Circuit board component and terminal

Provided are a circuit board component and a terminal. The circuit board component includes: a circuit board and a wire disposed on the circuit board, where the wire includes a first portion and a second portion, a line width of the first portion is greater than or equal to a line width threshold, and a line width of the second portion is less than the line width threshold.

TECHNICAL FIELD

The present disclosure relates to the field of communications technologies, and in particular, to a circuit board component and a terminal.

BACKGROUND

With the rapid development of terminal technologies, a terminal has become an indispensable tool in people's life, and greatly facilitates various aspects of people's life. The terminal may be affected by high-frequency noise in some circumstances, and some components such as an antenna on the terminal may be affected when the high-frequency noise passes through a line on the terminal.

It can be learned that, some components on the terminal are easily affected when the high-frequency noise passes through the line on the terminal in a related technology.

SUMMARY

Embodiments of the present disclosure provide a circuit board component and a terminal, to resolve a problem that some components on the terminal are easily affected when high-frequency noise passes through a line on the terminal.

To resolve the foregoing technical problem, the present disclosure is implemented as follows:

According to a first aspect, an embodiment of the present disclosure provides a circuit board component, including a circuit board and a wire disposed on the circuit board, where the wire includes a first portion and a second portion, a line width of the first portion is greater than or equal to a line width threshold, and a line width of the second portion is less than the line width threshold.

According to a second aspect, an embodiment of the present disclosure further provides a terminal, including the foregoing circuit board component.

The circuit board component in the embodiments of the present disclosure includes a circuit board and a wire disposed on the circuit board, where the wire includes a first portion and a second portion, a line width of the first portion is greater than or equal to a line width threshold, and a line width of the second portion is less than the line width threshold. In this way, because line widths of some wires are less than a preset line width threshold, high-frequency impedance is improved, and influence exerted by a high-frequency signal on some other components is reduced.

DESCRIPTION OF EMBODIMENTS

FIG.1is a schematic structural diagram of a circuit board component according to an embodiment of the present disclosure. As shown inFIG.1, the circuit board component includes a circuit board1and a wire2disposed on the circuit board1, where the wire2includes a first portion and a second portion, a line width of the first portion is greater than or equal to a line width threshold, and a line width of the second portion is less than the line width threshold.

In this embodiment of the present disclosure, the wire2may be a wire between a charging interface and a charging conversion component, or may be a wire of some low-frequency signals, for example, a wire of a camera power network, a wire of a display power network, a wire of a touchscreen power network, or a wire of a fingerprint power network. Because the line width of the second portion is less than the line width threshold, an equivalent coupling capacitance between the wire2and the ground is decreased, or even there is no equivalent coupling capacitance, so that high-frequency impedance is improved. Further, because the high-frequency impedance is improved, the wire2can well suppress high-frequency noise, so that influence exerted by a high-frequency signal on some other components is reduced.

It should be noted that the line width threshold may be adjusted based on different actual situations. A specific value of the line width threshold is not limited in this embodiment of the present disclosure. In addition, the second portion may exist at any location of the entire wire2, for example, is located at a middle location of the entire wire2, or is located on one end of the entire wire, or is located on the other end of the entire wire. This is not limited in this embodiment of the present disclosure.

Based on the circuit board component in this embodiment of the present disclosure, line widths of some wires2are less than the preset line width threshold, so that influence exerted by a high-frequency signal on some components can be well reduced, and in addition, costs are very low, so that costs of the terminal can be reduced.

In this embodiment of the present disclosure, the terminal may be a mobile phone, a tablet personal computer (Tablet Personal Computer), a laptop computer (Laptop Computer), a personal digital assistant (personal digital assistant, PDA), a mobile Internet device (Mobile Internet Device, MID), a wearable device (Wearable Device), or the like.

Optionally, the wire2is a wire connected between a charging interface and a charging conversion component.

In this implementation, the charging interface may be a USB type-C interface, or may be a micro USB interface. The wire2is a wire connected between the charging interface and the charging conversion component. Because the line width of the second portion is less than the line width threshold, an equivalent coupling capacitance between the wire2and the ground is decreased, or even there is no equivalent coupling capacitance, so that high-frequency impedance is improved. In addition, because high-frequency impedance is improved, it is very difficult for a high-frequency signal (that is, high-frequency noise) generated by the charging conversion component to reach an antenna by using the wire2, so that influence exerted by the high-frequency signal on the antenna is reduced, thereby improving receiving sensibility of the antenna.

It should be noted that the antenna may be an upper antenna of the terminal, may be a lower antenna of the terminal, or may include the upper antenna and the lower antenna of the terminal.

Optionally, the circuit board component further includes a first hollow area21and a second hollow area22, and the first hollow area21and the second hollow area22are respectively on two opposite sides of the second portion.

In this implementation, shapes of the first hollow area21and the second hollow area22may be the same, or may be different. The shape of the first hollow area21or the shape of the second hollow area22may be a rectangle, an oval, or some other shapes. This is not limited in this implementation. Due to the existence of the first hollow area21and the second hollow area22, high-frequency impedance of the wire2is improved, so that influence exerted on the antenna by a high-frequency signal generated by the charging conversion component can be reduced, and receiving sensibility of the antenna can be improved.

Optionally, as shown inFIG.2, the circuit board component further includes an auxiliary wire disposed between the circuit board1and the second portion, and the auxiliary wire is electrically connected to the wire2.

In this implementation, because line widths of some wires2are less than the preset line width threshold, a width of the wire2is narrowed, and a direct current resistance is increased. In this way, the auxiliary wire is increased between the circuit board1and the second portion, to compensate for the direct current resistance, so that the direct current resistance is not increased. While the direct current resistance is reduced, energy consumption on the direct current resistance is also reduced, so that energy consumption of the terminal can be reduced. Certainly, the auxiliary wire may be disposed at any layer of the circuit board. This is not limited in this implementation.

Optionally, the first hollow area21and the second hollow area22are each a rectangular area, a length of the first hollow area21along an extension direction of the wire is equal to a length of the auxiliary wire, and a line width of the auxiliary wire is equal to a sum of a width of the first hollow area21and a width of the second hollow area22.

As shown inFIG.2, which is a cross-sectional view ofFIG.1taken along A-A′ direction, a line width (Wa) of the auxiliary wire is equal to a sum of a width (W1) of the first hollow area21and a width (W2) of the second hollow area22.

As shown inFIG.3, which is a lateral view of the circuit board component shown inFIG.1, the length (La) of the auxiliary wire is equal to a length of the second portion along the extension direction of the wire. Referring toFIG.1, the length of the first hollow area21along the extension direction of the wire2is equal to the length of the second portion along the extension direction of the wire2. Thus, the length of the first hollow area21along the extension direction of the wire2is equal to the length (La) of the auxiliary wire. It can be understood that the thickness of the auxiliary wire shown inFIGS.2-3is merely for illustration, which is not specifically limited in the present disclosure.

In this implementation, the length of the first hollow area21along the extension direction of the wire may be equal to a length of the second hollow area22along the extension direction of the wire. The length of the first hollow area21along the extension direction of the wire is equal to the length of the auxiliary wire, and the line width of the auxiliary wire is equal to the sum of the width of the first hollow area21and the width of the second hollow area22, thereby compensating for a direct current resistance of the second portion, and ensuring that the direct current resistance of the second portion remains unchanged.

Optionally, the first portion includes a first end and a second end, and the second portion is located between the first end and the second end.

In this implementation, the first end may be an end that is close to the charging conversion component, or may be an end that is close to the charging interface. When the first end is the end that is close to the charging conversion component, the second end may be the end that is close to the charging interface. When the first end is the end that is close to the charging interface, the second end may be the end that is close to the charging conversion component. The second portion is located between the first end and the second end, so that the second portion can have a good impedance function for the high-frequency signal, thereby preventing the high-frequency signal generated by the charging conversion component from affecting the antenna.

Optionally, the circuit board component further includes a first capacitor3and a second capacitor4that are stuck on the first end, an upper pin of the first capacitor3is grounded, a lower pin of the first capacitor3is electrically connected to the first end, an upper pin of the second capacitor4is electrically connected to the first end, and a lower pin of the second capacitor4is grounded.

In this implementation, the upper pin of the first capacitor3is grounded, the lower pin of the first capacitor3is electrically connected to the first end, the upper pin of the second capacitor4is electrically connected to the first end, and the lower pin of the second capacitor4is grounded. Therefore, a current loop direction generated by the first capacitor3is exactly opposite to a current loop direction generated by the second capacitor4. When the first capacitor3and the second capacitor4are close to each other, generated high-frequency magnetic field parts can counteract each other, thereby improving a high-frequency filtering effect, in other words, increasing high-frequency signal insertion loss.

Optionally, the circuit board component further includes a first through-hole located on the upper pin of the first capacitor3and a second through-hole located on the lower pin of the second capacitor4, where the upper pin of the first capacitor3is grounded by using the first through-hole, and the lower pin of the second capacitor4is grounded by using the second through-hole.

In this implementation, the first through-hole is disposed on the upper pin of the first capacitor3, so that the upper pin of the first capacitor3is grounded by using the first through-hole; and the second through-hole is disposed on the lower pin of the second capacitor4, so that the lower pin of the second capacitor4is grounded by using the second through-hole. Certainly, the grounding herein may mean to be connected to the ground at another layer. This is not limited in this implementation.

Optionally, the circuit board component further includes a third capacitor5and a fourth capacitor6that are stuck on the second end, where an upper pin of the third capacitor5is grounded, a lower pin of the third capacitor5is electrically connected to the second end, an upper pin of the fourth capacitor6is electrically connected to the second end, and a lower pin of the fourth capacitor6is grounded.

In this implementation, the upper pin of the third capacitor5is grounded, the lower pin of the third capacitor5is electrically connected to the second end, the upper pin of the fourth capacitor6is electrically connected to the second end, and the lower pin of the fourth capacitor6is grounded. Therefore, a current loop direction generated by the third capacitor5is exactly opposite to a current loop direction generated by the fourth capacitor6. When the third capacitor5and the fourth capacitor6are close to each other, generated high-frequency magnetic field parts can counteract each other, thereby improving a high-frequency filtering effect, in other words, increasing high-frequency signal insertion loss.

Optionally, the circuit board component further includes a third through-hole located on the upper pin of the third capacitor5and a fourth through-hole located on the lower pin of the fourth capacitor6, where the upper pin of the third capacitor5is grounded by using the third through-hole, and the lower pin of the fourth capacitor6is grounded by using the fourth through-hole.

In this implementation, the third through-hole is disposed on the upper pin of the third capacitor5, so that the upper pin of the third capacitor5is grounded by using the third through-hole; and the fourth through-hole is disposed on the lower pin of the fourth capacitor6, so that the lower pin of the fourth capacitor6is grounded by using the fourth through-hole. Certainly, the grounding herein may mean to be connected to the ground at another layer. This is not limited in this implementation.

A circuit board component in an embodiment of the present disclosure includes a circuit board1and a wire2that is disposed on the circuit board1, where the wire2is a wire connected between a charging interface and a charging conversion component, and line widths of some wires2are less than a preset line width threshold. In this way, because line widths of some wires2are less than the preset line width threshold, high-frequency impedance is improved, and influence exerted by a high-frequency signal on some other components is reduced.

An embodiment of the present disclosure further provides a terminal, including the foregoing circuit board component.

It should be noted that in this specification, the term “include”, “including”, or any other variant is intended to cover non-exclusive inclusion, so that a process, method, article, or apparatus that includes a series of elements includes not only those elements but also other elements that are not explicitly listed, or includes elements inherent to such a process, method, article, or apparatus. In the absence of more restrictions, an element defined by the statement “including a . . . ” does not exclude another same element in a process, method, article, or apparatus that includes the element.

The embodiments of the present disclosure are described above with reference to the accompanying drawings, but the present disclosure is not limited to the foregoing specific implementations. The foregoing specific implementations are merely schematic instead of restrictive. Under enlightenment of the present disclosure, a person of ordinary skills in the art may make many forms without departing from the protection scope of aims of the present disclosure and claims, all of which fall within the protection of the present disclosure.