LP141E04.pdf

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LP141E04
Liquid Crystal Display
Product Specification
1. General Description
The LP141E04-A1 is a Color Active Matrix Liquid Crystal Display with an integral Cold Cathode Fluorescent
Lamp(CCFL) backlight system. The matrix employs a-Si Thin Film Transistor as the active element.
It is a transmissive type display operating in the normally white mode. This TFT-LCD has 14.1 inches
diagonally measured active display area with SXGA+ resolution(1050 vertical by 1400 horizontal pixel array)
Each pixel is divided into Red, Green and Blue sub-pixels or dots which are arranged in vertical stripes.
Gray scale or the brightness of the sub-pixel color is determined with a 6-bit gray scale signal for each dot,
thus, presenting a palette of more than 262,144 colors.
The LP141E04-A1 has been designed to apply the interface method that enables low power, high speed,
low EMI.
The LP141E04-A1 is intended to support applications where thin thickness, low power are critical factors
and graphic displays are important. In combination with the vertical arrangement of the sub-pixels, the
LP141E04-A1 characteristics provide an excellent flat display for office automation products such as
Notebook PC.
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General Features
Active Screen Size
14.1 inches(35.7cm) diagonal
Outline Dimension
298.0(H) x 226.5(V) x 5.4(D) mm(Typ.)
Pixel Pitch
0.204(H) x 0.204(V) mm
Pixel Format
1400 horiz. By 1050 vert. Pixels RGB strip arrangement
Color Depth
6-bit, 262,144 colors
Luminance, White
200 cd/m 2 (Typ.)
Power Consumption
5.5 Watt(Typ.)
Weight
450 g (typ.)
Display Operating Mode
Transmissive mode, normally white
Surface Treatment
Hard coating(3H) Anti-reflection treatment of the front polarizer
Maker: NITTO,Model Number : LNC-TEGAG150-E120T
Ver. 1.0
JUL 25, 2002
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LP141E04
Liquid Crystal Display
Product Specification
2. Electrical Specifications
The LP141E04-A1 requires two power inputs. One is employed to power the LCD electronics and to drive
the TFT array and liquid crystal. The second input which powers the CCFL, is typically generated by an
inverter. The inverter is an external unit to the LCD.
Table 1. ELECTRICAL CHARACTERISTICS
Parameter
Symbol
Values
Unit
Notes
Min
Typ
Max
MODULE :
Power Supply Input Voltage
VCC
3.0
3.3
3.6
Vdc
Power Supply Input Current Window
I CC
-
470
540
mA
1
Full Black
-
-
490
560
mA
2 by 2 Vertical Line
-
-
600
680
mA
Power Consumption Window
Pc
-
1.6
2.0
Watt
1
Differential Impedance
Zm
90
100
110
ohm
2
LAMP :
Operating Voltage
V BL
613(6.5mA)
619(6.3mA)
845(2.0mA)
V RMS
3
Operating Current
I BL
2.0
6.3
6.5
mA RMS
4
Established Starting Voltage
Vs
5
at 25
C
-
-
1140
V RMS
at 0
C
-
-
1370
V RMS
Operating Frequency
f BL
50
65
80
kHz
6
Discharge Stabilization Time
T S
-
-
3
Min
7
Power Consumption
P BL
-
3.9
4.3
Watt
8
Life Time
10,000
-
-
Hrs
9
Note)
The design of the inverter must have specifications for the lamp in LCD Assembly. The performance
of the Lamp in LCM, for example life time or brightness, is extremely influenced by the characteristics of the
DC-AC inverter. 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 unwanted lighting caused by the mismatch of the lamp and the inverter(no lighting, flicker, etc)
never occurs. When you confirm it, the LCD Assembly should be operated in the same condition as installed
in your instrument.
C , f V (frame frequency) = 50Hz condition.
2. This impedance value is needed to proper display and measured from LVDS T X to the mating connector.
3. The variance of the voltage is
10%.
4. The typical operating current is for the typical surface luminance (L WH ) in optical characteristics.
Ver. 1.0
JUL 25, 2002
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1. VCC=3.3V, 25
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LP141E04
Liquid Crystal Display
Product Specification
5. The voltage above V S should be applied to the lamps for more than 1 second for start-up. Otherwise, the
lamps may not be turned on. The used lamp current is the lamp typical current.
6. 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
which has unsymmetrical voltage and unsymmetrical current and spike wave.
Lamp frequency may produce interference with horizontal synchronous frequency and as a result this
may cause beat on the display. Therefore lamp frequency shall be as away possible from the horizontal
synchronous frequency and from its harmonics in order to prevent interference.
7. Let’s define the brightness of the lamp after being lighted for 5 minutes as 100%.
T S is the time required for the brightness of the center of the lamp to be not less than 95%.
8. The lamp power consumption shown above does not include loss of external inverter.
The used lamp current is the lamp typical current.
9. The life time is determined as the time at which brightness of the lamp is 50% compared to that of initial
value at the typical lamp current on condition of continuous operating at 25
2
C.
Requirements for a system inverter design, which is intended to have a better display performance, a
better power efficiency and a more reliable lamp, are following. It shall help increase the lamp lifetime and
reduce leakage current.
a. The asymmetry rate of the inverter waveform should be less than 10%.
b. The distortion rate of the waveform should be within
2
* Asymmetry rate:
I p
| I p –I –p | / I rms * 100%
I -p
* Distortion rate
I p (or I –p ) / I rms
Do not attach a conducting tape to lamp connecting wire.
If the lamp wire attach to a conducting tape, TFT-LCD Module has a low luminance and the inverter
has abnormal action. Because leakage current is occurred between lamp wire and conducting tape.
Ver. 1.0
JUL 25, 2002
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10%.
* Inverter output waveform had better be more similar to ideal sine wave.
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LP141E04
Liquid Crystal Display
Product Specification
3. Interface Connections
This LCD employs two interface connections, a 20 pin connector is used for the module electronics interface
and the other connector is used for the integral backlight system.
The electronics interface connector is a model DF19K-20P-1H manufactured by HIROSE or equivalent.
Table 2. MODULE CONNECTOR PIN CONFIGURATION (CN1)
Pin
Symbol
Description
Notes
1
VCC
Power Supply, 3.3V Typ.
[LVDS Transmitter]
THINE, THC63LVD823
2
VCC
Power Supply, 3.3V Typ.
3
GND
Ground
[LVDS Receiver]
THINE, THC63LVD824
4
GND
Ground
5
R IN 0-
Negative LVDS differential data input (R0~R5,G0)
[Connector]
DF19K-20P-1H , HIROSE
6
R IN 0+
Positive LVDS differential data input (R0~R5,G0)
7
GND
Ground
8
R IN 1-
Negative LVDS differential data input (G1~G5,B0~B1)
[Connector pin arrangement]
9
R IN 1+
Positive LVDS differential data input (G1~G5,B0~B1)
10
GND
Ground
20
LCD rear view
1
11
R IN 2-
Negative LVDS differential data input (B2~B5,HS,VS,DE)
12
R IN 2+
Positive LVDS differential data input (B2~B5,HS,VS,DE)
13
GND
Ground
14
CLK-
Clock -
15
CLK+
Clock +
16
GND
Ground
17
NC
Reserved
18
NC
Reserved
19
NC
Reserved
20
NC
Reserved
The backlight interface connector is a model BHSR-02VS-1, manufactured by JST. The mating connector
part number is SM02B-BHSS-1 or equivalent.
Table 3. BACKLIGHT CONNECTOR PIN CONFIGURATION (J1)
Pin
Symbol
Description
Notes
1
HV
Power supply for lamp (High voltage side)
1
2
LV
Power supply for lamp (Low voltage side)
1
Notes)
1. The high voltage side terminal is colored pink and the low voltage side terminal is white.
Ver. 1.0
JUL 25, 2002
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LP141E04
Liquid Crystal Display
Product Specification
<FRONT VIEW>
Note) Unit:[mm], General tolerance:
0.5mm
Ver. 1.0
JUL 25, 2002
5/ 7
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