CN112897863B - Preparation method of curved glass, curved glass and mobile terminal - Google Patents
Preparation method of curved glass, curved glass and mobile terminal Download PDFInfo
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- CN112897863B CN112897863B CN201911228920.8A CN201911228920A CN112897863B CN 112897863 B CN112897863 B CN 112897863B CN 201911228920 A CN201911228920 A CN 201911228920A CN 112897863 B CN112897863 B CN 112897863B
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- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B23/00—Re-forming shaped glass
- C03B23/02—Re-forming glass sheets
- C03B23/023—Re-forming glass sheets by bending
- C03B23/03—Re-forming glass sheets by bending by press-bending between shaping moulds
Abstract
The disclosure relates to a preparation method of curved glass, the curved glass and a mobile terminal, wherein the preparation method comprises the following steps: cutting the glass base material to obtain a glass substrate with a preset size; performing hot-pressing treatment on the glass substrate to enable two ends of the glass substrate to form arc-shaped bent parts respectively and enable edge parts of the two ends of the glass substrate to form inverted structures respectively, wherein the bending directions of the arc-shaped bent parts and the inverted structures are opposite; and carrying out secondary hot pressing treatment on the arc-shaped bent part so as to enable the arc-shaped bent part to be folded back, so as to obtain the double-curve back-off curved glass. The preparation method disclosed can accurately form the inverted buckle structure, so that the glass substrate forms an accurate bending radian, and the hot pressing module is convenient to carry out hot pressing and take out.
Description
Technical Field
The disclosure relates to the technical field of curved glass preparation, in particular to a curved glass preparation method, curved glass and a mobile terminal.
Background
With the update iteration of consumer electronics, in order to bring better visual experience to users in electronic devices with display screens (such as smart phones, tablet computers, personal digital assistants, and the like), the screen occupation ratio of the display screens is higher and higher, the design of the large-curvature display screen is a direction to be explored in the future, and in order to meet the display design requirements of the curved screen in the future, the processing technology of the large-curvature glass adapted to the display panel becomes a new subject of industry exploration.
Disclosure of Invention
In view of the above, the present disclosure provides a method for manufacturing curved glass, curved glass and a mobile terminal to solve some or all of the above technical problems.
In order to achieve the purpose, the technical scheme adopted by the disclosure is as follows:
according to a first aspect of the embodiments of the present disclosure, there is provided a method for producing a curved glass, including:
cutting the glass base material to obtain a glass substrate with a preset size;
performing hot-pressing treatment on the glass substrate to enable two ends of the glass substrate to form arc-shaped bent portions respectively and enable edge portions of the two ends of the glass substrate to form inverted structures respectively, wherein the two arc-shaped bent portions are in the same bending direction, the two inverted structures are in the same bending direction, and the arc-shaped bent portions are opposite to the inverted structures in bending direction;
and carrying out secondary hot pressing treatment on the arc-shaped bending part so as to enable the arc-shaped bending part to be folded back, so that the curved glass with the inverted buckle structure is obtained.
Optionally, the hot pressing treatment of the glass substrate includes:
and carrying out hot pressing on the glass substrate at a first preset temperature through a preset first hot pressing die so as to simultaneously form the arc-shaped bending part and the inverted buckle structure.
Optionally, the performing a secondary hot pressing process on the arc-shaped bending portion to fold back the arc-shaped bending portion includes:
and carrying out hot pressing on the arc-shaped bending part at a second preset temperature through a preset second hot pressing die so as to enable the arc-shaped bending part to return to a non-bending state.
Optionally, the hot pressing treatment of the glass substrate includes:
when the arc-shaped bending parts are formed through hot pressing, the main body part connected between the two arc-shaped bending parts is subjected to hot pressing simultaneously, so that the main body part forms an arc surface.
Optionally, the included angle corresponding to the arc forming the arc bending part is alpha, wherein alpha is larger than or equal to 90 degrees and smaller than 180 degrees.
Optionally, an included angle corresponding to an arc forming the inverted structure is β, where β is greater than 90 ° and less than or equal to 180 °.
Optionally, when the two end edge portions of the glass substrate are respectively formed with an inverted structure, the end face of the free end of the inverted structure is parallel to the main body portion connected between the two arc-shaped bending portions.
According to a second aspect of the embodiments of the present disclosure, there is provided a curved glass manufactured by the method for manufacturing a curved glass according to any one of the above aspects, wherein both side edge portions of the curved glass are inverted structures, and the two inverted structures are formed by bending towards opposite directions.
Optionally, the included angle corresponding to the arc forming the inverted structure is β, where β is greater than 90 ° and less than or equal to 180 °.
According to a third aspect of the embodiments of the present disclosure, there is provided a mobile terminal including the curved glass as described in the above embodiments.
The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: this disclosed preparation method is when glass substrate hot pressing forms the back-off structure, the arc flexion opposite with the crooked orientation of back-off structure is prepared, then through secondary hot pressing so that the arc flexion is inflection, so that glass substrate preparation becomes hyperbolic back-off curved surface glass, this preparation method can form the back-off structure accurately, so that the glass substrate forms accurate crooked radian, and be convenient for the hot pressing module carries out hot pressing and takes out, this back-off structure can adapt to the side and extend to the display panel that the back shows, satisfy the user to the corresponding terminal high-quality appearance requirement who possesses curved surface glass.
It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.
Drawings
FIG. 1 is a flow chart illustrating a method of making a curved glass according to an exemplary embodiment of the present disclosure;
FIG. 2 is a schematic structural view of a curved glass after autoclaving as shown in an exemplary embodiment of the present disclosure;
FIG. 3 is a schematic structural view of a hyperbolic inverse-buckled curved glass according to an exemplary embodiment of the present disclosure;
FIG. 4 is a schematic structural view of a curved glass after autoclaving as shown in yet another exemplary embodiment of the present disclosure;
FIG. 5 is a schematic structural view of a hyperbolic inverse-buckled curved glass according to still another exemplary embodiment of the present disclosure;
fig. 6 is a schematic structural view of a hyperbolic inverse-buckled curved glass according to another exemplary embodiment of the present disclosure.
Detailed Description
The present disclosure will be described in detail below with reference to specific embodiments shown in the drawings. These embodiments do not limit the disclosure, and structural, methodological, or functional changes made by those skilled in the art according to these embodiments are included in the scope of the disclosure.
The terminology used in the present disclosure is for the purpose of describing particular embodiments only and is not intended to be limiting of the disclosure. As used in this disclosure and the appended claims, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.
In the following, some embodiments of the present disclosure will be described in detail with reference to the accompanying drawings, and features in the following examples and embodiments may be combined with each other without conflict.
As shown in fig. 1, in a first aspect of the embodiments of the present disclosure, there is provided a method for producing a curved glass, the method comprising:
s101, cutting the glass base material to obtain a glass substrate with a preset size.
In this embodiment, a numerically-controlled machine tool is used to perform cutting processing on a large-sized glass substrate according to a predetermined size and shape, that is, a large piece of glass substrate is cut into a small piece of glass substrate corresponding to a predetermined size, so as to obtain a glass substrate with a predetermined size, where the glass substrate with the predetermined size matches the size of the mobile terminal. It should be noted that, since the glass substrate needs to be provided with the inverted structure, the size of the glass substrate with the preset size is larger than that of the mobile terminal, and at this time, the glass substrate is in a planar shape.
S102, carrying out hot-pressing treatment on the glass substrate to enable two ends of the glass substrate to form arc-shaped bent portions respectively and enable edge portions of the two ends of the glass substrate to form inverted structures respectively, wherein the two arc-shaped bent portions are same in bending direction, the two inverted structures are same in bending direction, and the arc-shaped bent portions are opposite to the inverted structures in bending direction.
In this embodiment, as shown in fig. 2 and 4, the arc-shaped bending portion 12 and the inverted structure 13 are formed simultaneously, the bending direction of the arc-shaped bending portion 12 is the same downward, and the bending direction of the inverted structure 13 is the same upward. The two arc-shaped bending parts 12 are symmetrically arranged relative to the central point of the glass substrate, and the two inverted buckle structures 13 are symmetrically arranged relative to the central point of the glass substrate. The curved portion 12 is located near the center of the glass substrate relative to the inverted buckle structure 13 on the same side.
The hot-pressing treatment of the glass substrate specifically comprises: the glass substrate is hot-pressed at a first predetermined temperature by a preset first hot-pressing mold to simultaneously form the arc-shaped bent portion 12 and the undercut structure 13. The first hot pressing mold includes an upper die and a lower die disposed opposite to each other. The upper and lower dies have a first press-fit portion (i.e., a fit of a concave portion and a convex portion) that cooperate with each other to form the arcuate curved portion 12, and a second press-fit portion (a fit of a convex portion and a concave portion) that cooperate with each other to form the undercut structure. The first pressing portion and the second pressing portion are two and are symmetrically arranged. The first predetermined temperature may be set with reference to a general hot pressing process temperature, and specifically may be set to 500 to 800 ℃.
Placing a glass substrate in a planar shape between an upper press mold and a lower press mold of a first hot press mold at the time of hot press processing of the glass substrate; gradually heating the glass substrate by a heater until the temperature reaches a first preset temperature, and gradually heating the glass substrate to a softening state; and then pressing to drive the upper pressing die and the lower pressing die to be pressed together, wherein the glass substrate is deformed along with the shape of the first hot pressing die so as to simultaneously form the glass substrate with the arc-shaped bending part 12 and the inverted buckle structure 13.
As shown in fig. 6, since the glass substrate has a planar shape, when the curved portion 12 and the inverted structure 13 are formed in the above steps, the glass plate material between the two inverted structures 13 is planar. In order to satisfy the stereoscopic effect of the display screen, the display screen needs to be configured as a 3D curved screen, and correspondingly, the curved glass 10 needs to be made into an arc shape. Specifically, in step S102, the hot press treatment of the glass substrate specifically includes: in the hot pressing for forming the arc-shaped bent portions 12, the body portion 11 connected between the two arc-shaped bent portions 12 (i.e., the portion between points a and B in the drawing) is hot pressed at the same time, so that the body portion 11 of the glass substrate forms an arc surface.
In this step, the arc-shaped bending portion 12 and the main body portion 11 of the glass substrate share the first hot pressing mold, the main body portion 11 of the glass substrate is heated while the arc-shaped bending portion 12 is heated, and after the temperature is gradually raised to reach the first preset temperature, the main body portion 11 of the glass substrate is pressed together through the first hot pressing mold, so that the arc-shaped main body portion 12 of the glass substrate forms an arc surface.
S103, carrying out secondary hot pressing treatment on the arc-shaped bent part to enable the arc-shaped bent part to be folded back, so as to obtain the curved glass with the inverted buckle structure.
In this embodiment, as shown in fig. 3 and 5, performing the second hot pressing process on the arc-shaped bending portion 12 to fold back the arc-shaped bending portion 12 specifically includes: and hot-pressing the arc-shaped bending part 12 at a second preset temperature through a preset second hot-pressing die so as to restore the arc-shaped bending part 12 to a non-bending state, specifically, flattening or having a certain radian. The opposite sides of the upper die and the lower die of the second hot pressing die are flat or arc surfaces, so that the arc bending part 12 is flattened or has a certain radian. The second predetermined temperature may be set with reference to a general hot pressing process temperature, and specifically may be set to 500 to 800 ℃.
The method comprises the following steps: after the formed glass substrate is taken out, the arc-shaped bending part 12 is gradually heated by the heater to reach a second preset temperature, so that the arc-shaped bending part 12 is gradually heated to be softened, and then the upper pressing film and the lower pressing film are pressed and driven to be pressed, so that the arc-shaped bending part 12 is folded back to form a plane or an arc surface. At this time, the inverted structure rotates along with the glass substrate to form a hook-back structure on both sides of the glass substrate, that is, the inverted structure on both sides is formed by bending inward, so that the free end of the inverted structure can extend to the back of the mobile terminal, thereby obtaining the curved glass 10 with the inverted structure.
The hyperbolic inverted curved glass 10 can enable the free end of the inverted structure to be bent and extend to the back of the terminal main body of the mobile terminal, and can meet the requirement of displaying at the edge part of the back; or the free end of the inverted structure can extend to cover the back of the whole terminal main body, so that the requirement that the back of the mobile terminal can display is met.
In the present disclosure, the two ends of the glass substrate are respectively formed with the arc-shaped bending portions 12 having the same bending direction, and the edge portions of the two ends of the glass substrate are respectively formed with the inverted structures having the same bending direction, and the arc-shaped bending portions 12 and the inverted structures have opposite bending directions. As can be seen from the figure, the arc-shaped bending portion 12 is bent downwards, and the inverted structure is bent upwards. Wherein, the included angle corresponding to the arc forming the arc bending part 12 is alpha, wherein, alpha is more than or equal to 90 degrees and less than 180 degrees, the included angle corresponding to the arc forming the back-off structure is beta, wherein, beta is more than 90 degrees and less than or equal to 180 degrees.
When the glass substrate is formed with the inverted structures having the same bending direction at the edge portions of both ends, the end surfaces (i.e., end surfaces shown in the figure) of the free ends of the inverted structures are parallel to the main body portion 11 of the glass substrate. Namely, the included angle alpha corresponding to the arc forming the arc bending part 12 is any angle within the limited range, and the end surface of the free end of the reversing structure is always kept parallel to the main body part 11 of the glass substrate, so that different reversing degrees of the reversing structure are controlled when the double-curve reverse-curve glass 10 is formed. The end face of the free end of the inverted structure is a side face in the width direction when the glass substrate is flat.
In an embodiment, as shown in fig. 2 and 3, when the included angle α corresponding to the arc forming the arc bending portion 12 is 90 °, the included angle β corresponding to the arc forming the inverted structure may be up to 180 ° at maximum. At the moment, two pressing dies are oppositely pressed and pressed for one-time forming through a first hot pressing die; and then, the arc-shaped bending part 12 is hot-pressed and folded to form an inverted structure at two ends of the glass substrate, and the extending direction of the free end of the inverted structure is parallel to the main body part 11 of the glass substrate.
In yet another embodiment, as shown in fig. 4 and 5, when the included angle α corresponding to the arc forming the arc bending part 12 is 110 °, the included angle β corresponding to the arc forming the undercut structure may be up to 120 ° at most. At the moment, two pressing dies are oppositely pressed and pressed for one-time forming through a first hot pressing die; and then, the arc-shaped bending part 12 is hot-pressed and folded back to form an inverted buckle structure at two ends of the glass substrate. After the glass substrate is formed into the hyperbolic inverted curved surface glass 10, when beta is 120 degrees, an included angle between an extension line of a free end of the inverted structure and the main body part 11 of the glass substrate is 20 degrees.
This disclosed preparation method is when glass substrate hot pressing forms the back-off structure, the arc flexion opposite with the crooked orientation of back-off structure is prepared, then through secondary hot pressing so that the arc flexion is inflection, so that glass substrate preparation becomes hyperbolic back-off curved surface glass, this preparation method can form the back-off structure accurately, so that the glass substrate forms accurate crooked radian, and be convenient for the hot pressing module carries out hot pressing and takes out, this back-off structure can adapt to the side and extend to the display panel that the back shows, satisfy the user to the corresponding terminal high-quality appearance requirement who possesses curved surface glass.
According to a second aspect of the embodiments of the present disclosure, there is provided a curved glass manufactured by the method for manufacturing a curved glass according to any one of the embodiments, wherein both side edge portions of the curved glass are inverted structures, and the two inverted structures are formed by bending toward opposite directions. Wherein, the included angle corresponding to the arc forming the back-off structure is beta, wherein, beta is more than 90 degrees and less than or equal to 180 degrees. The curved glass can cover the back of the terminal main body of the mobile terminal, so that high screen occupation ratio of the display screen is realized, the design of the large-curvature display screen is met, and better visual experience is brought to a user.
The curved glass according to the embodiment of the present invention can be obtained by the above-described method for producing curved glass. All implementation modes in each embodiment of the preparation method of the curved glass are suitable for the embodiment of the curved glass, and the same technical effect can be achieved.
According to a third aspect of the embodiments of the present disclosure, there is also provided a mobile terminal including a terminal body, a display panel mounted on the terminal body, and the curved glass of the above-mentioned embodiments. This display panel is the LCD screen, and this LCD screen is curved surface screen and extends to the back of terminal main part, and this glass panels of this disclosure can display panel form back-off structure in curved surface glass both sides to can play protection display panel. The mobile terminal can be an electronic device such as a smart phone, a tablet computer, a personal digital assistant and the like.
The embodiment of the curved glass is suitable for the embodiment of the mobile terminal, and the same technical effect can be achieved.
Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.
It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.
Claims (10)
1. A method for preparing curved glass is characterized by comprising the following steps:
cutting the glass base material to obtain a glass substrate with a preset size;
performing hot-pressing treatment on the glass substrate to enable two ends of the glass substrate to form arc-shaped bending parts respectively and enable edge parts of the two ends of the glass substrate to form inverted structures respectively, wherein the bending directions of the two arc-shaped bending parts are the same, the bending directions of the two inverted structures are the same, and the bending directions of the arc-shaped bending parts and the inverted structures are opposite;
and carrying out secondary hot pressing treatment on the arc-shaped bent part so as to enable the arc-shaped bent part to be folded back, so as to obtain the curved glass with the inverted buckle structure.
2. A producing method according to claim 1, wherein said thermocompression treatment of the glass substrate includes:
and hot-pressing the glass substrate at a first preset temperature through a preset first hot-pressing mold to simultaneously form the arc-shaped bending part and the inverted buckle structure.
3. The manufacturing method according to claim 1, wherein the secondary hot-pressing treatment of the arc-shaped bent portion to fold back the arc-shaped bent portion includes:
and carrying out hot pressing on the arc-shaped bending part at a second preset temperature through a preset second hot pressing die so as to enable the arc-shaped bending part to return to a non-bending state.
4. A producing method according to claim 3, wherein said thermocompression treatment of the glass substrate includes:
when the arc-shaped bent parts are formed through hot pressing, the main body part connected between the two arc-shaped bent parts is simultaneously subjected to hot pressing, so that the main body part forms an arc surface.
5. The method of claim 1, wherein the arc forming the arcuate bend corresponds to an included angle α, wherein α is 90 ° or more and 180 ° or less.
6. The method of claim 1, wherein the arc forming the undercut structure corresponds to an included angle β, wherein β is greater than 90 ° and less than 180 °.
7. The manufacturing method according to claim 1, wherein when the inverted structure is formed at both end edge portions of the glass substrate, respectively, an end face of a free end of the inverted structure is parallel to a main body portion connected between the two arc-shaped bent portions.
8. The curved glass manufactured by the method for manufacturing the curved glass according to any one of claims 1 to 7, wherein both side edge portions of the curved glass are inverted structures, and the two inverted structures are formed by bending towards opposite directions.
9. The curved glass according to claim 8, wherein the arc forming the undercut structure corresponds to an angle β, wherein β is greater than 90 ° and less than 180 °.
10. A mobile terminal characterized by comprising the curved glass according to claim 8 or 9.
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| CN201911228920.8A CN112897863B (en) | 2019-12-04 | 2019-12-04 | Preparation method of curved glass, curved glass and mobile terminal |
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| CN201911228920.8A CN112897863B (en) | 2019-12-04 | 2019-12-04 | Preparation method of curved glass, curved glass and mobile terminal |
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| CN112897863B true CN112897863B (en) | 2022-10-11 |
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| CN113362722B (en) * | 2021-06-24 | 2023-05-30 | 云谷（固安）科技有限公司 | Cover plate, display panel and preparation method of display panel |
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| KR101300020B1 (en) * | 2011-09-05 | 2013-08-29 | 주식회사 토비스 | Method for manufacturing display panel with curved shape |
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| CN108687572A (en) * | 2017-04-04 | 2018-10-23 | 旭硝子株式会社 | Manufacturing method, tabular component and the aperture member of tooling member |
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