After assembled the backlight unit. I stuck with the color problems. Because this monitor used so much of 5050 strip. I used all 4 rolls of 5m RGB LEDs 5050 and found that last roll has differ color compare to Roll 1-3 which led me to do some passive corrections.

I found that problematic roll have sightly lower in blue output so I bypass the resistor of blue channel in every strip on 4th roll and bypass green and blue channel on Roll 1-3. So the color will be nearly match. This is not perfect solution but it help me do better than nothing. Absolutely time consuming and frustration.

In the photo you may see some banding because I just test drive it with cheap RGB IR remote. PWM driven.

Real assembly will be use with Arduino drive at 5000Hz+ to produce Flicker-Free BLU.

It may seem to have no problem at all with color after corrections, If I bring down exposure it should be easier for you to spot. But I just shot this exposure right away to get rid of PWM banding. Easy for your eyes folk!

I suggest to double check the batch of these kind of LED before begin to assemble the strip on BLU panel.

For who don't to be hassle with this kind of problem. I think WS2812b Digital LED which drive at pixel level of each LED will do much better job but with more budget to spend on strip. 5050 WS2812b RGB with 144LEDs per meter will do great job on brightness level and uniformity, But It's to much to be something to dream of, that cost much as buying a good sRGB monitor. Nevertheless, in the future I may doing it. It will be fantastic to imagine with each pixel being control individually. Yes, Local dimming RGB backlit display. That's my wish for next project.

Absolutely hard to QC this backlight. This shows me completely of why the RGB-LED backlit monitor is so expensive.