G104X1-L01 Datasheet, PDF (8/26 Pages) AZ Displays – TFT LCD Approval Specification

Issued Date: Aug. 26, 2008
Model No.: G104X1-L01
Approval
3.2 BACKLIGHT UNIT
3.2.1 CCFL (Cold Cathode Fluorescent Lamp) CHARACTERISTICS (Ta = 25 ± 2 ºC)
Parameter
Symbol
Min.
Value
Typ.
Max.
Unit
Note
Lamp Voltage
V_W
460
V_RMS
I_L = 7.0mA
Lamp Current
I_L
6.5
7
7.5
mA_RMS
(1)
Lamp Starting Voltage V_S
770
V_RMS
(2) at 25
960
V_RMS
(2),at 0
Operating Frequency F_O
Lamp Life Time
L_BL
45
50,000
80
KHz
(3)
Hrs
(4)
Note (1) Lamp current is measured by utilizing AC current probe and its value is average by measuring master
and slave board.
Note (2) The lamp starting voltage VS should be applied to the lamp for more than 1 second after startup.
Otherwise the lamp may not be turned on.
Note (3) The lamp frequency may produce interference with horizontal synchronous frequency of the display
input signals, and it may result in 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) 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 = 7 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.)
4. BLOCK DIAGRAM
4.1 TFT LCD MODULE
RX0(+/-)
RX1(+/-)
RX2(+/-)
RX3(+/-)
RXCLK(+/-)
Vcc
GND
TIMING
CONTROLLER
DC/DC CONVERTER &
REFERENCE VOLTAGE
TFT LCD PANEL
(1024x3x768)
DATA DRIVER IC
8
Version2.2