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A liquid crystal display module resistant to electrical interference

A liquid crystal display module, electrical interference technology, applied in nonlinear optics, instruments, optics, etc., can solve the problems of unstable power supply, no display, safety hazards, etc., to avoid static electricity inflow and reduce aggregation time Effect

Active Publication Date: 2021-02-02
VARITRONIX HEYUAN DISPLAY TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Electric fast transient (EFT) interference is generated when the inductive load is disconnected in the circuit. Due to the unstable power supply of the equipment, the jitter of the switching device, and the change of the surrounding electromagnetic field, a higher frequency electronic burst interference is generated. The liquid crystal display displays disorderly or no display, and even damages the electronic components in the liquid crystal display, causing potential safety hazards. Therefore, the design of anti-Electric Fast Transient (EFT) interference is equally important, which can help improve the stability of liquid crystal display products

Method used

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  • A liquid crystal display module resistant to electrical interference
  • A liquid crystal display module resistant to electrical interference
  • A liquid crystal display module resistant to electrical interference

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Experimental program
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Effect test

Embodiment 1

[0023] Such as figure 1 with figure 2 As shown, a liquid crystal display module resistant to electrical interference includes two layers of ITO surface glass substrates. Conductive materials are arranged on the surface of the surface glass substrates. The conductive materials are connected to the ground wire. The substrate is in contact, and the resistance generated by the contact between the iron shell and the glass substrate is as small as possible. A TVS diode array, a common mode inductor and a differential mode capacitor are connected in parallel between the power line and the ground wire of the liquid crystal display module, and the common mode inductor and the differential mode capacitor are respectively connected in parallel between the power line and the ground wire.

[0024] Electrostatic discharge will generate a very high transient voltage, and the speed is very fast, and it can be completed within hundreds of millions of seconds. If such a high voltage cannot be...

Embodiment 2

[0027] The difference from the first embodiment is that the filtering device is a ferrite bead.

[0028] The surface glass substrate of the liquid crystal display module adopts the existing double-layer ITO glass substrate design, and the surface of the iron shell and the surface glass substrate is in good contact. The iron shell is a good conductive material, and the iron shell and the surface glass substrate are in contact. The smaller the contact resistance, the better, and then connect the iron shell and the power ground wire to form a discharge circuit. When the outside world discharges to the surface of the LCD module, the charge on the surface of the LCD module will gather together under normal conditions and will not be released. way, so as to form an electric field, and the liquid crystal display module will cause false display under the action of the electric field. After the iron shell is installed, the charge on the surface of the liquid crystal display module will ...

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Abstract

The invention discloses a liquid crystal display module resistant to electrical interference, which comprises two layers of ITO surface glass substrates, conductive materials are arranged on the surface of the surface glass substrates, and the conductive materials are connected to ground wires; the liquid crystal display module The TVS tube array and filtering device are connected in parallel between the power line and the ground line. The TVS tube array is added to deal with the situation where static electricity is introduced into the line. When static electricity is introduced from the port of the LCD module, it will invade the equipment circuit and generate a high static peak, which will cause damage to the line device. After adding the TVS tube array, the static peak will When flowing through the TVS, it will form an instantaneous discharge to the ground, which can effectively clamp the static peak at the required voltage, avoid static electricity from flowing into the rear circuit, and damage the device. The invention can effectively eliminate electrical interference such as EFT and ESD.

Description

technical field [0001] The invention relates to a liquid crystal display module, in particular to a liquid crystal display module resistant to electrical interference. Background technique [0002] Liquid crystal display modules are becoming more and more popular in today's society and are used in various fields: aircraft, automobiles, industrial control, consumer goods and other industries. As an important part of human-computer interaction, while providing convenience for people's lives, product performance requirements Higher and higher, and product safety is the top priority. As factors such as human body static electricity, equipment static electricity, and air static electricity that may appear everywhere in production and life, they will affect the performance of the product at any time, resulting in no display or disordered display on the LCD display, and even damage the LCD display in serious cases, causing certain damage to the operator. Troubled or wrong judgment...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G02F1/1333G02F1/1362
CPCG02F1/1333G02F1/136286G02F2202/22G02F1/136295
Inventor 韩永刚龚兆业
Owner VARITRONIX HEYUAN DISPLAY TECH