Display Backlighting

Display backlighting is used to illuminate LCDs (liquid crystal displays), as well as for machine vision, image scanning and task lighting. Unlike frontlights, which illuminate from the front, backlights usually produce illumination from the sides or from the back of the screen.

Types of display backlighting

You can choose from display backlighting in a range of colours (including white, green and yellow) and levels of brightness, depending on the application you need it for. The two main types of display backlight are:

  • LED (light emitting diodes) backlighting – this uses 10 to 18 LEDs arranged in a uniform pattern and usually provides white light.
  • CCFL (cold cathode fluorescent) backlighting – this uses a single straight glass tube, which works much like a normal fluorescent lamp.

Applications of display backlighting

As LCD screens are unable to illuminate themselves, they require a backlight to provide the illumination and make the image on the screen viewable. Apart from being used in computer displays, LCD televisions and smartphones, backlights are also used in small devices such as watches and pocket calculators to improve readability in low-light conditions.


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Description Price Backlight Type Backlight Colours Variable Brightness Number of Pins CCFL Dimensions Dimensions CCFL Diameter CCFL Length Height Width Series
RS Stock No. 534-9962
Mfr. Part No.BF350-20B
kr 112,25
Each
Units
CCFL White Yes 1 3 Dia. x 50mm - 3mm 50mm - - -
RS Stock No. 534-9877
Mfr. Part No.BF22140-24B
kr 124,53
Each
Units
CCFL White Yes 1 2.2 Dia. x 140mm - 2.2mm 140mm - - -
RS Stock No. 168-3898
Mfr. Part No.BF22140-24B
kr 107,462
Each (In a Bag of 100)
Units
CCFL White Yes 1 2.2 Dia. x 140mm - 2.2mm 140mm - - -
RS Stock No. 797-2371
Mfr. Part No.BF20125-28B
kr 124,53
Each
Units
CCFL White - 2 2 Dia. x 125mm - 2mm 125mm - - -
RS Stock No. 168-3982
Mfr. Part No.BF20125-28B
kr 95,045
Each (In a Bag of 100)
Units
CCFL White - 2 2 Dia. x 125mm - 2mm 125mm - - -
RS Stock No. 171-1881
Mfr. Part No.EA LED55X31-RGB
kr 211,651
Each (In a Box of 25)
Units
LED Full Colour (RGB) - 40 - 31 x 55mm - - 31mm 55mm -
RS Stock No. 758-8664
Mfr. Part No.EA LED55x31-RGB
kr 256,23
Each
Units
LED Full Colour (RGB) - 40 - 31 x 55mm - - 31mm 55mm -
RS Stock No. 534-9978
Mfr. Part No.BF3100-20B
kr 117,75
Each
Units
CCFL White Yes 1 3 Dia. x 100mm - 3mm 100mm - - -
RS Stock No. 168-3906
Mfr. Part No.BF3100-20B
kr 86,353
Each (In a Bag of 100)
Units
CCFL White Yes 1 3 Dia. x 100mm - 3mm 100mm - - -
RS Stock No. 168-3905
Mfr. Part No.BF26318-20B
kr 95,836
Each (In a Bag of 100)
Units
CCFL White Yes 1 2.6 Dia. x 318mm - 2.6mm 318mm - - -
RS Stock No. 534-9956
Mfr. Part No.BF26318-20B
kr 137,59
Each
Units
CCFL White Yes 1 2.6 Dia. x 318mm - 2.6mm 318mm - - -
RS Stock No. 197-1255
Mfr. Part No.EA LED40x33-A
kr 69,19
Each
Units
LED Amber - - - - - - - - EA DOGS104x-A
RS Stock No. 197-1242
Mfr. Part No.EA LED36x28-A
kr 58,923
Each (In a Tray of 25)
Units
LED Amber - - - - - - - - EA DOGS104x-A
RS Stock No. 534-9906
Mfr. Part No.BF26214-24B
kr 133,40
Each
Units
CCFL White Yes 1 2.6 Dia. x 214mm - 2.6mm 214mm - - -
RS Stock No. 168-3983
Mfr. Part No.BF22160-24B
kr 77,343
Each (In a Bag of 100)
Units
CCFL White - 2 2.2 Dia. x 160mm - 2.2mm 160mm - - -
RS Stock No. 197-1271
Mfr. Part No.EA LED66x40-GR
kr 94,824
Each (In a Tray of 11)
Units
LED - - - - - - - - - EA DOGS104x-A
RS Stock No. 197-1288
Mfr. Part No.EA LED94x40-GR
kr 182,85
Each
Units
LED - - - - - - - - - EA DOGS104x-A
RS Stock No. 797-2375
Mfr. Part No.BF22160-24B
kr 126,02
Each
Units
CCFL White - 2 2.2 Dia. x 160mm - 2.2mm 160mm - - -
RS Stock No. 183-0830
Mfr. Part No.LTR24S3804YG
BrandLedtech
kr 92,62
Each
Units
LED Green - 8 - 23.3 x 48.7mm - - 23.3mm 48.7mm -
RS Stock No. 534-9827
Mfr. Part No.BF20218-24B
kr 124,53
Each
Units
CCFL White Yes 1 2 Dia. x 218mm - 2mm 218mm - - -
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The Electronic Assembly EA DOG series presents the ...
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Used for backlighting LCDs, machine vision, image scanning and task lighting. Low-power consumption. Diameters available as small as 2mm. Uniform light output.