Mobile terminal and device for improving EMC performance of mobile terminal display screen

Abstract

The embodiment of the invention provides a mobile terminal and a device for improving the EMC performance of a mobile terminal display screen. The device comprises a first display screen FPC which is connected to a motherboard and a display driving chip, a second display screen FPC which is arranged at the left side of the first display screen FPC, a third display screen FPC which is arranged at the right side of the first display screen FPC, first conductive films which are arranged at the upper surfaces of the first display screen FPC, the second display screen FPC and the third display screen FPC and are connected to the second display screen FPC and the third display screen FPC and a whole machine EMC shielding ground signal end, second conductive films which are arranged at the lower surfaces of the first display screen FPC, the second display screen FPC and the third display screen FPC and are connected to the second display screen FPC and the third display screen FPC and the whole machine EMC shielding ground signal end, and an EMC shielding component which is arranged under the vertical direction of the projection area of the display driving chip and is connected to the whole machine EMC shielding ground signal end, the first conductive films and the second conductive films. According to the embodiment of the invention, the EMC performance of the display screen module and a whole machine can be greatly improved.

Description

technical field [0001] The invention relates to the technical field of mobile terminals, in particular to a device for improving the EMC performance of a display screen of a mobile terminal and a mobile terminal. Background technique [0002] The intelligent development of mobile terminals is getting faster and faster. At present, common touch-screen and button-type smart mobile terminals have more and more integrated functions and more and more powerful performance. Various smart mobile terminals have changed from simple communication tools to one. Integrated information processing platform and communication data center have become very important mobile office and entertainment equipment in people's daily life. With the continuous development of electronic technology, the circuit design and system functions of mobile terminals have become more and more complex, the thickness has become thinner and thinner, and the size of the display screen has become larger and larger, thu...

AI Technical Summary

Problems solved by technology

[0006] The EMC design scheme of the display screen in the related art has the following disadvantages: the EMC performance of the display screen is poorly consistent and attenuated for a long time, the single hardware of the display screen is damaged, the common ground interference cannot be eliminated, and the high-speed signal of the display screen interface cannot be fully shielded from other circuits. There is a risk of serious interference with module performance indicators, and at the same time increases the instability of the mobile terminal system software, affecting the quality of mobile terminal products and user experience

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