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庫存編號 534-9978
製造零件編號BF3100-20B
HK$120.57
單位
CCFL White Yes 1 3 Dia. x 100mm - 3mm 100mm - - -
RS庫存編號 168-3906
製造零件編號BF3100-20B
HK$88.487
個 (以毎袋:100)
單位
CCFL White Yes 1 3 Dia. x 100mm - 3mm 100mm - - -
RS庫存編號 534-9877
製造零件編號BF22140-24B
HK$127.63
單位
CCFL White Yes 1 2.2 Dia. x 140mm - 2.2mm 140mm - - -
RS庫存編號 534-9883
製造零件編號BF22258-25B
HK$130.84
單位
CCFL White Yes 1 2.2 Dia. x 258mm - 2.2mm 258mm - - -
RS庫存編號 168-3899
製造零件編號BF22258-25B
HK$97.747
個 (以毎袋:100)
單位
CCFL White Yes 1 2.2 Dia. x 258mm - 2.2mm 258mm - - -
RS庫存編號 197-1242
製造零件編號EA LED36x28-A
HK$50.207
Each (In a Tray of 25)
單位
LED Amber - - - - - - - - EA DOGS104x-A
RS庫存編號 758-8655
製造零件編號EA LED55x31-W
HK$110.17
單位
LED White - 40 - 31 x 55mm - - 31mm 55mm -
RS庫存編號 534-9928
製造零件編號BF26240-24B
HK$154.07
單位
CCFL White Yes 1 2.6 Dia. x 240mm - 2.6mm 240mm - - -
RS庫存編號 168-3902
製造零件編號BF26240-24B
HK$90.155
個 (以毎袋:100)
單位
CCFL White Yes 1 2.6 Dia. x 240mm - 2.6mm 240mm - - -
RS庫存編號 534-9984
製造零件編號BF3228-21B
HK$126.74
單位
CCFL White Yes 1 3 Dia. x 228mm - 3mm 228mm - - -
RS庫存編號 197-1270
製造零件編號EA LED66x40-A
HK$60.08
單位
LED Amber - - - - - - - - EA DOGS104x-A
RS庫存編號 758-8734
製造零件編號EA LED68x51-W
HK$225.71
單位
LED White - 40 - 51 x 68mm - - 51mm 68mm -
RS庫存編號 534-9934
製造零件編號BF26250-24B
HK$133.61
單位
CCFL White Yes 1 2.6 Dia. x 250mm - 2.6mm 250mm - - -
RS庫存編號 168-3900
製造零件編號BF26188-20B
HK$95.007
個 (以毎袋:100)
單位
CCFL White Yes 1 2.6 Dia. x 188mm - 2.6mm 188mm - - -
RS庫存編號 197-1268
製造零件編號EA LED66x40-W
HK$157.59
單位
LED White - - - - - - - - EA DOGS104x-A
RS庫存編號 197-1243
製造零件編號EA LED36x28-A
HK$61.08
單位
LED Amber - - - - - - - - EA DOGS104x-A
RS庫存編號 183-0830
製造零件編號LTR24S3804YG
BrandLedtech
HK$51.73
單位
LED Green - 8 - 23.3 x 48.7mm - - 23.3mm 48.7mm -
RS庫存編號 534-9899
製造零件編號BF26188-20B
HK$127.16
單位
CCFL White Yes 1 2.6 Dia. x 188mm - 2.6mm 188mm - - -
RS庫存編號 758-8658
製造零件編號EA LED55x31-G
HK$43.63
單位
LED Yellow-Green - 40 - 31 x 55mm - - 31mm 55mm -
RS庫存編號 168-3894
製造零件編號BF20218-24B
HK$95.86
個 (以毎袋:100)
單位
CCFL White Yes 1 2 Dia. x 218mm - 2mm 218mm - - -