2-5%, CoO: 0.05-0.3%, NiO: 0.1-1%, or Fe2O3: 0.2-5%, Co2O3: 0.05-0.3%, NiO: 0.1-1%.

[0176] A method for producing microcrystalline glass according to any one of (160), (152), or (153), wherein the coloring agent contains, by weight %, the following components: Pr2O3: 0.4-6%, or Fe2O3: 0.2-5%, or MnO2: 0.1-3%, or Er2O3: 0.4-6%, or Nd2O3: 0.4-6%.

[0177] A method for producing microcrystalline glass according to any one of (161), (152), or (153), wherein the coloring agent contains the following components by weight: Er2O3: 0.4-6%, Nd2O3: 0.4-4%, MnO2: 0.1-2%.

[0178] A method for producing microcrystalline glass according to any one of (143) to (161), wherein the crystallization step includes the following steps: raising the temperature to a predetermined crystallization temperature, maintaining the temperature for a certain period of time after reaching the crystallization temperature, and then lowering the temperature. The crystallization temperature is 600 to 750°C, preferably 650 to 700°C, and the holding time at the crystallization temperature is 0 to 8 hours, preferably 1 to 6 hours.

[0179] A method for producing microcrystalline glass according to any one of (143) to (161), wherein the crystallization step includes the following steps: performing a nucleation step at a first temperature, and then performing a crystal growth step at a second temperature higher than the temperature of the nucleation step.

[0180] A method for producing microcrystalline glass as described in (164) and (163), wherein the crystallization step includes the following steps: a first temperature of 470 to 630°C, a second temperature of 650 to 750°C, a holding time at the first temperature of 0 to 24 hours, preferably 2 to 15 hours, and a holding time at the second temperature of 0 to 10 hours, preferably 0.5 to 6 hours.

[0181] A method for producing microcrystalline glass according to any one of (143) to (164), wherein the crystalline phase of the microcrystalline glass comprises lithium monosilicate and / or lithium phosphate.

[0182] A method for producing microcrystalline glass as described in any one of (143) to (165), wherein the crystalline phase of the microcrystalline glass mainly contains lithium monosilicate, the weight percentage of lithium monosilicate is higher than that of other crystalline phases, and lithium monosilicate accounts for 10% to 63.5%, preferably 15% to 55%, of the microcrystalline glass product.

[0183] A method for producing microcrystalline glass according to any one of (143) to (166), wherein the microcrystalline glass contains a lithium phosphate crystalline phase, and the weight percentage of the lithium phosphate crystalline phase in the microcrystalline glass is 3 to 15%, preferably 5 to 12%.

[0184] A method for producing microcrystalline glass as described in any one of (168) (143) to (151), wherein the crystallinity of the microcrystalline glass is 50% or more, preferably 60% or more, and more preferably 70% or more.

[0185] A method for producing microcrystalline glass according to any one of (169) (143) to (151), wherein the crystal grain size of the microcrystalline glass is 50 nm or less, preferably 40 nm or less, more preferably 30 nm or less, and / or the coefficient of thermal expansion is 75 to 95 × 10 -7 It is / K.

[0186] A method for manufacturing microcrystalline glass as described in any one of (170) (143) to (151), wherein the refractive index of the microcrystalline glass is 1.5700 to 1.5800.

[0187] A method for manufacturing microcrystalline glass as described in any one of (171) (143) to (151), wherein the height of the falling ball of the microcrystalline glass body is 1000 mm or more, preferably 1100 mm or more, and more preferably 1200 mm or more.

[0188] A method for manufacturing microcrystalline glass as described in any one of (172) (143) to (151), wherein the Vickers hardness of the microcrystalline glass is 650 kgf / mm². 2 Preferably 680 kgf / mm² 2 More than 700 kgf / mm 2 That's all.

[0189] A method for producing microcrystalline glass as described in any one of (143) to (151), wherein the cloudiness of the microcrystalline glass with a thickness of 1 mm or less is 0.15% or less, preferably 0.12% or less, and more preferably 0.1% or less.

[0190] A method for manufacturing microcrystalline glass as described in any one of (174) (143) to (151), wherein the average transmittance of the microcrystalline glass with a thickness of 1 mm or less at wavelengths of 400 to 800 nm is 89% or more.

[0191] (175) A method for manufacturing microcrystalline glass as described in any one of (143) to (151), wherein the transmittance at a wavelength of 550 nm of microcrystalline glass with a thickness of 1 mm or less is 91% or more.

[0192] A method for producing microcrystalline glass as described in any one of (176) (143) to (151), wherein the average optics |B| value of the microcrystalline glass with a thickness of 1 mm or less at 400 to 800 nm is 0.6 or less, preferably 0.55 or less, and more preferably 0.5 or less.

[0193] A method for manufacturing microcrystalline glass as described in any one of (177) (173) to (176), wherein the thickness of the microcrystalline glass is 0.2 to 1 mm, preferably 0.3 to 0.9 mm, more preferably 0.5 to 0.8 mm, and even more preferably 0.55 mm, 0.6 mm, 0.68 mm, 0.72 mm, or 0.75 mm. [Effects of the Invention]

[0194] The beneficial effects of the present invention are as follows: Due to its rational compositional design, the microcrystalline glass and microcrystalline glass products obtained by the present invention possess excellent mechanical and optical properties, making them suitable for electronic devices and display devices. [Modes for carrying out the invention]

[0195] The microcrystalline glass and microcrystalline glass products of the present invention are materials having crystalline and glass phases different from amorphous solids. The crystalline phase of the microcrystalline glass and microcrystalline glass products can be identified by the peak angle appearing in the X-ray diffraction pattern of X-ray diffraction analysis and / or measured by TEMEDX.

[0196] As a result of repeated testing and research by the inventors, they have obtained the microcrystalline glass or microcrystalline glass product of the present invention at a lower cost by specifying the content and ratio of specific components constituting microcrystalline glass and microcrystalline glass products to specific values ​​and thereby precipitating a specific crystalline phase.

[0197] The following describes the range of components (components) of the matrix glass, microcrystalline glass, and microcrystalline glass products of the present invention. In this specification, unless otherwise specified, the content of each component shall be expressed as a weight percentage (wt%) of the matrix glass, microcrystalline glass, or microcrystalline glass product converted to an oxide composition. Here, "converted to an oxide composition" means that the total weight of oxide substances when oxides, complex salts, hydroxides, etc., used as raw materials for the composition of the matrix glass, microcrystalline glass, or microcrystalline glass product of the present invention decompose into oxides during melting is taken as 100%. In this specification, "glass" refers to matrix glass before microcrystallization, microcrystalline matrix glass refers to microcrystalline glass, and microcrystalline glass products refer to chemically strengthened microcrystalline glass.

[0198] Specifically, the numerical ranges described herein include upper and lower limits, and “greater than or equal to” and “less than or equal to” include endpoint values, as well as all integers and fractions included in the range, and are not limited to the specific values ​​described where the range is limited. The term “about” as used herein means that recipes, parameters and other quantities, and features are not, and do not need to be, precise and can be approximated and / or greater or less as needed, reflecting tolerances, conversion factors, measurement errors, etc. What is referred to herein as “and / or” is inclusive; for example, “A and / or B” means A only, B only, or both A and B.

[0199] In the microcrystalline glass and microcrystalline glass products of the present invention, the crystalline phase comprises lithium monosilicate and / or lithium phosphate.

[0200] In some embodiments of the present invention, the crystalline phase of the microcrystalline glass or microcrystalline glass product mainly consists of a lithium monosilicate crystalline phase, with a higher weight percentage of lithium monosilicate than other crystalline phases, and lithium monosilicate accounts for 10% to 63.5% of the microcrystalline glass or microcrystalline glass product, and in some embodiments, the weight percentage range is 15% to 55%.

[0201] In some embodiments of the present invention, the crystalline phase of the microcrystalline glass or microcrystalline glass product includes a lithium phosphate crystalline phase, and the weight percentage range of the lithium phosphate crystalline phase in the microcrystalline glass or microcrystalline glass product is 3 to 15%, and in some embodiments, the weight percentage range is 5 to 12%.

[0202] SiO2 is an essential component of the glass of the present invention and is one of the main components that form crystals after heat treatment. If the SiO2 content is 45% or less, crystal formation in the glass becomes difficult. Therefore, the lower limit of the SiO2 content is 45%, preferably 50%, and more preferably 53%. If the SiO2 content is 70% or more, it is unfavorable for glass molding and affects the haze and |B| value of microcrystalline glass and microcrystalline glass products. Therefore, the upper limit of the SiO2 content is 70%, preferably 65%, and more preferably 63%. In some embodiments, the SiO2 can be contained in amounts of about 45%, 46%, 47%, 48%, 49%, 50%, 51%, 52%, 53%, 54%, 55%, 56%, 57%, 58%, 59%, 60%, 61%, 62%, 63%, 64%, 65%, 66%, 67%, 68%, 69%, and 70%.

[0203] Al2O3, as a glass network structure, is advantageous for glass molding, lowers the microcrystallization temperature of glass, and is favorable for glass microcrystallization. Al2O3 is one of the components that form microcrystalline glass crystals, is advantageous for the chemical strengthening of microcrystalline glass, and can increase the ion exchange layer depth of microcrystalline glass products. However, if its content is less than 8%, the above effects are low, so the lower limit for the Al2O3 content is 8%. On the other hand, if the Al2O3 content exceeds 18%, it affects the size of the fragments after chemical strengthening of microcrystalline glass, so the upper limit for the Al2O3 content is 18%, preferably 15%, and more preferably 12%. In some embodiments, it may contain Al2O3 in amounts of approximately 8%, 8.5%, 9%, 9.5%, 10%, 10.5%, 11%, 11.5%, 12%, 12.5%, 13%, 13.5%, 14%, 14.5%, 15%, 15.5%, 16%, 16.5%, 17%, 17.5%, and 18%.

[0204] Li2O promotes the melting of glass and can lower the melting temperature. It is a major component in crystal formation and is also a component that mainly replaces sodium and potassium ions in chemical strengthening treatment. It can increase the surface stress of the microcrystalline glass product after chemical strengthening and improve the drop height of the microcrystalline glass product. However, if the content is less than 10%, the formation effect of the lithium monosilicate crystalline phase is poor, affecting the drop height and fragment size of the microcrystalline glass product. Therefore, the lower limit of the Li2O content is 10%, preferably 13%, and more preferably 14%. On the other hand, if the Li2O content is too high, the glass is more prone to phase separation during microcrystallization, affecting the transmittance of the microcrystalline glass and microcrystalline glass product. Therefore, the upper limit of the Li2O content is 25%, preferably 22%, and more preferably 21%. In some embodiments, it may contain approximately 10%, 10.5%, 11%, 11.5%, 12%, 12.5%, 13%, 13.5%, 14%, 14.5%, 15%, 15.5%, 16%, 16.5%, 17%, 17.5%, 18%, 18.5%, 19%, 19.5%, 20%, 20.5%, 21%, 21.5%, 22%, 22.5%, 23%, 23.5%, 24%, 24.5%, and 25% Li2O.

[0205] Na2O is an optional component that can lower the melting temperature of the glass and is advantageous for adjusting the chemical strengthening process of glass or microcrystalline glass. Therefore, the lower limit of the Na2O content in the present invention is preferably 1%, more preferably 1.5%. On the other hand, if the Na2O content in the glass is too high, it promotes phase separation of the glass and reduces the transmittance of the microcrystalline glass and microcrystalline glass products after microcrystallization. Therefore, the upper limit of the Na2O content is 6%, preferably 5%, and even more preferably 4%. In some embodiments, Na2O can be included in amounts of about 0%, greater than 0%, 0.1%, 0.5%, 1%, 1.5%, 2%, 2.5%, 3%, 3.5%, 4%, 4.5%, 5%, 5.5%, and 6%.

[0206] K2O is advantageous for glass molding and reduces the viscosity of the glass, but if the K2O content is too high, the chemical stability and hardness of the glass will decrease. Therefore, the upper limit of the K2O content is 5%, preferably 4%, and more preferably 2%. In some embodiments, the K2O content can be about 0%, greater than 0%, 0.1%, 0.5%, 1%, 1.5%, 2.0%, 2.5%, 3.0%, 3.5%, 4.0%, 4.5%, and 5.0%.

[0207] P2O5 forms crystal nuclei in the glass crystallization process, promoting crystal formation, increasing the crystallinity of microcrystalline glass or microcrystalline glass products, which is advantageous for chemical strengthening, and can increase the hardness, drop height, and flexural strength of microcrystalline glass products. Therefore, the lower limit of the P2O5 content is 2%, preferably 3.5%, and more preferably 4%. However, if the P2O5 content is too high, the phase separation of the glass and the chemical stability of the glass will decrease. Therefore, the upper limit of the P2O5 content is 10%, preferably 9%, and more preferably 8%. In some embodiments, P2O5 can be included in amounts of about 2.0%, 2.5%, 3.0%, 3.5%, 4.0%, 4.5%, 5.0%, 5.5%, 6.0%, 6.5%, 7.0%, 7.5%, 8.0%, 8.5%, 9.0%, 9.5%, and 10%.

[0208] ZrO2 and P2O5 can dissolve in each other, reducing the phase separation of P2O5 during glass molding, increasing the microcrystallization temperature of the glass during microcrystallization, ensuring the integrity of the lithium monosilicate crystalline phase in microcrystalline glass and microcrystalline glass products, reducing the cloudiness and |B| value of microcrystalline glass and microcrystalline glass products, and improving the drop resistance of microcrystalline glass products. Therefore, the lower limit of the ZrO2 content is 5%, preferably 6%, and more preferably 7%. On the other hand, if the ZrO2 content is too high, it becomes difficult to melt the glass, so the upper limit of the ZrO2 content is 15%, preferably 12%. In some embodiments, it may contain approximately 5.0%, 5.5%, 6.0%, 6.5%, 7.0%, 7.5%, 8.0%, 8.5%, 9.0%, 9.5%, 10.0%, 10.5%, 11.0%, 11.5%, 12%, 12.5%, 13.0%, 13.5%, 14.0%, 14.5%, and 15.0% ZrO2.

[0209] Y2O3 promotes the melting of ZrO2, lowers the difficulty of melting the glass, reduces phase separation in the glass, and can lower the haze and |B| value of microcrystalline glass and microcrystalline glass products. Therefore, the lower limit of the Y2O3 content is greater than 0%, preferably 1%, and more preferably 2%. On the other hand, if the Y2O3 content is too high, crystal formation becomes difficult during glass microcrystallization, and the crystallinity of microcrystalline glass and microcrystalline glass products decreases. Therefore, the upper limit of the Y2O3 content is 8%, preferably 7%, and more preferably 6%. In some embodiments, Y2O3 can be included in amounts of about greater than 0%, 0.1%, 0.5%, 1.0%, 1.5%, 2.0%, 2.5%, 3.0%, 3.5%, 4.0%, 4.5%, 5.0%, 5.5%, 6.0%, 6.5%, 7.0%, 7.5%, and 8.0%.

[0210] As a result of extensive testing and research by the inventors, it was found that in some embodiments, the relative content of Y2O3 and ZrO2 has a significant effect on the degree of cloudiness and |B| value of microcrystalline glass and microcrystalline glass products. In particular, when Y2O3 / ZrO2 is greater than 0, the degree of cloudiness and |B| value of microcrystalline glass and microcrystalline glass products can be reduced, improving the shooting and photographic effect of terminal products. Therefore, preferably, Y2O3 / ZrO2 is greater than 0, more preferably Y2O3 / ZrO2 is 0.1 to 1.0, and even more preferably Y2O3 / ZrO2 is 0.2 to 0.6. In some embodiments, the value of Y2O3 / ZrO2 can be greater than 0, 0.05, 0.1, 0.15, 0.2, 0.25, 0.3, 0.35, 0.4, 0.45, 0.5, 0.55, 0.6, 0.65, 0.7, 0.75, 0.8, 0.85, 0.9, 0.95, or 1.0.

[0211] In some embodiments of the present invention, setting (Li2O+ZrO2+P2O5) / Y2O3 within the range of 2.5 to 50.0 refines the crystal grains of the matrix glass during the crystallization process, allowing for finer crystal grains in the microcrystalline glass and microcrystalline glass products, and reducing the degree of cloudiness in the microcrystalline glass and microcrystalline glass products. Therefore, preferably (Li2O+ZrO2+P2O5) / Y2O3 is 2.5 to 50.0, more preferably (Li2O+ZrO2+P2O5) / Y2O3 is 3.0 to 40.0, and even more preferably (Li2O+ZrO2+P2O5) / Y2O3 is 4.0 to 21.0. In some embodiments, the value of (Li2O+ZrO2+P2O5) / Y2O3 is 2.5, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0, 10.0, 11.0, 12.0, 13.0, 14.0, 15.0, 16.0, 17.0, 18.0, 19.0, 20.0, 21.0, 22.0, 23.0, 2 4.0, 25.0, 26.0, 27.0, 28.0, 29.0, 30.0, 31.0, 32.0, 33.0, 34.0, 35.0, 36.0, 37.0, 38.0, 39.0, 40.0, 41.0, 42.0, 43.0, 44.0, 45.0, 46.0, 47.0, 48.0, 49.0, 50.0 are possible.

[0212] As a result of extensive testing and research by the inventors, it has been found that by controlling the total content of Al2O3 and P2O5, and the ratio of Li2O + ZrO2 + P2O5, Al2O3 / (Li2O + ZrO2 + P2O5) to the range of 0.16 to 0.9, the microcrystalline glass product can withstand the impact of a falling ball of 1300 mm or more, and more preferably, Al2O3 / (Li2O + ZrO2 + P2O5) is controlled to the range of 0.18 to 0.6. Furthermore, in some embodiments, when Al2O3 / (Li2O + ZrO2 + P2O5) is controlled to the range of 0.19 to 0.5, a monolithic crystalline phase is easily formed, and the microcrystalline glass product can obtain excellent fracture toughness, with a fracture toughness of 1 MPa·m 1 / 2 Preferably, the above is 1.1 MPa·m 1 / 2 The above is a comfort level of 1.2 MPa·m. 1 / 2 That concludes the explanation. Furthermore, since the ability to withstand the height of the dropped ball test can be further optimized, it is even more preferable that the Al2O3 / (Li2O+ZrO2+P2O5) ratio is 0.19 to 0.5. In some embodiments, Al2O3 / (Li2O+ZrO2+P2O5) may be 0.16, 0.17, 0.18, 0.19, 0.2, 0.21, 0.22, 0.23, 0.24, 0.25, 0.26, 0.27, 0.28, 0.29, 0.30, 0.31, 0.32, 0.33, 0.34, 0.35, 0.36, 0.37, 0.38, 0.39, 0.40, 0.41, 0.42, 0.43, 0.44, 0.45, 0.46, 0.47, 0.48, 0.49, 0.50, 0.55, 0.60, 0.65, 0.70, 0.75, 0.80, 0.85, 0.90.

[0213] As a result of extensive testing and research by the present inventors, it has been found that the relative content of Na2O and Y2O3 has a significant effect on the surface stress and ion exchange layer depth of microcrystalline glass products. In particular, when the Na2O / Y2O3 ratio is 6.0 or less, the surface stress and ion exchange layer depth of the microcrystalline glass product can be increased, and more preferably, the Na2O / Y2O3 ratio is 0.1 to 5.0. In some embodiments, it is even more preferable that the Na2O / Y2O3 ratio is 0.3 to 2.0, which can also improve the size of the fragments of the microcrystalline glass product. In some embodiments, the surface stress of the microcrystalline glass product is 600 MPa or higher, preferably 650 MPa or higher, more preferably 700 MPa or higher, and the ion exchange layer depth of the microcrystalline glass product is 20 μm or higher, preferably 30 μm or higher, more preferably 40 μm or higher. In some embodiments, the Na2O / Y2O3 value can be 0, greater than 0, 0.1, 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, 0.8, 0.9, 1.0, 1.1, 1.2, 1.3, 1.4, 1.5, 1.6, 1.7, 1.8, 1.9, 2.0, 2.3, 2.5, 2.7, 3.0, 3.3, 3.5, 3.7, 4.0, 4.3, 4.5, 4.7, 5.0, 5.3, 5.5, 5.7, or 6.0.

[0214] In some embodiments of the present invention, when the ratio of Y2O3 to the total content of Al2O3 and SiO2 (Al2O3+SiO2), Y2O3 / (Al2O3+SiO2), is controlled to be greater than 0 and less than or equal to 0.15, the microcrystalline performance of the glass can be optimized, resulting in microcrystalline glass and microcrystalline glass products having an appropriate degree of microcrystallineity and excellent performance. Therefore, preferably, Y2O3 / (Al2O3+SiO2) is 0.01 to 0.12, more preferably 0.03 to 0.09, and the height of the ball drop test for microcrystalline glass and microcrystalline glass products is large. In some embodiments, the height of the ball drop test for microcrystalline glass products is preferably 1300 mm or more, more preferably 1400 mm or more, and even more preferably 1500 mm or more. In some embodiments, the value of Y2O3 / (Al2O3+SiO2) may be greater than 0, 0.01, 0.02, 0.03, 0.04, 0.05, 0.06, 0.07, 0.08, 0.09, 0.1, 0.11, 0.12, 0.13, 0.14, or 0.15.

[0215] B2O3 can improve the network structure of glass, optimize the chemical strengthening performance of glass and microcrystalline glass, and improve the drop height of microcrystalline glass products. However, if the B2O3 content exceeds 5%, it is unfavorable for glass molding and prone to crystal precipitation during molding. Therefore, the upper limit of the B2O3 content is 5%, preferably 3%, more preferably 2%, and even more preferably no B2O3. In some embodiments, B2O3 can be included in amounts of about 0%, greater than 0%, 0.1%, 0.5%, 1.0%, 1.5%, 2.0%, 2.5%, 3.0%, 3.5%, 4.0%, 4.5%, and 5.0%.

[0216] While ZnO can lower the melting difficulty of glass, high ZnO content promotes low-temperature microcrystallization of glass, lowering the crystallinity and transmittance of microcrystalline glass and microcrystalline glass products, and increasing the cloudiness of microcrystalline glass and microcrystalline glass products. Therefore, the upper limit of its content is 2%, preferably 1%, and more preferably ZnO-free. In some embodiments, ZnO can be included in amounts of about 0%, greater than 0%, 0.1%, 0.5%, 1.0%, 1.5%, and 2.0%.

[0217] While MgO is beneficial in lowering the melting difficulty of glass and increasing the drop height of microcrystalline glass and microcrystalline glass products, it promotes low-temperature microcrystallization of glass and reduces the crystallinity and transmittance of microcrystalline glass and microcrystalline glass products; therefore, the upper limit of its content is 2%, preferably 1%. In some embodiments, MgO can be included in amounts of about 0%, greater than 0%, 0.1%, 0.5%, 1.0%, 1.5%, and 2.0%.

[0218] SrO is an optional component that enhances the low-temperature meltability of glass and suppresses crystal precipitation during glass molding. If the content is too high, it affects the glass molding process and makes crystals more likely to precipitate during molding. Therefore, the SrO content range in this invention is 0 to 5%, preferably 0 to 3%, more preferably 0 to 1%, and even more preferably no SrO. In some embodiments, SrO can be included in amounts of about 0%, greater than 0%, 0.1%, 0.5%, 1.0%, 1.5%, 2.0%, 2.5%, 3.0%, 3.5%, 4.0%, 4.5%, and 5.0%.

[0219] BaO is an optional component that helps improve the glass-forming performance of glass, but too much of it is detrimental to glass molding. Therefore, the BaO content range in the present invention is 0-5%, preferably 0-3%, more preferably 0-1%, and even more preferably no BaO. In some embodiments, the BaO content can be about 0%, greater than 0%, 0.1%, 0.5%, 1.0%, 1.5%, 2.0%, 2.5%, 3.0%, 3.5%, 4.0%, 4.5%, and 5.0%.

[0220] CaO can increase the hardness of glass, but if the content is too high, it tends to emulsify during glass molding. Therefore, the CaO content in this invention is in the range of 0 to 5%, preferably 0 to 3%, more preferably 0 to 1%, and even more preferably no CaO. In some embodiments, the CaO content can be about 0%, greater than 0%, 0.1%, 0.5%, 1.0%, 1.5%, 2.0%, 2.5%, 3.0%, 3.5%, 4.0%, 4.5%, and 5.0%.

[0221] TiO2 is an optional component that helps lower the melting temperature of the matrix glass and improve its chemical stability. The present invention includes 5% or less TiO2, which makes it easier to control the crystallization process of the matrix glass, preferably 3% or less, more preferably 1% or less. In some embodiments, it is even more preferable to not include TiO2. In some embodiments, TiO2 can be included in amounts of about 0%, greater than 0%, 0.1%, 0.3%, 0.5%, 1%, 1.5%, 2%, 2.5%, 3%, 3.5%, 4%, 4.5%, and 5%.

[0222] Ln2O3 (one or more of La2O3, Gd2O3, and Yb2O3) is an optional component that enhances the hardness and chemical stability of microcrystalline glass and controls crystallization during glass molding. If the content is too high, it affects the chemical strengthening performance of the glass and reduces the strength of the microcrystalline glass product. Therefore, the Ln2O3 content in this invention is in the range of 0-5%, preferably 0-4%, more preferably 0-3%, and even more preferably no Ln2O3. In some embodiments, Ln2O3 can be included in amounts of about 0%, greater than 0%, 0.1%, 0.5%, 1.0%, 1.5%, 2.0%, 2.5%, 3.0%, 3.5%, 4.0%, 4.5%, and 5.0%.

[0223] In some embodiments, glass, microcrystalline glass, or microcrystalline glass products may contain 0-2% of a clarifying agent to enhance the degassing ability of the glass, microcrystalline glass, or microcrystalline glass products. Such clarifying agents include, but are not limited to, one or more of Sb2O3, SnO2, SnO, CeO2, F, Cl, and Br, with Sb2O3 being preferably used as the clarifying agent. When the clarifying agents are used alone or in combination, the upper limit of their content is preferably 1%, more preferably 0.5%. In some embodiments, the content of one or more of the clarifying agents is about 0%, 0.1%, 0.2%, 0.3%, 0.4%, 0.5%, 0.6%, 0.7%, 0.8%, 0.9%, 1.0%, 1.1%, 1.2%, 1.3%, 1.4%, 1.5%, 1.6%, 1.7%, 1.8%, 1.9%, and 2.0%.

[0224] In order to obtain the excellent properties such as mechanical properties, optical properties, productivity, and chemical strengthening properties expected of the glass, microcrystalline glass, or microcrystalline glass product of the present invention, in some embodiments of the present invention, it is preferable that the glass is F-free and / or Ta2O5-free.

[0225] Since PbO and As2O3 are toxic substances and adding even small amounts does not meet environmental protection requirements, some embodiments of the present invention preferably do not contain PbO and As2O3.

[0226] In some embodiments of the present invention, by adding a colorant, a colored matrix glass, microcrystalline glass, or microcrystalline glass product can be manufactured, and the matrix glass, microcrystalline glass, or microcrystalline glass product can exhibit different colors. The colorant includes: NiO: 0-4%, and / or Ni2O3: 0-4%, and / or CoO: 0-2%, and / or Co2O3: 0-2%, and / or Fe2O3: 0-7%, and / or MnO2: 0-4%, and / or Er2O3: 0-8%, and / or Nd2O3: 0-8%, and / or Cu2O: 0-4%, and / or Pr2O5: 0-8%, and / or CeO2: 0-4%. The weight percentages of the colorant and their roles are described in detail below:

[0227] The brown or green matrix glass, microcrystalline glass, or microcrystalline glass product manufactured according to the present invention uses NiO, Ni2O3, and Pr2O5 as colorants. NiO and Ni2O3 are colorants used in the manufacture of brown or green matrix glass, microcrystalline glass, or microcrystalline glass product. The two components can be used individually or in combination, and their respective contents are generally 4% or less, preferably 3% or less. If the content exceeds 4%, the colorants cannot dissolve well in the matrix glass, microcrystalline glass, or microcrystalline glass product. Therefore, the lower limit of their respective contents is 0.1% or more, and if it is less than 0.1%, the color of the matrix glass, microcrystalline glass, or microcrystalline glass product is not apparent. In some embodiments, the mixture may contain approximately 0.1%, 0.2%, 0.3%, 0.4%, 0.5%, 0.6%, 0.7%, 0.8%, 0.9%, 1.0%, 1.1%, 1.2%, 1.3%, 1.4%, 1.5%, 1.6%, 1.7%, 1.8%, 1.9%, 2.0%, 2.1%, 2.2%, 2.3%, 2.4%, 2.5%, 2.6%, 2.7%, 2.8%, 2.9%, 3.0%, 3.1%, 3.2%, 3.3%, 3.4%, 3.5%, 3.6%, 3.7%, 3.8%, 3.9%, and 4.0% NiO and Ni2O3. When used in combination, the total content of NiO and Ni2O3 is generally 4% or less, with a minimum total content of 0.1% or more. In some embodiments, it may contain approximately 0.1%, 0.2%, 0.3%, 0.4%, 0.5%, 0.6%, 0.7%, 0.8%, 0.9%, 1.0%, 1.1%, 1.2%, 1.3%, 1.4%, 1.5%, 1.6%, 1.7%, 1.8%, 1.9%, 2.0%, 2.1%, 2.2%, 2.3%, 2.4%, 2.5%, 2.6%, 2.7%, 2.8%, 2.9%, 3.0%, 3.1%, 3.2%, 3.3%, 3.4%, 3.5%, 3.6%, 3.7%, 3.8%, 3.9%, and 4.0% NiO and Ni2O3. Pr2O5 is used as a coloring agent for green matrix glass, microcrystalline glass, or microcrystalline glass products, and is used alone, with a content of generally 8% or less, preferably 6% or less, and a lower limit of 0.4% or more.If the concentration is less than 0.4%, the color of the matrix glass, microcrystalline glass, or microcrystalline glass product is not apparent. In some embodiments, Pr2O5 can be contained in amounts of approximately 0.4%, 0.6%, 0.8%, 1.0%, 1.2%, 1.4%, 1.6%, 1.8%, 2.0%, 2.2%, 2.4%, 2.6%, 2.8%, 3.0%, 3.2%, 3.4%, 3.6%, 3.8%, 4.0%, 4.2%, 4.4%, 4.6%, 4.8%, 5.0%, 5.2%, 5.4%, 5.6%, 5.8%, 6.0%, 6.2%, 6.4%, 6.6%, 6.8%, 7.0%, 7.2%, 7.4%, 7.6%, 7.8%, and 8.0%.

[0228] The blue matrix glass, microcrystalline glass, or microcrystalline glass product manufactured according to the present invention uses CoO and Co2O3 as colorants, and the two colorant components can be used individually or in combination. The content of each is generally 2% or less, preferably 1.8% or less. If the content exceeds 2%, the colorant cannot dissolve well in the matrix glass, microcrystalline glass, or microcrystalline glass product. Therefore, the lower limit of the content of each is 0.05% or more, and if it is less than 0.05%, the color of the matrix glass, microcrystalline glass, or microcrystalline glass product is not apparent. In some embodiments, the product may contain approximately 0.05%, 0.1%, 0.2%, 0.3%, 0.4%, 0.5%, 0.6%, 0.7%, 0.8%, 0.9%, 1.0%, 1.1%, 1.2%, 1.3%, 1.4%, 1.5%, 1.6%, 1.7%, 1.8%, 1.9%, and 2.0% of CoO or Co2O3. When used in combination, the total content of CoO and Co2O3 does not exceed 2%, and the lower limit of the total content is 0.05% or higher. In some embodiments, it may contain CoO and Co2O3 in amounts of approximately 0.05%, 0.1%, 0.2%, 0.3%, 0.4%, 0.5%, 0.6%, 0.7%, 0.8%, 0.9%, 1.0%, 1.1%, 1.2%, 1.3%, 1.4%, 1.5%, 1.6%, 1.7%, 1.8%, 1.9%, and 2.0%.

[0229] The yellow matrix glass, microcrystalline glass, or microcrystalline glass product manufactured according to the present invention uses Cu2O and CeO2 as colorants, and the two colorant components can be used individually or in mixture. The lower limit of their respective content is 0.5% or more, and if the content is less than 0.5%, the color of the matrix glass, microcrystalline glass, or microcrystalline glass product is not apparent. Therefore, when Cu2O is used alone, the content is 4% or less, preferably 3% or less, and if the content exceeds 4%, the matrix glass is more likely to precipitate crystals. In some embodiments, the mixture may contain approximately 0.5%, 0.6%, 0.7%, 0.8%, 0.9%, 1.0%, 1.1%, 1.2%, 1.3%, 1.4%, 1.5%, 1.6%, 1.7%, 1.8%, 1.9%, 2.0%, 2.1%, 2.2%, 2.3%, 2.4%, 2.5%, 2.6%, 2.7%, 2.8%, 2.9%, 3.0%, 3.1%, 3.2%, 3.3%, 3.4%, 3.5%, 3.6%, 3.7%, 3.8%, 3.9%, and 4.0% Cu2O. When CeO2 is used alone, its content is generally 4% or less, preferably 3% or less, and if the content exceeds 4%, the glossiness of the matrix glass, microcrystalline glass, or microcrystalline glass product deteriorates. In some embodiments, it can contain approximately 0.5%, 0.6%, 0.7%, 0.8%, 0.9%, 1.0%, 1.1%, 1.2%, 1.3%, 1.4%, 1.5%, 1.6%, 1.7%, 1.8%, 1.9%, 2.0%, 2.1%, 2.2%, 2.3%, 2.4%, 2.5%, 2.6%, 2.7%, 2.8%, 2.9%, 3.0%, 3.1%, 3.2%, 3.3%, 3.4%, 3.5%, 3.6%, 3.7%, 3.8%, 3.9%, and 4.0% CeO2. At the same time, adding a small amount of CeO2 to the glass has a defoaming effect, and CeO2 can also be used as a fining agent in the glass. When two colorants are mixed and used together, their total content is generally 4% or less, and the lower limit of their total content is 0.5% or more.In some embodiments, it may contain approximately 0.5%, 0.6%, 0.7%, 0.8%, 0.9%, 1.0%, 1.1%, 1.2%, 1.3%, 1.4%, 1.5%, 1.6%, 1.7%, 1.8%, 1.9%, 2.0%, 2.1%, 2.2%, 2.3%, 2.4%, 2.5%, 2.6%, 2.7%, 2.8%, 2.9%, 3.0%, 3.1%, 3.2%, 3.3%, 3.4%, 3.5%, 3.6%, 3.7%, 3.8%, 3.9%, and 4.0% CeO2 and Cu2O.

[0230] The black or smoke-gray matrix glass, microcrystalline glass, or microcrystalline glass products manufactured according to the present invention use Fe2O3 alone as a coloring agent, or two coloring agents, Fe2O3 and CoO, or two coloring agents, Fe2O3 and Co2O3, or three coloring agents, Fe2O3, CoO and NiO, or a mixture of three coloring agents, Fe2O3, Co2O3 and NiO. The coloring agent used in the manufacture of the black or smoke-gray matrix glass, microcrystalline glass, or microcrystalline glass products is mainly Fe2O3, with a content of 7% or less, preferably 5% or less, and a lower limit of 0.2% or more. In some embodiments, the content is approximately 0.2%, 0.3%, 0.4%, 0.5%, 0.6%, 0.7%, 0.8%, 0.9%, 1.0%, 1.1%, 1.2%, 1.3%, 1%. It can contain Fe2O3 in the following amounts: 0.4%, 1.5%, 1.6%, 1.7%, 1.8%, 1.9%, 2.0%, 2.1%, 2.2%, 2.3%, 2.4%, 2.5%, 2.6%, 2.7%, 2.8%, 2.9%, 3.0%, 3.1%, 3.2%, 3.3%, 3.4%, 3.5%, 3.6%, 3.7%, 3.8%, 3.9%, 4.0%, 4.5%, 5.0%, 5.5%, 6.0%, 6.5%, and 7.0%. CoO and Co2O3 are absorbed by visible light and can deepen the coloration of matrix glass, microcrystalline glass, or microcrystalline glass products. When used in mixture with Fe2O3, the respective content is generally 0.6% or less, with a lower limit of 0.2% or more. In some embodiments, the mixture may contain approximately 0.2%, 0.3%, 0.4%, 0.5%, or 0.6% of CoO and / or Co2O3. NiO is absorbed by visible light and can deepen the coloration of the matrix glass, microcrystalline glass, or microcrystalline glass product. When used in combination, its content is 1% or less, and the lower limit of the total content is 0.2% or more. In some embodiments, the mixture may contain approximately 0.2%, 0.3%, 0.4%, 0.5%, 0.6%, 0.7%, 0.8%, 0.9%, or 1.0% of NiO.

[0231] The purple matrix glass, microcrystalline glass, or microcrystalline glass product manufactured according to the present invention uses MnO2 as a coloring agent, with a content of generally 4% or less, preferably 3% or less, and a lower limit of 0.1% or more. If the content is less than 0.1%, the color of the matrix glass, microcrystalline glass, or microcrystalline glass product is not apparent. In some embodiments, it may contain approximately 0.1%, 0.2%, 0.3%, 0.4%, 0.5%, 0.6%, 0.7%, 0.8%, 0.9%, 1.0%, 1.1%, 1.2%, 1.3%, 1.4%, 1.5%, 1.6%, 1.7%, 1.8%, 1.9%, 2.0%, 2.1%, 2.2%, 2.3%, 2.4%, 2.5%, 2.6%, 2.7%, 2.8%, 2.9%, 3.0%, 3.1%, 3.2%, 3.3%, 3.4%, 3.5%, 3.6%, 3.7%, 3.8%, 3.9%, and 4.0% MnO2.

[0232] The pink matrix glass, microcrystalline glass, or microcrystalline glass product manufactured according to the present invention uses Er2O3 as a coloring agent, with a content of generally 8% or less, preferably 6% or less. Because Er2O3, being a rare earth element, has low coloring efficiency, even if the amount used exceeds 8%, it is not possible to further deepen the color of the matrix glass, microcrystalline glass, or microcrystalline glass product, and instead increases costs. Therefore, the lower limit of its content is 0.4% or more, and if it is less than 0.4%, the color of the matrix glass, microcrystalline glass, or microcrystalline glass product is not apparent. In some embodiments, it can contain approximately 0.4%, 0.6%, 0.8%, 1.0%, 1.2%, 1.4%, 1.6%, 1.8%, 2.0%, 2.2%, 2.4%, 2.6%, 2.8%, 3.0%, 3.2%, 3.4%, 3.6%, 3.8%, 4.0%, 4.2%, 4.4%, 4.6%, 4.8%, 5.0%, 5.2%, 5.4%, 5.6%, 5.8%, 6.0%, 6.2%, 6.4%, 6.6%, 6.8%, 7.0%, 7.2%, 7.4%, 7.6%, 7.8%, and 8.0% Er2O3.

[0233] The purplish-red matrix glass, microcrystalline glass, or microcrystalline glass product manufactured according to the present invention uses Nd2O3 as a coloring agent, with a content of generally 8% or less, preferably 6% or less. Because Nd2O3, being a rare earth element, has low coloring efficiency, even if the amount used exceeds 8%, it is not possible to further deepen the color of the matrix glass, microcrystalline glass, or microcrystalline glass product, and instead increases costs. Therefore, the lower limit of its content is 0.4% or more, and if it is less than 0.4%, the color of the matrix glass, microcrystalline glass, or microcrystalline glass product is not apparent. In some embodiments, it can contain approximately 0.4%, 0.6%, 0.8%, 1.0%, 1.2%, 1.4%, 1.6%, 1.8%, 2.0%, 2.2%, 2.4%, 2.6%, 2.8%, 3.0%, 3.2%, 3.4%, 3.6%, 3.8%, 4.0%, 4.2%, 4.4%, 4.6%, 4.8%, 5.0%, 5.2%, 5.4%, 5.6%, 5.8%, 6.0%, 6.2%, 6.4%, 6.6%, 6.8%, 7.0%, 7.2%, 7.4%, 7.6%, 7.8%, and 8.0% Nd2O3.

[0234] The red matrix glass, microcrystalline glass, or microcrystalline glass product manufactured according to the present invention uses a mixed coloring agent of Er2O3, Nd2O3, and MnO2. In the glass, Er ions are absorbed at 400-500 nm, Mn ions are mainly absorbed at 500 nm, and Nd ions are strongly absorbed mainly at 580 nm. By mixing these three substances, red matrix glass, microcrystalline glass, or microcrystalline glass product can be manufactured. Since Er2O3 and Nd2O3 are rare earth colorants with relatively weak coloring ability, the amount of Er2O3 used is within 6%, and the amount of Nd2O3 used is within 4%. Since MnO2 has strong coloring ability, its amount used is within 2%, and the lower limit of the total content of the mixed colorants is 0.9% or more.

[0235] The terms “not containing” and “0%” as used herein mean that compounds, molecules, or elements, etc., were not intentionally added as raw materials for the matrix glass, microcrystalline glass, or microcrystalline glass product of the present invention. However, impurities or components that were not intentionally added as raw materials and / or equipment for manufacturing the matrix glass, microcrystalline glass, or microcrystalline glass product may be present in small or trace amounts in the final matrix glass, microcrystalline glass, or microcrystalline glass product, and these are also covered by the patent of the present invention.

[0236] In some embodiments of the present invention, the crystalline phase in the microcrystalline glass and microcrystalline glass products contains lithium monosilicate crystals, which imparts high strength to the microcrystalline glass and microcrystalline glass products of the present invention, resulting in increased fracture toughness, and higher drop ball height and four-point bending strength of the microcrystalline glass and microcrystalline glass products. The microcrystalline glass of the present invention has excellent chemical strengthening properties, and additional mechanical strength can be obtained through chemical strengthening. Due to a rational composition design, the grain size of the microcrystalline glass and microcrystalline glass products obtained by the present invention is appropriate, and the microcrystalline glass and microcrystalline glass products of the present invention have high strength. Since the microcrystalline glass and microcrystalline glass products of the present invention have good crystallinity, they have excellent mechanical properties. Crystallinity as described herein refers to the perfection of the crystal, where the arrangement of mass points inside the crystal is relatively regular, the diffraction lines are strong, sharp and symmetrical, and the full width at half maximum of the diffraction peak is close to the width measured by instrument measurement, while crystals with poor crystallinity have off-center defects and the peak shape of the diffraction lines is broad and dispersed. The poorer the crystallinity, the weaker the diffraction ability, and the wider the diffraction peak becomes before it disappears into the background. In some embodiments, the crystallinity of the microcrystalline glass product or microcrystalline glass is 50% or more, preferably 60% or more, and more preferably 70% or more.

[0237] The grain size and type of microcrystalline glass or microcrystalline glass product of the present invention affect the cloudiness and transmittance of the microcrystalline glass or microcrystalline glass product, with smaller grain sizes resulting in higher transmittance and lower cloudiness resulting in higher transmittance. In some embodiments, the cloudiness of a microcrystalline glass product or microcrystalline glass with a thickness of 1 mm or less is 0.15% or less, preferably 0.12% or less, and more preferably 0.1% or less. In some embodiments, the grain size of the microcrystalline glass product or microcrystalline glass is 50 nm or less, preferably 40 nm or less, and more preferably 30 nm or less.

[0238] In some embodiments, the crystalline phase content and refractive index in the microcrystalline glass or microcrystalline glass product of the present invention affect the |B| value of the microcrystalline glass or microcrystalline glass product, causing a bluish or yellowish tint to appear in the visible light range, affecting the optical performance of the product, and the |B| value is used to express the LAB (chromaticity value of material color). The microcrystalline glass or microcrystalline glass product exhibits a low |B| value in the visible light range, and in some embodiments, the average optical |B| value of the microcrystalline glass product or microcrystalline glass with a thickness of 1 mm or less at 400 to 800 nm is 0.6 or less, preferably 0.55 or less, and more preferably 0.5 or less.

[0239] In some embodiments, the microcrystalline glass or microcrystalline glass product of the present invention exhibits high transparency in the visible light range (i.e., the microcrystalline glass or microcrystalline glass product is transparent). The microcrystalline glass or microcrystalline glass product exhibits high transmittance in the visible light range, and in some embodiments, the average light transmittance of the microcrystalline glass product or microcrystalline glass with a thickness of 1 mm or less at 400 to 800 nm is preferably 89% or more. In some preferred embodiments, the light transmittance of the microcrystalline glass product or microcrystalline glass with a thickness of 1 mm or less at 550 nm is preferably 91% or more.

[0240] In some embodiments, antimicrobial components can be added to matrix glass, microcrystalline glass, or microcrystalline glass products. The microcrystalline glass or microcrystalline glass products described herein can be used in applications such as kitchen or dining tables that are likely to be exposed to harmful bacteria. Antimicrobial components that can be added to matrix glass, microcrystalline glass, or microcrystalline glass products include, but are not limited to, Ag, AgO, Cu, CuO, and Cu2O. In some embodiments, the content of the above antimicrobial components alone or in mixtures is 2% or less, preferably 1% or less.

[0241] The matrix glass, microcrystalline glass, and microcrystalline glass products of the present invention can be produced and manufactured by the following method:

[0242] Matrix glass production: The raw materials are uniformly mixed according to their component ratios. The uniformly mixed mixture is placed in a platinum or quartz crucible and melted in an electric or gas furnace at a temperature range of 1250-1650°C for 5-24 hours, depending on the difficulty of melting the glass composition. After melting and uniform stirring, the temperature is lowered to an appropriate level, the mixture is poured into a mold, and it is slowly cooled to produce the final product.

[0243] The matrix glass of the present invention can be formed by well-known methods.

[0244] The matrix glass of the present invention undergoes a microcrystallization process after molding or processing to uniformly precipitate crystals within the glass. This microcrystallization process can be carried out in one or two stages, preferably in two stages. A nucleation process is performed at a first temperature, and then a crystal growth process is carried out at a second temperature higher than the nucleation process temperature. The microcrystallization process performed at the first temperature is called the first microcrystallization process, and the microcrystallization process performed at the second temperature is called the second microcrystallization process.

[0245] In order to obtain the desired physical properties of the microcrystalline glass, the crystallization process is preferably as follows.

[0246] By performing the microcrystalline treatment in the above one-step process, the nucleation process and the crystal growth process can be carried out continuously. That is, the temperature is raised to a predetermined crystallization treatment temperature, and after reaching the crystallization treatment temperature, the temperature is maintained for a certain period of time and then cooled. This crystallization treatment temperature is preferably 600 to 750 °C, and more preferably 650 to 700 °C in order to precipitate the expected crystal phase. The holding time at the crystallization treatment temperature is preferably 0 to 8 hours, and more preferably 1 to 6 hours.

[0247] When performing the microcrystalline treatment in the above two-step process, the first temperature is preferably 470 to 630 °C, and the second temperature is preferably 650 to 750 °C. At the first temperature, the holding time is preferably 0 to 24 hours, and more preferably 2 to 15 hours. At the second temperature, the holding time is preferably 0 to 10 hours, and more preferably 0.5 to 6 hours.

[0248] The above holding time of 0 hours means that the temperature is lowered or raised again before 1 minute has passed since reaching that temperature.

[0249] In some embodiments, the matrix glass or microcrystalline glass described herein can be produced into a molded body by various techniques. The molded body includes, but is not limited to, a sheet. The process includes, but is not limited to, slit drawing, the float method, roll rolling, and other sheet forming techniques known in the art. Alternatively, the matrix glass or microcrystalline glass can be formed by the float method or roll rolling method known in the art.

[0250] The matrix glass or microcrystalline glass of the present invention can be used to produce a sheet-shaped glass molded body by methods such as polishing or glazing, etc., but the method for producing the glass molded body is not limited to these methods.

[0251] The matrix glass or microcrystalline glass molded body of the present invention can be produced into various shapes by using methods such as hot bending or pressing at a certain temperature, but is not limited to these methods.

[0252] The matrix glass, glass-ceramics, and glass-ceramic products described in the present invention can have any reasonable and useful thickness.

[0253] The glass-ceramics of the present invention can improve mechanical properties by precipitating crystals, obtain higher strength by forming a compressive stress layer, and further manufacture glass-ceramic products.

[0254] In some embodiments, the matrix glass or glass-ceramics can be processed into a sheet shape and / or shaped (such as drilling, heat bending, etc.), and after shaping, polishing and / or grinding can be performed, and chemical strengthening can be carried out by a chemical strengthening process.

[0255] The chemical strengthening described in the present invention is, that is, the ion exchange method. Both the matrix glass and glass-ceramics of the present invention can be ion-exchanged by methods known in the art. In ion exchange, smaller metal ions in the matrix glass or glass-ceramics are replaced or "exchanged" by larger metal ions having the same valence state closer to the matrix glass or glass-ceramics. Substituting smaller ions with larger ions generates compressive stress in the matrix glass or glass-ceramics and forms a compressive stress layer.

[0256] [[ID=第十八条 In some embodiments, the metal ions are monovalent alkali metal ions (e.g., Na + , K + , Rb + , Cs + , etc.), and the ion exchange is carried out by immersing the matrix glass or glass-ceramics in a salt bath of at least one molten salt containing smaller metal ions, and this larger metal ion is used to replace the smaller metal ions in the matrix glass. Or, Ag + , Tl + , Cu +Monovalent ions can also be exchanged using other monovalent metal ions. One or more ion exchange steps for chemically strengthening matrix glass or microcrystalline glass include, but are not limited to, immersion in a single salt bath or immersion in multiple salt baths of the same or different compositions, and washing and / or annealing steps between immersions.

[0257] In some embodiments, the matrix glass or microcrystalline glass can be ion-exchanged by immersion in a salt bath containing molten Na salt (e.g., NaNO3) at a temperature of approximately 430°C to 470°C for approximately 6 to 20 hours, preferably within a temperature range of 435°C to 460°C and a time range of 8 to 13 hours. In this embodiment, the Na ions replace some of the Li ions in the matrix glass or microcrystalline glass, thereby forming a surface compression layer and exhibiting high mechanical properties. In some embodiments, the matrix glass or microcrystalline glass can be ion-exchanged by immersion in a salt bath containing molten K salt (e.g., KNO3) at a temperature of approximately 400°C to 450°C for 1 to 8 hours, preferably within a time range of 2 to 4 hours.

[0258] In some embodiments, there are ion implantation methods, which involve implanting ions into the surface of the matrix glass or microcrystalline glass, and thermal strengthening methods, which involve heating the matrix glass or microcrystalline glass and then rapidly cooling it.

[0259] The performance indicators of the microcrystalline glass and / or microcrystalline glass products and / or matrix glass of the present invention are tested according to the following method.

[0260] [Cloudiness level] Using the EEL57 D cloudiness meter, samples of 1 mm or less are prepared and measured according to GB 2410-80.

[0261] [Crystal grain size] The microcrystalline glass is surface-treated in HF acid, and then molten metal is sprayed onto the surface of the microcrystalline glass. The surface is then scanned with a scanning electron microscope (SEM) to determine the grain size.

[0262] [Light transmittance] The light transmittance described herein is external transmittance and may be abbreviated as transmittance. The sample is processed to a thickness of 1 mm or less, and the opposing surfaces are polished in parallel. The average light transmittance from 400 to 800 nm is then measured using a Hitachi U-41000 spectrophotometer. The sample was processed to a thickness of 1 mm or less, and the opposing surfaces were polished to a parallel finish. The light transmittance at 550 nm was then measured using a Hitachi U-41000 spectrophotometer.

[0263] [Crystalliness] The XRD diffraction peaks are compared with database spectra, and the crystallinity is determined by calculating the ratio of the crystalline phase diffraction intensity to the total spectral intensity. Internal localization is then performed using pure quartz crystals. [Surface stress] and [Ion exchange layer depth] Surface stress is measured using a glass surface stress meter FSM-6000 LEUV. The depth of the ion exchange layer is measured using a glass surface stress meter, SLP-2000. The measurement conditions used are a refractive index of 1.54 and an optical elastic constant of 25.3 [(nm / cm) / MPa] for the sample.

[0264] [Height of ball drop test] A microcrystalline glass product sample measuring 150 × 57 × 0.55 mm is placed on a glass fixing jig, and a 132 g steel ball is dropped from a predetermined height. The maximum drop height at which the sample can withstand the impact without breaking is defined as the drop height. Specifically, the test is conducted starting from a drop height of 800 mm, and if no breakage occurs, the height is changed in the order of 850 mm, 900 mm, 950 mm, and 1000 mm or more. In the specific examples of the "drop height," microcrystalline glass products are used as the test subject. In the examples, the test data recorded as 1000 mm indicates that the microcrystalline glass product could withstand the impact without breaking even when a steel ball was dropped from a height of 1000 mm. The drop height in this invention may be abbreviated as "drop height."

[0265] [Height at which the ball falls from the main body] A 150 x 57 x 0.55 mm microcrystalline glass sample is placed on a glass fixing jig, and a 32 g steel ball is dropped from a predetermined height. The maximum drop height at which the sample can withstand the impact without breaking is the same as the drop height of the main body. Specifically, the test is conducted starting from a drop height of 500 mm, and if no breakage occurs, the height is changed in the order of 550 mm, 600 mm, 650 mm, and 700 mm or higher. In the specific example of the "main body drop height," microcrystalline glass is used as the test subject. In the example, the test data recorded as 1000 mm indicates that the microcrystalline glass could withstand the impact without breaking even when a steel ball was dropped onto it from a height of 1000 mm.

[0266] [Fracture toughness] Using a method that directly measures the dimensions of indentation expansion cracks, the sample specifications are 2mm x 4mm x 20mm. After chamfering, polishing, and buffing, the sample is prepared, and a force of 49N is applied to the sample using a Vickers hardness indenter and held for 30s to create an indentation. The fracture strength is then measured using a three-point bending method.

[0267] [4-point bending strength] A microcontroller-controlled electronic universal tester CMT 6502 is used, with sample specifications of a thickness of 1 mm or less, and testing is performed according to ASTM C 158-2002. The thickness of the sample is preferably 0.2 to 1 mm, more preferably 0.3 to 0.9 mm, still more preferably 0.5 to 0.8 mm, and even more preferably 0.55 mm or 0.6 mm or 0.68 mm or 0.72 mm or 0.75 mm.

[0268] [Vickers hardness] The load (N) when a pyramidal depression is pressed into the test surface using a diamond square pyramid indenter with an angle of 136° formed on the opposite surfaces is divided by the surface area (mm 2 ) represented by the length of the depression. The test is carried out with a test load of 100 (N) and a holding time of 15 (seconds). In the present invention, Vickers hardness may be abbreviated as hardness.

[0269] [|B| value] The B value is measured using a Minolta CM-700d. Zero calibration and white plate calibration of the instrument are performed with the attached calibration long tube and short tube respectively. After calibration, a blank test is performed with the long tube to determine the calibration stability and reliability of the instrument (B ≤ 0.05). After instrument calibration, the product is placed in the zero long tube for measurement. The |B| value is the absolute value of the B value.

[0270] [Coefficient of thermal expansion] The coefficient of thermal expansion (α 20℃-120℃ ) is tested according to the method specified in GB / T7962.16-2010.

[0271] [Refractive index] The refractive index (nd) is tested according to the method specified in GB / T7962.1-2010.

[0272] The microcrystalline glass product of the present invention has the following properties: 1) In some embodiments, the surface stress of the microcrystalline glass product is 600 MPa or more, preferably 650 MPa or more, more preferably 700 MPa or more. 2) In some embodiments, the four-point bending strength of the microcrystalline glass product is 600 MPa or more, preferably 650 MPa or more, more preferably 700 MPa or more. 3) In some embodiments, the ion exchange layer depth of the microcrystalline glass product is 20 μm or more, preferably 30 μm or more, and more preferably 40 μm or more. 4) In some embodiments, the height of the ball drop test for the microcrystalline glass product is 1300 mm or more, preferably 1400 mm or more, and more preferably 1500 mm or more. 5) In some embodiments, the fracture toughness of the microcrystalline glass product is 1 MPa·m 1 / 2 Preferably, the above is 1.1 MPa·m 1 / 2 The above is a comfort level of 1.2 MPa·m. 1 / 2 That's all. 6) In some embodiments, the Vickers hardness (Hv) of the microcrystalline glass product is 700 kgf / mm². 2 Preferably 720 kgf / mm² 2 More preferably 730 kgf / mm 2 That's all. 7) In some embodiments, the crystallinity of the microcrystalline glass product is 50% or more, preferably 60% or more, and more preferably 70% or more. 8) In some embodiments, the crystal grain size of the microcrystalline glass product is 50 nm or less, preferably 40 nm or less, and more preferably 30 nm or less. 9) In some embodiments, the cloudiness of the microcrystalline glass product with a thickness of 1 mm or less is 0.15% or less, preferably 0.12% or less, more preferably 0.1% or less. This thickness is preferably 0.2 to 1 mm, more preferably 0.3 to 0.9 mm, even more preferably 0.5 to 0.8 mm, and even more preferably 0.55 mm, 0.6 mm, 0.68 mm, 0.72 mm, or 0.75 mm. 10) In some embodiments, the average transmittance of the microcrystalline glass product with a thickness of 1 mm or less at wavelengths of 400 to 800 nm is 89% or more. This thickness is preferably 0.2 to 1 mm, more preferably 0.3 to 0.9 mm, even more preferably 0.5 to 0.8 mm, and even more preferably 0.55 mm, 0.6 mm, 0.68 mm, 0.72 mm, or 0.75 mm. 11) In some embodiments, the transmittance at a wavelength of 550 nm of a microcrystalline glass product with a thickness of 1 mm or less is 91% or more. This thickness is preferably 0.2 to 1 mm, more preferably 0.3 to 0.9 mm, even more preferably 0.5 to 0.8 mm, and even more preferably 0.55 mm, 0.6 mm, 0.68 mm, 0.72 mm, or 0.75 mm. 12) In some embodiments, the average optics |B| value of the microcrystalline glass product with a thickness of 1 mm or less is 0.6 or less, preferably 0.55 or less, and more preferably 0.5 or less at 400 to 800 nm. This thickness is preferably 0.2 to 1 mm, more preferably 0.3 to 0.9 mm, even more preferably 0.5 to 0.8 mm, and even more preferably 0.55 mm, 0.6 mm, 0.68 mm, 0.72 mm, or 0.75 mm.

[0273] The microcrystalline glass of the present invention has the following properties: 1) In some embodiments, the crystallinity of the microcrystalline glass is 50% or more, preferably 60% or more, and more preferably 70% or more. 2) In some embodiments, the grain size of the microcrystalline glass is 50 nm or less, preferably 40 nm or less, and more preferably 30 nm or less. 3) In some embodiments, the cloudiness of the microcrystalline glass with a thickness of 1 mm or less is 0.15% or less, preferably 0.12% or less, more preferably 0.1% or less. This thickness is preferably 0.2 to 1 mm, more preferably 0.3 to 0.9 mm, even more preferably 0.5 to 0.8 mm, and even more preferably 0.55 mm, 0.6 mm, 0.68 mm, 0.72 mm, or 0.75 mm. 4) In some embodiments, the average transmittance of the microcrystalline glass product with a thickness of 1 mm or less at wavelengths of 400 to 800 nm is 89% or more. This thickness is preferably 0.2 to 1 mm, more preferably 0.3 to 0.9 mm, even more preferably 0.5 to 0.8 mm, and even more preferably 0.55 mm, 0.6 mm, 0.68 mm, 0.72 mm, or 0.75 mm. 5) In some embodiments, the transmittance at a wavelength of 550 nm of a microcrystalline glass product with a thickness of 1 mm or less is 91% or more. This thickness is preferably 0.2 to 1 mm, more preferably 0.3 to 0.9 mm, even more preferably 0.5 to 0.8 mm, and even more preferably 0.55 mm, 0.6 mm, 0.68 mm, 0.72 mm, or 0.75 mm. 6) In some embodiments, the height at which the microcrystalline glass body falls is 1000 mm or more, preferably 1100 mm or more, and more preferably 1200 mm or more. 7) In some embodiments, the average optics |B| value of the microcrystalline glass with a thickness of 1 mm or less is 0.6 or less, preferably 0.55 or less, and more preferably 0.5 or less at 400 to 800 nm. This thickness is preferably 0.2 to 1 mm, more preferably 0.3 to 0.9 mm, even more preferably 0.5 to 0.8 mm, and even more preferably 0.55 mm, 0.6 mm, 0.68 mm, 0.72 mm, or 0.75 mm. 8) In some embodiments, the Vickers hardness (Hv) of the microcrystalline glass is 650 kgf / mm². 2 Preferably 680 kgf / mm² 2 More than 700 kgf / mm 2 That's all. 9) In some embodiments, the thermal expansion coefficient of the microcrystalline glass (α 20℃-120℃ ) 75~95×10 -7 It is / K. 10) In some embodiments, the refractive index (n d The value is between 1.5700 and 1.5800.

[0274] The matrix glass of the present invention has the following properties: 1) In some embodiments, the thermal expansion coefficient of the matrix glass (α 20℃-120℃ ) is 50 x 10 -7 / K~70×10 -7 It is / K. 2) In some embodiments, the refractive index (n d The value is between 1.5600 and 1.5700.

[0275] Because the microcrystalline glass, microcrystalline glass products, and matrix glass of the present invention possess the excellent performance described above, they can be widely manufactured as glass lids or glass elements. Furthermore, the microcrystalline glass, microcrystalline glass products, and matrix glass of the present invention can be applied to electronic devices or display devices such as mobile phones, watches, computers, and touchscreens, and can be used in the manufacture of mobile phones, smartphones, tablets, laptops, PDAs, televisions, personal computers, MTA equipment, or industrial displays, or in the manufacture of touchscreens, protective windows, automobile windows, train windows, aircraft windows, touchscreen protective glass, or in the manufacture of hard disk substrates and solar cell substrates, or in the manufacture of white goods such as refrigerator parts and cooking appliances.

[0276] Examples To further clarify the technical solutions of the present invention, the following non-limiting embodiments are provided. While every effort has been made to ensure the accuracy of the numerical values ​​(e.g., quantities, temperatures, etc.) in the embodiments of the present invention, it should be noted that there are some errors and deviations. The composition itself is assigned in weight percent based on oxides and standardized to 100%.

[0277] <Examples of matrix glass> In this embodiment, matrix glass having the compositions shown in Tables 1 to 4 is obtained using the above-described method for manufacturing matrix glass. Furthermore, the properties of the matrix glass are measured using the test method described in the present invention, and the measurement results are shown in Tables 1 to 4.

[0278] [Table 1]

[0279] [Table 2]

[0280] [Table 3]

[0281] [Table 4]

[0282] <Examples of microcrystalline glass> In this embodiment, microcrystalline glass having the compositions shown in Tables 5 to 8 is obtained using the above-described method for manufacturing microcrystalline glass. Furthermore, the properties of the microcrystalline glass are measured using the test method described in the present invention, and the measurement results are shown in Tables 5 to 8.

[0283] [Table 5]

[0284] [Table 6]

[0285] [Table 7]

[0286] [Table 8]

[0287] <Examples of microcrystalline glass products> In this embodiment, microcrystalline glass products having the compositions shown in Tables 9 to 12 are obtained using the above-described method for manufacturing microcrystalline glass products. Furthermore, the properties of the microcrystalline glass products are measured using the test method described in the present invention, and the measurement results are shown in Tables 9 to 12.

[0288] [Table 9]

[0289] [Table 10]

[0290] Table 11

[0291] Table 12

Claims

1. A microcrystalline glass product containing the following components in weight %: SiO 2 : 45 to 70%, Al 2 O 3 : 8 to 18%, Li 2 O: 11 to 25%, ZrO 2 : 5 to 15%, P 2 O 5 : 2 to 10%, Y 2 O 3 : More than 0 and 8% or less, Na2O: 1 to 6%, TiO2: 0 to 1.5%, and The ratio of Y₂O₃ / ZrO₂ is 0.25–0.45, and the ratio of Na₂O / Y₂O₃ is 0.5–0.

8.

2. The microcrystalline glass product according to claim 1, further comprising the following components by weight: K 2 O: 0-5%, and / or MgO: 0-2%, and / or ZnO: 0-2%, and / or SrO: 0-5%, and / or BaO: 0-5%, and / or CaO: 0-5%, and / or B 2 O 3 : 0-5%, and / or Ln 2 O 3 : 0-5%, and / or clarifying agent: 0-2%, and the Ln 2 O 3 La 2 O 3 , Gd 2 O 3 Yb 2 O 3 It is one or more of the following, and the clarifying agent is Sb 2 O 3 SnO 2 SnO, CeO 2 It is one or more of the following: F, Cl, and Br.

3. SiO 2 , Al 2 O 3 Li 2 O, ZrO 2 , P 2 O 5 A microcrystalline glass product containing the following components, with weight percent being SiO₂: 45-70%, Al₂O₃: 8-18%, Li₂O: 11-25%, ZrO₂: 5-15%, P₂O₅: 2-10%, Y₂O₃: more than 0 but 8% or less, Na₂O: 1-6%, TiO₂: 0-1.5%, Y₂O₃ / ZrO₂ ratio being 0.25-0.45, Na₂O / Y₂O₃ ratio being 0.5-0.8, and an average luminescence |B| value of 400-800 nm for a 1 mm thick microcrystalline glass product being 0.6 or less.

4. A microcrystalline glass product containing a lithium silicate crystalline phase, comprising, by weight %, SiO₂: 45-70%, Al₂O₃: 8-18%, Li₂O: 11-25%, ZrO₂: 5-15%, P₂O₅: 2-10%, Y₂O₃: more than 0 but 8% or less, Na₂O: 1-6%, TiO₂: 0-1.5%, with a Y₂O₃ / ZrO₂ ratio of 0.25-0.45, a Na₂O / Y₂O₃ ratio of 0.5-0.8, and a ball drop test height of 1500 mm or more.

5. The microcrystalline glass product according to claim 3 or 4, comprising the following components by weight: K 2 O: 0-5%, and / or MgO: 0-2%, and / or ZnO: 0-2%, and / or SrO: 0-5%, and / or BaO: 0-5%, and / or CaO: 0-5%, and / or B 2 O 3 : 0-5%, and / or Ln 2 O 3 : 0-5%, and / or clarifying agent: 0-2%, and the Ln 2 O 3 La 2 O 3 , Gd 2 O 3 Yb 2 O 3 It is one or more of the following, and the clarifying agent is Sb 2 O 3 SnO 2 SnO, CeO 2 It is one or more of the following: F, Cl, and Br.

6. The aforementioned components are expressed in weight percent, and the content of each component satisfies one or more of the following three conditions, for the microcrystalline glass product according to any one of claims 1 to 4: 1)(Li 2 O+ZrO 2 +P 2 O 5 ) / Y 2 O 3 The range is 2.5 to 50.0; 2) Al 2 O 3 / ( Li 2 O+ZrO 2 +P 2 O 5 ) is between 0.16 and 0.9; 3) Y 2 O 3 / (Al 2 O 3 +SiO 2 The value is greater than 0 and less than or equal to 0.

15.

7. The microcrystalline glass product according to any one of claims 1 to 4, wherein the components are expressed in weight percent, and the content of each component satisfies one or more of the following three conditions: 1) (Li₂O + ZrO₂ + P₂O₅) / Y₂O₃ has a value between 5.0 and 15.0; 2) The ratio of Al₂O₃ / (Li₂O + ZrO₂ + P₂O₅) is between 0.19 and 0.5; 3) The ratio of Y₂O₃ / (Al₂O₃ +SiO₂) is between 0.02 and 0.

09.

8. The microcrystalline glass product according to any one of claims 1 to 4, wherein the components are expressed in weight percent, and the content of each component satisfies one or more of the following three conditions: 1) (Li₂O + ZrO₂ + P₂O₅) / Y₂O₃ has a value between 9.0 and 12.0; 2) The ratio of Al₂O₃ / (Li₂O + ZrO₂ + P₂O₅) is between 0.25 and 0.45; 3) The ratio of Y₂O₃ / (Al₂O₃ +SiO₂) is between 0.03 and 0.

06.

9. The microcrystalline glass product according to any one of claims 1 to 4, comprising the following components in % by weight: SiO 2 : 53 to 63%, and / or Al 2 O 3 : 8 to 12%, and / or Li 2 O: 14 to 21%, and / or ZrO 2 : 7 to 12%, and / or P 2 O 5 : 4 to 8%, and / or K 2 O: 0 to 2%, and / or MgO: 0 to 1%, and / or ZnO: 0 to 1%, and / or Na 2 O: 1.5 to 4%, and / or Y 2 O 3 : 2 to 6%, and / or SrO: 0 to 1%, and / or BaO: 0 to 1%, and / or CaO: 0 to 1%, and / or TiO 2 : 0 to 1%, and / or B 2 O 3 : 0 to 2%, and / or Ln 2 O 3 : 0 to 3%, and / or fining agent: 0 to 0.5%, wherein the Ln 2 O 3 is one or more of La 2 O 3 , Gd 2 O 3 , Yb 2 O 3 , and the fining agent is one or more of Sb 2 O 3 , SnO 2 , SnO, CeO 2 , F, Cl and Br.

10. The component does not contain SrO, and / or does not contain BaO, and / or does not contain CaO, and / or does not contain ZnO, and / or does not contain PbO, and / or does not contain As 2 O 3 and does not contain, and / or does not contain TiO 2 and does not contain, and / or does not contain B 2 O 3 and does not contain, and / or does not contain Ln 2 O 3 and does not contain, and / or does not contain F, and / or does not contain Ta 2 O 5 The microcrystalline glass product according to any one of claims 1 to 4, which does not contain the above.

11. The microcrystalline glass product according to any one of claims 1 to 4, wherein the crystalline phase of the microcrystalline glass product comprises lithium monosilicate and / or lithium phosphate.

12. The microcrystalline glass product according to any one of claims 1 to 4, wherein the crystalline phase of the microcrystalline glass product mainly contains lithium monosilicate, the weight percentage of lithium monosilicate is higher than that of other crystalline phases, and lithium monosilicate accounts for 10 to 63.5% of the microcrystalline glass product.

13. The microcrystalline glass product according to any one of claims 1 to 4, wherein the microcrystalline glass product contains a lithium phosphate crystalline phase, and the weight percentage of the lithium phosphate crystalline phase in the microcrystalline glass product is 3 to 15%.

14. The surface stress of the microcrystalline glass product is 600 MPa or more, and / or the four-point bending strength is 600 MPa or more, and / or the ion exchange layer depth is 20 μm or more, and / or the height of the ball drop test is 1300 mm or more, and / or the fracture toughness is 1 MPa·m 1 / 2 The above and / or a Vickers hardness of 700 kgf / mm² 2 A microcrystalline glass product according to any one of claims 1 to 4, wherein the above and / or the degree of crystallinity is 50% or more, and / or the grain size is 50 nm or less, and / or the degree of cloudiness of a microcrystalline glass product with a thickness of 1 mm is 0.15% or less, and / or the average transmittance at wavelengths of 400 to 800 nm of a microcrystalline glass product with a thickness of 1 mm is 89% or more, and / or the average transmittance at wavelengths of 550 nm of a microcrystalline glass product with a thickness of 1 mm is 91% or more, and / or the average optical |B| value at wavelengths of 400 to 800 nm of a microcrystalline glass product with a thickness of 1 mm is 0.6 or less.

15. The microcrystalline glass product according to any one of claims 1 to 4, further comprising the following components by weight: NiO: 0 to 4%, and / or Ni 2 O 3 : 0-4%, and / or CoO: 0-2%, and / or Co 2 O 3 : 0-2%, and / or Fe 2 O 3 : 0-7%, and / or MnO 2 : 0-4%, and / or Er 2 O 3 : 0-8%, and / or Nd 2 O 3 : 0-8%, and / or Cu 2 O: 0-4%, and / or Pr 2 O 3 : 0-8%, and / or CeO 2 : 0-4%.

16. Microcrystalline glass containing the following components by weight: SiO 2 : 45-70%, Al 2 O 3 : 8-18%, Li 2 O: 11-25%, ZrO 2 : 5-15%, P 2 O 5 : 2-10%, Y 2 O 3 : more than 0 and less than or equal to 8%, Na₂O: 1-6%, TiO₂: 0-1.5%, The ratio of Y₂O₃ / ZrO₂ is 0.25–0.45, and the ratio of Na₂O / Y₂O₃ is 0.5–0.

8.

17. The microcrystalline glass according to claim 16, further comprising the following components by weight: K 2 O: 0-5%, and / or MgO: 0-2%, and / or ZnO: 0-2%, and / or SrO: 0-5%, and / or BaO: 0-5%, and / or CaO: 0-5%, and / or B 2 O 3 : 0-5%, and / or Ln 2 O 3 : 0-5%, and / or clarifying agent: 0-2%, and the Ln 2 O 3 La 2 O 3 , Gd 2 O 3 Yb 2 O 3 It is one or more of the following, and the clarifying agent is Sb 2 O 3 SnO 2 SnO, CeO 2 It is one or more of the following: F, Cl, and Br.

18. SiO 2 , Al 2 O 3 Li 2 O, ZrO 2 , P 2 O 5 , Y 2 O 3 A microcrystalline glass containing the following components, with weight percent being SiO₂: 45-70%, Al₂O₃: 8-18%, Li₂O: 11-25%, ZrO₂: 5-15%, P₂O₅: 2-10%, Y₂O₃: more than 0 but 8% or less, Na₂O: 1-6%, TiO₂: 0-1.5%, Y₂O₃ / ZrO₂ ratio being 0.25-0.45, Na₂O / Y₂O₃ ratio being 0.5-0.8, and containing a monolithic crystalline phase, with the weight percent of monolithic acid being higher than that of other crystalline phases.

19. SiO 2 , Al 2 O 3 Li 2 O, ZrO 2 , P 2 O 5 A microcrystalline glass containing the following components, with weight percent being SiO₂: 45-70%, Al₂O₃: 8-18%, Li₂O: 11-25%, ZrO₂: 5-15%, P₂O₅: 2-10%, Y₂O₃: more than 0 but 8% or less, Na₂O: 1-6%, TiO₂: 0-1.5%, Y₂O₃ / ZrO₂ ratio being 0.25-0.45, Na₂O / Y₂O₃ ratio being 0.5-0.8, and an average optics |B| value of 0.6 or less at 400-800 nm in a 1 mm thick microcrystalline glass.

20. Microcrystalline glass according to claim 18 or 19, comprising the following components by weight: K 2 O: 0-5%, and / or MgO: 0-2%, and / or ZnO: 0-2%, and / or SrO: 0-5%, and / or BaO: 0-5%, and / or CaO: 0-5%, and / or B 2 O 3 : 0-5%, and / or Ln 2 O 3 : 0-5%, and / or clarifying agent: 0-2%, and the Ln 2 O 3 La 2 O 3 , Gd 2 O 3 Yb 2 O 3 It is one or more of the following, and the clarifying agent is Sb 2 O 3 SnO 2 SnO, CeO 2 It is one or more of the following: F, Cl, and Br.

21. The microcrystalline glass according to any one of claims 16 to 20, wherein the aforementioned components are expressed in weight percent, and the content of each component satisfies one or more of the following three conditions: 1)(Li 2 O+ZrO 2 +P 2 O 5 ) / Y 2 O 3 The range is 2.5 to 50.0; 2) Al 2 O 3 / ( Li 2 O+ZrO 2 +P 2 O 5 ) is between 0.16 and 0.9; 3) Y 2 O 3 / (Al 2 O 3 +SiO 2 The value is greater than 0 and less than or equal to 0.

15.

22. The microcrystalline glass according to any one of claims 16 to 20, wherein the components are expressed in weight percent, and the content of each component satisfies one or more of the following three conditions: 1) (Li₂O + ZrO₂ + P₂O₅) / Y₂O₃ has a value between 5.0 and 15.0; 2) The ratio of Al₂O₃ / (Li₂O + ZrO₂ + P₂O₅) is between 0.19 and 0.5; 3) The ratio of Y₂O₃ / (Al₂O₃ +SiO₂) is between 0.02 and 0.

09.

23. The microcrystalline glass according to any one of claims 16 to 20, wherein the components are expressed in weight percent, and the content of each component satisfies one or more of the following three conditions: 1) (Li₂O + ZrO₂ + P₂O₅) / Y₂O₃ has a value between 9.0 and 12.0; 2) The ratio of Al₂O₃ / (Li₂O + ZrO₂ + P₂O₅) is between 0.25 and 0.45; 3) The ratio of Y₂O₃ / (Al₂O₃ +SiO₂) is between 0.03 and 0.

06.

24. Microcrystalline glass according to any one of claims 16 to 20, comprising the following components by weight: SiO 2 : 53-63%, and / or Al 2 O 3 : 8-12%, and / or Li 2 O: 14–21%, and / or ZrO 2 : 7-12%, and / or P 2 O 5 : 4-8%, and / or K 2 O: 0-2%, and / or MgO: 0-1%, and / or ZnO: 0-1%, and / or Na 2 O: 1.5–4%, and / or Y 2 O 3 : 2-6%, and / or SrO: 0-1%, and / or BaO: 0-1%, and / or CaO: 0-1%, and / or TiO 2 : 0-1%, and / or B 2 O 3 : 0-2%, and / or Ln 2 O 3 : 0-3%, and / or clarifying agent: 0-0.5%, and the Ln 2 O 3 La 2 O 3 , Gd 2 O 3 Yb 2 O 3 It is one or more of the following, and the clarifying agent is Sb 2 O 3 SnO 2 SnO, CeO 2 It is one or more of the following: F, Cl, and Br.

25. The aforementioned components do not contain SrO, and / or BaO, and / or CaO, and / or ZnO, and / or PbO, and / or As 2 O 3 Does not contain and / or TiO 2 Does not include, and / or B 2 O 3 Does not include and / or Ln 2 O 3 Does not include F, and / or does not include Ta 2 O 5 A microcrystalline glass according to any one of claims 16 to 20, which does not contain the above.

26. The microcrystalline glass according to any one of claims 16 to 20, wherein the crystalline phase of the microcrystalline glass comprises lithium monosilicate and / or lithium phosphate.

27. The microcrystalline glass according to any one of claims 16 to 20, wherein the crystalline phase of the microcrystalline glass mainly contains lithium monosilicate, the weight percentage of lithium monosilicate is higher than that of other crystalline phases, and lithium monosilicate accounts for 10 to 63.5% of the microcrystalline glass.

28. The microcrystalline glass according to any one of claims 16 to 20, wherein the microcrystalline glass contains a lithium phosphate crystalline phase, and the weight percentage of the lithium phosphate crystalline phase in the microcrystalline glass is 3 to 15%.

29. The microcrystalline glass has a crystallinity of 50% or more, and / or a grain size of 50 nm or less, and / or a coefficient of thermal expansion of 75 to 95 × 10⁻⁶. -7 The temperature is / K, and / or the refractive index is 1.5700 to 1.5800, and / or the height of the ball drop test is 1000 mm or more, and / or the Vickers hardness is 650 kgf / mm². 2 The microcrystalline glass according to any one of claims 16 to 20, wherein the cloudiness of the microcrystalline glass with a thickness of 1 mm is 0.15% or less, and / or the average transmittance at a wavelength of 400 to 800 nm in the microcrystalline glass with a thickness of 1 mm is 89% or more, and / or the average transmittance at a wavelength of 550 nm in the microcrystalline glass with a thickness of 1 mm is 91% or more, and / or the average optical |B| value at 400 to 800 nm in the microcrystalline glass with a thickness of 1 mm is 0.6 or less.

30. Microcrystalline glass according to any one of claims 16 to 20, further comprising the following components by weight: NiO: 0 to 4%, and / or Ni 2 O 3 : 0-4%, and / or CoO: 0-2%, and / or Co 2 O 3 : 0-2%, and / or Fe 2 O 3 : 0-7%, and / or MnO 2 : 0-4%, and / or Er 2 O 3 : 0-8%, and / or Nd 2 O 3 : 0-8%, and / or Cu 2 O: 0-4%, and / or Pr 2 O 3 : 0-8%, and / or CeO 2 : 0-4%.

31. Matrix glass containing the following components by weight: SiO 2 : 45-70%, Al 2 O 3 : 8-18%, Li 2 O: 11-25%, ZrO 2 : 5-15%, P 2 O 5 : 2-10%, Y 2 O 3 : more than 0 and less than or equal to 8%, Na₂O: 1-6%, TiO₂: 0-1.5%, The ratio of Y₂O₃ / ZrO₂ is 0.25–0.45, and the ratio of Na₂O / Y₂O₃ is 0.5–0.

8.

32. The matrix glass according to claim 31, further comprising the following components by weight: K 2 O: 0-5%, and / or MgO: 0-2%, and / or ZnO: 0-2%, and / or SrO: 0-5%, and / or BaO: 0-5%, and / or CaO: 0-5%, and / or B 2 O 3 : 0-5%, and / or Ln 2 O 3 : 0-5%, and / or clarifying agent: 0-2%, and the Ln 2 O 3 La 2 O 3 , Gd 2 O 3 Yb 2 O 3 It is one or more of the following, and the clarifying agent is Sb 2 O 3 SnO 2 SnO, CeO 2 It is one or more of the following: F, Cl, and Br.

33. The matrix glass according to claim 31 or 32, wherein the aforementioned components are expressed in weight percent, and the content of each component satisfies one or more of the following three conditions: 1)(Li 2 O+ZrO 2 +P 2 O 5 ) / Y 2 O 3 The range is 9.0 to 12.0; 2) Al 2 O 3 / ( Li 2 O+ZrO 2 +P 2 O 5 ) is between 0.25 and 0.45; 3) Y 2 O 3 / (Al 2 O 3 +SiO 2 The values ​​are between 0.03 and 0.

06.

34. The matrix glass according to claim 31 or 32, comprising the following components by weight: SiO 2 : 53-63%, and / or Al 2 O 3 : 8-12%, and / or Li 2 O: 14–21%, and / or ZrO 2 : 7-12%, and / or P 2 O 5 : 4-8%, and / or K 2 O: 0-2%, and / or MgO: 0-1%, and / or ZnO: 0-1%, and / or Na 2 O: 1.5–4%, and / or Y 2 O 3 : 2-6%, and / or SrO: 0-1%, and / or BaO: 0-1%, and / or CaO: 0-1%, and / or TiO 2 : 0-1%, and / or B 2 O 3 : 0-2%, and / or Ln 2 O 3 : 0-3%, and / or clarifying agent: 0-0.5%, and the Ln 2 O 3 La 2 O 3 , Gd 2 O 3 Yb 2 O 3 It is one or more of the following, and the clarifying agent is Sb 2 O 3 SnO 2 SnO, CeO 2 It is one or more of the following: F, Cl, and Br.

35. The aforementioned components do not contain SrO, and / or BaO, and / or CaO, and / or ZnO, and / or PbO, and / or As 2 O 3 Does not contain and / or TiO 2 Does not include, and / or B 2 O 3 Does not include and / or Ln 2 O 3 Does not include F, and / or does not include Ta 2 O 5 The matrix glass according to claim 31 or 32, which does not contain the matrix glass.

36. The thermal expansion coefficient of the matrix glass is 50 × 10 -7 / K~70×10 -7 The matrix glass according to claim 31 or 32, wherein the matrix glass is / K and / or the refractive index of the matrix glass is 1.5600 to 1.5700.

37. The matrix glass according to claim 31 or 32, further comprising the following components by weight: NiO: 0-4%, and / or Ni 2 O 3 : 0-4%, and / or CoO: 0-2%, and / or Co 2 O 3 : 0-2%, and / or Fe 2 O 3 : 0-7%, and / or MnO 2 : 0-4%, and / or Er 2 O 3 : 0-8%, and / or Nd 2 O 3 : 0-8%, and / or Cu 2 O: 0-4%, and / or Pr 2 O 3 : 0-8%, and / or CeO 2 : 0-4%.

38. A glass lid plate comprising a microcrystalline glass product according to any one of claims 1 to 15, and / or microcrystalline glass according to any one of claims 16 to 30, and / or matrix glass according to any one of claims 31 to 37.

39. A glass element comprising a microcrystalline glass product according to any one of claims 1 to 15, and / or a microcrystalline glass according to any one of claims 16 to 30, and / or a matrix glass according to any one of claims 31 to 37.

40. A display device comprising a microcrystalline glass product according to any one of claims 1 to 15, and / or a microcrystalline glass according to any one of claims 16 to 30, and / or a matrix glass according to any one of claims 31 to 37, and / or a glass cover plate according to claim 38, and / or a glass element according to claim 39.

41. Electronic device comprising a microcrystalline glass product according to any one of claims 1 to 15, and / or a microcrystalline glass according to any one of claims 16 to 30, and / or a matrix glass according to any one of claims 31 to 37, and / or a glass cover plate according to claim 38, and / or a glass element according to claim 39.

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