CN109202296B

CN109202296B - Texture processing method of protective cover plate

Info

Publication number: CN109202296B
Application number: CN201710522762.1A
Authority: CN
Inventors: 黄磊
Original assignee: Meizu Technology Co Ltd
Current assignee: Meizu Technology Co Ltd
Priority date: 2017-06-30
Filing date: 2017-06-30
Publication date: 2021-08-10
Anticipated expiration: 2037-06-30
Also published as: CN109202296A

Abstract

The invention provides a texture processing method of a protective cover plate, which comprises the following steps: laser is carried out on a preset area of the protective cover plate to form a texture pattern; plating a film coating layer on the texture pattern; printing ink on the coating layer. According to the texture processing method of the protective cover plate, the texture patterns are obtained through laser, the quality and the yield of the protective cover plate are improved, in addition, the laser processing is utilized, the processing technological parameters are controllable, and the definition of the processed texture patterns is high; plating a coating layer on the texture pattern, wherein the coating layer improves the transmittance of incident light in a specific wavelength range, and enables a user to watch the texture pattern and simultaneously present a colorful dazzling effect when changing a visual angle; and printing the printing ink on the coating layer, wherein the printing ink is used for providing background color for the protective cover plate and shielding a fixed structure between the protective cover plate and the electronic equipment.

Description

Texture processing method of protective cover plate

Technical Field

The invention relates to the technical field of protective cover plates, in particular to a texture processing method of a protective cover plate.

Background

This section is intended to provide a background or context to the specific embodiments of the invention that are recited in the claims. The description herein is not admitted to be prior art by inclusion in this section.

With the development of the mobile phone industry, in order to meet the personalized requirements of customers, various mobile phone manufacturers design diversified mobile phone shells, and the effect of designing patterns on the protective cover is the hottest design scheme. At present, in the industry, a pattern effect is mainly manufactured by sticking a film with a pattern on a protective cover plate. However, the protective cover plate manufactured by the film pasting process has the problems of poor pattern effect stereoscopic impression, easy color change for a long time, complex process, increased thickness of the film and the like.

Disclosure of Invention

In view of the above, the present invention provides a texture processing method for a protective cover plate, which can improve the quality and yield of the protective cover plate.

A method of texturing a protective cover sheet, the method comprising:

laser is carried out on a preset area of the protective cover plate to form a texture pattern;

plating a film coating layer on the texture pattern;

printing ink on the coating layer.

Further, radium-shine out the texture pattern at the preset area laser of protection apron includes:

and removing the surface material of the protective cover plate in a preset area of the protective cover plate through laser to laser out a preset concave-convex texture pattern.

Further, the protective cover plate is a sapphire cover plate.

Further, the protective cover plate is an aluminum-silicon, sodium-calcium or borosilicate glass cover plate.

Further, after the step of "laser forming a texture pattern on a preset area of the protective cover plate" and before the step of "plating a plating film layer on the texture pattern", the method further comprises:

and placing the protective cover plate into 380-420 ℃ molten salt for salt bath.

Further, the grain width of the grain pattern is larger than 25 microns, and the grain depth of the grain pattern is larger than 5 microns.

Further, the diameter of a laser spot of the laser is 10-60 microns.

Further, the printing ink on the film coating layer comprises:

printing ink on the coating layer by adopting a screen printing mode.

Further, the protection apron sets up camera or the fingerprint module top at the terminal.

A method of texturing a protective cover sheet, the method comprising:

plating a film coating layer on the back of the corresponding area of the texture pattern;

printing ink on the coating layer.

According to the texture processing method of the protective cover plate, the texture patterns are obtained by laser, and the texture patterns are formed by performing non-contact processing on the protective cover plate by adopting laser, so that the protective cover plate base body is not damaged, the quality and the yield of the protective cover plate are improved, in addition, the laser processing is utilized, the processing technological parameters are controllable, and the definition of the processed texture patterns is high; plating a coating layer on the texture pattern, wherein the coating layer improves the transmittance of incident light in a specific wavelength range, and enables a user to watch the texture pattern and simultaneously present a colorful dazzling effect when changing a visual angle; and printing the printing ink on the coating layer, wherein the printing ink is used for providing background color for the protective cover plate and shielding a fixed structure between the protective cover plate and the electronic equipment.

Drawings

Fig. 1 is a flowchart of a texture processing method of a protective cover according to a first embodiment of the present invention.

Fig. 2 is a flowchart of a texture processing method of a protective cover according to a second embodiment of the present invention.

Fig. 3 is a flowchart of a texture processing method of a protective cover according to a third embodiment of the present invention.

Fig. 4 is a flowchart of a texture processing method of a protective cover according to a fourth embodiment of the present invention.

Description of the main elements

Protective cover plate	110、210、310、410
		Laser device	800
Fused salt	130、230
		Film coating layer	140、240、340、440
Printing ink	150、250、350、450

The following detailed description will further illustrate the invention in conjunction with the above-described figures.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention. The embodiments described below and the features of the embodiments can be combined with each other without conflict.

It should be noted that, when an element is referred to as being "connected" to another element in the present invention, it can be directly connected to the other element or be indirectly connected to the other element through intervening elements.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

Referring to fig. 1, a flow chart of a texture processing method of a protective cover plate 110 according to a first embodiment of the invention is shown. The texture processing method of the protective cover plate 110 according to the embodiment of the present invention may be applied to any device having a protective cover plate, for example: electronic devices having a display function, such as tablet computers, mobile phones, electronic readers, Personal Computers (PCs), notebook computers, televisions, and wearable devices. In this embodiment, the protective cover 110 is disposed outside the camera or the fingerprint module of the electronic device, and the camera or the fingerprint module is exposed to the outside through the protective cover 110.

The texture processing method of the protective cover plate 110 provided by the first embodiment of the present invention includes:

s11: and laser forming a texture pattern on a preset area of the protective cover plate 110. It is understood that in other embodiments, a step of providing the protective cover 110 without the grain pattern may be included before the step S11. The protective cover plate 110 in the present embodiment is an aluminum-silicon, sodium-calcium or borosilicate glass cover plate.

In the present embodiment, step S11 includes: and laser-etching a predetermined concave-convex texture pattern on a predetermined area of the protective cover plate 110 by removing a surface material of the protective cover plate 110 with laser. According to the invention, the protective cover plate 110 is processed in a non-contact manner by adopting laser to form the texture pattern, so that the base body of the protective cover plate 110 is not damaged, and the quality and the yield of the protective cover plate 110 are improved. In addition, laser processing is utilized, processing technological parameters are controllable, and the definition of texture patterns formed by processing is high.

Specifically, step S11 includes: presetting laser etching patterns and technological parameters according to the texture patterns and the effect thereof; placing the protective cover plate 110 to be processed on a working platform of laser etching equipment, starting the laser etching equipment, focusing laser on the protective cover plate to be processed and scanning the protective cover plate, and removing the surface material of the protective cover plate 110 through the laser in the preset area to laser out a preset concave-convex texture pattern.

In the present embodiment, the laser is focused on the surface of the protective cover 110. The laser etching equipment is provided with a laser emitting system consisting of a laser 800, a beam expanding lens, a vibration lens group and a focusing lens, the relative position between the laser focusing point and the surface of the glass to be processed is adjusted by a lifting body, and the focusing lens is used for enabling the laser to be always focused on the surface of the glass to be processed. The laser 800, the vibration mirror group and the working platform are respectively controlled by an industrial personal computer. The repetition frequency of the laser pulse is 10 kHz-30 kHz, and the scanning speed of the laser is more than 500 mm/s.

In order to improve the definition and the three-dimensional effect of the texture pattern, the grain width b of the texture pattern is larger than 25 micrometers, the grain interval d is larger than 25 micrometers, and the grain depth c is larger than 5 micrometers. In this embodiment, the grain width b of the grain pattern is 30 micrometers, the grain interval d is 30 micrometers, and the grain depth c is 10 micrometers. It is understood that in other embodiments, the dimensions of the ridge width b, the ridge spacing d, and the ridge depth c may be selected to satisfy other values within the above ranges. In addition, the distance a between the grain pattern and the edge of the protective cover 110 is greater than a predetermined value, so as to prevent the laser spot from drifting out of the protective cover 110.

The laser 800 emits ultraviolet laser with the wavelength of 355nm, the diameter range of laser spots of the laser is 10-60 microns, and the minimum diameter of the laser spots reaches 10 microns through adjustment of the beam expander. And the line width b is larger than the laser spot diameter of the laser. In this embodiment, the grain width b is 30 micrometers, and the laser spot diameter is required to be smaller than 30 micrometers. It is understood that in other embodiments, the laser spot diameter size may be selected to be other values less than the ridge width b.

S12: and (3) placing the protective cover plate 110 into the 380-420 ℃ molten salt 130 for salt bath to chemically strengthen the protective cover plate 110 with the texture pattern on the surface. The molten salt 130 is contained in a high temperature resistant container, and includes a molten salt for glass strengthening. During the temperature rise to 380-420 ℃, the molten salt 130 is transformed from a solid state to a liquid state. The protective cover plate 110 is immersed in a salt bath in the molten salt 130, and ions on the surface of the protective cover plate 110 are exchanged with ions in the molten salt 130, so that a pressure stress layer is formed on the protective cover plate 110. The compressive stress layer greatly improves the bending resistance of the chemically strengthened protective cover plate 110 and the texture patterns thereon. The use of the chemically strengthened protective cover 110 as the cover glass of the electronic device can prevent the cover glass from being deformed when the electronic device falls from a high place, and the cover glass is not broken. In this embodiment, the molten salt 130 includes potassium nitrate or sodium nitrate. It is understood that in other embodiments, the salt-type molten salt may include at least one of lithium ion, sodium ion, or potassium ion.

S13: the coating layer 140 is plated on the texture pattern, and the coating layer 140 improves the transmittance of incident light in a specific wavelength range and reflects the incident light in a specified wavelength range. In this embodiment, the coating layer 140 is used for reflecting light blue and violet light. It is understood that in other embodiments, the coating 140 may be configured to reflect deep red, deep blue, deep yellow, and deep green incident light. The dark green coating layer 140 can increase the transmittance of blue light and red light at two ends of the spectrum at the same time, and only yellow green light in the middle of the spectrum is reflected, so that the transmittance curve of the coating layer 140 has two peak increasing values of red and blue, and the color gamut is effectively enlarged along the wide color range. In addition, the coating layer 140 allows a user to view a texture pattern and simultaneously display a colorful dazzling effect when the user changes the visual angle.

S14: printing ink 150 on the plating layer 140. The ink 150 is applied on the protective cover 110 to provide a background color. Specifically, in this embodiment, the protective cover plate 110 may be adhered and fixed to the surface of the electronic device through a back adhesive, and the ink 150 is coated on an edge area of the protective cover plate 110 to shield the back adhesive between the protective cover plate 110 and the electronic device. It is understood that in other embodiments, the protective cover 110 may be fixed to the surface of the electronic device by a snap or other structure, and the ink 150 is applied to the edge region of the protective cover 110 to block the fixing structure between the protective cover 110 and the electronic device. In this embodiment, the coating layer 140 is printed with ink 150 by screen printing. The screen printing equipment is simple, the operation is convenient, the printing and the plate making are simple and easy, the cost is low, and the adaptability is strong.

Referring to fig. 2, a flow chart of a texture processing method of the protective cover 210 according to a second embodiment of the invention is shown. The texture processing method of the protective cover plate 210 according to the second embodiment includes the following steps:

s21: and laser forming a texture pattern on a preset area of the protective cover plate 210.

S22: and placing the protective cover plate 210 into the 380-420 ℃ molten salt 230 for salt bath.

Step S21 and step S22 are the same as step S11 and step S12 in the first embodiment, and are not repeated here.

S23: and plating a coating layer 240 on the back of the region corresponding to the texture pattern, wherein the coating layer 240 improves the transmittance of incident light in a specific wavelength range and reflects the incident light in a specified wavelength range. In this embodiment, the coating layer 240 is used to reflect light blue-violet light. It is understood that in other embodiments, the coating 240 may be configured to reflect deep red, deep blue, deep yellow, and deep green incident light. The dark green coating layer 240 can increase the transmittance of blue light and red light at two ends of the spectrum, and only yellow green light in the middle of the spectrum is reflected, so that the transmittance curve of the coating layer 240 has two peak increasing values of red and blue, and the color gamut is effectively wide. In addition, the coating layer 240 allows a user to view a texture pattern and a color flare effect when the user changes the viewing angle.

S24: printing ink 250 on the coating layer 240. The ink 250 is applied to the protective cover 210 to provide a background color. Specifically, in this embodiment, the texture pattern on the protective cover 210 is exposed on the surface of the electronic device. The protective cover plate 210 can be fixed on the surface of the electronic device by back adhesive bonding, and the ink 150 is coated on the edge area of the protective cover plate 210 to shield the back adhesive between the protective cover plate 210 and the electronic device. It is understood that in other embodiments, the protective cover 210 may be fixed to the surface of the electronic device by a snap or other structure, and the ink 150 is applied to the edge area of the protective cover 210 to block the fixing structure between the protective cover 210 and the electronic device. In this embodiment, the coating layer 140 is printed with ink 150 by screen printing. The screen printing equipment is simple, the operation is convenient, the printing and the plate making are simple and easy, the cost is low, and the adaptability is strong.

Referring to fig. 3, a flow chart of a texture processing method of the protective cover 310 according to a third embodiment of the invention is shown. The texture processing method of the protective cover plate 310 provided by the third embodiment comprises the following steps:

s31: and laser forming a texture pattern on a preset area of the protective cover plate 310.

Wherein the protective cover plate 310 is a sapphire cover plate that is wear-resistant. Compared with common glass, the sapphire cover plate has higher hardness, chemical corrosion resistance, high temperature resistance, good heat conduction, high hardness and infrared transmission, is applied to instruments such as night vision infrared and far infrared sighting telescope, night vision camera and the like, and instruments and meters of satellite and space technology, and is used as a window of a high-power laser, various optical prisms, optical windows, UV and IR windows and lenses, an observation port of a low-temperature experiment and the like.

S32: and plating a coating layer 340 on the texture pattern.

S33: printing ink 350 on the coating layer 340.

Steps S32 and S33 are the same as steps S12 and S13 in the first embodiment, and are not repeated here.

Referring to fig. 4, fig. 4 is a flowchart illustrating a texture processing method of a protective cover 410 according to a fourth embodiment of the invention. The texture processing method of the protective cover plate 310 provided by the fourth embodiment comprises the following steps:

s41: laser is carried out on a preset area of the protective cover plate 410 to form a texture pattern;

s42: plating a coating layer 440 on the back of the area corresponding to the texture pattern;

s43: and printing ink 450 on the coating layer 440.

Step S41 is the same as step S31 in the third embodiment, and step S42 and step S43 are the same as step S23 and step S24 in the second embodiment, which are not repeated herein.

The above description is only an embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes performed by the present specification and drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.

Claims

1. A method of texturing a protective cover sheet, the method comprising:

plating a film coating layer on the back of the area corresponding to the texture pattern, wherein the film coating layer can improve the transmittance of incident light in a specific wavelength range, reflect the incident light in a specified wavelength range, and enable a user to show a colorful dazzling effect while watching the texture pattern when changing the visual angle;

printing ink on the coating layer.

2. The method of claim 1, wherein laser-patterning a predetermined area of the protective cover comprises:

3. The method of texturing a protective cover sheet according to claim 1, wherein the protective cover sheet is a sapphire cover sheet.

4. The method for texturing a protective cover sheet according to claim 1, wherein the protective cover sheet is an aluminum-silicon, sodium-calcium, or borosilicate glass cover sheet.

5. The method for texturing a protective cover according to claim 4, wherein after the step of laser-patterning a predetermined area of the protective cover and before the step of plating a coating layer on the back surface of the area corresponding to the textured pattern, the method further comprises:

6. The method of texturing a protective cover sheet according to claim 1, wherein the grain width of the grain pattern is greater than 25 microns and the grain depth of the grain pattern is greater than 5 microns.

7. The method of texturing a protective cover sheet according to claim 1, wherein the laser spot diameter of the laser is 10 to 60 μm.

8. The method of texturing a protective cover sheet according to claim 1, wherein the printing ink on the coating layer comprises:

printing ink on the coating layer by adopting a screen printing mode.

9. The texturing method of a protective cover according to any one of claims 1 to 8, wherein the protective cover is disposed above a camera or a fingerprint module of a terminal.