which type of backlight can generate EMI

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designs
Posts: 32
Joined: Tue Feb 20, 2018 11:06 pm

which type of backlight can generate EMI

Post by designs » Mon Mar 05, 2018 9:00 pm

There are several types of backlights, which ones do not generate RF noise or feedback?

LCD_Designs
Posts: 262
Joined: Thu Feb 22, 2018 9:49 pm

Re: which type of backlight can generate EMI

Post by LCD_Designs » Tue Mar 06, 2018 4:39 pm

The two types of backlights that generate EMI or noise or interferance are:
EL (Electroluminescence) and CCFL.

Both of these have been phased out on monochrome displays such as: Segment, Character and Graphics. The main reason they have gone away is that they are AC driven which creates noise and have very short half-lifes compared to LED backlights.

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