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. 168-3906
Mfr. Part No.BF3100-20B
HK$74.62
Each (In a Bag of 100)
units
CCFL White Yes 1 3 Dia. x 100mm - 3mm 100mm - - -
RS Stock No. 534-9978
Mfr. Part No.BF3100-20B
HK$101.83
Each
units
CCFL White Yes 1 3 Dia. x 100mm - 3mm 100mm - - -
RS Stock No. 534-9899
Mfr. Part No.BF26188-20B
HK$127.16
Each
units
CCFL White Yes 1 2.6 Dia. x 188mm - 2.6mm 188mm - - -
RS Stock No. 168-3907
Mfr. Part No.BF3228-21B
HK$85.233
Each (In a Bag of 100)
units
CCFL White Yes 1 3 Dia. x 228mm - 3mm 228mm - - -
New
RS Stock No. 197-1285
Mfr. Part No.EA LED94x40-A
HK$123.744
Each (In a Tray of 7)
units
LED Amber - - - - - - - - EA DOGS104x-A
New
RS Stock No. 197-1246
Mfr. Part No.EA LED36x28-GR
HK$60.713
Each (In a Tray of 25)
units
LED - - - - - - - - - EA DOGS104x-A
New
RS Stock No. 197-1230
Mfr. Part No.EA LED39x41-W
HK$96.897
Each (In a Tray of 24)
units
LED White - - - - - - - - EA DOGS104x-A
New
RS Stock No. 197-1304
Mfr. Part No.EA LED94X67-A
HK$206.533
Each (In a Tray of 6)
units
LED Amber - - - - - - - - EA DOGS104x-A
New
RS Stock No. 197-1227
Mfr. Part No.EA LED39x41-A
HK$34.765
Each (In a Tray of 24)
units
LED Amber - - - - - - - - EA DOGS104x-A
New
RS Stock No. 197-1303
Mfr. Part No.EA LED94X67-W
HK$404.71
Each
units
LED White - - - - - - - - EA DOGS104x-A
RS Stock No. 797-2371
Mfr. Part No.BF20125-28B
HK$127.16
Each
units
CCFL White - 2 2 Dia. x 125mm - 2mm 125mm - - -
RS Stock No. 168-3983
Mfr. Part No.BF22160-24B
HK$78.76
Each (In a Bag of 100)
units
CCFL White - 2 2.2 Dia. x 160mm - 2.2mm 160mm - - -
New
RS Stock No. 197-1231
Mfr. Part No.EA LED39x41-W
HK$118.62
Each
units
LED White - - - - - - - - EA DOGS104x-A
RS Stock No. 168-3903
Mfr. Part No.BF26250-24B
HK$86.201
Each (In a Bag of 100)
units
CCFL White Yes 1 2.6 Dia. x 250mm - 2.6mm 250mm - - -
RS Stock No. 171-1881
Mfr. Part No.EA LED55X31-RGB
HK$177.22
Each (In a Box of 25)
units
LED Full Colour (RGB) - 40 - 31 x 55mm - - 31mm 55mm -
RS Stock No. 534-9906
Mfr. Part No.BF26214-24B
HK$137.36
Each
units
CCFL White Yes 1 2.6 Dia. x 214mm - 2.6mm 214mm - - -
RS Stock No. 534-9940
Mfr. Part No.BF26285-20B
HK$125.73
Each
units
CCFL White Yes 1 2.6 Dia. x 285mm - 2.6mm 285mm - - -
RS Stock No. 758-8655
Mfr. Part No.EA LED55x31-W
HK$110.17
Each
units
LED White - 40 - 31 x 55mm - - 31mm 55mm -
New
RS Stock No. 197-1286
Mfr. Part No.EA LED94x40-A
HK$141.04
Each
units
LED Amber - - - - - - - - EA DOGS104x-A
RS Stock No. 201-0368
Mfr. Part No.AC 821
HK$91.41
Each
units
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