WO2016191904A1

WO2016191904A1 - Method for drawing pattern on glass

Info

Publication number: WO2016191904A1
Application number: PCT/CN2015/080202
Authority: WO
Inventors: 林耿; 盛秋春; 王晓飞; 黄义宏
Original assignee: 华为技术有限公司
Priority date: 2015-05-29
Filing date: 2015-05-29
Publication date: 2016-12-08
Also published as: CN107614455A

Abstract

A method for drawing a pattern on a glass, comprising: placing the glass in molten salt for a salt bath to form an ion layer on a surface of the glass, the molten salt comprising a heavy metal compound; and focusing a laser beam on the ion layer on the surface of the glass to draw a pattern. The method for drawing the pattern on the glass does not affect the strength of the glass.

Description

Method of drawing a pattern on glass

Technical field

The invention relates to the technical field of glass processing technology, in particular to a method for drawing a pattern on glass.

Background technique

In the traditional technology, the glass material is the preferred material for the touch screen cover of the terminal device because of its good light transmittance, impact resistance, scratch resistance, lightness, smoothness, and environmental protection. In the terminal consumer electronics industry, visual appearance may be the determining factor in determining whether a consumer buys one product rather than another. Thus, for the glass cover on the top of the terminal device, a surface appearance treatment process is usually also required, and a pattern or marking is drawn on the cover glass.

The existing scheme of engraving or marking on the surface of the glass is a laser engraving scheme, which can perform two-dimensional or three-dimensional engraving or marking on the surface and inside of the glass, such as processing the surface of the glass with a CO ₂ laser, such as cutting and hitting. Holes and marks are well known in practice. Usually, using a nanosecond laser, focusing into the interior of the glass, the laser intensity at the focus is higher than the threshold of glass damage, which can cause the glass to be thermally detonated instantaneously, resulting in microcracks on the order of micrometers to millimeters, which are white due to the scattering of light by microcracks. . However, the microcracks inside the glass also cause a significant decrease in the strength of the tempered glass, which is not suitable for the protective cover of the terminal equipment.

In order to avoid the problem of the significant decrease of the strength of the tempered glass caused by laser laser engraving, the existing improved glass color laser engraving technology mainly uses a laser with a pulse width of nanometer to femtosecond to focus on the interior of a specific component glass. The whole is doped with specific ions such as metal silver ion Ag ⁺ or gold ion Au ³⁺ or copper ion Cu ⁺ or palladium ion Pd ⁺ . By inducing a nonlinear reaction between the laser and the glass at the focus of the focused laser, color center control or nanocrystal precipitation is achieved inside the glass, for example, such that Au ³⁺ captures photoelectrons and is reduced to Au atoms (Au ³⁺ + e→Au). Then, heat treatment is performed at a higher temperature, which is that Au atoms are agglomerated by thermal migration to form nanocrystals. Since these nanocrystals have surface plasmon absorption in the visible wavelength range, a color pattern is exhibited. The color center is generated by the photoelectron generated by the interaction between the laser focus and the glass being captured by the glass structure. The precipitation of the nanocrystals inside the glass or the control of the color center does not cause microcracks inside the glass, and the influence on the strength of the glass is small and negligible.

However, the glass in this technical solution requires a specific material composition, such as a phosphate glass or a silicate glass of a specific composition, and it is required that the glass is doped with Ag+ ions or Au3+ ions or Cu+ ions or Pd+ ions as a whole. The commonly used terminal equipment cover glass, for example, Corning Gorilla Glass, Asahi Glass, Schott Glass, etc., is usually a reinforced aluminosilicate glass, which needs to ensure high surface compressive stress and surface pressure. The depth of the layer, that is to say, the improved glass color laser engraving technique described above has special requirements for glass and is not suitable for existing tempered glass. The existing glass as the protective cover of the terminal device can still only use the traditional glass color laser engraving technology, so that the intensity of the glass cover after drawing the pattern is low.

Summary of the invention

Based on this, in order to solve the technical problem of easily reducing the strength of the glass caused by the method of drawing a pattern on glass in the above-described conventional art, a method of drawing a pattern on glass is proposed.

A first aspect of an embodiment of the present invention discloses a method for drawing a pattern on a glass, comprising:

Putting a glass into a molten salt to perform a salt bath, forming an ion layer on the surface of the glass, wherein the molten salt includes a heavy metal compound;

A pattern is drawn by focusing the laser beam into an ion layer of the glass surface.

With reference to the implementation of the first aspect of the embodiment of the present invention, in a first possible implementation manner of the first aspect of the embodiment of the present invention, the glass is subjected to a salt bath treatment after a salt molten salt for glass strengthening. Chemically strengthened glass.

With reference to the first aspect of the embodiments of the present invention and the first possible implementation manner of the first aspect, in the second possible implementation manner of the first aspect of the embodiments of the present invention, the molten salt further includes a glass fortification Salt molten salt.

With reference to the first aspect of the embodiments of the present invention and the second possible implementation of the first aspect, in a third possible implementation manner of the first aspect of the embodiment of the present invention, the salt molten salt for glass strengthening At least one of Li ⁺ , Na ⁺ and K ^{+ is} included.

In a fourth possible implementation manner of the first aspect of the first aspect of the present invention, The cation includes at least one of Ag ⁺ , Au ³⁺ , Cu ²⁺ , Pd ^{2+ ,} and Pt ⁴⁺ .

With reference to the first aspect of the first embodiment of the present invention and the first to fourth possible implementation manners of the first aspect, in the fifth possible implementation manner of the first aspect of the embodiment of the present invention, the temperature of the salt bath The temperature of the salt bath is from 10 minutes to 360 minutes from 80 ° C to 500 ° C.

With reference to the first aspect of the first embodiment of the present invention and the first to fifth possible implementation manners of the first aspect, in the sixth possible implementation manner of the first aspect of the embodiment, the molten salt includes At least one of nitrate, chloride, sulfate, phosphate, and oxide.

With reference to the first aspect of the embodiments of the present invention and any one of the first to the sixth possible implementation manners of the first aspect, in a seventh possible implementation manner of the first aspect of the embodiments of the present invention, the glass is aluminum silicon Acid salt glass.

With reference to the first aspect of the first embodiment of the present invention and the first to the seventh possible implementation manners of the first aspect, in the eighth possible implementation manner of the first aspect of the embodiment of the present invention, the ion of the glass surface The thickness of the layer is from 10 μm to 100 μm.

With reference to the first aspect of the embodiments of the present invention and any one of the first to the eighth possible implementation manners of the first aspect, in the ninth possible implementation manner of the first aspect of the embodiments of the present invention, the pulse of the laser beam The width is from 10fs to 200ps, the wavelength is from 780nm to 820nm, and the repetition frequency is from 100kHz to 1000kHz.

With reference to the first aspect of the embodiments of the present invention and the ninth possible implementation manner of the first aspect, in the tenth possible implementation manner of the first aspect of the embodiments of the present invention, the molten salt comprises silver nitrate AgNO ₃ molten salt And a potassium nitrate molten salt for glass strengthening, and the weight ratio of the silver nitrate AgNO ₃ in the molten salt is 0.5% to 20%; the temperature of the salt bath is 410 ° C to 430 ° C, the salt bath The duration is from 4 hours to 6 hours; the laser beam has a pulse width of 10 fs to 100 ps, a wavelength of 780 nm to 820 nm, and a repetition frequency of 100 kHz to 1000 kHz.

With reference to the first aspect of the embodiments of the present invention and the ninth possible implementation manner of the first aspect, in the eleventh possible implementation manner of the first aspect of the embodiments of the present invention, the glass is used for glass strengthening The chemically strengthened glass after the salt molten salt is subjected to a salt bath treatment; the molten salt is a silver nitrate AgNO ₃ molten salt; the salt bath has a temperature of 410 ° C to 430 ° C, and the salt bath has a duration of 4 hours to 6 The laser beam has a pulse width of 10 fs to 100 ps, a wavelength of 780 nm to 820 nm, and a repetition frequency of 100 kHz to 1000 kHz.

With reference to the first aspect of the embodiments of the present invention and the ninth possible implementation manner of the first aspect, in the twelfth possible implementation manner of the first aspect of the embodiment, the molten salt comprises copper chloride CuCl ₂ a molten salt and a potassium nitrate molten salt for glass strengthening, wherein the weight ratio of the CuCl ₂ in the molten salt is from 0.5% to 10%; the temperature of the salt bath is from 410 ° C to 430 ° C, the salt bath The duration is from 0.5 hours to 6 hours; the laser beam has a pulse width of 10 fs to 200 ps, a wavelength of 780 to 820 nm, and a repetition frequency of 100 kHz to 1000 kHz.

With reference to the first aspect of the embodiments of the present invention and the ninth possible implementation manner of the first aspect, in the thirteenth possible implementation manner of the first aspect of the embodiment of the present invention, the glass is used for glass strengthening a chemically strengthened glass after the salt molten salt is subjected to a salt bath treatment; the molten salt is a copper chloride CuCl ₂ molten salt; the salt bath has a temperature of 410 ° C to 430 ° C, and the salt bath has a duration of 0.5 hours to 6 hours; the laser beam has a pulse width of 10 fs to 200 ps, a wavelength of 780 to 820 nm, and a repetition frequency of 100 kHz to 1000 kHz.

With reference to the first aspect of the embodiments of the present invention and the ninth possible implementation manner of the first aspect, in the fourteenth possible implementation manner of the first aspect of the embodiments of the present invention, the molten salt comprises palladium sulfate PdSO ₄ melting a salt and a potassium nitrate molten salt for glass strengthening; the salt bath has a temperature of 300 ° C to 450 ° C, the salt bath has a duration of 0.5 hours to 6 hours; and the laser beam has a pulse width of 10 fs to 100 ps, The wavelength is 780 to 820 nm and the repetition frequency is 100 kHz to 1000 kHz.

With reference to the first aspect of the embodiments of the present invention and the ninth possible implementation manner of the first aspect, in a fifteenth possible implementation manner of the first aspect of the embodiments of the present invention, the glass is used for glass strengthening a chemically strengthened glass obtained by subjecting a salt molten salt to salt bath treatment; the molten salt is a palladium sulfate PdSO ₄ molten salt; the salt bath has a temperature of 300 ° C to 450 ° C, and the salt bath has a duration of 0.5 hours to 6 The laser beam has a pulse width of 10 fs to 100 ps, a wavelength of 780 to 820 nm, and a repetition frequency of 100 kHz to 1000 kHz.

With reference to the first aspect of the embodiments of the present invention and the ninth possible implementation manner of the first aspect, in the sixteenth possible implementation manner of the first aspect of the embodiments of the present invention, the molten salt comprises silver nitrate AgNO ₃ melting a salt, a copper chloride CuCl ₂ molten salt, and a potassium nitrate molten salt for glass strengthening; the salt bath has a temperature of 400 ° C to 430 ° C, and the salt bath has a duration of 1 hour to 6 hours; the laser beam The pulse width is 10fs to 10ps, the wavelength is 780nm to 820nm, and the repetition frequency is 100kHz.

With reference to the first aspect of the embodiments of the present invention and the ninth possible implementation manner of the first aspect, in the seventeenth possible implementation manner of the first aspect of the embodiments of the present invention, the molten salt comprises copper chloride CuCl ₂ a molten salt, a palladium sulfate PdSO ₄ molten salt, and a potassium nitrate molten salt for glass strengthening; the salt bath has a temperature of 400 ° C to 430 ° C, and the salt bath has a duration of 1 hour to 6 hours; the laser beam The pulse width is from 10 fs to 200 ps, the wavelength is from 780 nm to 820 nm, and the repetition frequency is from 100 kHz to 1000 kHz.

With reference to the first aspect of the embodiments of the present invention and any one of the first to the eighth possible implementation manners of the first aspect, in the eighteenth possible implementation manner of the first aspect of the embodiments of the present invention, the laser beam The pulse width is 10fs to 200ps, the wavelength is 780nm to 820nm, and the repetition frequency is 1kHz;

After the laser beam is focused onto the ion layer of the glass surface to draw a pattern, the method further includes:

The glass is subjected to a heat treatment at a temperature of from 350 ° C to 500 ° C.

With reference to the first aspect of the embodiments of the present invention and the eighteen possible implementation manners of the first aspect, in the nineteenth possible implementation manner of the first aspect of the embodiments of the present invention, the molten salt comprises silver chloride AgCl melting a salt and a potassium nitrate molten salt for glass strengthening, wherein the weight ratio of the AgCl in the molten salt is from 0.5% to 20%; the temperature of the salt bath is from 410 ° C to 500 ° C, and the length of the salt bath is 4 hours to 6 hours; the laser beam has a pulse width of 10 fs to 100 ps, a wavelength of 780 nm to 820 nm, a repetition frequency of 1 kHz, a heat treatment temperature of 400 ° C, and a heat treatment time of 30 minutes to 120 minutes.

With reference to the first aspect of the embodiments of the present invention and the eighteen possible implementation manners of the first aspect, in the twentieth possible implementation manner of the first aspect of the embodiments of the present invention, the glass is used for glass strengthening The salt-melting salt is subjected to a salt bath treatment to strengthen the chemically strengthened glass; the molten salt is a silver chloride AgCl molten salt; the salt bath has a temperature of 410 ° C to 500 ° C, and the salt bath has a duration of 4 hours to 6 hours; the laser beam has a pulse width of 10 fs to 100 ps, a wavelength of 780 to 820 nm, a repetition frequency of 1 kHz, a heat treatment temperature of 400 ° C, and a heat treatment time of 30 minutes to 120 minutes.

With reference to the first aspect of the embodiments of the present invention and the eighteen possible implementations of the first aspect, in the twenty-first possible implementation manner of the first aspect of the embodiments of the present invention, the molten salt comprises palladium sulfate PdSO ₄ a molten salt and a potassium nitrate molten salt for glass strengthening, wherein the weight ratio of the palladium sulfate PdSO ₄ in the molten salt is from 0.5% to 20%; the temperature of the salt bath is from 300 ° C to 450 ° C, the salt The duration of the bath is from 0.5 hours to 6 hours; the pulse width of the laser beam is from 10 fs to 100 ps, the wavelength is from 780 nm to 820 nm, and the repetition frequency is 1 kHz; the temperature of the heat treatment is from 350 ° C to 450 ° C, the duration of the heat treatment It is 30 minutes to 120 minutes.

With reference to the first aspect of the embodiments of the present invention and the eighteen possible implementation manners of the first aspect, in the twenty-second possible implementation manner of the first aspect of the embodiments of the present invention, the glass is used for glass strengthening a chemically strengthened glass after salt bath treatment; the molten salt is palladium sulfate PdSO ₄ molten salt; the salt bath has a temperature of 300 ° C to 450 ° C, and the salt bath has a duration of 0.5 hours to 6 hours; the laser beam has a pulse width of 10 fs to 100 ps, a wavelength of 780 nm to 820 nm, a repetition frequency of 1 kHz, a heat treatment temperature of 350 ° C to 450 ° C, and a heat treatment time of 30 minutes to 120 minutes.

With reference to the first aspect of the embodiments of the present invention and the eighteen possible implementation manners of the first aspect, in the twenty-third possible implementation manners of the first aspect of the embodiments of the present invention, the glass is used for glass strengthening a chemically strengthened glass after salt bath treatment; the molten salt is a gold oxide Au ₂ O ₃ molten salt; the salt bath has a temperature of 300 ° C to 450 ° C, and the salt bath has a duration of 0.5 Hours to 6 hours; the laser beam has a pulse width of 10 fs to 100 ps, a wavelength of 780 nm to 820 nm, a repetition frequency of 1 kHz; a temperature of the heat treatment of 350 ° C to 500 ° C, and a heat treatment time of 30 minutes to 120 hours minute.

With reference to the first aspect of the embodiments of the present invention and the eighteen possible implementation manners of the first aspect, in the twenty-fourth possible implementation manner of the first aspect of the embodiments of the present invention, the glass is used for glass strengthening a chemically strengthened glass after salt bath treatment; the molten salt is a platinum oxide PtO ₂ molten salt; the salt bath has a temperature of 450 ° C to 500 ° C, and the salt bath has a duration of 0.5 hours to 6 hours; the laser beam has a pulse width of 10 fs to 100 ps, a wavelength of 780 nm to 820 nm, a repetition frequency of 1 kHz, a heat treatment temperature of 450 ° C to 550 ° C, and a heat treatment time of 30 minutes to 120 minutes.

With reference to the first aspect of the embodiments of the present invention and the eighteen possible implementation manners of the first aspect, in the twenty-fifth possible implementation manner of the first aspect of the embodiments of the present invention, the molten salt comprises silver nitrate AgNO ₃ a molten salt, a gold oxide Au ₂ O ₃ molten salt, and a potassium nitrate molten salt for glass strengthening; the salt bath has a temperature of 400 ° C to 430 ° C, and the salt bath has a duration of 1 hour to 6 hours; The laser beam has a pulse width of 10fs to 20ps, a wavelength of 780nm to 820nm, and a repetition frequency of 1 kHz;

The drawing of the pattern in the ion layer that focuses the laser beam onto the surface of the glass comprises:

First drawing a pattern in the ion layer that focuses the laser beam onto the surface of the glass and drawing a pattern in the ion layer that focuses the laser beam onto the surface of the glass a second time;

The heat treatment of the glass includes:

The glass is heat treated for the first time after the pattern is drawn in the ion layer of the glass surface for the first time, and the laser beam is focused to the ion layer of the glass surface for the second time. Heat treating the glass a second time after drawing the pattern;

The temperature at which the glass is heat-treated for the first time is 450 ° C, the duration of the heat treatment is 30 minutes; the temperature at which the glass is heat-treated for the second time is 400 ° C, and the duration of the heat treatment is 30 minute.

With reference to the first aspect of the embodiments of the present invention and the eighteen possible implementation manners of the first aspect, in the twenty-sixth possible implementation manner of the first aspect of the embodiments of the present invention, the molten salt comprises silver nitrate AgNO ₃ a molten salt, a palladium sulfate PdSO ₄ molten salt, and a potassium nitrate molten salt for glass strengthening; the salt bath has a temperature of 400 ° C to 430 ° C, and the salt bath has a duration of 1 hour to 6 hours; the laser beam Pulse width from 10fs to 20ps, wavelength from 780nm to 820nm, repetition rate of 1kHz;

The heat treatment of the glass includes:

Further, in order to solve the technical problem of easily reducing the strength of the glass caused by the method of drawing a pattern on the glass in the above-described conventional art, a glass cover is proposed.

A second aspect of the embodiments of the present invention discloses a glass cover having a glass in combination with the first aspect of the foregoing and the first to twenty-sixth possible implementations of the first aspect. A pattern drawn by the method of drawing a pattern.

Implementation of the embodiments of the present invention will have the following beneficial effects:

In the above method for drawing a pattern on glass, after the aluminosilicate glass is placed in a molten salt containing a heavy metal compound, heavy metal cations in the molten salt such as Ag ⁺ , Au ³⁺ , Cu ²⁺ , Pd ²⁺ , Pt ⁴⁺ and so on will ion exchange with the glass surface, whether the glass is chemically strengthened or aluminized silicate glass before strengthening, and the surface of the glass will be melted with Li ⁺ ions, Na ⁺ ions or K ⁺ ions. The cations such as Ag ⁺ , Au ³⁺ , Cu ²⁺ , Pd ²⁺ , and Pt ⁴⁺ in the salt are ion-exchanged to form an ion-exchanged ion layer on the surface layer of the glass. The laser beam is focused inside a glass of a specific composition which is doped with a specific ion such as metal silver ion Ag ⁺ or gold ion Au ³⁺ or copper ion Cu ²⁺ or palladium ion Pd ⁴⁺ . By inducing a nonlinear reaction between the laser and the glass at the focus of the focused laser, color center control or nanocrystal precipitation is performed inside the glass, for example, such that Au ³⁺ captures photoelectrons and is reduced to Au atoms (Au3 ⁺ +e→Au). The heat treatment is then carried out at a higher temperature, and the Au atoms are agglomerated by thermal migration to form nanocrystals. Since these nanocrystals have surface plasmon absorption in the visible wavelength range, they exhibit a colored pattern. The color center is generated by the photoelectron generated by the interaction between the laser focus and the glass being captured by the glass structure. The precipitation of the nanocrystals inside the glass or the control of the color center does not cause microcracks inside the glass, and the influence on the strength of the glass is negligible.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any creative work.

among them:

1 is a flow chart of a method for drawing a pattern on glass according to an embodiment of the present invention;

2 is a schematic view showing an ion exchange process of a molten salt of a glass and a heavy metal compound in an embodiment of the present invention;

FIG. 3 is a schematic diagram of an operation of laser focus drawing in an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, but not all embodiments. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

In order to solve the technical problem of easily reducing the strength of the glass caused by the method for drawing a pattern on the glass in the above-mentioned conventional art, a method of drawing a pattern on the glass is proposed, as shown in FIG. 1, including:

Step S102, placing the glass in a molten salt to perform a salt bath, forming an ion layer on the surface of the glass, and melting the salt It includes heavy metal compounds.

In the present embodiment, the glass in which the salt bath is placed in the molten salt may be a chemically strengthened glass which is subjected to a salt bath treatment by a salt molten salt for glass strengthening. For example, the chemical tempered glass produced by the manufacturer of the cover glass on the existing terminal display has Corning Gorilla, Asahi Glass, Soda-lime/Dragontrail, Schott Xensation, Electric Glass, Dinorex, Xuhong Panda, Chengdu Optoelectronics, Luobo or In the case of CSG, etc., the above-mentioned chemically strengthened glass is usually produced by placing an aluminosilicate glass in a molten salt of a salt for glass strengthening. The salt molten salt for glass strengthening may contain at least one of Li ⁺ ions, Na ⁺ ions, and K ⁺ ions, for example, usually a potassium nitrate molten salt, so that Li ⁺ ions and K ⁺ ions in the molten salt can Ion exchange with the Na ⁺ ions on the surface of the aluminosilicate glass to form a compressive stress layer on the surface of the aluminosilicate glass.

The compressive stress layer greatly enhances the ability of the chemically strengthened glass to resist bending. The use of chemically strengthened glass as the cover glass on the terminal display prevents deformation of the cover glass caused by a mobile terminal such as a mobile phone from falling from a height without causing the cover glass to be broken.

In the present embodiment, the glass in which the pattern is drawn is a chemically strengthened glass (that is, a finished glass which has been finished by chemically strengthened glass) after being subjected to a salt bath treatment using a salt molten salt for glass strengthening, and a molten salt in which the glass is placed It includes heavy metal compounds. Further, the cation in the heavy metal compound includes at least one of Ag ⁺ , Au ³⁺ , Cu ²⁺ , Pd ^{2+ ,} and Pt ⁴⁺ . Accordingly, the compound which provides the above cation in the molten salt may include at least one of a nitrate, a chloride, a sulfate, a phosphate, and an oxide. For example, the heavy metal compound in the molten salt may be silver nitrate AgNO ₃ , silver chloride AgCl, copper chloride CuCl ₂ , palladium sulfate PdSO ₄ , gold oxide Au ₂ O ₃ or platinum oxide PtO _{2 ,} etc., and may be included in the molten salt. A heavy metal compound or a mixture of a plurality of heavy metal compounds.

In yet another embodiment, the glass in which the salt bath is placed in the molten salt may also be an aluminosilicate glass that is not chemically strengthened, and the molten salt includes a salt molten salt for glass strengthening. That is, in the former embodiment, the chemically strengthened glass may be used as a raw material, and placed in a salt bath containing a heavy metal compound for ion exchange, and in this embodiment, the above is drawn on the glass. The patterning process can be carried out in synchronism with the process of chemically tempered glass, and the aluminosilicate glass which is not chemically strengthened can be used as a raw material to chemically strengthen the patterning process. In the present embodiment, the molten salt may include not only the above-mentioned heavy metal compounds such as silver nitrate AgNO ₃ , silver chloride AgCl, copper chloride CuCl ₂ , palladium sulfate PdSO ₄ , gold oxide Au ₂ O ₃ or platinum oxide PtO ₂ , but also Compounds including Li ⁺ ions, Na ⁺ ions, and K ⁺ ions, such as potassium nitrate, and the like, may be included.

As shown in FIG. 2, after the aluminosilicate glass is placed in a molten salt containing a heavy metal compound, heavy metal cations in the molten salt such as Ag ⁺ , Au ³⁺ , Cu ²⁺ , Pd ²⁺ , Pt ^{4+ ,} etc. Will ion exchange with the surface of the glass, whether the glass is chemically strengthened or aluminosilicate glass before strengthening, the Li ⁺ ion, Na ⁺ ion or K ⁺ ion of the glass surface will be in the molten salt The cations such as Ag ⁺ , Au ³⁺ , Cu ²⁺ , Pd ²⁺ , and Pt ⁴⁺ undergo ion exchange to form an ion-exchanged ion layer on the surface layer of the glass. Alternatively, the temperature of the salt bath is from 80 ° C to 500 ° C and the time of the salt bath is from 10 minutes to 360 minutes. The temperature of the salt bath can be adjusted depending on the cation in the molten salt of the salt bath. The thickness of the ion layer of the glass surface can be controlled to be 10 μm to 100 μm. The ion layer contains heavy metal cations after ion exchange, and the pattern is drawn by focusing the ion layer using a laser beam.

It should be noted that the type of heavy metal cation determines the color of the pattern to be drawn, and the length of the salt bath is determined by the concentration of the molten salt. However, if the salt bath is too long, the thickness of the ion layer will increase, and the specific gravity of the heavy metal cations in the ion layer will increase, which may cause discoloration of the glass used to draw the pattern. For example, if the ordinary aluminosilicate glass or the chemically strengthened aluminosilicate glass is placed in the salt bath of the silver nitrate AgNO ₃ molten salt for a long time, the glass as a whole will have a pale yellow color. If the salt bath time is short, the thickness of the ion layer is insufficient, or the specific gravity of the heavy metal cation in the ion layer is small, so that the drawn pattern is light in color, so the time of the salt bath is selected to be 10 minutes to 360 minutes.

Step S104, drawing a pattern by focusing the laser beam on the ion layer of the glass surface.

As shown in Figure 3, the motion of the laser can be controlled using a program to move the laser according to a preset pattern trajectory. The lens at the front end of the laser can concentrate the laser beam emitted by the laser into the 10 μm to 100 μm ion layer, causing nonlinearity between the laser and the glass. The reaction allows color center control or nanocrystal precipitation to be performed inside the glass.

The laser beam is focused inside a glass of a specific composition which is doped with a specific ion such as metal silver ion Ag ⁺ or gold ion Au ³⁺ or copper ion Cu ²⁺ or palladium ion Pd ⁴⁺ . By inducing a nonlinear reaction between the laser and the glass at the focus of the focused laser, color center control or nanocrystal precipitation is performed inside the glass, for example, such that Au ³⁺ captures photoelectrons and is reduced to Au atoms (Au3 ⁺ +e→Au). The heat treatment is then carried out at a higher temperature, and the Au atoms are agglomerated by thermal migration to form nanocrystals. Since these nanocrystals have surface plasmon absorption in the visible wavelength range, they exhibit a colored pattern. The color center is generated by the photoelectron generated by the interaction between the laser focus and the glass being captured by the glass structure. The precipitation of the nanocrystals inside the glass or the control of the color center does not cause microcracks inside the glass, and the influence on the strength of the glass is negligible.

Optionally, the laser beam used for drawing may have a pulse width of 10 fs to 200 ps and a wavelength of 780 nm to 820 nm. The repetition frequency may be selected from a high energy gear position of 100 kHz to 1000 kHz, or a low energy gear position of 1 kHz. However, if the gear position of the repetition frequency of the laser beam is selected to be 1 kHz, the process of step S106 may be performed after the pattern is drawn in the ion layer that focuses the laser beam onto the glass surface: the glass is heat-treated at a temperature of 350 ° C to 500 ° C.

When a laser beam with a repetition frequency of 100 kHz to 1000 kHz in a high-energy position is used, since the energy of the laser beam is high, heat treatment is not required, and the heavy metal cations in the ion layer on the glass surface are agglomerated, thereby completing image drawing. However, the laser beam with a repetition frequency of 100 kHz to 1000 kHz has a higher energy. For the glass after the partial salt bath of the heavy metal compound, the glass is easily broken during the focusing process, which may affect the strength of the glass. However, since the heat treatment is not required, the pattern is drawn at a faster speed.

When a laser beam with a repetition frequency of 1 kHz in a low energy gear is selected, since the laser beam energy is low, after focusing by the laser beam, it is further required to be further provided by heat treatment, and heavy metal cations in the ion layer of the glass surface are agglomerated. Energy to complete the drawing of the image. The use of a laser beam with a repetition rate of 1 kHz is less likely to cause glass chipping during the focusing process due to lower energy, and has less influence on the strength of the glass. However, the pattern is drawn at a slower speed due to the need for heat treatment.

Further, various ways of drawing patterns of multiple colors on glass are described in detail below in various embodiments:

Embodiment 1:

The glass used is the third generation of Corning Gorilla Gorilla Glass. (It should be noted that the glass can also be selected from the aforementioned Asahi-lime/Dragontrail, Schott Xensation, Electric Glass Dinorex, Xuhong Panda, Chengdu Optoelectronics, Luobo or Any of the types of glass such as CSG, where only one specific glass type is arbitrarily selected for illustration. In the following embodiments, the selected glass may be any of the above types of glass, and the glass is limited. The type is only used to illustrate that various glasses can be drawn using the above-described process of drawing patterns on glass. The third generation of Corning Gorilla Gorilla Glass is mixed with silver nitrate AgNO ₃ and potassium reinforced glass. The salt bath is carried out in the molten salt, and the weight ratio of silver nitrate AgNO ₃ in the molten salt is from 0.5% to 20%. That is to say, the process of drawing a pattern on the surface of the glass and the process of chemically strengthening the glass are performed simultaneously. The temperature of the salt bath is from 410 ° C to 430 ° C, and the duration of the salt bath is from 4 hours to 6 hours.

The ion layer of the laser beam having a pulse width of 10 fs to 100 ps, a wavelength of 780 nm to 820 nm, and a repetition frequency of 100 kHz to 1000 kHz is focused on the surface of the glass, and the pattern is yellow, and under ultraviolet light, the pattern exhibits yellow luminescence. By controlling the laser and processing parameters such as laser power, scanning speed, etc., different contrast patterns can be obtained.

Embodiment 2:

The selected glass is a chemically strengthened third-generation Corning Gorilla Gorilla Glass that has been subjected to a salt bath treatment with a glass-reinforced salt molten salt. The glass-reinforced third-generation Corning Gorilla Gorilla glass was placed in a silver nitrate AgNO ₃ molten salt. The temperature of the salt bath is from 410 ° C to 430 ° C, and the duration of the salt bath is from 4 hours to 6 hours.

Embodiment 3:

The selected glass is Schott Xensation glass, and the Schott Xensation glass is placed in a molten salt including copper chloride CuCl ₂ and potassium nitrate for glass strengthening, and the weight ratio of CuCl ₂ in the molten salt is 0.5% -10 %. The temperature of the salt bath is from 410 ° C to 430 ° C, and the duration of the salt bath is from 0.5 hours to 6 hours.

An ion layer engraved into the pattern of a laser beam having a pulse width of 10 fs to 200 ps, a wavelength of 780 to 820 nm, and a repetition frequency of 100 kHz to 1000 kHz is selected, and the pattern is red. By controlling the laser and processing parameters such as laser power, scanning speed, etc., different contrast patterns can be obtained.

Embodiment 4:

The selected glass is a Schott Xensation glass which has been subjected to a salt bath treatment with a salt-melted salt molten salt, and the chemically strengthened Schott Xensation glass is placed in a copper chloride CuCl ₂ molten salt for salt bath. The temperature of the salt bath is from 410 ° C to 430 ° C, and the duration of the salt bath is from 0.5 hours to 6 hours.

An ion layer engraved pattern with a pulse width of 10 fs to 200 ps, a wavelength of 780 to 820 nm, and a repetition rate of 100 kHz to 1000 kHz focused on the glass surface was selected, and the pattern was red. By controlling the laser and processing parameters such as laser power, scanning speed, etc., different contrast patterns can be obtained.

Embodiment 5:

The glass selected was an electric glass Dinorex glass, and the electric glass Dinorex glass was placed in palladium sulfate PdSO ₄ and a glass-reinforced potassium nitrate molten salt for salt bath. The temperature of the salt bath is from 300 ° C to 450 ° C, and the duration of the salt bath is from 0.5 hours to 6 hours.

The ion layer of the laser beam having a pulse width of 10 fs to 100 ps, a wavelength of 780 to 820 nm, and a repetition frequency of 100 kHz to 1000 kHz is selected to be engraved into the pattern on the glass surface, and the pattern is black. By controlling the laser and processing parameters such as laser power, scanning speed, etc., different contrast patterns can be obtained.

Example 6:

The selected glass is an electric glass Dinorex glass which has been subjected to a salt bath treatment with a molten salt for glass strengthening. The glass-reinforced electric glass Dinorex glass was placed in a palladium sulfate PdSO ₄ molten salt. The temperature of the salt bath is from 300 ° C to 450 ° C, and the duration of the salt bath is from 0.5 hours to 6 hours.

Example 7:

The third generation of Corning Gorilla Gorilla Glass, which was subjected to salt bath treatment with a glass-reinforced salt molten salt, was used to place the glass-reinforced third-generation Corning Gorilla Gorilla glass into the gold oxide Au ₂ O _{3 .} Molten salt. The temperature of the salt bath is from 300 ° C to 450 ° C, and the duration of the salt bath is from 0.5 hours to 6 hours.

The ion layer of the laser beam having a pulse width of 10 fs to 100 ps, a wavelength of 780 to 820 nm, and a repetition frequency of 100 kHz to 1000 kHz is selected to be engraved into the pattern on the glass surface, and the pattern is red. By controlling the laser and processing parameters such as laser power, scanning speed, etc., different contrast patterns can be obtained.

Example 8:

The glass was selected as the third generation of Corning Gorilla Gorilla Glass, and the third generation of Corning Gorilla Gorilla Glass was placed in a molten salt including silver nitrate AgNO ₃ , copper chloride CuCl ₂ and potassium nitrate for glass strengthening. The temperature of the salt bath is from 400 ° C to 430 ° C, and the duration of the salt bath is from 1 hour to 6 hours.

An ion layer focused on the glass surface of a laser beam having a pulse width of 10 fs to 10 ps, a wavelength of 780 nm to 820 nm, and a repetition frequency of 100 kHz is selected to be patterned in a brownish red color. By controlling the laser and processing parameters such as laser power, scanning speed, etc., different contrast patterns can be obtained.

Example 9:

The glass was selected as the third generation of Corning Gorilla Gorilla Glass, and the third generation of Corning Gorilla Gorilla Glass was placed in a molten salt comprising copper chloride CuCl ₂ , palladium sulfate PdSO ₄ and potassium nitrate for glass strengthening. The temperature of the salt bath is from 400 ° C to 430 ° C, and the duration of the salt bath is from 1 hour to 6 hours.

The ion layer of the laser beam having a pulse width of 10 fs to 200 ps, a wavelength of 780 nm to 820 nm, and a repetition frequency of 100 kHz to 1000 kHz is selected to be engraved into the pattern of the glass surface, and the pattern is dark red. By controlling the laser and processing parameters such as laser power, scanning speed, etc., different contrast patterns can be obtained.

Example 10:

The glass used was the third generation of Corning Gorilla Gorilla Glass, and the third generation of Corning Gorilla Gorilla Glass was placed in a molten salt including silver chloride AgCl and potassium reinforced potassium nitrate, and AgCl was in molten salt. The weight ratio is from 0.5% to 20%. That is to say, the process of drawing a pattern on the surface of the glass and the process of chemically strengthening the glass are performed simultaneously. The temperature of the salt bath is from 410 ° C to 500 ° C, and the duration of the salt bath is from 4 hours to 6 hours.

The ion layer of the laser beam having a pulse width of 10 fs to 100 ps, a wavelength of 780 nm to 820 nm, and a repetition rate of 1 kHz is focused on the glass surface to engrave the pattern, and the pattern is gray. Further, heat treatment was carried out at a temperature of 400 ° C for a period of 30 minutes to 120 minutes, and the pattern turned yellow. By controlling the heat treatment time, patterns of different contrasts can be obtained.

Example 11:

The glass used was the third generation of Corning Gorilla Gorilla Glass after salt bath treatment with a glass-reinforced salt molten salt. The glass-reinforced third-generation Corning Gorilla Gorilla glass is placed in a silver chloride AgCl molten salt having a salt bath temperature of 410 ° C to 500 ° C and a salt bath duration of 4 hours to 6 hours.

Select a pulse width of 10fs to 100ps, a wavelength of 780nm to 820nm, and a repetition rate of 1kHz The laser beam is focused on the surface of the glass and the ion layer is engraved into the pattern, and the pattern is gray. Further, heat treatment was carried out at a temperature of 400 ° C for a period of 30 minutes to 120 minutes, and the pattern turned yellow. By controlling the heat treatment time, patterns of different contrasts can be obtained.

Example 12:

The glass was selected as the third generation of Corning Gorilla Gorilla Glass, and the third generation of Corning Gorilla Gorilla Glass was placed in a molten salt including palladium sulfate PdSO ₄ and potassium nitrate for glass strengthening, and palladium sulfate PdSO ₄ The weight ratio in the molten salt is from 0.5% to 20%. The temperature of the salt bath is from 300 ° C to 450 ° C, and the duration of the salt bath is from 0.5 hours to 6 hours.

The ion layer of the laser beam having a pulse width of 10 fs to 100 ps, a wavelength of 780 nm to 820 nm, and a repetition rate of 1 kHz is focused on the glass surface to engrave the pattern, and the pattern is gray. Further, a heat treatment at a temperature of 350 ° C to 450 ° C is carried out, and the heat treatment is carried out for a period of 30 minutes to 120 minutes, and the pattern becomes black. By controlling the heat treatment time, patterns of different contrasts can be obtained.

Example 13:

The third generation of Corning Gorilla Gorilla Glass, which has been subjected to a salt bath treatment with a glass-reinforced salt molten salt, is used to place a glass-reinforced third-generation Corning Gorilla Gorilla glass into palladium sulfate PdSO ₄ molten salt. in. The temperature of the salt bath is from 300 ° C to 450 ° C, and the duration of the salt bath is from 0.5 hours to 6 hours.

Embodiment 14:

The third generation of Corning Gorilla Gorilla Glass, which was subjected to salt bath treatment with a glass-reinforced salt molten salt, was used to place the glass-reinforced third-generation Corning Gorilla Gorilla glass into the Au ₂ O ₃ oxide. Molten salt. The temperature of the salt bath is from 300 ° C to 450 ° C, and the duration of the salt bath is from 0.5 hours to 6 hours.

The ion layer of the laser beam having a pulse width of 10 fs to 100 ps, a wavelength of 780 nm to 820 nm, and a repetition rate of 1 kHz is focused on the glass surface to engrave the pattern, and the pattern is gray. Further, heat treatment is carried out at a temperature of from 350 ° C to 500 ° C for a period of from 30 minutes to 120 minutes, and the pattern turns red. By controlling the heat treatment time, patterns of different contrasts can be obtained.

Example 15:

The glass is selected as the third generation of Corning Gorilla Gorilla Glass after salt bath treatment for glass-reinforced salt molten salt. The glass-reinforced third-generation Corning Gorilla Gorilla glass is placed into platinum oxide PtO ₂ molten salt. in. The temperature of the salt bath is from 450 ° C to 500 ° C, and the duration of the salt bath is from 0.5 hours to 6 hours.

The ion layer of the laser beam having a pulse width of 10 fs to 100 ps, a wavelength of 780 nm to 820 nm, and a repetition rate of 1 kHz is focused on the glass surface to engrave the pattern, and the pattern is gray. Further, a heat treatment at a temperature of 450 ° C to 550 ° C was carried out, and the heat treatment was carried out for a period of 30 minutes to 120 minutes, and the pattern became black. By controlling the heat treatment time, patterns of different contrasts can be obtained.

Example 16:

The glass was selected as the third generation of Corning Gorilla Gorilla Glass, and the third generation Corning Gorilla Gorilla Glass was placed in a molten salt including silver nitrate AgNO ₃ , gold oxide Au ₂ O ₃ and potassium nitrate for glass strengthening. . The temperature of the salt bath is from 400 ° C to 430 ° C, and the duration of the salt bath is from 1 hour to 6 hours.

Drawing the pattern in the ion layer that focuses the laser beam onto the glass surface includes: first focusing the laser beam onto the ion layer of the glass surface to draw a pattern and second focusing the laser beam onto the glass surface The pattern is drawn in the ion layer, and the laser beam has a pulse width of 10 fs to 20 ps, a wavelength of 780 nm to 820 nm, and a repetition frequency of 1 kHz. The laser beam is painted before the glass is heat treated The pattern is gray.

Heat treating the glass includes heat treating the glass for the first time after patterning the first time the laser beam is focused into the ion layer of the glass surface, and focusing the laser beam to the second time The glass is heat treated a second time after the pattern is drawn in the ion layer of the glass surface.

The temperature at which the glass was heat-treated for the first time was 450 ° C, and the length of the heat treatment was 30 minutes, and the pattern drawn for the first time turned red. The temperature at which the glass was heat-treated for the second time was 400 ° C, the length of the heat treatment was 30 minutes, and the pattern drawn for the second time became yellow. The final pattern can be rendered in red and yellow. That is to say, for the glass after the salt bath, the laser beam of the same or different parameters can be used to draw the image on the glass multiple times, and then the pattern drawn on the glass can be made by heat treatment at different temperatures after each drawing is completed. A variety of colors are presented, that is, a colored pattern can be drawn on the glass.

Example 17:

The glass was selected as the third generation Corning Gorilla Gorilla Glass, and the third generation Corning Gorilla Gorilla Glass was placed in a molten salt including silver nitrate AgNO ₃ , palladium sulfate PdSO ₄ and potassium nitrate for glass strengthening. The temperature of the salt bath is from 400 ° C to 430 ° C, and the duration of the salt bath is from 1 hour to 6 hours.

Drawing a pattern of the laser beam focused into the ion layer of the glass surface includes: first focusing the laser beam onto the ion layer of the glass surface to draw a pattern and second focusing the laser beam onto the surface of the glass A pattern is drawn in the layer, and a laser beam having a pulse width of 10 fs to 20 ps, a wavelength of 780 nm to 820 nm, and a repetition frequency of 1 kHz is selected. The pattern drawn by the laser beam is gray before the glass is heat treated.

In summary, the implementation of the embodiments of the present invention will have the following beneficial effects:

The above is only the preferred embodiment of the present invention, and the scope of the present invention is not limited thereto, and thus equivalent changes made in the claims of the present invention are still within the scope of the present invention.

Claims

A method of drawing a pattern on a glass, comprising:

Putting a glass into a molten salt to perform a salt bath, forming an ion layer on the surface of the glass, wherein the molten salt includes a heavy metal compound;

A pattern is drawn by focusing the laser beam into an ion layer of the glass surface.
The method of drawing a pattern on glass according to claim 1, wherein the glass is a chemically strengthened glass subjected to a salt bath treatment with a salt molten salt for glass strengthening.
The method of drawing a pattern on glass according to claim 1 or 2, wherein the molten salt further comprises a salt molten salt for glass strengthening.
The method of drawing a pattern on glass according to claim 3, wherein the salt molten salt for glass strengthening includes at least one of Li + , Na + and K + .
A method of drawing a pattern on glass according to any one of claims 1 to 4, wherein the cation in the heavy metal compound comprises Ag + , Au 3+ , Cu 2+ , Pd 2+ and Pt 4+ At least one of them.
A method of drawing a pattern on glass according to any one of claims 1 to 5, wherein the salt bath has a temperature of from 80 ° C to 500 ° C and the salt bath has a time of from 10 minutes to 360 minutes.
A method of drawing a pattern on glass according to any one of claims 1 to 6, wherein the molten salt comprises at least one of nitrate, chloride, sulfate, phosphate and oxide.
A method of drawing a pattern on glass according to any of claims 1-7, wherein the glass is an aluminosilicate glass.
A method of drawing a pattern on glass according to any one of claims 1-8, wherein the thickness of the ion layer of the glass surface is from 10 μm to 100 μm.
The method of drawing a pattern on glass according to any one of claims 1 to 9, wherein the laser beam has a pulse width of 10 fs to 200 ps, a wavelength of 780 nm to 820 nm, and a repetition frequency of 100 kHz to 1000 kHz.
A method of drawing a pattern on glass according to claim 10, wherein said molten salt comprises silver nitrate AgNO 3 molten salt and potassium nitrate molten salt for glass strengthening, and said silver nitrate AgNO 3 is melted. The weight ratio in the salt is 0.5%-20%; the temperature of the salt bath is 410 ° C to 430 ° C, the duration of the salt bath is 4 hours to 6 hours; the pulse width of the laser beam is 10 fs to 100 ps, The wavelength is from 780 nm to 820 nm and the repetition frequency is from 100 kHz to 1000 kHz.
The method for drawing a pattern on glass according to claim 10, wherein the glass is a chemically strengthened glass subjected to a salt bath treatment by a salt molten salt for glass strengthening; the molten salt is silver nitrate AgNO 3 molten salt; the temperature of the salt bath is 410 ° C to 430 ° C, the duration of the salt bath is 4 hours to 6 hours; the pulse width of the laser beam is 10 fs to 100 ps, the wavelength is 780 nm to 820 nm, and the repetition The frequency is from 100kHz to 1000kHz.
The method of drawing a pattern on glass according to claim 10, wherein the molten salt comprises a copper chloride CuCl 2 molten salt and a potassium nitrate molten salt for glass strengthening, and the CuCl 2 is in a molten salt. The weight ratio is 0.5%-10%; the temperature of the salt bath is 410 ° C to 430 ° C, the duration of the salt bath is 0.5 hours to 6 hours; the pulse width of the laser beam is 10 fs to 200 ps, wavelength It is 780 to 820 nm and the repetition frequency is 100 kHz to 1000 kHz.
The method for drawing a pattern on glass according to claim 10, wherein the glass is a chemically strengthened glass subjected to a salt bath treatment using a salt molten salt for glass strengthening; the molten salt is chlorinated a copper CuCl 2 molten salt; the salt bath has a temperature of 410 ° C to 430 ° C, and the salt bath has a duration of 0.5 hours to 6 hours; and the laser beam has a pulse width of 10 fs to 200 ps and a wavelength of 780 to 820 nm. The repetition frequency is from 100 kHz to 1000 kHz.
A method of drawing a pattern on glass according to claim 10, wherein said molten salt comprises palladium sulfate PdSO 4 molten salt and potassium nitrate molten salt for glass strengthening; said salt bath has a temperature of 300 ° C The temperature of the salt bath is from 0.5 hours to 6 hours at 450 ° C; the laser beam has a pulse width of 10 fs to 100 ps, a wavelength of 780 to 820 nm, and a repetition frequency of 100 kHz to 1000 kHz.
The method for drawing a pattern on glass according to claim 10, wherein the glass is a chemically strengthened glass subjected to a salt bath treatment with a salt molten salt for glass strengthening; the molten salt is palladium sulfate PdSO 4 molten salt; the temperature of the salt bath is 300 ° C to 450 ° C, the duration of the salt bath is 0.5 hours to 6 hours; the pulse width of the laser beam is 10 fs to 100 ps, the wavelength is 780 to 820 nm, and the repetition The frequency is from 100kHz to 1000kHz.
The method for drawing a pattern on glass according to claim 10, wherein the molten salt comprises silver nitrate AgNO 3 molten salt, copper chloride CuCl 2 molten salt, and potassium nitrate molten salt for glass strengthening; The temperature of the salt bath is from 400 ° C to 430 ° C, and the duration of the salt bath is from 1 hour to 6 hours; the pulse width of the laser beam is from 10 fs to 10 ps, the wavelength is from 780 nm to 820 nm, and the repetition frequency is 100 kHz.
The method for drawing a pattern on glass according to claim 1, wherein the molten salt comprises copper chloride CuCl 2 molten salt, palladium sulfate PdSO 4 molten salt, and potassium nitrate molten salt for glass strengthening; The salt bath has a temperature of from 400 ° C to 430 ° C and the salt bath has a duration of from 1 hour to 6 hours; the laser beam has a pulse width of from 10 fs to 200 ps, a wavelength of from 780 nm to 820 nm, and a repetition frequency of from 100 kHz to 1000 kHz.
The method for drawing a pattern on a glass according to any one of claims 1 to 9, wherein the laser beam has a pulse width of 10 fs to 200 ps, a wavelength of 780 nm to 820 nm, and a repetition frequency of 1 kHz;

After the laser beam is focused onto the ion layer of the glass surface to draw a pattern, the method further includes:

The glass is subjected to a heat treatment at a temperature of from 350 ° C to 500 ° C.
The method of drawing a pattern on glass according to claim 19, wherein said molten salt comprises silver chloride AgCl molten salt and potassium nitrate molten salt for glass strengthening, and said AgCl is in molten salt. The weight ratio is 0.5%-20%; the temperature of the salt bath is 410 ° C to 500 ° C, the duration of the salt bath is 4 hours to 6 hours; the pulse width of the laser beam is 10 fs to 100 ps, the wavelength is 780 nm To 820 nm, the repetition frequency is 1 kHz; the temperature of the heat treatment is 400 ° C, and the duration of the heat treatment is 30 minutes to 120 minutes.
The method for drawing a pattern on glass according to claim 19, wherein the glass is a fortified chemically strengthened glass subjected to a salt bath treatment with a salt-like molten salt for glass strengthening; the molten salt is chlorine Silver AgCl molten salt; the salt bath has a temperature of 410 ° C to 500 ° C, the salt bath The duration of the laser beam is from 10 fs to 100 ps; the pulse width is from 10 fs to 100 ps, the wavelength is from 780 to 820 nm, and the repetition frequency is 1 kHz; the temperature of the heat treatment is 400 ° C, and the duration of the heat treatment is 30 minutes to 120 minutes.
The method of drawing a pattern on glass according to claim 19, wherein the molten salt comprises a palladium sulfate PdSO 4 molten salt and a potassium nitrate molten salt for glass strengthening, and the palladium sulfate PdSO 4 is melted. The weight ratio in the salt is 0.5%-20%; the temperature of the salt bath is 300 ° C to 450 ° C, the duration of the salt bath is 0.5 hours to 6 hours; the pulse width of the laser beam is 10 fs to 100 ps, The wavelength is from 780 nm to 820 nm, the repetition frequency is 1 kHz; the temperature of the heat treatment is from 350 ° C to 450 ° C, and the duration of the heat treatment is from 30 minutes to 120 minutes.
The method for drawing a pattern on glass according to claim 19, wherein the glass is a chemically strengthened glass subjected to a salt bath treatment with a salt molten salt for glass strengthening; the molten salt is palladium sulfate PdSO 4 molten salt; the temperature of the salt bath is 300 ° C to 450 ° C, the duration of the salt bath is 0.5 hours to 6 hours; the pulse width of the laser beam is 10 fs to 100 ps, the wavelength is 780 nm to 820 nm, and the repetition The frequency is 1 kHz; the temperature of the heat treatment is 350 ° C to 450 ° C, and the duration of the heat treatment is 30 minutes to 120 minutes.
The method for drawing a pattern on glass according to claim 19, wherein the glass is a chemically strengthened glass subjected to a salt bath treatment using a salt molten salt for glass strengthening; and the molten salt is gold oxide. Au 2 O 3 molten salt; the temperature of the salt bath is 300 ° C to 450 ° C, the duration of the salt bath is 0.5 hours to 6 hours; the pulse width of the laser beam is 10 fs to 100 ps, and the wavelength is 780 nm to 820 nm The repetition frequency is 1 kHz; the heat treatment temperature is 350 ° C to 500 ° C, and the heat treatment has a duration of 30 minutes to 120 minutes.
The method for drawing a pattern on glass according to claim 19, wherein the glass is a chemically strengthened glass subjected to a salt bath treatment with a salt molten salt for glass strengthening; the molten salt is platinum oxide a PtO 2 molten salt; the temperature of the salt bath is 450 ° C to 500 ° C, the duration of the salt bath is 0.5 hours to 6 hours; the pulse width of the laser beam is 10 fs to 100 ps, the wavelength is 780 nm to 820 nm, and the repetition The frequency is 1 kHz; the temperature of the heat treatment is 450 ° C to 550 ° C, and the duration of the heat treatment is 30 minutes to 120 minutes.
The method of drawing a pattern on glass according to claim 19, wherein the molten salt comprises silver nitrate AgNO 3 molten salt, gold oxide Au 2 O 3 molten salt, and potassium nitrate molten salt for glass strengthening; The salt bath has a temperature of 400 ° C to 430 ° C, the salt bath has a duration of 1 hour to 6 hours; the laser beam has a pulse width of 10 fs to 20 ps, a wavelength of 780 nm to 820 nm, and a repetition frequency of 1 kHz;

The drawing of the pattern in the ion layer that focuses the laser beam onto the surface of the glass comprises:

First drawing a pattern in the ion layer that focuses the laser beam onto the surface of the glass and drawing a pattern in the ion layer that focuses the laser beam onto the surface of the glass a second time;

The heat treatment of the glass includes:

The glass is heat treated for the first time after the pattern is drawn in the ion layer of the glass surface for the first time, and the laser beam is focused to the ion layer of the glass surface for the second time. Heat treating the glass a second time after drawing the pattern;

The temperature at which the glass is heat-treated for the first time is 450 ° C, the duration of the heat treatment is 30 minutes; the temperature at which the glass is heat-treated for the second time is 400 ° C, and the duration of the heat treatment is 30 minute.
The method of drawing a pattern on glass according to claim 2, wherein the molten salt comprises silver nitrate AgNO 3 molten salt, palladium sulfate PdSO 4 molten salt, and potassium nitrate molten salt for glass strengthening; The salt bath has a temperature of 400 ° C to 430 ° C, the salt bath has a duration of 1 hour to 6 hours; the laser beam has a pulse width of 10 fs to 20 ps, a wavelength of 780 nm to 820 nm, and a repetition frequency of 1 kHz;

The drawing of the pattern in the ion layer that focuses the laser beam onto the surface of the glass comprises:

First drawing a pattern in the ion layer that focuses the laser beam onto the surface of the glass and drawing a pattern in the ion layer that focuses the laser beam onto the surface of the glass a second time;

The heat treatment of the glass includes:

Performed after the first time the laser beam is focused onto the ion layer of the glass surface Heat treating the glass for the first time and heat treating the glass a second time after patterning the second time the laser beam is focused onto the ion layer of the glass surface;

The temperature at which the glass is heat-treated for the first time is 450 ° C, the duration of the heat treatment is 30 minutes; the temperature at which the glass is heat-treated for the second time is 400 ° C, and the duration of the heat treatment is 30 minute.
A glass cover plate characterized by having a pattern drawn by the method of drawing a pattern on glass according to any one of claims 1 to 27.