G121SN01V2 查看數據表（PDF） - AU Optronics
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G121SN01V2 Datasheet PDF : 26 Pages
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Product Specification
AU OPTRONICS CORPORATION
G121SN01 V2
5.2 Backlight Unit
5.2.1 Parameter guideline for CCFL
Following characteristics are measured under a stable condition using an inverter at 25℃ (Room Temperature):
Symbol
Parameter
IRCFL CCFL operation range
FCFL
ViCFL
0oC)
(reference)
ViCFL
(25oC)
(reference)
CCFL Frequency
CCFL Ignition Voltage
CCFL Ignition Voltage
PCFL
CCFL Power consumption
(inverter excluded)
Lamp Life
Min.
3
40
-
-
3.6
-
Typ.
6
55
-
-
6.5
50,000
Max.
6.5
65
1,270
970
7.3
-
Unit
[mA]
rms
[KHz]
Remark
(Ta=25oC) Note 1, 2
(Ta=25oC) Note 3
[Volt]
rms
(Ta= 0oC)
[Volt]
rms
(Ta=25oC)
[Watt] (Ta=25oC) Note 4
Hrs
(Ta=25oC) Note 2
IRCFL = 6mA
Note 1: IRCFL is defined as the return current of an inverter. (See Figure 1)
+
Inverter
-
Hi
Lamp
mA
Lo
(Figure 1: Measurement of return current)
A stable IRCFL is a current without flicker or biasing waveform provided by inverter that ensures the
backlight perform to its specification. The ideal sine waveform should be symmetric in positive and negative
polarities and the asymmetry rate of the inverter waveform should be below 10%.
It is recommended to use the inverter with detection circuit to avoid overvoltage, overcurrent, or
mismatching waveform. The purpose is to avoid current flow into only one of the lamps when the other one
is not in operation.
Note 2: The definition of lamp life means when any of following conditions happen:
a) Luminance falls to 50% or less of the initial value.
b) Normal lighting is no more available (flickering, pink lighting, no lighting, etc.)
c) Lamp voltage or lighting start voltage exceeds the specified value.
Note 3: CCFL frequency should be carefully determined to avoid interference between inverter and TFT LCD.
Higher frequency will induce higher leakage current and further impact lamp life.
Note 4: Calculator value for reference (IRCFLxVCFLx2=PCFL).
Note 5: The display is with dual lamp design, and the CCFL current in above table refers to each lamp
G121SN01 V2 rev.0.0
14/26
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