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 168-3906
製造零件編號BF3100-20B
HK$101.374
個 (以毎袋:100)
單位
CCFL White Yes 1 3 Dia. x 100mm - 3mm 100mm - - -
RS庫存編號 534-9978
製造零件編號BF3100-20B
HK$138.13
單位
CCFL White Yes 1 3 Dia. x 100mm - 3mm 100mm - - -
RS庫存編號 197-1242
製造零件編號EA LED36x28-A
HK$58.257
Each (In a Tray of 25)
單位
LED Amber - - - 36 x 28mm - - - - EA DOGS104x-A
RS庫存編號 197-1257
製造零件編號EA LED40x33-ERW
HK$92.89
Each (In a Tray of 20)
單位
LED Green, Red, White - - - 40 x 33mm - - - - EA DOGS104x-A
RS庫存編號 197-1243
製造零件編號EA LED36x28-A
HK$69.97
單位
LED Amber - - - 36 x 28mm - - - - EA DOGS104x-A
RS庫存編號 197-1227
製造零件編號EA LED39x41-A
HK$37.465
Each (In a Tray of 24)
單位
LED Amber - - - 39 x 41mm - - - - EA DOGS104x-A
RS庫存編號 534-9849
製造零件編號BF20292-24B
HK$190.23
單位
CCFL White Yes 1 2 Dia. x 292mm - 2mm 292mm - - -
RS庫存編號 534-9899
製造零件編號BF26188-20B
HK$163.68
單位
CCFL White Yes 1 2.6 Dia. x 188mm - 2.6mm 188mm - - -
RS庫存編號 758-8655
製造零件編號EA LED55x31-W
HK$126.21
單位
LED White - 40 - 31 x 55mm - - 31mm 55mm -
RS庫存編號 197-1230
製造零件編號EA LED39x41-W
HK$120.868
Each (In a Tray of 24)
單位
LED White - - - 39 x 41mm - - - - EA DOGS104x-A
RS庫存編號 197-1306
製造零件編號EA LED94X67-GR
HK$230.418
Each (In a Tray of 6)
單位
LED Red, Yellow-Green - - - 94 x 67mm - - - - EA DOGS104x-A
RS庫存編號 197-1231
製造零件編號EA LED39x41-W
HK$134.77
單位
LED White - - - 39 x 41mm - - - - EA DOGS104x-A
RS庫存編號 197-1283
製造零件編號EA LED94x40-W
HK$285.52
單位
LED White - - - 94 x 40mm - - - - EA DOGS104x-A
RS庫存編號 197-1244
製造零件編號EA LED36x28-ERW
HK$99.757
Each (In a Tray of 25)
單位
LED Green, Red, White - - - 36 x 28mm - - - - EA DOGS104x-A
RS庫存編號 168-3901
製造零件編號BF26214-24B
HK$125.128
個 (以毎袋:100)
單位
CCFL White Yes 1 2.6 Dia. x 214mm - 2.6mm 214mm - - -
RS庫存編號 197-1286
製造零件編號EA LED94x40-A
HK$147.60
單位
LED Amber - - - 94 x 40mm - - - - EA DOGS104x-A
RS庫存編號 168-3983
製造零件編號BF22160-24B
HK$96.049
個 (以毎袋:100)
單位
CCFL White - 2 2.2 Dia. x 160mm - 2.2mm 160mm - - -
RS庫存編號 534-9956
製造零件編號BF26318-20B
HK$161.35
單位
CCFL White Yes 1 2.6 Dia. x 318mm - 2.6mm 318mm - - -
RS庫存編號 534-9861
製造零件編號BF20325-24B
HK$161.35
單位
CCFL White Yes 1 2 Dia. x 325mm - 2mm 325mm - - -
RS庫存編號 168-3894
製造零件編號BF20218-24B
HK$96.831
個 (以毎袋:100)
單位
CCFL White Yes 1 2 Dia. x 218mm - 2mm 218mm - - -