Visible especially when it is a black image on the screen or on the start of the MacBook, the white background light that usually appears in the corners can be upsetting for users. Especially when the intensity is high and becomes very visible. If we take into account the prices not to be neglected MacBook Pro 2017 cu Touch Bar, this bleeding screen should have been excluded by Apple.
Many users who bought a MacBook at prices over $ 2000 complained about this problem either immediately after purchase or for some time. White light "blood" background visible on Black screen It is not upset when we have on the screen an image in light colors. When watching a more "dark" movie or we make a graphic editing that involves images in dark colors, this backlight bleed It's a disaster.
Even if it is upset, this strange light should not worry you very much. It is not a actual malfunction, but a feature of the type of display used on Apple on MacBook Pro 2017/2016 of 13-inch and 15-inch.
What is backlight bleeding and how this problem can be solved
This problem is typical screens with LED technology. Normally when a certain image on the screen is displayed, the rear LED panel must completely block the light so as not to enter the visible area of the screen. Unfortunately, the technology and materials from which these LED panels are made that are the basis of the display often allow light "bleeding". Very few LED displays manage to block 100% background light.
To test this ability to lock the background light, you can put a totally black image on the screen. If the black is not perfect, and in the corners (most of the time) light escapes are observed, then your screen is facing this problem.
Often this light is not disturbing to the eyes, but there are many cases where the light is overly strong and creates problems to users.
The bad news is like There is no software solution to solve this problem. Solving the "bleeding" of light on the screen is most often resolved with the complete change of the displayto the or by applying a Black electric bands around the LED panel. The best way to "repair" an LED display with this problem is its total replacement. But this does not guarantee that the next one does not "suffer" from backlighting over time.
MacBook owners with this problem can be addressed to authorized services and shops where they purchased devices. This problem is covered by the product warranty.