WO2023173855A1

WO2023173855A1 - Glass cover plate and preparation method therefor, housing and electronic device

Info

Publication number: WO2023173855A1
Application number: PCT/CN2022/139172
Authority: WO
Inventors: 张宗辉; 唐中帜
Original assignee: Oppo广东移动通信有限公司
Priority date: 2022-03-15
Filing date: 2022-12-15
Publication date: 2023-09-21
Also published as: CN114466550B; CN114466550A

Abstract

Provided in the present application are a glass cover plate and a preparation method therefor, a housing and an electronic device. The glass cover plate comprises: a first light-transmitting portion; a second light-transmitting portion, which is spaced apart from the first light-transmitting portion; and a light-blocking portion, which is located between the first light-transmitting portion and the second light-transmitting portion, and is configured to prevent light entering the first light-transmitting portion and light entering the second light-transmitting portion from passing through the light-blocking portion to generate light crosstalk, wherein the crystallinity of the light-blocking portion is greater than that of the first light-transmitting portion, and the crystallinity of the light-blocking portion is greater than that of the second light-transmitting portion. The glass cover plate has good mechanical strength, and the light-blocking portion thereof has good light crosstalk prevention performance.

Description

Glass cover plate and preparation method thereof, housing and electronic equipment

Technical field

The present application relates to the technical field of electronic equipment, and specifically relates to a glass cover plate and a preparation method thereof, a housing and an electronic equipment.

Background technique

Current health detection equipment such as heart rate detection equipment, blood oxygen detection equipment, etc. include a light emitter and a light receiver. After the light emitter emits light, it enters the light receiver after being reflected by the living body. The light receiver detects the intensity of the reflected light. Changes to achieve health monitoring of living organisms. In order to prevent the light emitted by the emitter from directly entering the light receiver when passing through the glass cover and causing light channeling, one or more optical windows are usually opened in the opaque glass cover. The materials between the opaque glass cover and the light-transmitting part of the window are different. , the joint bonding performance is poor.

Contents of the invention

The first embodiment of the present application provides a glass cover, which includes:

the first light-transmitting part;

a second light-transmitting part, the second light-transmitting part being spaced apart from the first light-transmitting part; and

A light-blocking part, the light-blocking part is located between the first light-transmitting part and the second light-transmitting part, the light-blocking part is used to prevent the light entering the first light-transmitting part from entering the The light from the second light-transmitting part passes through the light-blocking part to channel light, wherein the crystallinity of the light-blocking part is greater than the crystallinity of the first light-transmitting part, and the crystallinity of the light-blocking part is greater than The crystallinity of the second light-transmitting part.

A second embodiment of the present application provides a method for preparing a glass cover, which includes:

providing a first glass substrate; and

The first glass substrate is subjected to ion exchange and crystallization to obtain the glass cover plate. The glass cover plate includes a first light-transmitting part, a second light-transmitting part and a light-blocking part. The second light-transmitting part The light-blocking portion is spaced apart from the first light-transmitting portion; the light-blocking portion is located between the first light-transmitting portion and the second light-transmitting portion, and the light-blocking portion is used to prevent entry into the first light-transmitting portion. The light in the light part and the light entering the second light-transmitting part pass through the light-blocking part, and the crystallinity of the light-blocking part is greater than the crystallinity of the first light-transmitting part, and the light-blocking part The crystallinity of the light part is greater than the crystallinity of the second light-transmitting part.

The third embodiment of the present application provides a housing, which includes:

The glass cover plate described in the embodiments of this application or the glass cover plate produced by the method described in the embodiments of this application; and

The housing body is arranged around the outer periphery of the glass cover and is connected to the glass cover.

A fourth embodiment of the present application provides an electronic device, which includes:

The glass cover plate described in the embodiments of this application or the glass cover plate produced by the method described in the embodiments of this application;

A light emitter, which is provided on one side of the glass cover or the housing, close to the first light-transmitting part of the glass cover, and is used to illuminate the first light-transmitting part. emerging ray; and

A light receiver, the light receiver and the light emitter are arranged on the same side of the glass cover or the housing and close to the second light-transmitting part in the glass cover, for receiving The portion of the light that passes through the first light-transmitting part and is reflected into the second light-transmitting part.

Description of the drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings required to be used in the embodiments will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings without exerting creative efforts.

Figure 1 is a schematic structural diagram of a glass cover plate according to an embodiment of the present application.

FIG. 2 is a schematic cross-sectional structural view of a glass cover plate along the O-O direction in FIG. 1 according to an embodiment of the present application.

Figure 3 is a schematic structural diagram of a glass cover plate according to another embodiment of the present application.

Figure 4 is a schematic structural diagram of a glass cover plate according to another embodiment of the present application.

FIG. 5 is a schematic flow chart of a method for preparing a glass cover according to the first embodiment of the present application.

FIG. 6 is a schematic structural diagram of the preparation process of the glass cover plate according to the first embodiment of the present application.

Figure 7 is a schematic flow chart of a method for preparing a glass cover plate according to the second embodiment of the present application.

Figure 8 is a schematic structural diagram of the preparation process of the glass cover plate according to the second embodiment of the present application.

Figure 9 is a schematic flow chart of a method for preparing a glass cover plate according to the third embodiment of the present application.

Figure 10 is a schematic structural diagram of the preparation process of the glass cover plate according to the third embodiment of the present application.

Figure 11 is a schematic structural diagram of the first glass substrate according to the third embodiment of the present application.

Figure 12 is a schematic flow chart of a method for preparing a glass cover plate according to the fourth embodiment of the present application.

Figure 13 is a schematic structural diagram of the preparation process of the glass cover plate according to the fourth embodiment of the present application.

Figure 14 is a schematic flow chart of a method for preparing a glass cover plate according to the fifth embodiment of the present application.

Figure 15 is a schematic structural diagram of the preparation process of the glass cover plate according to the fifth embodiment of the present application.

Figure 16 is a schematic flow chart of a method for preparing a glass cover according to the sixth embodiment of the present application.

Figure 17 is a schematic structural diagram of the preparation process of the glass cover plate according to the sixth embodiment of the present application.

Figure 18 is a schematic flow chart of a method for preparing a glass cover plate according to the seventh embodiment of the present application.

Figure 19 is a schematic flow chart of a method for preparing a glass cover according to the eighth embodiment of the present application.

Figure 20 is a schematic diagram of a housing according to an embodiment of the present application.

Figure 21 is a schematic cross-sectional structural view of the housing along the direction A-A in Figure 20 according to an embodiment of the present application.

Figure 22 is a schematic diagram of the principle of the glass cover plate preparation process in Embodiment 1 of the present application.

Figure 23 is a schematic diagram of the principle of the glass cover plate preparation process in Embodiment 2 of the present application.

Figure 24 is a schematic diagram of the principle of the glass cover plate preparation process in Example 3 of the present application.

Figure 25 is a schematic structural diagram of the first glass substrate in Embodiment 4 of the present application.

Figure 26 is a schematic cross-sectional structural diagram of the first glass substrate in Figure 25 of the present application along the Q-Q direction.

Figure 27 is a schematic structural diagram of the glass cover produced in Example 4 of the present application.

Figure 28 is a schematic cross-sectional structural diagram of the glass cover plate in Figure 27 of the present application along the Q-Q direction.

Figure 29 is a schematic diagram of an electronic device according to an embodiment of the present application.

FIG. 30 is a schematic cross-sectional structural diagram of an electronic device according to an embodiment of the present application along the P-P direction in FIG. 29 .

Figure 31 is a circuit block diagram of an electronic device according to an embodiment of the present application.

Figure 32 is a schematic diagram of an electronic device according to yet another embodiment of the present application.

Figure 33 is a circuit block diagram of an electronic device according to yet another embodiment of the present application.

Explanation of reference symbols:

100-glass cover plate, 10-first light-transmitting part, 30-second light-transmitting part, 50-light-blocking part, 51-crystalline particles, 100a-first glass substrate, 10a-first part, 30a-th Part two, 50a-third part, 100b-second glass substrate, 50b-connection part, 100'-protective layer, 300-casing, 310-casing body, 311-accommodating cavity, 400-electronic equipment, 410 -Light emitter, 420-display component, 430-light receiver, 440-wristband, 441-wearing slot, 450-processor, 470-memory.

Detailed ways

In a first aspect, this application provides a glass cover plate, which includes:

the first light-transmitting part;

Wherein, the glass cover plate satisfies the relational expression:

40%≤R-R1≤90%; and

40%≤R-R2≤90%;

Wherein, R is the crystallinity of the light-blocking part, R1 is the crystallinity of the first light-transmitting part, and R2 is the crystallinity of the second light-transmitting part.

Wherein, the light-blocking part has crystal particles, and the particle size d of the crystal particles ranges from 1 μm ≤ d ≤ 200 μm, or from 2 μm ≤ d ≤ 50 μm.

Wherein, the first light-transmitting part, the light-blocking part and the second light-transmitting part are an integral structure; the components of the first light-transmitting part, the light-blocking part and the third light-transmitting part The components of the two light-transmitting parts have the same general chemical formula.

Wherein, the first light-transmitting part includes a first metal cation, the second light-transmitting part includes a first metal cation, the light-blocking part includes a second metal cation, the first metal cation and the second metal cation are The elements of the metal cations are different, and the valence states of the first metal cation and the second metal cation are the same.

Wherein, the first metal cations include lithium ions, sodium ions, potassium ions, rubidium ions, cesium ions, silver ions, magnesium ions, aluminum ions, calcium ions, strontium ions, barium ions, yttrium ions, zinc ions, copper ions , at least one of gold ions; the second metal cation includes lithium ions, sodium ions, potassium ions, rubidium ions, cesium ions, silver ions, magnesium ions, aluminum ions, calcium ions, strontium ions, barium ions, yttrium ions At least one of ions, zinc ions, copper ions, and gold ions.

Wherein, in the wavelength range of 300nm to 1500nm, the range of the light transmittance T1 of the first light-transmitting part is T1 ≥ 20%, and the range of the light transmittance T2 of the second light-transmitting part is T2 ≥ 20% , the range of the light transmittance T of the light blocking part is T≤80%×T1 and T≤80%×T2.

Wherein, the first light-transmitting part is at least one of silicate glass, aluminosilicate glass, phosphate glass, aluminophosphate glass, borate glass, and aluminate glass; and the second light-transmitting part is The light part is at least one of silicate glass, aluminosilicate glass, phosphate glass, aluminophosphate glass, borate glass, and aluminate glass; the light blocking part is silicate glass, aluminum At least one of silicate glass, phosphate glass, aluminophosphate glass, borate glass and aluminate glass.

In a second aspect, this application provides a method for preparing a glass cover, which includes:

providing a first glass substrate; and

The first glass substrate is subjected to ion exchange and crystallization to obtain a glass cover plate. The glass cover plate includes a first light-transmitting part, a second light-transmitting part and a light-blocking part. The second light-transmitting part and The first light-transmitting parts are arranged at intervals; the light-blocking part is located between the first light-transmitting part and the second light-transmitting part, and the light-blocking part is used to prevent entry into the first light-transmitting part. The light rays entering the second light-transmitting part pass through the light-blocking part, and the crystallinity of the light-blocking part is greater than the crystallinity of the first light-transmitting part, and the light-blocking part The crystallinity is greater than the crystallinity of the second light-transmitting part.

Wherein, the ion exchange and crystallization of the first glass substrate to obtain the glass cover plate includes:

Perform ion exchange on the first glass substrate to obtain a second glass substrate. The second glass substrate includes a first light-transmitting part, a second light-transmitting part and a connecting part. The first light-transmitting part The connection part is spaced apart from the second light-transmitting part; the connecting part is located between the first light-transmitting part and the second light-transmitting part; and

The second glass base material is heat-treated to crystallize the connecting portion to form a light-blocking portion, the light-blocking portion being used to prevent light entering the first light-transmitting portion from entering the second light-transmitting portion. Part of the light passes through the light-blocking part to cause light channeling, and the crystallinity of the light-blocking part is greater than the crystallinity of the first light-transmitting part and greater than the crystallinity of the second light-transmitting part.

Wherein, the first glass substrate includes a first part, a second part and a third part, the first part and the second part are spaced apart, and the third part is located between the first part and the Between the second parts; the opposite sides of the first part protrude from the third part, and the opposite sides of the second part protrude from the third part;

Performing ion exchange on the first glass substrate to obtain a second glass substrate includes:

Perform cation exchange on the first glass substrate, so that cation exchange occurs on the surfaces of the first part, the second part and the third part, and the third part forms the connection part; and

Remove the portions of the first portion that protrude from the connecting portion on opposite sides to obtain the first light-transmitting portion, and remove the portions of the second portion that protrude from the connecting portion on opposite sides to obtain The second light-transmitting part is used to obtain a second glass substrate.

Wherein, the first glass base material includes a first light-transmitting part, a second light-transmitting part and a third part, the first light-transmitting part and the second light-transmitting part are spaced apart, and the third part is located at between the first light-transmitting part and the second light-transmitting part;

Form a protective layer on the surfaces of the first light-transmitting part and the second light-transmitting part; and

The third part is subjected to cation exchange so that the third part forms the connecting part to obtain a second glass substrate.

Wherein, the first glass substrate includes a first metal cation, and performing ion exchange on the first glass substrate to obtain a second glass substrate includes:

The first glass substrate is placed in a salt melt or salt solution having a second metal cation, or the first glass substrate is contacted with a salt powder or oxide powder having a second metal cation, at a temperature A displacement reaction occurs between at least part of the first metal cations and the second metal cations in the first glass substrate at 300°C to 900°C to obtain the second glass substrate, where the first metal cations and the second metal cations are The elements of the second metal cation are different, and the valence states of the first metal cation and the second metal cation are the same.

Wherein, the first glass substrate includes a first part, a second part and a third part, the first part and the second part are spaced apart, and the third part is located between the first part and the Between the second parts; the opposite sides of the third part protrude from the first part, and the opposite sides of the third part protrude from the second part;

Cation exchange is performed on the first glass substrate, so that cation exchange occurs on the surfaces of the first part, the second part and the third part, so that the first part forms the first light-transmitting part , the second part forms the second light-transmitting part; and

The portions of the third portion protruding from the first light-transmitting portion and the second light-transmitting portion on opposite sides are removed to obtain the connecting portion and a second glass substrate.

Wherein, the first glass substrate includes a first part, a second part and a connecting part, the first part and the second part are spaced apart, and the connecting part is located between the first part and the second part. between departments;

Form a protective layer on the surface of the connecting portion; and

The first part and the second part are subjected to cation exchange, so that the first part forms the first light-transmitting part, and the second part forms the second light-transmitting part, so as to obtain the second Glass substrate.

Wherein, the heat treatment of the second glass substrate to crystallize the connection portion to form a light-blocking portion includes:

Heat treatment is performed at temperatures Te to Te1 to cause the connection portion to crystallize to form a light-blocking portion, where Te is the crystallization temperature of the connection portion, Te1 is the crystallization temperature of the first light-transmitting portion, and Te2 is the crystallization temperature of the second light-transmitting part, and Te<Te1=Te2.

Wherein, the first glass substrate includes a first metal cation, and performing ion exchange and crystallization on the first glass substrate to obtain the glass cover includes:

The first glass substrate is placed in a salt melt or salt solution having a second metal cation, or the first glass substrate is contacted with a salt powder or oxide powder having a second metal cation, at a temperature Te to Te1 or Te to Te2, at least part of the first metal cations in the first glass substrate are replaced with the second metal cations and crystallized to obtain the glass cover plate, where Te is the The crystallization temperature of the light-blocking part, Te1 is the crystallization temperature of the first light-transmitting part, the crystallization temperature of the second light-transmitting part is Te2, and Te<Te1, Te<Te2; wherein, the The elements of the first metal cation and the second metal cation are different, and the valence states of the first metal cation and the second metal cation are the same.

In a third aspect, this application provides a housing, which includes:

The glass cover plate described in the second aspect of this application or the glass cover plate produced by the method described in the second aspect of this application; and

In a fourth aspect, this application provides an electronic device, which includes:

The glass cover plate described in the second aspect of this application or the glass cover plate produced by the method described in the second aspect of this application;

A light emitter, the light emitter is provided on the glass cover plate and is disposed close to the first light-transmitting part in the glass cover plate, and is used for emitting light to the first light-transmitting part; and

A light receiver, the light receiver and the light emitter are arranged on the same side of the glass cover and close to the second light-transmitting part in the glass cover, for receiving all the light transmitted through it. The first light-transmitting part is reflected into the second light-transmitting part.

Wherein, the electronic device further includes a processor, the processor is electrically connected to the light emitter and the light receiver respectively, the processor is used to control the light emitter to emit the light, and control the light The receiver receives the portion of the light that passes through the first light-transmitting part and is reflected into the second light-transmitting part.

In order to enable those in the technical field to better understand the solutions of the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only These are part of the embodiments of this application, but not all of them. Based on the embodiments in this application, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of this application.

The terms "first", "second", etc. in the description and claims of this application and the above-mentioned drawings are used to distinguish different objects, rather than describing a specific sequence. Furthermore, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusion. For example, a process, method, system, product or device that includes a series of steps or units is not limited to the listed steps or units, but optionally also includes steps or units that are not listed, or optionally also includes Other steps or units inherent to such processes, methods, products or devices.

It should be noted that, for convenience of description, in the embodiments of the present application, the same reference numerals represent the same components, and for the sake of simplicity, detailed descriptions of the same components in different embodiments are omitted.

Photoplethysmography (Photo Plethysmo Graphic, PPG) is based on a light-emitting diode light source (LED light source) and a light receiver. The LED emits light, such as green light, which passes through the tissues and arteries and veins in the skin and is absorbed and reflected Back to the photodiode PD. The absorption of light by muscles, bones, veins and other tissues is basically unchanged, but the blood in the arteries flows, and the absorption of light naturally changes. When we convert light into electrical signals, it is precisely because the absorption of light by arteries changes and the absorption of light by other tissues remains basically unchanged, that the resulting signals can be divided into DC signals and AC signals. Extracting the AC signals can reflect the characteristics of blood flow, thereby enabling the detection of blood oxygen, heart rate, pulse, etc.

Currently, photoplethysmography is often used in portable health detection equipment such as smart watches and smart bracelets to detect the health status of living entities such as the human body in real time and provide timely alarms when abnormalities occur. Therefore, the detection accuracy of portable health testing equipment is particularly important.

In order to avoid the loss of light during the transmission process as much as possible, and to prevent the light emitted from the emitter from passing through the glass cover and entering the light receiver without being reflected by the living body, causing interference to the detection results, the glass cover of the health detection equipment is The positions corresponding to the emitter and light receiver will be designed to be transparent or light-transmitting, while other parts will be opaque. Therefore, the glass cover is usually formed by opening one or more through holes in an opaque base material, and placing transparent components in the through holes. The transparent components need to be fixed to the opaque glass cover through adhesion or other methods. On the board, the integration effect of the glass cover is poor, and the mechanical properties of the formed glass cover are poor. When subjected to external force, friction or after a period of use, the components of the glass cover are easy to fall off, affecting the glass. The service life of the cover. In addition, two-color injection molding can also be used to form a glass cover plate with a light-transmitting part and an opaque part. Although the formed glass cover plate has good integrity, this method is usually applied to thermoplastic resin, and the formed glass cover plate is wear-resistant. The light-transmitting part is easily scratched after being used for a period of time, which affects the accuracy of the test results.

Referring to FIG. 1 and FIG. 2 , an embodiment of the present application provides a glass cover 100 , which includes a first light-transmitting part 10 , a second light-transmitting part 30 and a light-blocking part 50 . The second light-transmitting part 30 is spaced apart from the first light-transmitting part 10; the light-blocking part 50 is located between the first light-transmitting part 10 and the second light-transmitting part 30, and the light-blocking part 50 is used to prevent entry into the first light-transmitting part The light rays 10 and the light entering the second light-transmitting part 30 pass through the light-blocking part 50 , and the crystallinity R of the light-blocking part 50 is greater than the crystallinity R1 of the first light-transmitting part 10 and greater than the light-blocking part 50 . The crystallinity R of 50 is the crystallinity R2 of the second light-transmitting part 30 .

The light blocking portion 50 is located between the first light transmitting portion 10 and the second light transmitting portion 30 . It can be understood that the light blocking portion 50 only needs to be at least partially located between the first light transmitting portion 10 and the second light transmitting portion 30 . , in addition, the light-blocking part 50 can also extend to other positions of the first light-transmitting part 10 and the second light-transmitting part 30; the light-blocking part 50 can be connected with the first light-transmitting part 10 and the second light-transmitting part 30; The light part 50 may also be spaced apart from the first light-transmitting part 10 and the second light-transmitting part 30 respectively, and then be connected through other parts.

Optionally, the light blocking portion 50 is arranged around one or more of the first light transmitting portion 10 or the second light transmitting portion 30 . In other words, when the first light-transmitting part 10 and the second light-transmitting part 30 are both one, the light-blocking part 50 may surround the first light-transmitting part 10 , or surround the second light-transmitting part 30 , or surround the first light-transmitting part. 10 and is arranged around the second light-transmitting part 30 . When there are a plurality of first light-transmitting parts 10 and a plurality of second light-transmitting parts 30 , the light-blocking part 50 may be arranged around one or more of the plurality of first light-transmitting parts 10 and the plurality of second light-transmitting parts 30 . When there is one first light-transmitting part 10 and multiple second light-transmitting parts 30 , the light-blocking part 50 may be provided around one or more of the first light-transmitting part 10 and the plurality of second light-transmitting parts 30 . In other embodiments, the light-blocking part 50 may not surround the first light-transmitting part 10 or the second light-transmitting part 30 , but may be disposed between the first light-transmitting part 10 and the second light-transmitting part 30 . Compared with the light blocking part 50 being disposed between the first light transmitting part 10 and the second light transmitting part 30 , the light blocking part 50 surrounds one or more of the first light transmitting part 10 or the second light transmitting part 30 This setting can have better light blocking effect. Optionally, the number of the first light-transmitting parts 10 may be, but is not limited to, 1, 2, 3, 4, 5, etc., and the specific number is not specifically limited in this application. Optionally, the number of the second light-transmitting parts 30 may be, but is not limited to, 1, 2, 3, 4, 5, etc., and the specific number is not specifically limited in this application. Optionally, the number of light blocking portions 50 may be, but is not limited to, 1, 2, 3, 4, 5, etc., and the specific number is not specifically limited in this application. The number of the second light-transmitting parts 30 and the number of the first light-transmitting parts 10 may be the same or different, and are not specifically limited in this application. Optionally, the first light-transmitting part 10 and the second light-transmitting part 30 are evenly distributed on the glass cover 100 . FIG. 1 is only an arrangement of the first light-transmitting part 10 , the second light-transmitting part 30 and the light-blocking part 50 , and should not be understood as limiting the glass cover 100 in each embodiment of the present application.

The glass cover 100 of the embodiment of the present application can be applied to, but is not limited to, wearable devices (such as smart glasses, smart watches, smart bracelets, etc.), blood oxygen monitors, heart rate detectors, pulse detectors, mobile phones, and tablets. Computers, laptops, e-readers, game consoles and other electronic devices 400 with health detection functions (as shown in Figures 29, 30 and 32). The glass cover 100 of the present application can be used as the housing 300 of the electronic device 400 (as shown in FIG. 20 ), and can be, for example, but not limited to, the back cover of a smart watch, the back cover of a smart bracelet, or a detection component of a blood oxygen monitor. The casing, the casing of the detection component of the heart rate detector, the casing of the detection component of the pulse detector, etc. In addition, the glass cover 100 of the present application can also be used as a part of the casing 300 of the electronic device 400, disposed on the casing 300, and used as a window for the detection module (such as a light emitter and a light receiver) of the electronic device 400.

The glass cover 100 in the embodiment of the present application includes a first light-transmitting part 10 , a second light-transmitting part 30 and a light-blocking part 50 . The light-blocking portion 50 is located between the first light-transmitting portion 10 and the second light-transmitting portion 30 . The crystallinity R of the light-blocking portion 50 is greater than the crystallinity R1 of the first light-transmitting portion 10 and greater than the crystallinity of the second light-transmitting portion 30 Degree R2. As a result, the disturbing light that enters the first light-transmitting part 10 or the second light-transmitting part 30 and is directed to the light-blocking part 50 is scattered and reflected by the crystal particles in the light-blocking part 50 when passing through the light-blocking part 50 Or absorb, so that the interfering light passing through the light blocking part 50 is greatly attenuated, and the light entering the first light transmitting part 10 and the light entering the second light transmitting part 30 are prevented from passing through the light blocking part 50 . Therefore, when the glass cover 100 is applied to the electronic device 400 with a health detection function, the signal-to-noise ratio of the optical signal can be improved, thereby improving the accuracy of health detection. In addition, the glass cover 100 of the present application can be made of a whole glass substrate, and through ion exchange and crystallization, the first light-transmitting part 10 , the second light-transmitting part 30 and the light-blocking part 50 of the obtained glass cover 100 It is an integrated structure, so that the glass cover 100 has a better integrated structure, and thus has better mechanical properties such as mechanical strength and bending strength.

In some embodiments, the thickness of the glass cover 100 may be, but is not limited to, 0.3 mm to 1.3 mm; specifically, the thickness of the housing 300 body may be, but is not limited to, 0.3 mm, 0.4 mm, 0.5 mm, or 0.6 mm. , 0.7mm, 0.8mm, 0.9mm, 1mm, 1.3mm, etc. When the glass cover 100 is too thin, it cannot provide good support and protection, and the mechanical strength cannot well meet the requirements of the electronic device 400 glass cover 100. When the glass cover 100 is too thick, the mechanical strength increases. The weight of the electronic device 400 affects the feel of the electronic device 400 and results in poor user experience.

In some embodiments, the glass cover 100 satisfies the relationships: 40%≤R-R1≤90% and 40%≤R-R2≤90%. In other words, the difference between the crystallinity R of the light-blocking part 50 and the crystallinity R1 of the first light-transmitting part 10 is greater than or equal to 40% and less than or equal to 90%; the difference between the crystallinity R of the light-blocking part 50 and the second light-transmitting part 30 The difference in crystallinity R2 is greater than or equal to 40% and less than or equal to 90%. Further, the glass cover 100 satisfies the relational expressions: 60%≤R-R1≤90% and 60%≤R-R2≤90%. Furthermore, the glass cover 100 satisfies the relationship expressions: 70%≤R-R1≤90% and 70%≤R-R2≤90%. Specifically, R-R1 may be, but is not limited to, 40%, 45%, 50%, 55%, 60%, 65%, 70%, 72%, 75%, 77%, 80%, 83%, 85% , 88%, 90%, etc. Specifically, R-R2 may be, but is not limited to, 40%, 45%, 50%, 55%, 60%, 65%, 70%, 72%, 75%, 77%, 80%, 83%, 85% , 88%, 90%, etc. If R-R1 and R-R2 are too small, the crystallinity of the light-blocking part 50 is too low, and the scattering, reflection and absorption effects on the stray light are too small, and the anti-channeling effect cannot be achieved well. R-R1 The larger R-R1 and R-R2 are, the better the anti-fluorescence effect will be. However, when R-R1 and R-R2 are too large, the difficulty of process preparation will be increased.

"Crystallinity" refers to the mass percentage of crystals in the region or part. Specifically, it can be calculated by the following formula: R=M _crystal /(M _crystal +M _amorphous )×100%. Among them, M _crystal represents the quality of the crystal contained in the region or part, and M _amorphous represents the quality of the amorphous crystal contained in the region or part.

In some embodiments, the crystallinity R1 of the first light-transmitting part 10 ranges from 0≤R1≤30%. Furthermore, the range of the crystallinity R1 of the first light-transmitting part 10 is 0≤R1≤20%. Furthermore, the range of the crystallinity R1 of the first light-transmitting part 10 is 0≤R1≤10%. Specifically, the crystallinity R1 of the first light-transmitting part 10 may be, but is not limited to, 0%, 1%, 3%, 5%, 8%, 10%, 12%, 15%, 18%, 20%, 23 %, 25%, 27%, 30%, etc.

In some embodiments, the crystallinity R2 of the second light-transmitting part 30 ranges from 0≤R2≤30%. Furthermore, the crystallinity R2 of the second light-transmitting part 30 ranges from 0 ≤ R2 ≤ 20%. Furthermore, the range of the crystallinity R2 of the second light-transmitting part 30 is 0≤R2≤10%. Specifically, the crystallinity R2 of the second light-transmitting part 30 may be, but is not limited to, 0%, 1%, 3%, 5%, 8%, 10%, 12%, 15%, 18%, 20%, 23 %, 25%, 27%, 30%, etc.

In some embodiments, the crystallinity R of the light blocking part 50 ranges from 45% ≤ R1 ≤ 95%. Furthermore, the range of the crystallinity R of the light blocking part 50 is 50%≤R1≤95%. Furthermore, the range of the crystallinity R of the light blocking portion 50 is 60%≤R1≤95%. Furthermore, the range of the crystallinity R of the light blocking portion 50 is 70%≤R1≤95%. Specifically, the crystallinity R of the light blocking part 50 may be, but is not limited to, 45%, 50%, 55%, 60%, 65%, 70%, 72%, 75%, 77%, 80%, 83%, 85%, 88%, 90%, 95%, etc.

Optionally, the crystallinity R1 of the first light-transmitting part 10 and the crystallinity R2 of the second light-transmitting part 30 may be the same or different. When the crystallinity R1 of the first light-transmitting part 10 is equal to the crystallinity R2 of the second light-transmitting part 30 , the manufacturing process of the glass cover 100 can be simplified.

Referring to FIG. 2 , in some embodiments, the light blocking part 50 has crystal particles 51 (ie, crystal particles), and the particle diameter d of the crystal particles 51 ranges from 1 μm ≤ d ≤ 200 μm. Furthermore, the particle diameter d of the crystal particles 51 is in the range of 2 μm ≤ d ≤ 50 μm. Furthermore, the particle diameter d of the crystal particles 51 is in the range of 5 μm ≤ d ≤ 30 μm. Specifically, the particle diameter d of the crystal particles 51 may be, but is not limited to, 1 μm, 2 μm, 3 μm, 4 μm, 6 μm, 8 μm, 10 μm, 15 μm, 20 μm, 30 μm, 40 μm, 60 μm, 80 μm, 100 μm, 120 μm, 140 μm, 160 μm, 180μm, 200μm, etc. When the size of the crystal particles 51 is too small (for example, smaller than the wavelength of the incident light), the light is easily diffracted in the light-blocking portion 50 and passes through the light-blocking portion 50 , affecting the anti-channeling effect of the light-blocking portion 50 . As the size of the crystal particles 51 increases, the light blocking effect of the light blocking portion 50 gradually increases. However, when the size of the crystal particles 51 is greater than 200 μm, the number of grain boundaries is not large enough to form enough scattering, causing the light blocking portion 50 to The light-blocking effect gradually decreases, and the mechanical strength of the light-blocking part 50 also decreases.

The "particle diameter of the crystal particles 51" refers to the equivalent spherical diameter of the crystal particles 51, that is, an irregular-shaped object whose volume is the same as the diameter of a sphere. "Grain boundary" refers to the interface between crystal grains, or the cross section between crystal grains and amorphous state.

Referring to FIGS. 3 and 4 , in some embodiments, the light blocking portion 50 has a preset pattern to provide a decorative effect, so that the glass cover 100 has a better appearance.

Optionally, the preset pattern may be, but is not limited to, graphics (such as flower graphics, animal graphics, character graphics, etc.), text (such as logo), etc. The preset pattern can be designed according to the desired appearance effect, and is not specifically limited in this application. In some embodiments, the preset pattern may be a heart-shaped pattern as shown in Figure 3, or a quadrangular pattern as shown in Figure 4.

In some embodiments, the first light-transmitting part 10 , the light-blocking part 50 and the second light-transmitting part 30 are an integral structure. Specifically, the first light-transmitting part 10 , the light-blocking part 50 and the second light-transmitting part 30 are made of a single piece of glass base material and undergo processes such as ion exchange and crystallization to form an integrated structure of the first light-transmitting part 10 and the light-blocking part 30 . part 50 and the second light-transmitting part 30 . In this way, there is no process interface such as gluing, splicing, and welding between the first light-transmitting part 10, the light-blocking part 50, and the second light-transmitting part 30. As a result, the glass cover 100 has better integrity and better mechanical properties such as mechanical strength and bending strength.

In some embodiments, the components of the first light-transmitting part 10 , the components of the light-blocking part 50 and the components of the second light-transmitting part 30 have the same chemical formula. "Chemical formula" is used to represent one or several classes of compounds in which at least one group is changeable. In the embodiment of the present application, the components of the first light-transmitting part 10 , the components of the light-blocking part 50 and the components of the second light-transmitting part 30 have the same chemical formula, which can be understood as the first light-transmitting part 10 The light-blocking part 50 and the second light-transmitting part 30 include different metal cations, but the mole fractions of the metal cations are equal, and the components and proportions of other elements except the metal cations are the same. In this way, the first light-transmitting part 10, the light-blocking part 50 and the second light-transmitting part 30 can have better integration, and can be obtained from the entire glass substrate after cation exchange and crystallization, without gluing, splicing, or welding. and other process interfaces. As a result, the glass cover 100 has better integrity and better mechanical properties such as mechanical strength and bending strength.

In some embodiments, within unit volume, the total number of moles of each element composing the first light-transmitting part 10 , the total number of moles of each element composing the light-blocking part 50 , and the total number of moles of each element composing the second light-transmitting part 30 The number of moles is equal. In other words, within the unit volume, the total number of atoms of each element included in the first light-transmitting part 10 , the total number of atoms of each element included in the light-blocking part 50 , and the total number of atoms of each element included in the second light-transmitting part 30 are equal. In this way, the first light-transmitting part 10 , the light-blocking part 50 and the second light-transmitting part 30 can be obtained from the entire glass substrate after cation exchange and crystallization. There are no process interfaces such as gluing, splicing, and welding, and the performance is better. of oneness. As a result, the glass cover 100 has better integrity and better mechanical properties such as mechanical strength and bending strength.

In some embodiments, the first light-transmitting part 10 , the light-blocking part 50 and the second light-transmitting part 30 have the same mole fraction of at least one of silicon, phosphorus, oxygen, aluminum, and boron. For example, in some embodiments, the first light-transmitting part 10 , the light-blocking part 50 and the second light-transmitting part 30 all have the same mole fraction of silicon element and oxygen element. In some embodiments, the first light-transmitting part 10 , the light-blocking part 50 and the second light-transmitting part 30 all have the same mole fraction of silicon element, oxygen element and boron element. In some embodiments, the first light-transmitting part 10 , the light-blocking part 50 and the second light-transmitting part 30 all have the same mole fraction of silicon element, oxygen element and phosphorus element. In some embodiments, the first light-transmitting part 10 , the light-blocking part 50 and the second light-transmitting part 30 all have the same mole fraction of silicon element, oxygen element, phosphorus element and boron element. In some embodiments, the first light-transmitting part 10 , the light-blocking part 50 and the second light-transmitting part 30 all have the same mole fraction of aluminum element and oxygen element. In this way, the first light-transmitting part 10 , the light-blocking part 50 and the second light-transmitting part 30 can be obtained from the entire glass substrate after cation exchange and crystallization. There are no process interfaces such as gluing, splicing, and welding, and the performance is better. of oneness. As a result, the glass cover 100 has better integrity and better mechanical properties such as mechanical strength and bending strength.

Optionally, within the wavelength range of 300 nm to 1500 nm, the range of the light transmittance T1 of the first light transmitting part 10 is T1 ≥ 20%. Further, the light transmittance of the first light-transmitting part 10 is greater than or equal to 30%. Furthermore, the light transmittance of the first light-transmitting part 10 is greater than or equal to 60%. Furthermore, the light transmittance of the first light-transmitting part 10 is greater than or equal to 85%. Specifically, the light transmittance of the first light-transmitting part 10 may be, but is not limited to, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, 95%, 98%, etc. The greater the light transmittance of the first light transmitting part 10 , the better. The greater the light transmittance of the first light transmitting part 10 , the smaller the loss of light when passing through the first light transmitting part 10 . The glass cover 100 is used The detection accuracy and precision of the electronic device 400 are higher. In some embodiments, the light transmittance of the first light-transmitting part 10 is greater than or equal to 90%. Specifically, it may be, but is not limited to, 90%, 92%, 94%, 95%, 96%, 98%, 99%. etc., which can better reduce the loss of light when passing through the first light-transmitting part 10 .

In some embodiments, when the light transmittance of the first light-transmitting part 10 is low, the light transmission of the first light-transmitting part 10 can be compensated or corrected through algorithms, software calculations, increasing the intensity and brightness of the light emitted by the light emitter, etc. The loss caused by the light is lower, and the detection error of the electronic device 400 is reduced.

Optionally, within the wavelength range of 300 nm to 1500 nm, the range of the light transmittance T1 of the second light transmitting part 30 is T1 ≥ 20%. Further, the light transmittance of the second light-transmitting part 30 is greater than or equal to 30%. Furthermore, the light transmittance of the second light-transmitting part 30 is greater than or equal to 60%. Furthermore, the light transmittance of the second light-transmitting part 30 is greater than or equal to 85%. Specifically, the light transmittance of the second light-transmitting part 30 may be, but is not limited to, 20%, 30%, 40%, 50%, 60%, 70%, 80%, 90%, 95%, 98%, etc. The greater the light transmittance of the second light transmitting part 30 , the better. The greater the light transmittance of the second light transmitting part 30 , the smaller the loss of light when passing through the second light transmitting part 30 . The use of the glass cover 100 The detection accuracy and precision of the electronic device 400 are higher. In some embodiments, the light transmittance of the second light-transmitting part 30 is greater than or equal to 90%. Specifically, it may be, but is not limited to, 90%, 92%, 94%, 95%, 96%, 98%, 99%. etc., which can better reduce the loss of light when passing through the second light-transmitting part 30 .

In some embodiments, when the light transmittance of the second light-transmitting part 30 is low, the light transmission of the second light-transmitting part 30 can be compensated or corrected through algorithms, software calculations, increasing the intensity and brightness of the light emitted by the light emitter, etc. The loss caused by the light is lower, and the detection error of the electronic device 400 is reduced.

In some embodiments, the light transmittance of the first light transmitting part 10 and the light transmittance of the second light transmitting part 30 may be the same. In other embodiments, the light transmittance of the first light transmitting part 10 and the second light transmitting part 30 may be the same. The light transmittance of the light part 30 may also be different, and is not specifically limited in this application. In a specific embodiment, when the number of at least one of the first light-transmitting parts 10 or the second light-transmitting parts 30 is multiple, the number of the plurality of first light-transmitting parts 10 or the plurality of second light-transmitting parts 30 is The light transmittance can be different. When applied to the electronic device 400 with a detection function, the plurality of first light-transmitting parts 10 or the plurality of second light-transmitting parts 30 can have different characteristics according to the color and intensity of the light emitted by different light emitters. The light transmittance, for example, when the intensity of the light emitted by the light emitter is high, the light transmittance of the first light transmitting part 10 or the second light transmitting part 30 corresponding to the light emitter can be reduced; If the intensity is relatively weak, the light transmittance of the first light-transmitting part 10 or the second light-transmitting part 30 corresponding to the light emitter can be increased.

Optionally, within the wavelength range of 300 nm to 1500 nm, the light transmittance T of the light blocking part 50 ranges from T≤80%×T1 and T≤80%×T2. Furthermore, the range of the light transmittance T of the light blocking portion 50 is T≤70%×T1 and T≤70%×T2. Furthermore, the range of the light transmittance T of the light blocking portion 50 is T≤60%×T1 and T≤60%×T2. Furthermore, the range of the light transmittance T of the light blocking portion 50 is T≤%×T1 and T≤%×T2. Specifically, the range of the light transmittance T of the light blocking part 50 may be, but is not limited to, 0.8T1, 0.75T1, 0.7T1, 0.65T1, 0.6T1, 0.55T1, 0.5T1, 0.45T1, 0.4T1, 0.3T1 , 0.2T1, etc. Specifically, the range of the light transmittance T of the light blocking part 50 may be, but is not limited to, 0.8T2, 0.75T2, 0.7T2, 0.65T2, 0.6T2, 0.55T2, 0.5T2, 0.45T2, 0.4T2, 0.3T2 , 0.2T2, etc. The smaller the light transmittance T of the light blocking portion 50 is, the better the light channeling effect of the light blocking portion 50 is. The electronic device 400 using the glass cover 100 can detect a higher signal-to-noise ratio and a higher detection accuracy.

In a specific embodiment, the light transmittance T1 of the first light-transmitting part 10 is equal to the light transmittance T2 of the second light-transmitting part 30 = 90%, and the light transmittance T of the light-blocking part 50 is 44% × T1 = 44%. ×90%=39.6%.

In some embodiments, the raw material of the glass cover may be, but is not limited to, at least one of silicate glass, aluminosilicate glass, phosphate glass, aluminophosphate glass, borate glass, and aluminate glass. kind. Optionally, the first light-transmitting part 10 may be, but is not limited to, at least one of silicate glass, aluminosilicate glass, phosphate glass, aluminophosphate glass, borate glass, and aluminate glass. . The second light-transmitting part 30 may be, but is not limited to, at least one of silicate glass, aluminosilicate glass, phosphate glass, aluminophosphate glass, borate glass, and aluminate glass. The light blocking part 50 may be, but is not limited to, at least one of silicate glass, aluminosilicate glass, phosphate glass, aluminophosphate glass, borate glass, and aluminate glass. "At least one" means more than or equal to one.

In some embodiments, the first light-transmitting part 10 includes a first metal cation, the second light-transmitting part 30 includes a first metal cation, the light-blocking part 50 includes a second metal cation, and the relationship between the first metal cation and the second metal cation is The elements are different, and the first metal cation and the second metal cation have the same valence state. In this way, the glass cover 100 can be made of a whole glass substrate, and after processes such as ion exchange and crystallization, the first light-transmitting part 10 , the light-blocking part 50 and the second light-transmitting part 30 can be formed into an integrated structure. In this way, there is no process interface such as gluing, splicing, and welding between the first light-transmitting part 10, the light-blocking part 50, and the second light-transmitting part 30. As a result, the glass cover 100 has better integrity and better mechanical properties such as mechanical strength and bending strength.

In some embodiments, the first metal cation includes lithium ion (Li ⁺ ), sodium ion (Na ⁺ ), potassium ion (K ⁺ ), rubidium ion (Rb ⁺ ), cesium ion (Cs ⁺ ), silver ion (Ag ⁺ ), magnesium ion (Mg ²⁺ ), aluminum ion (Al ³⁺ ), calcium ion (Ca ²⁺ ), strontium ion (Sr ²⁺ ), barium ion (Ba ²⁺ ), yttrium ion (Y ³⁺ ) , at least one of zinc ions (Zn ²⁺ ), copper ions (Cu ²⁺ ), and gold ions (Au ²⁺ ).

In some embodiments, the second metal cation includes lithium ions, sodium ions, potassium ions, rubidium ions, cesium ions, silver ions, magnesium ions, aluminum ions, calcium ions, strontium ions, barium ions, yttrium ions, zinc ions, At least one of copper ions and gold ions.

In a specific embodiment, the first light-transmitting part 10 includes Na-Al-Si glass, the second light-transmitting part 30 includes Na-Al-Si glass, and the light-blocking part 50 includes Li-Al-Si glass. The first metal cation is Na ⁺ and the second metal cation is Li ⁺ . Li-Al-Si glass has a lower crystallization temperature than Na-Al-Si glass. Therefore, it can be carried out above the crystallization temperature of Li-Al-Si glass and below the crystallization temperature of Na-Al-Si glass. Heat treatment to crystallize Li-Al-Si glass and not crystallize Na-Al-Si glass, so that the crystallinity of the light-blocking portion 50 is greater than that of the first light-transmitting portion 10 and greater than the second light-transmitting portion The crystallinity of part 30.

The glass cover plate 100 in the embodiment of the present application can be prepared by the method of the following embodiments of the present application. In addition, it can also be prepared by other methods. The preparation method of the embodiment of the present application is only one or more of the glass cover plate 100 of the present application. Various preparation methods should not be construed as limitations to the glass cover 100 provided in the embodiments of the present application.

Please refer to Figure 5 and Figure 6 , the preparation method of the glass cover 100 according to the first embodiment of the present application includes:

S201, provide the first glass substrate 100a; and

Alternatively, the first glass substrate 100a may be, but is not limited to, a silicate glass substrate, an aluminosilicate glass substrate, a phosphate glass substrate, an aluminophosphate glass substrate, or a borate glass substrate. , at least one of aluminate glass substrates. In some embodiments, the first glass substrate 100a can also be a strengthened silicate glass substrate, a strengthened aluminosilicate glass substrate, a strengthened phosphate glass substrate, or a strengthened aluminum phosphate. At least one of a salt glass substrate, a strengthened borate glass substrate, and a strengthened aluminate glass substrate. The strengthening method can be, but is not limited to, chemical ion exchange strengthening (chemical strengthening), physical tempering, ion implantation strengthening and other methods.

S202, perform ion exchange and crystallization on the first glass substrate 100a to obtain the glass cover 100. The glass cover 100 includes the first light-transmitting part 10, the second light-transmitting part 30 and the light-blocking part 50. The light-transmitting part 30 is spaced apart from the first light-transmitting part 10; the light-blocking part 50 is located between the first light-transmitting part 10 and the second light-transmitting part 30. The light-blocking part 50 is used to prevent the light entering the first light-transmitting part 10 from interfering with the light. The light entering the second light-transmitting part 30 passes through the light-blocking part 50 to channel light. The crystallinity of the light-blocking part 50 is greater than the crystallinity of the first light-transmitting part 10 and greater than the crystallinity of the second light-transmitting part 30 .

Alternatively, the first glass substrate 100a is placed in a salt melt or salt solution having a second metal cation, or the first glass substrate 100a is contacted with a salt powder or oxide powder having a second metal cation, This causes the first metal cation and the second metal cation in the first glass substrate 100a to undergo an ion replacement reaction, forming a structure in which one part is prone to crystallization (the crystallization temperature is lower) and the other part is difficult to crystallize (the crystallization temperature is higher). ), and causing it to at least partially crystallize (crystallize) to obtain the glass cover 100 .

For a detailed description of the same features of this embodiment and the above-mentioned embodiment, please refer to the above-mentioned embodiment and will not be described again here.

The preparation method of the glass cover 100 in the embodiment of the present application performs ion exchange on the first glass substrate 100a, so that the first glass substrate 100a forms a structure in which one part is prone to crystallization and the other part is not prone to crystallization (in other words, the first glass substrate 100a is changed. The crystallization performance of one part of the glass substrate 100a remains unchanged), so that when the temperature is between the crystallization temperature of the part that is prone to crystallization and the crystallization temperature of the part that is not prone to crystallization, the part that is prone to crystallization will The crystal forms the light-blocking portion 50 , and the temperature of the portion where crystallization is less likely to occur does not cause crystallization to form the first light-transmitting portion 10 and the second light-transmitting portion 30 . Therefore, the crystallinity R of the light-blocking part 50 is greater than the crystallinity R1 of the first light-transmitting part 10 and greater than the crystallinity R2 of the second light-transmitting part 30 . As a result, the disturbing light that enters the first light-transmitting part 10 or the second light-transmitting part 30 and is directed toward the light-blocking part 50 is scattered by the crystal particles 51 in the light-blocking part 50 when passing through the light-blocking part 50 . Reflection or absorption, thereby greatly attenuating the interfering light passing through the light-blocking part 50 , preventing the light entering the first light-transmitting part 10 and the light entering the second light-transmitting part 30 from passing through the light-blocking part 50 . When the glass cover 100 is applied to an electronic device 400 with a health detection function, the signal-to-noise ratio of the optical signal can be improved, thereby improving the accuracy of health detection. In addition, the glass cover 100 of the present application uses a whole first glass substrate 100a, and the first light-transmitting part 10 and the second light-transmitting part 10 of the glass cover 100 are formed through ion exchange and crystallization. The portion 30 and the light-blocking portion 50 are formed into an integral structure, so that the glass cover 100 has a better integrated structure and thus has better mechanical properties such as mechanical strength and bending strength.

Please refer to FIG. 7 and FIG. 8 , the preparation method of the glass cover 100 according to the second embodiment of the present application includes:

S301, provide the first glass substrate 100a; and

In some embodiments, the first glass substrate 100a includes a first metal cation. Alternatively, the first metal cation may be, but is not limited to, lithium ion (Li ⁺ ), sodium ion (Na ⁺ ), potassium ion (K ⁺ ), rubidium ion (Rb ⁺ ), cesium ion (Cs ⁺ ), silver Ions (Ag ⁺ ), magnesium ions (Mg ²⁺ ), aluminum ions (Al ³⁺ ), calcium ions (Ca ²⁺ ), strontium ions (Sr ²⁺ ), barium ions (Ba ²⁺ ), yttrium ions (Y ³⁺ ), zinc ions (Zn ²⁺ ), copper ions (Cu ²⁺ ), and gold ions (Au ²⁺ ).

In other embodiments, the first glass substrate 100a includes a second metal cation. Alternatively, the second metal cation may be, but is not limited to, lithium ion (Li ⁺ ), sodium ion (Na ⁺ ), potassium ion (K ⁺ ), rubidium ion (Rb ⁺ ), cesium ion (Cs ⁺ ), silver Ions (Ag ⁺ ), magnesium ions (Mg ²⁺ ), aluminum ions (Al ³⁺ ), calcium ions (Ca ²⁺ ), strontium ions (Sr ²⁺ ), barium ions (Ba ²⁺ ), yttrium ions (Y ³⁺ ), zinc ions (Zn ²⁺ ), copper ions (Cu ²⁺ ), and gold ions (Au ²⁺ ).

For detailed descriptions of other features of the first glass substrate 100a, please refer to the corresponding descriptions of the above embodiments, which will not be described again here.

S302, perform ion exchange on the first glass substrate 100a to obtain a second glass substrate 100b. The second glass substrate 100b includes the first light-transmitting part 10, the second light-transmitting part 30 and the connecting part 50b. The light part 10 and the second light-transmitting part 30 are spaced apart; the connecting part 50b is located between the first light-transmitting part 10 and the second light-transmitting part 30; and

Alternatively, the ion exchange method may be, but is not limited to, high temperature molten salt bath, high temperature and high pressure salt solution immersion, solid phase ion exchange and other methods.

In some embodiments, when the first glass substrate 100a includes a first metal cation, the first glass substrate 100a is placed in a salt melt or salt solution having a second metal cation, or the first glass substrate 100a is 100a is contacted with a solid powder such as a salt or an oxide having a second metal cation, and a substitution reaction occurs between at least part of the first metal cation and the second metal cation in the first glass substrate 100a at a temperature of 300°C to 900°C to obtain Second glass substrate 100b. The second glass substrate 100b includes a first light-transmitting part 10, a second light-transmitting part 30 and a connecting part 50b. The first light-transmitting part 10 and the second light-transmitting part 30 are spaced apart; the connecting part 50b is located in the first light-transmitting part. 10 and the second light-transmitting part 30 . The crystallization temperature Te of the connection part 50b is lower than the crystallization temperature Te1 of the first light-transmitting part 10 and lower than the crystallization temperature Te2 of the second light-transmitting part 30; in other words, Te<Te1 and Te<Te2. In the embodiments of this application, when it comes to the numerical range a to b, unless otherwise specified, it means including the endpoint value a and including the endpoint value b. For example, the above temperature of 300°C to 900°C means that the ion exchange temperature can be any value between 300°C and 900°C, including the endpoint of 300°C and the endpoint of 900°C.

In other embodiments, when the first glass substrate 100a includes a second metal cation, the first glass substrate 100a is placed in a salt melt or salt solution having the first metal cation, or the first glass substrate 100a is The material 100a is contacted with solid powder such as salt or oxide having the first metal cation at a temperature of 300°C to 900°C, so that at least part of the second metal cations in the first glass substrate 100a are replaced with the first metal cations. reaction to obtain a second glass substrate 100b.

Optionally, the crystallization temperature Te1 of the first light-transmitting part 10 and the crystallization temperature Te2 of the second light-transmitting part 30 may be the same or different. When the crystallization temperature Te1 of the first light-transmitting part 10 is the same as the crystallization temperature Te2 of the second light-transmitting part 30 , the preparation process of the glass cover 100 can be simplified.

Alternatively, the salt molten liquid having the first metal cation may be, but is not limited to, NaNO ₃ molten liquid, Na ₂ SO ₄ molten liquid, NaCl molten liquid, Na ₃ PO ₄ molten liquid, KNO ₃ molten liquid, KCl molten liquid , K ₂ SO ₄ melt, K ₃ PO ₄ melt, LiCl melt, LiNO ₃ melt, Li ₂ SO ₄ melt, Ca(NO ₃ ) ₂ melt, Ba(NO ₃ ) ₂ melt, etc. of at least one. Alternatively, the salt solution having the first metal cation may be, but is not limited to, NaNO ₃ solution, Na ₂ SO ₄ solution, NaCl solution, Na ₃ PO ₄ solution, KNO ₃ solution, KCl solution, LiCl solution, LiNO ₃ solution , at least one of Ca(NO ₃ ) ₂ solution, Ba(NO ₃ ) ₂ solution, CaCl ₂ , BaCl ₂ solution, etc. Alternatively, when solid powder is used for ion replacement, the solid powder such as salt or oxide having the first metal cation can be, but is not limited to, sodium oxide powder, sodium carbonate powder, NaNO ₃ powder, Na ₃ PO ₄ powder, NaHCO ₃ powder, MgO powder, MgOH powder, CaO powder, Ca(OH) ₂ powder, lithium oxide powder, lithium carbonate powder, etc.

Alternatively, the salt molten liquid having the second metal cation may be, but is not limited to, NaNO ₃ molten liquid, Na ₂ SO ₄ molten liquid, NaCl molten liquid, Na ₃ PO ₄ molten liquid, KNO ₃ molten liquid, KCl molten liquid , K ₂ SO ₄ melt, K ₃ PO ₄ melt, LiCl melt, LiNO ₃ melt, Li ₂ SO ₄ melt, Ca(NO ₃ ) ₂ melt, Ba(NO ₃ ) ₂ melt, etc. of at least one. Alternatively, the salt solution with the second metal cation may be, but is not limited to, NaNO ₃ solution, Na ₂ SO ₄ solution, NaCl solution, Na ₃ PO ₄ solution, KNO ₃ solution, KCl solution, LiCl solution, LiNO ₃ solution , at least one of Ca(NO ₃ ) ₂ solution, Ba(NO ₃ ) ₂ solution, CaCl ₂ , BaCl ₂ solution, etc. Alternatively, when solid powder is used for ion replacement, the solid powder such as salt or oxide with the second metal cation can be, but is not limited to, sodium oxide powder, sodium carbonate powder, NaNO ₃ powder, Na ₃ PO ₄ powder, NaHCO ₃ powder, MgO powder, MgOH powder, CaO powder, Ca(OH) ₂ powder, lithium oxide powder, lithium carbonate powder, etc.

It should be noted that when the first metal cation and the second metal cation perform ion exchange, cations of the same valence state are usually used for ion exchange. For example, Li ⁺ and Na ⁺ perform ion exchange; or K ⁺ and Na ⁺ perform ion exchange; or Li ⁺ and K ⁺ perform ion exchange; or Ca ²⁺ and Ba ²⁺ perform ion exchange, etc.

Optionally, the temperature of ion exchange is any temperature or any temperature range between 300°C and 900°C. Further, the temperature of ion exchange is between 300°C and 900°C. Specifically, the temperature of ion exchange can be, but is not limited to, 300°C, 320°C, 350°C, 380°C, 400°C, 420°C, 450°C, 480°C, 500°C, 520°C, 550°C, 580°C, 600°C ℃, 650℃, 700℃, 750℃, 800℃, 850℃, 900℃, etc. If the ion exchange temperature is too low, the ion exchange rate is too slow, which affects production efficiency; as the ion exchange temperature increases, the ion exchange rate will be faster, but if the ion exchange temperature is too high, the first glass substrate 100a will soften or Crystallization, therefore, the temperature of ion exchange is not likely to be too high, and should be performed under the condition of ensuring that the first glass substrate 100a does not soften or prematurely crystallize.

Optionally, the time of ion exchange can be 0.5h to 48h. Specifically, the time of ion exchange can be, but is not limited to, 0.5h, 1h, 2h, 3h, 5h, 8h, 10h, 13h, 16h, 20h, 22h, 24h, 27h, 30h, 33h, 35h, 38h, 40h, 43h, 45h, 48h, etc. The time of ion exchange can control the depth of ion exchange of the first glass substrate 100a. If the time of ion exchange is too short, the depth of ion exchange will be too shallow, and the final crystallinity of the middle part of the light blocking part 50 will not be enough. Isolate crosstalk light. If the ion exchange time is too long, production efficiency will be affected.

Optionally, the connecting portion 50b is disposed around one or more of the first light-transmitting portion 10 or the second light-transmitting portion 30 . In other words, when the first light-transmitting part 10 and the second light-transmitting part 30 are both one, the connecting part 50b can surround the first light-transmitting part 10 , or surround the second light-transmitting part 30 , or surround the first light-transmitting part 10 and is arranged around the second light-transmitting part 30 . When there are a plurality of first light-transmitting parts 10 and a plurality of second light-transmitting parts 30 , the connecting part 50b may be provided around one or more of the plurality of first light-transmitting parts 10 and the plurality of second light-transmitting parts 30 . When there is one first light-transmitting part 10 and a plurality of second light-transmitting parts 30 , the connecting part 50b may be provided around one or more of the first light-transmitting part 10 and the plurality of second light-transmitting parts 30 . In other embodiments, the connecting part 50b may not surround the first light-transmitting part 10 or the second light-transmitting part 30 , but may be disposed between the first light-transmitting part 10 and the second light-transmitting part 30 . Compared with the connection part 50b being provided between the first light-transmitting part 10 and the second light-transmitting part 30 , the connection part 50b is provided around one or more of the first light-transmitting part 10 or the second light-transmitting part 30 At this time, the obtained glass cover 100 can have better light-blocking effect. As long as the connecting part 50b is disposed between the first light-transmitting part 10 and the second light-transmitting part 30, the resulting light-blocking part 50 can prevent light from occurring between the first light-transmitting part 10 and the second light-transmitting part 30. That is, the form placed on the connecting portion 50b is not specifically limited in this application and can be designed according to the appearance effect and the shape of the electronic device 400. The illustrations in this application only show one or more possible ways, and should not be used. This should be understood as a limitation on the glass cover 100 of the present application.

S303, perform heat treatment on the second glass base material 100b to crystallize the connecting portion 50b to form the light-blocking portion 50. The light-blocking portion 50 is used to prevent the light entering the first light-transmitting portion 10 from entering the second light-transmitting portion 30. Light passes through the light-blocking portion 50 to channel light, and the crystallinity of the light-blocking portion 50 is greater than the crystallinity of the first light-transmitting portion 10 and greater than the crystallinity of the second light-transmitting portion 30 .

Optionally, heat treatment is performed at temperatures Te to Te1 or temperatures Te to Te2, so that the connection portion 50b is crystallized to form the light blocking portion 50. In other words, when the crystallization temperature of the connection part 50b is to the crystallization temperature of the first light-transmitting part 10, or when the crystallization temperature of the connection part 50b is to the crystallization temperature of the second light-transmitting part 30 (when Te1 and Te2 are not equal) , the heat treatment temperature is lower than the one with a lower crystallization temperature), the heat treatment is performed to cause crystallization of the connecting portion 50b, and the crystallization forms the light-blocking portion 50, the first light-transmitting portion 10 and the second light-transmitting portion 10 with a higher crystallinity. No crystallization occurs in the portion 30 or only a small amount of crystallization occurs, so that the crystallinity of the light-blocking portion 50 of the obtained glass cover 100 is greater than the crystallinity of the first light-transmitting portion 10 and greater than the crystallinity of the second light-transmitting portion 30 .

When the temperature of the heat treatment is too low, none of the connecting part 50b, the first light-transmitting part 10 and the second light-transmitting part 30 will crystallize, or only a very small part will crystallize, so that the obtained light-blocking part 50 The degree of crystallinity is too small to achieve a good anti-light channeling effect; when the temperature of the heat treatment is too high, partial crystallization of the first light-transmitting part 10 and the second light-transmitting part 30 will occur, resulting in the first The light transmittance of the light-transmitting part 10 and the second light-transmitting part 30 is too low, and the loss of light when passing through the first light-transmitting part 10 and the second light-transmitting part 30 is too large. The electronic device 400 using the glass cover 100 The detection accuracy and precision are reduced.

In some embodiments, the crystallization temperature of the connecting part 50b is 550°C, and the crystallization temperature of the first light-transmitting part 10 and the second light-transmitting part 30 is 750°C, then the heat treatment temperature may be 520°C to 650°C. Specifically, the temperature of the heat treatment may be, but is not limited to, 520°C, 530°C, 540°C, 550°C, 560°C, 570°C, 580°C, 590°C, 600°C, 610°C, 620°C, 630°C, 640°C , 650℃, etc.

In some embodiments, the heat treatment time is 1 h to 12 h. Specifically, the heat treatment time may be, but is not limited to, 1h, 2h, 3h, 5h, 6h, 7h, 8h, 9h, 10h, 11h, 12h, etc. If the heat treatment time is too short, the connection part 50b cannot be fully crystallized, and the light blocking part 50 formed has poor anti-channeling effect; if the heat treatment time is too long, production efficiency will be affected, and the first light-transmitting part 10 and the second light-transmitting part 10 Partial crystallization may also occur in the portion 30 , affecting the light transmittance of the first light-transmitting portion 10 and the second light-transmitting portion 30 .

Referring to Figures 9 and 10, a method for preparing a glass cover 100 according to a third embodiment of the present application includes:

S401, provide a first glass substrate 100a; the first glass substrate 100a includes a first part 10a, a second part 30a and a third part 50a, the first part 10a and the second part 30a are spaced apart, and the third part 50a is located at the Between the first part 10a and the second part 30a; the opposite sides of the first part 10a protrude from the third part 50a, and the opposite sides of the second part 30a protrude from the third part 50a;

Referring to Figure 11, optionally, in this embodiment, the third part 50a surrounds the outer peripheral edge of the first part 10a and surrounds the outer peripheral edge of the second part 30a; the third part 50a is connected to the outer peripheral edge of the first part 10a and connected to The outer peripheral edge of the second part 30a is provided. In other words, the first part 10a, the second part 30a and the third part 50a have an integrated structure and have the same raw material composition. The third part 50a has a first surface and a second surface that are opposite to each other. The first part 10a protrudes from the first surface and protrudes from the second surface, and steps are respectively formed on opposite sides of the third part 50a. The second part 30a protrudes from the first surface and protrudes from the second surface, and steps are respectively formed on opposite sides of the third part 50a. That is, the first part 10a and the second part 30a each form a step on the first surface side of the third part 50a, and each form a step on the second surface side of the third part 50a. That is to say, the thickness of the first part 10a is greater than the thickness of the third part 50a, and the thickness of the second part 30a is also greater than the thickness of the third part 50a.

Optionally, the first glass substrate 100a has a first metal cation. In other words, the first glass substrate 100a has a metal compound that is not easy to crystallize. In other words, the first glass substrate 100a has a metal compound with a relatively low crystallization temperature.

Optionally, the first glass substrate 100a may be, but is not limited to, Na-Al-Si glass. The molar composition of Na-Al-Si glass is 25Na ₂ O-5Al ₂ O ₃ -70SiO ₂ , and Na ⁺ ions are evenly distributed. on the first glass substrate 100a.

S402, perform cation exchange on the first glass substrate 100a, so that cation exchange occurs on the surfaces of the first part 10a, the second part 30a and the third part 50a, and the third part 50a forms the connection part 50b;

Alternatively, the first glass substrate 100a is placed in a salt melt or salt solution (such as _LiNO3 melt) with a second metal cation, or the first glass substrate 100a is mixed with a salt with a second metal cation. Powder or oxide powder contacts (second metal cations such as Li ⁺ ions), and the first metal cations (such as Na ⁺ ions) and second metal cations (such as Li ⁺ ions) undergo a substitution reaction, so that the first metal cations on the surfaces of the first part 10a, the second part 30a and the third part 50a are replaced by second metal cations, thereby comparing Crystallization easily occurs in the original first glass substrate 100a. Since the thickness of the first part 10a and the second part 30a is relatively large and the thickness of the third part 50a is small, only the surface parts of the first part 10a and the second part 30a undergo ion replacement, and the original third part 50a is retained in the middle part. For a metal cation, the thickness of the third portion 50a is thinner. Therefore, the entire third portion 50a forms an easily crystallized glass with a second metal cation, that is, the connecting portion 50b. When the first glass substrate 100a is Na-Al-Si glass, the part after ion exchange becomes Li-Al-Si glass. Compared with Na-Al-Si glass, Li-Al-Si glass has lower Crystallization temperature.

S403, remove the portions of the first portion 10a that protrude from the connecting portion 50b on opposite sides to obtain the first light-transmitting portion 10, and remove the portions of the second portion 30a that protrude from the connecting portion 50b on both opposite sides to obtain the second transparent portion. light part 30 to obtain the second glass substrate 100b; and

Optionally, first cool the first glass substrate 100a after S402 processing, and perform processing (such as cutting, polishing, machining CNC, etc.) to remove the protrusions on the opposite sides of the first portion 10a. The part of the part 50b, that is, the parts on the opposite sides of the first part 10a that are prone to crystallization are removed to obtain the first light-transmitting part 10. At the same time, the parts on the opposite sides of the second part 30a that protrude from the connecting part 50b are removed. The second portion 30a faces the portions of the surfaces on both sides that are prone to crystallization, so as to obtain the second light-transmitting portion 30 . Optionally, during processing, the surface of the first light-transmitting part 10 and the second light-transmitting part 30 connecting the first surface is flush with the first surface (that is, in the same plane), and the first light-transmitting part 10 and the second light-transmitting part 30 are connected to the first surface. The surface of the light-transmitting part 30 connected to the second surface is flush with the second surface (that is, in the same plane). For detailed description of the second glass substrate 100b, please refer to the description of the corresponding part of the above embodiment, and details will not be described again here.

S404, perform heat treatment on the second glass base material 100b to crystallize the connecting portion 50b to form the light-blocking portion 50. The light-blocking portion 50 is used to prevent the light entering the first light-transmitting portion 10 from entering the second light-transmitting portion 30. Light passes through the light-blocking portion 50 to channel light, and the crystallinity of the light-blocking portion 50 is greater than the crystallinity of the first light-transmitting portion 10 and greater than the crystallinity of the second light-transmitting portion 30 .

For detailed description of step S404, please refer to the description of the corresponding part of the above embodiment, and details will not be described again here. For a detailed description of the same features of this embodiment and the above-mentioned embodiment, please refer to the above-mentioned embodiment and will not be described again here.

Please refer to Figure 12 and Figure 13 , the preparation method of the glass cover 100 according to the fourth embodiment of the present application includes:

S501, provide a first glass substrate 100a; the first glass substrate 100a includes a first light-transmitting part 10, a second light-transmitting part 30 and a third part 50a, the first light-transmitting part 10 and the second light-transmitting part 30 are spaced apart It is provided that the third part 50a is located between the first light-transmitting part 10 and the second light-transmitting part 30;

Optionally, in this embodiment, the third part 50a surrounds the outer peripheral edge of the first light-transmitting part 10 and surrounds the outer peripheral edge of the second light-transmitting part 30; the third part 50a connects to the outer peripheral edge of the first light-transmitting part 10 and It is connected to the outer peripheral edge of the second light-transmitting part 30 . In other words, the first light-transmitting part 10 , the second light-transmitting part 30 and the third part 50 a have an integrated structure and have the same raw material composition. The third part 50a has an opposite first surface and a second surface. The surface of the first light-transmitting part 10 and the second light-transmitting part 30 connecting the first surface is flush with the first surface (that is, in the same plane). The surface of the first light-transmitting part 10 and the second light-transmitting part 30 connecting the second surface is flush with the second surface (that is, in the same plane).

Optionally, the first glass substrate 100a has a first metal cation. Optionally, the first glass substrate 100a may be, but is not limited to, Na-Al-Si glass. The molar composition of Na-Al-Si glass is 25Na ₂ O-5Al ₂ O ₃ -70SiO ₂ , and Na ⁺ ions are evenly distributed. on the first glass substrate 100a. The first metal cation may be, but is not limited to, Na ⁺ ion.

S502, form a protective layer 100' on the surfaces of the first light-transmitting part 10 and the second light-transmitting part 30;

Optionally, a protective layer 100' is formed on the exposed surfaces of the first light-transmitting part 10 and the second light-transmitting part 30 using methods such as gluing, spraying, and coating. The protective layer 100' can be, but is not limited to, a spray ink layer, a photocurable adhesive protective layer 100' (UV glue layer), a silicon dioxide layer, a titanium dioxide layer, a zirconium dioxide layer, etc. More specifically, on the plane where the first light-transmitting part 10 and the second light-transmitting part 30 are connected to the first surface of the third part 50a, and on the plane where the first light-transmitting part 10 and the second light-transmitting part 30 are connected with the third part 50a, A protective layer 100' is formed on the planes connected to the second surface of the portion 50a. The protective layer 100' is used to prevent the first metal cations in the first light-transmitting part 10 and the second light-transmitting part 30 from being replaced by second metal cations during cation exchange.

S503, perform cation exchange on the third part 50a so that the third part 50a forms the connection part 50b to obtain the second glass substrate 100b; and

Optionally, a protective layer 100 is provided on the surface of the first light-transmitting part 10 and the second light-transmitting part 30, and the first glass substrate 100a is placed in a salt molten liquid or salt solution (such as LiNO ₃ molten liquid), or contact the first glass substrate 100a with a salt powder or an oxide powder having a second metal cation (the second metal cation, such as Li ⁺ ion), at an ion exchange temperature of 300°C to 900°C for a third time. The first metal cation (such as Na ⁺ ion) on the surface of the third part 50a and the second metal cation (such as Li ⁺ ion) undergo a substitution reaction, so that the first metal cation on the surface of the third part 50a is replaced by the second metal cation, forming a phase. The connecting portion 50b is easier to crystallize than the first light-transmitting portion 10 and the second light-transmitting portion 30 . However, under the protection of the protective layer 100', the first light-transmitting part 10 and the second light-transmitting part 30 do not undergo ion exchange reaction.

Optionally, after step S503, the method further includes: removing the protective layer 100'.

S504, perform heat treatment on the second glass base material 100b to crystallize the connecting portion 50b to form the light-blocking portion 50. The light-blocking portion 50 is used to prevent the light entering the first light-transmitting portion 10 from interfering with the light entering the second light-transmitting portion 30. Light passes through the light-blocking portion 50 to channel light, and the crystallinity of the light-blocking portion 50 is greater than the crystallinity of the first light-transmitting portion 10 and greater than the crystallinity of the second light-transmitting portion 30 .

For detailed description of step S504, please refer to the description of the corresponding part of the above embodiment, and details will not be described again here. For a detailed description of the same features of this embodiment and the above-mentioned embodiment, please refer to the above-mentioned embodiment and will not be described again here.

Please refer to Figure 14 and Figure 15 , the preparation method of the glass cover 100 according to the fifth embodiment of the present application includes:

S601, provide a first glass substrate 100a; the first glass substrate 100a includes a first part 10a, a second part 30a and a third part 50a, the first part 10a and the second part 30a are spaced apart, and the third part 50a is located at the Between the first part 10a and the second part 30a; the opposite sides of the third part 50a protrude from the first part 10a, and the opposite sides of the third part 50a protrude from the second part 30a;

Optionally, in this embodiment, the third part 50a surrounds the outer peripheral edge of the first part 10a and surrounds the outer peripheral edge of the second part 30a; the third part 50a connects the outer peripheral edge of the first part 10a and connects the outer peripheral edge of the second part 30a. Margin settings. In other words, the first part 10a, the second part 30a and the third part 50a have an integrated structure and have the same raw material composition. Opposite sides of the third part 50a protrude from the first part 10a, and opposite sides of the third part 50a protrude from the second part 30a. Optionally, the third part 50a has a first surface and a second surface that are opposite to each other, the first part 10a is recessed on the first surface and is recessed on the second surface, and grooves are formed on opposite sides of the third part 50a. . The second part 30a is recessed on the first surface and recessed on the second surface, and grooves are respectively formed on opposite sides of the third part 50a. That is, the first part 10a and the second part 30a each form a groove on the first surface side of the third part 50a, and each form a groove on the second surface side of the third part 50a. That is to say, the thickness of the third part 50a is greater than the thickness of the first part 10a and greater than the thickness of the second part 30a.

Optionally, the first glass substrate 100a has a second metal cation. In other words, the first glass substrate 100a has a metal compound that is easy to crystallize. In other words, the first glass substrate 100a has a metal compound with a relatively high crystallization temperature.

Optionally, the first glass substrate 100a may be, but is not limited to, Li-Al-Si glass. The molar composition of Li-Al-Si glass is 20Li ₂ O-10Al ₂ O ₃ -70SiO ₂ , and Li ⁺ ions are evenly distributed. on the first glass substrate 100a.

S602, perform cation exchange on the first glass substrate 100a, so that cation exchange occurs on the surfaces of the first part 10a, the second part 30a, and the third part 50a. The first part 10a forms the first light-transmitting part 10, and the second part 100a forms the first light-transmitting part 10. The portion 30a forms the second light-transmitting portion 30;

Optionally, the first glass substrate 100a is placed in a salt melt or salt solution (such as NaNO ₃ melt) with a first metal cation, or the first glass substrate 100a is mixed with a salt with a first metal cation. The powder or oxide powder comes into contact, and at least part of the second metal cations (for example, Li ⁺ ) in the first glass substrate 100 a and the first metal cations (Na ⁺ ) undergo a displacement reaction at a temperature of 300°C to 900°C, so that the first The second metal cations on the surface of the first part 10a, the second part 30a and the third part 50a are replaced by the first metal cations, so that crystallization is less likely to occur than the original first glass substrate 100a. Since the thickness of the third part 50a is relatively large and the thickness of the first part 10a and the second part 30a is small, only the surface part of the third part 50a undergoes ion replacement, and the original second metal cations are retained in the middle part. The first part 10a and the second part 30a are thinner. The first part 10a forms the first light-transmitting part 10 of the hard-to-crystallize glass with the first metal cation, and the second part 30a forms the first light-transmitting part 10 of the hard-to-crystallize glass with the first metal cation. The second light-transmitting part 30. When the first glass substrate 100a is Li-Al-Si glass, the part after ion exchange becomes Na-Al-Si glass. Compared with Na-Al-Si glass, Li-Al-Si glass has lower Crystallization temperature.

S603, remove the parts of the third part 50a that protrude from the first light-transmitting part 10 and the second light-transmitting part 30 on opposite sides to obtain the connecting part 50b to obtain the second glass substrate 100b; and

Optionally, first cool the first glass substrate 100a after S602 processing, and perform processing (such as cutting, polishing, machining CNC, etc.) to remove the third portion 50a protruding from the opposite sides of the third portion 50a. The parts of the first light-transmitting part 10 and the second light-transmitting part 30, that is, the parts of the surfaces on opposite sides of the third part 50a that are prone to crystallization are removed to obtain the connecting part 50b. Optionally, during processing, make the surfaces of the first light-transmitting part 10 , the second light-transmitting part 30 and the connecting part 50 b facing the first surface flush (that is, in the same plane), and make the first light-transmitting part 10 , The surfaces of the second light-transmitting part 30 and the connecting part 50b facing the second surface are flush (that is, in the same plane). For detailed description of the second glass substrate 100b, please refer to the description of the corresponding part of the above embodiment, and details will not be described again here.

S604, perform heat treatment on the second glass base material 100b to crystallize the connecting portion 50b to form the light-blocking portion 50. The light-blocking portion 50 is used to prevent the light entering the first light-transmitting portion 10 from entering the second light-transmitting portion 30. Light passes through the light-blocking portion 50 to channel light, and the crystallinity of the light-blocking portion 50 is greater than the crystallinity of the first light-transmitting portion 10 and greater than the crystallinity of the second light-transmitting portion 30 .

For detailed description of step S604, please refer to the description of the corresponding part of the above embodiment, and details will not be described again here. For a detailed description of the same features of this embodiment and the above-mentioned embodiment, please refer to the above-mentioned embodiment and will not be described again here.

Please refer to Figure 16 and Figure 17 , the preparation method of the glass cover 100 according to the sixth embodiment of the present application includes:

S701, provide the first glass substrate 100a; the first glass substrate 100a includes a first part 10a, a second part 30a and a connecting part 50b. The first part 10a and the second part 30a are spaced apart, and the connecting part 50b is located in the first part. between 10a and Part 2 30a;

Optionally, in this embodiment, the connecting portion 50b surrounds the outer peripheral edge of the first portion 10a and surrounds the outer peripheral edge of the second portion 30a; the connecting portion 50b connects the outer peripheral edge of the first portion 10a and connects the outer peripheral edge of the second portion 30a. set up. In other words, the first part 10a, the second part 30a and the connecting part 50b are an integral structure and have the same raw material composition. The connecting part 50b has a first surface and a second surface opposite to each other. The surface of the first part 10a and the second part 30a connecting the first surface is flush with the first surface (that is, in the same plane). The first part 10a and the second part 30a are flush with each other. The surface of the two parts 30a connecting the second surface is flush with the second surface (that is, in the same plane).

S702, form the protective layer 100' on the surface of the connection part 50b;

Optionally, a protective layer 100' is formed on the exposed surface of the connection portion 50b using methods such as gluing, spraying, or coating. The protective layer 100' may be, but is not limited to, a spray ink layer or a photo-curing adhesive protective layer 100' ( UV adhesive layer), silicon dioxide coating, titanium dioxide layer, zirconium dioxide layer, etc. More specifically, the protective layer 100' is formed on both the first surface and the second surface of the connecting portion 50b. The protective layer 100' is used to prevent the second metal cations in the connection portion 50b from being replaced by the first metal cations during cation exchange.

S703, perform cation exchange on the first part 10a and the second part 30a, so that the first part 10a forms the first light-transmitting part 10, and the second part 30a forms the second light-transmitting part 30, to obtain the second glass substrate 100b. ;as well as

Optionally, the first glass substrate 100a with the protective layer 100' provided on the surface of the connecting portion 50b is placed in a salt molten liquid or a salt solution (such as NaNO ₃ molten liquid) containing the first metal cation, or the first The glass substrate 100a is in contact with the salt powder or oxide powder having the first metal cation (the first metal cation such as Na ⁺ ion), and the second metal cation ( A substitution reaction occurs with the first metal cation (for example, Li ⁺ ion) and the first metal cation (for example, Na ⁺ ion) to form the first light-transmitting part 10 that is less likely to crystallize than the connecting part 50b, and the second metal cation of the second part 30a is (for example, Li ⁺ ions) and the first metal cations (for example, Na ⁺ ions) undergo a substitution reaction to form the second light-transmitting portion 30 that is less likely to crystallize than the connecting portion 50b. However, under the protection of the protective layer 100', no ion exchange reaction occurs in the connecting portion 50b.

Optionally, after step S703, the method further includes: removing the protective layer 100'.

S704, perform heat treatment on the second glass base material 100b to crystallize the connecting part 50b to form the light blocking part 50. The light blocking part 50 is used to prevent the light entering the first light transmitting part 10 from entering the second light transmitting part 30. Light passes through the light-blocking portion 50 to channel light, and the crystallinity of the light-blocking portion 50 is greater than the crystallinity of the first light-transmitting portion 10 and greater than the crystallinity of the second light-transmitting portion 30 .

For detailed description of step S704, please refer to the description of the corresponding part of the above embodiment, and details will not be described again here. For a detailed description of the same features of this embodiment and the above-mentioned embodiment, please refer to the above-mentioned embodiment and will not be described again here.

Please refer to Figure 18, a method for preparing a glass cover 100 according to the seventh embodiment of the present application, which includes:

S801, provide a first glass substrate 100a, the first glass substrate 100a having a first metal cation; and

Alternatively, the first metal cation may be, but is not limited to, lithium ion (Li ⁺ ), sodium ion (Na ⁺ ), potassium ion (K ⁺ ), rubidium ion (Rb ⁺ ), cesium ion (Cs ⁺ ), silver Ions (Ag ⁺ ), magnesium ions (Mg ²⁺ ), aluminum ions (Al ³⁺ ), calcium ions (Ca ²⁺ ), strontium ions (Sr ²⁺ ), barium ions (Ba ²⁺ ), yttrium ions (Y ³⁺ ), zinc ions (Zn ²⁺ ), copper ions (Cu ²⁺ ), and gold ions (Au ²⁺ ).

The structure of the first glass substrate 100a of this embodiment may be the structure of the first glass substrate 100a of the above-mentioned third embodiment, or may be the structure of the first glass substrate 100a of the above-mentioned fourth embodiment. For details, please refer to the detailed description of the first glass substrate 100a in the third embodiment and the fourth embodiment, which will not be described again here.

S802, place the first glass substrate 100a in a salt melt or salt solution containing a second metal cation, or contact the first glass substrate 100a with a salt powder or oxide powder containing a second metal cation, at a temperature of Te to Te1 or Te to Te2, at least part of the first metal cations and the second metal cations in the first glass substrate 100a undergo a substitution reaction and crystallize to obtain the glass cover 100, where Te is the barrier The crystallization temperature of the light part 50 (that is, the crystallization temperature of the connection part 50b), Te1 is the crystallization temperature of the first light-transmitting part 10, Te2 is the crystallization temperature of the second light-transmitting part 30, and Te <Te1, Te<Te2.

The temperature during ion replacement is above the crystallization temperature (Te) of the second metal cation oxide and below the crystallization temperature (Te1 or Te2) of the first metal cation oxide. Therefore, when the first glass substrate 100a When the first metal cation is replaced by a second metal cation, the oxide of the second metal cation formed will then crystallize, thereby crystallizing without the need for a heat treatment step, thereby simplifying the process of preparing the glass cover 100 , reducing production costs.

The temperature of ion exchange and crystallization cannot be too low. When the temperature of ion exchange and crystallization is too low, the connection part 50b, the first light-transmitting part 10 and the second light-transmitting part 30 will not crystallize, or only the surface The layer crystallizes, and the crystallization depth is not enough, so that the crystallinity of the middle part of the light-blocking part 50 is not enough, and it cannot have a good anti-light channeling effect; when the temperature of ion exchange and crystallization is too high, the first light transmission The part 10 and the second light-transmitting part 30 will also undergo partial crystallization, so that the obtained light transmittance of the first light-transmitting part 10 and the second light-transmitting part 30 is too low, and the light passes through the first light-transmitting part 10 and the second light-transmitting part 30. The loss in the light-transmitting part 30 is too large, and the detection accuracy and precision of the electronic device 400 using the glass cover 100 are reduced.

In some embodiments, the ion exchange and crystallization temperature of the first glass substrate 100a may be, but is not limited to, 520°C to 650°C. Specifically, the ion exchange temperature of the first glass substrate 100a may be, but is not limited to, 520°C, 530°C, 540°C, 550°C, 560°C, 570°C, 580°C, 590°C, 600°C, 610°C, 620°C ℃, 630℃, 640℃, 650℃, etc.

Optionally, the ion exchange and crystallization time of the first glass substrate 100a may be 0.5h to 48h. Specifically, the time of ion exchange can be, but is not limited to, 0.5h, 1h, 2h, 3h, 5h, 8h, 10h, 13h, 16h, 20h, 22h, 24h, 27h, 30h, 33h, 35h, 38h, 40h, 43h, 45h, 48h, etc. If the time for ion exchange and crystallization is too short, a small proportion of ion exchange will occur, and it will be difficult for the oxide of the second metal cation to fully crystallize. The final degree of crystallization of the light blocking portion 50 will be too small, and it will not be able to play a very good role. The effect of preventing light channeling; or the final crystallinity of the first light-transmitting part 10 and the second light-transmitting part 30 is too large, which affects the light transmittance of the first light-transmitting part 10 and the second light-transmitting part 30 . If the time for ion exchange and crystallization is too long, production efficiency will be affected.

In some embodiments, when the first glass substrate 100a has the structure of the third embodiment, after step S802, the method of this embodiment further includes: removing the first portion 10a that crystallizes on the surface protruding from opposite sides. The portion of the connecting portion 50b is removed to obtain the first light-transmitting portion 10, and the portions of the second portion 30a with crystallization on the surface protruding from the connecting portion 50b on both sides are removed to obtain the second light-transmitting portion 30. For descriptions of other relevant features, please refer to the corresponding descriptions of the above third embodiment, and will not be described again here.

In other embodiments, when the first glass substrate 100a has the structure of the fourth embodiment, before step S802, the method of this embodiment further includes: connecting the first light-transmitting part 10 and the second light-transmitting part 30 A protective layer 100' is formed on the surface. After step S802, the method of this embodiment further includes: removing the protective layer 100'.

Please refer to Figure 19, a method for preparing a glass cover 100 according to the eighth embodiment of the present application, which includes:

S801', provide a first glass substrate 100a, the first glass substrate 100a having a second metal cation; and

Alternatively, the second metal cation may be, but is not limited to, lithium ion (Li ⁺ ), sodium ion (Na ⁺ ), potassium ion (K ⁺ ), rubidium ion (Rb ⁺ ), cesium ion (Cs ⁺ ), silver Ions (Ag ⁺ ), magnesium ions (Mg ²⁺ ), aluminum ions (Al ³⁺ ), calcium ions (Ca ²⁺ ), strontium ions (Sr ²⁺ ), barium ions (Ba ²⁺ ), yttrium ions (Y ³⁺ ), zinc ions (Zn ²⁺ ), copper ions (Cu ²⁺ ), and gold ions (Au ²⁺ ).

The structure of the first glass substrate 100a of this embodiment may be the structure of the first glass substrate 100a of the above-mentioned fifth embodiment, or may be the structure of the first glass substrate 100a of the above-mentioned sixth embodiment. For details, please refer to the detailed description of the first glass substrate 100a in the fifth embodiment and the sixth embodiment, which will not be described again here.

S802', place the first glass substrate 100a in the salt molten liquid or salt solution containing the first metal cation, or contact the first glass substrate 100a with the salt powder or oxide powder containing the first metal cation, and At the temperature Te to Te1 or Te to Te2, at least part of the second metal cations and the first metal cations in the first glass substrate 100a undergo a substitution reaction and crystallize to obtain the glass cover 100, wherein Te is the The crystallization temperature of the light-blocking part 50 (that is, the crystallization temperature of the connection part 50a), Te1 is the crystallization temperature of the first light-transmitting part 10, Te2 is the crystallization temperature of the second light-transmitting part 30, and Te<Te1, Te<Te2.

Alternatively, the first glass substrate 100a is placed in a salt melt or salt solution having a second metal cation, or the first glass substrate 100a is contacted with a salt powder or oxide powder having a first metal cation, When ion replacement is performed at a temperature Te to Te1 or Te to Te2, the temperature is above the crystallization temperature (Te) of the second metal cation oxide and is above the crystallization temperature (Te1 or Te2) of the first metal cation oxide. ) below, therefore, when the second metal cation in the first glass substrate 100a is replaced by the first metal cation, the oxide of the unreplaced second metal cation will then crystallize, thereby crystallizing without further processing. The heat treatment step simplifies the preparation process of the glass cover 100 and reduces the production cost.

In some embodiments, when the first glass substrate 100a has the structure of the fifth embodiment, after step S802', the method of this embodiment further includes: removing the third portion 50a that protrudes from the first portion on opposite sides. 10a and the second part 30a to obtain the connecting part 50b. For descriptions of other relevant features, please refer to the corresponding descriptions of the above-mentioned fifth embodiment, which will not be described again here.

In other embodiments, when the first glass substrate 100a has the structure of the sixth embodiment, before step S802', the method of this embodiment further includes: forming a protective layer 100' on the surface of the connection part 50b. After step S802', the method of this embodiment further includes: removing the protective layer 100'.

Referring to Figure 20, the embodiment of the present application also provides a housing 300, which includes: a housing body 310, and the glass cover 100 of the embodiment of the present application or the glass cover 100 prepared by the method of the present application. The housing body 310 is arranged around the outer periphery of the glass cover 100 and connected with the glass cover 100 .

In some embodiments, the glass cover 100 and the casing body 310 are separate structures, and the glass cover 100 and the casing body 310 are connected together by adhesion, welding, splicing, etc. In other embodiments, the housing body 310 and the glass cover 100 are an integral structure. During preparation, a shell base material is provided, and ion exchange and heat treatment are performed on the portion of the shell base material corresponding to the cover plate 100 to form a shell 300 in which the shell body 310 and the glass cover plate 100 are an integrated structure.

Referring to FIG. 21 , the housing 300 of the embodiment of the present application further includes a bottom cover 330 , and the bottom cover 330 is at least disposed on the surface of the housing body 310 .

In some embodiments, the cover layer 330 is disposed on a surface of the housing body 310 that is parallel to the extending direction of the first surface 511 and the second surface 513 . In other embodiments, the cover layer 330 is disposed on all surfaces of the housing body 310 . In some embodiments, the cover layer 330 is also disposed on the surface of the light blocking portion 50 .

Optionally, the cover bottom layer 330 can be obtained by photo-curing or heat-curing ink with at least one of light-reflecting and light-absorbing effects. For example, the cover bottom layer 330 is obtained by photo-curing or heat-curing black ink or white ink. When the casing 300 is applied to the electronic device 400, the bottom cover layer 330 is used to shield the electronic components inside the electronic device 400, so that the electronic device 400 has a better appearance.

Optionally, the housing body 310 may be, but is not limited to, a back cover of a smart watch, a back cover of a smart bracelet, a housing for a detection component of a blood oxygen monitor, a housing for a detection component of a heart rate detector, or a detection component of a pulse detector. Component housings, etc.

It can be understood that the housing 300 in this embodiment is only a form of the housing 300 applied to the glass cover 100, and should not be understood as limiting the housing 300 provided in this application, nor should it be understood as limiting the scope of this application. Various embodiments provide limitations for the glass cover 100 .

The glass cover 100 and the housing 300 according to the embodiment of the present application will be further described below through specific examples.

Example 1

Referring to Figure 22, the glass cover 100 of this embodiment is prepared through the following steps:

1) Provide a first glass substrate 100a. The first glass substrate 100a includes a first part 10a, a second part 30a and a third part 50a. The first part 10a and the second part 30a are spaced apart. The third part 50a is located at the third part. Between one part 10a and the second part 30a; the opposite sides of the first part 10a protrude from the third part 50a, and the opposite sides of the second part 30a protrude from the third part 50a; the first glass The material of the substrate 100a is Na-Al-Si glass, and the molar composition of the Na-Al-Si glass is 25Na ₂ O-5Al ₂ O ₃ -70SiO ₂ ; the first glass substrate 100a has a first metal cation Na ⁺ ; Na ⁺ ions are evenly distributed throughout the first glass substrate 100a;

2) Immerse the first glass substrate 100a into molten LiNO ₃ at a temperature of 480°C for a salt bath. During the salt bath process, the exchange of Na ⁺ ions inside the glass piece with Li ⁺ ions outside takes place in the salt bath for 4 hours. At this time, when the Li ⁺ ion diffusion depth in the thinner region (the third part 50 a ) completely or mostly penetrates the entire glass, the third part 50 a is dominated by Li-Al-Si glass. Li ⁺ ions have not diffused in large quantities to the middle part of the thicker step area (the first part 10a and the second part 30a), and the glass here is still dominated by Na-Al-Si glass;

3) Cool the first glass substrate 100a processed in step 2), remove the thicker step area (the steps of the first part 10a and the second part 30a), and the remaining glass pieces are Li-Al-Si glass and Na -A second glass substrate 100b in which Al-Si glass is alternately arranged. Li-Al-Si glass has a lower crystallization temperature than Na-Al-Si glass;

4) The second glass substrate 100b is heat treated at 560°C for a heat treatment time of 4 hours. After heat treatment, the Li-Al-Si glass area crystallizes and the optical transmittance decreases, while the Na-Al-Si glass with a higher crystallization temperature hardly crystallizes and still maintains a high transmittance. In this way, a light-transmitting-light-impermeable-light-transmitting structure is formed. Among them, the opaque area can isolate the crosstalk light conducted inside the PPG window to prevent the crosstalk light from being received by the photosensitive chip and interfering with normal optical signals.

Example 2

Referring to Figure 23, the glass cover 100 of this embodiment is prepared through the following steps:

1) Provide a first glass substrate 100a; the first glass substrate 100a includes a first light-transmitting part 10, a second light-transmitting part 30 and a third part 50a, the first light-transmitting part 10 and the second light-transmitting part 30 are spaced apart It is provided that the third part 50a is located between the first light-transmitting part 10 and the second light-transmitting part 30; the material of the first glass substrate 100a is Na-Al-Si glass, and the molar composition of the Na-Al-Si glass is 25 Na ₂ O-5Al ₂ O ₃ -70SiO ₂ ; the first glass substrate 100a has the first metal cation Na ⁺ ; the Na ⁺ ions are evenly distributed throughout the first glass substrate 100a;

2) Form a protective layer 100' on the surface of the first light-transmitting part 10 and the second light-transmitting part 30; the protective layer 100' is a SiO ₂ thin film. The SiO ₂ film can block ion exchange inside and outside the glass;

3) Immerse the first glass substrate 100a into molten LiNO ₃ at a temperature of 480°C for a salt bath. During the salt bath process, Na ⁺ ions inside the glass sheet exchange with Li ⁺ ions outside the glass piece. The time of the salt bath is 4 hours, so that the third part 50a forms the connection part 50b to obtain the second glass substrate 100b;

4) Heat-treat the second glass substrate 100b at 560°C for 4 hours to obtain the glass cover 100.

Example 3

Referring to Figure 24, the glass cover 100 of this embodiment is prepared through the following steps:

1) Provide a first glass substrate 100a; the first glass substrate 100a includes a first part 10a, a second part 30a and a third part 50a, the first part 10a and the second part 30a are spaced apart, and the third part 50a is located at the Between one part 10a and the second part 30a; both opposite sides of the third part 50a protrude from the first part 10a, and both opposite sides of the third part 50a protrude from the second part 30a; first glass The material of the substrate 100a is Li-Al-Si glass, and the molar composition of the Li-Al-Si glass is 20Li ₂ O-10Al ₂ O ₃ -70SiO ₂ ; the first glass substrate 100a has a first metal cation Li ⁺ ; Li ⁺ ions are evenly distributed throughout the first glass substrate 100a;

2) Immerse the first glass substrate 100a into molten NaNO ₃ at a temperature of 480°C for a salt bath. During the salt bath process, Li ⁺ ions inside the glass piece exchange with Na ⁺ ions outside. The time in the salt bath is 4 hours. At this time, when the Na ⁺ ion diffusion depth in the thinner area (the first part 10a and the second part 30a) completely or mostly penetrates the entire glass, the glass here is mainly Na-Al-Si glass. Na ⁺ ions have not diffused in large quantities to the middle part of the thicker step area (third part 50a), where the glass is still dominated by Li-Al-Si glass, and finally the first part 10a forms the first light-transmitting part 10. The second part 30a forms the second light-transmitting part 30;

3) After cooling, remove the parts protruding from the first light-transmitting part 10 and the second light-transmitting part 30 on opposite sides of the third part 50a to obtain the connecting part 50b to obtain the second glass substrate 100b.

Example 4

The glass cover 100 of this embodiment is prepared through the following steps:

1) Provide a first glass substrate 100a. Please refer to Figures 25 and 26. The first glass substrate 100a includes a first part 10a, four second parts 30a and four third parts 50a. The four second parts 30a are arranged at intervals, each third part 50a is arranged around the outer periphery of a second part 30a and is connected to the second part 30a, one third part 50a corresponds to one second part 30a, and the first part 10a surrounds each third part 50a It is provided that the first part 10a, the second part 30a and the third part 50a are of an integrated structure; both opposite sides of the first part 10a protrude from the third part 50a, and both opposite sides of the second part 30a protrude. The third part 50a (in other words, the opposite sides of the third part 50a are recessed from the first part 10a and the second part 30a); the material of the first glass substrate 100a is Na-Al-Si glass, Na-Al- The molar composition of Si glass is 25Na ₂ O-5Al ₂ O ₃ -70SiO ₂ ; the first glass substrate 100a has the first metal cation Na ⁺ ; the Na ⁺ ions are evenly distributed throughout the first glass substrate 100a;

2) Immerse the first glass substrate 100a into molten LiNO ₃ at a temperature of 480°C for a salt bath. During the salt bath process, the Na ⁺ ions inside the glass piece exchange with the Li ⁺ ions outside. The time of the salt bath is 4 hours; at this time, when the diffusion depth of Li ⁺ ions in the thinner area (the third part 50a) is completely or mostly penetrated When the whole piece of glass is used, therefore, the third part 50a is mainly made of Li-Al-Si glass. Li ⁺ ions have not diffused in large quantities to the middle part of the thicker step area (the first part 10a and the second part 30a), and the glass here is still dominated by Na-Al-Si glass;

4) The second glass substrate 100b is heat treated at 560°C for a heat treatment time of 4 hours to obtain a glass cover 100. As shown in Figures 27 and 28, the glass cover 100 includes a first light-transmitting part 10, four The second light-transmitting part 30 and four light-blocking parts 50 are arranged at intervals. Each light-blocking part 50 surrounds the outer periphery of a second light-transmitting part 30 and is connected to the second light-transmitting part 30 It is provided that one light-blocking part 50 corresponds to one second light-transmitting part 30 , and the first light-transmitting part 10 is arranged around each light-blocking part 50 .

The glass cover 100 obtained in this embodiment can prevent crosstalk, increase the area of the light-transmitting window corresponding to the light source and the chip, reduce light intensity loss, and reduce power consumption. In this embodiment, the light blocking portion 50 is designed as a narrow annular structure, thereby increasing the light transmission area of the entire PPG window, thereby increasing the proportion of effective signal light power, improving light efficiency, and reducing light source power consumption.

Example 5

The glass cover 100 of this embodiment is prepared through the following steps:

1) Provide a first glass substrate 100a. The first glass substrate 100a includes a first part 10a, a second part 30a and a third part 50a. The first part 10a and the second part 30a are spaced apart. The third part 50a is located at the third part. Between one part 10a and the second part 30a; the opposite sides of the first part 10a protrude from the third part 50a, and the opposite sides of the second part 30a protrude from the third part 50a; the first glass The material of the substrate 100a is Na-Al-Si glass, and the molar composition of the Na-Al-Si glass is 25Na ₂ O-5Al ₂ O ₃ -70SiO ₂ ; the first glass substrate 100a has the first metal cation Na ⁺ ; Na ⁺ ions are evenly distributed throughout the first glass substrate 100a;

2) Immerse the first glass substrate 100a into molten LiNO ₃ at a temperature of 530°C for a salt bath. During the salt bath process, the exchange of Na ⁺ ions inside the glass piece with Li ⁺ ions outside takes place in the salt bath for 4 hours. At this time, when the Li ⁺ ion diffusion depth in the thinner region (the third part 50 a ) completely or mostly penetrates the entire glass, therefore, the third part 50 a is dominated by Li-Al-Si glass. Li ⁺ ions have not diffused in large quantities to the middle part of the thicker step area (the first part 10a and the second part 30a), and the glass here is still dominated by Na-Al-Si glass; because the salt bath temperature is between Li-Al- Crystallization temperature of Si glass, therefore, the generated Li-Al-Si glass will crystallize;

3) Cool the first glass substrate 100a processed in step 2), remove the thicker step areas (the steps of the first part 10a and the second part 30a), and form a light-transmitting-light-opaque-light-transmitting structure.

Example 6

The housing 300 of this embodiment is prepared through the following steps:

The preparation method of this embodiment is the same as that of Embodiment 4. The difference is that the first glass substrate 100a also includes a shell substrate. The shell substrate finally forms the shell body. The manufactured shell includes a glass cover 100 The housing body is arranged around the outer periphery of the cover glass, and the glass cover plate 100 and the housing body form an integrated structure.

Various properties of the glass cover 100 or the housing 300 produced in the above embodiments 1 to 6 are shown in Table 1 below.

Table 1 Various properties of the glass cover 100 or casing 300 prepared in Examples 1 to 6

It can be seen from the test results of Examples 1 to 6 that the crystallinity of the light-blocking part 50 of the glass cover 100 prepared by the method of the present application is much higher than that of the first light-transmitting part 10 and the second light-transmitting part 30 The crystallinity is such that the light blocking portion 50 has a good anti-broadcasting effect.

Referring to Figures 29 and 30, an embodiment of the present application further provides an electronic device 400, which includes: the glass cover 100, the light emitter 410 and the light receiver 430 of the embodiment of the present application. The light emitter 410 is disposed on one side of the glass cover 100 and is disposed close to the first light transmitting part 10 for emitting light to the first light transmitting part 10; the light receiver 430 and the light emitter 410 are disposed on the same side of the glass cover 100. The second light-transmitting part 30 is disposed sideways and close to the second light-transmitting part 30 for receiving light that passes through the first light-transmitting part 10 and is reflected into the second light-transmitting part 30 .

It should be understood that the placement of the light emitter 410 close to the first light-transmitting part 10 in this application can be understood to mean that the light-emitting emitter 410 is provided corresponding to the first light-transmitting part 10; in other words, it can be understood that the light emitted from the light emitter 410 irradiates the first light-transmitting part 10. part 10 , and at least partially passes through the first light-transmitting part 10 . Similarly, in this application, the light receiver 430 is disposed close to the second light-transmitting part 30, which can be understood to mean that the light receiver 430 is disposed corresponding to the second light-transmitting part 30; in other words, it can be understood that the light receiver 430 can receive the light emitted from the light emitter 410. , and is reflected by the light entering the second light-transmitting part 30 .

During operation, the side of the glass cover 100 of the electronic device 400 away from the light emitter 410 and the light receiver 430 is close to the human body (such as the wrist), and the light emitted by the light emitter 410 of the electronic device 400 passes through the first light-transmitting part 10 and reaches After being reflected by the human skin, it passes through the second light-transmitting part 30 and is transmitted to the light receiver 430 for sensing. Specifically, when the light beam (for example, green light) of a certain wavelength emitted by the light emitter 410 irradiates the skin surface, the light beam will be transmitted to the light receiver 430 through transmission or reflection. During this process, due to absorption by skin muscles and blood, Due to the attenuation effect, the intensity of the light detected by the light receiver 430 will decrease. The reflection of light by the human body's skin, bones, meat, fat, etc. is a fixed value, while the capillaries, arteries and veins continue to increase and decrease with the pulse volume under the action of the heart. When the heart contracts, the peripheral blood volume is the largest and the amount of light absorption is the largest, so the light intensity detected by the light receiver 430 is the smallest; on the contrary, when the heart relaxes, the light intensity detected by the light receiver 430 is the largest, thus causing the light receiver to The light intensity received by 430 then changes pulsatingly. At the same time, oxygenated hemoglobin and deoxygenated hemoglobin in the blood have different absorption coefficients for light of specific wavelengths, so that the pulse can be detected based on the reflected light signal detected by the light receiver 430. , blood oxygen, etc. for testing. When the light entering the first light-transmitting part 10 is emitted to the light-blocking part 50 (this part of the light may be called interference light), the crystal particles (i.e., crystal grains) in the light-blocking part 50 have a scattering effect, an absorption effect, or an effect on the interference light. At least one of the reflection effects greatly reduces the light transmittance of the light blocking part 50, thereby greatly attenuating the interference light passing through the light blocking part 50, entering the second light transmitting part 30 and being received by the light receiver 430, thereby improving the The signal-to-noise ratio of the optical signal received by the optical receiver 430 is improved, so that the accuracy of the electronic device 400 in detecting pulse, heart rate, blood oxygen, etc. is greatly improved.

The electronic device 400 of this application includes, but is not limited to, wearable devices (such as smart glasses, smart watches, smart bracelets, etc.), blood oxygen monitors, heart rate detectors, pulse detectors, mobile phones, tablet computers, notebook computers, electronic devices, etc. Readers, game consoles and other electronic devices with health detection functions 400.

Optionally, the light emitter 410 may be, but is not limited to, a light-emitting diode (Light-Emitting Diode, LED light), a micro-light-emitting diode (Micro LED light), or a sub-millimeter light-emitting diode light (mini LED light or mini LED light). wait. The light emitter 410 may include one or more of a red light emitting unit, a blue light emitting unit, a green light emitting unit, an infrared light emitting unit, and a white light emitting unit. In other words, the light emitter 410 can emit one or more of red light, blue light, green light, infrared light, white light, and any mixed colors therebetween. In other words, the wavelength of the light emitted by the light emitter 410 can be controlled by controlling the light emission of each light emitting unit. Optionally, the number of light emitters 410 may be, but is not limited to, 1, 2, 3, 4, 5, etc., and the specific number is not specifically limited in this application.

Optionally, the light emitter 410 can be caused to emit light of different wavelengths according to different detection items. For example, when heart rate detection is required, a light source with a wavelength of 525 nm can be used. Because oxygenated hemoglobin and deoxygenated hemoglobin have a large absorption coefficient at 525 nm, using a light source with a wavelength of 525 nm can make the heart rate detection more accurate and better avoid errors. For another example, when performing blood oxygen detection, you can choose light sources with wavelengths of 660nm and 940nm. Oxygenated hemoglobin and deoxygenated hemoglobin have the greatest difference in absorption coefficients of light at 660nm wavelength, which is suitable for detecting blood oxygen concentration; however, when the pulse is beating, Human skin tissue will shrink or expand to a certain extent, which will introduce new optical path differences. The optical path differences of 660nm and 940nm match well and can be approximately considered equal. When performing fitting calculations, the influence of the optical path difference can be directly eliminated through the ratio of the two.

Optionally, the light receiver 430 may be, but is not limited to, a photodiode receiving sensor (Photo Diode, PD receiving sensor). The number of light receivers 430 may be one or more, such as 2, 3, 4, 5, etc. When the number of the light receiver 430 and the light emitter 410 is both one, the light receiver 430 and the light emitter 410 are spaced apart. When the number of light receivers 430 is multiple and the number of light emitters 410 is one, the plurality of light receivers 430 are arranged at intervals and around the light emitter 410 . When there are multiple light receivers 430 and light emitters 410, the light receivers 430 and the light emitters 410 are arranged alternately. In some embodiments, a plurality of light receivers 430 are uniformly or symmetrically arranged around the light emitter 410 . In other embodiments, the plurality of light receivers 430 are non-uniformly disposed around the light emitter 410 . When the number of light receivers 430 is multiple, after the light emitted by the light emitter 410 is reflected and injected into the light receiver 430, more light can be received by the light receiver 430, which can reduce the error that can be detected by the electronic device 400. , improve the accuracy and precision of the electronic device 400 detection.

Please refer to Figure 31 as well. In some embodiments, the electronic device 400 of the embodiment of the present application further includes a processor 450 and a memory 470. The processor 450 is electrically connected to the light emitter 410 and the light receiver 430 respectively, and is used to control the light emitter 410 to emit light, and control the light receiver 430 to receive light that passes through the first light-transmitting part 10 and is reflected into the second light-transmitting part 30 At the same time, the target object's blood pressure, blood oxygen, pulse and other data are obtained according to the light emitted by the light emitter 410 and the light received by the light receiver 430; the memory 470 is electrically connected to the processor 450 and is used to store the requirements for the operation of the processor 450 Program code, program code required to control the operation of the light emitter 410 and the light receiver 430, etc.

Optionally, the processor 450 includes one or more general-purpose processors 450, where the general-purpose processor 450 can be any type of device capable of processing electronic instructions, including a central processing unit (Central Processing Unit, CPU), a microprocessor , microcontrollers, main processors, controllers, ASICs, etc. The processor 450 is used to execute various types of digital storage instructions, such as software or firmware programs stored in the memory 470, which can enable the computing device to provide a wide variety of services.

Optionally, the memory 470 may include volatile memory (Volatile Memory), such as random access memory (Random Access Memory, RAM); the memory 470 may also include non-volatile memory (Non-Volatile Memory, NVM), such as Read-Only Memory (ROM), Flash Memory (FM), Hard Disk Drive (HDD) or Solid-State Drive (SSD). Memory 470 may also include a combination of the types of memory described above.

Please refer to Figure 32 and Figure 33 together. In some embodiments, the electronic device 400 of the embodiment of the present application also includes a display component 420. The display component 420 is spaced apart from the glass cover 100, and the emitter 410 and the light receiver 430 are located at a distance from the glass cover 100. between the display assembly 420 and the glass cover 100 . The display component 420 is electrically connected to the processor 450 and is used for display under the control of the processor 450 . The memory 470 is also used to store the program code required to control the operation of the display component 420, the display content of the display component 420, and the like.

Optionally, the display component 420 may be, but is not limited to, a liquid crystal display component, a light emitting diode display component (LED display component), a micro light emitting diode display component (Micro LED display component), a sub-millimeter light emitting diode display component (Mini LED display component). ), one or more of organic light-emitting diode display components (OLED display components), etc.

In some embodiments, the electronic device 400 of the embodiment of the present application further includes a housing body 310 , which is disposed around the outer periphery of the glass cover 100 and connected with the glass cover 100 .

In some embodiments, the glass cover 100 and the casing body 310 are separate structures, and the glass cover 100 and the casing body 310 are connected together by adhesion, welding, splicing, etc. In other embodiments, the housing body 310 and the glass cover 100 are an integral structure.

As shown in Figure 32, when the electronic device 400 is a wearable device, the electronic device 400 in the embodiment of the present application further includes: a wristband 440. The wristband 440 is connected to the housing body 310 and is used to set the electronic device 400 on the body. on the target object (e.g. wrist).

Optionally, the number of wristbands 440 may be one or two. When there is one wristband 440, the opposite ends of the wristband 440 are respectively connected to the opposite ends of the housing body 310, so that the wristband 440 and the housing body 310 form a wearing groove 441 for being put on the target object. When there are two wrist straps 440, the two wrist straps 440 are connected to the opposite ends of the housing body 310, and the ends of the two wrist straps 440 away from the housing body 310 are buckled together so that the wrist straps 440 are connected to the housing. The main body 310 forms a wearing groove 441 for being placed on the target object.

It can be understood that the electronic device 400 in this embodiment is only a form of the electronic device 400 to which the glass cover 100 is applied. It should not be understood as limiting the electronic device 400 provided in this application, nor should it be understood as limiting the scope of this application. Various embodiments provide limitations for the glass cover 100 .

References in this application to "embodiments" and "implementations" mean that a particular feature, structure or characteristic described in connection with the embodiment can be included in at least one embodiment of the application. The appearances of phrases in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein may be combined with other embodiments. In addition, it should also be understood that the features, structures or characteristics described in the embodiments of the present application can be arbitrarily combined to form another one without departing from the spirit and scope of the technical solution of the present application, provided there is no contradiction between them. embodiment.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application and are not limiting. Although the present application has been described in detail with reference to the above preferred embodiments, those of ordinary skill in the art should understand that the technical solutions of the present application can be modified. Any modification or equivalent substitution of the solution shall not depart from the spirit and scope of the technical solution of this application.

Claims

A glass cover, characterized in that it includes:

the first light-transmitting part;

a second light-transmitting part, the second light-transmitting part being spaced apart from the first light-transmitting part; and

A light-blocking part, the light-blocking part is located between the first light-transmitting part and the second light-transmitting part, the light-blocking part is used to prevent the light entering the first light-transmitting part from entering the The light from the second light-transmitting part passes through the light-blocking part to channel light, wherein the crystallinity of the light-blocking part is greater than the crystallinity of the first light-transmitting part, and the crystallinity of the light-blocking part is greater than The crystallinity of the second light-transmitting part.
The glass cover according to claim 1, wherein the glass cover satisfies the relationship:

40%≤R-R1≤90%; and

40%≤R-R2≤90%;

Wherein, R is the crystallinity of the light-blocking part, R1 is the crystallinity of the first light-transmitting part, and R2 is the crystallinity of the second light-transmitting part.
The glass cover plate according to claim 1, wherein the light-blocking part has crystal particles, and the particle size d of the crystal particles ranges from 1 μm ≤ d ≤ 200 μm, or 2 μm ≤ d ≤ 50 μm.
The glass cover according to claim 1, wherein the first light-transmitting part, the light-blocking part and the second light-transmitting part are of an integrated structure; the components of the first light-transmitting part , the components of the light-blocking part and the components of the second light-transmitting part have the same chemical formula.
The glass cover according to claim 4, wherein the first light-transmitting part includes a first metal cation, the second light-transmitting part includes a first metal cation, and the light-blocking part includes a second metal cation. Cations, the elements of the first metal cation and the second metal cation are different, and the valence states of the first metal cation and the second metal cation are the same.
The glass cover according to claim 5, wherein the first metal cations include lithium ions, sodium ions, potassium ions, rubidium ions, cesium ions, silver ions, magnesium ions, aluminum ions, calcium ions, and strontium ions. At least one of ions, barium ions, yttrium ions, zinc ions, copper ions, and gold ions; the second metal cations include lithium ions, sodium ions, potassium ions, rubidium ions, cesium ions, silver ions, magnesium ions, At least one of aluminum ions, calcium ions, strontium ions, barium ions, yttrium ions, zinc ions, copper ions, and gold ions.
The glass cover according to claim 1, characterized in that, in the wavelength range of 300 nm to 1500 nm, the range of the light transmittance T1 of the first light transmitting part is T1≥20%, and the range of the second light transmitting part is T1≥20%. The range of the light transmittance T2 of the light blocking part is T2≥20%, and the range of the light transmittance T of the light blocking part is T≤80%×T1 and T≤80%×T2.
The glass cover according to any one of claims 1 to 7, characterized in that the first light-transmitting part is made of silicate glass, aluminosilicate glass, phosphate glass, aluminophosphate glass, boric acid At least one of salt glass and aluminate glass; the second light-transmitting part is silicate glass, aluminosilicate glass, phosphate glass, aluminophosphate glass, borate glass, aluminate glass at least one of; the light blocking part is at least one of silicate glass, aluminosilicate glass, phosphate glass, aluminophosphate glass, borate glass, and aluminate glass.
A method for preparing a glass cover plate, which is characterized by including:

providing a first glass substrate; and

The first glass substrate is subjected to ion exchange and crystallization to obtain a glass cover plate. The glass cover plate includes a first light-transmitting part, a second light-transmitting part and a light-blocking part. The second light-transmitting part and The first light-transmitting parts are arranged at intervals; the light-blocking part is located between the first light-transmitting part and the second light-transmitting part, and the light-blocking part is used to prevent entry into the first light-transmitting part. The light rays entering the second light-transmitting part pass through the light-blocking part, and the crystallinity of the light-blocking part is greater than the crystallinity of the first light-transmitting part, and the light-blocking part The crystallinity is greater than the crystallinity of the second light-transmitting part.
The method for preparing a glass cover plate according to claim 9, wherein the step of performing ion exchange and crystallization on the first glass substrate to obtain the glass cover plate includes:

Perform ion exchange on the first glass substrate to obtain a second glass substrate. The second glass substrate includes a first light-transmitting part, a second light-transmitting part and a connecting part. The first light-transmitting part The connection part is spaced apart from the second light-transmitting part; the connecting part is located between the first light-transmitting part and the second light-transmitting part; and

The second glass base material is heat-treated to crystallize the connecting portion to form a light-blocking portion, the light-blocking portion being used to prevent light entering the first light-transmitting portion from entering the second light-transmitting portion. Part of the light passes through the light-blocking part to cause light channeling, and the crystallinity of the light-blocking part is greater than the crystallinity of the first light-transmitting part and greater than the crystallinity of the second light-transmitting part.
The method for preparing a glass cover according to claim 10, wherein the first glass base material includes a first part, a second part and a third part, and the first part is spaced apart from the second part. It is arranged that the third part is located between the first part and the second part; both opposite sides of the first part protrude from the third part, and the opposite sides of the second part The third part protrudes on both sides of the back;

Performing ion exchange on the first glass substrate to obtain a second glass substrate includes:

Perform cation exchange on the first glass substrate, so that cation exchange occurs on the surfaces of the first part, the second part and the third part, and the third part forms the connection part; and

Remove the portions of the first portion that protrude from the connecting portion on opposite sides to obtain the first light-transmitting portion, and remove the portions of the second portion that protrude from the connecting portion on opposite sides to obtain The second light-transmitting part is used to obtain a second glass substrate.
The method for preparing a glass cover according to claim 10, wherein the first glass base material includes a first light-transmitting part, a second light-transmitting part and a third part, and the first light-transmitting part and The second light-transmitting parts are arranged at intervals, and the third part is located between the first light-transmitting part and the second light-transmitting part;

Performing ion exchange on the first glass substrate to obtain a second glass substrate includes:

Form a protective layer on the surfaces of the first light-transmitting part and the second light-transmitting part; and

The third part is subjected to cation exchange so that the third part forms the connecting part to obtain a second glass substrate.
The method for preparing a glass cover according to any one of claims 10 to 12, wherein the first glass substrate includes a first metal cation, and the first glass substrate is subjected to ion exchange, To obtain a second glass substrate, including:

The first glass substrate is placed in a salt melt or salt solution having a second metal cation, or the first glass substrate is contacted with a salt powder or oxide powder having a second metal cation, at a temperature A displacement reaction occurs between at least part of the first metal cations and the second metal cations in the first glass substrate at 300°C to 900°C to obtain the second glass substrate, where the first metal cations and the second metal cations are The elements of the second metal cation are different, and the valence states of the first metal cation and the second metal cation are the same.
The method for preparing a glass cover according to claim 10, wherein the first glass base material includes a first part, a second part and a third part, and the first part is spaced apart from the second part. It is arranged that the third part is located between the first part and the second part; both opposite sides of the third part protrude from the first part, and the opposite sides of the third part The second part protrudes from both sides of the back;

Performing ion exchange on the first glass substrate to obtain a second glass substrate includes:

Cation exchange is performed on the first glass substrate, so that cation exchange occurs on the surfaces of the first part, the second part and the third part, so that the first part forms the first light-transmitting part , the second part forms the second light-transmitting part; and

The portions of the third portion protruding from the first light-transmitting portion and the second light-transmitting portion on opposite sides are removed to obtain the connecting portion and a second glass substrate.
The method for preparing a glass cover plate according to claim 10, characterized in that:

The first glass substrate includes a first part, a second part and a connecting part, the first part and the second part are spaced apart, and the connecting part is located between the first part and the second part. between;

Performing ion exchange on the first glass substrate to obtain a second glass substrate includes:

Form a protective layer on the surface of the connecting portion; and

The first part and the second part are subjected to cation exchange, so that the first part forms the first light-transmitting part, and the second part forms the second light-transmitting part, so as to obtain the second Glass substrate.
The method for preparing a glass cover according to any one of claims 10-12, 14, and 15, wherein the second glass substrate is heat treated to crystallize the connecting portion to form a barrier. Light department, including:

Heat treatment is performed at temperatures Te to Te1 to cause the connection portion to crystallize to form a light-blocking portion, where Te is the crystallization temperature of the connection portion, Te1 is the crystallization temperature of the first light-transmitting portion, and Te2 is the crystallization temperature of the second light-transmitting part, and Te<Te1=Te2.
The method for preparing a glass cover according to claim 9, wherein the first glass substrate includes a first metal cation, and the first glass substrate is subjected to ion exchange and crystallization to obtain the The glass cover includes:

The first glass substrate is placed in a salt melt or salt solution having a second metal cation, or the first glass substrate is contacted with a salt powder or oxide powder having a second metal cation, at a temperature Te to Te1 or Te to Te2, at least part of the first metal cations in the first glass substrate are replaced with the second metal cations and crystallized to obtain the glass cover plate, where Te is the The crystallization temperature of the light-blocking part, Te1 is the crystallization temperature of the first light-transmitting part, the crystallization temperature of the second light-transmitting part is Te2, and Te<Te1, Te<Te2; wherein, the The elements of the first metal cation and the second metal cation are different, and the valence states of the first metal cation and the second metal cation are the same.
A shell, characterized in that it includes:

The glass cover plate according to any one of claims 1 to 8 or the glass cover plate produced by the method according to any one of claims 9 to 17; and

The housing body is arranged around the outer periphery of the glass cover and is connected to the glass cover.
An electronic device, characterized by including:

The glass cover plate according to any one of claims 1 to 8 or the glass cover plate prepared by the method according to any one of claims 9 to 17;

A light emitter, the light emitter is provided on the glass cover plate and is disposed close to the first light-transmitting part in the glass cover plate, and is used for emitting light to the first light-transmitting part; and

A light receiver, the light receiver and the light emitter are arranged on the same side of the glass cover and close to the second light-transmitting part in the glass cover, for receiving all the light transmitted through it. The first light-transmitting part is reflected into the second light-transmitting part.
The electronic device according to claim 19, characterized in that the electronic device further includes a processor, the processor is electrically connected to the light emitter and the light receiver respectively, and the processor is used to control the The light emitter emits the light, and controls the light receiver to receive the part of the light that passes through the first light-transmitting part and is reflected into the second light-transmitting part.