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CN-122010416-A - Microcrystalline glass and forming method thereof, microcrystalline glass product and electronic equipment

CN122010416ACN 122010416 ACN122010416 ACN 122010416ACN-122010416-A

Abstract

The embodiment of the application relates to the technical field of glass ceramics, in particular to glass ceramics, a forming method thereof, a glass ceramics product and electronic equipment. The microcrystalline glass comprises a plurality of grooves and a plurality of convex parts, wherein the convex parts are formed in the areas between any two adjacent grooves, and the grooves are formed in the areas between any two adjacent convex parts. The surface of the convex portion is a smooth surface, and the arithmetic average roughness of the surface of the convex portion is less than or equal to 1.5nm. The haze of the glass ceramics is less than or equal to 1 percent, the transmittance of the glass ceramics to light with the wavelength of 550nm is more than or equal to 89 percent, and the mass ratio of the crystal phase of the glass ceramics in the glass ceramics is more than or equal to 30 percent. The surface of the convex part is smooth and has smaller arithmetic average roughness, so that the microcrystalline glass provided by the application has smaller haze and higher transmittance, is more transparent in vision, has good visual effect, has higher crystal phase content, can give consideration to good mechanical properties, and has wide application range.

Inventors

  • ZENG ZHOU
  • ZHANG HANG
  • HUANG YIHONG
  • XING CHONG
  • LI MING
  • GU FAN

Assignees

  • 华为技术有限公司

Dates

Publication Date
20260512
Application Date
20251016

Claims (20)

  1. 1. A glass ceramic (100) comprising a plurality of grooves (120) and a plurality of protrusions (110), wherein the protrusions (110) are formed in the region between any two adjacent grooves (120), and the grooves (120) are formed in the region between any two adjacent protrusions (110); the surface (111) of the convex portion (110) is a smooth surface, and the arithmetic average roughness of the surface (111) of the convex portion (110) is less than or equal to 1.5nm; The haze of the microcrystalline glass (100) is less than or equal to 1%, the transmittance of the microcrystalline glass (100) to light with the wavelength of 550nm is more than or equal to 89%, and the mass ratio of a crystal phase of the microcrystalline glass (100) in the microcrystalline glass (100) is more than or equal to 30%.
  2. 2. The glass-ceramic (100) according to claim 1, wherein the parameters of the glass-ceramic (100) satisfy at least one of the following: The arithmetic average roughness of the surface (111) of the convex portion (110) is preferably 0.5nm to 1nm, preferably 0.5nm to 0.7nm, preferably 0.3nm to 1.2nm; The haze of the glass ceramic (100) is preferably 0.18% to 0.32%, preferably 0.2% to 0.5%, preferably 0.5% to 0.6%, preferably 0.5% to 0.9%; the transmittance of the glass ceramics (100) to light with the wavelength of 550nm is preferably 89.5 to 91.5%, preferably 89.8 to 91.2%, preferably 90.2 to 91.5%, preferably 90.5 to 91.5%; the mass ratio of the crystal phase of the glass ceramics (100) in the glass ceramics (100) is preferably 30 to 40%, preferably 40 to 50%, preferably 75 to 80%, preferably 85 to 92%.
  3. 3. The glass-ceramic (100) according to claim 1 or 2, wherein the host crystal phase of the glass-ceramic (100) comprises at least one of lithium disilicate, petalite, lithium silicate, quartz, a quartz solid solution, spinel, nepheline, kaliopenite, cordierite, and zirconia.
  4. 4. A glass-ceramic (100) according to any one of claims 1 to 3, wherein the glass-ceramic (100) comprises the following components in mass percent: 5 to 15% of lithium oxide; 50% to 78% of silica; 4 to 15% of alumina; 1 to 5 percent of phosphorus pentoxide; 2 to 10% of zirconium dioxide; Sodium oxide 0 to 5%; Potassium oxide 0 to 5%; 0 to 5% of diboron trioxide; The rest components are 0 to 5 percent.
  5. 5. The glass-ceramic (100) of claim 4, wherein the glass-ceramic (100) comprises at least one of the following: the mass percentage of the lithium oxide is preferably 8% to 15%, more preferably 9% to 14%, more preferably 10% to 13%, further preferably 11% to 12%; The mass percentage of the silica is preferably 60% to 75%, more preferably 62% to 73%, more preferably 65% to 70%, further preferably 66% to 68%; The mass percentage of the alumina is preferably 4% to 12%, more preferably 4% to 10%, more preferably 4% to 8%, further preferably 4% to 7%; The mass percentage of the phosphorus pentoxide is preferably 1% to 4%, more preferably 1% to 3%, more preferably 1% to 2%, further preferably 1.2% to 1.5%; the mass percentage of the zirconium dioxide is preferably 2% to 9%, more preferably 3% to 8%, more preferably 4% to 8%, further preferably 4% to 7%; the mass percentage of the sodium oxide is preferably 0 to 4%, more preferably 0 to 3%, more preferably 0 to 2%, further preferably 0 to 1%; the potassium oxide is preferably 0 to 4% by mass, more preferably 0 to 3% by mass, more preferably 0 to 2% by mass or 0 to 1% by mass; The mass percentage of the diboron trioxide is preferably 0 to 4%, more preferably 0 to 3%, more preferably 0 to 2%, further preferably 0 to 1%; The mass percentage of the remaining components is preferably 0 to 4%, more preferably 0 to 3%, still more preferably 0 to 2%, still more preferably 0 to 1%.
  6. 6. The glass ceramic (100) according to claim 4 or 5, wherein the remaining components comprise titanium dioxide.
  7. 7. The glass-ceramic (100) according to any one of claims 1 to 6, wherein the maximum height roughness of the surface (111) of the protrusion (110) is less than 100nm.
  8. 8. The glass-ceramic (100) according to any one of claims 1 to 7, wherein the surface (121) of the groove (120) is a smooth face, and wherein the surface (121) of the groove (120) has an arithmetic average roughness of less than or equal to 1.5nm.
  9. 9. The glass-ceramic (100) of claim 8, wherein the maximum height roughness of the surface (121) of the trench (120) is less than 100nm.
  10. 10. The glass-ceramic (100) according to claim 8 or 9, wherein the glass-ceramic (100) has smooth and continuous light shadow under a point light source or a surface light source.
  11. 11. The glass-ceramic (100) according to any one of claims 1 to 10, wherein the glass-ceramic (100) has dimensions satisfying at least one of the following: -the ratio between the average width of the groove (120) and the depth of the groove (120) is 10 to 500 over the cross section of the groove (120), the cross section of the groove (120) being perpendicular to the direction of extension of the groove (120); The ratio between the average width of the grooves (120) and the average width of the protrusions (110) is 0.1 to 10; The depth of the trench (120) is 0.1 μm to 30 μm; the average width of the grooves (120) is greater than or equal to 10 μm; The average width of the convex portion (110) is greater than or equal to 10 [ mu ] m.
  12. 12. The glass-ceramic (100) according to any one of claims 1 to 11, wherein the glass-ceramic (100) has dimensions satisfying at least one of the following: The ratio between the average width of the groove (120) and the depth of the groove (120) is preferably 20 to 50, preferably 10 to 30, preferably 10 to 50, preferably 50 to 100, over the cross section of the groove (120), the cross section of the groove (120) being perpendicular to the direction of extension of the groove (120); the ratio between the average width of the grooves (120) and the average width of the protrusions (110) is preferably 1 to 5, preferably 5 to 7, preferably 7 to 9, preferably 7 to 10; The depth of the grooves (120) is preferably 1 μm to 5 μm, preferably 3 μm to 5 μm, preferably 4 μm to 10 μm, preferably 10 μm to 20 μm; the average width of the grooves (120) is preferably 10 μm to 50 μm, preferably 50 μm to 150 μm, preferably 100 μm to 200 μm, preferably 100 μm to 300 μm; the average width of the convex portion (110) is preferably 10 μm to 50 μm, preferably 50 μm to 150 μm, preferably 100 μm to 200 μm, preferably 100 μm to 300 μm.
  13. 13. The glass-ceramic (100) according to any one of claims 1 to 12, wherein the surface (111) of the convex portion (110) comprises a first side surface (1111) and a second side surface (1112), the first side surface (1111) and the second side surface (1112) being disposed opposite to each other in a width direction of the convex portion (110), and a distance between the first side surface (1111) and the second side surface (1112) gradually decreases in a protruding direction of the convex portion (110).
  14. 14. The glass ceramic (100) according to claim 13, wherein the first side surface (1111) and the second side surface (1112) are inclined surfaces inclined with respect to a protruding direction of the protruding portion (110), respectively.
  15. 15. Glass-ceramic (100) according to claim 14, characterized in that the angle (α1) between the first side (1111) and the direction of projection of the projection (110) is 5 ° to 45 °, and/or the angle (α2) between the second side (1112) and the direction of projection of the projection (110) is 5 ° to 45 °.
  16. 16. The glass ceramic (100) according to claim 14 or 15, wherein the surface (111) of the protrusion (110) comprises a top surface (1113), the top surface (1113) connects the first side surface (1111) and the second side surface (1112), and the top surface (1113) is a curved surface protruding along the protruding direction of the protrusion (110).
  17. 17. The glass-ceramic (100) according to claim 16, wherein the surface (121) of the groove (120) comprises a bottom surface (1211), the bottom surface (1211) connecting a first side (1111) of one protrusion (110) adjacent to the groove (120) and a second side (1112) of another protrusion (110) adjacent to the groove (120), the bottom surface (1211) being a curved surface protruding in a direction opposite to a protruding direction of the protrusion (110).
  18. 18. The glass-ceramic (100) of any one of claims 1 to 17, wherein the groove (120) is a linear groove, a curvilinear groove, or an annular groove.
  19. 19. The glass-ceramic (100) according to any one of claims 1 to 18, wherein the arithmetic mean roughness of the surface (111) of the protrusions (110) is measured with an atomic force microscope, the length and width of the test area being respectively less than or equal to 1 μιη.
  20. 20. The glass-ceramic (100) according to any one of claims 1 to 19, wherein the haze and the transmittance of the glass-ceramic (100) are measured using a chromaticity tester, and the test light source is a D65 light source.

Description

Microcrystalline glass and forming method thereof, microcrystalline glass product and electronic equipment Technical Field The embodiment of the application relates to the technical field of glass ceramics, in particular to glass ceramics, a forming method thereof, a glass ceramics product and electronic equipment. Background By performing a specific heat treatment on the base glass (or "ordinary glass"), a glass-ceramic can be obtained, which includes a crystal phase and a glass phase (or "amorphous phase"), which makes the glass-ceramic have more excellent mechanical properties, and therefore, the glass-ceramic is widely used in electronic devices such as mobile phones, watches, and flat panels. At present, glass ceramics can be etched to form a micro-scale concave-convex structure on the glass ceramics, and the concave-convex structure is a fine texture, so that the glass ceramics has a decorative effect and simultaneously gives consideration to special light and shadow effects and touch feeling. However, the prior microcrystalline glass with textures has the problems of light shadow pits, break points and the like, and has poor visual effect. Disclosure of Invention In order to solve the above problems, the present application provides an electronic device, and the following description of the electronic device may combine the following advantages. In a first aspect, an embodiment of the present application provides a glass ceramic, including a plurality of grooves and a plurality of protrusions, wherein a region between any two adjacent grooves forms a protrusion, and a region between any two adjacent protrusions forms a groove. The surface of the convex portion is a smooth surface, and the arithmetic average roughness of the surface of the convex portion is less than or equal to 1.5nm. The haze of the glass ceramics is less than or equal to 1 percent, the transmittance of the glass ceramics to light with the wavelength of 550nm is more than or equal to 89 percent, and the mass ratio of the crystal phase of the glass ceramics in the glass ceramics is more than or equal to 30 percent. The surface of the convex part is a smooth surface, and the surface of the convex part has smaller arithmetic average roughness, so that the microcrystalline glass provided by the application has smaller haze and higher transmittance, thereby enabling the microcrystalline glass to be more transparent in vision and further improving the visual effect of the microcrystalline glass. And the microcrystalline glass has higher crystal phase content, can give consideration to good mechanical properties, and has wider application range. In one possible implementation of the first aspect, the parameter of the glass-ceramic is at least one of an arithmetic average roughness of the surface of the convex portion of preferably 0.5nm to 1nm, preferably 0.5nm to 0.7nm, preferably 0.3nm to 0.7nm or preferably 0.3nm to 1.2nm, a haze of the glass-ceramic of preferably 0.18% to 0.32%, preferably 0.2% to 0.5%, preferably 0.5% to 0.6%, preferably 0.5% to 0.9%, a transmittance of the glass-ceramic for light having a wavelength of 550nm of preferably 89.5% to 91.5%, preferably 89.8% to 91.2%, preferably 90.2% to 91.5%, preferably 90.5% to 91.5%, and a mass ratio of a crystalline phase of the glass-ceramic in the glass-ceramic of preferably 30% to 40%, preferably 40% to 50%, preferably 75% to 80%, preferably 85%. According to the embodiment of the application, the arithmetic average roughness of the surface of the convex part is preferably 0.5nm to 1nm, preferably 0.5nm to 0.7nm, preferably 0.3nm to 0.7nm or preferably 0.3nm to 1.2nm, so that the surface of the convex part can be more smooth and round, thereby enabling the microcrystalline glass to have good visual effect. The haze of the glass ceramics is preferably 0.18% to 0.32%, preferably 0.2% to 0.5%, preferably 0.5% to 0.6%, preferably 0.5% to 0.9%. Therefore, the microcrystalline glass has better transparent degree and good visual effect. The transmittance of the glass ceramics for light having a wavelength of 550nm is preferably 89.5% to 91.5%, preferably 89.8% to 91.2%, preferably 90.2% to 91.5%, preferably 90.5% to 91.5%. Therefore, the glass ceramics are more transparent in vision and have good visual effect. The mass ratio of the crystal phase of the glass ceramics in the glass ceramics is preferably 30 to 40%, preferably 40 to 50%, preferably 75 to 80%, preferably 85 to 92%. Therefore, the microcrystalline glass can have good mechanical properties and has a wider application range. In one possible implementation of the first aspect described above, the host crystal phase of the glass-ceramic includes at least one of lithium disilicate, petalite, lithium silicate, quartz, a quartz solid solution, spinel, nepheline, kalsilite, cordierite, and zirconia. In one possible implementation of the first aspect, the glass ceramic includes, by mass, 5% to 15% of lithium oxide, 50% to 78% of sil