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. 534-9978
Mfr. Part No.BF3100-20B
HK$101.83
Each
units
CCFL White Yes 1 3 Dia. x 100mm - 3mm 100mm - - -
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. 534-9990
Mfr. Part No.BF3300-20B
HK$140.13
Each
units
CCFL White Yes 1 3 Dia. x 300mm - 3mm 300mm - - -
New
RS Stock No. 197-1267
Mfr. Part No.EA LED66x40-W
HK$158.964
Each (In a Tray of 11)
units
LED White - - - - - - - - EA DOGS104x-A
RS Stock No. 168-3901
Mfr. Part No.BF26214-24B
HK$125.378
Each (In a Bag of 100)
units
CCFL White Yes 1 2.6 Dia. x 214mm - 2.6mm 214mm - - -
RS Stock No. 168-3897
Mfr. Part No.BF20325-24B
HK$86.943
Each (In a Bag of 100)
units
CCFL White Yes 1 2 Dia. x 325mm - 2mm 325mm - - -
RS Stock No. 535-0007
Mfr. Part No.BF3380-20B
HK$140.21
Each
units
CCFL White Yes 1 3 Dia. x 380mm - 3mm 380mm - - -
New
RS Stock No. 197-1288
Mfr. Part No.EA LED94x40-GR
HK$190.70
Each
units
LED - - - - - - - - - EA DOGS104x-A
New
RS Stock No. 197-1233
Mfr. Part No.EA LED39x41-GR
HK$71.96
Each
units
LED - - - - - - - - - EA DOGS104x-A
RS Stock No. 168-3902
Mfr. Part No.BF26240-24B
HK$116.602
Each (In a Bag of 100)
units
CCFL White Yes 1 2.6 Dia. x 240mm - 2.6mm 240mm - - -
New
RS Stock No. 197-1268
Mfr. Part No.EA LED66x40-W
HK$185.21
Each
units
LED White - - - - - - - - EA DOGS104x-A
RS Stock No. 168-3894
Mfr. Part No.BF20218-24B
HK$95.86
Each (In a Bag of 100)
units
CCFL White Yes 1 2 Dia. x 218mm - 2mm 218mm - - -
New
RS Stock No. 197-1270
Mfr. Part No.EA LED66x40-A
HK$71.50
Each
units
LED Amber - - - - - - - - EA DOGS104x-A
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 - - -
RS Stock No. 168-3900
Mfr. Part No.BF26188-20B
HK$95.753
Each (In a Bag of 100)
units
CCFL White Yes 1 2.6 Dia. x 188mm - 2.6mm 188mm - - -
RS Stock No. 201-0368
Mfr. Part No.AC 821
HK$91.41
Each
units
- - - - - - - - - - -
New
RS Stock No. 197-1305
Mfr. Part No.EA LED94X67-A
HK$218.62
Each
units
LED Amber - - - - - - - - EA DOGS104x-A
RS Stock No. 168-3895
Mfr. Part No.BF20226-24B
HK$116.602
Each (In a Bag of 100)
units
CCFL White Yes 1 2 Dia. x 226mm - 2mm 226mm - - -
RS Stock No. 171-1889
Mfr. Part No.EA LED68X51-W
HK$193.64
Each (In a Box of 15)
units
LED White - 40 - 51 x 68mm - - 51mm 68mm -
RS Stock No. 168-3903
Mfr. Part No.BF26250-24B
HK$116.602
Each (In a Bag of 100)
units
CCFL White Yes 1 2.6 Dia. x 250mm - 2.6mm 250mm - - -
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