M220Z1-L10 Ver la hoja de datos (PDF) - Unspecified
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M220Z1-L10 Datasheet PDF : 26 Pages
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Issued Date: Jan. 06, 2009
Model No.: M220Z1-L10
Approval
3.2 BACKLIGHT UNIT
Parameter
Symbol
Lamp Input Voltage
VL
Lamp Current
IL
Lamp Turn On Voltage VS
Operating Frequency
FL
Lamp Life Time
LBL
Power Consumption
PL
Min.
710
3
-
-
40
50000
10.68
Value
Typ.
790
7.5
-
-
60
11.86
Max.
870
8
1560(25°C)
1800(0°C)
80
-
13.04
Unit
VRMS
mARMS
VRMS
VRMS
KHz
Hrs
W
Note
IL = 7.5 mA
(1)
(2)
(2)
(3)
(5) IL = 7.5 mA
(4), IL = 7.5 mA
Note (1)Lamp current is measured by utilizing high-frequency current meters as shown below:
LCD
Module
HV (Pink)
1
LV (White)
2
A
HV (Blue)
1
LV (Black)
Current
2
A
Probe
Inverter
Current
Amplify Oscilloscope
Measure equipment:
Current Amplify: Tektronix TCPA300
Current probe: Tektronix TCP312
Oscilloscope: TDS3054B
Ta = 25 ± 2 ºC
Note (2) The voltage that must be larger than Vs should be applied to the lamp for more than 1 second
after startup. Otherwise, the lamp may not be turned on normally. It is the value output voltage of
NF circuit.
Note (3) The lamp frequency may produce interference with horizontal synchronization frequency from the
display, which might cause line flow on the display. In order to avoid interference, the lamp
frequency should be detached from the horizontal synchronization frequency and its harmonics
as far as possible.
Note (4) PL = IL ×VL X 2CCFLs
Note (5) The lifetime of lamp can be defined as the time in which it continues to operate under the
condition Ta = 25 ±2 oC and IL = 7.5 mArms until one of the following events occurs:
(a) When the brightness becomes ≦ 50% of its original value.
(b) When the effective ignition length becomes ≦ 80% of its original value.
(The effective ignition length is a scope that luminance is over 80% of that at the center point.)
Note (6) The waveform of the voltage output of inverter must be area-symmetric and the design of the
inverter must have specifications for the modularized lamp. The performance of the Backlight,
such as lifetime or brightness, is greatly influenced by the characteristics of the DC-AC inverter
for the lamp. All the parameters of an inverter should be carefully designed to avoid producing too
much current leakage from high voltage output of the inverter. When designing or ordering the
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Version 2.0
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