A analysis of the optical bonding touch screen technology
Touch display screen, a display touch device that integrates LCD display screen and touch screen, is widely used in human-computer interaction applications. In recent years, with the use of mobile phones, more and more intelligent products use touch display screen as display touch device. There are generally two ways to combine the display screen and touch screen, optical bonding and air bonding. Now let's talk about one of the optical bonding touch screen technology.
Optical bonding is one of the most widely used LCD display and touch screen fit, the advantages of this way is tight seams, not easy to dust, and the display effect is better.
We mainly use OCA adhesive full fit, which is a special adhesive used for cementing transparent optical components, with colorless and transparent, light transmittance above 90%, good cementing strength, Krypton curing at room temperature or medium temperature, and curing shrinkage.
The characteristic of optical bonding is that every new product needs to be moulded, and the cost of full paste is relatively high. However, due to the machine fitting, high precision, uniform thickness, and no glue overflow, the new temperature is better. Its disadvantage is that the process is complex, the production yield is low, the rework is difficult, the equipment input cost is high, the maintenance cost is high, the workshop production environment requirements are higher.