How to test a mobile phone display screen
By Mia Wang 2019-05-30 1434 0
Mobile phone screen According to the standard of professional display equipment to test, then it is necessary to test, brightness, contrast, color area, color registration ... But for consumers, these indicator numbers are not so meaningful. In the absence of professional equipment for testing, how to detect the phone screen? We found some simple ways.
First trick: Screen All Black, block the light to see leakage
Turn the screen brightness to the brightest, and the screen shows All Black. Then find a darker place to see if the screen four edge leakage is obvious, LCD screen leakage is inevitable, more or less but too obvious small lanterns can not be selected.
Second trick: Look at the brightness in the sun
The maximum use of the ultra-high brightness of the phone screen is to allow you to see the screen in daylight, which is a basic requirement. The previous mobile phone can not, now most mobile phones are doing well, the test method is in the strong sunshine at noon, let the screen display a more vivid color, more content of the picture, to see if you can see, whether the color is still bright. High brightness contrast is a bit cheaper in this test, which is also the most commonly used scene on a daily basis.
The third trick: level 256 grayscale color to see the transition
Our current mobile screen is basically 8-bit, that is, red, blue, green have 256 levels, black and white also have 256 levels, the more can be displayed correctly, the more delicate the color transition, there will be no color stripes. And it's not going to die black. White throw gray scale.
The test method is to use the screen tester, find the 256 level of grayscale map, to see if each one is clearly recognizable, each layer is a bit difficult to see, but the continuous 10 layers of eight layers can not be distinguished, this screen is not good.
Lesson IV: Pure color screen to see bad points and uniformity
This is relatively simple, with a screen tester into pure white, red, blue, green, to see if there are black spots (TN screen will be white dots), to see if the color is uniform, there is no deep a shallow piece of the problem. If there are obvious shades of difference, this screen is not good.
If your phone passes through these steps above, it means your phone screen is OK and can meet your basic requirements. Xiao Miao teach you how to detect the phone screen to introduce you here,
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