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A low electromagnetic leakage liquid crystal screen

A liquid crystal screen, low electromagnetic technology, applied in the computer field, can solve the problem of not being very good, reducing the electromagnetic radiation of the liquid crystal screen, etc., to achieve the effect of reducing signal radiation, reducing electromagnetic radiation, and reducing signal leakage

Active Publication Date: 2020-12-18
SHANDONG CHAOYUE DATA CONTROL ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

As for how to reduce the electromagnetic radiation of the liquid crystal screen itself, so that the liquid crystal screen itself meets the electromagnetic compatibility requirements of the national military standard, there is no good method at present.

Method used

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  • A low electromagnetic leakage liquid crystal screen
  • A low electromagnetic leakage liquid crystal screen
  • A low electromagnetic leakage liquid crystal screen

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Effect test

Embodiment Construction

[0029] The invention provides a low electromagnetic leakage liquid crystal screen, such as Figures 1 to 7 As shown, it includes: a liquid crystal panel assembly 7, a shielding film 1 is pasted on the front of the liquid crystal panel assembly 7, and a metal frame 3 is set around the liquid crystal panel assembly 7;

[0030] The back of the liquid crystal panel assembly 7 is provided with a metal back cover 5, and one side of the back of the liquid crystal panel assembly 7 is provided with a circuit board shield 4; , the conductive cloth 11 is pasted on the gap, so that the circuit board shield 4 and the metal back cover 5 form a shielding sealed cavity to reduce internal signal leakage; a connecting line 13 is arranged in the shielded sealed cavity, and the driving circuit board 8, the cable 6, and the cable Socket 9, cable plug 10, socket shield 14, ground plane 16 and signal area 17; cable socket 9 is connected to drive circuit board 8, and the outer layer of cable socket 9...

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Abstract

The invention provides a liquid crystal screen with low electromagnetic leakage. According to the liquid crystal screen with the low electromagnetic leakage, a layer of shielding film fits the surfaceof a liquid crystal panel and the conducting face of the shielding film is in lap joint with a liquid crystal screen metal frame to achieve shielding of a display area and reduce the signal leakage of the display area; the back face of the liquid crystal screen is a metal shell formed by stamping integrally and buckled with the metal frame together to cover the liquid crystal panel and a drive circuit board, contacts are set on the buckled face to reduce contact resistance, external connectors of the drive circuit board of the liquid crystal screen all adopt connectors with metal shells, themetal shells of the connectors are in lap joint with a metal shell of the liquid crystal screen, and gridiron contacts are set on the lap joint face to achieve good lap joint; a wiring connector adopts the connector with the metal shell, after the wiring connector is inserted into the connector of the drive circuit board of the liquid crystal screen, the metal shells of the wiring connector and connector of the drive circuit board of the liquid crystal screen are in lap joint, conductive cloth are pasted on the outer portions of the metal shells, thereby reducing the signal leakage of cables and connectors.

Description

technical field [0001] The invention relates to the technical field of computers, in particular to a liquid crystal screen with low electromagnetic leakage. Background technique [0002] LCD screens are widely used as computer display devices, and are also widely used in military equipment because of their good human-computer interaction capabilities. Because military computers are mostly used in relatively harsh environments, they need to meet the requirements for electromagnetic compatibility in the national military standard, but the current LCD screen itself cannot meet the requirements and needs to be processed. Now the usual practice is to wrap the LCD screen in a metal shell, and increase the shielding display window in the display area. This method is to process the outside of the LCD screen, which will increase the weight and volume, and the weight and volume are very important for portable devices. Compare key indicators. In this regard, the patent CN201610196392...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/1333H05K9/00
CPCG02F1/133308G02F1/133334H05K9/0054
Inventor 李义臣王晓龙王雪鹿博
Owner SHANDONG CHAOYUE DATA CONTROL ELECTRONICS CO LTD
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