We have it in front of our faces every day, but only pay it any attention if it breaks. A layer of transparent coverglass sits over all the display panels that we use every day – in smartphones and tablets, televisions and monitors – and is essential in guarding the delicate electronics underneath, while also enhancing the quality of the display.
In industrial use displays, it’s the interface through which we monitor, control, and visualize complex systems and the choice of coverglass, while far from front of mind for users, is of enormous importance. Certainly, when we are making key production decisions for our customers, we immediately consider the safeguarding requirements of these sophisticated and often critical systems.
For example, the display needs in manufacturing settings are different to those in hospitals, so it is imperative that choice of coverglass enters the conversation. In industrial settings, for example, there may be harsh conditions to counter, such as mechanical impacts, temperature fluctuations, chemical exposure, and potential contaminants. The coverglass acts as a protective barrier, ensuring the longevity and operability of industrial displays.
As previously mentioned, it also contributes to the optical performance of displays, even in industrial environments. Optical clarity, anti-glare properties and resistance to environmental factors are all-important in maintaining function, effective visibility legibility and, therefore, accurate data interpretation.
When we select coverglass for a customer’s project, we are meticulously in scoping for their precise operational and environmental needs. And there are several types for us to choose from:
Soda-Lime Glass
Composed primarily of silica, sodium oxide, and calcium oxide, this is one of the most commonly used types of glass for coverglass production and is popular for its affordability and ease of manufacturability. While not as scratch resistant as some other glasses, it still provides adequate protection and maintains excellent optical transparency.
Soda-lime glass strikes a balance between durability and cost-effectiveness, making it a staple in consumer electronics such as smartphones and tablets.
Aluminosilicate Glass:
Alkali-aluminosilicate glass provides exceptional durability and scratch resistance but has a different chemical composition to soda-lime glass. It undergoes an ion-exchange process, which gives it a higher surface compression and enhances its resistance to scratches and impacts. It’s usually found in high-end smartphones, laptops, and tablets, where the demand for superior protection aligns with the desire for optimal display quality. We will often select it for mobile industrial applications which are used frequently, as aluminosilicate glass has exceptional durability and can offer superior scratch resistance and impact protection.
Sapphire Glass:
This glass takes durability to the next level. It is composed of crystalline aluminum oxide and is remarkably tough and scratch resistance, even surpassing Gorilla Glass. This makes it highly desirable for applications where ultimate protection is paramount. Sapphire glass is often found in luxury watches, camera lenses, and premium smartphones, where its incredible resilience caters to consumers who value both aesthetics and durability. However, in the industrial space, sapphire glass is seldom used.
Coverglass innovation is ongoing and we, of course, stay on top of the latest advances in all aspects of display technology. Glass is the unsung hero that requires both knowledge and understanding so we can make informed choices on behalf of our customers, bringing clarity, resilience, and functionality products to important industrial applications.
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Frank Ploenissen - Marketing Manager Display Integration, Avnet at Avnet After getting his diploma in electrical engineering, Frank entered the world of display solution and distribution in the year 2000, holding product responsibility for several display and touch lines. Starting 2007 he worked as a sales and marketing manager for a design and manufacturing company of CCFL and LED backlight drivers, and afterwards established the German branch for a Austrian display and solution provider. In 2013, Frank joined former MSC which in turn was bought by Avnet. In his current role as Marketing Manager Display Integration, Frank and his team supports the Avnet team and their customers concerning the integration of display products into customer applications and steers and extends the product lines of SimplePlus and MipiPlus display solutions.Read More |
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