CN113507813A

CN113507813A - Display terminal

Info

Publication number: CN113507813A
Application number: CN202110737933.9A
Authority: CN
Inventors: 董红卫; 宋学志; 赵永栋; 矫宝龙; 霍贵斌
Original assignee: Hisense Mobile Communications Technology Co Ltd
Current assignee: Hisense Mobile Communications Technology Co Ltd
Priority date: 2021-06-30
Filing date: 2021-06-30
Publication date: 2021-10-15
Anticipated expiration: 2041-06-30
Also published as: CN113507813B

Abstract

The invention provides a display terminal, comprising: a housing; the display screen is fixedly connected to one surface of the shell; the printed circuit board is fixedly connected to the other surface of the shell opposite to the display screen; the metal bracket is fixedly connected with the machine shell so as to coat the printed circuit board in a cavity between the machine shell and the metal bracket; the metal support is provided with a flange, the shell is provided with a groove matched with the flange, and the flange is inserted into the groove to seal the cavity. The printed circuit board is sealed in the cavity between the metal support and the shell by inserting the flange on the metal support into the groove on the shell, so that the printed circuit board and the display screen are separated by the shell, the printed circuit board and the display screen can be protected under the conditions that the display terminal falls off and the like, the damage is avoided, meanwhile, the flange on the metal support is inserted into the groove of the shell, the electromagnetic leakage can be prevented, and the installation is convenient.

Description

Display terminal

Technical Field

The invention belongs to the technical field of terminals, and particularly relates to a display terminal.

Background

Among the prior art, its printed circuit board of product with display terminal and display screen are as an organic whole for the laminating installation usually for under the condition of falling, printed circuit board can strike the display screen and lead to display problems such as white spot to appear in the display screen. Secondly, it is necessary to shield electromagnetic waves emitted from electronic devices such as chips on the printed circuit board to prevent the leakage of the electromagnetic waves from affecting the radio frequency index.

The invention is provided in view of the above.

Disclosure of Invention

The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. For this purpose,

the invention aims to provide a display terminal which can prevent a printed circuit board from impacting a display screen, protect the printed circuit board and the display screen, prevent electromagnetic leakage of the printed circuit board and prevent electromagnetic interference of radio frequency signals.

To achieve the above object, an embodiment of the present invention provides a display terminal, including: a housing; the display screen is fixedly connected to one surface of the shell; the printed circuit board is fixedly connected to the other surface of the shell opposite to the display screen; the metal bracket is fixedly connected with the machine shell so as to coat the printed circuit board in a cavity between the machine shell and the metal bracket; the metal support is provided with a flange, the shell is provided with a groove matched with the flange, and the flange is inserted into the groove to seal the cavity.

This application will be printed circuit board seals in the cavity between metal support and casing through inserting the recess on the casing with the flange on the metal support for printed circuit board and display screen are cut off by the casing, can protect printed circuit board and display screen under the circumstances such as display terminal falls, avoid impaired, and simultaneously, the recess of flange on the metal support inserted the casing can play the effect that prevents the electromagnetism and reveal, simple to operate weakens the electromagnetic effect reliably.

In addition, the display terminal according to the above embodiment of the present invention may further have the following additional technical features:

in some embodiments of the present application, the printed circuit board and the display screen are electrically connected through a flexible circuit board.

In some embodiments of the present application, the flange is disposed around an edge of the metal bracket so as to increase a spatial configuration of the cavity and seal the printed circuit board within the cavity.

In some embodiments of the present application, the metal bracket is made of an alloy, so as to improve the effect of absorbing and attenuating electromagnetic waves.

In some embodiments of the present application, the metal bracket is provided with a threaded hole, and the printed circuit board is fixedly connected to the housing through the threaded hole by a screw.

In some embodiments of the present application, the display screen is glued to the chassis.

In some embodiments of the present application, the groove is shaped as a U-shaped groove, so that the connection between the casing and the metal bracket has a zigzag path structure. When the electromagnetic wave passes through a zigzag path structure formed by the flange and the groove, the electromagnetic wave is continuously reflected and continuously absorbed and weakened by the metal bracket, and finally the leakage of the electromagnetic wave or the leaked electromagnetic wave can be prevented from being insufficient to influence the radio frequency index, so that the effect of shielding the electromagnetic wave is achieved.

In some embodiments of the application, the edge of the metal support is provided with a plurality of circles of the flange, the effect of sealing electromagnetic waves by the metal support can be further improved by the plurality of circles of the flange, and the strength of the effect of shielding the electromagnetic waves can be adjusted by controlling the preset number of circles of the flange.

In some embodiments of the present application, the casing is provided with a positioning column, and the metal support is provided with a positioning hole, and the positioning column is inserted into the positioning hole to facilitate the installation and positioning of the casing and the metal support.

Additional aspects and advantages of the invention will be set forth in part in the description which follows and, in part, will be obvious from the description, or may be learned by practice of the invention.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.

Fig. 1 is a schematic view illustrating an assembly of a metal alloy and a chassis of a display terminal according to an embodiment of the present invention;

FIG. 2 is a cross-sectional view A-A of FIG. 1;

FIG. 3 is an enlarged view of portion B of FIG. 2;

FIG. 4 is an exploded view of a metal alloy and a housing of a display terminal according to an embodiment of the present invention;

FIG. 5 is an enlarged view of portion C of FIG. 4;

fig. 6 is a schematic structural diagram of a metal alloy of a display terminal according to an embodiment of the present invention;

fig. 7 is a schematic view of a housing structure of a display terminal according to an embodiment of the present invention.

In the above figures: 1. a housing; 11. a groove; 12. a positioning column; 2. a display screen; 3. a metal bracket; 31. a flange; 32. a threaded hole; 33. and (7) positioning the holes.

Detailed Description

The invention is described in detail below by way of exemplary embodiments. It should be understood, however, that elements, structures and features of one embodiment may be beneficially incorporated in other embodiments without further recitation.

In the description of the present invention, it is to be understood that the terms "center", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.

In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.

Referring to fig. 1 to 7, an embodiment of the present invention provides a display terminal, which includes a housing 1 forming a main structure of the display terminal, a display screen 2 for displaying an image, a printed circuit board for controlling the display screen 2 to display the image, and a metal bracket 3 for protecting the printed circuit board and preventing electromagnetic leakage of the printed circuit board.

The display screen 2 is glued on one end face of the machine shell 1, and the printed circuit board is fixedly connected on the other end face of the machine shell 1 opposite to the display screen 2. The display screen 2 and the printed circuit board are separated through the casing 1, so that the damage of electronic devices on the display screen 2 and the printed circuit board caused by the fact that the printed circuit board impacts the display screen 2 under the falling condition is prevented, and the problems of white spots, bright spots, screen splash and the like on the screen are avoided.

Specifically, a plurality of threaded holes 32 are formed in the metal support 3, the screw penetrates through the threaded holes 32 to fixedly connect the metal support 3 with the machine shell 1, so that the printed circuit board is wrapped in a cavity formed between the machine shell 1 and the metal support 3, and the metal support 3 can play a role in fixing the printed circuit board and preventing electromagnetic leakage. In this embodiment, the metal bracket 3 is made of an alloy having a better electromagnetic shielding effect.

The metal bracket 3 is provided with a flange 31, the casing 1 is provided with a groove 11 matched with the flange 31, and the flange 31 is inserted into the groove 11 to seal a cavity formed between the casing 1 and the metal bracket 3. Through the cooperation of the flange 31 and the groove 11 structure, the process of dispensing and sealing is omitted, and the problem of electromagnetic wave shielding failure caused by incomplete dispensing is avoided. The flange 31 and the groove 11 are matched in structure, so that the mounting process is simplified and convenient, the cost is saved, and electromagnetic waves generated by electronic devices such as chips on a printed circuit board can be prevented from leaking to the outside of the machine shell 1.

Electronic devices such as chips on the printed circuit board can emit electromagnetic waves, and the leaked electromagnetic waves can interfere with radio frequency signals and influence radio frequency indexes. The electromagnetic wave has the characteristic of linear propagation, and the groove 11 on the machine shell 1 is shaped into a U-shaped groove, so that the joint between the machine shell 1 and the metal support 3 is of a zigzag path structure. When the electromagnetic wave passes through the zigzag path structure formed by the flange 31 and the groove 11, the electromagnetic wave is continuously absorbed and weakened by the metal bracket 3, and finally the leakage of the electromagnetic wave or the insufficient influence of the leaked electromagnetic wave on radio frequency indexes can be prevented, so that the effect of shielding the electromagnetic wave is achieved.

Be provided with reference column 12 on the casing 1, be provided with locating hole 33 on the metal support 3, insert locating hole 33 through reference column 12 and be convenient for the pre-installation and the location of casing 1 and metal support 3 to improve the installation effectiveness, after locating hole 33 and reference column 12 cooperation installation, realize closely cooperating in inserting recess 11 in the flange 31.

The printed circuit board is electrically connected with the display screen 2 through two large flexible circuit boards, and the arrangement that a plurality of small flexible circuit boards are adopted in the past is changed, so that the installation is more convenient.

The metal bracket 3 is provided with a threaded hole 32, and the metal bracket 3 is fixedly connected to the printed circuit board through the threaded hole 32 by a screw. The flange 31 is arranged in a surrounding structure around the edge of the metal bracket 3, so as to prevent electromagnetic waves from leaking out without passing through the flange 31 and groove 11 structure. Furthermore, the edge of the metal support 3 is provided with a plurality of circles of flanges 31, the plurality of circles of flanges 31 can further improve the electromagnetic wave sealing effect of the metal support 3, and the strength of the electromagnetic wave shielding effect can be adjusted by controlling the preset number of circles of the flanges 31.

In the embodiment, the metal bracket 3 is coated on the outer side of the printed circuit board, so that a traditional shielding film and shielding case structure for shielding electromagnetic waves generated by the printed circuit board are omitted, and the cost is saved. Meanwhile, the metal bracket 3 can protect and fix the printed circuit board, so that the printed circuit board cannot impact the display screen 2 when falling, electronic devices on the display screen 2 and the printed circuit board are prevented from being damaged due to the fact that the printed circuit board impacts the display screen 2 under the condition of falling, and the problems of white spots, bright spots, screen splash and the like of the screen are avoided.

The above description is only for the specific embodiments of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art can easily conceive of the changes or substitutions within the technical scope of the present invention, and the changes or substitutions should be covered within the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.

Claims

1. A display terminal, comprising:

a housing;

the display screen is fixedly connected to one surface of the shell;

the printed circuit board is fixedly connected to the other surface of the shell opposite to the display screen; and

the metal bracket is fixedly connected with the shell so as to coat the printed circuit board in a cavity between the shell and the metal bracket;

the metal support is provided with a flange, the shell is provided with a groove matched with the flange, and the flange is inserted into the groove to seal the cavity.

2. The display terminal of claim 1,

the printed circuit board is electrically connected with the display screen through the flexible circuit board.

3. The display terminal of claim 1,

the flange is disposed around an edge of the metal bracket.

4. The display terminal of claim 1,

the metal bracket is made of alloy.

5. The display terminal of claim 1,

the metal support is provided with a threaded hole, and the printed circuit board is fixedly connected to the shell through a screw passing through the threaded hole.

6. The display terminal of claim 1,

the display screen is glued on the shell.

7. The display terminal of claim 1,

the groove is in a U-shaped groove shape.

8. The display terminal of claim 1,

the edge of the metal bracket is provided with a plurality of circles of the flanges.

9. The display terminal of claim 1,

the casing is provided with a positioning column, the metal support is provided with a positioning hole, and the positioning column is inserted into the positioning hole.