There's no question we look for the highest quality replacement parts when finding suppliers for smart phone LCD assemblies. The range of screens available on the market vary in cost, construction, and value, and we are happy to provide the best, as well as details on why they meet our standards.
When it comes to LCD screen assemblies, we have found that there are basically two methods of adhesion used in production; a "hot press" process and "cold press." The hot press method, using a heated glue, takes less than 20 seconds, results in a weaker bond, and can lead to delamination in time. The cold press process, using an adhesive that can be applied at room temperature, entails at least 15 seconds of cooling time, followed by 2 to 3 hours of protecting time. It's a costlier process for factories, as it takes longer, and requires state-of-the-art equipment and a sterile environment rivaling that of a surgical bay.
Bezel-less devices are starting to show up, but for most smart phones, the LCD assembly is comprised of at least these four parts:
- Glass - It needs to be incredibly smooth to provide adequate contact for the adhesive.
- Frame - Made of plastic, less than 1 mm thick, and anchors the LCD and glass to the body of the phone.
- Adhesive - Sticks the glass to the LCD and frame
- LCD - Provides the light and measurable screen for the phone, once adhered to the glass.
The adhesive that holds the glass to the frame is found under the white or black opaque areas on the iPhone 5, iPhone 5C, iPhone 5S, and iPhone 6, 6S and 6S Plus in OEM parts. Some aftermarket manufacturers cut costs in this area by opting for the quicker hot press process in refurbishing or repairing LCD assemblies, in unregulated or dusty conditions. But with smart phone screens getting thinner and larger with each generation, manufacturers are finding that the hot press method is not providing enough stickiness to last the lifetime of the device in some cases.
According to the Screen Geeks, adding to the hazards of the hot-press process, heat from regular use of a phone built with the quick-drying hot glue could eventually be enough to compromise the little surface area of adherence that's in play, and contribute to delamination. The process is altogether much less meticulous than the cold press method.
We have secured connections with these state-of-the-art facilities overseas that are currently producing cold press parts with proven success, and are looking forward to keeping them in stock for each model we can find them for. Shop for our full line of cold press parts at GroupVertical.com.
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