Tuesday, October 16, 2018

Luckily, the LG UltraWide did not have Backlight Bleeding

A biggest fear of buying a new, expensive monitor is backlight bleeding. The way LCD monitors work is that the monitor screen is lighted from the back. There is a panel in front of the backlight that blocks the emitted light, thus creating different colour per pixel. A complete blockage produces the black colour. Normally, around the bezel, the panel have issue blocking the light. This is due to the pressure from the bezel itself or pressure created when you are pressing the screen too hard when moving the monitor. This causes the panel to fail to block the light completely and thus, it bleeds around the panel.

Fortunately, this LG 38” have good manufacturing process or a very good QC. 4 days after using it, I decided to test it for backlight bleed.

1/ Testing is a simple procedure of loading up a full screen black wallpaper.. or you can just go to this website and click a link to load up a black screen. 

2/ switch off your room light so tbe room is in darkness. This is so its easier for you to spot any inconsistency in the screen. 

3/ The result? Judge for yourself (the middle white dot are actually the mouse cursor):

I set the monitor brightness to 40, which is what I am using most of the time (for reading)

Surprisingly, though, the MacBook Pro 2017 from work, with a Retina display, demonstrate some degree of backlight bleed. See top left, bottom left and top right? There are traces of light that seems to bleed out of the corner, an indication that the front panel failed to block the white light completely. Hmmmm....

Setting Brightness to maximum.. and still looks ok! Phew!

I am pretty relieved that my monitor is free from backlight bleed... so far. I need to handle the screen tenderly. No pressure especially when moving the screen!

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