T17C1 ACER, T17C1 Datasheet - Page 11

• Manufacturer Part Number: T17C1
• Description: COLOR TFT LCD MODULE
• Manufacturer: ACER

2.2 BACKLIGHT UNIT
Lamp Input Voltage
Lamp Current
Lamp Turn On Voltage
Operating Frequency
Lamp Life Time
Power Consumption
Note (1) Lamp current is measured by utilizing a current meter for high frequency as shown below:
Note (2) The voltage shown above should be applied to the lamp for more than 1 second after startup.
Note (3) The lamp frequency may produce interference with horizontal synchronous frequency from the
Note (4) P
Note (5) The lifetime (Hr) of a lamp can be defined as the time in which it continues to operate under the
Note (6) The waveform of the voltage output of inverter must be area-symmetric and the design of the
(a) When the brightness becomes 50% or lower than its original,
(b) When the effective ignition length becomes 80% or lowers than its original value. (Effective
Otherwise the lamp may not be turned on.
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.
condition Ta = 25±2℃ and I
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 designed with care so as not to produce
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. When the above situation is confirmed, the
module should be operated in the same manners as it is installed in your instrument.
Parameter
L
= I
ignition length is defined as an area that has less than 70% brightness compared to the
brightness in the center point.)
L
Module
×V
LCD
L
.
Symbol
Hot 2 (Pink)
Hot 1 (Pink)
GND (White)
L
V
V
P
F
I
BL
L
L
S
L
L
L
BACKLIGHT ( 2 Dual CCFLs)
= 14.0 mArms until one of the following event occurs:
50,000
Min.
640
6.0
30
-
-
-
11/26
1
4
2
Current meter
A
Value
9360
13.0
Typ.
720
45
-
-
-
Inverter
1500
Max.
1150
14.0
800
80
-
-
Issue Date: Feb.1’2001
Model: M170E1 -01
mA
V
V
V
KHz
Unit
mW
Hrs
Dcc No.: 14007038
RMS
RMS
RMS
RMS
Approval
Version 2.2
13mA
25
Note
0
(1)
(1)
(1)
(4)
o
o
C
C