LG Display LM270WQ3-SLA1 Specification
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Product Specification
Product Specification
SPECIFICATION
FOR
APPROVAL
LM270WQ3
Liquid Crystal Display
BUYER
MODEL
SIGNATURE DATE
/
/
DELL
27.0” QHD TFT LCDTitle
SUPPLIER LG Display Co., Ltd.
*MODEL LM270WQ3
SUFFIX SLA1
*When you obtain standard approval,
please use the above model name without suffix
APPROVED BY
C.K. Lee / G.Manager
REVIEWED BY
J.W. Hyun / Manager [C]
Y.S. Chung / Manager [M]
T.H. Shin / Manager [P]
DATE
J.Y. Moon / Manager [O]
/
Please return 1 copy for your confirmation
With your signature and comments.
Ver. 1.0 Sep. 06. 2012
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PREPARED BY
H.C. Jung / Engineer
IT Development Division 1
LG Display Co., Ltd
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LM270WQ3
Liquid Crystal Display
Product Specification
Contents
No ITEM
COVER
CONTENTS
RECORD OF REVISIONS
1 GENERAL DESCRIPTION
2 ABSOLUTE MAXIMUM RATINGS
3 ELECTRICAL SPECIFICATIONS
3-1 ELECTRICAL CHARACTREISTICS
3-2 INTERFACE CONNECTIONS
3-3 LVDS CHARACTREISTICS
3-4 SIGNAL TIMING SPECIFICATIONS
3-5 SIGNAL TIMING WAVEFORMS
3-6 COLOR INPUT DATA REFERNECE
3-7 POWER SEQUENCE & DIP CONDITION FOR LCD MODULE
4 OPTICAL SPECIFICATIONS
Page
1
2
3
4
5
6
6
8
11
14
15
16
17
19
5 MECHANICAL CHARACTERISTICS
6 RELIABLITY
7 INTERNATIONAL STANDARDS
7-1 SAFETY
7-2 EMC
7-3 ENVIRONMENT
8 PACKING
8-1 DESIGNATION OF LOT MARK
8-2 PACKING FORM
9 PRECAUTIONS
9-1 MOUNTING PRECAUTIONS
9-2 OPERATING PRECAUTIONS
9-3 ELECTROSTATIC DISCHARGE CONTROL
9-4 PRECAUTIONS FOR STRONG LIGHT EXPOSURE
9-5 STORAGE
25
28
29
29
29
29
30
30
30
31
31
31
32
32
32
9-6 HANDLING PRECAUTIONS FOR PROTECTION FILM
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LM270WQ3
Liquid Crystal Display
Product Specification
RECORD OF REVISIONS
Revision
No
0.1 Jan. 30. 2012 - First Draft(Preliminary)
0.2 Feb. 08. 2012 4 Updated Power Consumption
0.3 Feb. 10. 2012 7 Updated LED Bar Current & Power consumption
0.4 Apr. 06. 2012 17 Revised Power Sequence
0.5 May. 04. 2012 1 Insert Optical Manager Review Signature
Revision Date Page Description
5 Updated Absolute Maximum Ratings
30 Updated Packing Form
10 Updated Backlight Interface
26,27 Revised Front / Rear View
7 Updated Blue current Ratio
10 Updated LED connector
19 Updated Red color coordinates : Rx 0.675 Æ 0.680
Ry 0.315 Æ 0.310
Updated Green color coordinates : Gy 0.705 Æ 0.700
20 Updated Surface luminance standard : 5pts Avg. Æ 1P
Insert optical measurement equipment
31 Update 9-2 (3) Brightness trend depends on the temperature
0.6 Jun. 26. 2012 24 Update the spec of gray scale
28 Update the spec of altitude (operating)
0.7 Jul. 12. 2012 8 Modify the pin configuration of connector and notes
13 Modify the LVDS Data format
22 Update the RGB Gray of Macbeth Chart
0.8 Aug. 17. 2012 7 Updated LED Current Min Spec.
1.0 Sep. 06. 2012 - Final Draft
27 Updated Front / Rear View about mechanical drawing
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LM270WQ3
Liquid Crystal Display
Product Specification
1. General Description
LM270WQ3 is a Color Active Matrix Liquid Crystal Display with Light Emitting Diode (GB-r LED)
backlight system without LED driver. The matrix employs a-Si Thin Film Transistor as the
active element. It is a transmissive type display operating in the normally black mode. It has a
27inch diagonally measured active display area with QHD resolution (2560 vertical by 1440
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 10-bit gray scale signal for each dot, thus, presenting a palette of more
than 1.07Billion colors with Advanced-FRC (Frame Rate Control). It has been designed to apply the
10-bit 4port LVDS interface. It is intended to support displays where high brightness, super
wide viewing angle, high color saturation, and high color are important.
Mini-LVDS (RGB)
Gate Driver Circuit
G1
S1 S2560
TFT - LCD
LVDS
2Port
CN2
(41pin)
EEPROM
I2C
Timing
Controller
LVDS
2Port
ODC
Select
+12.0V
CN1
(51pin)
Power
Logic Power
3.3V / 1.8V
(2560 Ý RGB Ý 1440
G1440
Circuit
Block
Vled (Green )
Back light Assembly
Vled (Blue )
General Features
Active Screen Size 27.0 inches(68.47cm) diagonal
Outline Dimension 630.0(H) x 368.2(V) x 18.0(D) mm(Typ.)
Source Driver Circuit
Panel
pixels)
Pixel Pitch 0.2331 mm x 0.2331 mm
Pixel Format 2560 horiz. By 1440 vert. Pixels RGB stripes arrangement
Color Depth 1.07 Billion colors, 10Bit with A-FRC
2
Luminance, White 350 cd/m
(Center 1Point, Typ.)
Viewing Angle(CR>10) View Angle Free (R/L 178(Typ.), U/D 178(Typ.))
Power Consumption
Total 51.8 Watt (Typ.)
(9.6 Watt
@VLCD, 42.2W w/o driver)
Weight 3,600g (Typ.)
Display Operating Mode Transmissive mode, Normally Black
Surface Treatment Hard coating(3H), Anti-glare treatment of the front polarizer
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Product Specification
2. Absolute Maximum Ratings
The following are maximum values which, if exceeded,
may cause faulty operation or damage to the unit.
Table 1. ABSOLUTE MAXIMUM RATINGS
LM270WQ3
Liquid Crystal Display
Parameter Symbol
Power Input Voltage
Operating Temperature
Storage Temperature
Operating Ambient
Humidity
Storage Humidity
VLCD -0.3 14 Vdc at 25 r 2¶C
TOP 050
TST -20 60
HOP 10 90 %RH
HST 10 90 %RH
Values
Units Notes
Min Max
¶C
¶C
Note : 1. Temperature and relative humidity range are shown in the figure below.
Wet bulb temperature should be 39 ¶C Max, and no condensation of water.
2. Maximum Storage Humidity is up to 40, 70% RH only for 4 corner light leakage Mura.
3. Storage condition is guaranteed under packing condition
FIG. 1 Temperature and relative humidity
90%
60
1, 2
Wet Bulb
50
Temperature [C]
40
30
20
10
0
10 20 30 40 50 60 70 800-20
Dry Bulb Temperature [C]
Ver. 1.0 Sep. 06. 2012
60%
40%
10%
Storage
Operation
Humidity
[(%)RH]
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LM270WQ3
Liquid Crystal Display
Product Specification
3. Electrical Specifications
3-1. Electrical Characteristics
It requires two power inputs. One is employed to power the LCD electronics and to drive the
TFT array and liquid crystal. The second input power for the LED/Backlight, is typically
generated by a LED Driver. The LED Driver is an external unit to the LCDs.
Table 2-1. ELECTRICAL CHARACTERISTICS
Values
Parameter Symbol
Min Typ Max
MODULE :
Unit Notes
Power Supply Input voltage V
Permissive Power Input Ripple V
LCD 11.6 12.0 12.4 Vdc
dRF - 400 mVp-p
I
LCD-MOSAIC - 800 1040 mA 1
Power Supply Input Current
I
LCD-WHITE - 1150 1495 mA 2
P
LCD-MOSAIC - 9.6 12.48 Watt 1
Power Consumption
P
LCD-WHITE 13.8 17.94 Watt 2
Rush Current I
RUSH - - 3.0 A 3
Note :
1. The specified current and power consumption are under the V
condition whereas mosaic pattern(8 x 6) is displayed and f
V
=12.0V, 25 r 2¶C,fV=60Hz
LCD
is the frame frequency.
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 1ms(min.).
White : 255Gray
Black : 0Gray
Maximum current pattern
Mosaic Pattern(8 x 6)
White Pattern
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Product Specification
Table 3. LED Bar ELECTRICAL CHARACTERISTICS
LM270WQ3
Liquid Crystal Display
Parameter Symbol
I_Green 15.0 105 110 mA
LED String Current
I_Blue 11.2 65 68 mA
Blue current Ratio I
LED String Voltage
Power Consumption
LED Life Time LED_LT 30,000 Hrs 5, 7
B / IG 60.0 61.9 63.8 % 1,2,7,8
Vs_Green 58.0 62.0 66.0 V
Vs_Blue 58.0 62.0 66.0 V
PBar 42.2 45.0 Watt 1,4,6,7
Min. Typ. Max.
Values
LED driver design guide
1) The design of the LED driver must have specifications for the LED in LCD Assembly.
The performance of the LED in LCM, for example life time or brightness, is extremely
influenced by the characteristics of the LED driver.
So all the parameters of an LED driver should be carefully designed and output current should
be Constant current control. Please control feedback current of each string individually to
compensate the current variation among the strings of LEDs.
When you design or order the LED driver, please make sure unwanted lighting caused by
the mismatch of the LED and the LED driver (no lighting, flicker, etc) never occurs.
When you confirm it, the LCD module should be operated in the same condition as installed in
your instrument.
2) LGD recommend that Dimming Control Signal ( PWM Signal) is synchronized with Frame
Frequency for Wavy Noise Free.
Unit Notes
1, 2, 7
1, 3, 7
1. Specified values are for a single LED bar.
2. The specified current is defined as the input current for a single LED string with 100% duty cycle
3. The specified voltage is input LED string and Bar voltage at typical Current 100% duty current.
4. The specified power consumption is input LED bar power consumption at typical Current
100% duty current.
5. The life is determined as the time at which luminance of the LED is 50% compared to that of
initial value at the typical LED current on condition of continuous operating at 25 r 2¶C.
6. The power consumption shown above does not include loss of external driver.
The used LED bar current is the LED typical current.
The typical power consumption is calculated as
Bar = Vs(Typ.) x (I_green(Typ.)+I_blue(Typ)) x No. of strings.
P
The maximum power consumption is calculated as
Bar = Vs(Max.) x (I_green(Typ.)+I_blue(Typ)) x No. of strings
P
7. LED operating DC Forward Current must not exceed LED Max Ratings at 252 C
Green & Blue LED can be operated at 0~10mA current range, but LGD can not guarantee
the optical performance at this low current level.
8. Blue current Ratio is calculated with I
B(typ.)/IG(typ.) after 30min. aging time at 25 2 C.
It means the Blue current portion comparing with Green current at 100% duty typical current.
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LM270WQ3
Liquid Crystal Display
Product Specification
3-2. Interface Connections
This LCD module employs two kinds of interface connection, 51-pin and 41-pin connectors are
used for the module electronics and 14-pin connectors are used for the integral backlight system.
3-2-1. LCD Module (CN1, CN2)
- LCD Connector(CN1): IS050-C51B-C39-A(manufactured by UJU) or FI-RE51SHF(manufactured by JAE) or compatible. Refer to below and next Page table.
- Mating Connector : FI-RE51HL(JAE) or compatible
Table 3-1. MODULE CONNECTOR(CN1) PIN CONFIGURATION
No Symbol Description No Symbol Description
1 GND
2
3
4
5
6
7
8
9
NC No Connection
NC No Connection
NC No Connection
NC No Connection
ODC Select ‘H’ or NC = Enable , ‘L’ = Disable
NC
NC No Connection
PWM_OUT
Reference signal for LED Driver
Ground
No Connection
control
27
28
29
30
31
32
33
34
35
NC
R2AN
R2AP
R2BN
R2BP
R2CN
R2CP
GND
R2CLKN
SECOND LVDS Receiver Signal (A-)
SECOND LVDS Receiver Signal (A+)
SECOND LVDS Receiver Signal (B-)
SECOND LVDS Receiver Signal (B+)
SECOND LVDS Receiver Signal (C-)
SECOND LVDS Receiver Signal (C+)
SECOND LVDS Receiver Clock Signal(-)
No Connection
Ground
10
11 GND
12 R1AN
13 R1AP
14 R1BN
15
16 R1CN
17 R1CP
18 GND
19 R1CLKN
20
1 GND
2
22 R1DN
23 R1DP
24 R1EN
25 R1EP
26
NC No Connection
R1BP
R1CLKP
Reserved
36
Ground
FIRST LVDS Receiver Signal (A-) 38
FIRST LVDS Receiver Signal (A+) 39
FIRST LVDS Receiver Signal (B-)
FIRST LVDS Receiver Signal (B+)
FIRST LVDS Receiver Signal (C-)
FIRST LVDS Receiver Signal (C+)
Ground
FIRST LVDS Receiver Clock
Signal(-)
FIRST LVDS Receiver Clock
Signal(+)
Ground
FIRST LVDS Receiver Signal (D-)
FIRST LVDS Receiver Signal (D+)
FIRST LVDS Receiver Signal (E-)
FIRST LVDS Receiver Signal (E+)
No connection or GND
37
40 R2EN
41 R2EP
42
43
44
45
46
47
48
49
50
51
R2CLKP
GND
R2DN
R2DP
Reserved
Reserved
GND Ground
GND Ground
GND Ground
NC No connection
VLCD Power Supply +12.0V
VLCD Power Supply +12.0V
VLCD Power Supply +12.0V
VLCD Power Supply +12.0V
-- -
SECOND LVDS Receiver Clock Signal(+)
Ground
SECOND LVDS Receiver Signal (D-)
SECOND LVDS Receiver Signal (D+)
SECOND LVDS Receiver Signal (E-)
SECOND LVDS Receiver Signal (E+)
No connection or GND
No connection or GND
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 664 Standard.
4. Specific pins (pin No. #2~#6) are used for internal data process of the LCD module.
If not used, these pins are no connection.
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LM270WQ3
Liquid Crystal Display
Product Specification
- LCD Connector(CN2): IS050-C41B-C39-A(manufactured by UJU) or FI-RE41SHF(manufactured by JAE) or compatible. Refer to below table.
- Mating Connector : FI-RE41HL or compatible.
Table 3-2. MODULE CONNECTOR(CN2) PIN CONFIGURATION
No Symbol Description No Symbol Description
1
2 NC No connection 23
3 NC No connection 24 GND Ground
4NC
5NC
6 NC No connection 27
7 NC No connection 28
8 NC No connection 29 R4BP FORTH LVDS Receiver Signal (B+)
9
10
11
12
13 R3BP THIRD LVDS Receiver Signal (B+) 34 R4CLKP FORTH LVDS Receiver Clock Signal(+)
14
15
16
17
18 R3CLKP
19
20
21
NC
GND
R3AN
R3AP
R3BN
R3CN
R3CP
GND
R3CLKN
GND
R3DN
R3DP
No connection (Reserved) 22
No connection
No connection
Ground
THIRD LVDS Receiver Signal (A-) 31
THIRD LVDS Receiver Signal (A+) 32
THIRD LVDS Receiver Signal (B-) 33
THIRD LVDS Receiver Signal (C-) 35
THIRD LVDS Receiver Signal (C+) 36
Ground
THIRD LVDS Receiver Clock
Signal(-)
THIRD LVDS Receiver Clock
Signal(+)
Ground
THIRD LVDS Receiver Signal (D-) 41 GND Ground
THIRD LVDS Receiver Signal (D+) -
25 GND Ground
26
30
37
38
39
40 GND Ground
R3EN
R3EP
R4AN
R4AP
R4BN
R4CN
R4CP
GND
R4CLKN
GND
R4DN
R4DP
R4EN
R4EP
THIRD LVDS Receiver Signal (E-)
THIRD LVDS Receiver Signal (E+)
FORTH LVDS Receiver Signal (A-)
FORTH LVDS Receiver Signal (A+)
FORTH LVDS Receiver Signal (B-)
FORTH LVDS Receiver Signal (C-)
FORTH LVDS Receiver Signal (C+)
Ground
FORTH LVDS Receiver Clock Signal(-)
Ground
FORTH LVDS Receiver Signal (D-)
FORTH LVDS Receiver Signal (D+)
FORTH LVDS Receiver Signal (E-)
FORTH LVDS Receiver Signal (E+)
Notes : 1. All GND(ground) pins should be connected together to the LCD module’s metal frame.
2. LVDS pin (pin No. #22,23,38,39) are used for 10Bit(D) of the LCD module.
[CN1]
CN1 CN2
#1
#5
1
#1
#4
1
- Part/No. : IS050-C51B-C39-A(UJU)
- Mating connector : FI-RE51HL
(Manufactured by JAE)
[CN2]
#1
#5
1
#1
#4
1
- Part/No. : IS050-C41B-C39-A(UJU)
- Mating connector : FI-RE41HL
(Manufactured by JAE)
Rear view of LCM
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Product Specification
3-2-2. Backlight Interface
- LED Connector : H401K-D12N-12B (Manufactured by E&T)
- Mating Connector : 4530K-F12N-01R (Manufactured by E&T) or Equivalent.
Table 5. LED CONNECTOR PIN CONFIGULATION
Pin No. Symbol Description Note
1 G1- Green LED channel 1 Cathode
2 G2- Green LED channel 2 Cathode
3 G1+ Green Common Anode
4 B1+ Blue Common Anode
LM270WQ3
Liquid Crystal Display
5 B1- Blue LED channel 1 Cathode
6 B2- Blue LED channel 2 Cathode
7 B3- Blue LED channel 3 Cathode
8 B4- Blue LED channel 4 Cathode
9 B2+ Blue Common Anode
10 G2+ Green Common Anode
11 G3- Green LED channel 3 Cathode
12 G4- Green LED channel 4 Cathode
Notes : 1. Green Common Anode Pin. No. 3 & 10 must be connected electrically for
stable operation.
2. Blue Common Anode Pin. No. 4 & 9 must be connected electrically for
stable operation.
#1 #12
#1 #12
[Top view ] [Side view ]
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