The phone screen is broken, don't be in a hurry to change it first! Cathy tells you how not to be fooled and spend more money

The phone screen is broken, don't be in a hurry to change it first! Cathy tells you how not to be fooled and spend more money

 

  

As the most easily broken part of the mobile phone, the mobile phone screen is often broken by accident. But some people's mobile phone screen is broken, but they can continue to use it, and some people's screen doesn't look broken, but they can't touch it, what is going on? Let me give you a popular science, the current mobile phone screen is divided into an inner screen and an external screen, and the price of the two is very different.

 

 

 

Generally speaking, the inner screen is responsible for display and touch, which is why it is so expensive to replace the inner screen. The outer screen is a simple glass cover, which plays a role in protecting the outer screen, and the inner screen integrates display and touch functions, referred to as the screen assembly. Because the manufacturing process of the inner screen is much more complicated, the price of repairing the inner screen will be relatively expensive.

 

 

 

Mobile phone screen deconstruction

 

Today's smartphones generally consist of four layers, from top to bottom: cover glass, touch sensor, front panel, and back panel.

 

cover glass to help protect devices such as mobile phone touch sensors;

 

Touch sensors, as the name suggests, are created to help mobile phone users touch the mobile phone screen operation;

 

the front panel, where optical filters can be installed to generate a variety of images that appear on the phone screen;

 

The backplane, which plays a very important role in the screen of a mobile phone, has millions of thin-film transistors on it;

 

 

How to tell if the inner and outer screens are damaged?

 

When we use a mobile phone, the screen unfortunately gets damaged, and generally speaking, two things happen. One is that the outer screen is damaged, and the other is that the inner screen and the outer screen are damaged. In order to avoid being cheated, we must know the condition of our mobile phone, whether the external screen is damaged, or the internal and external screens are damaged.

 

(1) Touch: When the mobile phone is touched, the screen is not responsive;

 

(2) Observation: We can observe with the naked eye to find out whether the mobile phone screen has image display color blocks, water ripples, etc.;

 

In other words, if the touch is not sensitive and the screen does not display an image, the external screen is damaged; And there is no problem with touch, the screen has problems such as color blocks and water ripples, which is that the inner screen is damaged.

 

(3) The last method: use strong light to illuminate the screen, and there is still a difference between the outer screen and the inner screen of the mobile phone. The difference between the inner and outer screens can be distinguished in bright light,If there are only obvious cracks on the outer surface,That is the outer screen is broken,If there are two layers of cracks inside and outside,It means that the inner and outer screens are cracked。