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full lamination touch screen display
May 22, 2018

Full lamination is also referred to as non-air-gap technology. Compared with the traditional lamination method, the full plane lamination image reflected from the screen can clearly see the difference in images. This is the mainstream development trend of high-end SMT chip processing smart phones and tablet PCs. The manufacturing process and components of the touch panel seem to be simple, but in fact, the manufacturing process of the touch panel varies greatly. In terms of technology, the front-end process and the back-end process are highly variable and grow.

    Full-surface bonding technology is to glue the panel directly to the outer glass (or touch panel) with glue. Since the middle is in a vacuum state, the problem of refraction of light can be avoided, but if the traditional word-of-mouth glue is used, it is very It's easy to see the overlap phenomenon like two pieces of glass. In addition, full-flattening makes the screen more vivid and high-detailed. Even under strong outdoor light, the screen display of SMT-processing mobile phones or tablets can be clearly seen.

    Full-planar lamination will be a trend that cannot be completed, but the challenge is that the difficulty of lamination is much higher than that of the touch panel glass capacitor, and the larger the size, the harder it is to fit. Both LCD panels and touch panels are not low in price, and if they are damaged in the process of lamination, the loss will be very large.

    What is full-fit technology? The competition of smart phones has become increasingly fierce. Many manufacturers hope to highlight themselves through hardware differentiation. What new terms such as IPS, SLCD, Retina, and ClearBlack appear constantly, and many times when we do not understand new technologies New technical terms were born. Recently, many mobile phone manufacturers have started to use the "full-fit" technology to increase the selling point of their mobile phones. What exactly is this, let's take a look.

The structure of the screen

    From the screen's structural point of view, we can roughly divide the screen into 3 parts, from top to bottom are protective glass, touch screen, and display. The three parts need to be affixed. In general, two affixations are needed, one time between the protective glass and the touch screen, and the other one is between the display screen and the touch screen. According to the way of fitting, it can be divided into two types: full fit and frame paste.

What is full fit technology?

What is full fit technology?


Box stickers

    The so-called frame paste, also known as paste glue, that is simple to double-sided adhesive to the touch screen and the four sides of the display fixed, which is the current most of the display used by the fitting method, its advantages are the simple process and low cost , But because there is an air layer between the display screen and the touch screen, after the light refracts, the display effect is greatly reduced to become the biggest drawback of frame stickers.

Full fit

    Full-fitting means that the panel and the touch screen are completely glued together in a seamless manner with water glue or optical glue. Compared with frame stickers, it can provide better display effect.

Full fit advantages

    Full-fit technology eliminates air between screens, which helps reduce reflections between the display panel and the glass, allowing the screen to look more transparent and enhance the display of the screen. At present, some mobile phones, such as the iPhone 4S, Mi 2, Nexus 7, and Ascend D1 quad-cores, also use full-fit technology. In addition, Apple's latest iMac also uses full-fit technology.

iMac Reflective with Full Fit Technology Can Reduce 75%

iMac Reflective with Full Fit Technology Can Reduce 75%


    Another advantage of full-fit technology is that the screen will never get ash. The touch module also improves the strength due to the close integration with the panel. In addition, the full-fitting can effectively reduce the interference caused by the display panel noise on the touch signal.

    Although the advantages of full-fitting are huge, the yield rate is relatively low. Because the surface glass and even the consumption and scrapping of the panel during the lamination process caused by the poor yield rate will inevitably cause the increase in cost, so the defoaming Fitting the control of yield will become a more important factor than material cost.

    As the full-fit technology makes the display effect of the screen significantly improved, it will inevitably be the battleground of the military. The input of many manufacturers will also help reduce costs and speed up the improvement of the yield. I believe that the full-fit technology will soon Get popular in most of our mobile phones.

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