WO2017128677A1

WO2017128677A1 - Cover glass assembly

Info

Publication number: WO2017128677A1
Application number: PCT/CN2016/092774
Authority: WO
Inventors: 杨和辉; 蔡军; 施文明
Original assignee: 华为技术有限公司
Priority date: 2016-01-29
Filing date: 2016-08-02
Publication date: 2017-08-03
Also published as: CN105704268A

Abstract

A cover glass assembly according to an embodiment of the present invention comprises: cover glass (210), wherein the cover glass (210) comprises at least one corner; and a cushioning member (220) for generating a force F acting on each of the at least one corner of the cover glass (210), the direction of the acting force F forming an included angle α with respect to a plane in which a main body of the cover glass (210) is located, wherein the included angle α satisfies: 0° < α < 90°. According to the present invention, by adding the cushioning member, the horizontal force applied on the cover glass when dropped is reduced, and a vertical upward force is applied so that the cover glass is deformed and slightly arched upwardly, so as to achieve the purpose of protecting the cover glass, thus improving the dropping performance of the cover glass.

Description

Cover glass assembly

The present application claims priority to Chinese Patent Application No. PCT Application No. No. No. No. No. No. No. No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No No

Technical field

The present invention relates to the field of terminal terminal devices and, more particularly, to a cover glass assembly.

Background technique

The reliability of a mobile phone drop or cell phone bending is the most obvious part of the user's perception, and is also synonymous with the quality reliability of the user's eyes. Most of the drops in daily use are dropped from the hands, backpacks or tables. The height is usually about 0.8m~1.2m. From the Drop To Failure (DTF) data of the P8 mobile phone, only 0.7 can pass. m. In the current mobile phone development process, the failure of the whole machine reliability test is one of the most important factors affecting the progress of the R&D project, and more than 80% of the reliability test failures are fall test failures. Among them, the four corners of the drop test are more severe. The fall.

In the prior art, the flagship machine adopts direct point-curing glue or glass side-point curing glue on the lower surface of the contact glass, and the drop performance is mainly dependent on the glass itself.

Summary of the invention

Embodiments of the present invention provide a cover glass assembly capable of improving the drop resistance of the cover glass.

In a first aspect, a cover glass assembly is provided, the cover glass assembly includes a cover glass 210, the cover glass 210 includes at least one corner, and a cushioning member 220 for the cover glass 210 A force F is generated at each of the at least one corner, and the direction of the force F is at an angle α with a plane in which the body of the cover glass 210 is located, wherein the angle α satisfies: 0 °<α<90°.

For the cover glass including the corner, the corner is more damaged when it is dropped. Therefore, the embodiment of the present invention can change the force of the cover glass 210 at the corner by adding a cushioning member, for example, the force at the corner. F from the direct horizontal action in the prior art to the angle with the horizontal plane of the main body of the cover glass 210 is greater than 0 ° and less than 90 °, such a role The force F can be decomposed into a horizontal force F1=Fcosα and a vertical upward force F2=Fsinα. This vertical upward component force Fsinα can cause the cover glass 210 to deform upwardly, and the horizontal component force Fcosα is relative to the prior art. The force F directly acting on the cover glass 210 is small, and compared with the sinusoidal deformation in the prior art, the embodiment of the invention can significantly reduce the deformation condition of the cover glass, thereby achieving protection of the cover glass when falling. the goal of.

With reference to the first aspect, in a first possible implementation manner of the first aspect, the cover glass assembly further includes: a rectangular frame 230, the inner wall of the rectangular frame 230 is disposed around a rectangular stepped structure, and the The cover glass 210 is bonded to the rectangular stepped structure by an elastic glue 240, and the cushioning member 220 is disposed on the rectangular stepped structure.

The inner wall of the rectangular frame 230 is disposed in a stepped structure. The stepped structure can be used to support the cover glass 210. That is to say, a rectangular inner frame is disposed around the inner wall of the rectangular frame 230 to form a step with the rectangular frame 230. The upper surface of the rectangular inner frame is perpendicular to the inner wall of the rectangular frame 230 such that the periphery of the lower surface of the cover glass 210 is in contact with the upper surface of the rectangular frame. The elastic glue 240 can buffer the force of the rectangular frame 230 on the cover glass 210. Specifically, in the process of dropping, the terminal device has a downward acceleration, and the contact with the ground elastic rubber 240 is deformed. When the lowest point is reached, the elastic rubber 240 can return to the original state due to the elastic property, and then the cover glass 210 is vertical. The upward force F ₃ . In addition, as can be seen from the foregoing, the cover glass 210 is also subjected to a vertical upward force Fsinα of the cushioning member 220 to the cover glass 210, and the combined force F ₃ +Fsinα of the two vertically upward acting forces causes the cover glass 210 The deformation is upwardly arched to further protect the cover glass.

In conjunction with the first aspect, in a second possible implementation of the first aspect, the cover glass 210 is a cover glass of a rectangular structure.

In combination with the first aspect and the first possible implementation of the first aspect or the second possible implementation of the first aspect, in a third possible implementation manner of the first aspect, the cover glass 210 and the The cushioning member 220 is in surface contact.

In order to make the cover glass 210 and the cushioning member 220 easier to fit, the cover glass is better protected, and the portion of the cover glass 210 that is connected to the cushioning member 220 may be disposed in a plane parallel to the contact surface of the cushioning member 220. This further protects the cover glass.

In conjunction with the first possible implementation of the first aspect, in a fourth possible implementation manner of the first aspect, the cover glass 210 is a cover glass of a rectangular structure, and the cover glass of the rectangular structure The four corners are respectively circular chamfers, and the buffering member 220 is disposed on the cover glass 210 The four arcs are chamfered, and the plane of the buffer member 220 contacting the surface of the cover glass 210 is at an angle α with the plane of the inner wall of the rectangular frame 230.

In the embodiment of the present invention, the four corners of the cover glass of the rectangular structure are respectively chamfered by a circle, and the height of the straight triangular prism whose bottom surface is a right triangle, that is, the height of the buffer member 220 can be set according to a specific application, for example, the bottom surface. The height of a straight triangular prism that is a right triangle may be 0.5 mm. Thus, the cushioning member 2 can be arranged at even intervals around the four circular chamfers of the cover glass 210. In the embodiment of the present invention, the separation distance may be set according to an actual application, which is not limited by the present invention. For example, the separation distance may be set to 1 mm, thereby improving the resistance of the terminal device in four corners during the falling process. Drop performance.

With reference to the first aspect, and the first possible implementation of the first aspect to any one of the possible implementations of the fourth possible implementation of the first aspect, the fifth possible implementation of the first aspect In the mode, the angle α satisfies: 20° ≤ α ≤ 30°.

The cushioning member 220 generates a force F on the cover glass 210. The angle between the force F and the plane of the cover glass 210 can be further defined as 20° ≤ α ≤ 30°, that is, the buffer member 220 and the cover glass The contact surface of 210 is disposed at an angle α with the plane of the inner wall of the rectangular frame 230. Preferably, the angle α ranges from 20 degrees to 30 degrees, and the acute angle α may be 20 degrees, 25 degrees, and 28 degrees. Or 30 degrees, etc., the embodiment of the invention is not limited thereto.

With reference to the first aspect and the first possible implementation of the first aspect to any one of the possible implementations of the fifth possible implementation of the first aspect, the sixth possible implementation of the first aspect The material of the buffer member 220 is polycarbonate PC or propylene-butadiene-styrene copolymer PA.

The material of the buffer member 220 may be polycarbonate PC, propylene-butadiene-styrene copolymer PA, or a synthetic material of PC and PA. It should be understood that the buffer member 220 may also be other materials, which is not limited in the present invention.

With reference to the first aspect and the first possible implementation of the first aspect to any one of the possible implementations of the sixth possible implementation of the first aspect, the seventh possible implementation of the first aspect The rectangular frame 230 is integrated with the buffer member 220.

Specifically, the rectangular frame 230 of the terminal device and the buffer member 220 may be integrated into one body, which is not limited in the present invention. For example, for the rectangular frame 230 made of metal material and the buffer member 220 made of PC material, the rectangular frame 230 and the buffer member 220 may be injection-molded by a process such as two-color injection molding, nano-injection molding or insert molding.

In a second aspect, a terminal device is provided, including:

The cover glass assembly, the end cover, the display screen, the battery, and the chip according to any one of the first aspect, wherein the display panel is provided inside the cover glass assembly, the battery is disposed inside the display screen The chip, and the cover glass assembly, the display screen, the battery, and the chip are on an inner side of the end cap.

According to the above technical solution, in the cover glass assembly of the embodiment of the present invention, by adding the cushioning member, the horizontal force of the cover glass is reduced when falling, and the vertical upward component is caused to deform the cover glass to be slightly arched, thereby The purpose of protecting the cover glass is achieved, and the drop performance is improved.

DRAWINGS

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings to be used in the embodiments of the present invention will be briefly described below. It is obvious that the drawings described below are only some embodiments of the present invention, Those skilled in the art can also obtain other drawings based on these drawings without paying any creative work.

1 is a partial cross-sectional view of a prior art cover glass assembly.

2 is a schematic view showing the force analysis of the cover glass of the prior art cover glass assembly when it is dropped.

FIG. 3 is a schematic view showing deformation of the cover glass of the cover glass assembly in the prior art when it is dropped.

4 is a partial cross-sectional view of a cover glass assembly in accordance with an embodiment of the present invention.

Figure 5 is a schematic illustration of deformation of a cover glass when dropped, in accordance with an embodiment of the present invention.

Figure 6 is a partial cross-sectional view of a cover glass assembly in accordance with another embodiment of the present invention.

Figure 7 is a schematic illustration of deformation of a cover glass when dropped, in accordance with another embodiment of the present invention.

Figure 8 is a partial cross-sectional view of a cover glass assembly in accordance with yet another embodiment of the present invention.

9 is a partial cross-sectional view of a cover glass assembly in accordance with an embodiment of the present invention.

Figure 10 is a partial front elevational view of a cover glass assembly in accordance with an embodiment of the present invention.

Figure 11 is a cross-sectional view of a terminal device in accordance with an embodiment of the present invention.

Figure 12 is a partial cross-sectional view of a terminal device in accordance with an embodiment of the present invention.

detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are a part of the embodiments of the present invention, but not all embodiments. Based on the embodiments of the present invention, those of ordinary skill in the art are not making innovations. All other embodiments obtained under the premise of productive labor are within the scope of the invention.

The terminal device in the embodiment of the present invention may include, but is not limited to, a mobile phone, a tablet computer, an e-book, a mobile station, and the like. Although the mobile phone is shown in the drawings, the embodiment of the present invention does not limit the present invention.

The terminal device includes other components except the cover glass and the rectangular frame. For brevity, details are not described herein again.

The rectangular frame may be a supporting member for placing a printed circuit board, a chip or a battery in a terminal device, or a supporting member for supporting a terminal device screen, for example, a mobile phone middle frame, a mobile phone screen support board, a tablet computer or a computer screen The support plate or the like, the embodiment of the invention is not limited thereto. The rectangular border can be a back cover of a mobile phone, a tablet or a computer.

1 is a partial cross-sectional view of a cover glass assembly in the prior art in which a glue is spotted under a cover glass. As shown in FIG. 1, the cover glass assembly includes a cover glass 110, a rectangular frame 120, and a curing adhesive 130.

In the prior art, when the terminal device is dropped, the rectangular frame 120 generates a force F to the cover glass 110. 2 is a schematic view showing the force analysis of the cover glass when the cover glass assembly is dropped, and the force F is transmitted to the cover glass 110 without buffering, and the cover glass 110 has a maximum force if the force is applied. The cover glass 110 will rupture beyond the range of strength that the cover glass 110 itself can withstand.

In addition, since the curing adhesive 130 is tightly pulled between the cover glass 110 and the rectangular frame 120, the curing adhesive 130 does not deform after being stressed, or does not return to the original state after being deformed, so that the cover glass 110 is replaced. When subjected to the rightward force F as shown in FIG. 2, the body of the cover glass 110 is accelerated to be deformed up and down, and FIG. 3 is a schematic view showing deformation of the cover glass at the time of dropping. After the cover glass 110 is subjected to the force F, it will be deformed as shown by the broken line in FIG. 3 in a sinusoidal curve, thereby accelerating the cracking of the cover glass.

The description of the cover glass assembly in the embodiment of the present invention is described in which the terminal device is placed on a horizontal table. Wherein, the vertical direction is the same as the direction of gravity, and the horizontal direction is parallel to the direction of the horizontal table top.

FIG. 4 illustrates a partial cross-sectional view of a cover glass assembly 200 in accordance with an embodiment of the present invention. As shown in FIG. 4, the cover glass assembly 200 includes:

Cover glass 210, the cover glass 210 includes at least one corner;

a cushioning member 220 for each of the at least one corner of the cover glass 210 A force F is generated at the corner, and the direction of the force F is at an angle α with the plane of the body of the cover glass 210, wherein the angle α satisfies: 0° < α < 90°.

Specifically, for the cover glass including at least one corner, the corners are more damaged when dropped, and thus the embodiment of the present invention can change the force of the cover glass 210 at the corner by adding a cushioning member, for example, The force F at the corner is changed from the direct horizontal action in the prior art to the angle of the plane of the main body of the cover glass 210 to be greater than 0° and less than 90°, and the force F can be decomposed. For the horizontal force F1=Fcosα and the vertical upward force F2=Fsinα, this vertical upward component force Fsinα can cause the cover glass 210 to deform upwardly, and the horizontal component force Fcosα acts directly on the prior art. The force F of the cover glass 210 is small, and compared with the sinusoidal deformation in the prior art, the embodiment of the present invention can significantly reduce the deformation condition of the cover glass 210 as shown by the broken line in FIG. 5, thereby achieving the drop. The purpose of protecting the cover glass.

For example, if α is 45°, F1=Fcosα=0.7F<F, that is, the cushioning member 220 can reduce the horizontal force on the cover glass 210.

The buffering member 220 may be a solid straight triangular prism whose bottom surface is a right-angled triangle, or the buffering member 220 may also be a hollow triangular prism having a three-plane bottom surface having a right-angled triangle, or only one inclined surface and the rectangular frame 230. The plane in which the inner wall is located is an acute angle. For the convenience of description, the following embodiment is described by taking the cushion member 220 as a solid straight triangular prism whose bottom surface is a right triangle, but the present invention is not limited thereto.

It should be understood that in a specific terminal device, there may be a gap between the respective components of the terminal device, the gap may buffer the interaction force between the components, and the two components may be better matched and facilitated. Assembly of the various components. For example, a gap may be provided between the cushioning member 220 and the cover glass 210 in the actually produced terminal device. The width of the slit can be configured according to the actual application. For example, it can be set to 0.05 mm or the like, which is not limited in the present invention.

Therefore, in the cover glass assembly of the embodiment of the present invention, by adding the cushioning member, the horizontal force of the cover glass is reduced when it is dropped, and the vertical upward force component causes the cover glass to be deformed upwardly and slightly arched, thereby achieving the protective cover. The purpose of the plate glass is to improve the drop performance of the cover glass.

Optionally, the cover glass assembly further includes:

a rectangular frame 230, the inner wall of the rectangular frame 230 is disposed in a rectangular stepped structure, and the cover glass 210 is bonded to the rectangular stepped structure by an elastic glue 240, and the buffer member 220 is disposed on the rectangle Stepped structure.

Specifically, the frame of the cover glass 210 may be disposed in a rectangular shape. For example, the inner wall of the rectangular frame 230 may be disposed in a stepped structure, and the stepped structure may be used to support the cover glass 210, that is, the rectangle. A rectangular inner frame may be further disposed around the inner wall of the frame 230 to form a stepped structure with the rectangular frame 230, and an upper surface of the rectangular inner frame and the inner wall of the rectangular frame 230 are perpendicular to each other, such that the lower surface of the cover glass 210 The periphery is in contact with the upper surface of the rectangular frame 230, and is bonded to the rectangular stepped structure by an elastic glue 240.

6 is a partial cross-sectional view of an elastic rubber 240 that can buffer the force of the rectangular frame 230 on the cover glass 210, in accordance with an embodiment of the present invention. Specifically, in the process of dropping, the terminal device has a downward acceleration, and the contact with the ground elastic rubber 240 is deformed. When the lowest point is reached, the elastic rubber 240 can return to the original state due to the elastic property, and then the cover glass 210 is vertical. Upward force F3. In addition, as can be seen from the foregoing, the cover glass 210 is also subjected to the vertical force Fsinα of the buffer member 220 to the cover glass 210, and the resultant force F3+Fsinα through the two vertically upward forces is as shown in FIG. The cover glass 210 is deformed upwardly and slightly arched, thereby further achieving the purpose of protecting the cover glass.

Alternatively, the cover glass 210 may be a cover glass of a rectangular structure.

It should be understood that the cover glass 210 and the frame may have other shapes, which are not limited in the present invention. For the convenience of description, the following embodiments are described by taking the cover glass 210 as a rectangular structure and a rectangular frame 230 as an example, but The invention is not limited thereto.

Alternatively, the elastic glue 240 may be an elastic glue such as rubber glue or polyurethane glue or the like. As long as it can satisfy a certain deformation, it can be restored to its original state, that is, it has elastic properties, which is not limited by the present invention.

It should be noted that in the embodiment of the present invention, the elastic glue can be uniformly coated along the peripheral edge of the cover glass 210 and the stepped structure of the rectangular frame 230 with the same thickness, so as not to affect the cover glass. The display function of 210 is subject to change, and the present invention does not limit this.

It should be understood that the highest position of the rectangular frame 230 may be lower, flush, or higher than the upper surface of the cover glass 210, which is not limited in the present invention.

Optionally, the cover glass 210 and the buffer member 220 may be in surface contact.

In particular, Figure 8 is a partial cross-sectional view of yet another embodiment of the present invention. In order to make the cover glass 210 and the cushioning member 220 easier to fit, the cover glass 210 is better protected, and the portion of the cover glass 210 that is connected to the cushioning member 220 may be disposed in a plane parallel to the contact surface of the cushioning member 220. This will further protect the cover glass. Correspondingly, the cover glass 210 is slow There may also be a gap of 0.05 mm between the punch members 220.

Optionally, the cover glass 210 is a cover glass with a rectangular structure, the four corners of the cover glass of the rectangular structure are respectively chamfered, and the buffer member 220 is disposed on the cover glass 210. The four arcs are chamfered, and the plane of the buffer member 220 contacting the surface of the cover glass 210 is at an angle α with the plane of the inner wall of the rectangular frame 230.

Specifically, in the embodiment of the present invention, the four corners of the cover glass of the rectangular structure are respectively chamfered by a circle, and the height of the straight triangular prism whose bottom surface is a right triangle, that is, the height of the buffer member 220 can be set according to a specific application. 9 is a partial cross-sectional view of a cover glass assembly according to an embodiment of the present invention. For example, the height of the straight triangular prism whose bottom surface is a right triangle may be 0.5 mm, which is not limited in the present invention. Thus, the cushioning member 220 can be disposed at even intervals around the four arc chamfers of the cover glass 210, as shown in FIG. 10 as a partial front view of the cover glass assembly. In the embodiment of the present invention, the separation distance may be set according to an actual application, which is not limited by the present invention. For example, the separation distance may be set to 1 mm, thereby improving the resistance of the terminal device in four corners during the falling process. Drop performance.

It should be noted that in order to reduce the damage of the cover glass 210, the cushioning member 220 may also be disposed along a circumference of the cover glass 210, and the embodiment of the present invention is not limited to the four corners. It should also be noted that the spacing distance may also be unevenly arranged as needed, which is not limited by the present invention.

It should also be understood that in practical applications, in order to make the cushioning member 220 unsharp, to increase the contactability of the cushioning member 220, the four corners of the surface of the cushioning member 220 that are in contact with the cover glass 210 are generally chamfered. The chamfering angle can be set to 45 degrees, 50 degrees, or 60 degrees, etc., which is not limited in the present invention.

Alternatively, the angle α satisfies: 20° ≤ α ≤ 30°.

Specifically, the cushioning member 220 generates a force F to the cover glass 210, and the angle between the force F and the plane in which the cover glass 210 is located may be further defined as 20°≤α≤30°. For example, a surface of the buffer member 220 that is in contact with the cover glass 210 is disposed at an angle α with a plane in which the inner wall of the rectangular frame 230 is located, and preferably the angle α ranges from 20 degrees to 30 degrees. The acute angle α may be 20 degrees, 25 degrees, 28 degrees, or 30 degrees, etc., and embodiments of the present invention are not limited thereto.

Optionally, the material of the buffer member 220 is polycarbonate PC or acryl-butadiene-styrene copolymer PA.

Specifically, the material of the buffer member 220 may be polycarbonate PC, acryl-butadiene-styrene copolymer PA, or a synthetic material of PC and PA.

It should be understood that the cushioning member 220 may be other materials such as rubber, which is not limited in the present invention.

Optionally, the rectangular frame 230 may be integral with the buffer member 220.

Specifically, the rectangular frame 230 and the buffer member 220 may be integrated into one body. For example, for the rectangular frame 230 made of metal material and the buffer member 220 made of PC material, the rectangular frame 230 and the buffer member 220 may be injection-molded by a process such as two-color injection molding, nano-injection molding or insert molding.

Therefore, in the cover glass assembly of the embodiment of the present invention, by adding the cushioning member, the level of the cover glass is reduced when it is dropped, and at the same time, it is subjected to a vertical upward component. In addition, due to the elastic properties of the elastic glue, it is also possible to generate a vertical upward component force on the cover glass. The resultant force of the two vertical upward force forces the cover glass to be deformed upwardly, thereby further protecting the cover glass and improving the drop performance of the cover glass.

An embodiment of the present invention provides a terminal device (shown in FIG. 11), comprising the cover glass assembly, the end cover, the display screen, the battery and the chip according to any one of the preceding items, wherein the display is arranged inside the cover glass assembly a screen, the battery and the chip are disposed inside the display screen, and the cover glass assembly, the display screen, the battery and the chip are inside the end cover (as shown in FIG. 12 is a partial enlarged view of the terminal device).

A person skilled in the art can clearly understand that for the convenience and brevity of the description, the specific working process of the system, the cover glass component and the unit described above can refer to the corresponding process in the foregoing method embodiments, and details are not described herein again. .

The above is only the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any equivalent person can be easily conceived within the technical scope of the present invention by any person skilled in the art. Modifications or substitutions are intended to be included within the scope of the invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

A cover glass assembly, comprising:

a cover glass (210), the cover glass (210) comprising at least one corner;

a cushioning member (220) for generating a force F at each of the at least one corner of the cover glass (210), and the direction of the force F is opposite to the cover glass (210) The plane in which the body is located forms an angle α, wherein the angle α satisfies: 0° < α < 90°.
The cover glass assembly of claim 1 wherein the cover glass assembly further comprises:

a rectangular frame (230), the inner wall of the rectangular frame (230) is disposed in a rectangular stepped structure, and the cover glass (210) is bonded to the rectangular stepped structure by an elastic glue (240), A cushioning member (220) is disposed on the rectangular stepped structure.
The cover glass assembly according to claim 1, wherein the cover glass (210) is a cover glass of a rectangular structure.
The cover glass assembly according to claim 2, wherein the cover glass (210) is a cover glass of a rectangular structure, and the four corners of the cover glass of the rectangular structure are respectively circular chamfers The buffer member (220) is disposed at four arc chamfers of the cover glass (210), and a surface of the buffer member (220) contacting the surface of the cover glass (210) The angle α is at a plane with the inner wall of the rectangular frame (230).
The cover glass assembly according to any one of claims 1 to 4, wherein the angle α is equal to: 20° ≤ α ≤ 30°.
The cover glass assembly according to any one of claims 1 to 5, wherein the buffer member (220) is made of polycarbonate PC or acryl-butadiene-styrene copolymer PA.
A terminal device, comprising:

The cover glass assembly, the end cover, the display screen, the battery and the chip according to any one of claims 1 to 6, wherein an inner side of the cover glass unit is provided with the display screen, and the inside of the display screen is provided a battery and the chip, and the cover glass assembly, the display screen, the battery, and the chip are on an inner side of the end cap.