CN217307719U - Electronic device - Google Patents

Abstract

The application provides an electronic device, relates to the technical field of communication, and can realize narrow frame design. The electronic equipment comprises a cover plate, a middle frame, a display screen and a rear cover; the middle frame comprises a top surface provided with a display screen and a bottom surface provided with a rear cover; the cover plate is positioned on one side of the display screen, which is far away from the middle frame; the display screen comprises a display surface, a bottom surface and a first side surface connecting the display surface and the bottom surface; the cover plate comprises an outer surface, an inner surface and a second side surface connecting the outer surface and the inner surface; the top surface comprises a supporting sub-surface and an inner side sub-surface positioned at the periphery of the supporting sub-surface; the supporting sub-surface supports the display screen; the inner sub-surface comprises a first inner sub-surface partially surrounding the support sub-surface; the first inner side sub-surface is arranged opposite to the first side surface and the second side surface, and the first inner side sub-surface is a plane; the second side surface and the first inner sub-surface enclose a first gap, and the inner surface, the first side surface and the first inner sub-surface enclose a second gap; the first gap and the second gap are filled with soft rubber, and the elastic modulus of the soft rubber is less than or equal to 50 MPa.

Description

Electronic device

Technical Field

The present application relates to the field of communications technologies, and in particular, to an electronic device.

Background

With the increasing popularity of electronic devices, such as mobile phones and tablet computers, have become indispensable social and entertainment tools in people's daily life, and people have increasingly high requirements for electronic devices. Electronic devices with narrow borders are increasingly preferred by users due to their good visual effects.

At present, a glue dispensing table with a certain width needs to be reserved on a middle frame of electronic equipment, and glue filling is dispensed on the glue dispensing table, so that the middle frame is bonded with a cover plate of a display screen, liquid such as external water is prevented from entering the electronic equipment, and a sealing effect is achieved. Due to the arrangement of the dispensing table, the frame of the electronic equipment is wide (including the width of the dispensing table, the distance between the dispensing table and the display screen and the width of a non-display area of the display screen), and the narrow frame design of the electronic equipment cannot be realized.

SUMMERY OF THE UTILITY MODEL

In order to solve the technical problem, the application provides an electronic device. The narrow frame design of the electronic equipment is facilitated.

An embodiment of the present application provides an electronic device, which includes: the display device comprises a cover plate, a middle frame, a display screen and a rear cover; the middle frame comprises a top surface and a bottom surface; the display screen is arranged on the top surface; the rear cover is arranged on the bottom surface; the cover plate is positioned on one side of the display screen, which is far away from the middle frame; along a first direction, the display screen comprises a display surface and a bottom surface which are opposite; the display device further comprises a first side surface for connecting the display surface and the bottom surface; the display surface is positioned on one side of the bottom surface, which is far away from the middle frame; in a first direction, the cover plate comprises opposite outer and inner surfaces; a second side connecting the outer surface and the inner surface; the outer surface is positioned on one side of the inner surface, which is far away from the display screen; the top surface comprises a supporting sub-surface and an inner side sub-surface positioned at the periphery of the supporting sub-surface; the orthographic projection of the display screen on the first plane is positioned in the orthographic projection of the supporting sub-surface on the first plane, and the supporting sub-surface is used for supporting the display screen; the inner side sub-surface comprises a first inner side sub-surface; the first inner side sub-surface partially surrounds the support sub-surface; the first inner sub-surface is respectively opposite to the first side surface and the second side surface, and the first inner sub-surface is a plane; the second side surface and the first inner side sub-surface enclose a first gap, and the inner surface, the first side surface and the first inner side sub-surface enclose a second gap; soft rubber is filled in the first gap and the second gap, and the elastic modulus of the soft rubber is less than or equal to 50 MPa; wherein, the first plane is a plane parallel to the back cover; the first direction is a direction perpendicular to the first plane.

By eliminating the dispensing station, i.e. the top surface of the middle frame comprises only the support sub-surface and the inner sub-surface. Therefore, the width of the frame of the mobile phone is only the width from the display screen to the inner side sub-surface and the width of the non-display area of the display screen, namely the width of the frame of the mobile phone is reduced, and the narrow frame design of the mobile phone can be realized. In addition, a first gap formed by the second side face of the cover plate and the first inner side sub-face 3123 is filled with soft rubber with a small elastic modulus, so that the appearance refinement of the whole machine is good, and the problem of poor appearance refinement caused by the existence of a gap between the second side face of the cover plate and the first inner side sub-face of the middle frame is solved. And the second clearance that the internal surface of apron, the first side of display screen and first inboard sub-face enclose also is filled with the less flexible glue of elastic modulus, like this, wraps up the second side of apron and the first side of display screen through the flexible glue in first clearance and the second clearance, and liquid such as external water can't get into the cell-phone, and the complete machine is waterproof, sweat resistance, corrosion protection nature effects such as salt fog resistance are better. In addition, because flexible glue elastic modulus is less, has the buffering and inhale the shake effect, when the cell-phone is falling etc. and is received great impact, protects the first side of display screen through the flexible glue in the second clearance, prevents that display screen and first inboard sub-face contact from leading to the display screen to appear damaging for the cell-phone has good impact resistance.

In some possible implementations, the electronic device further includes a heat dissipation film and a first glue layer; the heat dissipation film is positioned between the display screen and the middle frame; the first adhesive layer is used for bonding the heat dissipation film on the middle frame; the heat dissipation film comprises a conductive layer; the conducting layer, the first adhesive layer and the supporting sub-surface are provided with a third gap; the soft rubber in the second gap extends to the third gap. The cover plate and the conducting layer are connected through soft glue positioned in the first gap, the second gap and the third gap. Even if like this have static on the apron, the static on the apron can lead the conducting layer through the flexible glue, leads away static through the conducting layer, has avoided static to take place to show unusually at the inside accumulation of display screen, and then leads to the display screen.

In some possible implementation manners, the display screen comprises a display part, a bending part and a binding part, wherein the binding part is bent to one side departing from the display surface of the display screen through the bending part; the inner sub-surface further comprises a second inner sub-surface; the second inner sub-surface is a plane; along the second direction, the bending part is arranged opposite to the second inner side sub-surface; the second side surface, the second inner side sub-surface, the inner surface and the bent part enclose a fourth gap; soft rubber is also filled in the fourth gap; wherein the second direction is a direction perpendicular to the second inner sub-surface. The second side of apron and the first side and the kink of display screen are lived to the complete parcel of flexible glue through first clearance, second clearance and fourth clearance, prevent that liquid such as external water from getting into the cell-phone inside, further promote corrosion protection nature such as waterproof, resistant sweat, resistant salt spray of complete machine. In addition, when the mobile phone is subjected to a large impact when falling down or the like, the bent portion may collide with the middle frame, and after the bent portion and the middle frame collide, there is a risk of a broken line. This application is through setting up the flexible glue in the fourth clearance, because the buffering of flexible glue is inhaled the shake effect, even if the cell-phone receives great impact, the kink of display screen also can not strike the center on, and the flexible glue can not spill over yet, and the reliability of cell-phone is higher.

In some possible implementation manners, on the basis that the display screen includes the display portion, the bending portion and the binding portion, the electronic device further includes a blocking structure; the blocking structure is located between binding portion and the support sub-face, and the blocking structure is used for blocking the flow of flexible glue, prevents that the flexible glue from flowing to other regions, causes display screen and center interference problem.

In some possible implementation manners, on the basis that the electronic device further comprises a blocking structure, the electronic device further comprises a heat dissipation film and a first adhesive layer, wherein the heat dissipation film is located between the display screen and the middle frame; the first adhesive layer is used for bonding the heat dissipation film on the middle frame; the blocking structure and the first adhesive layer are arranged on the same layer. Therefore, a blocking structure does not need to be arranged independently, the manufacturing process steps of the electronic equipment are simplified, and the manufacturing cost of the electronic equipment is reduced.

In some possible implementation manners, on the basis that the display screen includes the display portion, the bending portion and the binding portion, a gap formed by bending the bending portion is a fifth gap; the fifth gap is also filled with soft glue. The flexible glue in through the fifth clearance supports second arc display portion and the kink of display screen, prevents that the cell-phone from taking place deformation and the circuit fracture appears when receiving great impact force, and influence shows, further improves electronic equipment's reliability.

In some possible implementations, the middle frame further includes a plurality of glue filling holes, and the glue filling holes are used for filling the soft glue in the first gap and the second gap.

In some possible implementations, on the basis that the middle frame further comprises a plurality of glue pouring holes, the middle frame further comprises a plurality of vacuum holes, and the first gap and the second gap are vacuumized through the vacuum holes. The phenomenon that the soft rubber cannot be filled in each gap due to the existence of air is avoided.

In some possible implementation modes, on the basis that the middle frame further comprises a plurality of vacuum holes, the glue filling holes and the vacuum holes are sequentially and uniformly arranged at intervals, so that the soft glue can be uniformly filled in gaps among the middle frame, the display screen and the cover plate, and the problems of glue breaking, glue shortage and glue shortage can be avoided.

In some possible implementations, the soft gel includes silicone. Of course, the type of soft glue includes but is not limited to silica gel, and those skilled in the art can select the type of soft glue according to actual situations.

Drawings

Fig. 1 is a schematic structural diagram of an electronic device according to an embodiment of the present disclosure;

fig. 2 is a schematic structural diagram of another electronic device provided in the embodiment of the present application;

fig. 3 is a schematic structural diagram of another electronic device provided in the embodiment of the present application;

FIG. 4 is a cross-sectional view along direction AA' of FIG. 3;

FIG. 5 is a top view of the display screen and center frame of FIG. 3;

FIG. 6 is a further cross-sectional view along AA' of FIG. 3;

FIG. 7 is a further cross-sectional view along AA' of FIG. 3;

FIG. 8 is a further cross-sectional view along AA' of FIG. 3;

FIG. 9 is a cross-sectional view taken along direction BB' of FIG. 3;

FIG. 10 is a further cross-sectional view taken along direction BB' of FIG. 3;

FIG. 11 is a further cross-sectional view taken along direction BB' of FIG. 3;

FIG. 12a is a further cross-sectional view along direction AA' of FIG. 3;

FIG. 12b is a further cross-sectional view taken along direction BB' of FIG. 3;

FIG. 13a is a further cross-sectional view taken along the direction CC' of FIG. 3;

FIG. 13b is a further cross-sectional view taken along direction DD' of FIG. 3;

fig. 14 is a schematic flow chart of a method for manufacturing an electronic device according to an embodiment of the present disclosure;

FIG. 15a is a schematic diagram of a process for manufacturing an electronic device according to an embodiment of the present application;

fig. 15b is a schematic diagram of a process for manufacturing an electronic device according to an embodiment of the present application;

fig. 16a is a schematic diagram of a process for manufacturing an electronic device according to an embodiment of the present application;

fig. 16b is a schematic diagram of a process for manufacturing an electronic device according to an embodiment of the present application;

fig. 17a is a schematic diagram of a process for manufacturing an electronic device according to an embodiment of the present application;

fig. 17b is a schematic diagram of a process for manufacturing an electronic device according to an embodiment of the present application;

fig. 18a is a schematic diagram of a process for manufacturing an electronic device according to an embodiment of the present application;

FIG. 18b is a schematic diagram of a process for manufacturing an electronic device according to an embodiment of the present disclosure;

fig. 19a is a schematic diagram of a process for manufacturing an electronic device according to an embodiment of the present application;

fig. 19b is a schematic diagram of a process for manufacturing an electronic device according to an embodiment of the present application;

fig. 20a is a schematic diagram of a process for manufacturing an electronic device according to an embodiment of the present application;

fig. 20b is a schematic diagram of a process for manufacturing an electronic device according to an embodiment of the present application.

Reference numerals:

10-a display screen; 20-rear cover; 30-middle frame; 40-a cover plate; 50-a transparent adhesive layer; 60-soft glue; 70-a heat dissipation film; 80-a first glue layer; 90-double sided tape; 100-a support layer; 110-a barrier structure; 120-sealing the jig;

11-a main display; 12-a first arcuate display section; 13-a second arc-shaped display part; 14-a display surface; 15-bottom surface; 16-a first side; 17-a bending part; 18-a binding portion; 19-display driving module; 101-polarizer 102-display cell; 103-supporting a back membrane;

31-a top surface; 32-a bottom surface; 33-appearance surface; 34-glue pouring holes; 35-vacuum holes; 311-a support sub-surface; 312-inner minor face; 3121-a first annular edge; 3122-a second annular edge; 3123-first medial sub-surface; 3124-a second medial sub-surface;

41-an outer surface; 42-an inner surface; 43-a second side;

71-a second glue layer; 72-a buffer layer; 73-a conductive layer;

121 — a first channel; 122-a second channel;

s1 — first gap; s2 — second gap; s3 — third gap; s4 — fourth gap; s5-fifth gap.

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 some, but not all, embodiments of the present application. 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.

The term "and/or" herein is merely an association describing an associated object, meaning that three relationships may exist, e.g., a and/or B, may mean: a exists alone, A and B exist simultaneously, and B exists alone.

The terms "first" and "second," and the like, in the description and in the claims of the embodiments of the present application are used for distinguishing between different objects and not for describing a particular order of the objects. For example, the first target object and the second target object, etc. are specific sequences for distinguishing different target objects, rather than describing target objects.

In the embodiments of the present application, words such as "exemplary" or "for example" are used to mean serving as an example, instance, or illustration. Any embodiment or design described herein as "exemplary" or "e.g.," is not necessarily to be construed as preferred or advantageous over other embodiments or designs. Rather, use of the word "exemplary" or "such as" is intended to present concepts related in a concrete fashion.

In the description of the embodiments of the present application, the meaning of "a plurality" means two or more unless otherwise specified. For example, a plurality of processing units refers to two or more processing units; the plurality of systems refers to two or more systems.

The embodiment of the application provides an electronic device, and the electronic device provided by the embodiment of the application can be a mobile phone, a computer, a tablet computer, a personal digital assistant (PDA for short), a vehicle-mounted computer, a television, an intelligent wearable device, an intelligent home device, a Virtual Reality (VR) device, an Augmented Reality (AR) device and the like, and the specific form of the electronic device is not specially limited by the embodiment of the application. For convenience of description, the electronic device is a mobile phone.

For the convenience of clearly describing the following structural features and the positional relationship of the structural features, the positional relationship of the structures in the mobile phone is defined by the X-axis direction, the Y-axis direction and the Z-axis direction. The X-axis direction is the width direction of the mobile phone, the Y-axis direction is the length direction of the mobile phone, and the Z-axis direction is the thickness direction of the mobile phone.

As shown in fig. 1, the cellular phone includes a display 10, a rear cover 20, and a middle frame 30 between the display 10 and the rear cover 20. The display screen 10, the middle frame 30 and the rear cover 20 may enclose an accommodation cavity. The accommodating cavity is internally provided with a printed circuit board, a battery, a functional device (not shown in the figure) and other structures. The functional devices include, for example, a display driving module, a camera, a processor, and the like.

The display screen 10 includes, for example, an Organic Light Emitting Diode (OLED) display panel, an LED display panel including, for example, a Micro-LED display panel, a Mini-LED display panel, and the like. The embodiment of the present application does not specifically limit the type of the display screen 10.

It should be noted that the display screen 10 is not limited to the 2D (Dimensions) display screen shown in fig. 1, and may also be a 2.5D curved screen (not shown) or a 3D curved screen (see fig. 2). When the display screen 10 is a 2.5D curved screen or a 3D curved screen, it may be a hyperbolic screen or a four-curved screen. When the display screen 10 is a hyperbolic screen, referring to fig. 2, the display screen 10 includes not only the main display portion 11, but also the first arc-shaped display portions 12 located at two opposite sides of the main display portion 11 along the X-axis direction. When the display screen 10 is a four-curved-surface screen, referring to fig. 3, the display screen 10 includes not only the main display portion 11, and the first arc display portions 12 located at opposite sides of the main display portion 11 along the X-axis direction, but also the second arc display portions 13 located at opposite sides of the main display portion 11 along the Y-axis direction. The following examples are all explained by taking the display screen 10 as a 3D curved screen, and the 3D curved screen as a quad curved screen as an example.

The material of the rear cover 20 may include, for example, a light-impermeable material such as plastic, cellulose, fiberglass, etc.; and may also comprise a light transmissive material such as glass. The material of the rear cover 20 is not particularly limited in the embodiments of the present application.

Referring to fig. 4, the middle frame 30 includes a top surface 31, a bottom surface 32, and an appearance surface 33 in the Z-axis direction. The display screen 10 is mounted on the top surface 31 of the middle frame 30. The rear cover 20 is mounted to the bottom surface 32 of the middle frame 30.

Along the Z-axis, the display screen 10 includes a display surface 14, a bottom surface 15, and a first side surface 16 connecting the display surface 14 and the bottom surface 15. The display surface 14 is located on a side of the bottom surface 15 facing away from the middle frame 30.

With continued reference to fig. 4, the handset also includes a cover 40. Along the Z-axis, the cover plate 40 is located on a side of the display surface 14 of the display screen 10 facing away from the bottom surface 15. The cover plate 40 is attached to the display surface 14 of the display screen 10, for example, by a transparent adhesive layer 50. The transparent adhesive layer is, for example, Optically Clear Adhesive (OCA) or the like. The orthographic projection of the cover plate 40 on the plane formed by the X axis and the Y axis covers the orthographic projection of the display screen 10 on the plane formed by the X axis and the Y axis so as to protect the display screen 10 and improve the scratch resistance, the carrying impact resistance and the like of the display screen 10. The cover plate 40 includes, for example, glass, Polyimide (PI), Polyethylene terephthalate (PET), and the like.

The cover plate 40 includes opposing outer and inner surfaces 41, 42 and a second side 43 connecting the outer and inner surfaces 41, 42. In the Z-axis direction, the outer surface 41 is located on the side of the inner surface 42 facing away from the display screen 10.

Referring to fig. 5, the top surface 31 of the middle frame 30 includes a support sub-surface 311 and an inner sub-surface 312 located at the periphery of the support sub-surface 311.

The orthographic projection of the display screen 10 on the plane formed by the X axis and the Y axis is positioned in the orthographic projection of the support sub-surface 311 on the plane formed by the X axis and the Y axis. The supporting sub-surface 311 is used for supporting the display screen 10 and internal devices (such as a battery, etc.) in the mobile phone, and provides supporting force for the display screen 10 and the internal devices, so that not only can the collapse of the display screen 10 be avoided, but also the internal devices can be protected.

The orthographic projection of the display screen 10 on the plane formed by the X axis and the Y axis is positioned in the orthographic projection of the support sub-surface 311 on the plane formed by the X axis and the Y axis, and the orthographic projection can be that: the area of the orthographic projection of the support sub-surface 311 on the plane formed by the X axis and the Y axis is equal to the area of the orthographic projection of the display screen 10 on the plane formed by the X axis and the Y axis; alternatively, the area of the orthographic projection of the supporting sub-surface 311 on the plane composed of the X axis and the Y axis is larger than the area of the orthographic projection of the display screen 10 on the plane composed of the X axis and the Y axis.

When the area of the orthographic projection of the supporting sub-surface 311 on the plane formed by the X axis and the Y axis is larger than the area of the orthographic projection of the display screen 10 on the plane formed by the X axis and the Y axis, the inner sub-surface 312 is: when the middle frame 30 and the display screen 10 are placed as shown in fig. 5, the surface of the middle frame 30 is exposed except for the supporting sub-surface 311 uncovered by the display screen 10.

The inner sub-surface 312 includes a first annular edge 3121 and a second annular edge 3122. The first annular edge 3121 is an edge that contacts the exterior surface 33. The second annular edge 3122 is an edge that contacts the support sub-surface 311. The inner sub-surface 312 of the middle frame 30 includes a first inner sub-surface 3123 and a second inner sub-surface 3124. The first inner sub-surface 3123 is a left surface, a right surface, and an upper surface of the middle frame 30 exposed when the middle frame 30 and the display screen 10 are placed as shown in fig. 5, except for the supporting sub-surface 311 not covered by the display screen 10. The second inner sub-surface 3124 is a lower surface of the middle frame 30 that is exposed when the middle frame 30 and the display screen 10 are placed as shown in fig. 5.

The first inner sub-surface 3123 and the second inner sub-surface 3124 are both planar. That is, compared with the prior art in which the dispensing table is arranged on the middle frame, the dispensing table is cancelled on the first inner sub-surface 3123 and the second inner sub-surface 3124 of the embodiment of the present application.

It is understood that when the first and second inner sub-surfaces 3123 and 3124 are provided, the first and second inner sub-surfaces 3123 and 3124 are not absolutely planar due to process limitations and the like. For example, the inner sub-surface 312 has a certain curvature at the connection between the inner sub-surface 312 and the support sub-surface 311.

The first inner sub-surface 3123 is disposed opposite the first side 16 of the display screen 10 and the first inner sub-surface 3123 is disposed opposite the second side 43 of the cover 40. That is, in a direction perpendicular to the plane of the first inner sub-surface 3123, the second lateral surface 43 of the cover plate 40 overlaps with the first inner sub-surface 3123 (i.e., an orthographic projection of the second lateral surface 43 on the plane of the first inner sub-surface 3123 overlaps with the first inner sub-surface 3123), and the first lateral surface 16 of the display screen 10 is located within the first inner sub-surface 3123 (i.e., an orthographic projection of the first lateral surface 16 on the plane of the first inner sub-surface 3123 is located within the first inner sub-surface 3123). And the distance M1 between the first inner sub-surface 3123 and the second lateral surface 43 satisfies a first preset distance in a direction perpendicular to the plane of the first inner sub-surface 3123, so as to prevent the cover plate 40 from being damaged due to contact of the cover plate 40 with the middle frame 30 due to process tolerances. Wherein, the first preset distance is greater than or equal to 0.05 and less than or equal to 0.2 mm. Illustratively, the first predetermined distance is 0.05mm, 0.1mm, 0.12mm, 0.15mm, 0.2mm, etc. The distance M2 between the first inner lateral sub-surface 3123 and the first lateral surface 16 satisfies the second preset distance to prevent the display screen 10 from being damaged due to contact of the display screen 10 with the middle frame 30 due to process tolerance. Wherein the second preset distance is greater than or equal to 0.1mm and less than or equal to 0.8 mm; illustratively, the second predetermined distance is 0.1mm, 0.3mm, 0.45mm, 0.5mm, 0.8mm, etc. The first preset distance and the second preset distance are not limited in the embodiment of the application, and a person skilled in the art can set the first preset distance and the second preset distance according to actual conditions.

The second side surface 43 of the cover plate 40 and the first inner sub-surface 3123 have a first gap S1 therebetween. A second gap S2 is provided between the inner surface 42 of the cover 40, the first side 16 of the display screen 10 and the first inner sub-surface 3123. The first and second gaps S1 and S2 are filled with soft gel 60. The elastic modulus of the soft rubber 60 is less than or equal to 50 MPa. Exemplary glue types for the soft glue 60 include, for example, silicone. Wherein the elastic modulus of the silica gel is 2.5MPa, 2MPa or 1 MPa.

Because in the prior art, a glue dispensing table with a certain width needs to be reserved on the middle frame, and glue is dispensed on the glue dispensing table, so that the middle frame is bonded with the cover plate of the display screen to achieve the sealing effect. And the arrangement of the glue dispensing table causes the frame of the mobile phone to be wider. The present application eliminates the dispensing station, i.e. the top surface 31 of the middle frame only comprises the supporting sub-surface 311 and the inner sub-surface 312. In this way, the width of the frame of the mobile phone is only the width from the display screen 10 to the inner side sub-surface 312 and the width of the non-display area of the display screen 10, that is, the width of the frame of the mobile phone is reduced, so that the narrow frame design of the mobile phone can be realized. In addition, the first gap S1 defined by the second side surface 43 of the cover plate 40 and the first inner sub-surface 3123 is filled with soft glue 60 with a small elastic modulus, so that the appearance refinement of the whole machine is good, and the problem of poor appearance refinement caused by the existence of a gap between the second side surface 43 of the cover plate 40 and the first inner sub-surface 3123 of the middle frame 30 is solved. And the second gap S2 enclosed by the inner surface 42 of the cover plate 40, the first side surface 16 of the display screen 10 and the first inner side sub-surface 3123 is also filled with soft glue 60 with a small elastic modulus, so that the second side surface 43 of the cover plate 40 and the first side surface 16 of the display screen 10 are wrapped by the soft glue 60 in the first gap S1 and the second gap S2, liquid such as external water cannot enter the mobile phone, and the complete machine has good anti-corrosion effects of water resistance, sweat resistance, salt mist resistance and the like. In addition, because flexible glue 60 elastic modulus is less, has buffering and inhale the shock-absorbing effect, when the cell-phone is falling etc. and is received great impact, protect the first side 16 of display screen 10 through the flexible glue in the second clearance S2, prevent that display screen 10 and first inboard sub-face 3123 contact from leading to the display screen 10 to appear damaging for the cell-phone has good shock resistance.

With continued reference to FIG. 4, along the Z-axis, the display screen 10 may include a polarizer 101, a display unit 102, and a supporting backing film 103. Wherein the polarizer 101 is located on a side of the display unit 102 facing away from the supporting backing film 103. Referring to fig. 6, the display screen 10 may include only the display unit 102. Alternatively, referring to fig. 7, the display screen 10 may include a display unit 102 and a support back film 103. Wherein the supporting backing film 103 is located at a side of the display unit facing away from the cover plate 40. The embodiments of the present application do not limit this.

The support back film 103 is used to support the display unit 102 and prevent the display unit 102 from being broken during transfer and transportation. The material of the support back film 103 includes, for example, Polyimide (PI), PET, and the like.

As can be seen from the foregoing, the display screen 10 may be, for example, an OLED display screen. When the display screen 10 is an OLED display screen, the display screen 10 includes a plurality of sub-pixels arranged in an array. Each sub-pixel in the display panel 10 includes a pixel driving circuit and an organic light emitting unit. The pixel driving circuit includes at least one thin film transistor. The thin film transistor includes a source electrode, a drain electrode, a gate electrode, and the like. The organic light emitting unit may include an anode, an organic light emitting layer, and a cathode. The source electrode, the drain electrode, the gate electrode, the pixel electrode, the common electrode, and the like are generally made of metal materials or metal oxide materials. Ambient light may be incident on the metal or metal oxide structure (e.g., cathode) of the display screen 10 and then reflected out, thereby affecting the display. Therefore, by disposing the polarizer 101 above the display unit 102, the human eye cannot see the reflected light generated by the metal or metal oxide structure, thereby improving the contrast of the display panel 10.

With continued reference to fig. 4, the phone also includes a heat dissipating film 70 and a first glue layer 80. The heat dissipation film 70 includes a second adhesive layer 71, a buffer layer 72, and a conductive layer 73 along the Z-axis direction. The second adhesive layer 71 is located on a side of the display screen 10 away from the cover plate 40, the buffer layer 72 is located on a side of the second adhesive layer 71 away from the display screen 10, and the conductive layer 73 is located on a side of the buffer layer 72 away from the second adhesive layer 71. The cushion layer 72 is made of foam, for example. The conductive layer 73 is, for example, a copper sheet. The heat dissipation film 70 is bonded to the support sub-surface 311 of the middle frame 30 through the first adhesive layer 80. The first adhesive layer 80 is, for example, a back adhesive.

Referring to fig. 8, the supporting sub-surface 311, the conductive layer 73 and the first glue layer 80 enclose a third gap S3. The soft rubber 60 in the second gap S2 extends to the third gap S3.

This is so arranged that: static electricity may be present around the cell phone. If external static electricity enters the display screen 10, the display screen 10 may have a problem of display blurring or color distortion when displaying. In the embodiment of the present application, the soft gel 60 in the first gap S1 and the second gap S2 is extended to the third gap S3, and the cover plate 40 and the conductive layer 73 are connected by the soft gel 60 located in the first gap S1, the second gap S2 and the third gap S3. Even if there is static on the apron 40 like this, the static on the apron 40 can lead to the conducting layer 73 through flexible glue 60, leads away static through conducting layer 73, has avoided static to take place to show unusually at display screen 10 inside accumulation, and then leads to display screen 10.

Referring to fig. 9, the display screen 10 includes not only the above-described main display portion 11 and the second arc display portion 13 but also a bending portion 17 and a binding portion 18 along the Y-axis direction. The binding unit 18 binds the display driver module 19. The binding portion 18 to which the display driving module 19 is bound is bent to the side away from the display surface 14 of the display screen 10 by the bent portion 17. The binding portion 18 is connected to a printed circuit board (not shown) through a flexible circuit board (not shown), so that the display driving module 19 drives the main display portion 11, the first arc display portion 12, and the second arc display portion 13 to display according to signals sent by a processor on the printed circuit board.

In order to avoid the stress concentration when the bending portion 17 is bent, which may cause the display screen 10 to be damaged, the bending radius of the bending portion 17 is generally a predetermined bending radius. In order to make the bending radius of the bending portion 17 equal to the predetermined bending radius, with reference to fig. 9, the mobile phone further includes a double-sided adhesive tape 90 and a supporting layer 100 along the Z-axis direction, wherein the double-sided adhesive tape 90 is located on a side of the heat dissipation die 70 facing away from the display screen 10. The support layer 100 is adhered to the heat-dissipating mold 70 by the double-sided adhesive tape 90.

It should be noted that, when the display panel 10 includes the polarizer 101 and/or the supporting back film 103, in order to avoid stress concentration, the polarizer 101 and the supporting back film 103 are not disposed in the region corresponding to the bending portion 17, for example, see fig. 10.

With continued reference to fig. 10, in a direction perpendicular to the plane of the second inner sub-surface 3124, the second side surface 43 of the cover 40 overlaps the second inner sub-surface 3124 (i.e., an orthographic projection of the second side surface 43 on the plane of the second inner sub-surface 3124 overlaps the second inner sub-surface 3124), and the fold 17 of the display screen 10 is located within the second inner sub-surface 3124 (i.e., an orthographic projection of the fold 17 on the plane of the second inner sub-surface 3124 is located within the second inner sub-surface 3124). In the direction perpendicular to the plane of the second inner sub-surface 3124, the distance between the second inner sub-surface 3124 and the second lateral surface 43 satisfies the first predetermined distance, the closest distance M3 between the second inner sub-surface 3124 and the bending portion 17 is a third predetermined distance, the third predetermined distance is greater than the second predetermined distance, and the third predetermined distance needs to prevent process tolerance and bending error, which may cause the display screen 10 to be damaged due to the contact between the display screen 10 and the middle frame 30. Wherein the third preset distance is greater than or equal to 0.15mm and less than or equal to 0.85 mm. Illustratively, the third predetermined distance is 0.15mm, 0.4mm, 0.45mm, 0.5mm, 0.85 mm.

The second side surface 43 of the cover 40, the second inner sub-surface 3124, the inner surface 42 of the cover 40, the second arc display part 13, the bent part 17, the support sub-surface 311, and the binding part 18 enclose a fourth gap S4. The fourth gap S4 is also filled with soft glue 60. The soft glue 60 completely wraps the second side surface 43 of the cover plate 40, the first side surface 16 of the display screen 10 and the bending part 17 through the first gap S1, the second gap S2 and the fourth gap S4, so that liquid such as outside water is prevented from entering the mobile phone, and the corrosion resistance of the whole mobile phone, such as water resistance, sweat resistance, salt mist resistance and the like, is further improved. In addition, when the mobile phone is subjected to a large impact such as falling, the bent portion 17 may collide with the middle frame 40, and after the bent portion 17 collides with the middle frame 40, there is a risk of breaking the wire. This application is through setting up flexible glue 60 in fourth clearance S4, because flexible glue 60' S buffering shakes the effect, even if the cell-phone receives great impact, on the kink 17 of display screen 10 can not strike middle frame 30 yet, and flexible glue 60 can not spill over yet, the reliability of cell-phone is higher.

With continued reference to fig. 10, the second arcuate display portion 13 and the bent portion 17 enclose a fifth gap S5. Soft glue 60 is also filled in the fifth gap S5. The soft rubber 60 in the fifth gap S5 supports the second arc-shaped display part 13 and the bent part 17 of the display screen 10, so that the second arc-shaped display part 13 and the bent part 17 are prevented from being deformed to cause circuit breakage when the mobile phone is subjected to a large impact force, display is influenced, and reliability of the mobile phone is further improved.

In order to construct a closed space, the soft glue 60 can be completely filled in the closed space, so that the soft glue 60 is prevented from flowing to other areas. Referring to fig. 11, a blocking structure 110 is disposed between the binding portion 18 and the supporting sub-surface 311, and the blocking structure 110 is used for blocking the flow of the soft glue 60, so as to prevent the soft glue 60 from flowing to other areas, which causes the problem of interference between the display screen 10 and the middle frame 30.

In this case, the barrier structure 110 is formed by the same process as the first glue layer 80, i.e. the barrier structure 110 is formed when the first glue layer 80 is formed. Illustratively, both the first glue layer 80 and the barrier structure 110 are back glues. Therefore, the blocking structure 110 does not need to be arranged independently, the manufacturing process steps of the mobile phone are simplified, and the manufacturing cost of the mobile phone is reduced.

In order to fill the first space S1, the second space S2, the third space S3, the fourth space S4, and the fifth space S5 with the soft glue 60. Referring to fig. 12a and 12b, a plurality of glue holes 34 are formed on the middle frame 30. The glue filling hole 34 is used for filling the first gap S1, the first gap S1, the second gap S2, the third gap S3, the fourth gap S4 and the fifth gap S5 with the soft glue 60.

In this case, the glue filling hole 34 penetrates the middle frame 30 along the Z-axis direction, and a portion of the glue filling hole 34 communicates with the third gap S3, and the soft glue 60 is filled in the first gap S1, the second gap S2 and the third gap S3 through the portion of the glue filling hole 34. A part of the glue filling holes 34 is communicated with the fourth gap S4, and the soft glue 60 is filled in the fourth gap S4 and the fifth gap S5 through the part of the glue filling holes 34.

In order to prevent the air in the first, second, third, fourth and fifth gaps S1, S2, S3, S4 and S5 from affecting the filling of the soft gel 60. Referring to fig. 13a and 13b, the middle frame 30 is further provided with vacuum holes 35. The first gap S1, the second gap S2, the third gap S3, the fourth gap S4 and the fifth gap S5 are vacuumized by corresponding equipment, so that the situation that the soft glue 60 cannot be filled in the first gap S1, the second gap S2, the third gap S3, the fourth gap S4 and the fifth gap S5 due to the existence of air is avoided.

It should be noted that, in the embodiment of the present application, the positions of the glue filling hole 34 and the vacuum hole 35 in the middle frame 30 are not limited. The skilled person can set the settings according to the actual situation.

In some possible implementations, the soft gel 60 is considered to have poor flow properties. And in order to make the soft glue 60 uniformly fill the gap between the middle frame 30 and the display screen 10 and the cover plate 40. The vacuum holes 35 and the glue filling holes 34 are arranged at intervals and are uniformly arranged on the middle frame 30. Namely, one glue filling hole 34 is arranged between two adjacent vacuum holes 35, and the distance from the glue filling hole 34 to the two vacuum holes 35 is the same. Therefore, the soft glue 60 can be uniformly filled in the gap between the middle frame 30 and the display screen 10 and the gap between the middle frame and the cover plate 40, and the problems of glue failure, glue shortage and glue shortage can be avoided.

An embodiment of the present application further provides a method for manufacturing an electronic device, as shown in fig. 14, which may be specifically implemented by the following steps:

s141, as shown in fig. 15a and 15b, providing an assembly including a middle frame 30, a display screen 10 and a cover plate 40, wherein the cover plate 40 is located on a side of the display screen 10 facing away from the middle frame 30; the middle frame 30 is provided with a plurality of vacuum holes 35 and glue filling holes 34, and the vacuum holes 35 and the glue filling holes 34 are uniformly arranged on the middle frame 30, for example.

The middle frame 30, the display screen 10 and the cover plate 40 enclose a first gap S1, a second gap S2, a third gap S3, a fourth gap S4 and a fifth gap S5. The vacuum hole 35 and the glue filling hole 34 are respectively communicated with the first gap S1, the second gap S2, the third gap S3, the fourth gap S4 and the fifth gap S5.

For specific description of the structures of the middle frame 30, the display screen 10 and the cover plate 40, reference may be made to the foregoing embodiments, and details thereof are not repeated.

S142, as shown in fig. 16a and 16b, the assembly of the display screen 10, the cover plate 40, and the middle frame 30 is fastened by using the sealing jig 120, wherein the sealing jig 120 is provided with a plurality of first channels 121 and a plurality of second channels 122, the plurality of first channels 121 correspond to the plurality of glue filling holes 34 one by one to form a plurality of glue filling channels, and the plurality of second channels 122 correspond to the plurality of vacuum holes 35 one by one to form a plurality of vacuum pumping channels.

In order to ensure that the gap between the middle frame 30 and the display screen 10 and the gap between the middle frame 30 and the cover plate 40 are evacuated, a sealing fixture 120 is disposed outside the assembly of the display screen 10, the cover plate 40 and the middle frame 30. The sealing fixture 120 is disposed to prevent external air from entering into gaps between the middle frame 30 and the display screen 10 and the cover plate 40 through other gaps during the vacuum-pumping process.

And S143, as shown in FIGS. 17a and 17b, filling glue into the gap defined by the middle frame 30, the display screen 10 and the cover plate 40 through the glue filling channel, and simultaneously, vacuumizing the gap defined by the middle frame 30, the display screen 10 and the cover plate 40 through the vacuumizing channel so that uncured soft glue completely fills the gap defined by the middle frame 30, the display screen 10 and the cover plate 40.

Since the soft gel is not solidified at this time, it can flow in each gap. The sealing fixture 120 can also prevent the soft glue in the first gap S1 and the fourth gap S4 from overflowing the outer side of the mobile phone.

S144, as shown in fig. 18a and 18b, after standing for a predetermined time, the uncured soft glue in the gap enclosed by the middle frame 30, the display screen 10 and the cover plate 40 is cured to form the soft glue 60.

It can be understood that whether the curing is performed by heating or by normal temperature can be selected according to the type of the soft glue. And selecting the standing time according to the type of the soft glue.

S145, as shown in fig. 19a and 19b, the sealing jig 120 is removed.

After the soft glue 60 is cured, the soft glue does not flow in each gap and does not flow out through the glue filling hole 34 and the vacuum hole 35, so that the sealing jig 120 can be removed at this time.

S146, as shown in fig. 20a and 20b, a rear cover 20 is disposed on a side of the middle frame 30 facing away from the display screen 10 to form a mobile phone.

Specifically, in order to ensure that the gap surrounded by the middle frame 30, the display screen 10 and the cover plate 40 is vacuumized, the assembly of the display screen 10, the cover plate 40 and the middle frame 30 is fastened by the sealing jig 120. And because the corresponding channels are designed on the sealing jig 120 corresponding to the vacuum holes 35 and the glue filling holes 34 of the middle frame 30 to form a vacuum-pumping channel and a glue filling channel, the sealing jig 120 can pump vacuum while filling glue into the gap defined by the middle frame 30, the display screen 10 and the cover plate 40. Meanwhile, due to the uniform arrangement of the vacuumizing channel and the glue filling channel, the gaps formed by the middle frame 30, the display screen 10 and the cover plate 40, which are completely filled with the soft glue 60, are finally achieved, namely the first gap S1, the second gap S2, the third gap S3, the fourth gap S4 and the fifth gap S5. The problems of glue breaking, glue shortage and glue shortage are prevented.

The above embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and the modifications or the substitutions do not make the essence of the corresponding technical solutions depart from the scope of the technical solutions of the embodiments of the present application.

Claims (10)

1. An electronic device, comprising: the display device comprises a cover plate, a middle frame, a display screen and a rear cover;

the middle frame comprises a top surface and a bottom surface;

the display screen is arranged on the top surface; the rear cover is arranged on the bottom surface; the cover plate is positioned on one side of the display screen, which is far away from the middle frame;

in a first direction, the display screen comprises opposite display surfaces and a bottom surface; the display device further comprises a first side surface connecting the display surface and the bottom surface; the display surface is positioned on one side of the bottom surface, which is far away from the middle frame;

in the first direction, the cover plate comprises opposite outer and inner surfaces; further comprising a second side connecting the outer surface and the inner surface; the outer surface is positioned on one side of the inner surface, which faces away from the display screen;

the top surface comprises a supporting sub-surface and an inner side sub-surface positioned at the periphery of the supporting sub-surface;

the orthographic projection of the display screen on a first plane is positioned in the orthographic projection of the supporting sub-surface on the first plane, and the supporting sub-surface is used for supporting the display screen;

the inner side sub-face comprises a first inner side sub-face; the first inner sub-surface partially surrounds the support sub-surface;

the first inner sub-surface is respectively arranged opposite to the first side surface and the second side surface, and the first inner sub-surface is a plane;

the second side surface and the first inner sub-surface enclose a first gap, and the inner surface, the first side surface and the first inner sub-surface enclose a second gap; soft glue is filled in the first gap and the second gap, and the elastic modulus of the soft glue is less than or equal to 50 MPa;

wherein the first plane is a plane parallel to the back cover; the first direction is a direction perpendicular to the first plane.

2. The electronic device according to claim 1, further comprising a heat dissipation film and a first adhesive layer; the heat dissipation film is positioned between the display screen and the middle frame; the first adhesive layer is used for bonding the heat dissipation film on the middle frame;

the heat dissipation film comprises a conductive layer;

the conducting layer, the first glue layer and the support sub-surface are provided with a third gap;

the soft rubber in the second gap extends to the third gap.

3. The electronic device according to claim 1, wherein the display screen comprises a display part, a bending part and a binding part, and the binding part is bent to a side away from the display surface of the display screen through the bending part;

the inner sub-surface further comprises a second inner sub-surface; the second inner sub-surface is a plane;

along a second direction, the bending part is arranged opposite to the second inner side sub-surface;

a fourth gap is defined by the second side surface, the second inner sub-surface, the inner surface and the bent part; soft rubber is filled in the fourth gap;

wherein the second direction is a direction perpendicular to the second inner sub-surface.

4. The electronic device of claim 3, further comprising a blocking structure;

the blocking structure is located between the binding portion and the support sub-face.

5. The electronic device of claim 4, further comprising a heat dissipation film and a first glue layer, wherein the heat dissipation film is located between the display screen and the middle frame; the first adhesive layer is used for bonding the heat dissipation film on the middle frame;

the blocking structure and the first adhesive layer are arranged on the same layer.

6. The electronic device according to claim 3, wherein the gap formed by bending the bent portion is a fifth gap; and soft rubber is filled in the fifth gap.

7. The electronic device of claim 1, wherein the middle frame further comprises a plurality of glue filling holes, and the glue filling holes are used for filling the soft glue in the first gap and the second gap.

8. The electronic device of claim 7, wherein the middle frame further comprises a plurality of vacuum holes through which the first gap and the second gap are evacuated.

9. The electronic device of claim 8, wherein the glue filling hole and the vacuum hole are sequentially and uniformly spaced.

10. The electronic device of claim 1, wherein the soft gel comprises silicone.

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