LG Display LM270WF3-TLA1 Specification
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() Preliminary Specification
( ) Final Specification
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LM270WF3
Liquid Crystal Display
Product Specification
SPECIFICATION
FOR
APPROVAL
MODEL
APPROVED BY
/
/
ACERBUYER
SIGNATURE
DATE
27” Full HD TFT LCDTitle
LG Display Co., Ltd.SUPPLIER
LM270WF3*MODEL
TLA1SUFFIX
*When you obtain standard approval,
please use the above model name without suffix
APPROVED BY
K.G. PARK / G.Manager
REVIEWED BY
J.H.SONG / Manager [C]
S.Y.AN / Manager [M]
H.J.LEE / Manager [P]
DATE
PREPARED BY
/
Please return 1 copy for your confirmation with
your signature and comments.
Ver. 0.5 Aug., 18. 2010
N.H. KIM / Engineer
Product Engineering Dept.
LG Display Co., Ltd
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LM270WF3
Liquid Crystal Display
Product Specification
CONTENTS
COVER
CONTENTS
RECORD OF REVISIONS
GENERAL DESCRIPTION1
ABSOLUTE MAXIMUM RATINGS2
ELECTRICAL SPECIFICATIONS3
ELECTRICAL CHARACTREISTICS3-1
INTERFACE CONNECTIONS3-2
LVDS CHARACTERISTICS3-3
SIGNAL TIMING SPECIFICATIONS3-4
SIGNAL TIMING WAVEFORMS3-5
COLOR DATA REFERNECE3-6
POWER SEQUENCE3-7
OPTICAL SFECIFICATIONS4
ITEMNo
Page
1
2
3
4
5
6
6
9
12
16
17
18
19
20
MECHANICAL CHARACTERISTICS5
RELIABLITY6
INTERNATIONAL STANDARDS7
SAFETY7-1
EMC7-2
ENVIRONMENT7-3
PACKING8
DESIGNATION OF LOT MARK8-1
PACKING FORM8-2
PRECAUTIONS9
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LM270WF3
Liquid Crystal Display
Product Specification
RECORD OF REVISIONS
Revision
No
DescriptionPageRevision Date
-May,27,20100.1
First Draft, Preliminary Specifications
Power Consumption Update6July,08,20100.2
Color Coordinates Update20
Weight Update26
Power Consumption Update6Aug.,02,20100.3
LED bar Electrical Characteristics Update7Aug.,10,20100.4
Drawing Update27,28
BOX Size Update31
Optical Characteristics Update20Aug.,18,20100.5
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1. General Description
LM270WF3-TLA1 is a Color Active Matrix Liquid Crystal Display with Light Emitting Diode (White 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 white mode. It has a 27 inch diagonally measured active
display area with FHD resolution (1080 vertical by 1920 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 8-bit gray scale signal for each dot, thus, presenting a palette of more than
16,7M colors with Advanced-FRC(Frame Rate Control). It has been designed to apply the interface method
that enables low power, high speed, low EMI. FPD Link or compatible must be used as a LVDS(Low Voltage
Differential Signaling) chip. It is intended to support applications where thin thickness, wide viewing angle, low
power are critical factors and graphic displays are important. In combination with the vertical arrangement of
the sub-pixels, the LM270WF3-TLA1 characteristics provide an excellent flat panel display for office automation
products such as monitors.
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LM270WF3
Liquid Crystal Display
Product Specification
FIG. 1 Block diagram
LVDS
2Port
LVDS
2Port
V
LCD
(+12V)
CN2
(41pin)
CN1
(51pin)
LVDS 3,4
LVDS 1,2
General Features
Mini-LVDS(RGB)
Timing Control Block
Power Circuit Block
FB 4ch
27 inches (68.6cm) diagonalActive Screen Size
630(H) x 368.2(V) x 17.8 (D) mm (Typ.)Outline Dimension
0.3114(H) mm x 0.3114(V) mmPixel Pitch
1920 horizontal x 1080 vertical Pixels, RGB stripe arrangementPixel Format
16.7M colorsColor Depth
400 cd/m
2
(Center, 1 point)Luminance, White
R/L 170(Typ.), U/D 160(Typ.)Viewing Angle(CR>10)
Total 29.28 W (Typ.) ( 5.34 W
3062 g (Typ.)Weight
Transmissive mode, Normally WhiteDisplay Operating Mode
Hard coating (3H) & Anti-Glare treatment of the front polarizerSurface Treatment
Source Driver Circuit
S1
Dual Gate Driver Circuit
G1
TFT - LCD Panel
(1920 Ý RGB Ý 1080 pixels)
G1080
Backlight assembly (Single LED Bar)
@ VLCD, 23.94 W @ 400 cd/m
S1920
2
)Power Consumption
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2. Absolute Maximum Ratings
The following are maximum values which, if exceeded, may cause faulty operation or permanent
damage to the unit.
Table 1. Absolute Maximum Ratings
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LM270WF3
Liquid Crystal Display
Product Specification
Values
Parameter Notes
Symbol
Units
MaxMin
Power Supply Input Voltage
Operating Temperature
Storage Temperature
Operating Ambient Humidity
Storage Humidity
LCD
OP
ST
OP
ST
Vdc12.4-0.3V
¶C500T
¶C60-20T
%RH9010H
%RH9010H
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.
90%
60
60%
Wet Bulb
Temperature [C]
30
20
10
0
50
40
40%
Humidity [(%)RH]
10%
at 25 r 2¶C
1
Storage
Operation
10 20 30 40 50 60 70 800-20
Dry Bulb Temperature [C]
Figure 2. Temperature and Relative Humidity
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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 an LED Driverr.
The LED Driver is an external unit to the LCDs.
Table 2. Electrical Characteristics (Module)
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LM270WF3
Liquid Crystal Display
Product Specification
Parameter Symbol
NotesUnit
MaxTypMin
MODULE :
Values
Power Supply Input Voltage
Permissive Power Input Ripple
Differential Impedance
Power Supply Input Current
Power Consumption
Rush current
LCD
dRF
m
I
LCD-MOSAIC_60Hz
I
LCD-Black_60Hz
LCD-MOSAIC_120Hz
LCD-Black_120Hz
LCD
RUSH
Vdc12.412.011.6V
Ohm11010090Z
mA750630-I
mA990830-I
Note :
1. Permissive power ripple should be measured under V
=12.0V, 25·2¶C, fV(frame frequency)= 120Hz
LCD
condition and at that time, we recommend the bandwidth configuration of oscilloscope is to be under 20MHz.
2. The specified current and power consumption are under the V
=12.0V, 25 r 2¶C, fV= 60Hz condition
LCD
whereas Mosaic pattern shown in the [ Figure 3. ] is displayed.
3. The specified current is measured at the Full black pattern.
4. The duration of rush current is about 5ms and measured under condition that the rising time of power
input is 500us r 20%.
1mVp-p400V
2mA530445-
3mA650545-
2W10.85.34-P
4A3.0--I
Figure 3. Pattern for Electrical Characteristics
Mosaic Pattern(8 x 6)
Full Black Pattern
White : 255Gray Black : 0Gray
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Table 3. LED bar Electrical characteristics
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LM270WF3
Liquid Crystal Display
Product Specification
ConditionSymbolParameter
Values
Power Consumption
LED driver design guide
: 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.
Max.Typ.Min.
Unit
Notes
1LED :
2mA120110-IsLED String Current
3V57.854.451.0VsLED String Voltage
4,6Watt25.4323.9422.44PBar
5Hrs--30,000LED_LTLED Life Time
1. Specified values are for a single LED bar.
2. The specified current is input LED chip 100% duty current.
3. The specified voltage is input LED string and Bar voltage at typical 110 mA 100% duty current.
4. The specified power consumption is input LED bar power consumption at typical 110 mA 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 LED bar power consumption shown above does not include loss of external driver.
The used LED bar current is the LED typical current.
Min Power Consumption is calculated with PBar = Vs(Min.) x Is(Typ.) x Nstring
Max Power Consumption is calculated with PBar = Vbar(Max.) x Is(Typ) x Nstring
7. LED operating DC Forward Current must not exceed LED Max Ratings at 25 r 2¶C.
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3-2. Interface Connections
This LCD module employs two kinds of interface connection, 51 pin connector and 41 pin connector are
used for the module electronics.
3-2-1. LCD Module
Table 4. Module Connector (CN1) Pin Configuration
- LCD Connector(CN1): IS050-C51B-C39-A(manufactured by UJU)
- Mating Connector : FI-R51HL(JAE) or compatible
No Symbol Description No Symbol Description
1 GND Ground 27 NC No Connection (BIT)
2 MST MST Option Enable 28 R2AN 2nd LVDS Channel Signal (A-)
3 PWM_OUT PWM Signal Output 29 R2AP 2nd LVDS Channel Signal (A+)
4 NC No Connection (SDA) 30 R2BN 2nd LVDS Channel Signal (B-)
5 NC No Connection (SCL) 31 R2BP 2nd LVDS Channel Signal (B+)
6 NC No Connection 32 R2CN 2nd LVDS Channel Signal (C-)
7 NC No Connection (DISM) 33 R2CP 2nd LVDS Channel Signal (C+)
8 NC No Connection 34 GND Ground
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LM270WF3
Liquid Crystal Display
Product Specification
9 ODC_EN ODC Enable 35 R2CLKN 2nd LVDS Channel Clock Signal(-)
FPS_DET H: High Frame rate, L: Legacy 36 R2CLKP 2nd LVDS Channel Clock Signal(+)
10
11 GND Ground 37 GND Ground
12 R1AN 1st LVDS Channel Signal (A-) 38 R2DN 2nd LVDS Channel Signal (D-)
13 R1AP 1st LVDS Channel Signal (A+) 39 R2DP 2nd LVDS Channel Signal (D+)
14 R1BN 1st LVDS Channel Signal (B-) 40 GND Ground
15 R1BP 1st LVDS Channel Signal (B+) 41 NC No connection
16 R1CN 1st LVDS Channel Signal (C-) 42 NC No connection
17 R1CP 1st LVDS Channel Signal (C+) 43 GND Ground
18 GND Ground 44 GND Ground (AGP)
19 R1CLKN 1st LVDS Channel Clock Signal(-) 45 GND Ground
20 R1CLKP 1st LVDS Channel Clock Signal(+) 46 NC No connection
21 GND Ground 47 NC No connection
22 R1DN 1st LVDS Channel Signal (D-) 48 VLCD Power Supply +12.0V
23 R1DP 1st LVDS Channel Signal (D+) 49 VLCD Power Supply +12.0V
24 GND Ground 50 VLCD Power Supply +12.0V
25 NC No Connection 51 VLCD Power Supply +12.0V
26 NC No Connection
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Table 5. Module Connector (CN2) Pin Configuration
- LCD Connector(CN2): IS050-C41B-C39-A(manufactured by UJU)
- Mating Connector : FI-RE41HL(JAE) or compatible
No Symbol Description No Symbol Description
1 NC No connection 22 GND Ground
2 NC No connection 23 NC No connection
3 NC No connection 24 NC No connection
4 NC No connection 25 GND Ground
5 NC No connection 26 RA4N 4th LVDS Channel Signal (A-)
6 NC No connection 27 RA4P 4th LVDS Channel Signal (A+)
7 NC No connection 28 RB4N 4th LVDS Channel Signal (B-)
8 NC No connection 29 RB4P 4th LVDS Channel Signal (B+)
9 GND Ground 30 RC4N 4th LVDS Channel Signal (C-)
10 RA3N 3rd LVDS Channel Signal (A-) 31 RC4P 4th LVDS Channel Signal (C+)
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LM270WF3
Liquid Crystal Display
Product Specification
11 RA3P 3rd LVDS Channel Signal (A+) 32 GND Ground
12 RB3N 3rd LVDS Channel Signal (B-) 33 RCLK4N 4th LVDS Channel Clock Signal(-)
13 RB3P 3rd LVDS Channel Signal (B+) 34 RCLK4P 4th LVDS Channel Clock Signal(+)
14 RC3N 3rd LVDS Channel Signal (C-) 35 GND Ground
15 RC3P 3rd LVDS Channel Signal (C+) 36 RD4N 4th LVDS Channel Signal (D-)
16 GND Ground 37 RD4P 4th LVDS Channel Signal (D+)
17 RCLK3N 3rd LVDS Channel Clock Signal(-) 38 GND Ground
18 RCLK3P 3rd LVDS Channel Clock Signal(+) 39 NC No connection
19 GND Ground 40 GND Ground
20 RD3N 3rd LVDS Channel Signal (D-) 41 GND Ground
21 RD3P 3rd LVDS Channel Signal (D+)
Figure 4. Module Connector Diagram
#1
CN1 CN2
#51 #1 #41
#1 #51
#1 #41
[Rear view of LCM]
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Note :
1. All GND (Ground) pins should be connected together to the LCD module’s metal frame.
2. All V
3. All Input levels of LVDS signals are based on the EIA 664 Standard.
4. Always all LVDS signal and clock input should be 4 channels and synchronized.
5. Specific pins (CN1 pin No. 4~8, 27, 44) are used for internal process of the LCD module manufacturing.
Leave these pins in condition that ‘No Connection’.
6. MST : MST option enable (Input), ‘L’ : Disable, ‘H’ : Enable
7. PWM_OUT : Reference signal (Output) for synchronizing Vsync and Burst frequency of inverter to avoid
8. ODC_EN : ODC enable (Input), ‘L’ : Disable, ‘H’ : Enable
9. FPS_DET : Frame rate detection (Input), ‘L’ : Under 50MHz, ‘H’: Over 50MHz.
(power input) pins should be connected together.
LCD
MST option : Left side image is applied to CN1, 1
Right side image is applied to CN2, 3
It should be tided up ‘L’ or ‘H’.
wavy noise, flickering, etc.
It should be tided up ‘L’ or ‘H’.
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Product Specification
st
& 2ndLVDS channel.
rd
& 4thLVDS channel.
LM270WF3
Liquid Crystal Display
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