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Circuit board structure

A technology of circuit boards and circuit components, applied in the direction of circuit devices, printed circuits, printed circuits, etc., can solve the problems of increasing interference and achieve the effect of reducing electromagnetic interference

Pending Publication Date: 2019-12-13
GUANG DONG ELEC-TECH RETOP LED DISPLAY CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the operating frequency of the LED drive circuit is relatively high (from tens of kilohertz to several megahertz), the main forms of interference are conduction interference and near-field interference; in addition, there are many connecting lines in the LED display, and these connecting lines Arrangement has greater randomness, which also increases interference

Method used

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  • Circuit board structure
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Embodiment Construction

[0024] 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 denote 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 only for explaining the present invention and should not be construed as limiting the present invention.

[0025] In describing the present invention, it should be understood that the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", " Orientation indicated by rear, left, right, vertical, horizontal, top, bottom, inside, outside, clockwise, counterclockwise, etc. The positional relationship is based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating ...

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Abstract

The invention provides a circuit board structure. The structure comprises a substrate, a plurality of circuit components arranged on a front side of the substrate and a first metal wiring layer arranged on the front side of the substrate, wherein the plurality of circuit components are electrically connected through the first metal wiring layer; the first metal wiring layer includes multiple metalwires; and each metal wire is arranged in an arc shape at an extending corner. According to the circuit board structure of the invention, the metal wires used for transmitting signals on the circuitboard structure adopt an arc design at the extending corner, and an electromagnetic interference between the adjacent metal wires can be reduced.

Description

technical field [0001] The invention relates to the field of electronic products, in particular to a circuit board structure. Background technique [0002] In the LED display system, there is a periodic high voltage change rate in the LED drive circuit, and the parasitic inductance and capacitance in the circuit make it difficult to eliminate the electromagnetic interference noise of the LED drive circuit. Generally, it can be found in the EMI test results that the LED drive circuit usually easily exceeds the EMI limit at the on / off moment, but it often has a large margin at other frequency points. As an energy conversion device working in the on / off state, the voltage change rate of the LED drive circuit is very high, and the interference intensity generated is relatively large; the interference sources are mainly concentrated during the LED on / off period. Since the operating frequency of the LED drive circuit is relatively high (from tens of kilohertz to several megahertz...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H05K1/02H05K1/18
CPCH05K1/0218H05K1/0233H05K1/18H05K2201/09263
Inventor 贾晓亮王周坤赵建军段志远
Owner GUANG DONG ELEC-TECH RETOP LED DISPLAY CO LTD