DISPLAYS & Uls
Enhancing the user interface
Justin Coleman, display product manager at RDS explores why value-add is essential to product differentiation in today’s challenging display marketplace
S
ome of the challenging issues facing display suppliers in a dynamic 21st century busi- ness environment can range from, developing cost-effective display solutions, improving optical performance, offering robust high-reli- ability modules and replacing existing displays with upgraded and compatible products. But just how can display manufacturers and local suppliers adapt and survive in a fast-changing technology-driven world that is dictated by commodity markets? One effective solution is by adding value and enhancing the user inter- face.
The vast production volumes associated with fast-moving consumer markets strongly infl uence display design and development along with the implementation of new technology and the adoption of new industry standards. Consumer products are driven by a rapid design and development phase, followed by a short, high volume production run. With an accelerated time to market, product lifetimes are fi nite and ultimately defi ned by the next generation of newer, faster, smarter devices that are deemed necessary to maintain sales, drive market growth and remain competitive. The needs and demands of the more stable though no less demanding industrial marketplace differ markedly from the consumer market. An industrial display customer will demand consistent and guaranteed optical performance, dependable and reliable operation in challenging user
18 MARCH 2022 | ELECTRONICS TODAY
environments, extended product lifecycles and continuity of supply.
A highly viable, value-added display proposition can be effi ciently created by local display suppliers offering additional features, application-specifi c enhancements, longevity of supply and design and development services.
Enhancing an established display technology
Many graphical user interfaces require highly consistent optical performance capable of displaying bright, vivid images and information. The need for wide viewing angle and wide fi eld of vision displays has grown as the amount of real-time information and process critical data increases.
When viewed from acute angles, some TFT displays exhibit a loss of brightness that results in a reduction in contrast and image inversion. In-plane switching (IPS) and multi-domain vertical alignment (MVA), are wide viewing angle technologies that provide exceptional colour saturation, colour stability and provide uniform image reproduction over a wide range of viewing angles and viewing positions. Many consumer applications are now using displays of 4K (3840 x 2160 pixels) resolution. The expansion in pixel resolutions and increasing DPI (dots per inch) densities are migrating to higher resolution industrial displays that now include WXGA (1280 x 800), Full HD (1920 x 1080 pixels) and WUXGA (1920 x 1200 pixels). The
adoption of higher resolution displays enables more information and data to be displayed with greater levels of detail.
An enhancement, involving the user experience can be created with high resolution, wide viewing angle displays which are ideally suited to professional broadcast, medical, and test and measurement applications where image clarity, precision and defi nition is paramount.
Adding value, exceeding expectations
When designing-in a TFT display module, development engineers must have confi dence that the chosen display will match and potentially surpass the desired levels of performance required. The availability of plug- and-play display modules, industry standard interfaces, driver boards, unique interconnect, and competent, accessible technical support are essential to ensure user expectations are satisfi ed.
Display suppliers and system integrators can offer an enhanced value proposition, by providing design services to support value-add options and enhancements to enable ease- of-use, greater functionality, and if necessary, fully integrated display module assemblies and sub-systems.
Optical bonding
The use of cover glass when applied with optical bonding technology, together with anti-
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