Why does a thousand yuan machine love all kinds of GFF?
发布时间:2017-11-01 点击次数:

A few years ago, almost everyone had met the "screen entry", but why did we stop discussing the problem these years? Because at present, even thousands of Yuan entry machine also adopts the way of screen GFF full fit, but do you know the difference between GFF, OGS, TOL, on-cell and in-cell in the full screen?


In the past, the biggest problem of screen is the poor permeability. When it's screen, it can see that the screen is a large gray rectangle, which is mainly related to its structure. Most of the screen can be simplified to three layers: "glass + touch layer (glass) + display layer".

The ordinary screen structure doesn't look transparent
For ordinary screen, will be more than three layers are fixed together on the need to use the adhesive, the early process is just to stick around and inter layer, so inevitably occur in the middle of the air layer, the three layer structure of two layers of glass + two layers of air will lead to light reflection, thus leading to the very a bad impression, even outdoor is very easy to see the screen.

GFF: pseudo full fit, 1000 yuan machine favorite



GFF solves the problem of ray reflection between multilayer structures
In order to solve the problem that the screen is not transparent and the size is thicker, the GFF process appears. It directly to the above non laminating intermediate layer of glass for touch PET films, and optical glue (glue) completely filled air layer, and less of a layer of glass and the air layer is filled with water gel, reflection phenomenon significantly reduced, resulting in a very significant upgrade perception of the screen is no longer is grey.


At present, some models are GFF full fit as a propaganda point
Because the touch layer of GFF technology is still independent, so the "GFF full screen" is not exactly right, or it's more like a whole fit and incomplete fit. GFF has been popularized in most of the medium and low end models at present. It has the characteristics of low technological difficulty, high rate of good products, and the difference between the impressions and the full fitting process is not very large. So many manufacturers' middle and low end models use the GFF screen. In addition, the GFF process is tightly combined with the multi-layer structure, so the screen panel is usually changed after the screen is broken.

OGS/TOL:Technology to increase the sensitivity of touch control

OGS/TOL:Technology to increase the sensitivity of touch control

n fact, it's the whole fitting screen from here. The OGS full fit means that the touch layer is directly inside the protective glass, so the whole screen is changed from three layers of glass + touch layer + display layer to two layers of "glass (with touch) + display layer", and the thickness is reduced. The two layers are still combined with water glue, and the permeability is a boost compared to the above GFF. At the same time, as the touch layer is next to the screen protection glass, OGS also brings the improvement of touch sensitivity. There are many high-end Nubia models such as Nubia Z9 mini and so on in the domestic models.


       
OGS has to mention TOL technology, and structurally, the two technologies are actually roughly equivalent, only the process of achieving the final effect is not the same. When producing the screen panel, the OGS first installs the touch layer and then cuts it into the size of the phone screen, while the TOL is cut first and then the touch layer is installed. There are two ways to achieve the same effect. The main reason is that the latter TOL can be strengthened again after glass cutting. The final screen is stronger than OGS, but the cost is higher. TOL technology was used before the Meizu MX2.
in-cell、on-cell:The ultimate slim isin-cell

in-cellThe interlacing of the medium touch unit and the display pixel
For the pursuit of the ultimate slim mobile phone industry, even a few mm glass panels were not spared. The in-cell product is the pursuit of the ultimate slim, it will directly touch layer and the display panel is "fit", touch control unit and the display pixels are intertwined, the difficulty of high technology, the yield is low, but apple in iPhone 5 years ago it began using this technology, almost can be seen as a for the pursuit of the ultimate slim and regardless of the cost approach, the screen is also very expensive to repair broken. Of course, the last one is the consumer, and iPhone never sells.


Most of the models using the AMOLED screen are on-cell       
     
Compared with the above in-cell, on-cell from the literal meaning can be seen, it will be done in the touch layer display layer, so it is difficult to process or yield can be improved, but it can not touch control unit integrated in the display layer, so thin is not up to in-cell so extreme. The representative of the on-cell screen is Samsung's AMOLED screen.

Summary: at present the fitting process of the screen in perceptions are very good, and the gap between them is compared also difficult to detect, so apple is not using in-cell means it's perception of the best, in fact it is the advantages of in-cell ultimate slim. OGS is highly sensitive to touch to a certain extent, but the disadvantage of OGS is that cutting in the manufacturing process will affect the strength of the glass panel and make it fragile. In addition, many manufacturers will be in the thousand machines will be "GFF full fit" as a propaganda point, but you also have seen above all fit the GFF is not in the strict sense, but we can't go to black, after all, in the low-end equipment especially the main cost of the thousand machines at the beginning of the design, the cost of consideration is more stringent than the flagship machine.