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PDF LTN154AT07-F Data sheet ( Hoja de datos )
| Número de pieza | LTN154AT07-F | |
| Descripción | Display Module | |
| Fabricantes | Samsung | |
| Logotipo |  |
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Product Information
TO
DATE : Oct. 7. 2008.
SSAAMMSSUUNNGGTTFFTT-L-LCCDD
MMOODDEELLNNOO..::LLTTNN115544AATT0077--FF
NOTE : Surface type [ Glare ]
The information described in this SPEC is preliminary and can be changed without prior notice.
APPROVED BY :
PREPARED BY : Application Engineering Part (Mobile)
SAMSUNG ELECTRONICS CO., LTD.
Samsung Secret
Doc.No. LTN154AT07-F03 Rev.No
04-P00-G-070808
Page 1 / 30
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1 page  
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1.2 ELECTRICAL ABSOLUTE RATINGS
(1) TFT LCD MODULE
Item
Power Supply Voltage
Logic Input Voltage
Note (1) Within Ta (25 ± 2 °C )
Symbol
VDD
VDD
Min.
VDD – 0.3
VDD – 0.3
Product Information
VDD =3.3V, VSS = GND = 0V
Max.
Unit Note
VDD + 0.3
V
(1)
VDD + 0.3
V
(1)
(2) BACK-LIGHT UNIT
Item
Symbol
Min.
Max.
Ta = 25 ± 2 °C
Unit Note
Lamp Current
Lamp frequency
IL
FL
3.0
50
7.0
mArms
(1)
80 kHz (1)
Note 1) Permanent damage to the device may occur if maximum values are exceeded
Functional operation should be restricted to the conditions described under normal operating conditions.
Samsung Secret
Doc.No. LTN154AT07-F03 Rev.No
04-P00-G-070808
Page 5 / 30
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3.2 BACK-LIGHT UNIT
Product Information
The backlight system is an edge-lighting type with a single CCFT ( Cold Cathode Fluorescent Tube ).
The characteristics of a single lamp are shown in the following table.
- INVERTER : SEM SIC 130T
Ta= 25 ± 2 °C
Item
Symbol
Min.
Typ.
Max.
Unit
Note
Lamp Current
IL 3.0 6.0 6.5 mArms
(1)
Lamp Voltage
VL
-
705
-
Vrms
IL=6.0mA
Frequency
fL 50 60 65 KHz
(2)
Power Consumption
PL
4.2
(3)
W
IL=6.0mA
Operating Life Time Hr 10,000
Hour
(4)
Startup Voltage
VS
-
1,180
Vrms
25°C, (5)
-
1,415
Vrms
0°C, (5)
Lamp startup time
- - 1.0 sec
(5)
Note) The waveform of the inverter output voltage must be area symmetric and the design of the
inverter must have specifications for the modularized lamp.
The performance of the backlight, for example life time or brightness, is much influenced by the
characteristics of the DC-AC inverter for the lamp. So all the parameters of an inverter should be carefully
designed so as not to produce too much leakage current from high-voltage output of the inverter.
When you design or order the inverter, please make sure that a poor lighting caused by the mismatch of
the backlight and the inverter(miss lighting, flicker, etc.) never occur. When you confirm it, the module
should be operated in the same condition as it is installed in your instrument.
Note (1) Lamp current is measured with a high frequency current meter as shown below.
LCD
MODULE
HOT : ( Pink )
1
2
COLD : ( White )
A
INVERTER
(SIC-130T)
(2) Lamp frequency may produce interference with horizontal synchronous frequency and this
may cause line flow on the display. Therefore lamp frequency should be detached from the
horizontal synchronous frequency and its harmonics as far as possible in order to avoid interference.
(3) Refer to IL ×VL to calculate.
(4) Life time (Hr) of a lamp can be defined as the time in which it continues to operate under the
condition Ta= 25 ± 2 °C and IL = 6.0 mArms until one of the following event occurs.
1. When the brightness becomes 50% or lower than the original.
2. When the Effective ignition length becomes 80% or lower than the original value.
(Effective ignition length is defined as an area that has less than 70% brightness compared to
the brightness in the center point.)
(5) The inverter open voltage - this voltage should be measured after ballast capacitor- have to be larger
than the lamp startup voltage, otherwise backlight may has blinking for a moment after turns on
or not be turned on.
If an inverter has shutdown function it should keep its open voltage for longer than 1 second
even if lamp connector open.
Samsung Secret
Doc.No. LTN154AT07-F03 Rev.No
04-P00-G-070808
Page 11 / 30
Datasheet pdf - http://www.DataSheet4U.net/
11 Page | ||
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