The digitization of the car for modern mobility requires interfaces that offer a more individualized and interactive approach to road users. With increased development of self-driving vehicles, multidimensional infotainment and safety functions are required to accommodate networking. In addition to creating a comfortable cockpit environment, automotive displays support driver safety by providing up-to-date information about traffic events and car functionality.

Automotive infotainment systems provide audio or video entertainment for all occupants via their displays. Advanced driver-assistance systems (ADAS) provide graphical visualization of driver information such as parking assistance, navigation, traffic assistance, control functions and internet connectivity. All setting options in the car can be operated via touch displays.

Freeform and curved automotive displays are the future, enabling larger and more attractive dashboard displays. Housing designs are evolving to better utilize interior space and accommodate these larger and more responsive screens. 

Our solutions for structural bonding of automotive displays meet the needs of market trends, such as the increasing demand for design flexibility. High-precision metering with Henkel’s fully automatic mixing and dosing systems ensure high contour accuracy during adhesive application.

How do you ensure perfect display bonding when cost and design considerations are increasingly narrowing the bonding surfaces of the display housing?

What can you do to compensate for component tolerances during adhesive application, so as to achieve an adhesive bead of uniform width after joining?

We provide the solution for you, with Active Quantity Adjustment (AQA). This method makes it possible to adapt the dosing quantity during application of the adhesive to the part contour. This compensates for production-related differences and irregularities in the bonding surfaces as well as applies a precisely calculated and accurately metered quantity of adhesive. To achieve this, a 3D line scanner measures the part geometry and compares the data with the previously defined CAD reference of the part before the adhesive is dispensed. The result after joining is an adhesive seam that is consistent in height and width.

The trend towards larger displays in vehicles, combined with the need for space-saving installation, has led to narrow-edged display solutions. The challenge is to still achieve strong adhesive bonding with narrow bonding surfaces and thus thin bonding lines.

The adhesive must not protrude at the edges once joining the display to the housing. Fully automatic adhesive application and tolerance compensation are handled by Henkel’s mixing and dosing systems.