阅读说明：本技术 一种柔性玻璃、柔性玻璃加工方法及柔性显示屏 (Flexible glass, flexible glass processing method and flexible display screen ) 是由 陈岩 尚可 许芳 翁飞军 于 2020-06-24 设计创作，主要内容包括：本申请实施例提供了一种柔性玻璃、柔性玻璃制备方法及柔性显示屏,所述柔性玻璃包括：玻璃板本体,其具可弯折部,所述可弯折部包含目标表面,所述目标表面上具有微裂纹；加强部,其通过对所述微裂纹进行重塑处理而形成,所述加强部用于减少所述微裂纹,以增加所述目标表面的应力。本申请实施例的柔性玻璃,其可弯折部的目标表面通过设置加强部而减少了微裂纹,使得目标表面应力增强,有效降低了目标表面的破裂风险,延长了柔性玻璃的使用寿命。(The embodiment of the application provides flexible glass, a preparation method of the flexible glass and a flexible display screen, wherein the flexible glass comprises: a glass plate body having a bendable portion, the bendable portion including a target surface having microcracks thereon; a reinforcement formed by subjecting the microcracks to a remodeling process, the reinforcement for reducing the microcracks to increase stress of the target surface. The flexible glass provided by the embodiment of the application has the advantages that the target surface of the bendable part of the flexible glass is provided with the reinforcing part, so that microcracks are reduced, the stress of the target surface is enhanced, the fracture risk of the target surface is effectively reduced, and the service life of the flexible glass is prolonged.)

1. A flexible glass comprising:

a glass plate body having a bendable portion, the bendable portion including a target surface having microcracks thereon;

a reinforcement formed by subjecting the microcracks to a remodeling process, the reinforcement for reducing the microcracks to increase stress of the target surface.

2. The flexible glass of claim 1, wherein the target surface is determined according to a particular bending direction of the bendable portion, and the target surface is at least one side of the bendable portion that is under tensile stress when bent in the particular direction.

3. The flexible glass of claim 1, wherein the reshaping process comprises completing the reshaping process of the microcracks by a hot melt process from the target surface.

4. The flexible glass according to claim 3, wherein the reinforcing portion is formed by heat-fusing 3 to 5um along a thickness direction of the glass plate body to a micro-crack portion of the bendable portion.

5. The flexible glass of claim 3, wherein the thermal fusion process comprises a laser thermal fusion process.

6. A method of processing flexible glass comprising:

determining a bendable portion of a glass sheet body, the bendable portion having a target surface with microcracks thereon;

and performing remodeling treatment on the microcracks from the target surface so as to reduce the microcracks and increase the stress of the target surface.

7. The method of claim 6, further comprising:

determining a specific bending direction of the bendable part;

and determining one surface of the bendable part subjected to tensile stress when the bendable part is bent along the specific bending direction as the target surface.

8. The method of claim 6, wherein said remodeling said microcracks comprises:

and finishing the remodeling treatment of the microcrack by a hot melting method from the target surface.

9. The method of claim 8, wherein said remodeling treatment of said microcracks is accomplished by a hot melt process comprising:

melting 3-5 um from the target surface along the direction vertical to the glass plate body;

cooling and solidifying the glass plate body.

10. A flexible display screen comprising a flexible glass according to any one of claims 1 to 5.

Technical Field

The embodiment of the application relates to the field of flexible glass, in particular to flexible glass, a flexible glass processing method and a flexible display screen.

Background

With the advent of products such as folding mobile phones and folding computers, flexible display screens are receiving more and more market attention, however, the existing flexible display screens are all made of flexible glass plates, and due to the fact that the structure of the flexible glass has certain defects, when the flexible display screens are repeatedly bent or bent greatly, the risk of breakage can be increased seriously, and the flexible display screens and the folding equipment are a technical problem which limits the development of the flexible display screens and the folding equipment at present.

Disclosure of Invention

The embodiment of the application provides flexible glass with low fracture risk, a processing method of the flexible glass and a flexible display screen.

In order to solve the above technical problem, an embodiment of the present application provides a flexible glass, including:

a glass plate body having a bendable portion, the bendable portion including a target surface having microcracks thereon;

a reinforcement formed by subjecting the microcracks to a remodeling process, the reinforcement for reducing the microcracks to increase stress of the target surface.

Preferably, the target surface is determined according to a specific bending direction of the bendable portion, and the target surface is at least one surface subjected to tensile stress when the bendable portion is bent along the specific direction.

Preferably, the remodeling treatment includes completing the remodeling treatment of the microcracks by a hot-melt method from the target surface.

Preferably, the reinforcing part is formed by thermally melting 3um to 5um along the thickness direction of the glass plate body at the micro-crack positions of the bendable part.

Preferably, the thermal fusion method comprises a laser thermal fusion method.

Another embodiment of the present application also provides a method for processing flexible glass, including:

determining a bendable portion of a glass sheet body, the bendable portion having a target surface with microcracks thereon;

and performing remodeling treatment on the microcracks from the target surface so as to reduce the microcracks and increase the stress of the target surface.

Preferably, the method further comprises the following steps:

determining a specific bending direction of the bendable part;

and determining one surface of the bendable part subjected to tensile stress when the bendable part is bent along the specific bending direction as the target surface.

Preferably, the remodeling treatment of the microcracks includes:

and finishing the remodeling treatment of the microcrack by a hot melting method from the target surface.

Preferably, the remodeling treatment of the microcracks is completed by a hot-melt method, and comprises the following steps:

melting 3-5 um from the target surface along the direction vertical to the glass plate body;

cooling and solidifying the glass plate body.

Another embodiment of the present application further provides a flexible screen, including a flexible glass, where the flexible glass is the flexible glass described above.

Based on the disclosure of the above embodiments, the beneficial effects of the embodiments of the present application include that by remodeling the microcrack on the target surface of the bendable portion on the glass plate body, the microcrack on the target surface can be effectively reduced, the stress on the target surface is improved, and it is ensured that the flexible glass is not easily broken when being bent based on the target surface of the bendable portion.

Drawings

Fig. 1 is a schematic structural view of a flexible glass in an embodiment of the present invention.

Fig. 2 is a schematic structural diagram of a flexible glass in the prior art when being bent.

Fig. 3 is a flow chart of a method of making flexible glass in an embodiment of the invention.

FIG. 4 is a flow chart of a method of making flexible glass in another embodiment of the present invention.

Reference numerals:

1-a glass plate body; 2-bending part; 3-microcracking; 4-a reinforcement; 5-zero stress layer; 6-inner surface; 7-outer surface

Detailed Description

Specific embodiments of the present application will be described in detail below with reference to the accompanying drawings, but the present application is not limited thereto.

It will be understood that various modifications may be made to the embodiments disclosed herein. The following description is, therefore, not to be taken in a limiting sense, but is made merely as an exemplification of embodiments. Other modifications will occur to those skilled in the art within the scope and spirit of the disclosure.

The accompanying drawings, which are incorporated in and constitute a part of the specification, illustrate embodiments of the disclosure and, together with a general description of the disclosure given above, and the detailed description of the embodiments given below, serve to explain the principles of the disclosure.

These and other characteristics of the present application will become apparent from the following description of preferred forms of embodiment, given as non-limiting examples, with reference to the attached drawings.

It should also be understood that, although the present application has been described with reference to some specific examples, a person of skill in the art shall certainly be able to achieve many other equivalent forms of application, having the characteristics as set forth in the claims and hence all coming within the field of protection defined thereby.

The above and other aspects, features and advantages of the present disclosure will become more apparent in view of the following detailed description when taken in conjunction with the accompanying drawings.

Specific embodiments of the present disclosure are described hereinafter with reference to the accompanying drawings; however, it is to be understood that the disclosed embodiments are merely examples of the disclosure that may be embodied in various forms. Well-known and/or repeated functions and structures have not been described in detail so as not to obscure the present disclosure with unnecessary or unnecessary detail. Therefore, specific structural and functional details disclosed herein are not to be interpreted as limiting, but merely as a basis for the claims and as a representative basis for teaching one skilled in the art to variously employ the present disclosure in virtually any appropriately detailed structure.

The specification may use the phrases "in one embodiment," "in another embodiment," "in yet another embodiment," or "in other embodiments," which may each refer to one or more of the same or different embodiments in accordance with the disclosure.

Hereinafter, embodiments of the present application will be described in detail with reference to the accompanying drawings.

As shown in fig. 1, an embodiment of the present invention provides a flexible glass including:

a glass plate body 1 having a bendable part 2, the bendable part 2 including a target surface having micro cracks 3;

and a reinforcement 4 formed by subjecting the microcracks 3 to a remodeling process, the reinforcement 4 serving to reduce the microcracks 3 to increase the stress of the target surface.

For example, the glass plate body 1 has one or more bendable portions 2, and the glass plate body 1 can be bent at the position corresponding to the one or more bendable portions 2 in an indefinite direction, such as a unidirectional bending, a bidirectional bending, or even a multidirectional bending. Each bendable portion 2 has a target surface with micro-cracks 3, which micro-cracks 3 reduce the target surface stress, so that the target surface is very prone to crack risk when the corresponding bendable portion 2 is bent, especially when bent at a small bending radius or frequently bent. The above-mentioned microcracks 3 are not necessarily located at the target surface, but may be located inside the glass sheet body 1 and adjacent to the target surface, and are also liable to cause a risk of breakage when the target surface is frequently bent or bent at a small bending radius. In order to avoid or greatly reduce the risk of the fracture, in the present embodiment, the microcracks 3 on the target surface are reshaped to form the reinforced portions 4 capable of eliminating the microcracks 3 on the target surface, so that the target surface stress is increased and the glass plate body 1 is not easily fractured.

Based on the disclosure of the above embodiment, the embodiment of the present application has the beneficial effects that the micro cracks 3 on the target surface of the bendable portion 2 on the glass plate body 1 are reshaped, so that the micro cracks 3 on the target surface are effectively reduced, the stress of the target surface is improved, and the glass plate body 1 is ensured not to be easily broken when being bent based on the target surface of the bendable portion 2.

Further, as shown in fig. 2, when the glass plate body 1 is bent based on a bendable portion 2, the zero stress layer 5 (i.e. the neutral layer) of the glass plate body 1 is located at the thickness center of the glass plate body 1, i.e. at the center layer of the glass plate body 1, and the outer surface 7 of the bent portion of the glass plate body 1, i.e. after bending, the surface deviating from the notch formed by the glass plate body 1 is under the action of tensile stress, and the inner surface 6 of the bent portion is under the action of compressive stress. The experimental detection shows that the limit value of the stress that the bendable part 2 of the glass plate body 1 can bear under the action of the compressive stress is about 6-7 times of the limit value of the stress that the bendable part 2 can bear under the action of the tensile stress, so that the surface of the glass plate body 1 under the action of the tensile stress is easier to crack compared with the surface under the action of the compressive stress. Based on this, the determination of the target surface in the present embodiment needs to be determined according to the specific bending direction of the bendable part 2, and the target surface is at least one surface subjected to the tensile stress when the bendable part 2 is bent along the specific direction. The specific direction is not fixed, i.e. is not fixed to a single direction, and may be determined according to the practical application of the flexible glass. For example, when the flexible glass in the present embodiment is prepared as a flexible display screen and applied to a device to prepare and form a flexible device, it may be determined whether the flexible device has a fixed bendable direction, and a surface of each bendable portion 2 of the flexible glass, which is subjected to tensile stress when bent in the bendable direction, is determined as a target surface based on the fixed bendable direction, and the microcracks 3 on the target surface need to be treated to ensure the service life of the flexible display screen. In practical application, the bending supporting part of the flexible device is not necessarily matched with the bendable part 2 of the flexible glass correspondingly, so that only the target surface of the bendable part 2 corresponding to the bending supporting part of the flexible device in the flexible glass can be processed when the flexible glass is processed, and the expense is saved.

Further, in the present embodiment, when the microcrack 3 is processed, the adopted method includes that the microcrack 3 is remolded from the target surface by a hot melting method, the reinforcing portion 4 is formed based on the remolding process, and the specific processing process includes hot melting 3um to 5um along the thickness direction of the glass plate body 1 to the microcrack 3 of the bendable portion 2, so that the glass plate body 1 enters a molten state under the action of hot melting, and the microcrack 3 is filled and repaired by using the liquid molecules of the glass, thereby achieving the purposes of eliminating the microcrack 3 and reducing the bending hidden trouble. In practice, the way of implementing hot melting is not exclusive, and can be implemented by laser hot melting method. In addition, when the micro cracks 3 are also formed in the glass plate body 1 adjacent to the target surface, the reinforcing portion 4 can be formed by processing in the above manner, and the hot melting depth is not limited to the above threshold range, and can be adjusted according to the thickness of the glass plate body 1, for example, when the glass plate body 1 is made of ultra-thin glass, the hot melting depth is not too deep.

Further, as shown in fig. 3, another embodiment of the present invention also provides a method for processing flexible glass, including:

determining a bendable part of the glass plate body, wherein the bendable part is provided with a target surface, and microcracks are formed on the target surface;

and performing remodeling treatment on the microcracks from the target surface to reduce the microcracks and increase the stress of the target surface.

For example, the bendable portion of the glass plate body is determined by performing a bending test or the like on the glass plate body, and then the position and area of the target surface of the glass plate body are determined based on the actual region of the glass plate body occupied by the bendable portion. And then, processing the microcrack on the target surface, specifically performing remodeling treatment on the microcrack from the target surface, so as to effectively reduce the microcrack on the target surface, improve the stress of the target surface, and ensure that the flexible glass is not easy to break when being bent based on the target surface of the bendable part.

Further, as shown in fig. 2, when the glass plate body is bent based on a bendable portion, the zero stress layer (i.e., the neutral layer) of the glass plate body is located at the thickness center of the glass plate body, i.e., at the central layer of the glass plate body, and the outer surface of the bent portion of the glass plate body, i.e., after bending, the surface facing away from the notch formed by the glass plate body is under the action of tensile stress, and the inner surface of the bent portion is under the action of compressive stress. The experimental detection shows that the limit value of the stress which can be borne by the bendable part of the glass plate body under the action of the compressive stress is about 6-7 times of the limit value of the stress which can be borne by the bendable part under the action of the tensile stress, so that the surface of the glass plate body under the action of the tensile stress is more prone to fracture risk compared with the surface of the glass plate body under the action of the compressive stress. Based on this, as shown in fig. 4, the method in this embodiment further includes:

determining a specific bending direction of the bendable part;

and determining one surface subjected to tensile stress when the bendable part is bent along the specific bending direction as a target surface.

Specifically, the specific direction is not fixed, i.e. is not fixed to a single direction, and may be determined according to the practical application of the flexible glass. For example, when the flexible glass in this embodiment is prepared as a flexible display screen and applied to a device to prepare and form a flexible device, it may be determined whether the flexible device has a fixed bendable direction, and a surface of each bendable portion of the flexible glass, which is subjected to a tensile stress when bent in the bendable direction, is determined as a target surface based on the fixed bendable direction, and micro cracks on the target surface need to be treated to ensure a service life of the flexible display screen. In practical application, the bending supporting part of the flexible device is not necessarily matched with the bendable part of the flexible glass correspondingly, so that only the target surface of the bendable part of the flexible glass corresponding to the bending supporting part of the flexible device can be processed when the flexible glass is processed, and the expense is saved.

Further, with reference to fig. 4, in the present embodiment, when performing the remodeling treatment on the microcrack, the method includes:

and finishing the remodeling treatment of the microcrack by a hot melting method from the target surface.

When the remodeling treatment of the microcrack is completed by a hot melting method, the method comprises the following steps:

melting 3 um-5 um from the target surface along the direction vertical to the glass plate body;

the glass plate body is cooled and solidified.

For example, the microcracks on the target surface or the microcracks which are positioned in the glass plate body and are adjacent to the target surface are treated to eliminate the microcracks, 3 um-5 um hot melting is carried out from the target surface along the direction vertical to the glass plate body, so that the glass plate body is in a molten state under the action of hot melting, at the moment, the microcracks can be filled and repaired by flowing of liquid molecules of glass, and the effects of eliminating the microcracks and reducing the bending hidden danger can be achieved after the glass plate body is cooled. In practical applications, the hot-melting thickness is not limited to the above range, and may be determined according to the thickness of the glass plate body, when the glass plate body is made of ultra-thin glass, any value in the above range may be used as the actual hot-melting depth, and if the glass plate body is thick, the thickness may be increased appropriately based on the above range to ensure that the microcracks are completely eliminated.

Further, when the micro-cracks are subjected to hot melting treatment, a laser hot melting method can be adopted, for example, in the embodiment, femtosecond laser is preferably adopted to realize hot melting, during specific operation, the power of the laser is set to be 4w-5w, the laser frequency is set to be 500KHz, and the hot melting temperature is limited to be 2500-3000 ℃. Of course, the operation method and parameters are not limited to the above, and can be adjusted according to the actual situation, for example, the thickness of the glass plate, the forming material, the size and the position of the microcrack, and the like.

Further, another embodiment of the present invention also provides a flexible screen, which includes a flexible glass, where the flexible glass is the flexible glass described above. The flexible display screen prepared and formed based on the flexible glass has stronger ground surface stress, supports the flexible display screen to be frequently bent or bent with a smaller bending radius, is less prone to fracture compared with the flexible display screen prepared and formed by common flexible glass, and is longer in service life.

The above embodiments are only exemplary embodiments of the present application, and are not intended to limit the present application, and the protection scope of the present application is defined by the claims. Various modifications and equivalents may be made by those skilled in the art within the spirit and scope of the present application and such modifications and equivalents should also be considered to be within the scope of the present application.