PCB and terminal device using same

Patent metadata

Field	Value
Publication number	US-12484142-B2
Application number	US-202017758111-A
Country	US
Kind code	B2
Filing date	Feb 20, 2020
Priority date	Dec 28, 2019
Publication date	Nov 25, 2025
Grant date	Nov 25, 2025

Abstract

Disclosed in the present application are a PCB and a terminal device using the PCB. At least one electric conductor is added on an exposed section of the PCB, so that the exposed section is divided into at least two sections, thereby the problem of noise interference can be solved without extensively changing the original circuit of the PCB. In this way, the project cycle and test resource can be greatly saved, and the problem of radiation noise generated by the exposed section can be completely solved.

First claim

What is claimed is:

1 . A Printed Circuit Board (PCB), comprising:
a board body; a wire, having an exposed section on at least a portion of a surface of the wire; and a conductor, being provided at at least one preset position of the exposed section, two ends of the conductor are respectively electrically connected to a ground terminal of the board body, and the exposed section is divided into at least two sections; the exposed section is divided into N+1 sections when number of the preset positions is N, wherein N is a natural number greater than or equal to 1; the conductor is any one of a SMD resistor, a metal sheet, and a conductive cloth.

2 . The PCB according to claim 1 , wherein the exposed section is evenly divided into N+1 sections.

3 . The PCB according to claim 1 , wherein the SMD resistor has a resistance value of zero.

4 . The PCB according to claim 1 , wherein the metal sheet is a copper sheet or a steel sheet, and the metal sheet is rectangular.

5 . The PCB according to claim 1 , wherein the conductor is arranged at a preset angle to an arrangement direction of the exposed section.

6 . The PCB according to claim 1 , wherein the exposed section has a radiation noise with a predetermined frequency band.

7 . A Printed Circuit Board (PCB), comprising
a board body; a wire, having an exposed section on at least a portion of a surface of the wire; and a conductor, being provided at at least one preset position of the exposed section, two ends of the conductor are respectively electrically connected to a ground terminal of the board body, and the exposed section is divided into at least two sections.

8 . The PCB according to claim 7 , wherein the exposed section is divided into two sections when number of the preset positions is one.

9 . The PCB according to claim 7 , wherein the exposed section is divided into N+1 sections when number of the preset positions is N, wherein N is a natural number greater than or equal to 2.

10 . The PCB according to claim 9 , wherein the exposed section is evenly divided into N+1 sections.

11 . The PCB according to claim 7 , wherein the conductor is any one of a SMD resistor, a metal sheet, and a conductive cloth.

12 . The PCB according to claim 11 , wherein the SMD resistor has a resistance value of zero.

13 . The PCB according to claim 11 , wherein the metal sheet is a copper sheet or a steel sheet, and the metal sheet is rectangular.

14 . The PCB according to claim 7 , wherein the conductor is arranged at a preset angle to an arrangement direction of the exposed section.

15 . The PCB according to claim 7 , wherein the exposed section has a radiation noise with a predetermined frequency band.

16 . A terminal device using a PCB, wherein the PCB is the PCB claimed in claim 7 .

Assignees

• Huizhou Tcl Mobile Communication Co Ltd

Inventors

• Chen Wei
• Chen Zhiwei
• Zhang Pan
• Chen Yibing

Classifications

• H05K1/025 Primary

  Impedance arrangements, e.g. impedance matching, reduction of parasitic impedance (H05K1/024 and H05K1/0243 take precedence; for semiconductor devices H10W44/20) · CPC title

• H05K1/167

  incorporating printed resistors · CPC title

• H05K1/0215

  Grounding of printed circuits by connection to external grounding means · CPC title

• H05K1/11

  Printed elements for providing electric connections to or between printed circuits · CPC title

• H05K1/0216 Primary

  Reduction of cross-talk, noise or electromagnetic interference (grounding H05K1/0215) · CPC title