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Shielding structure capable of reducing electromagnetic interference of display screen

An electromagnetic interference and shielding structure technology, applied in the reduction of crosstalk/noise/electromagnetic interference (magnetic field/electric field shielding, circuit bendable/stretchable parts, etc.) Edge, alignment accuracy is not high enough, labor costs and other issues

Inactive Publication Date: 2018-08-03
SHENZHEN TINNO WIRELESS TECH +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The above-mentioned working machines are difficult to carry out, and need to be attached manually, which takes up a lot of labor costs, and because it is manually operated, the alignment accuracy is not high enough, and the insulating tape and conductive cloth are very easy to curl, and the shielding effect is poor.

Method used

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  • Shielding structure capable of reducing electromagnetic interference of display screen
  • Shielding structure capable of reducing electromagnetic interference of display screen
  • Shielding structure capable of reducing electromagnetic interference of display screen

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0020] Please refer to Figure 1-2 , the shielding structure for reducing the electromagnetic interference of the display screen in the present application includes a display screen FPC and a display driver IC. The display screen FPC has a main body area 1, and a bending area 2 is extended on the main body area 1, and a growth area is extended on the bending area 2. Zone 3; in Figure 1-2 On the side of the FPC shown, a shielding layer is pasted on the growth area 3. The shielding layer can be copper foil or conductive cloth. The shielding layer is electrically connected to the ground terminal on the main body area through the grid copper sheet 4, and the grid copper sheet is covered on the display. On the data line of the screen FPC, the grid copper sheet is coated with an insulating ink layer.

[0021] Wherein, the grid copper sheet and the copper foil are made of copper Cu.

[0022] exist Figure 3-4 On the side of the FPC shown, the growth area 3 is pasted with insulati...

Embodiment 2

[0033] In actual production, there are other mobile phone designs that do not require a bending area, and this embodiment is proposed for this purpose. Compared with Embodiment 1, other structures are the same, the only difference is that there is no bending area in the FPC, and the growth area directly extends from the main body area.

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Abstract

A shielding structure capable of reducing electromagnetic interference of a display screen comprises a display screen flexible printed circuit (FPC) and a display screen driving integrated circuit (IC), wherein the display screen FPC is provided with a main body region, a growth region is arranged on the main body region in an extension way, a shielding layer is pasted on a side surface of the growth region, the shielding layer is electrically connected with a grounding end on the main body region, an insulation double-side adhesive is pasted on the other side surface of the growth region, andthe display screen driving IC is pasted on the other surface of the insulation double-side adhesive. Since the growth region is arranged on the main body region of the FPC in an extension way, a structure that the shielding layer and the insulation double-side adhesive are respectively pasted onto two surfaces of the growth region can be achieved by a machine in an FPC plant, manual participationis prevented, and the production cost is greatly reduced.

Description

technical field [0001] The present application relates to the technical field of communication, and in particular to a shielding structure for reducing electromagnetic interference of a display screen. Background technique [0002] At present, the resolution of mobile phones and tablets is getting higher and higher, and the signal transmission speed between the processor and the display screen is getting faster and faster, and the resulting harmonics will interfere with the signal transmission of the mobile phone antenna. [0003] The existing solution is to paste copper foil or conductive cloth on the driver IC of the display screen, and extend the conductive cloth or copper foil to the flexible printed circuit board (Flexible Printed Circuit, FPC) of the display screen for grounding. [0004] Because the surface potential of the driver IC of the display screen is not necessarily the ground potential, it is necessary to paste a layer of insulating tape on the upper surface ...

Claims

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Application Information

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IPC IPC(8): H05K9/00H05K1/02
CPCH05K9/0022H05K1/0216H05K1/0281H05K9/0039H05K2201/10371
Inventor 杜长运邹少林倪漫利
Owner SHENZHEN TINNO WIRELESS TECH
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