Just as displays in vehicle cockpits keep getting bigger, the annual Society for Information Display (SID) technical symposium in southeastern Michigan (U.S.) continues to grow.
The 24th annual Symposium on Vehicle Displays and Expo was an opportunity for Visteon to shine as a sponsor, exhibitor and featured technical presenter. The event on Sept. 26-27 in Livonia, Michigan, set records with nine sponsors, 66 exhibitors and more than 400 attendees – including engineers, scientists, researchers and other industry professionals.
Visteon presented two technical papers and showcased several displays at the event, which was sponsored by the Detroit Chapter of SID. One of Visteon’s papers, written by Abhilash Marthi Somashankar and Paul Weindorf, was named the best paper of the symposium by the session leaders.
The symposium addressed the latest trends in display-related technology as well as the impact of multi-modal devices on the shift toward autonomous driving.
“There was lots of discussion and interest in head-up displays and augmented reality,” said Brian Hayden, a Visteon technical professional who presented a paper on how display image quality is impacted by a new anti-sparkle clear adhesive. “Another trend that we saw was bendable displays with plastic LCDs, which seem to be taking some interest away from OLEDs (organic light-emitting diode displays).
The two technical papers presented by Visteon related to readability and image clarity of displays in different scenarios. (See accompanying abstracts.)
The paper that earned top honors, titled “HMI Display Readability During Sinusoidal Vibration,” was written by Abhilash Marthi Somashankar and Paul Weindorf, along with former Visteon employees James Krier and Wayne Nowicki. Presented by Somashankar, the paper addressed how vibration can affect the readability of displays, especially those located in non-traditional locations such as the A/B pillars or door panels. “Not all locations of the cockpit can be dynamically stable,” Somashankar said. Effects of vibration can be minimized, he said, by increasing the stiffness of the module and by using metal attachments or other approaches.
Robert Donofrio, treasurer of the Detroit Chapter of SID, said the leaders of the nine sessions under which papers were grouped at the symposium each nominated one paper for the top award. They then assigned points to each of the finalist papers based on criteria including how fresh, interesting, thorough and accurate the research outlined in each paper appeared to be. The winning Visteon paper, which featured numerous charts, illustrations and photos, scored the highest in this polling.
The second Visteon paper, titled “Anti-Sparkle Film Distinctness of Image Characterization,” was written by Hayden and Weindorf, and presented by Hayden. It discussed how a new clear adhesive designed to reduce distracting sparkle in displays can impact image clarity.
During the expo portion of the event, Visteon displayed two high-resolution 12.3-inch reconfigurable instrument clusters, one with resolution of 1920-by-720 pixels and the other 280-by-1080. Also shown was the Prism display, which uses two 12.3-inch TFT displays with a semi-reflective “blade” between them. Geared for premium vehicle applications, the Prism display creates a 3-D image to give the appearance of drawing certain information closer to the driver.
Staffing Visteon’s booth were Chris Round, Doug Pfau, Elijah Auger and Tim Dragos, a co-op student from the University of Michigan – Dearborn, who works in technical sales.
Technical Paper Abstracts
Here are abstracts of the two Visteon technical papers presented at the SID symposium in Michigan:
Title of Paper: “HMI Display Readability During Sinusoidal Vibration”
Authors: Abhilash Marthi Somashankar and Paul Weindorf, along with former Visteon employees James Krier and Wayne Nowicki.
Modern automotive cockpit design trends have increased the number of displays and the locations and manner in how they are packaged. One theme in particular is the packaging of the displays in novel locations that may be marginal in terms of dynamic stability during road load vibrations. Examples of this include displays that adjust their position in the vehicle. The image of the display may be partially or fully blurred during vibration events, which can produce a poor HMI experience and potential safety issues.
This paper (presents) the results of an HMI study that evaluated the readability of different sizes and contrast ratios of TFT color display graphics via jury evaluation during varying vibration acceleration and frequency levels in a controlled lab environment. The result of this study was identification of minimum natural frequencies and maximum acceleration levels for the display mounting structure as a function of display graphics size and contrast ratios. This information is intended to be used by designers of the cockpit structures that package the displays as well as guidance for the HMI design of the display graphics.
Title of Paper: “Anti-Sparkle Film Distinctness of Image Characterization”
Authors: Brian Hayden and Paul Weindorf
The amount of sparkle associated with automotive anti-glare display surfaces is generally worsened with increasing display resolutions. One sparkle countermeasure recently introduced by 3M is the use of anti-sparkle optically clear adhesive (OCA). The distinctness of image (DOI) properties of the 3M anti-sparkle OCA are further investigated.