A kind of mobile terminal and the device for improving the emc performance of its display screen

Abstract

Provided are a mobile terminal and a device for improving the electromagnetic compatibility (EMC) of a display screen thereof. The mobile terminal comprises: a first display screen flexible printed circuit board (FPC) (11) respectively connected to a mainboard (17) and a display drive chip (18); a second display screen FPC (12) arranged on the left side of the first display screen FPC (11); a third display screen FPC (13) arranged on the right side of the first display screen FPC (11); a first conductive thin film (14) arranged on the upper surface of the first to third display screens FPCs (11-13) and respectively connected to the second to third display screens FPCs (12-13) and an EMC shielding ground signal end (19) of a complete machine; a second conductive thin film (15) arranged on the lower surface of the first to third display screens FPCs (11-13) and respectively connected to the second to third display screens FPCs (12-13) and the EMC shielding ground signal end (19) of the complete machine; and an EMC shielding component (16) arranged under the vertical direction of a projection region of the display drive chip (18) and respectively connected to the EMC shielding ground signal end (19) of the complete machine and the first to second conductive thin films (14-15).

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

Images