G133I1-L02 Datasheet, PDF (9/27 Pages) AZ Displays – TFT LCD Approval Specification

Issued Date: Aug. 26, 2008
Model No.: G133I1 - L02
Approval
3.2 BACKLIGHT UNIT
Parameter
Symbol
Lamp Input Voltage
V_L
Lamp Current
I_L
Lamp Turn On Voltage V_S
Operating Frequency
F_L
Lamp Life Time
L_BL
Power Consumption
P_L
Min.
531
2.0
--
--
50
50000
Value
Typ.
590
6.5
--
--
--
--
3.84
Ta = 25 ± 2 ºC
Max.
649
7.0
1080(25 )
1290(0 )
80
--
--
Unit
V_RMS
mA_RMS
V_RMS
V_RMS
KHz
Hrs
W
Note
I_L = 6.5 mA
(1)
(2)
(2)
(3)
(5)
(4), I_L = 6.5 mA
Note (1) Lamp current is measured by utilizing a high frequency current meter as shown below:
LCD
Module
HV (Pink)
LV (White)
1
2
A
Current Meter
Inverter
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.
Note (3) The lamp frequency may produce interference with horizontal synchronous frequency from the
display, and this may cause line flow on the display. In order to avoid interference, the lamp
frequency should be detached from the horizontal synchronous frequency and its harmonics as far
as possible.
Note (4) P_L = I_L V_L
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 I_L = 6.5 mArms until one of the following events occurs:
(a) When the brightness becomes or lower than 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 70% 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
inverter please make sure that a poor lighting caused by the mismatch of the Backlight and the
inverter (miss-lighting, flicker, etc.) never occurs. If the above situation is confirmed, the module
should be operated in the same manners when it is installed in your instrument.
The output of the inverter must have symmetrical (negative and positive) voltage waveform and
symmetrical current waveform.(Unsymmetrical ratio is less than 10%) Please do not use the inverter
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The information described in this technical specification is preliminary and it is possible to be changed without prior
notice. Please contact CMO ’s representative while your product design is based on this specification. Version 2.2