The knowledge of the phone screen you must know
The first layer of the phone screen, generally called front glass, this layer of transparent material is able to resist the impact of external forces and direct contact with the finger. We often hear the gorilla Corning glass, sapphire glass that is this layer of material. There will also be some special techniques on this layer, such as oil thinning coating, oil coating to protect against fingerprints, making daily oil and grease pollution easier to wipe. Process all need to increase manufacturing cost.
A mobile phone screen front glass replacement, cheap price.
Mobile phone screen second layer, optical glue, used to bond the upper and lower layers of high permeability flexible adhesive layer, also has a certain buffer effect.
The middle of the picture is optical glue, the upper and lower pet film for anti-pollution protection, both sides are integrated touch layer glass
The third layer of mobile phone screen, polarizer, the function is to let the light of the LCD screen to choose through, show the image. If the lack of this polarizer, we can only see a white, without any images. Some hands-on ability of friends take this polaroid out onto the glasses and make it a secret screen that only you can see.
Polarizer is very thin and usually comes with a sticky, directly attached to the liquid crystal layer
Mobile phone screen fourth layer, capacitive touch layer, this layer is responsive to finger touch. There are capacitive monitoring points on the touch layer. To achieve multi-touch, rely on the capacitor to increase the monitoring point of the electrode, simply put, is the mobile phone screen block, in each area set up a group of mutual capacitance modules are independent work, so the capacitive screen can be independent Detects the touch of each region, after processing, simply achieve multi-touch. Now the production of products can already achieve 10-point touch.
Mobile phone screen fifth layer, the liquid crystal layer, from the traditional planar liquid crystal to the present flexible screen, the most core display technology is focused on this level. This layer of technology is not described, and now the main application of several: slcd, oled, ips, ASV, nova, the major manufacturers are based on these technologies to develop applications. That flexible oled screen is now the most popular, characterized by self-luminous, printed flexible layer.
LCD screen and flex cable joint, the upper layer is the touch layer
Mobile phone screen sixth floor, Backlit layer, responsible for the light to the LCD layer image can be presented. Backlit layer include the light led, light guide film, reflective plate.
Not completely separated from the backlight layer, see the white part is the light guide, shiny led hidden in the black junction with the screen
Mobile phone screen special layer, the pressure sensor layer, since the beginning of the use of iphone 6s, acting as the sensor screen pressure.The press force is perceived, so as to make light, tap and press the three-dimensional action feedback. This allows the touch interaction from the long press “time” dimension extends to the weight of the “strength” dimension, for the human-computer interaction to open up a new space.
Pressure sensitive layer, attached to the steel, the separation will be scrapped
After we’ve seen all of the features of the phone’s screen, we’ll look at a few common techniques for screen repair.
Mobile phone screen broken screen repair: when the surface cover broken when the master through the hot processing, 80 degrees of high temperature, in a dedicated workstations to soften the second layer of optical glue; with nickel wire horizontal separation broken broken cover; remove the broken cover And ota optical glue, covered with a new ota optical glue and a new cover; the use of mechanical press, vacuum chamber to remove the ota glue the residual small bubbles; mobile phone screen total finished repair. Repair the quality of the cover is not necessarily compared with the original factory, the quality and difficult to use the naked eye to identify, completely look at the repair business people. Repair prices are usually between tens of dollars to more than 300 RMB, the price depends mainly on the repair process caused by the risk of secondary damage.
Vacuum adsorption separation station
When the display screen and touch failure are displayed, the maintenance business will re-bond the cable and display layer and touch layer through the high magnification display instrument and the numerical control pressure device.
Backlight replacement, when the phone screen for a long time after the use of light dim and so the situation will be considered when the replacement of the backlight. This repair is relatively simple, tear up the final backlight layer, electric iron heating separation backlight power point, put on a new backlight, and then use the soldering iron fast heating power connection point.
The last is a small workshop or factory usually recycling waste mobile phone screen assembly to replace the liquid crystal layer to produce the so-called high copy screen, this type of screen assembly color difference, the display is poor, the only desirable is cheap, resulting in a large number of market circulation, so IKEMI recommend the choice of suppliers or maintenance of mobile phone screen, you should choose a reliable supplier or repair shop better.