Design Article
Selecting automotive display touch interface
Paul Weindorf, James Kornacki, Visteon
2/19/2013 5:25 AM EST
The center stack panel area of today’s vehicles has become the integration site for many occupant interface technologies and is being driven by consumer requirements influenced by today’s personal electronic devices. The display interface is an area of particular focus in the automotive industry as poke-through resistive touch displays yield a more modern touch-lens in the integrated center control panel – see figure 1.
Figure 1: Touch-lens in integrated center control panel
Display interface requirement considerations for the touch-lens include functional, aesthetics, and performance & conformance categories. Figure 2 shows a representation of these interface requirements (green), enablers (yellow), and the key component (pink) of the system. Addressing all of these considerations within the touch-lens component for automotive use significantly shrinks the solution space due to competing requirements that can be grouped in the following categories:
• Functional – multi-touch sensing, touch with press-for-intent, force feedback haptics, and spatial gesture recognition
• Aesthetics – dead-front look, minimize fingerprints, seamless front surface, and curved surface
• Performance & Conformance – display visibility, acceptable birefringence, head impact regulatory compliance, and environmental performance.
Figure 2: Touch-lens system interface diagram
Click on image to enlarge
Next: Functional requirements
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MLM-TS
2/22/2013 2:17 PM EST
The touch-screen has to be the most idiotic item in an automobile. Try executing a program on your tablet or smartphone blindfolded. I can't believe all the man-years that have gone into designing controls to be unambiguously identified by location, size, shape, texture, orientation, etc. have been tossed out and replaced with controls that one has to look at to identify and operate. Sounds like a colossal safety issue to me.
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