Do you know the inspection standard of LED display and box

Time:2018-10-31 Views:350

LED display is more and more widely used today, and the display technology is more and more mature with the development of market economy.LED displays are used in all walks of life, but non-professionals know little about them, so they inevitably encounter many problems when choosing to buy them.The editor below shares the inspection standards of LED display panel and box.

In the purchase, the LED display screen body inspection is very necessary.First of all, from the appearance test: general visual test and hand feel can initially see whether there is a problem on the display screen body;Second, the screen coating should not fall off any phenomenon;Third, we should check whether the color of the screen is consistent, or there is no color phenomenon, bright phenomenon;Fourth, screen screen printing content should be clear, complete, uniform color, no rough edges, defects, trailing tail, pollution phenomenon, all screen printing specific content, location, pattern and font size, detailed description by the corresponding drawings, manufacturers in strict accordance with the design requirements of the drawings.Fifth, the color is consistent with the sample, normal vision is observed under natural light or fluorescent lamp without obvious color difference, with the same batch of products without color difference, the coating surface is smooth, flat and uniform, and the surface shall not have defects such as non-return adhesion, particles, leakage sole, pitting, hair flower, wrinkle, mechanical damage, etc.

Having said the inspection standard of the screen body, it is time to talk about the inspection standard of the box body.

There are many methods for testing the LED display box, and the commonly used tools are: vernier caliper, tape gauge and level gauge.The inspection personnel should inspect the incoming materials of the box strictly according to the designer‘s drawings, and check whether there are few or missing parts.Six points should be paid attention to in the box body detection. First, the size deviation of the LED display box body shall be no more than 0.5mm, and the difference between the two diagonal lines shall be no more than 1mm.Second, check whether the burr is removed and whether the acute Angle is obtuse.Third, each nut and nut column must be treated by the teeth, to ensure that the screw can be locked smoothly;Fourthly, check whether the overall assembly requirements of the box shall be processed according to the drawings truthfully. All parts (such as locks and hinges) shall adopt the existing standard parts, and the mechanical strength and sealing performance shall be guaranteed during the assembly.Fifth, the welding of the box must be solid, without any defect welding, leakage welding and other phenomena, the welding point must be ground, the welding line shall be scraped, the treatment process must be strictly standard, and the welding line must be polished, sealed and waterproof, smooth and without sharp Angle.Sixth, LED module, hole punch and shall ensure that after welding forming positive flatness, around the panel shall have a warp, deformation, the flatness error is less than 1 mm, case positive strictly control panel location hole size, aperture size and pitch error is less than 0.1 mm, group hole axis X, Y direction should be in a straight line, respectively, and the straight line should be perpendicular to the edge of enclosure, vertical degree is less than 1 mm.

The above is the standard of screen and box. I hope it will be helpful to those who are interested in the screen industry or the screen industry.Deronser‘s warm tip: when purchasing LED display screen, it‘s better for the customer to choose an LED display manufacturer with a certain scale and a certain popularity in the industry. And the customer should check the products in the factory before delivery to ensure that the products purchased have no quality problems.