CN106132071A - Printed circuit board and mobile terminal - Google Patents

Abstract

The present application provides a printed circuit board and a terminal device, wherein the printed circuit board comprises: a printed circuit board body, at least one component and at least one test point arranged on the printed circuit board body; wherein, when the at least one component is mounted on the printed circuit board body, the at least one test point is covered by the at least one component, and when the at least one component is not mounted on the printed circuit board body, the at least one test point can be used for testing. Thus, the area occupied by the test point on the printed circuit board is reduced, the layout space of the printed circuit board is saved, and conditions are provided for reducing the size of the printed circuit board.

Description

Printed circuit boards and mobile terminals

technical field

The invention relates to the field of electronic technology, in particular to a printed circuit board and a mobile terminal.

Background technique

Usually, in order to facilitate the debugging and measurement of the performance of the circuit, when making a PCB (Printed Circuit Board printed circuit) according to the circuit, it is usually arranged in the PCB board in the form of an empty pad connected to each signal. Test points, so that R&D or testers can test the circuit.

However, arranging test points on the PCB board will occupy the layout space of the PCB board and increase the area of the PCB board.

Contents of the invention

The present invention aims to solve one of the technical problems in the related art at least to a certain extent. For this reason, an object of the present invention is to propose a printed circuit board, by setting test points below the components on the printed circuit board body, the area occupied by the test points is reduced, and the printed circuit board is saved. The layout space of the board provides conditions for reducing the size of the printed circuit board.

A second object of the present invention is to propose a mobile terminal.

The third object of the present invention is to provide a mobile terminal.

In order to achieve the above purpose, a printed circuit board proposed by an embodiment of the present invention includes: a printed circuit board body, at least one component and at least one test point arranged on the printed circuit board body;

Wherein, when the at least one component is mounted on the printed circuit board body, the at least one test point is covered by the at least one component, and when the at least one component is not mounted on the printed circuit board body When on the circuit board body, the at least one test point can be used for testing.

In the printed circuit board provided by the embodiment of the present application, at least one test point is provided under at least one component on the printed circuit board body. Thus, the area of the printed circuit board occupied by the test points is reduced, the layout space of the printed circuit board is saved, and conditions are provided for reducing the size of the printed circuit board.

According to an embodiment of the present invention, the at least one component includes at least two pads;

The at least one test point is arranged between at least two pads of the at least one component and is not electrically connected to the at least two pads.

According to an embodiment of the present invention, the distance between at least two pads of the at least one component is greater than or equal to a preset value.

According to an embodiment of the present invention, the preset value is 0.8 mm.

According to an embodiment of the present invention, the distance between the at least one test point and each pad of the at least one component is equal.

According to an embodiment of the present invention, the side of the body of the at least one component close to the body of the circuit board is made of non-conductive material.

According to an embodiment of the present invention, the diameter of the at least one test point is greater than or equal to 0.4 mm;

Alternatively, the side length of at least one test point is greater than or equal to 0.4 mm.

In addition, an embodiment of the present invention also provides a mobile terminal, which includes the above-mentioned printed circuit board.

In the terminal device provided in the embodiment of the present application, at least one test point is arranged under at least one component on the printed circuit board body. Thus, the area of the printed circuit board occupied by the test points is reduced, the layout space of the printed circuit board is saved, and conditions are provided for reducing the size of the printed circuit board.

To achieve the above purpose, the embodiment of the third aspect of the present application proposes a terminal device, including one or more of the following components: printed circuit board, housing, processor, memory, power supply circuit, multimedia component, audio component, input I/O (I/O) interfaces, sensor components, and communication components; wherein, the printed circuit board is placed inside the space enclosed by the housing, and the processor and the memory are arranged on the printed circuit board on the printed circuit board; the power supply circuit is used to supply power to each circuit or device of the mobile terminal; the memory is used to store executable program code; the processor reads the executable program code stored in the memory program code to run a program corresponding to said executable program code;

Wherein, the printed circuit board includes: a printed circuit board body, at least one component and at least one test point arranged on the printed circuit board body;

When the at least one component is mounted on the printed circuit board body, the at least one test point is covered by the at least one component, and when the at least one component is not mounted on the printed circuit board When on the body, the at least one test point can be used for testing.

In the terminal device provided in the embodiment of the present application, at least one test point is arranged under at least one component on the printed circuit board body. Thus, the area of the printed circuit board occupied by the test points is reduced, the layout space of the printed circuit board is saved, and conditions are provided for reducing the size of the printed circuit board.

Description of drawings

FIG. 1 is a schematic diagram of a state structure of a printed circuit board according to an embodiment of the present application;

FIG. 2 is a schematic structural diagram of another state of a printed circuit board according to an embodiment of the present application;

FIG. 3 is a schematic structural diagram of a terminal device according to an embodiment of the present application;

Fig. 4 is a schematic structural diagram of a terminal device according to another embodiment of the present application.

Explanation of reference signs:

Printed circuit board body-1; at least one component-2; at least one test point-3;

Pad-21; Pad-22; Terminal-Equipment-30;

printed circuit board-31; housing-402; processor-403;

memory 404; power circuit-405; multimedia component 406;

Audio component 407; Interface-408 for input/output (I/O);

sensor component 409; communication component 410.

detailed description

Embodiments of the present invention are described in detail below, examples of which are shown in the drawings, wherein the same or similar reference numerals designate the same or similar elements or elements having the same or similar functions throughout. The embodiments described below by referring to the figures are exemplary and are intended to explain the present invention and should not be construed as limiting the present invention.

The following describes the printed circuit board and the mobile terminal according to the embodiments of the present invention with reference to the accompanying drawings.

FIG. 1 is a schematic structural diagram of a state of a printed circuit board according to an embodiment of the present application, and FIG. 2 is a schematic structural diagram of another state of a printed circuit board according to an embodiment of the present application.

As shown in Figures 1 and 2, the printed circuit board includes: a printed circuit board body 1, at least one component 2 and at least one test point 3 arranged on the printed circuit board body 1;

Wherein, when the at least one component 2 is installed on the printed circuit board body 1, the at least one test point 3 is covered by the at least one component 2, and when the at least one component 2 is not installed When on the printed circuit board body 1 , the at least one test point 3 can be used for testing.

Wherein, it should be noted that the shape and structure of at least one component 2 in FIGS. 1 and 2 are only schematic illustrations.

Specifically, as shown in FIG. 1 , when at least one component 2 is installed on the printed circuit board body 1 , at least one test point 3 is covered, and the user cannot see the test point 3 at this time, and cannot perform a test. And when at least one test point 3 needs to be beneficial to test the printed circuit board, at least one component 2 can be taken off from the printed circuit board body 1, so as to reuse testing instruments, such as voltmeter, ammeter, oscilloscope and other test probes touch at least one test point 3 to complete the test of the printed circuit board. In this way, the test point does not need to occupy the layout space, which saves the layout space of the printed circuit board.

Further, it can be seen from FIG. 2 that at least one component 2 includes at least two pads 21 and 22;

The at least one test point 3 is arranged between the at least two pads 21 and 22 of the at least one component 2 and is not electrically connected to the at least two pads 21 and 22 .

Specifically, after the at least one component 2 is removed from the printed circuit board 1, the circuit connected to the pin of the at least one component 2 may not work normally, and the corresponding circuit signal connected to the at least one component 2 There will also be abnormalities. Therefore, in order to ensure that when at least one component 2 is removed, the circuit signal that is beneficial to at least one test point 3 can accurately reflect the working characteristics of the circuit. At least one test point 3 between 21 and 22 needs to be non-electrically connected to at least two pads 21 and 22, that is, after at least one component 2 is removed from the printed circuit board body 1, at least one test point will not be affected Point 3 is the normal operation of the circuit.

Usually, in order to simplify the plate-making process, at least one test point can usually be set to a circle or a square, and in order to ensure that the test tool can be reliably contacted with at least one test point 3, the diameter of at least one test point 3 needs to be greater than or equal to 0.4 millimeters (mm ), or, the side length of at least one test point 3 is greater than or equal to 0.4mm.

In addition, when selecting at least one component 2, it is also necessary to consider the distance between the pads of the component to ensure that at least one test point 3 is set between at least two pads of at least one component 2, at least one test The electrical safety requirement is met between the point 3 and the at least two pads, that is, the distance between the at least two pads of the at least one component is greater than or equal to a preset value, wherein the preset value is 0.8mm.

In a possible implementation form, if the distance between at least two pads 21 and 22 of at least one component 2 is small, such as 0.8mm, 0.9mm or 1mm, etc., at this time, in order to ensure at least one The distance between the test point 3 and any pad of at least one component 2 meets the electrical safety requirements, and at least one test point 3 needs to be set at the bottom of at least one component 2 and at the center, or, if at least If the pads of a component 2 are distributed asymmetrically, it is necessary to ensure that the distance between at least one test point 3 and each pad of at least one component 2 is equal.

Further, if each pin of at least one component 2 is relatively short, such as when at least one component 2 is a multi-pin chip, when it is installed on the printed circuit board body 1, the body of at least one component 2 It may be in contact with at least one test point 3 arranged below it. At this time, in order to prevent damage to at least one component 2 or affect the circuit connected to at least one test point 3, it is necessary to ensure that the body of at least one component is close to One side of the circuit board body is composed of a non-conductive material, eg.

Those skilled in the art can understand that on the printed circuit board body 1, multiple components with different shapes, structures and functions can be arranged, and test points can be set under all or part of the components, thereby saving layout space .

It should be noted that, if the body area of at least one component is relatively large, multiple test points may also be set under at least one component, which is not limited in this embodiment.

In the printed circuit board provided by the embodiment of the present application, at least one test point is arranged under at least one component of the printed circuit board. Thus, the area of the printed circuit board occupied by the test points is reduced, the layout space of the printed circuit board is saved, and conditions are provided for reducing the size of the printed circuit board.

Fig. 3 is a schematic structural diagram of a terminal device according to an embodiment of the present application.

As shown in FIG. 3 , the terminal device 30 includes: a printed circuit board 31 , wherein the printed circuit board 31 can adopt the form provided by the above-mentioned embodiment shown in FIG. 1 of the present invention.

Wherein, the terminal device 30 includes: a mobile phone or a tablet computer.

In the terminal device provided in the embodiment of the present application, at least one test point is arranged under at least one component of the printed circuit board. Thus, the area of the printed circuit board occupied by the test points is reduced, the layout space of the printed circuit board is saved, and conditions are provided for reducing the size of the printed circuit board.

Fig. 4 is a schematic structural diagram of a terminal device according to another embodiment of the present application. For example, the terminal device may be a mobile phone or the like.

Referring to FIG. 4, the terminal device may include one or more of the following components: a printed circuit board 31, a housing 402, a processor 403, a memory 404, a power supply circuit 405, a multimedia component 406, an audio component 407, an input/output (I/O O) the interface 408, the sensor assembly 409, and the communication assembly 410; wherein, the printed circuit board 31 is placed inside the space enclosed by the housing 402, and the processor 403 and the memory 404 are arranged in the space on the circuit board 31; the power supply circuit 405 is used to supply power to each circuit or device of the mobile terminal; the memory 404 is used to store executable program codes; the processor 403 reads the memory 404 Executable program code stored in to run the program corresponding to the executable program code;

Wherein, the printed circuit board includes 31: a printed circuit board body 1, at least one component 2 and at least one test point 3 arranged on the printed circuit board body;

Wherein, when the at least one component 2 is installed on the printed circuit board body 1, the at least one test point 3 is covered by the at least one component 2, and when the at least one component 2 is not installed When on the printed circuit board body 1 , the at least one test point 3 can be used for testing.

In the terminal device provided in the embodiment of the present application, at least one test point is arranged under at least one component of the printed circuit board. Thus, the area of the printed circuit board occupied by the test points is reduced, the layout space of the printed circuit board is saved, and conditions are provided for reducing the size of the printed circuit board.

In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "between", "connection", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description , rather than indicating or implying that the device or element referred to must have a particular orientation, be constructed and operate in a particular orientation, and thus should not be construed as limiting the invention.

In the present invention, unless otherwise clearly specified and limited, the terms "arrangement", "connection" and other terms should be understood in a broad sense, for example, it can be mechanical connection or electrical connection; it can be directly connected or through An indirect connection through an intermediary may be an internal communication between two elements or an interaction relationship between two elements, unless otherwise clearly defined. Those of ordinary skill in the art can understand the specific meanings of the above terms in the present invention according to specific situations.

In the description of this specification, descriptions referring to the terms "one embodiment", "some embodiments", "example", "specific examples", or "some examples" mean that specific features described in connection with the embodiment or example , structures, materials or features are included in the embodiments or examples of the present invention. In this specification, the schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the described specific features, structures, materials or characteristics may be combined in any suitable manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples and features of different embodiments or examples described in this specification without conflicting with each other.

Although the embodiments of the present invention have been shown and described above, it can be understood that the above embodiments are exemplary and should not be construed as limiting the present invention, those skilled in the art can make the above-mentioned The embodiments are subject to changes, modifications, substitutions and variations.

Claims (9)

1. A printed circuit board, characterized in that it comprises: a printed circuit board body, at least one component and at least one test point arranged on the printed circuit board body; Wherein, when the at least one component is mounted on the printed circuit board body, the at least one test point is covered by the at least one component, and when the at least one component is not mounted on the printed circuit board body When on the circuit board body, the at least one test point can be used for testing. 2. The printed circuit board of claim 1, wherein the at least one component comprises at least two pads; The at least one test point is arranged between at least two pads of the at least one component and is not electrically connected to the at least two pads. 3. The printed circuit board according to claim 2, wherein the distance between at least two pads of the at least one component is greater than or equal to a preset value. 4. The printed circuit board according to claim 3, wherein the preset value is 0.8 mm. 5. The printed circuit board according to any one of claims 2-4, wherein the distance between the at least one test point and each pad of the at least one component is equal. 6 . The printed circuit board according to claim 2 , wherein the side of the body of the at least one component close to the body of the circuit board is made of non-conductive material. 7. The printed circuit board according to claim 1, wherein the diameter of the at least one test point is greater than or equal to 0.4 mm; Alternatively, the side length of at least one test point is greater than or equal to 0.4 mm. 8. A mobile terminal, comprising the printed circuit board according to any one of claims 1-7. 9. A mobile terminal, characterized in that it comprises one or more of the following components: a printed circuit board, a housing, a processor, a memory, a power supply circuit, a multimedia component, an audio component, an input/output (I/O) interface, sensor components, and communication components; wherein, the printed circuit board is placed inside the space enclosed by the housing, and the processor and the memory are arranged on the printed circuit board; the power supply The circuit is used to supply power to each circuit or device of the mobile terminal; the memory is used to store executable program code; the processor reads the executable program code stored in the memory to run and the executable Execute the program corresponding to the program code; Wherein, the printed circuit board includes: a printed circuit board body, at least one component and at least one test point arranged on the printed circuit board body; When the at least one component is mounted on the printed circuit board body, the at least one test point is covered by the at least one component, and when the at least one component is not mounted on the printed circuit board When on the body, the at least one test point can be used for testing.