LG Display LC370WXE-SDP1 Specification
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()Preliminary Specification
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LC370WXE
Product Specification
SPECIFICATION
FOR
APPROVAL
() Final Specification
Title 37.0” WXGA TFT LCD
BUYER KONKA
MODEL
APPROVED BY
/
SIGNATURE
DATE
SUPPLIER LG Display Co., Ltd.
*MODEL LC370WXE
SUFFIX SDP1 (RoHS Verified)
*When you obtain standard approval,
please use the above model name without suffix
APPROVED BY
J.Y. Lee /Team Leader
REVIEWED BY
SIGNATURE
DATE
/
/
Please return 1 copy for your confirmation with
your signature and comments.
Ver. 1.0
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S.H. Kim / Project Leader
PREPARED BY
D.S. Choi / Engineer
TV Product Development Dept.
LG Display Co., Ltd.
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LC370WXE
Product Specification
CONTENTS
Number
1
2
3
3-1
3-2
3-3
3-4
3-5
3-6
4
ITEM
COVER 1
CONTENTS
RECORD OF REVISIONS
GENERAL DESCRIPTION
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL SPECIFICATIONS
ELECTRICAL CHARACTERISTICS
INTERFACE CONNECTIONS
SIGNAL TIMING SPECIFICATIONS
SIGNAL TIMING WAVEFORMS
COLOR DATA REFERENCE
POWER SEQUENCE
OPTICAL SPECIFICATIONS
Page
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7
7-1
7-2
8
8-1
8-2
9
9-1
9-2
9-3
9-4
9-5
MECHANICAL CHARACTERISTICS
RELIABILITY
INTERNATIONAL STANDARDS
SAFETY
EMC
PACKING
INFORMATION OF LCM LABEL
PACKING FORM
PRECAUTIONS
MOUNTING PRECAUTIONS
OPERATING PRECAUTIONS
ELECTROSTATIC DISCHARGE CONTROL
PRECAUTIONS FOR STRONG LIGHT EXPOSURE
STORAGE
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9-6 HANDLING PRECAUTIONS FOR PROTECTION FILM
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RECORD OF REVISIONS
Revision No. Revision Date Page Description
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LC370WXE
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LC370WXE
Product Specification
1. General Description
The LC370WXE is a Color Active Matrix Liquid Crystal Display with an integral External Electrode Fluorescent
Lamp(EEFL) backlight system. The matrix employs a-Si Thin Film Transistor as the active element.
It is a transmissive display type which is operating in the normally black mode. It has a 37.02 inch diagonally
measured active display area with WXGA resolution (768 vertical by 1366 horizontal pixel array).
Each pixel is divided into Red, Green and Blue sub-pixels or dots which are arrayed in vertical stripes.
Gray scale or the luminance of the sub-pixel color is determined with a 8-bit gray scale signal for each dot.
Therefore, it can present a palette of more than 16.7M(true) colors.
It has been designed to apply the 8-bit 1-port LVDS interface.
It is intended to support LCD TV, PCTV where high brightness, super wide viewing angle, high color gamut,
high color depth and fast response time are important.
Mini-LVDS(RGB)
+12.0V
LVDS
5pair
Select #9
CN1
(30pin)
EEPROM
SCL
Timing Controller
[LVDS Rx]
SDA
Power Circuit
Block
High Input
High Input
CN2, 3pin, 14 Lamps/@89 mA
CN3, 3pin, 14 Lamps/@89mA
General Features
Active Screen Size 37.02 inches(940.3mm) diagonal
G1
Gate Driver Circuit
G768
Source Driver Circuit
S1 S1366
TFT - LCD Panel
(1366 Ý RGB Ý 768 pixels)
Back light Assembly
Outline Dimension 877.0mm(H) x 516.8mm(V) x 46.9mm(D) (Typ.)
Pixel Pitch 0.200mm x 0.600mm x RGB
Pixel Format 1366 horiz. by 768 vert. pixels RGB stripe arrangement
Color Depth 8-bit, 16.7 M colors
Luminance, White 380 cd/m
Viewing Angle (CR>10) Viewing angle free ( R/L 178(Typ.), U/D 178(Typ.))
Power Consumption Total 88.2 Watt (Typ.) (Logic= 3.2 W, Inverter= 85W @ with inverter )
Weight 6,950(Typ.)
Display Mode Transmissive mode, Normally black
Surface Treatment Hard coating, Anti-glare treatment of the front polarizer (Haze 13%)
Ver. 1.0
2
(Center 1 point) (Typ.)
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LC370WXE
Product Specification
2. Absolute Maximum Ratings
The following items are maximum values which, if exceeded, may cause faulty operation or damage to the
LCD module.
Table 1. ABSOLUTE MAXIMUM RATINGS
Parameter Symbol
Unit Remark
Min Max
Value
Power Input
Voltage
LCD circuit V
Operating
B/L Input voltage
Voltage (one
side)
Operating Temperature T
Storage Temperature T
Operating Ambient Humidity H
Storage Humidity H
LCD -0.3 +14.0 V [DC]
V
OP 700 1100 V[ RMS]
OP 0+50
ST -20 +60
OP 10 90 %RH
ST 10 90 %RH
¶C
¶C
Notes : 1. Temperature and relative humidity range are shown in the figure below.
Wet bulb temperature should be Max 39 ¶C and no condensation of water.
2. Gravity mura can be guaranteed below 40ć condition.
90%
GY\Gr YG¶j
GY\Gr YG¶j
Note 1
Ver. 1.0
Wet Bulb
Temperature [
10
0
10 20 30 40 50 60 70 800-20
Dry Bulb Temperature [
¶C]
20
30
40
¶C]
50
60
60%
40%
10%
Storage
Operation
Humidity [(%)RH]
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LC370WXE
Product Specification
3. Electrical Specifications
3-1. Electrical Characteristics
It requires two power inputs. One is employed to power for the LCD circuit. The other Is used for the EEFL
backlight and inverter circuit.
Table 2. ELECTRICAL CHARACTERISTICS
Value
Parameter Symbol
Min Typ Max
Unit Note
Circuit :
Power Input Voltage V
Power Input Current ILCD
Power Consumption P
Rush current I
LCD 10.8 12.0 13.2 VDC
-
-
LCD -
RUSH --3.0A3
260 338
350 455
3.2 4.2
Notes : 1. The specified current and power consumption are under the V
condition whereas mosaic pattern(8 x 6) is displayed and f
is the frame frequency.
V
2. The current is specified at the maximum current pattern.
3. The duration of rush current is about 2ms and rising time of power input is 0.5ms (min.).
White : 255Gray
Black : 0Gray
mA 1
mA 2
Watt 1
=12.0V, 25 r 2¶C, fV=60Hz
LCD
Mosaic Pattern(8 x 6)
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Table 3. ELECTRICAL CHARACTERISTICS (Continue)
LC370WXE
Parameter Symbol
Values
Unit Note
Min Typ Max
Backlight Assembly :
Operating Voltage
(one side,fBL=63KHz, I
BL=90 mA
RMS
)
Operating Current (one side) I
Striking Voltage
(Open Lamp Voltage @ one side)
Operating Frequency f
Striking Time S
Power Consumption P
V
BL 882 980 1078 V
BL 84.55 89 93.45 mA
OPEN 1190 - 1430 V
V
BL 61 63 65 kHz 4
TIME 1.5 - - sec 3
BL - 85 - Watt 6
RMS
RMS
RMS
1, 2
1, 3
Burst Dimming Duty {a/T} * 100 20 100 % 9
Burst Dimming Frequency 1/T 95 182 Hz 9
Parameter Symbol
Values
Unit Note
Min Typ Max
Lamp : (APPENDIX-V)
Lamp Voltage (one side) V
Lamp Current (one side) I
Discharge Stabilization Time T
Lamp Frequency f
Established Starting Voltage V
LAMP 890 1125 1315 V
LAMP 3 6.3 8.0 mA
S --3Min1, 5
LAMP 61 63 65 KHz
S 1190 V
RMS
RMS
RMS
1, 2
1, 3
Life Time 50,000 60,000 Hrs 7
1
1
Note
The design of the inverter must have specifications for the lamp in LCD Assembly.
The electrical characteristics of inverter are based on High-High Driving type.
The performance of the lamps 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) has never been occurred. When you confirm it, the LCD–
Assembly should be operated in the same condition as installed in your instrument.
Ć Do not attach a conductive tape to lamp connecting wire.
If you attach conductive tape to the lamp wire, not only luminance level can be lower than typical one but
also inverter operate abnormally on account of leakage current which is generated between lamp wire and
conductive tape.
1. Specified values are defined for a Backlight Assembly.( IBL : 14 lamp, 6.35 mA/Lamp)
2. Operating voltage is measured at 25 r 2¶C(after 2hr.aging).The variance range for operating voltage
is r 10%.
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Product Specification
}T
S TIME
Vs = (Vpk-pk) / [ 2*root(2)]
3. The Striking Voltage (Open Lamp Voltage) [ Vopen ] should be applied to the lamps more than Striking
time (S
Otherwise, the lamps may not be turned on. The used lamp current is typical value.
When the Striking Frequency is higher than the Operating Frequency , the parasitic capacitance
can cause inverter shut down, therefore It is recommended to check it.
4. Lamp frequency may produce interference with horizontal synchronous frequency.As a result this may
cause beat on the display. Therefore, lamp frequency shall be away as much as possible from the
horizontal synchronous frequency and its harmonics range in order to prevent interference.
There is no reliability problem of lamp, if use out of range of operation frequency (61kHz~65kHz) on CAS
5. The brightness of the lamp after lighted for 5minutes is defined as 100%.
T
current.
The screen of LCD module may be partially dark by the time the brightness of lamp is stable after turn on.
6. Maximum level of power consumption is measured at initial turn on.
Typical level of power consumption is measured after 2hrs aging at 25 r 2¶C.
7. 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 r 2¶C, based on duty 100%.
8.The output of the inverter must have symmetrical(negative and positive) voltage and current waveform
(Unsymmetrical ratio is less than 10%). Please do not use the inverter which has not only unsymmetrical
voltage and current but also spike wave.
Requirements for a system inverter design, which is intended to achieve better display performance,
power efficiency and more reliable lamp characteristics.
It can help increase the lamp lifetime and reduce leakage current.
TIME) for start-up. Inverter Striking Voltage must be more than Established Starting Voltage of lamp.
is the time required for the brightness of the center of the lamp to be not less than 95% at typical
S
a. The asymmetry rate of the inverter waveform should be less than 10%.
b. The distortion rate of the waveform should be within √2 ·10%.
* Inverter output waveform had better be more similar to ideal sine wave.
* Asymmetry rate:
I p
|I
p
– I–p|/I
oRMS
x 100%
* Distortion rate
I -p
(or I–p)/I
I
p
Ver. 1.0
oRMS
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9. The reference method of burst dimming duty ratio.
It is recommended to use synchronous V-sync frequency to prevent waterfall
(Vsync x 2 =Burst Frequency)
PWM
LC370WXE
{
A
+3.3V TTL
I-out
Output of Inverter to Lamp
90%
PWM duty={ A/T } * 100
Point A : rising time 90% of Iout point .
Point B : falling starting point .
I out duty = { a/T } * 100
PWM Frequency = 1/T
Ć We recommend not to be much different between PWM duty and Iout duty .
Ć Dimming current output rising and falling time may produce humming and inverter trans’ sound noise.
Ć Burst dimming duty should be 100% for more than 1second after turn on.
Ć Equipment
Oscilloscope :TDS3054B(Tektronix)
Current Probe : P6022 AC (Tektronix)
High Voltage Probe: P5100(Tektronix)
Point A
a
Point B
10. The Cable between the backlight connector and its inverter power supply should be connected directly
with a minimized length. The longer cable between the backlight and the inverter may cause the lower
luminance of lamp and may require more higher starting voltage ( Vs ).
11. The operating current must be measured as near as backlight assembly input.
12. The operating current unbalance between left and right must be under 10% of Typical current
│Left(Master) current – Right(Slave) Current│ ର 10% of typical current
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3-2. Interface Connections
This LCD module employs two kinds of interface connection, a 30-pin connector is used for the module electronics and
3-pin Balance PCB connector is used for the integral backlight system.
3-2-1. LCD Module
- LCD Connector(CN5) : FI-X30SSL-HF (Manufactured by JAE) or IS100-L30B-C23(Manufactured by UJU)
- Mating Connector : FI-X30C2L (Manufactured by JAE) or Equivalent
Table 4. MODULE CONNECTOR(CN5) PIN CONFIGURATION
Pin No. Symbol Description Note
Power Supply +12.0V
Power Supply +12.0V
Power Supply +12.0V
Power Supply +12.0V
Appendix VII
No Connection
No Connection
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25
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28
29
30
1
2
3
4
5
6
7
8
9
VLCD
VLCD
VLCD
VLCD
GND Ground
GND Ground
GND Ground
GND Ground
LVDS Select ಫHಬ =JEIDA , ಫLಬ or NC = VESA
uj No Connection
GND Ground
RA- LVDS Receiver Signal(-)
RA+ LVDS Receiver Signal(+)
GND Ground
RB- LVDS Receiver Signal(-)
RB+ LVDS Receiver Signal(+)
GND Ground
RC- LVDS Receiver Signal(-)
RC+ LVDS Receiver Signal(+)
GND Ground
RCLK- LVDS Receiver Clock Signal(-)
RCLK+ LVDS Receiver Clock Signal(+)
GND Ground
RD- LVDS Receiver Signal(-)
RD+ LVDS Receiver Signal(+)
GND Ground
NC
NC
GND Ground
GND Ground
Notes :
1. All GND(ground) pins should be connected together to the LCD module’s metal frame.
2. All VLCD (power input) pins should be connected together.
3. All Input levels of LVDS signals are based on the EIA 644 Standard. (Please see the Appendix VI)
4. Specific pin No. #30 is used for “No signal detection” of system signal interface.
It should be GND for NSB(No Signal Black) during the system interface signal is not.
If this pin is “H”, LCD Module displays AGP(Auto Generation Pattern).
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3-2-2. Backlight Inverter
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LC370WXE
Product Specification
[ Master ]
1) Balance Connector
: 65002WS-03 (manufactured by YEONHO)or equivalent
2) Mating Connector
: 65002HS-03 (manufactured by YEONHO) or equivalent.
[ Slave ]
1) Balance Connector
: 65002WS-03 (manufactured by YEONHO)or equivalent
2) Mating Connector
: 65002HS-03 (manufactured by YEONHO) or equivalent.
Table 5. BACKLIGHT CONNECTOR PIN CONFIGURATION(CN2,CN3)
No Symbol Master Slave Note
1
2
3 FB NC NC
H_Input
H_Input
Rear view of LCM
123
High_Input High_Input
High_Input High_Input
1
23
Master
Slave
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3-3. Signal Timing Specifications
Table 6 shows the signal timing required at the input of the LVDS transmitter. All of the interface signal
timings should be satisfied with the following specification for normal operation.
Table 6-1. TIMING TABLE for NTSC (DE Only Mode)
ITEM Symbol Min Typ Max Unit Note
HV - 1366 - tclk
HB 90 162 410 tclk
HP 1456 1528 1776 tclk
VV - 768 - tHP
Horizontal
Vertical
Display Period t
Blank t
Total t
Display Period t
Blank tVB 8 22 240 tHP
Total tVP 776 790 1008 tHP
Frequency
DCLK f
Horizontal f
Vertical f
CLK 63.0 72.4 80.0 MHz
H 45 47.4 55 KHz
V 57 60 63 Hz
Table 6-2. TIMING TABLE for PAL (DE Only Mode)
ITEM Symbol Min Typ Max Unit Note
Display Period t
HV - 1366 - tclk
Horizontal
Vertical
Frequency
Note
Ver. 1.0
Blank t
Total t
Display Period t
HB 90 162 410 tclk
HP 1456 1528 1776 tclk
VV - 768 - tHP
Blank tVB 126 180 295 tHP
Total tVP 894 948 1063 tHP
DCLK f
Horizontal f
Vertical f
CLK 63.0 72.4 80.0 MHz
H 45 47.4 55 KHz
V 47 50 53 Hz
The Input of HSYNC & VSYNC signal does not have an effect on normal operation(DE Only Mode).
The performance of the electro-optical characteristics may be influenced by variance of the vertical
refresh rate.
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3-4. LVDS Signal Specification
3-4-1. LVDS Input Signal Timing Diagram
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LC370WXE
Product Specification
DE, Data
DCLK
First data
0.7VDD
0.3VDD
tCLK
DE(Data Enable)
0.5 VDD
Invalid data
Valid data
Pixel 0,0
Pixel 1,0
Invalid data
tHV
DE(Data Enable)
Ver. 1.0
tHP
1 768
tVV
tVP
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3-5. Color Data Reference
The brightness of each primary color (red, green, blue) is based on the 8-bit gray scale data input for the color.
The higher binary input, the brighter the color. Table 7 provides a reference for color versus data input.
Table 7. COLOR DATA REFERENCE
Input Color Data
Basic
Color
RED
Color
Black 000000000000000000000000
Red (255) 1 1 1 1 1 1 1 1 0 0 00000000000000
Green (255) 0 0 0 0 0 0 0 0 1 1 11111100000000
Blue (255) 0 0 0 0 0 0 0 0 0 0 00000011111111
Cyan 000000001111111111111111
Magenta 1 1 1 1 1 1 1 1 0 0 00000011111111
Yellow 111111111111111100000000
White 111111111111111111111111
RED (000) Dark 0 0 0 0 0 0 0 0 0 0 00000000000000
RED (001) 0 0 0 0 0 0 0 1 0 0 00000000000000
... ... ... ...
RED (254) 1 1 1 1 1 1 1 0 0 0 00000000000000
MSB LSB
R7 R6 R5 R4 R3 R2 R1 R0 G7 G6 G5 G4 G3 G2 G1 G0 B7 B6 B5 B4 B3 B2 B1 B0
RED
MSB LSB
GREEN
BLUE
MSB LSB
GREEN
BLUE
Ver. 1.0
RED (255) 1 1 1 1 1 1 1 1 0 0 00000000000000
GREEN (000) Dark 0 0 0 0 0 0 0 0 0 0 00000000000000
GREEN (001) 0 0 0 0 0 0 0 0 0 0 00000100000000
... ... ... ...
GREEN (254) 0 0 0 0 0 0 0 0 1 1 11111000000000
GREEN (255) 0 0 0 0 0 0 0 0 1 1 11111100000000
BLUE (000) Dark 0 0 0 0 0 0 0 0 0 000000000000000
BLUE (001) 0 0 0 0 0 0 0 0 0 0 00000000000001
... ... ... ...
BLUE (254) 0 0 0 0 0 0 0 0 0 0 00000011111110
BLUE (255) 0 0 0 0 0 0 0 0 0 0 00000011111111
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