What They Say
German display engineering specialist Wammes sent out a press release describing a new method it has for checking the quality of UV-cured Optical Bonding without destroying them. This means that there is a chance to rectify and rework, improving yields. The system uses pattern recognition to find the defects among a lot of noise in the images.
“Up to now, a subsequent analysis of the quality of the optical bonding of a given display was rather pointless, as it was either not very informative or destroyed the display when examined closely. Using a new method, semi-finished products and devices can now be analyzed for their bonding without destroying them, delaminating them or affecting the integrated display,”
said Klaus Wammes, Managing Director of Wammes und Partner GmbH.
What We Think
Optical bonding is one of those processes that, on the face of it, seems simple. However, there are a lot of things that can go wrong and although it adds some value to the base product, if it goes wrong and you can’t rework, the yield impact can be very high as you are usually dealing with finished displays which may need to be scrapped. It was widely reported that when Microsoft its large Surface displays for meetings, it was intent on having thin glass and as little as possible parallax error between the pen and the display. That mandated bonded panels and initially the firm had to make its own equipment as nobody was bonding such large panels at the time and was one of the reasons suggested at the time for the delay in the initial production of the product. (BR)
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