The iPhone that changes the screen is prone to color bias. Do you know why?
Xiaobian has always missed the Nokia mobile phone that could smash walnuts at that time. Now the big screen mobile phone has no such treatment. If you don't pay attention to falling on the ground, you may cause the screen to damage the screen. There are two channels for replacing the mobile phone screen: manufacturers' after -sales service centers and non -manufacturers after -sales maintenance stores. Manufacturer's after -sales service center can basically ensure the replacement screen quality. The disadvantage is that the maintenance cost is high and the maintenance stores are not timely; The quality of the screen used is uneven, and the cost of accessories is very different.
The screens on the mobile phone accessories market are generally divided into three types: original screen, rear pressure screen and cottage screen.
First. Original screen
The quality of the original screen is not essentially different from the original screen, but the source of the screen is different. The original screen on the market comes from the manufacturer's maintenance channels and the external sales of foundries. There are also some disassembling from the new machine or second -hand mobile phone. The screen price is not much different from the supply of manufacturers, but because it is not limited by the manufacturer's after -sales price system, the maintenance cost is cheaper than the after -sales service center.
Second. Rear pressure screen
There is a screen on the market called a rear -press screen, which comes from the screen that is broken and replaced with the screen screen of the user screen. Nowadays, smart phones are basically a full -fit screen. For example, there are four layers of screens used by iPhone6: outer screen glass cover, polarizing, LCD, and backlight. Where is the touch screen? From iPhone5, Apple has integrated with LCD. If the mobile phone is only damaged by the external screen glass, the touch and display are normal, the workshop on the market will separate the outer layer of the damaged screen and re -press the new external screen glass. The screen of the board is the rear pressure screen. The processing cost of the rear pressure screen is about 20-30 yuan to nearly 100 yuan. The quality and price are different from the original screen. The outer screen of the original screen uses Corning Gorilla Glass. The hardness of the glass is extremely high. ; The back screen is made of ordinary glass, and the screen is easily scratched.
The workshops that press the screen after processing are limited by materials and production conditions. There are generally problems such as display color difference or darker display color in the post-press screen. There are many reasons for the color difference: the glass used for making the outer screen is not pure enough, the polarizing layer material problem,There is also a shadow -free adhesive material for external screens and inner screen stickers that will cause color differences in screen display. The inner and outer adhesives used by the screen workshop will also be used for a period of time. Causes the adhesive to discolor. Some back screens may not be dealt with due to the dust removal of the processing environment, and dust in the inner and outer layers enter.
Another common problem of the rear pressure screen is that the bracket is easy to fall off. Because the rear pressure screen needs to remove the brackets on the original screen when mobilizing the external screen and liquid crystal. The adhesive strength is greatly weaker than the original screen. The long time or the bumps of the outer frame can easily cause the bracket to fall off, causing the screen to roll up or the screen fuselage is completely separated.
Third. Cottage screen
The cottage culture in the past ten years has always been accompanied by the mobile phone industry. Some small screen manufacturers have also produced compatible mobile phone accessories. However, the screen quality control produced by these small factories is extremely poor. The raw materials used are inferior. Compared with the original screen or rear pressure screen, the service life of most cottage screens is far worse than the back screen. Cottage screens also generally have the cold and super bright screen display color, insufficient screen resolution, and granularity.