CN212909604U

CN212909604U - Display device

Info

Publication number: CN212909604U
Application number: CN202021572399.8U
Authority: CN
Inventors: 尹浩发; 许多
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2020-07-31
Filing date: 2020-07-31
Publication date: 2021-04-06
Anticipated expiration: 2030-07-31

Abstract

The present disclosure relates to a display device including: the display panel comprises a middle frame, a display panel and a transparent cover plate, wherein the edge of the middle frame protrudes upwards to form a side wall, and protrudes inwards to form a boss, and the boss supports the transparent cover plate; the display panel is positioned below the transparent cover plate; the transparent cover plate is fixedly bonded with the side wall through an adhesive. The plastic frame is omitted in the display device, the size of the frame of the display device is reduced, and the narrow frame effect is improved. In addition, the side face of the transparent cover plate is connected with the side wall of the middle frame through the adhesive, so that the width of an adhesive layer formed by the adhesive between the bottom face of the transparent cover plate and the boss can be reduced, and the narrow frame effect of the display device is further improved.

Description

Display device

Technical Field

The present disclosure relates to the field of machines, and more particularly, to a display device.

Background

With the development of intelligent terminals, large screen terminals and full screen terminals appear. For example, the terminal is taken as a mobile phone, a glass cover plate of the mobile phone is installed on the middle frame, when the mobile phone is dropped and other unexpected conditions occur, the glass cover plate is easy to break, and particularly, the joint of the glass cover plate and the middle frame is easy to break due to stress concentration at the joint of the glass cover plate and the middle frame.

SUMMERY OF THE UTILITY MODEL

The present disclosure provides a display apparatus.

A display device according to an embodiment of the present disclosure includes: the display device comprises a middle frame, a display panel and a transparent cover plate;

the edge of the middle frame protrudes upwards to form a side wall and protrudes inwards to form a boss, and the boss supports the transparent cover plate;

the display panel is positioned below the transparent cover plate;

the transparent cover plate is fixedly bonded with the side wall through an adhesive.

In some embodiments, the transparent cover plate is adhesively secured to the boss by an adhesive.

In some embodiments, the adhesive layer formed by the adhesive is L-shaped.

In some embodiments, the top end of the side wall protrudes to the central position of the middle frame to form a flange; the flange at least partially shields the adhesive.

In some embodiments, the sidewall is recessed away from a central location of the bezel to form a recess having the adhesive therein.

In some embodiments, the adhesive is formed on the sidewall of the middle frame and the boss by a dispensing process.

In some embodiments, the middle frame comprises: long and short sides;

the side walls of the two short sides of the middle frame and the transparent cover plate are not provided with the adhesive;

in some embodiments, the adhesive is provided between the side walls of the two long sides of the middle frame and the transparent cover plate.

In some embodiments, the long side and the short side are bent at the junction to form a chamfer;

the adhesive is arranged between the side wall at the chamfer of the middle frame and the transparent cover plate.

In some embodiments, the gap between the transparent cover plate and the middle frame is an assembly gap.

In some embodiments, the transparent cover plate is bonded to the display surface of the display panel by an adhesive.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects:

according to the embodiment, the plastic frame is omitted in the display device, the frame size of the display device is reduced, and the narrow frame effect is improved. Moreover, the side face of the transparent cover plate is fixedly bonded with the side wall of the middle frame through an adhesive, the transparent cover plate does not need to be supported only by a boss, the contact width between the bottom face of the transparent cover plate and the boss can be reduced, and the narrow frame effect of the display device is further improved. Moreover, the adhesive between the side walls of the transparent cover plate and the middle frame can also buffer external force applied to the transparent cover plate, so that the breakage of the transparent cover plate caused by stress concentration at the contact part of the transparent cover plate and the middle frame is reduced, and the protection effect on the transparent cover plate is effectively improved.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

FIG. 1 is a partial schematic view of a display device;

FIG. 2 is a second schematic view of a partial structure of a display device;

FIG. 3 is one of the exploded views of a partial structure of a display device shown in accordance with an exemplary embodiment;

FIG. 4 is an exploded view of a second portion of a display device according to an exemplary embodiment;

FIG. 5 is one of the partial schematic structural diagrams of a display device according to an exemplary embodiment;

FIG. 6 is a second schematic diagram illustrating a partial structure of a display device according to an exemplary embodiment;

FIG. 7 is a schematic diagram illustrating the location of an adhesive on a bezel in a display device according to an exemplary embodiment;

FIG. 8 is one of the schematic structural diagrams between a display device and a dispenser nozzle shown in accordance with an exemplary embodiment;

FIG. 9 is a second schematic diagram of a structure between a display device and a dispenser nozzle shown in accordance with an exemplary embodiment;

FIG. 10 is a third schematic diagram illustrating a configuration between a display device and a dispenser nozzle in accordance with an exemplary embodiment;

FIG. 11 is a fourth illustration of a structure between a display device and a dispenser nozzle, shown in accordance with an exemplary embodiment;

fig. 12 is a fifth schematic view of a structure between a display device and a dispenser nozzle shown according to an exemplary embodiment.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of devices consistent with certain aspects of the present disclosure, as detailed in the appended claims.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings.

As shown in fig. 1, the glass cover plate 11 is located in the middle frame 12, and the middle frame 12 has poor protection to the glass cover plate 11, so that the glass cover plate 11 is easily broken when the display device is dropped or other unexpected conditions occur. As shown in fig. 2, by arranging the plastic frame 22, the plastic frame 22 is assembled at the bottom of the middle frame 23, and the glass cover plate 21 and the display panel 24 are both mounted on the plastic frame 22, so that the protection of the glass cover plate 21 is improved, but the frame of the display device is large, the frame effect is obvious in appearance, and the user experience is reduced. In order to further improve the protection effect to the glass apron, further propose the technical scheme of this disclosure.

An embodiment of the present disclosure provides a display device, including: a middle frame 110, a display panel 130 and a transparent cover plate 120;

the edge of the middle frame 110 protrudes upwards to form a side wall 111 and protrudes inwards to form a boss 112, and the boss 112 supports the transparent cover plate 120;

the display panel 130 is located below the transparent cover plate 120;

the transparent cover 120 is adhesively secured to the side wall 111 by an adhesive.

As shown in fig. 5, the frame size a of the display device refers to: the width from the boundary between the black border region (i.e., the region indicated by a in fig. 5) of the display panel 130 and the display region (i.e., the region indicated by AA in fig. 5) in the black border region to the boundary of the transparent cover 120. Generally, the smaller the bezel size a, the higher the display device screen area ratio (the ratio of the area of the display panel 130 to the area of the front panel of the display device), the smaller the bezel feel, and the better the narrow bezel effect. On the contrary, the larger the frame size A is, the smaller the screen area ratio of the display device is, the higher the frame sensing area ratio is, and the worse the narrow frame effect is.

In a specific example, as shown in fig. 7, the middle frame 110 includes a bottom surface 115 and an edge 119 protruding upward along the peripheral side of the bottom surface 119, the edge 119 of the middle frame 110 protrudes toward the center of the middle frame 110 to form a boss 112, and protrudes upward to form a side wall 111; the edge 119 and the bottom surface 115 define a space for placing the display panel 130 and the transparent cover plate 120.

Compared with the display device similar to that shown in fig. 2, the display device eliminates the plastic frame, and reduces the size of the frame of the display device. And the adhesive is also arranged between the side surface of the transparent cover plate 120 and the side wall 111 of the middle frame 110, the transparent cover plate 120 does not need to be supported only by the boss 112, the contact width C between the bottom surface of the transparent cover plate 120 and the boss 112 can be reduced, and the narrow frame effect of the display device is further improved. Moreover, by installing the transparent cover 120 at the edge 119 of the middle frame 110, the space in the middle frame 110 occupied by the installation position of the transparent cover 120 is reduced, the installation space of the display panel 130 in the middle frame 110 is further increased, the frame size a of the display device is reduced, and the narrow frame effect is improved.

Adhesives include, but are not limited to, acrylic polymer glues or epoxy glue.

The material of the middle frame 110 includes, but is not limited to, one or a combination of two or more of metal or ceramic.

The transparent cover 120 is located at the outermost side of the display panel 130, and has a protective effect on the display panel 130 below, and the transparent cover 120 may be made of a material with good light transmittance, so that an image displayed on the display panel 130 can be observed through the transparent cover 120. The transparent cover 120 is, for example, a glass cover or an acrylic plastic cover.

In some embodiments, the transparent cover plate 120 is adhesively secured to the boss 112 by an adhesive.

The transparent cover plate 120 has an adhesive not only with the side wall 111 of the middle frame 110 but also with the boss 112. As shown in fig. 5, after the side surface of the transparent cover plate 120 and the side wall 111 of the middle frame 110 are adhered and fixed, the width of the adhesive layer 140 formed by the adhesive between the bottom surface of the transparent cover plate 120 and the boss 112, that is, the contact width C between the bottom surface of the transparent cover plate 120 and the boss 112, is reduced.

In a specific example, as shown in fig. 5, the side surface of the transparent cover plate 120 and the side wall 111 of the middle frame 110 are fixed by adhesive bonding, and the width C of the adhesive layer 140 formed by the adhesive between the bottom surface of the transparent cover plate 120 and the boss 112 can be reduced to 0.15-0.3 mm. The size A of the frame of the display device can be reduced to 1.3-1.5 mm, and even smaller. In the display device shown in fig. 2, the minimum frame size is also 1.7-1.9 mm.

Compared with the display device similar to that shown in fig. 1, the side and the bottom of the contact part of the transparent cover plate 120 and the middle frame 110 of the present disclosure are bonded by the adhesive, the adhesive is not only located between the bottom of the transparent cover plate 120 and the boss 112 of the middle frame 110, but also located between the side of the transparent cover plate 120 and the side wall 111 of the middle frame 110, the adhesive layer 140 formed by the adhesive can buffer the external force applied to the transparent cover plate 120, reduce the breakage of the transparent cover plate 120 caused by the stress concentration of the contact part of the transparent cover plate 120 and the middle frame 110, and improve the protection effect of the transparent cover plate.

In other alternative embodiments, the adhesive layer 140 formed of an adhesive is L-shaped.

The adhesive layer 140 refers to a layered structure formed after the adhesive is cured, and fig. 5 exemplarily shows the adhesive layer 140 in an L-shape. The adhesive layer 140 having such a shape can ensure that both the side and bottom surfaces of the transparent cover plate 120 are adhesively fixed. In other alternative embodiments, the top end of the sidewall 111, protruding toward the center of the middle frame 110, forms a flange 114; a flange 114 at least partially covering the adhesive.

The flange 114 has a masking effect on the adhesive, making it as hidden as possible, reducing flash during dispensing.

In addition, the top end of the side wall 111 of the middle frame 110 may not be provided with the flange 114, for example, the structure of the middle frame 110 without the flange 114 may be the same as the structure of the base frame 300 shown in fig. 3.

In other alternative embodiments, sidewall 111 is recessed away from the center of bezel 110 to form a recess 113, with adhesive in recess 113.

As shown in fig. 5, the sidewall 111 is located above the boss 112, and the groove 113 is beneficial to increasing the thickness of the adhesive layer 140 on the side surface of the transparent cover plate 120, reducing the impact extrusion force of the display device on the side surface of the transparent cover plate 120 due to unexpected conditions such as falling, further improving the fixing effect and the protection effect on the transparent cover plate 120, and reducing the risk of breaking the transparent cover plate 120.

In a specific example, when the middle frame 110 is made of a base frame, the base frame may be partially trimmed by notching the sidewall 111 of the base frame above the boss 112, so as to form the middle frame 110 with a flange 114. The base frame 300 may specifically adopt the structure shown in fig. 3.

It will be appreciated that when the groove 113 is formed by slotting, and the width of the groove 113 in the vertical direction is smaller than the height of the side wall 111, a part of the structure, namely the flange 114, is reserved on the top of the side wall 111. The flange 114 is provided to hide the adhesive as much as possible within the groove 113.

In other alternative embodiments, the cross-section of the edge of the middle frame 110 is stepped downward from the edge to the center of the middle frame 110.

Fig. 3 to 5 exemplarily show that the cross-sectional shape is a shape formed by combining an L-shape and an I-shape from top to bottom end to end. Those skilled in the art can design other shapes of the rim 110 as desired.

In the embodiment of the present disclosure, the adhesive 170 may be formed on the sidewall 111 of the middle frame 110 through a dispensing process.

As shown in fig. 6, when the transparent cover plate 120 is placed on the boss 112 by dispensing on the sidewall 111 of the middle frame 110 by a dispenser, the adhesive on the sidewall 111 of the middle frame 110 flows onto the boss 112 under the gravity of the adhesive 170 and the extrusion of the transparent cover plate 120, and the adhesive is also present between the bottom of the transparent cover plate 120 and the boss 112.

In other alternative embodiments, the adhesive may also be formed on the sidewall 111 of the middle frame 110, and the boss 112, through a dispensing process.

In a specific example, adhesive is added on the boss 112 and the sidewall 111 along the peripheral side of the middle frame 110 by a dispensing process.

In another specific example, along the peripheral side of the middle frame 110, the middle frame 110 is divided into a first portion and a second portion, wherein the first portion has adhesive added only on the bosses 112, and no adhesive is on the side walls 111; the second portion has adhesive applied only to the side wall 111 and no adhesive on the boss 112. Generally, four-axis dispensing machine or five-axis dispensing machine is needed to dispense on the side wall 111, the dispensing difficulty of the side wall 113 is high, and only the adhesive is added on the side wall 111 of the second part of the middle frame 110, which is beneficial to reducing the operation difficulty and reducing the production cost.

In other alternative embodiments, middle frame 110 includes: long side 116 and short side 117;

between the side walls 111 of the two short edges 117 of the middle frame 110 and the transparent cover plate 120, there is no adhesive;

the side walls 111 of the two long sides 116 of the middle frame 110 and the transparent cover plate 120 have an adhesive therebetween.

As shown in fig. 6 to 12, in the case of dispensing using a mobile phone as a specific example, an adhesive is applied only to the sidewalls 111 of the two long sides 116, and an adhesive is applied to the bosses 112 of the two short sides 117. After the transparent cover plate 120 is installed, the adhesive layer 140 is formed on the sidewalls 111 and the bosses 112 of the two long sides 116 by the pressing of the transparent cover plate 120, and the adhesive layer 140 is formed only on the bosses 112 of the two short sides 117. In practical application, the two short edges 117 correspond to the top and the bottom of the mobile phone respectively, the two long edges 116 correspond to the left and the right sides of the mobile phone respectively, the visual effect of the narrow frame of the mobile phone is more influenced by the left and the right long edges 116, and the influence effect by the two short edges 117 is smaller. Through the arrangement of the adhesive tracks of the long side 116 and the short side 117, the dispensing difficulty can be reduced and the production cost can be reduced on the basis of improving the narrow frame effect.

In other alternative embodiments, the long side 116 and the short side 117 are bent at the junction to form a chamfer;

the side wall 111 at the chamfered corner 118 of the middle frame 110 and the transparent cover plate 120 have an adhesive therebetween.

As shown in fig. 6 to 12, a sharp edge at a turn between the long side 116 and the short side 117 of the middle frame 110 can be removed by chamfering. The chamfer may be, without limitation, a rounded corner. When dispensing, the dispensing effect of the chamfer 118 can be consistent with that of the long edge 116, namely: the adhesive is only added to the sidewall 111 of the chamfer 118, and after being pressed by the transparent cover plate 120, the adhesive layer 140 is formed on both the sidewall 111 and the boss 112 at the chamfer.

It is understood that, during the actual dispensing operation, the adhesive may be simultaneously applied to the side wall 111 of the long side 116 of the middle frame 110 and the boss 112, or simultaneously applied to the side wall 111 of the chamfer 118 of the middle frame 110 and the boss 112.

In other alternative embodiments, the gap between the transparent cover 120 and the middle frame 110 is an assembly gap.

As shown in fig. 5, when the transparent cover 120 and the middle frame 110 are assembled, only the assembly gap B is formed between the transparent cover 120 and the middle frame 110, and the assembly gap B is generally smaller, so that the risk that the adhesive on the inner side leaks out toward the outer surface of the display device is reduced, and the firmness of bonding the transparent cover 120 is effectively ensured.

The fitting clearance B is, without limitation, 0.05 to 0.1 mm.

Optionally, the display panel 130 of the embodiment of the disclosure may be a passive light emitting display panel, or may be an active light emitting display panel. In the case of a passive light emitting Display panel, the passive light emitting Display panel refers to a Liquid Crystal Display (LCD) technology, the LCD panel cannot emit light, and the Display device further needs to arrange a backlight assembly including a light source inside the middle frame 110, and the light source of the backlight assembly provides light to realize the light emission of the Display panel 130. If the display panel is an active light Emitting display panel, the active light Emitting mode refers to a light Emitting mode using an organic light-Emitting Diode (OLED) technology, that is, the display panel 130 is formed by a light Emitting Diode array, and each display unit of the OLED can be controlled to generate light of three different colors.

In other alternative embodiments, the transparent cover 120 is bonded to the display surface of the display panel 130 by an adhesive.

As shown in fig. 4 and 5, the transparent cover 120 covers the display panel 130, and the display panel 130 may be directly fixed inside the transparent cover 120, for example, the display panel 130 is fixed on the display panel 130 by adhesive bonding. The display panel 130 does not need to be fixed by the plastic frame or the middle frame 110, and the installation of the display panel 130 is more favorable for the installation of the narrow black border area display panel 130. The edge of the display panel 130 and the middle frame 110 have a safety gap D therebetween, the safety gap D is a space reserved for the expansion of the display panel 130 due to the temperature rise, and the size of the safety gap D may be 0.2-0.5 mm, for example, 0.2mm, 0.3mm, 0.35mm, or 0.5 mm. Compared with the display device shown in fig. 1 and 2, the safety gap is kept constant, the structure shown in fig. 3 to 5 is more favorable for the installation of the display panel 130 with the narrow black border area, and the display panel 130 with the narrow black border area can further reduce the size of the frame of the display device.

The embodiments of the present disclosure are further explained below by respectively taking the specific example of the present disclosure shown in fig. 5 as a comparison with a display device of a similar structure shown in fig. 2.

A display device of a similar structure as shown in fig. 2 was taken as a comparative example, and a structure as shown in fig. 5 was taken as an example. The side dispensing process technology is realized by using a four-axis dispenser or a five-axis dispenser, so that the side surface of the transparent cover plate 120 is glued with the side wall 111 of the middle frame 110, provided that the side surface of the transparent cover plate 120 is not provided with an anti-fingerprint coating (AF coating), thereby reducing the dispensing width of the bottom surface of the glass cover plate in the comparison example and narrowing the size of the frame 'A' of the display device. If the OLED hard screen is adopted in the example scheme, the size of the frame can be 1.4mm, and mass production is possible.

Further, the flange 114 is formed using a ring of local relief (i.e., machined undercut) at the edge of the middle frame 110. The circle of the edge of the middle frame 110 means that four edges of the middle frame 110 are added with four corners, or only the edge of two long edges 116 on the left side and the right side of the middle frame 110 are added with four corner chamfers 118 for local material reduction. The material reducing mode has the advantages that the thickness of the adhesive on the side wall 111 is increased, the wettability and the adhesive force of the adhesive on the edge of the transparent cover plate 120 are increased, the drop impact resistance after the middle frame 110 is bonded with the transparent cover plate 120 is improved, the area of the side wall 111 of the middle frame 110 is reduced, and therefore the impact extrusion force on the side surface of the transparent cover plate 120 in the dropping process is reduced. In a word, the transparent cover plate 120 is well protected under the unexpected conditions of falling and the like, and the user experience is improved.

In the dispensing process of the four-axis dispensing machine in the present disclosure, as shown in fig. 6, the two long sides 116 and the chamfer 118 of the middle frame 110 are dispensed by side dispensing, i.e., dispensing is performed on the sidewalls 111 of the two long sides 116 and the chamfer 118. And the two short edges 117 are dispensed from the front, i.e. on the bosses 112 of the two short edges 117. During the dispensing process, the nozzle 200 and the middle frame 110 are rotated from left to right to the horizontal position of the middle frame 110, and the relative positions of the nozzle and the middle frame 110 are shown in fig. 8. Continuing in the left-to-right rotation, the relative positions of the nozzle 200 and the bezel 110 are shown with reference to FIG. 9. When the left rotation reaches about 50 °, dispensing starts on the boss 112 of the short side 117 of the middle frame 110 as shown in fig. 10. When the middle frame 110 is rotated to about 45 ° by right-hand rotation, the relative positional relationship between the nozzle 200 and the middle frame 110 is shown in fig. 11. When the right rotation is about 50 °, the middle frame 110 is stationary, and the nozzle 200 finishes dispensing on the left corner and the sidewall 111 of the long side 116 as shown in fig. 12. The above rotations are all along the Y-axis (i.e., the length of the phone). Therefore, the middle frame 110 is rotated left and right along the Y-axis by the four-axis dispenser, and the dispensing process of dispensing the adhesive on the side wall 111 at the left and right sides and four corners of the middle frame 110 is completed. The adhesive traces 160 formed by dispensing are shown in fig. 7 as black lines on the edge 119 of the middle frame 110. When the assembly is carried out, the display panel 130 can be assembled from top to bottom by using a screen assembling machine, the transparent cover plate 120 extrudes a part of the adhesive on the side wall 111 of the middle frame 110 to fill the part of the adhesive on the design position of the boss 112, and the process can realize that the side surface and the bottom surface of the transparent cover plate 120 can have the adhesion effect, so that the adhesion width of the bottom surface of the glass cover plate in the comparative example can be reduced.

For a comparative and exemplary comparative dimensional comparison and brief description, see table 1, wherein the relevant dimensional units in table 1 are in mm.

TABLE 1 comparative and exemplary comparative size comparisons and brief description

Therefore, the display device is visually visible in appearance, and under the starting-up condition, the frame width of the display panel 130 is narrower than that of an equivalent product, so that the visual experience is better. Moreover, the side surface of the side wall 111 of the transparent cover plate 120 is fully utilized to glue, so that the anti-falling performance of the transparent cover plate 120 for protecting the display panel 130 is improved, and compared with a five-axis dispensing machine, the four-axis dispensing machine has lower cost by adopting a dispensing process.

In the embodiment of the present disclosure, the display device may be a consumer mobile electronic product with a display panel 130, such as a tablet computer, a mobile phone, or a notebook computer. It may also be a fixed terminal, for example: televisions, desktop computers, etc. Alternatively, the display device can be extended to similar products in the fields of automobiles and medical treatment. For example: control screens used in the automotive field, or detectors in the medical field.

In a specific example, the display device is a mobile phone, the mobile phone further includes a rear case and a battery, the transparent cover 120 is located on the front surface of the middle frame 110, the display panel 130 is an active light emitting display panel, and the display panel 130 is located in a space between the transparent cover 120 and the front surface of the middle frame 110. The rear case is mounted on the rear surface of the middle frame 110, and a battery is disposed in a space between the rear case and the rear surface of the middle frame 110, and the battery is connected to the display panel 130 to supply power to the display panel 130.

Features disclosed in several of the product embodiments provided in the present application may be combined in any combination to yield new product embodiments without conflict.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This disclosure is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A display device, comprising: the display device comprises a middle frame, a display panel and a transparent cover plate;

the edge of the middle frame protrudes upwards to form a side wall, and protrudes inwards to form a boss, and the boss supports the transparent cover plate;

the display panel is positioned below the transparent cover plate;

2. The display device of claim 1, wherein the transparent cover plate is adhesively secured to the boss by an adhesive.

3. The display device according to claim 2, wherein the adhesive layer formed of the adhesive has an L-shape.

4. The display device according to claim 1, wherein a top end of the side wall protrudes toward a center of the middle frame to form a flange; the flange at least partially shields the adhesive.

5. The display device of claim 4, wherein the sidewalls are recessed away from a center of the bezel to form a groove having the adhesive therein.

6. The device of claim 1, wherein the adhesive is formed on the sidewall of the middle frame and the boss by a dispensing process.

7. The display device according to claim 1 or 6, wherein the middle frame includes: long and short sides;

the adhesive is arranged between the side walls of the two long edges of the middle frame and the transparent cover plate.

8. The display device according to claim 7, wherein the long side and the short side are bent at a junction to form a chamfer;

9. The display device of claim 1, wherein the gap between the transparent cover plate and the middle frame is an assembly gap.

10. The display device according to claim 1, wherein the transparent cover plate is bonded to the display surface of the display panel by an adhesive.