Optical characterization testing

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By Bob Christensen | Feb 18, 2016
GMN in-house optical characterization testing

One could argue that the display is the most important component of a user interface device as it is the piece that consumers interact with the most. To support our customers’ user interface device programs, GMN offers in-house display testing services including both optical characterization and functional display testing. As an important step in product development, testing is used during both planning and production stages as a quality control tool.

View-fests, a process during which people compare different display options, are still commonly used to select a display design. GMN has the technology to measure the chosen display stack-up with equipment in our Light Lab. Through optical characterization, we can quantify measurements and provide data to support the components of a display. This data can also be used as a target point for future user interface device programs.

Specialized display testing from GMN’s Light Lab gives customers the ability to measure the optical characteristics of a display. Testing is needed to verify whether the design meets program specifications by measuring yellowing caused by UV exposure, reflectivity of the surface, display contrast and readability, luminance, color uniformity, and response time. The Light Lab also allows our technical experts to quantify display performance under various conditions including multiple viewing angles, different light source locations, and testing a display while in different states of power.

By involving GMN early on in the project, our team can assist in component selection and provide design considerations for manufacturability. Read more about GMN’s display testing capabilities in our next blog article about functional testing here: Functional display testing