Different technologies and structures of iPhone LCD screens

iPhone 4 screen replacement

  A good quality iPhone LCD copy is due to appear in the market. So far, no negative reactions and feedback. We all know that iPhone LCD prices are soaring, with no chance to drop soon. Although the high cost of OEM parts is a solid reason for the mobile phones repair community to be upset, putting on a test some after-market screen assemblies won’t be a bad choice. How many screens do you know in the current market? In the following part, I’ll give you the details.

Nowadays, Apple is working on increasing their control of OEM parts marketplace and accredited after-sale services. Furthermore, the original screens for iPhone 5S are predicted to be no longer available on the market as Apple plans to retire this model from the market in the near future. With such a discouraging perspective, cell phone repair community should consider alternative solutions, such as copy iPhone LCDs to meet clients’ demands. But, for such an endeavor to take shape, the quality of after-market products has to be outstanding so they can successfully substitute original OEM parts.

Structure and technologies of LCD screens

As you know, in most smartphones, the touch screen’s structure consists of a digitizer touch screen and the glass lens. The digitizer’s performance, features, and functionality strongly depend on the material it is made of, such as film and glass.

TM LCD screen

Compared to OEM manufacturers that use In-cell technology to build LCD screens, after-market LCD manufacturers must rely on more economical methods and options due to the risks and costs involved. The G+F technology adopted by TM manufacturer is based on a sensor part built on a film layer. After it, the film layer is assembled with the glass lens. The result is a digitizer touch screen whose features are quite similar to the OEM’s. If you look carefully, you can even notice the film edge that could be easily removed.

LT LCD screen

To build the LCD screen, LT manufacturer uses the OGS technology. The glass lens and the touch sensor are embedded together and covered with a very thin lens to ensure the digitizer works properly and responds accurately to the commands from fingers. LT screens are very thin, to such an extent that, if we look carefully, we can see the diamond structures and the dots under the cover lens.

JDF LCD screen

In building the screen, JDF uses the “glass plus glass” technology (G+G). The digitizer touch sensor and the glass lens are assembled together. This structure is then covered with the cover lens. The result is the touch screen assembly. Although the thickness of the touch screen is wider, the main advantage of the G+G technology over other technologies (such as LT OGS described above) is that when the screen breaks, the digitizer continues to work properly. Thus, users don’t have to replace the full assembly, but the broken glass part. Both G+G and G+F technologies are similar from this point of view. However, the G+G allows lighter on the screen, so the display looks more transparent and brighter. New iPhone7 models use G+G OEM screens.

As we can see, both TM and JDF technologies have the advantage of a functional display in case of an accidental, unexpected screen break. However, when it comes to light reflection, the G+F structure does not excel, although is features a thinner profile of the screen. On the other hand, in JDF screens, the light crosses through the glass much better, and the display is brighter. So, the different manufacturing technologies directly influence the performance levels. Considering the contrast shown in the two images above, we can see the TM and LT technologies are the only ones that stretch the digitizer to the bottom. Thus, these two types of assemblies feature a smooth and soft surface in the proximity of the home button on the bottom. This distinctive property allows engineers to distinct LT and TM from others types of displays. With regards to color display performance, TM is the best. JDF displays are a bit yellowish, but they don’t have a negative impact on the overall experience in daily usage.

It depends on what type of replacement you prefer to buy depending on the iPhone replacement cost you can afford and other factors. If you think you don’t want to give away the true experience of using iPhone, then always get the OEM screen replacements and get best quality iPhone LCD display. Otherwise, you could look for good quality high copies as they do the same thing but are on the low end in terms of quality and durability. Here I’d like to recommend a reliable iPhone LCD screen digitizer replacement with all kinds of varieties grades. Our website offers kind notice, warm customer service as well as technical service.