Design Article
Selecting automotive display touch interface
Paul Weindorf, James Kornacki, Visteon
2/19/2013 5:25 AM EST
Predictive display visibility analysis
Once the total reflected background luminance is determined, the required display luminance can be estimated using historical human factor studies. The required display luminance is a straight visibility line on a log-log plot. Figure 6 shows how various film configurations may be studied to determine the best solution to stay above the visibility line. This solution can then be used for a cost-driven optimized system.
The conflict between the aesthetics of a dead-front curved touch lens, display visibility need, and the functional aspects of the display interface create a dynamic new area of development for the automotive supplier. To be productive in this space will require the ability to assess optical performance and develop the best system solution.
Figure 6: Display luminance determination
Once the total reflected background luminance is determined, the required display luminance can be estimated using historical human factor studies. The required display luminance is a straight visibility line on a log-log plot. Figure 6 shows how various film configurations may be studied to determine the best solution to stay above the visibility line. This solution can then be used for a cost-driven optimized system.
The conflict between the aesthetics of a dead-front curved touch lens, display visibility need, and the functional aspects of the display interface create a dynamic new area of development for the automotive supplier. To be productive in this space will require the ability to assess optical performance and develop the best system solution.
Figure 6: Display luminance determination
About the author
. Paul F. Weindorf is Display Systems Technical Fellow at Visteon. Visit www.visteon.com
. James. J. Kornacki is Center Stack Electronics Global Platforms& HMI Subsystems Manager at Visteon.
. Paul F. Weindorf is Display Systems Technical Fellow at Visteon. Visit www.visteon.com
. James. J. Kornacki is Center Stack Electronics Global Platforms& HMI Subsystems Manager at Visteon.
Courtesy of EETimes Europe
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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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