Knowledge

How to inspect mobile glass film?



In order to detect the performance of the glass film, it is ensured that the products provided can continue to meet the needs of customers. Mobile phone glass glass film how to test?

 

one. Transmittance test

The inspector uses the transmissometer to judge. The higher the light transmittance, the better the product's filming effect. Visible light (i.e., visible light): is the part of the electromagnetic spectrum that can be perceived by the human eye, and the visible spectrum has no precise range; the wavelength of electromagnetic waves that most human eyes can sense is between 400 and 700 nanometers, but there are still some people who can perceive it. Electromagnetic waves with a wavelength of approximately 380 to 780 nanometers. Eyes with normal vision are most sensitive to electromagnetic waves with a wavelength of about 555 nanometers. This electromagnetic wave is in the green region of the optical spectrum.

 

two. Wear test

Using a pencil with a hardness corresponding to the glass film material, a uniform speed was applied to the surface of the glass film by 500 G gravity to test the scratch resistance of the glass film.

 

three. Hardness test (pencil scratches)

Using a pencil with a hardness corresponding to the glass film material, a uniform speed was applied to the surface of the glass film by 500 G gravity to test the scratch resistance of the glass film.

 

four. Falling ball test

A certain amount of steel balls hit the test article at a certain height to determine the firmness of the product. This test is applicable to a glass film made of tempered glass.


Fives. Pull test

The glass film was peeled from the test plate at a prescribed rate and 180 degrees, and its adhesion was measured, which may also be referred to as peel strength.


six. Oil-resistant (hydrophobic) test

The surface of the glass film was subjected to dripping or oiling to test its waterproof and oil-resistant performance.


Seven. Exhaust (taking rubber) performance test

According to the material and characteristics of the glass film, its adhesion effect was tested. A good exhaust effect of a glass film applied to the screen automatically vents and leaves substantially no air bubbles. The shorter the exhaust gas is, the better the effect is. In the dust-free environment, gently tear off the surface of the material from the film, and attach it to a black smooth glass test board to observe the speed and effect of the glue; tear off the protective film, repeat the film operation, observe the fit Effect, take the glue speed to uniform speed, until completely paste with the test board.


Eight. Touch sensitivity test

The normal use of the user after the detection of the screen glass film is not affected.


nine. Hardness Testing

For the glass film of glass, no damage is caused to the weak point of the glass film during operation. According to the model of the glass film according to the real machine model, size, arc and hardness of the contact surface for the simulation of the film, and then select the weak points on the tested glass film, such as: earpiece, HOME key, etc., open hole position, or At the four corners of the glass film, the tester pressed hard with a fingernail or finger and observed whether the glass film was broken, cracked, or cracked.


Ten, bending test

Record the length of the tempered film with a vernier caliper. Length bend test: tear off the release film of the tempered film, face the release film surface of the tempered film toward the tester, use a vernier caliper to trap the tempered film, and slowly bend the tempered film from both ends by hand. In the length of 2/3 of the tempered film, when the tempered film is observed, it is broken; length bending test: if the tempered film does not break in the previous step test, continue to bend, and observe whether the tempered film breaks at 1/2 of the length of the tempered film.