| Backligh Techinology |
EL |
CCFL |
LED |
OLED |
| Life time |
3,000~5,000hrs |
5,000~10,000hrs |
50,000hrs |
10,000hrs |
| Advantage |
Light source uniform, thin, impact resistance |
high brightnessvast color range |
high brightnessvast color range |
Light source uniform, thin, impact resistance |
| disadvantage |
short lifetimehigh voltage, disturbed easily |
Dimming is not easy Driving voltage highBe mixed with light from the |
RGB LED light from the need to mixSometimes be necessary for cooling modules |
Shorter life expectancyColored light-emitting materials, color decay rate varies |
| Luminescence method |
Direct type Luminescence/td>
| Edge type and Direct type Luminescence can be |
Edge type and Direct type Luminescence can be |
Direct type Luminescence |
| Opoerate voltage |
70~100V |
500~1,000V |
3.8~4.5V |
2~10V |
| Frequency |
400~700Hz |
20KHz |
- |
- |
| operate current |
0.1~0.25mA/cm2 |
4~6mA |
Determined by the number depending on LED |
depending on the luminosity may be |
| capitor value |
100~1,000pF/cm2 |
- |
- |
- |
| Operate temperature |
-30~50 |
10~50 |
-20~70 |
-30~70 |
| Storage moisture |
<70%RH |
- |
- |
<95%RH |
| Brighness |
- |
3,000~35,000cd/m2 |
1,700~5,000mcd |
1,000~5,000 cd/m2 |
| Power dissipation |
- |
1~4W(CCFL/Per) |
Determined by the number depending on LED |
Light-emitting area is determined depending on the size |
| Color |
Green, blue-green, orange light, etc. |
White |
Red, green, blue, white, etc. |
Red, green, blue, white, etc. |
| componet |
DC-AC converter needed |
Be DC-AC converter, series-limiting resistor 100K-200K |
External 5V power supply required to limit |
- |
|
