When we want to develop a touch display product that is used outdoors, what issues need to be considered?
Generally speaking, the most important thing to take into account is the environment, because the outdoor environment is harsh, will experience the wind, sun and rain, so you need to consider waterproof, dustproof, anti-corrosion, anti-reflective and other issues.
1. Waterproof: you can design a waterproof top for the product, while choosing a waterproof touch screen programme.
2. Dustproof: choosing the lamination method of optical bonding for touch screen and display, which lead to the touch screen and display closely together, seamless and airless, effective dustproof.
3. Anti-corrosion, anti-ultraviolet: outdoor products because they will be exposed to the sun and rain, and the ultraviolet light is strong under the sun, and the rain has a certain corrosive, you need to pay attention to anti-ultraviolet, the glass in the sun and rain environment is no problem, but the ink printed above is easy to fall off after a long time, then there are two solutions can be used:
· you can directly use the glass cover plate without screen printing, the disadvantage is not beautiful enough;
· choose to use high temperature ink glass cover plate, high temperature ink glass cover plate in the production process is printed ink, after 680~720 degrees of high temperature so that ink and glass integrated, daily rain and sunlight use without worrying about the problem of discolor ink!
4. the glass strength and hardness: outdoor need to consider some special external causes, there may be foreign objects falling onto the product, which need to consider the strength and hardness of the surface glass:
· glass surface hardness: the surface hardness of ordinary glass is usually in 6H, if you need a higher hardness, consider using high alumina glass, imported high alumina glass is typically represented by: Corning Glass, Dragon Tail Glass, etc., domestic is Kunlun glass, Panda glass, rainbow glass, and so on.
· glass strength: usually, the thicker the glass is the stronger, if the IK level requirements, it is recommended to use a thicker glass!
5. anti-reflection: display products used in outdoor bright light environment, due to the surface of the glass meets the glare reflection will be blinding, but also can not see the contents of the display, the need to do a good job in the surface of the glass cover AG anti-glare treatment. In addition to the glass surface to do AG treatment, you can also choose a high-brightness LCD screen to prevent outdoor glare can not see the contents of the display.
6. the working temperature of the LCD display: outdoor temperature difference, the south and the north of the high and low temperature difference is obvious, so you need to use a wide temperature of the LCD, usually the working temperature of -20 ~ 70 ℃ of the LCD, we call it a wide-temperature LCD.