Knowledge Of ESD Prevention For LCD Displays

LCD LCD screen is short for Liquid Crystal Display, LCD structure is placed in two parallel glass in the liquid crystal, there are many vertical and horizontal small wires in the middle of the two glasses, through the power or not to control the rod crystal molecules to change the direction, the light refracted out to produce the picture. We know that electronic products have high requirements for electrostatic protection, especially fine electronic components, and the strong lcd display manufacturers do a better job in terms of production and manufacturing process or anti-static. Next, let's take a look at the electrostatic protection knowledge of LCD displays.

 

First, LCD display electrostatic sources: the electrostatic sources that have an impact on the circuit are mainly the human body, plastic products and related equipment and instruments, of which the static power supply from the application environment includes objects and materials; Floor, working table and chair; Work clothes, packaging containers; Painted or waxed exterior, organic and fiberglass materials; Cement floor, painted or waxed floor, plastic floor tile or leather floor; Chemical fiber overalls, non-conductive work shoes, clean cotton overalls; Plastic, box, box, bag, tray, Styrofoam liner.

 

Second, LCD display electrostatic discharge failure: sudden failure and potential failure. The electrostatic failure above 90 in the application environment is a potential failure, which is manifested as the weakening of the resistance to electrical overstress of the circuit and the shortening of the service life.

 

Third, LCD display anti-static measures:

 

1, the use of electrostatic sensitive circuit personnel electrostatic knowledge and related skills training.

 

2, set up an anti-static work area, use the electrostatic discharge floor, anti-static workbench, anti-static ground lead and anti-static appliances in the area, and control the relative humidity above 40.

 

3, the damage caused by static electricity to electronic equipment may occur in some small details in the ordinary, should pay attention to the details of the treatment.

 

4, ESD damaged equipment should be marked differently, should not be confused with normal equipment.

 

5, ESD safety and control procedures: establish a perfect ESD electrostatic management system, strengthen the usual detection.

 

LCD display transport and packaging: in daily operation, ESD sensitive equipment should always be stored in anti-static bags or containers. This includes catalog-specific storage, shipping, and WIP. Precautions during transport include the cost of the convoy, boxes or other equipment, such as conductive wheels or tractor connections, during transport ESD equipment is grounded; LCD display is the most widely used display products on the market at present, because it is a high-end display product, the production cost is relatively high, lLCD display manufacturers need to train the company's employees on anti-static knowledge, and control the relative humidity above 40, as far as possible to reduce the damage rate of LCD display in the transport process.