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
RS庫存編號 534-9978
製造零件編號BF3100-20B
HK$101.83
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$74.62
個 (以毎袋:100)
單位
CCFL White Yes 1 3 Dia. x 100mm - 3mm 100mm - -
RS庫存編號 171-1881
製造零件編號EA LED55X31-RGB
HK$177.22
個 (以毎盒:25)
單位
LED Full Colour (RGB) - 40 - 31 x 55mm - - 31mm 55mm
RS庫存編號 534-9934
製造零件編號BF26250-24B
HK$118.04
單位
CCFL White Yes 1 2.6 Dia. x 250mm - 2.6mm 250mm - -
RS庫存編號 534-9861
製造零件編號BF20325-24B
HK$128.37
單位
CCFL White Yes 1 2 Dia. x 325mm - 2mm 325mm - -
RS庫存編號 168-3910
製造零件編號BF3380-20B
HK$104.48
個 (以毎袋:100)
單位
CCFL White Yes 1 3 Dia. x 380mm - 3mm 380mm - -
RS庫存編號 534-9849
製造零件編號BF20292-24B
HK$113.45
單位
CCFL White Yes 1 2 Dia. x 292mm - 2mm 292mm - -
RS庫存編號 171-1889
製造零件編號EA LED68X51-W
HK$193.64
個 (以毎盒:15)
單位
- - - - - - - - - -
RS庫存編號 534-9984
製造零件編號BF3228-21B
HK$105.91
單位
CCFL White Yes 1 3 Dia. x 228mm - 3mm 228mm - -
RS庫存編號 534-9940
製造零件編號BF26285-20B
HK$113.76
單位
CCFL White Yes 1 2.6 Dia. x 285mm - 2.6mm 285mm - -
RS庫存編號 534-9956
製造零件編號BF26318-20B
HK$125.85
單位
CCFL White Yes 1 2.6 Dia. x 318mm - 2.6mm 318mm - -
RS庫存編號 534-9899
製造零件編號BF26188-20B
HK$110.54
單位
CCFL White Yes 1 2.6 Dia. x 188mm - 2.6mm 188mm - -
RS庫存編號 168-3901
製造零件編號BF26214-24B
HK$125.378
個 (以毎袋:100)
單位
CCFL White Yes 1 2.6 Dia. x 214mm - 2.6mm 214mm - -
RS庫存編號 758-8664
製造零件編號EA LED55x31-RGB
HK$198.83
單位
LED Full Colour (RGB) - 40 - 31 x 55mm - - 31mm 55mm
RS庫存編號 534-9906
製造零件編號BF26214-24B
HK$112.57
單位
CCFL White Yes 1 2.6 Dia. x 214mm - 2.6mm 214mm - -
RS庫存編號 534-9877
製造零件編號BF22140-24B
HK$123.42
單位
CCFL White Yes 1 2.2 Dia. x 140mm - 2.2mm 140mm - -
RS庫存編號 758-8699
製造零件編號EA LED55x46-W
HK$144.04
單位
LED White - 40 - 46 x 55mm - - 46mm 55mm
RS庫存編號 183-0830
製造零件編號LTR24S3804YG
BrandLedtech
HK$51.19
單位
LED Green - 8 - 23.3 x 48.7mm - - 23.3mm 48.7mm
RS庫存編號 797-2371
製造零件編號BF20125-28B
HK$123.42
單位
CCFL White - 2 2 Dia. x 125mm - 2mm 125mm - -
RS庫存編號 168-3907
製造零件編號BF3228-21B
HK$102.767
個 (以毎袋:100)
單位
CCFL White Yes 1 3 Dia. x 228mm - 3mm 228mm - -