CN215010810U

CN215010810U - Circuit board and electronic equipment

Info

Publication number: CN215010810U
Application number: CN202120384676.0U
Authority: CN
Inventors: 种乔威
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2021-02-19
Filing date: 2021-02-19
Publication date: 2021-12-03
Anticipated expiration: 2031-02-19

Abstract

The application discloses a circuit board and an electronic device. The circuit board comprises a main body part and an extension part formed by extending outwards from the edge of the main body part, and the thickness of the extension part is smaller than that of the main body part. The electronic equipment comprises an equipment middle frame and a circuit board; the circuit board is located inside the device midframe. The light and thin design of the electronic equipment is facilitated.

Description

Circuit board and electronic equipment

Technical Field

The present disclosure relates to electronic devices, and particularly to a circuit board and an electronic device.

Background

In the existing electronic device, especially the electronic device with the flexible curved display panel, the circuit board included in the electronic device needs to integrate the circuit with the touch control function and the circuit with the display control function, which has a large volume and occupies a large space, so that the electronic device is not favorable for the light and thin design.

SUMMERY OF THE UTILITY MODEL

The application provides a circuit board and an electronic device, which are beneficial to the light and thin design of the electronic device.

According to a first aspect of the present application, a circuit board is provided, which includes a main body portion and an extension portion extending outward from an edge of the main body portion.

Optionally, the circuit board includes a plurality of circuit boards stacked in a thickness direction, and the plurality of circuit boards include a first circuit board and a second circuit board, and the size of the first circuit board is larger than that of the second circuit board;

the first circuit layer board comprises a first part and a second part, the size of the first part is the same as that of the second circuit layer board, and the projection of the first part and the projection of the second circuit layer board are coincident along the thickness direction; the first portion of the first circuit layer board and the second circuit layer board serve as the main body portion; the second portion of the first circuit layer board serves as an extension.

Optionally, the number of the first circuit boards is less than or equal to 3.

Optionally, the extension has a component in both the thickness direction and the first direction;

the first direction is perpendicular to the thickness direction.

According to a second aspect of the present application, there is provided an electronic device comprising the above-mentioned circuit board of the device middle frame; the circuit board is located inside the device midframe.

Optionally, at least part of the device middle frame encloses a battery accommodating cavity for accommodating a battery of the electronic device;

at least part of the projection of the extension part and the projection of the battery accommodating cavity are overlapped along the thickness direction of the electronic equipment;

the thickness direction of the circuit board is parallel to the thickness direction of the electronic device.

Optionally, the electronic device further includes a display panel;

at least a portion of the extension portion is disposed between the battery receiving cavity and the display panel in the thickness direction.

Optionally, the display panel includes a display portion, a connecting portion and a bending portion, the connecting portion is used for connecting the display portion and the bending portion, and along the thickness direction, the projection of the bending portion falls into the display portion.

Optionally, the electronic device further includes a display module chip, and the display module chip is fixed to one side of the bending portion, which is far away from the display portion.

Optionally, the circuit board further includes a pin, the pin is fixed to the bending portion, and the pin is electrically connected to the display panel and/or the display module chip of the electronic device.

Optionally, the electronic device further includes an auxiliary material layer, and the auxiliary material layer is fixed between the display portion and the bending portion.

Optionally, the device middle frame includes a raised boss, and the raised boss encloses the battery accommodating cavity;

the main body part of the circuit board and the side wall of the bulge part are arranged at intervals.

Optionally, a minimum value of a distance between the main body portion and the side wall is greater than or equal to 0.8mm, and is less than or equal to 1 mm.

The technical scheme provided by the application can comprise the following beneficial effects:

in the arrangement, the circuit board is divided into two parts, and the thickness of the extension part is smaller, so that the upper side and the lower side of the extension part are provided with spaces for accommodating other electronic equipment; or, also can buckle the extension to set up the at least part of extension in the top of battery, reduce the space that the circuit board occupy, through the space among the rational utilization electronic equipment, thereby be favorable to electronic equipment's frivolous design.

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

Drawings

Fig. 1 is a schematic cross-sectional structure diagram of an electronic device according to an embodiment of the present application.

Fig. 2 is a schematic plan view of a circuit board according to an embodiment of the present application.

Fig. 3 is a schematic plan view of an electronic device according to another embodiment of the present application.

Description of the reference numerals

Electronic device 10

Circuit board 100

Main body 110

Extension 120

First circuit layer board 130

First part 131

Second portion 132

Second circuit layer board 140

Pin 150

Display panel 200

Display unit 210

Connecting part 220

A bent portion 230

Equipment middle frame 300

Battery receiving cavity 301

Convex part 310

First frame portion 311

Second frame portion 312

The auxiliary material layer 400

First auxiliary material portion 410

Second raised portion 420

Cover plate layer 500

Battery 600

Display module chip 700

Thickness direction H

First direction X

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 manner in which the following exemplary embodiments are described does not represent all manner of consistency with the present application. Rather, they are merely examples of apparatus consistent with certain aspects of the present application, as detailed in the appended claims.

The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. Unless otherwise defined, technical or scientific terms used herein shall have the ordinary meaning as understood by those of ordinary skill in the art to which this application belongs. The use of "first," "second," and similar terms in the description and in the claims does not indicate any order, quantity, or importance, but rather is used to distinguish one element from another. Similarly, the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one, and if only "a" or "an" is denoted individually. "plurality" or "a number" means two or more. Unless otherwise indicated, "front", "rear", "lower" and/or "upper" and the like are for convenience of description and are not limited to one position or one spatial orientation. The word "comprising" or "comprises", and the like, means that the element or item listed as preceding "comprising" or "includes" covers the element or item listed as following "comprising" or "includes" and its equivalents, and does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. As used in this specification and the appended claims, the singular forms "a", "an", and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It should also be understood that the term "and/or" as used herein refers to and encompasses any and all possible combinations of one or more of the associated listed items.

The embodiments of the present application will be described in detail below with reference to the accompanying drawings. Features in the embodiments described below may be combined with each other without conflict.

The present application relates to an electronic device including a display panel for performing intelligent display. In this embodiment, the electronic device is a mobile phone. Of course, in other embodiments, the electronic device may also be other devices with an intelligent display function, such as: computers, tablets, e-books, watches, headsets, etc.

As shown in fig. 1, the electronic device 10 further includes a circuit board 100. The circuit board 100 may control a display function and a touch function of the display panel 200. The circuit board 100 includes a main body 110 and an extension 120 extending from an edge of the main body 110. The thickness of the extension portion 120 is smaller than that of the body portion 110.

As shown in fig. 2 and 3, if necessary, in the above arrangement, the circuit board 100 is divided into two parts, and the thickness d1 of the extension part 120 is smaller than the thickness d2 of the main body part 110, so that the upper and lower sides of the extension part 120 have spaces for accommodating other electronic devices 10 (see fig. 2). Alternatively, the extension portion 120 may be bent, and at least a portion of the extension portion 120 is disposed above the battery 600 of the electronic device 10, so as to reduce the space occupied by the circuit board 100, and to facilitate the light and thin design of the electronic device 10 by reasonably utilizing the space in the electronic device 10 (see fig. 1 and 3).

Since the circuit board 100 needs to have both the circuit for controlling the touch function and the circuit for controlling the display function, a plurality of circuit boards with different traces need to be bonded and laminated to form the circuit board 100. As shown in fig. 2 and 3, in the present embodiment, the circuit board 100 includes a plurality of circuit boards stacked in a thickness direction H of the circuit board 100, the plurality of circuit boards includes a first circuit board 130 and a second circuit board 140, and the first circuit board 130 is larger in size than the second circuit board 140.

The first circuit board 130 includes a first portion 131 and a second portion 132, and the first portion 131 has the same size as the second circuit board 140. And, the projections of the first portion 131 and the second circuit board 140 coincide along the thickness direction H. The first portion 131 of the first circuit layer board 130 and the second circuit layer board 140 serve as the body portion 110. The second portion 132 of the first circuit board panel 130 serves as the extension 120.

The number of circuit boards of the general circuit board 100 is 6 layers and more than 6 layers, and for the convenience of installation, all the circuit boards in the circuit board 100 have the same size, and form a regular rectangular structure after bonding and pressing. At this time, the rectangular structure is large in size. Which is not conducive to situational design of the electronic device 10.

In this embodiment, the circuit layer board with compressible space is dimensionally compressed and used to form the second circuit layer board 140. The routing is dense enough that a circuit board whose size and routing cannot be compressed is used as the first circuit board 130. The first circuit board panel 130 is larger in size than the second circuit board panel 140, and the second portion 132 of the first circuit board panel 130 forms the extension 120 of the circuit board 100.

At this time, as the size of the second circuit board 140 is reduced, the volume of the interior of the electronic apparatus 10 occupied by the circuit board 100 is reduced. Other electronic devices 10 may be disposed above or below the second portion 132 of the first circuit board 130 to make reasonable use of the space inside the electronic device 10, thereby facilitating the light and thin configuration of the electronic device 10 (see fig. 2). Alternatively, the second portion 132 (i.e., the extension 120) of the first circuit board 130 may be bent, so that the second portion 132 can be adapted to an opposite space to reasonably utilize the internal space of the electronic device 10 (see fig. 3).

It should be noted that the first circuit board 130 can be used as a bottom structure of the circuit board 100, that is, the first circuit board 130 is disposed below the second circuit board 140. Alternatively, the first circuit board 130 may be used as a top structure of the circuit board 100, i.e., the first circuit board 130 is disposed above the second circuit board 140. Alternatively, the first circuit board 130 may be used as a middle structure of the circuit board 100, that is, the first circuit board 130 is sandwiched between the plurality of second circuit boards 140.

Further, the number of the first circuit boards 130 is less than or equal to 3. A large number of experiments show that when the number of the first circuit boards 130 stacked together is less than or equal to 3, the second portions 132 of the first circuit boards 130 (i.e., the extension portions 120) can be bent and deformed under stress, and no breakage occurs, so that the extension portions 120 can be bent to form a shape adapted to the opposite space, and the space can be reasonably utilized.

As shown in fig. 3, in the present embodiment, the extension portion 120 has a component in both the thickness direction H and the first direction X, which can generate bending deformation to fit into the anisotropic space. The first direction X is perpendicular to the thickness direction H.

As shown in fig. 1, the electronic device 10 further includes a device middle frame 300, an auxiliary material layer 400, a cover plate layer 500, a battery 600, and a display module chip 700.

The device middle frame 300 can support and protect other electronic components inside the electronic device 10. The display panel 200 and the circuit board 100 are both located inside the device middle frame 300, the cover plate layer 500 is fixed to the device middle frame 300, and the cover plate layer 500 is disposed above the display panel 200 to protect the display panel 200.

In the present embodiment, the device middle frame 300 includes a protruding portion 310 protruding in a direction close to the display panel 200, and the protruding portion 310 encloses the battery receiving cavity 301. Specifically, the protruding portion 310 includes a first frame portion 311 and a second frame portion 312, and the first frame portion 311 extends in the thickness direction H of the electronic device 10 and is annular. The second frame portion 312 extends in the first direction X. The first frame portion 311 and the second frame portion 312 enclose a battery accommodating chamber 301 for accommodating the battery 600. The main body portion 110 of the circuit board 100 is spaced apart from the side wall (first frame portion 311) of the protruding portion 310. In the above arrangement, the main body portion 110 and the first frame portion 311 are provided at intervals to avoid a problem of difficulty in mounting due to assembly tolerance. Meanwhile, the influence of a certain drop variable on the alignment relation of the two is ensured.

Further, the minimum value of the distance d3 between the main body portion 110 and the side wall (first frame portion 311) is 0.8mm or more and 1mm or less. It has been found through a lot of experiments that when the distance between the main body 110 and the first frame portion 311 is within the above range, there is an effective safety distance therebetween, and excessive waste of the effective space is not caused.

The first direction X is parallel to the width direction or the length direction of the electronic device 10, and the thickness direction H of the electronic device 10 is parallel to the thickness direction H of the circuit board 100.

Further, along the thickness direction H of the electronic device 10, a projection of the extension portion 120 and a projection of the battery housing cavity 301 overlap at least partially. In the above embodiment, at least a portion of the extension portion 120 enters the space above the battery receiving cavity 301 by being deformed, thereby making full use of the space in the electronic device 10 and reducing the space occupied by the circuit board 100 in the first direction X. Through the arrangement, the light and thin design of the electronic device 10 is facilitated, and meanwhile, the size of the battery accommodating cavity 301 can be properly enlarged in the first direction X to accommodate a larger battery 600, so that the storage capacity of the electronic device 10 is improved, and the use feeling of a user is improved.

In the present embodiment, at least a portion of the extension portion 120 is disposed between the battery receiving cavity 301 and the display panel 200 in the thickness direction H. With the above arrangement, the dead space in the electronic apparatus 10 is fully utilized.

As shown in fig. 1, in the present embodiment, the display panel 200 includes a display portion 210, a connection portion 220, and a bending portion 230. The connecting portion 220 is used for connecting the display portion 210 and the bending portion 230. The display module chip 700 is fixed on one side of the bending portion 230 away from the display portion 210. The projection of the bending part 230 falls into the display part 210 along the thickness direction H to form the bent display panel 200. Through the above arrangement, the non-display area of the display panel 200 can be disposed on the bending portion 230, thereby facilitating the screen occupation ratio of the electronic device 10 to be improved and realizing the visual effect of the full screen.

The circuit board 100 further includes a pin 150, the pin 150 is fixed to the bending portion 230, and the pin 150 is electrically connected to the display panel 200 and/or the display module chip 700, so as to implement control over the intelligent display and touch screen sensing of the display panel 200.

The auxiliary material layer 400 is fixed between the display portion 210 and the bending portion 230, so as to support the display portion 210, and meanwhile, the auxiliary material layer can stabilize and limit the position between the display portion 210 and the bending portion 230, that is, the auxiliary material layer can support and protect the structure of the display panel 200. When the electronic device 10 is impacted, the auxiliary material layer 400 may play a role of buffering, thereby preventing the display panel 200 from being damaged and deformed.

The auxiliary material layer 400 is fixed between the display portion 210 and the bending portion 230, and may be an area where at least a portion of the auxiliary material layer 400 is disposed between the display portion 210 and the bending portion 230, or may be an area where all of the auxiliary material layer 400 is disposed between the display portion 210 and the bending portion 230.

In this embodiment, the auxiliary material layer 400 includes a first auxiliary material portion 410 and a second raised portion 420, the first auxiliary material portion 410 covers an end of the display portion 210 close to the bending portion 230, and in order to avoid wasting too much space, a thickness of the first auxiliary material portion 410 is smaller than a distance between the display portion 210 and the bending portion 230. The main body 110 of the circuit board 100 is fixedly connected to the first auxiliary material portion 410, and the main body and the first auxiliary material portion can be fixedly connected by means of adhesion or the like. One end of the second step-up portion 420 is fixed to the first auxiliary material portion 410 at a side away from the display portion 210, and the other end is fixed to the bending portion 230. With the above arrangement, the internal space of the electronic apparatus 10 can be reasonably utilized.

Although the present application has been described with reference to a preferred embodiment, it should be understood that various changes, substitutions and alterations can be made herein without departing from the spirit and scope of the application, and all changes, substitutions and alterations that fall within the spirit and scope of the application are to be understood as being covered by the following claims.

Claims

1. The circuit board is characterized by comprising a main body part and an extension part formed by extending outwards from the edge of the main body part, wherein the thickness of the extension part is smaller than that of the main body part.

2. The circuit board of claim 1, wherein the circuit board comprises a plurality of circuit boards stacked in a thickness direction of the circuit board, the plurality of circuit boards including a first circuit board and a second circuit board, the first circuit board having a larger size than the second circuit board;

3. The circuit board of claim 2, wherein the number of first circuit boards is 3 or less.

4. The circuit board of claim 2, wherein the extension has a component in both the thickness direction and a first direction;

the first direction is perpendicular to the thickness direction.

5. An electronic device, characterized in that the electronic device comprises a device middle frame and a circuit board according to any one of claims 1-4; the circuit board is located inside the device midframe.

6. The electronic device of claim 5, wherein at least a portion of the device bezel encloses a battery receiving cavity for receiving a battery of the electronic device;

7. The electronic device of claim 6, wherein the electronic device further comprises a display panel;

8. The electronic device according to claim 7, wherein the display panel includes a display portion, a connecting portion, and a bending portion, the connecting portion is configured to connect the display portion and the bending portion, and a projection of the bending portion falls into the display portion in the thickness direction.

9. The electronic device of claim 8, further comprising a display module chip fixed to a side of the bending portion away from the display portion.

10. The electronic device according to claim 8 or 9, wherein the circuit board further comprises a pin, the pin is fixed to the bent portion, and the pin is electrically connected to the display panel and/or a display module chip of the electronic device.

11. The electronic device according to claim 8, further comprising an auxiliary material layer fixed between the display portion and the bending portion.

12. The electronic device of claim 6, wherein the device bezel includes raised bosses that enclose the battery receiving cavity;

13. The electronic device according to claim 12, wherein a minimum value of a distance between the main body portion and the side wall is 0.8mm or more and 1mm or less.