| LCD backlight serve as the illumination source
for LCD. LCD backlight frequently employ fluorescent lamps. Fluorescent
lamp consists of a phosphor coated glass cylinder with cathodes
at each end.
Carry light source to offer LCD light source of panel. Mainly by
light source, lead all board, optics made up of diaphragm, plastic
frame,etc.. Carry light source have luminance to be high, longe-lived
giving out light characteristic such as being even. Have EL, CCFL,
LED three carry light source type mainly at present , distribute
position with divide into and incline person who carry and go to
type direct in accordance with light source.
To brighter, more light constantly, thin direction develop with
LCD mould group, incline person who carry CCFL type carry light
source become at present carrying light source mainstream of development.
As regards range of application, EL, used in light size, monochromatic
light( getting green, red) mainly by LED. Have white light( panchromatic)
EL and LCD carry light source come out successively too recently.
But because luminance use than dark their for 4 following little
size liquid crystal show basically.
For instance: Cell-phone, PDA, game machine,etc.. Getting panchromatic,
large size luminance carry light source, mainstream to make the
light source with CCFL still now, And riper through the development
technological craft for many years, the trusting is high, Performance
is steady. TFT LCDs generally use CCFL for the large-and-middle-scale
size( 19-3 inches) now. There are itses concrete product for civilian
use: Liquid crystal TV( 20" - 30"); Liquid crystal computer
display( 14" - 10"); Portable computer display( 8"
- 14"); Portable DVD player( 5"- 9); Automobile, train,,
plane TV, GPS show ( 3" - 5") year; Lottery game machine(
3" - 5"); Portable TV( 3" - 5"); Children person
who study, palmtop computer, game machine( 3" - 5"); Instrument,
industry of OA, show ( 5" - 10"); Videophone( 5"
- 10")
PART NUMBER
DIAMETER(mm):1.8-2.3
LENGTH(mm) :50-280
LAMP VOLTAGE VL(Vrms):210-850
LAMPWATTS(@5mArms) :0.2-3.0
STARTING VOLTAGE(Typ.Vrms):350-1180
INTENSITY(Cd./m2) :32000-38000
Life Hrs. (Typ.) :15000
|
