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. 168-3905
Mfr. Part No.BF26318-20B
$18.17
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
$28.15
Each
units
CCFL White Yes 1 2.6 Dia. x 318mm - 2.6mm 318mm - - -
RS Stock No. 534-9877
Mfr. Part No.BF22140-24B
$25.17
Each
units
CCFL White Yes 1 2.2 Dia. x 140mm - 2.2mm 140mm - - -
RS Stock No. 168-3898
Mfr. Part No.BF22140-24B
$22.077
Each (In a Bag of 100)
units
CCFL White Yes 1 2.2 Dia. x 140mm - 2.2mm 140mm - - -
RS Stock No. 171-1881
Mfr. Part No.EA LED55X31-RGB
$34.826
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
$42.16
Each
units
LED Full Colour (RGB) - 40 - 31 x 55mm - - 31mm 55mm -
RS Stock No. 797-2375
Mfr. Part No.BF22160-24B
$25.18
Each
units
CCFL White - 2 2.2 Dia. x 160mm - 2.2mm 160mm - - -
RS Stock No. 758-8655
Mfr. Part No.EA LED55x31-W
$21.73
Each
units
LED White - 40 - 31 x 55mm - - 31mm 55mm -
RS Stock No. 168-3983
Mfr. Part No.BF22160-24B
$15.644
Each (In a Bag of 100)
units
CCFL White - 2 2.2 Dia. x 160mm - 2.2mm 160mm - - -
RS Stock No. 201-0368
Mfr. Part No.AC 821
$18.19
Each
units
- - - - - - - - - - -
RS Stock No. 758-8699
Mfr. Part No.EA LED55x46-W
$31.58
Each
units
LED White - 40 - 46 x 55mm - - 46mm 55mm -
RS Stock No. 168-3899
Mfr. Part No.BF22258-25B
$19.32
Each (In a Bag of 100)
units
CCFL White Yes 1 2.2 Dia. x 258mm - 2.2mm 258mm - - -
RS Stock No. 534-9883
Mfr. Part No.BF22258-25B
$25.72
Each
units
CCFL White Yes 1 2.2 Dia. x 258mm - 2.2mm 258mm - - -
RS Stock No. 797-2371
Mfr. Part No.BF20125-28B
$25.17
Each
units
CCFL White - 2 2 Dia. x 125mm - 2mm 125mm - - -
New
RS Stock No. 197-1267
Mfr. Part No.EA LED66x40-W
$32.733
Each (In a Tray of 11)
units
LED White - - - - - - - - EA DOGS104x-A
RS Stock No. 534-9906
Mfr. Part No.BF26214-24B
$28.15
Each
units
CCFL White Yes 1 2.6 Dia. x 214mm - 2.6mm 214mm - - -
New
RS Stock No. 197-1243
Mfr. Part No.EA LED36x28-A
$14.20
Each
units
LED Amber - - - - - - - - EA DOGS104x-A
New
RS Stock No. 197-1306
Mfr. Part No.EA LED94X67-GR
$45.327
Each (In a Tray of 6)
units
LED - - - - - - - - - EA DOGS104x-A
RS Stock No. 168-3910
Mfr. Part No.BF3380-20B
$20.537
Each (In a Bag of 100)
units
CCFL White Yes 1 3 Dia. x 380mm - 3mm 380mm - - -
New
RS Stock No. 197-1231
Mfr. Part No.EA LED39x41-W
$24.31
Each
units
LED White - - - - - - - - EA DOGS104x-A
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