CN113461318A

CN113461318A - Preparation method of shell, display assembly and electronic device

Info

Publication number: CN113461318A
Application number: CN202110719969.4A
Authority: CN
Inventors: 周峰; 李聪
Original assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Current assignee: Guangdong Oppo Mobile Telecommunications Corp Ltd
Priority date: 2021-06-28
Filing date: 2021-06-28
Publication date: 2021-10-01
Anticipated expiration: 2041-06-28
Also published as: CN113461318B

Abstract

The application discloses preparation method, casing, display module and electron device of casing, and preparation method of casing includes: and (3) putting the glass tube substrate into a mold, and carrying out hot extrusion molding on the glass tube substrate at a preset temperature to form at least two continuous surfaces on the glass tube substrate to obtain the shell. Wherein the predetermined temperature is greater than the transition point of the glass tube substrate and less than the melting point of the glass tube substrate. Through the mode, the shell with high screen occupation and high integrity can be prepared.

Description

Preparation method of shell, display assembly and electronic device

Technical Field

The present disclosure relates to the field of electronic devices, and particularly, to a method for manufacturing a housing, a display module, and an electronic device.

Background

In the mobile phone industry, full-screen is a broader definition of ultra-high screen than mobile phone design. The explanation is that the front of the mobile phone is all screens, so that the effect of screen full view is achieved. In pursuit of screen fractions approaching, and even exceeding, 100%, many manufacturers use curved screens to boost screen fractions.

The current screen with high screen ratio is prepared by hot bending and forming a piece of flat glass, so that the edge of the flat glass forms a curved cambered surface. Although the screen with a larger screen ratio can be prepared by using the method, the screen is not strong in one body, the cambered surface is not continuous, and the method has certain limitations on dynamic expressions such as colors, patterns and animations. In order to further satisfy the aesthetic property and visual impact of the screen, a screen with stronger integrity and larger screen ratio is also needed.

Disclosure of Invention

The technical problem mainly solved by the application is to provide a preparation method of a shell, the shell, a display assembly and an electronic device, and a screen with a large screen ratio can be prepared.

In order to solve the technical problem, the application adopts a technical scheme that: provided is a method for manufacturing a case, including: and (3) putting the glass tube substrate into a mold, and carrying out hot extrusion molding on the glass tube substrate at a preset temperature to form at least two continuous surfaces on the glass tube substrate to obtain the shell. Wherein the predetermined temperature is greater than the transition point of the glass tube substrate and less than the melting point of the glass tube substrate.

In order to solve the above technical problem, another technical solution adopted by the present application is: the shell is prepared by the shell preparation method provided by the application. The at least two continuous surfaces of the shell comprise a first display surface and a second display surface, the first display surface is opposite to the second display surface, and the first display surface and the second display surface are connected through two opposite arc surfaces.

In order to solve the above technical problem, another technical solution adopted by the present application is: the utility model provides a display module, display module include the casing and the flexible display screen that this application provided, and the flexible display screen laminating is in the casing.

In order to solve the above technical problem, another technical solution adopted by the present application is: an electronic device is provided, and the electronic device comprises the display assembly and the circuit board provided by the application. Wherein the circuit board is electrically connected with the flexible display screen.

The beneficial effect of this application is: unlike the prior art, the present application performs hot extrusion molding of a glass tube substrate at a predetermined temperature, and can form at least two continuous faces on the glass tube substrate. The shell obtained finally has at least two continuous surfaces, the surfaces of the shell are of a closed structure and have strong integrity, and more possibilities and technical senses are provided for the induction operation of the shell and the diversification of the subject CMF.

Drawings

FIG. 1 is a schematic flow chart diagram illustrating one embodiment of a method of making a housing according to the present application;

FIG. 2 is a schematic flow diagram of an implementation of the method of FIG. 1;

FIG. 3 is a schematic flow chart diagram of another embodiment of a method of making a shell according to the present application;

FIG. 4 is a three-view illustration of an embodiment of the housing of the present application;

FIG. 5 is a schematic structural diagram of an embodiment of a display device of the present application;

FIG. 6 is an enlarged view of area A of FIG. 5;

FIG. 7 is a schematic diagram of a front side structure of an electronic device according to an embodiment of the present disclosure

FIG. 8 is a schematic diagram of a backside structure of an embodiment of an electronic device of the present application;

FIG. 9 is a schematic diagram of an exploded structure of an embodiment of an electronic device according to the present application

Fig. 10 is a partial structural view of the section I-I in fig. 7.

Detailed Description

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

Embodiments of a method of manufacturing a housing, a display module, and an electronic device are provided below. As used herein, an "electronic device" (or simply "terminal") includes, but is not limited to, a device that is configured to receive/transmit communication signals via a wireline connection, such as via a Public Switched Telephone Network (PSTN), a Digital Subscriber Line (DSL), a digital cable, a direct cable connection, and/or another data connection/network, and/or via a wireless interface (e.g., for a cellular network, a Wireless Local Area Network (WLAN), a digital television network such as a DVB-H network, a satellite network, an AM-FM broadcast transmitter, and/or another communication terminal). A communication terminal arranged to communicate over a wireless interface may be referred to as a "wireless communication terminal", "wireless terminal" or "mobile terminal". Examples of mobile terminals include, but are not limited to, satellite or cellular telephones; a Personal Communications System (PCS) terminal that may combine a cellular radiotelephone with data processing, facsimile and data communications capabilities; PDAs that may include radiotelephones, pagers, internet/intranet access, Web browsers, notepads, calendars, and/or Global Positioning System (GPS) receivers; and conventional laptop and/or palmtop receivers or other electronic devices that include a radiotelephone transceiver. A cellular phone is an electronic device equipped with a cellular communication module. The display component is used for displaying information of the electronic device to a user and facilitating the interaction between the user and the electronic device. The shell is a structure for protecting and packaging the flexible display screen in the display assembly and is in direct contact with a user. In the present application, the housing comprises at least two continuous faces, which are strong in integrity.

Referring to fig. 1 and 2, in the method for manufacturing the housing of the present application, the method may include:

s11: the glass tube substrate is placed in a mold.

The glass tube substrate 100 prepared in advance is loaded in the molding groove of the mold 200. In this embodiment, the mold 200 may include an upper mold 210 and a lower mold 220, the upper mold 210 and the lower mold 220 are engaged with each other to form the molding groove of the mold 200, and the glass tube substrate 100 is interposed between the upper mold 210 and the lower mold 220.

Alternatively, the material of the glass tube substrate 100 may be silicate glass, soda lime glass, aluminosilicate glass, sapphire glass, or the like. The material of the mold 200 may be selected to be graphite. The melting point of the graphite is larger than that of the glass material, the thermal expansion coefficient is smaller than that of the glass material, and when the glass is molded by heating and extruding, the influence of physical change generated by the mold 200 when being heated on the molding of the glass tube substrate 100 can be effectively reduced. Meanwhile, the graphite has good heat conductivity, and the mold 200 can rapidly transfer heat to the glass tube substrate 100 during heating; the mold 200 can also rapidly dissipate the heat of the glass tube substrate 100 when the temperature is lowered.

Optionally, the glass tube substrate 100 is cut and prepared by a laser cutting device, a required shell pattern drawing is guided into a computer, and the original glass tube substrate is cut by a large laser cutting device, so that the glass tube substrate 100 with an ideal length is obtained. The laser cutting glass has the advantages of high processing speed, high precision and no micro-crack problem, and the edge of the glass subjected to laser cutting can be kept with the original optical performance without being washed and polished.

As shown in fig. 2, in the present embodiment, the glass tube substrate 100 prepared in advance is a cylindrical tube having a hollow tube shape and having two bottom surfaces and a side surface between the two bottom surfaces. The outer side of the glass tube substrate 100 is in direct contact with the mold 200, and the inner side is not in direct contact with the mold 200. The size, shape and thickness of the glass tube substrate 100 depend on the size parameters of the final shell, and the size parameters of the shell directly influence the size parameters of the molding groove of the mold 200. Of course, in other embodiments, the glass tube substrate 100 may be a hollow tubular elliptic cylinder or a polygonal cylinder.

Since the material of the glass tube substrate 100 is different from that of the mold 200, and the coefficient of thermal expansion of the glass tube substrate 100 is usually higher than that of the mold 200, in this embodiment, before the step of mounting the glass tube substrate 100 on the mold 200, it is necessary to calculate a suitable matching gap between the glass tube substrate 100 and the mold 200. The calculation of the proper matching gap between the glass tube substrate 100 and the mold 200 requires consideration of the thermal expansion coefficient of the materials of the glass tube substrate 100 and the mold 200, the temperature, and the thickness of the glass tube substrate 100 before and after hot extrusion. If the gap is too small, the glass tube substrate 100 does not have enough space to expand and cannot be smoothly installed in the mold 200; if the gap is too large, the glass tube substrate 100 is easily extruded unevenly during hot extrusion, so that the product is asymmetric.

Alternatively, after the glass tube substrate 100 is loaded into the mold 200 and before the glass tube substrate 100 is hot-press molded, the glass tube substrate 100 may be preheated to increase the degree of softening of the glass tube substrate 100. The viscosity of the general glass material is reduced along with the temperature increase, so that the viscosity of the glass can be effectively reduced by preheating the glass tube substrate 100, the internal stress of the glass tube substrate is gradually reduced, and the softening degree of the glass tube substrate 100 is increased, so that the subsequent hot extrusion molding is facilitated. The preheating temperature may be selected to be lower than the softening point of the glass tube substrate 100, for example, 300 to 900 ℃. Where the softening point of a glass refers to the temperature at which the glass begins to soften, glass materials of different compositions have different softening points.

Further, the step of preheating the glass tube substrate 100 may include: the mold 200 with the glass tube substrate 100 is sent to 1-7 first process stations for heating. In the preheating process of the glass tube substrate 100, the first process station first heats the mold 200, and the mold 200 transfers the heat to the glass tube substrate 100. The temperature of each first process station is gradually increased, and the temperature of the glass tube substrate 100 is also gradually increased after being preheated by each first process station. The glass tube substrate 100 can be fully heated by using the gradual temperature rise mode, and the condition that internal stress is generated due to uneven heating inside and outside the glass tube substrate 100 and overlarge temperature is prevented. And the provision of a plurality of first process stations for successively aligning the glass tube substrate 100 can shorten the production cycle of the product.

Further, in the step of preheating the glass tube substrate 100 by passing through 1 to 7 first process stations, the temperature of the preheating zone of the first process station is 300 to 900 ℃. For example, when the glass tube substrate 100 is preheated through 7 first process stations, the temperature of the preheating zone of each first process station may be 300 degrees celsius, 400 degrees celsius, 500 degrees celsius, 600 degrees celsius, 700 degrees celsius, 800 degrees celsius, 900 degrees celsius, and after the preheating is completed, the temperature of the glass tube substrate 100 is raised to about 900 degrees celsius. The residence time of the glass tube substrate 100 at each first process station may be 50 to 600 seconds, for example, 50 seconds, 100 seconds, 200 seconds, 300 seconds, 400 seconds, 500 seconds, 600 seconds. The heating time is generally determined based on the preheating condition of the glass tube substrate 100, and after the glass tube substrate 100 is sufficiently preheated at one first process station, it can be transferred to the next first process station. The glass material, thickness of the glass tube substrate 100 itself, or the temperature difference between the two first process stations may also have an effect on the heating time. For example, the preheating time required for the glass tube substrate 100 having a large thickness is difficult, or the temperature difference between the previous first process station and the subsequent first process station is large, the preheating time of the glass tube substrate 100 at the subsequent first process station may be long.

In the present embodiment, the glass tube substrate 100 is prepared according to the finally required housing parameters, and the glass tube substrate 100 is loaded into the mold 200. After the glass tube substrate 100 is installed, preheating can be performed first, so that the softening degree of the glass tube substrate 100 is improved, and hot extrusion molding is facilitated. After the above steps are completed, the following hot extrusion molding step may be performed.

S12: and carrying out hot extrusion molding on the glass tube substrate at a preset temperature to form at least two continuous surfaces on the glass tube substrate to obtain the shell.

The mold 200 is pressed at a predetermined temperature, and the glass tube substrate 100 is then subjected to the pressure hot extrusion molding by the mold 200. Wherein, the mold 200 extrudes the side surface (the side surface of the cylindrical tube) of the glass tube substrate 100, the direction of the pressure applied by the mold 200 to the glass tube substrate 100 is perpendicular to the side surface of the glass tube substrate 100, so that the glass tube substrate 100 deforms after the hot extrusion, the side surface of the glass tube substrate 100 deforms to form at least two continuous surfaces, and finally the shell 300 is prepared. The predetermined temperature is greater than the transition point of the glass tube substrate 100 and less than the melting point of the glass tube substrate 100, and may be 500 to 900 degrees celsius. The transition point of glass means a temperature at which the glass loses its glass state, plastic deformation can occur, and physical properties begin to change rapidly, the melting point of glass means a temperature at which the glass begins to melt, and glass of different compositions have different transition points and melting points.

In this embodiment, the upper mold 210 and the lower mold 220 are forced to close each other, so as to extrude the glass tube substrate 100, and the outer side surface of the cylindrical glass tube substrate 100 is pressed to be flattened into a flat surface. The portion of the outer sidewall of the glass tube substrate 100 contacting the upper mold 210 forms a first display surface 301, and the portion of the outer sidewall of the glass tube substrate 100 contacting the lower mold 220 forms a second display surface 302, wherein the first display surface 301 and the second display surface 302 are two continuous surfaces, one side of the first display surface 301 is connected with one side of the second display surface 302 through an arc surface, and the other side of the second display surface 302 is connected with the other side of the second display surface 302 through another arc surface.

Alternatively, the first display surface 301 and/or the second display surface 302 may be a plane or a curved surface, and the shape, size, and curvature of the first display surface 301 and the second display surface 302 are related to the mold 200. For example, in the present embodiment, the molding groove of the upper mold 210 has a central plane and two side arc surface shapes; the first display surface 301 of the prepared shell 300 is a plane, and two sides of the first display surface 301 are cambered surfaces. Those skilled in the art can obtain more embodiments by changing the forming grooves of the mold 200 after reading the present application.

Optionally, the housing 300 may also include more continuous faces. For example, in the exemplary embodiment where the mold 200 has three or more shaped grooves, the shell 300 may be prepared with corresponding continuous surfaces, and one skilled in the art may obtain further embodiments by modifying the shaped grooves of the mold 200 after reading the present application.

In the process of forming at least two continuous surfaces of the glass tube substrate 100 after the hot extrusion, the surface of the glass tube substrate 100 needs to be attached to the mold 200, and the glass tube substrate 100 can be formed into an ideal shape in the mold 200. However, in the actual molding process, the surface of the glass tube substrate 100 may be recessed inward and may not be completely attached to the mold 200 due to softening of the glass tube substrate 100 by heat, and the like. Thus, optionally, in the hot pressing step, the mold 200 thermally adsorbs the surface of the glass tube substrate 100 so that the surface of the glass tube substrate 100 can be closely attached to the molding groove of the mold 200, thus obtaining the desired housing 300. Specifically, a plurality of suction holes (not shown) may be formed in the upper mold 210 and the lower mold 220, respectively, and the suction holes may be opposed to the surface of the glass tube substrate 100, and the glass tube substrate 100 may be thermally sucked by a suction pump, and the surface of the glass tube substrate 100 may be closely attached to the mold 200 by suction.

Further, the hot extrusion step is performed in a continuous forming furnace, the glass tube substrate 100 and the mold 200 are sent into 2 to 5 second process stations to be heated, and the glass tube substrate 100 is hot extruded. The temperature of the heating zone of the second process station is 500-900 ℃, for example, 500 ℃, 600 ℃, 700 ℃, 800 ℃ and 900 ℃. In the hot extrusion, the temperature of each second process station should be kept uniform, the heating zone of the second process station heats the mold 200, and the mold 200 extrudes the surface of the glass tube substrate 100 while transferring heat to the glass tube substrate 100. Wherein the pressure of the mold 200 on the glass tube substrate 100 is not too large or too small, and is preferably 0.1-0.5 MPa, such as 0.1MPa, 0.2MPa, 0.25MPa, 0.3MPa, 0.35MPa, 0.4MPa, and 0.5 MPa. Too much pressure may cause too much deformation amplitude of the glass tube substrate 100, and an ideal shell 300 may not be obtained, or too fast a deformation speed of the mold 200 may not effectively thermally adsorb the glass tube substrate 100; too little pressure may cause the mold 200 not to be pressed down and the glass tube substrate 100 not to be deformed.

Alternatively, the residence time of the glass tube substrate 100 in each second process station for the hot extrusion may be 50 to 600s, for example, 50s, 100s, 200s, 300s, 400s, 500s, 600 s. During the hot extrusion of the glass tube substrate 100 at the second process station, the mold 200 continuously applies pressure to the glass tube substrate 100 to maintain the glass tube substrate 100 in the hot extruded shape.

In this example, at least two continuous surfaces were formed on the glass tube substrate 100 by hot extrusion to obtain the case 300, and the surface of the case 300 was continuous in a closed loop and had a strong surface-to-surface integrity. If the housing 300 is applied to a display screen of an electronic device, the electronic device may have a plurality of continuous screens, and the screen proportion of each screen may exceed 100%, so that the electronic device has a strong technological sense. Meanwhile, the housing 300 may provide more possibilities for the sensing operation of the electronic device and the diversification of the subject CMF.

The beneficial effects that this embodiment realized include: the shell with continuous multiple surfaces, high screen ratio and strong integrity can be prepared; multiple process stations work continuously, and the preparation period is shortened; simple process, high yield and low cost.

In the above method for manufacturing the housing, the temperature of the manufactured housing 300 is high, and therefore, a cooling process is required to be performed on the housing 300. In another embodiment of the method for manufacturing a housing of the present application, as shown in fig. 3, step S12 of fig. 1 may be followed by:

s13: and annealing the shell.

The annealing step requires slow cooling of the housing 30 at a temperature that is preferably below the softening point of the glass tube substrate 100, for example, 400-900 ℃. The shell 300 cannot be directly cooled down quickly after hot extrusion, and the internal stress in the glass needs to be eliminated in a slow cooling mode, so that the stress is relaxed, the glass breakage caused by the internal stress is prevented, and the strength of the shell 300 is improved.

In particular, the annealing step may be performed in a continuous furnace. And (3) conveying the mold 200 with the shell 300 into 3-10 third process stations for heating and slowly cooling. Optionally, the temperature of the annealing area of the third process station may be 400 to 900 degrees celsius, and the temperature of each third process station decreases progressively to achieve the effect of slow temperature reduction. For example, if the mold 200 is to be sequentially sent to 10 third process stations for cooling, the temperature of the annealing area of the sequentially passing 10 third process stations may be 900 degrees celsius, 850 degrees celsius, 800 degrees celsius, 750 degrees celsius, 700 degrees celsius, 600 degrees celsius, 550 degrees celsius, 500 degrees celsius, 450 degrees celsius, 400 degrees celsius. The residence time of the mould 200 in each third process station is 50-600 s, such as 50s, 100s, 200s, 250s, 300s, 400s, 450s, 500s, 600 s. The residence time depends on the actual situation, after the shell 300 is fully cooled and soaked, the shell can be sent to the next third process station, the residence time of the shell 300 in the third process station is also related to the thickness and the material of the shell, and the thicker shell 300 is slow in heating or heat dissipation speed and needs a long time.

The case 300 is heat-exchanged by means of the mold 200 during annealing, and a temperature difference between the upper mold 210 and the lower mold 220 may be adjusted during annealing, so that the temperature of the surface of the case 300 contacting the upper mold 210 is not uniform with the temperature of the surface of the case 300 contacting the lower mold 220. The cooling hardening speed of the lower temperature side is higher than that of the higher temperature side, and the hardening speed of the lower side is prevented from hardening, so that thermal stress is formed, and the shell 300 is partially bent.

Therefore, optionally, the warping of the housing 300 can be adjusted by controlling the temperature difference between the upper mold 210 and the lower mold 220 in the annealing step to make the cooling rate of the surface of the housing 300 slightly different. The temperature difference may be selected from 0-100 degrees celsius, such as 10, 20, 30, 40, 50, 60, 70, 80, 90, 100 degrees celsius. The temperature difference should not be too large, and too large temperature can cause that a surface of casing 300 cools down too fast, produces great thermal stress for casing 300's intensity reduces, the condition of fracture even appears.

S14: the housing is cooled.

The annealed housing 300 is rapidly cooled to room temperature, and the mold 200 is typically rapidly cooled by using cooling water. After the annealing step, the temperature of the shell 300 is about 400 ℃, the internal stress is almost eliminated, the shell 300 only has temporary stress, and the shell 300 can be rapidly cooled under the condition that the shell 300 is not damaged due to the temporary stress.

Specifically, the step of rapid cooling may be performed in 3 to 7 fourth process stations, the mold 200 with the annealed shell 300 is sent to the 3 to 7 fourth process stations and is introduced into cooling water for rapid cooling, the residence time of the mold 200 in each third process station is about 50 to 600s, which may be 50s, 100s, 200s, 250s, 300s, 400s, 450s, 500s, and 600s, and after cooling in the third process station, the shell 300 is cooled to room temperature.

S15: polishing and tempering at least two continuous surfaces.

As can be seen from the above embodiments, the housing 30 includes at least two continuous faces, or more continuous faces. These faces are pressed by the mold 200 and may have uneven, non-smooth surfaces; the inner surface of the housing 30 is formed by the inner surface of the starting glass tube substrate 100, and is not in direct contact with the mold 200, so that the original smoothness and flatness can be maintained.

These continuous faces need to be polished in order to make the surface of the housing 300 clean and flat and to improve the aesthetic appearance and touch comfort of the housing 300. And at least two continuous surfaces of the housing 300 are generally exposed to the outside in later use, and thus, the continuous surfaces need to be tempered to form a stress layer thereon, so as to improve the strength of the housing 300.

Alternatively, the at least two continuous surfaces may be polished by mechanical polishing, chemical polishing, flame polishing, and the polished housing 300 has a bright and clean surface, is comfortable to touch, has no resistance on the surface, and has no foreign body sensation on the touch.

Alternatively, the method of tempering the at least two successive faces may be a chemical tempering process, where the housing 300 is placed in a molten alkali salt (e.g., sodium nitrate, potassium nitrate) bath such that the large radius ions in the bath exchange for the small radius ions on the surface of the housing 300. Due to the volume change after the exchange, the shell 300 forms a compressive stress on the surface in contact with the salt bath and a tensile stress inside, thereby achieving the effect of improving the glass strength. The temperature of the salt bath in the chemical toughening process should be between 380 ℃ and 400 ℃.

In this embodiment, on the basis of the above embodiment of the method for manufacturing a housing, the housing 30 with a high temperature after hot extrusion is annealed, and then rapidly cooled; and polishing and tempering the cooled shell 30. The beneficial effects which can be achieved by the embodiment include: the temperature is slowly reduced to eliminate the thermal stress generated by the shell, and the yield of the product is improved; the shape of the shell can be finely adjusted while annealing; the shell with high strength, cleanness and beauty is obtained.

The above is a description of an embodiment of a method for manufacturing a shell, and in addition, the present application also provides a shell manufactured by using the method for manufacturing a shell of the present application. With regard to the housing provided herein, reference is made to the following description of embodiments of the housing.

Referring to fig. 4, fig. 4 is a three-view diagram of an embodiment of a housing of the present application, in which a is a front view, b is a top view, and c is a left view. In this embodiment, the front view a of the housing 300 is rectangular, the top view b is rectangular with a corner cut, and the left view c is rectangular.

Wherein the housing 300 comprises at least two consecutive faces, the at least two consecutive faces comprising a first display face 301 and a second display face 302. The first display surface 301 and the second display surface 302 are opposite, two sides of the first display surface 301 are arc edges, two sides of the second display surface 302 are arc edges, two sides of the first display surface 301 are connected with two sides of the second display surface 302, the first display surface 301 and the second display surface 302 are closed, and the first display surface 301 and the second display surface 302 are connected in an arc surface mode.

In this embodiment, the center of the first display surface 301 and the second display surface 302 is a plane, the two side edges are arc edges, and the two planes are parallel to each other. In other embodiments, the center of the first display surface 301 and/or the second display surface 302 may also be an arc surface, and the shape of the mold is adjusted to adjust the size parameter of the housing 300.

Optionally, the angle R of the arc edge of the first display surface 301 and/or the second display surface 302 is greater than or equal to 2mm, and may be, for example, 2mm, 2.2mm, 2.5mm, 2.8mm, 3mm, or 3.5 mm. The arc edge R angle of the first display surface 301 or the second display surface 302 refers to the radius of a circle having an arc edge as an arc.

Optionally, the maximum distance between two arc sides of the first display surface 301 and/or the second display surface 302, i.e. the width W of the housing 300, is 60-85 mm, and may be, for example, 60mm, 65mm, 70mm, 75mm, 80mm, 85 mm.

Optionally, the length of the longest side of the first display surface 301 and/or the second display surface 302, that is, the length L of the housing 300, is 145-170 mm, and may be 145mm, 150mm, 160mm, 165mm, and 170 mm.

Optionally, the thickness D of the first display surface 301 and/or the second display surface 302 is 0.4-1.2 mm, and may be, for example, 0.4mm, 0.5mm, 0.6mm, 0.7mm, 0.8mm, 0.9mm, 1.0mm, 1.1mm, 1.2 mm.

Optionally, the thickness H of the housing 300, i.e. the distance between the central plane of the first display surface 301 and the central plane of the second display surface 302, is 5-14 mm, and may be, for example, 5mm, 7mm, 9mm, 11mm, 12mm, 13mm, 14 mm.

The housing 300 of the present embodiment is only a partial embodiment, and those skilled in the art can prepare more embodiments by changing the shape of the mold 200 after reading the present application.

Further, this application still provides a display module. Referring to fig. 5 and 6, fig. 5 is a schematic structural diagram of an embodiment of a display device of the present application, and fig. 6 is an enlarged view of a region a of fig. 5.

Specifically, the display assembly 20 includes a housing 300 and a flexible display screen 21. The housing 300 is prepared by the method for preparing the housing provided by the present application, and the flexible display screen 21 may be an OLED flexible display screen or an AMOLED (Active-matrix organic light-emitting diode ) flexible display screen. The flexible display 21 is attached to the housing 300, and the flexible display 21 in this embodiment may be adhered to the inner wall of the housing 300 by an optical adhesive. The flexible display 21 is a surrounding flexible screen structure, and can be attached to the first display surface 301 and/or the second display surface 302, and since the first display surface 301 and the second display surface 302 are continuous surfaces, the animation displayed by the flexible display 21 can extend from the first display surface 301 to the second display surface 302, and the integrity is strong. And the shell 300 has wide touchable area and strong operability.

In yet another aspect of the present application, an electronic device is also provided. The electronic device 10 may include apparatuses having a display screen, such as a mobile phone, a smart phone, a notebook computer, a digital broadcast receiver, a PDA (personal digital assistant), a PAD (tablet computer), a PMP (portable multimedia player), a navigation device, and the like.

As shown in fig. 7-9, the electronic device 10 in the present embodiment is a surround screen structure, and the oblique lines in fig. 7 and 8 represent the display area of the display screen of the electronic device 10. The electronic device 10 includes a display assembly 20 as provided herein. The electronic device 10 includes, but is not limited to: display module 20, support 11, packaging module 12, camera module 13, circuit board 14, battery 15 and functional device 16. The functional device 16 may include, among other things, a socket, a speaker, a sensor, etc. The support member 11, the camera module 13, the circuit board 14, the battery 15 and the functional device 16 are mounted in the display module 20, and the circuit board is electrically connected to the flexible display screen 21.

Referring further to fig. 10, fig. 10 is a schematic partial structure view of section i-i of fig. 7, which is located at the edge of the electronic device 10. Specifically, the display module 20 of the present embodiment includes a housing 300 and a flexible display 21, and the flexible display 21 is adhesively connected to the inner wall of the housing 30 through an optical adhesive 101. The housing 300 has an accommodating space 01 therein, the flexible display screen 21, the supporting member 11, the camera module 13, the circuit board 14, the battery 15 and the functional device 16 are installed in the accommodating space 01, and the packaging member 12 seals the accommodating space 01 to isolate the device in the accommodating space 01 from the outside.

The supporting member 11 includes a supporting body 111 and a buffer body 112, wherein the supporting body 111 has a material rigidity and a hardness greater than those of the buffer body 112, and the buffer body 112 is covered on the outer surface of the supporting body 111 for abutting against the inner surface of the flexible display screen 21 in the display module 20.

Alternatively, the material of the supporting body 111 may be a metal sheet, such as a steel sheet; the buffer body 112 is made of rubber; the support body 111 and the buffer body 112 may be formed by integral injection molding, which may be an insert injection molding process. The supporting body 111 is provided with a plurality of glue-catching holes (not shown) for extending a part of the structure of the buffer body 112 into the supporting body 111, so as to improve the connection strength between the buffer body 112 and the supporting body 111.

The support 11 abuts the inner surface of the display assembly 20 with a contour shape adapted to support the display assembly 20 from the inner surface of the display assembly 20. The buffer body 112 made of silica gel and the support main body 111 made of stainless steel sheet are formed into a whole, and the outside is silica gel and contacts with the back of the flexible display screen 21. The inner part is divided into steel sheets. The silica gel part has certain elasticity while guaranteeing to contact with flexible screen back is complete, when making display module 20 receive external force deformation, plays certain cushioning effect. The stainless steel sheet (support main body 111) mainly serves to ensure the strength and rigidity of the support member 11 as a whole. Simultaneously, make the silica gel part can paste with the screen back completely, avoid appearing laminating not tight and lead to the problem that the display screen module atress is concentrated. In addition, the strength and the rigidity of the stainless steel sheet avoid poor display of the display module screen caused by impact stress of internal devices or structural members.

The stay 11 is slightly deformed by pressing during assembly, and is attached to the back of the display module 20 in abutment with the stay 11, and the stay 11 is brought into close contact with the back of the display module 20 by a resilient force after the deformation. The back of the flexible display screen 21 is completely supported by the silica gel part. The stainless steel sheet part is smooth and flat, so that subsequent assembly of other components and structural members in the electronic equipment is facilitated, and the screen can be prevented from being damaged by other components and structural members in the electronic equipment. Through design support piece 11 structure in this embodiment, can avoid having the concentration of stress because of having disconnected poor and gap between the structure, in the position of corresponding flexible display screen 21, when the screen display, there is the bad problem of demonstration corresponding to the concentration of stress position.

Because the electronic device 10 uses the display module 20 provided by the present application, the housing 300 can provide an ultra-high screen occupation for the electronic device 10, so as to achieve the effect of "all eyes screen". The electronic device 10 has no middle frame, and the edge is also a touchable area, so that the operation feeling is strong. The electronic device 10 may have two or more continuous display screens, so that the screen has high integrity, continuous animation and operation can be realized, and the electronic device has a high technological sense.

In the description of the present application, reference to the description of the terms "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., means that a particular feature, mechanism, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present application. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, mechanisms, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In the description of the present application, "plurality" means at least two, e.g., two, three, etc., unless specifically limited otherwise.

The above description is only an example of the present application and is not intended to limit the scope of the present application, and all modifications of equivalent structures and equivalent processes, which are made by the contents of the specification and the drawings, or which are directly or indirectly applied to other related technical fields, are intended to be included within the scope of the present application.

Claims

1. A method of making a housing, comprising:

placing the glass tube base material in a mould;

carrying out hot extrusion molding on the glass tube substrate at a preset temperature so as to form at least two continuous surfaces on the glass tube substrate to obtain the shell;

wherein the predetermined temperature is greater than a transition point of the glass tube substrate and less than a melting point of the glass tube substrate.

2. The manufacturing method according to claim 1, comprising, between the step of charging the glass tube substrate in the mold and the step of hot-extrusion-molding the glass tube substrate at a predetermined temperature:

preheating the glass tube substrate to soften the glass tube substrate, wherein the preheating temperature is lower than the softening point of the glass tube substrate.

3. The production method according to claim 2, wherein the step of preheating the glass tube substrate includes:

preheating the die through 1-7 first process stations;

the residence time of the die in each first process station is 50-600 s, the temperature range of the preheating zone of the first process station is 300-900 ℃, and the temperature of each first process station increases progressively.

4. The production method according to claim 1, wherein the step of hot-extrusion-molding the glass tube base material at a predetermined temperature includes:

heating the mold to the preset temperature through 2-5 second process stations, wherein the mold carries out hot extrusion molding on the glass tube substrate in each second process station;

the temperature range of the heating area of the second process station is 500-900 ℃, the residence time of the die in each second process station is 50-600 s, and the pressure of the die on the glass tube substrate is 0.1-0.5 Mpa during the hot extrusion molding.

5. A producing method according to claim 1, wherein in said step of hot press-molding the glass tube substrate at a predetermined temperature, the mold attracts the surface of the glass tube substrate so that the surface of the glass tube substrate is brought into close contact with the mold.

6. The production method according to claim 1, further comprising, after the step of hot-extrusion-molding the glass tube substrate at the predetermined temperature:

annealing the shell;

cooling the housing;

and polishing and toughening the two continuous surfaces.

7. A shell is characterized in that a shell body is provided,

the shell is prepared by the preparation method of any one of claims 1 to 6;

the at least two continuous surfaces comprise a first display surface and a second display surface, the first display surface is opposite to the second display surface, and the first display surface is connected with the second display surface through two opposite arc surfaces.

8. The housing according to claim 7, wherein the housing satisfies at least one of the following conditions:

the R angle of the arc edge of the first display surface and/or the second display surface is larger than or equal to 2 mm;

the maximum distance between the two opposite arc surfaces is 60-85 mm;

the maximum side length of the first display surface and/or the second display surface is 145-170 mm;

the thickness of the first display surface and/or the second display surface is 0.4-1.2 mm;

the distance between the first display surface and the second display surface is 5-14 mm.

9. A display assembly, comprising

The housing and flexible display of claim 7 or 8;

wherein, the flexible display screen is attached to the shell.

10. An electronic device comprising the display module of claim 9 and a circuit board; wherein, the circuit board is electrically connected with the flexible display screen.